*
* CDDL HEADER END
*/
+
+/*
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Portions Copyright 2011 Martin Matuska
+ * Portions Copyright 2012 Pawel Jakub Dawidek <pawel@dawidek.net>
+ * Copyright (c) 2012, Joyent, Inc. All rights reserved.
+ * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
+ * Copyright (c) 2012, Joyent, Inc. All rights reserved.
+ * Copyright (c) 201i3 by Delphix. All rights reserved.
+ * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
+ * Copyright (c) 2013 Steven Hartland. All rights reserved.
+ */
+
/*
- * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
- * Use is subject to license terms.
+ * ZFS ioctls.
+ *
+ * This file handles the ioctls to /dev/zfs, used for configuring ZFS storage
+ * pools and filesystems, e.g. with /sbin/zfs and /sbin/zpool.
+ *
+ * There are two ways that we handle ioctls: the legacy way where almost
+ * all of the logic is in the ioctl callback, and the new way where most
+ * of the marshalling is handled in the common entry point, zfsdev_ioctl().
+ *
+ * Non-legacy ioctls should be registered by calling
+ * zfs_ioctl_register() from zfs_ioctl_init(). The ioctl is invoked
+ * from userland by lzc_ioctl().
+ *
+ * The registration arguments are as follows:
+ *
+ * const char *name
+ * The name of the ioctl. This is used for history logging. If the
+ * ioctl returns successfully (the callback returns 0), and allow_log
+ * is true, then a history log entry will be recorded with the input &
+ * output nvlists. The log entry can be printed with "zpool history -i".
+ *
+ * zfs_ioc_t ioc
+ * The ioctl request number, which userland will pass to ioctl(2).
+ * The ioctl numbers can change from release to release, because
+ * the caller (libzfs) must be matched to the kernel.
+ *
+ * zfs_secpolicy_func_t *secpolicy
+ * This function will be called before the zfs_ioc_func_t, to
+ * determine if this operation is permitted. It should return EPERM
+ * on failure, and 0 on success. Checks include determining if the
+ * dataset is visible in this zone, and if the user has either all
+ * zfs privileges in the zone (SYS_MOUNT), or has been granted permission
+ * to do this operation on this dataset with "zfs allow".
+ *
+ * zfs_ioc_namecheck_t namecheck
+ * This specifies what to expect in the zfs_cmd_t:zc_name -- a pool
+ * name, a dataset name, or nothing. If the name is not well-formed,
+ * the ioctl will fail and the callback will not be called.
+ * Therefore, the callback can assume that the name is well-formed
+ * (e.g. is null-terminated, doesn't have more than one '@' character,
+ * doesn't have invalid characters).
+ *
+ * zfs_ioc_poolcheck_t pool_check
+ * This specifies requirements on the pool state. If the pool does
+ * not meet them (is suspended or is readonly), the ioctl will fail
+ * and the callback will not be called. If any checks are specified
+ * (i.e. it is not POOL_CHECK_NONE), namecheck must not be NO_NAME.
+ * Multiple checks can be or-ed together (e.g. POOL_CHECK_SUSPENDED |
+ * POOL_CHECK_READONLY).
+ *
+ * boolean_t smush_outnvlist
+ * If smush_outnvlist is true, then the output is presumed to be a
+ * list of errors, and it will be "smushed" down to fit into the
+ * caller's buffer, by removing some entries and replacing them with a
+ * single "N_MORE_ERRORS" entry indicating how many were removed. See
+ * nvlist_smush() for details. If smush_outnvlist is false, and the
+ * outnvlist does not fit into the userland-provided buffer, then the
+ * ioctl will fail with ENOMEM.
+ *
+ * zfs_ioc_func_t *func
+ * The callback function that will perform the operation.
+ *
+ * The callback should return 0 on success, or an error number on
+ * failure. If the function fails, the userland ioctl will return -1,
+ * and errno will be set to the callback's return value. The callback
+ * will be called with the following arguments:
+ *
+ * const char *name
+ * The name of the pool or dataset to operate on, from
+ * zfs_cmd_t:zc_name. The 'namecheck' argument specifies the
+ * expected type (pool, dataset, or none).
+ *
+ * nvlist_t *innvl
+ * The input nvlist, deserialized from zfs_cmd_t:zc_nvlist_src. Or
+ * NULL if no input nvlist was provided. Changes to this nvlist are
+ * ignored. If the input nvlist could not be deserialized, the
+ * ioctl will fail and the callback will not be called.
+ *
+ * nvlist_t *outnvl
+ * The output nvlist, initially empty. The callback can fill it in,
+ * and it will be returned to userland by serializing it into
+ * zfs_cmd_t:zc_nvlist_dst. If it is non-empty, and serialization
+ * fails (e.g. because the caller didn't supply a large enough
+ * buffer), then the overall ioctl will fail. See the
+ * 'smush_nvlist' argument above for additional behaviors.
+ *
+ * There are two typical uses of the output nvlist:
+ * - To return state, e.g. property values. In this case,
+ * smush_outnvlist should be false. If the buffer was not large
+ * enough, the caller will reallocate a larger buffer and try
+ * the ioctl again.
+ *
+ * - To return multiple errors from an ioctl which makes on-disk
+ * changes. In this case, smush_outnvlist should be true.
+ * Ioctls which make on-disk modifications should generally not
+ * use the outnvl if they succeed, because the caller can not
+ * distinguish between the operation failing, and
+ * deserialization failing.
*/
#include <sys/types.h>
#include <sys/cmn_err.h>
#include <sys/stat.h>
#include <sys/zfs_ioctl.h>
+#include <sys/zfs_vfsops.h>
#include <sys/zfs_znode.h>
#include <sys/zap.h>
#include <sys/spa.h>
#include <sys/spa_impl.h>
#include <sys/vdev.h>
-#include <sys/vdev_impl.h>
+#include <sys/priv_impl.h>
#include <sys/dmu.h>
#include <sys/dsl_dir.h>
#include <sys/dsl_dataset.h>
#include <sys/dsl_prop.h>
#include <sys/dsl_deleg.h>
#include <sys/dmu_objset.h>
+#include <sys/dmu_impl.h>
+#include <sys/dmu_tx.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include <sys/sunldi.h>
#include <sys/fs/zfs.h>
#include <sys/zfs_ctldir.h>
#include <sys/zfs_dir.h>
+#include <sys/zfs_onexit.h>
#include <sys/zvol.h>
+#include <sys/dsl_scan.h>
#include <sharefs/share.h>
-#include <sys/dmu_objset.h>
+#include <sys/fm/util.h>
+
+#include <sys/dmu_send.h>
+#include <sys/dsl_destroy.h>
+#include <sys/dsl_userhold.h>
+#include <sys/zfeature.h>
+
+#include <linux/miscdevice.h>
#include "zfs_namecheck.h"
#include "zfs_prop.h"
#include "zfs_deleg.h"
+#include "zfs_comutil.h"
-extern struct modlfs zfs_modlfs;
+kmutex_t zfsdev_state_lock;
+list_t zfsdev_state_list;
extern void zfs_init(void);
extern void zfs_fini(void);
-ldi_ident_t zfs_li = NULL;
-dev_info_t *zfs_dip;
+uint_t zfs_fsyncer_key;
+extern uint_t rrw_tsd_key;
+static uint_t zfs_allow_log_key;
+
+typedef int zfs_ioc_legacy_func_t(zfs_cmd_t *);
+typedef int zfs_ioc_func_t(const char *, nvlist_t *, nvlist_t *);
+typedef int zfs_secpolicy_func_t(zfs_cmd_t *, nvlist_t *, cred_t *);
+
+typedef enum {
+ NO_NAME,
+ POOL_NAME,
+ DATASET_NAME
+} zfs_ioc_namecheck_t;
-typedef int zfs_ioc_func_t(zfs_cmd_t *);
-typedef int zfs_secpolicy_func_t(zfs_cmd_t *, cred_t *);
+typedef enum {
+ POOL_CHECK_NONE = 1 << 0,
+ POOL_CHECK_SUSPENDED = 1 << 1,
+ POOL_CHECK_READONLY = 1 << 2,
+} zfs_ioc_poolcheck_t;
typedef struct zfs_ioc_vec {
+ zfs_ioc_legacy_func_t *zvec_legacy_func;
zfs_ioc_func_t *zvec_func;
zfs_secpolicy_func_t *zvec_secpolicy;
- enum {
- NO_NAME,
- POOL_NAME,
- DATASET_NAME
- } zvec_namecheck;
- boolean_t zvec_his_log;
+ zfs_ioc_namecheck_t zvec_namecheck;
+ boolean_t zvec_allow_log;
+ zfs_ioc_poolcheck_t zvec_pool_check;
+ boolean_t zvec_smush_outnvlist;
+ const char *zvec_name;
} zfs_ioc_vec_t;
-static void clear_props(char *dataset, nvlist_t *props, nvlist_t *newprops);
+/* This array is indexed by zfs_userquota_prop_t */
+static const char *userquota_perms[] = {
+ ZFS_DELEG_PERM_USERUSED,
+ ZFS_DELEG_PERM_USERQUOTA,
+ ZFS_DELEG_PERM_GROUPUSED,
+ ZFS_DELEG_PERM_GROUPQUOTA,
+};
+
+static int zfs_ioc_userspace_upgrade(zfs_cmd_t *zc);
+static int zfs_check_settable(const char *name, nvpair_t *property,
+ cred_t *cr);
+static int zfs_check_clearable(char *dataset, nvlist_t *props,
+ nvlist_t **errors);
static int zfs_fill_zplprops_root(uint64_t, nvlist_t *, nvlist_t *,
boolean_t *);
-int zfs_set_prop_nvlist(const char *, nvlist_t *);
-
-/* _NOTE(PRINTFLIKE(4)) - this is printf-like, but lint is too whiney */
-void
-__dprintf(const char *file, const char *func, int line, const char *fmt, ...)
-{
- const char *newfile;
- char buf[256];
- va_list adx;
-
- /*
- * Get rid of annoying "../common/" prefix to filename.
- */
- newfile = strrchr(file, '/');
- if (newfile != NULL) {
- newfile = newfile + 1; /* Get rid of leading / */
- } else {
- newfile = file;
- }
+int zfs_set_prop_nvlist(const char *, zprop_source_t, nvlist_t *, nvlist_t *);
+static int get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp);
- va_start(adx, fmt);
- (void) vsnprintf(buf, sizeof (buf), fmt, adx);
- va_end(adx);
-
- /*
- * To get this data, use the zfs-dprintf probe as so:
- * dtrace -q -n 'zfs-dprintf \
- * /stringof(arg0) == "dbuf.c"/ \
- * {printf("%s: %s", stringof(arg1), stringof(arg3))}'
- * arg0 = file name
- * arg1 = function name
- * arg2 = line number
- * arg3 = message
- */
- DTRACE_PROBE4(zfs__dprintf,
- char *, newfile, char *, func, int, line, char *, buf);
-}
+static int zfs_prop_activate_feature(spa_t *spa, zfeature_info_t *feature);
static void
history_str_free(char *buf)
{
char *buf;
- if (zc->zc_history == NULL)
+ if (zc->zc_history == 0)
return (NULL);
- buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP);
+ buf = kmem_alloc(HIS_MAX_RECORD_LEN, KM_SLEEP | KM_NODEBUG);
if (copyinstr((void *)(uintptr_t)zc->zc_history,
buf, HIS_MAX_RECORD_LEN, NULL) != 0) {
history_str_free(buf);
static boolean_t
zfs_is_bootfs(const char *name)
{
- spa_t *spa;
- boolean_t ret = B_FALSE;
-
- if (spa_open(name, &spa, FTAG) == 0) {
- if (spa->spa_bootfs) {
- objset_t *os;
+ objset_t *os;
- if (dmu_objset_open(name, DMU_OST_ZFS,
- DS_MODE_USER | DS_MODE_READONLY, &os) == 0) {
- ret = (dmu_objset_id(os) == spa->spa_bootfs);
- dmu_objset_close(os);
- }
- }
- spa_close(spa, FTAG);
+ if (dmu_objset_hold(name, FTAG, &os) == 0) {
+ boolean_t ret;
+ ret = (dmu_objset_id(os) == spa_bootfs(dmu_objset_spa(os)));
+ dmu_objset_rele(os, FTAG);
+ return (ret);
}
- return (ret);
+ return (B_FALSE);
}
/*
- * zfs_earlier_version
- *
- * Return non-zero if the spa version is less than requested version.
+ * Return non-zero if the spa version is less than requested version.
*/
static int
zfs_earlier_version(const char *name, int version)
}
/*
- * zpl_earlier_version
- *
* Return TRUE if the ZPL version is less than requested version.
*/
static boolean_t
objset_t *os;
boolean_t rc = B_TRUE;
- if (dmu_objset_open(name, DMU_OST_ANY,
- DS_MODE_USER | DS_MODE_READONLY, &os) == 0) {
+ if (dmu_objset_hold(name, FTAG, &os) == 0) {
uint64_t zplversion;
+ if (dmu_objset_type(os) != DMU_OST_ZFS) {
+ dmu_objset_rele(os, FTAG);
+ return (B_TRUE);
+ }
+ /* XXX reading from non-owned objset */
if (zfs_get_zplprop(os, ZFS_PROP_VERSION, &zplversion) == 0)
rc = zplversion < version;
- dmu_objset_close(os);
+ dmu_objset_rele(os, FTAG);
}
return (rc);
}
if (spa_open(zc->zc_name, &spa, FTAG) == 0) {
if (spa_version(spa) >= SPA_VERSION_ZPOOL_HISTORY)
- (void) spa_history_log(spa, buf, LOG_CMD_NORMAL);
+ (void) spa_history_log(spa, buf);
spa_close(spa, FTAG);
}
history_str_free(buf);
*/
/* ARGSUSED */
static int
-zfs_secpolicy_none(zfs_cmd_t *zc, cred_t *cr)
+zfs_secpolicy_none(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
{
return (0);
}
*/
/* ARGSUSED */
static int
-zfs_secpolicy_read(zfs_cmd_t *zc, cred_t *cr)
+zfs_secpolicy_read(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
{
if (INGLOBALZONE(curproc) ||
zone_dataset_visible(zc->zc_name, NULL))
return (0);
- return (ENOENT);
+ return (SET_ERROR(ENOENT));
}
static int
-zfs_dozonecheck(const char *dataset, cred_t *cr)
+zfs_dozonecheck_impl(const char *dataset, uint64_t zoned, cred_t *cr)
{
- uint64_t zoned;
int writable = 1;
/*
*/
if (!INGLOBALZONE(curproc) &&
!zone_dataset_visible(dataset, &writable))
- return (ENOENT);
-
- if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL))
- return (ENOENT);
+ return (SET_ERROR(ENOENT));
if (INGLOBALZONE(curproc)) {
/*
* global zone.
*/
if (secpolicy_zfs(cr) && zoned)
- return (EPERM);
+ return (SET_ERROR(EPERM));
} else {
/*
* If we are in a local zone, the 'zoned' property must be set.
*/
if (!zoned)
- return (EPERM);
+ return (SET_ERROR(EPERM));
/* must be writable by this zone */
if (!writable)
- return (EPERM);
+ return (SET_ERROR(EPERM));
}
return (0);
}
-int
-zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr)
+static int
+zfs_dozonecheck(const char *dataset, cred_t *cr)
+{
+ uint64_t zoned;
+
+ if (dsl_prop_get_integer(dataset, "zoned", &zoned, NULL))
+ return (SET_ERROR(ENOENT));
+
+ return (zfs_dozonecheck_impl(dataset, zoned, cr));
+}
+
+static int
+zfs_dozonecheck_ds(const char *dataset, dsl_dataset_t *ds, cred_t *cr)
+{
+ uint64_t zoned;
+
+ if (dsl_prop_get_int_ds(ds, "zoned", &zoned))
+ return (SET_ERROR(ENOENT));
+
+ return (zfs_dozonecheck_impl(dataset, zoned, cr));
+}
+
+static int
+zfs_secpolicy_write_perms_ds(const char *name, dsl_dataset_t *ds,
+ const char *perm, cred_t *cr)
{
int error;
- error = zfs_dozonecheck(name, cr);
+ error = zfs_dozonecheck_ds(name, ds, cr);
if (error == 0) {
error = secpolicy_zfs(cr);
- if (error)
- error = dsl_deleg_access(name, perm, cr);
+ if (error != 0)
+ error = dsl_deleg_access_impl(ds, perm, cr);
+ }
+ return (error);
+}
+
+static int
+zfs_secpolicy_write_perms(const char *name, const char *perm, cred_t *cr)
+{
+ int error;
+ dsl_dataset_t *ds;
+ dsl_pool_t *dp;
+
+ error = dsl_pool_hold(name, FTAG, &dp);
+ if (error != 0)
+ return (error);
+
+ error = dsl_dataset_hold(dp, name, FTAG, &ds);
+ if (error != 0) {
+ dsl_pool_rele(dp, FTAG);
+ return (error);
}
+
+ error = zfs_secpolicy_write_perms_ds(name, ds, perm, cr);
+
+ dsl_dataset_rele(ds, FTAG);
+ dsl_pool_rele(dp, FTAG);
return (error);
}
+/*
+ * Policy for setting the security label property.
+ *
+ * Returns 0 for success, non-zero for access and other errors.
+ */
+static int
+zfs_set_slabel_policy(const char *name, char *strval, cred_t *cr)
+{
+#ifdef HAVE_MLSLABEL
+ char ds_hexsl[MAXNAMELEN];
+ bslabel_t ds_sl, new_sl;
+ boolean_t new_default = FALSE;
+ uint64_t zoned;
+ int needed_priv = -1;
+ int error;
+
+ /* First get the existing dataset label. */
+ error = dsl_prop_get(name, zfs_prop_to_name(ZFS_PROP_MLSLABEL),
+ 1, sizeof (ds_hexsl), &ds_hexsl, NULL);
+ if (error != 0)
+ return (SET_ERROR(EPERM));
+
+ if (strcasecmp(strval, ZFS_MLSLABEL_DEFAULT) == 0)
+ new_default = TRUE;
+
+ /* The label must be translatable */
+ if (!new_default && (hexstr_to_label(strval, &new_sl) != 0))
+ return (SET_ERROR(EINVAL));
+
+ /*
+ * In a non-global zone, disallow attempts to set a label that
+ * doesn't match that of the zone; otherwise no other checks
+ * are needed.
+ */
+ if (!INGLOBALZONE(curproc)) {
+ if (new_default || !blequal(&new_sl, CR_SL(CRED())))
+ return (SET_ERROR(EPERM));
+ return (0);
+ }
+
+ /*
+ * For global-zone datasets (i.e., those whose zoned property is
+ * "off", verify that the specified new label is valid for the
+ * global zone.
+ */
+ if (dsl_prop_get_integer(name,
+ zfs_prop_to_name(ZFS_PROP_ZONED), &zoned, NULL))
+ return (SET_ERROR(EPERM));
+ if (!zoned) {
+ if (zfs_check_global_label(name, strval) != 0)
+ return (SET_ERROR(EPERM));
+ }
+
+ /*
+ * If the existing dataset label is nondefault, check if the
+ * dataset is mounted (label cannot be changed while mounted).
+ * Get the zfs_sb_t; if there isn't one, then the dataset isn't
+ * mounted (or isn't a dataset, doesn't exist, ...).
+ */
+ if (strcasecmp(ds_hexsl, ZFS_MLSLABEL_DEFAULT) != 0) {
+ objset_t *os;
+ static char *setsl_tag = "setsl_tag";
+
+ /*
+ * Try to own the dataset; abort if there is any error,
+ * (e.g., already mounted, in use, or other error).
+ */
+ error = dmu_objset_own(name, DMU_OST_ZFS, B_TRUE,
+ setsl_tag, &os);
+ if (error != 0)
+ return (SET_ERROR(EPERM));
+
+ dmu_objset_disown(os, setsl_tag);
+
+ if (new_default) {
+ needed_priv = PRIV_FILE_DOWNGRADE_SL;
+ goto out_check;
+ }
+
+ if (hexstr_to_label(strval, &new_sl) != 0)
+ return (SET_ERROR(EPERM));
+
+ if (blstrictdom(&ds_sl, &new_sl))
+ needed_priv = PRIV_FILE_DOWNGRADE_SL;
+ else if (blstrictdom(&new_sl, &ds_sl))
+ needed_priv = PRIV_FILE_UPGRADE_SL;
+ } else {
+ /* dataset currently has a default label */
+ if (!new_default)
+ needed_priv = PRIV_FILE_UPGRADE_SL;
+ }
+
+out_check:
+ if (needed_priv != -1)
+ return (PRIV_POLICY(cr, needed_priv, B_FALSE, EPERM, NULL));
+ return (0);
+#else
+ return (ENOTSUP);
+#endif /* HAVE_MLSLABEL */
+}
+
static int
-zfs_secpolicy_setprop(const char *name, zfs_prop_t prop, cred_t *cr)
+zfs_secpolicy_setprop(const char *dsname, zfs_prop_t prop, nvpair_t *propval,
+ cred_t *cr)
{
+ char *strval;
+
/*
* Check permissions for special properties.
*/
switch (prop) {
+ default:
+ break;
case ZFS_PROP_ZONED:
/*
* Disallow setting of 'zoned' from within a local zone.
*/
if (!INGLOBALZONE(curproc))
- return (EPERM);
+ return (SET_ERROR(EPERM));
break;
case ZFS_PROP_QUOTA:
* quota on things *under* (ie. contained by)
* the thing they own.
*/
- if (dsl_prop_get_integer(name, "zoned", &zoned,
+ if (dsl_prop_get_integer(dsname, "zoned", &zoned,
setpoint))
- return (EPERM);
- if (!zoned || strlen(name) <= strlen(setpoint))
- return (EPERM);
+ return (SET_ERROR(EPERM));
+ if (!zoned || strlen(dsname) <= strlen(setpoint))
+ return (SET_ERROR(EPERM));
+ }
+ break;
+
+ case ZFS_PROP_MLSLABEL:
+ if (!is_system_labeled())
+ return (SET_ERROR(EPERM));
+
+ if (nvpair_value_string(propval, &strval) == 0) {
+ int err;
+
+ err = zfs_set_slabel_policy(dsname, strval, CRED());
+ if (err != 0)
+ return (err);
}
break;
}
- return (zfs_secpolicy_write_perms(name, zfs_prop_to_name(prop), cr));
+ return (zfs_secpolicy_write_perms(dsname, zfs_prop_to_name(prop), cr));
}
-int
-zfs_secpolicy_fsacl(zfs_cmd_t *zc, cred_t *cr)
+/* ARGSUSED */
+static int
+zfs_secpolicy_set_fsacl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
{
int error;
error = zfs_dozonecheck(zc->zc_name, cr);
- if (error)
+ if (error != 0)
return (error);
/*
return (0);
}
-int
-zfs_secpolicy_rollback(zfs_cmd_t *zc, cred_t *cr)
+/* ARGSUSED */
+static int
+zfs_secpolicy_rollback(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
+{
+ return (zfs_secpolicy_write_perms(zc->zc_name,
+ ZFS_DELEG_PERM_ROLLBACK, cr));
+}
+
+/* ARGSUSED */
+static int
+zfs_secpolicy_send(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
{
+ dsl_pool_t *dp;
+ dsl_dataset_t *ds;
+ char *cp;
int error;
- error = zfs_secpolicy_write_perms(zc->zc_name,
- ZFS_DELEG_PERM_ROLLBACK, cr);
- if (error == 0)
- error = zfs_secpolicy_write_perms(zc->zc_name,
- ZFS_DELEG_PERM_MOUNT, cr);
+
+ /*
+ * Generate the current snapshot name from the given objsetid, then
+ * use that name for the secpolicy/zone checks.
+ */
+ cp = strchr(zc->zc_name, '@');
+ if (cp == NULL)
+ return (SET_ERROR(EINVAL));
+ error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
+ if (error != 0)
+ return (error);
+
+ error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &ds);
+ if (error != 0) {
+ dsl_pool_rele(dp, FTAG);
+ return (error);
+ }
+
+ dsl_dataset_name(ds, zc->zc_name);
+
+ error = zfs_secpolicy_write_perms_ds(zc->zc_name, ds,
+ ZFS_DELEG_PERM_SEND, cr);
+ dsl_dataset_rele(ds, FTAG);
+ dsl_pool_rele(dp, FTAG);
+
return (error);
}
-int
-zfs_secpolicy_send(zfs_cmd_t *zc, cred_t *cr)
+/* ARGSUSED */
+static int
+zfs_secpolicy_send_new(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
{
return (zfs_secpolicy_write_perms(zc->zc_name,
ZFS_DELEG_PERM_SEND, cr));
}
+#ifdef HAVE_SMB_SHARE
+/* ARGSUSED */
+static int
+zfs_secpolicy_deleg_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
+{
+ vnode_t *vp;
+ int error;
+
+ if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
+ NO_FOLLOW, NULL, &vp)) != 0)
+ return (error);
+
+ /* Now make sure mntpnt and dataset are ZFS */
+
+ if (vp->v_vfsp->vfs_fstype != zfsfstype ||
+ (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
+ zc->zc_name) != 0)) {
+ VN_RELE(vp);
+ return (SET_ERROR(EPERM));
+ }
+
+ VN_RELE(vp);
+ return (dsl_deleg_access(zc->zc_name,
+ ZFS_DELEG_PERM_SHARE, cr));
+}
+#endif /* HAVE_SMB_SHARE */
+
int
-zfs_secpolicy_share(zfs_cmd_t *zc, cred_t *cr)
+zfs_secpolicy_share(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
{
+#ifdef HAVE_SMB_SHARE
if (!INGLOBALZONE(curproc))
- return (EPERM);
+ return (SET_ERROR(EPERM));
if (secpolicy_nfs(cr) == 0) {
return (0);
} else {
- vnode_t *vp;
- int error;
-
- if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
- NO_FOLLOW, NULL, &vp)) != 0)
- return (error);
-
- /* Now make sure mntpnt and dataset are ZFS */
+ return (zfs_secpolicy_deleg_share(zc, innvl, cr));
+ }
+#else
+ return (SET_ERROR(ENOTSUP));
+#endif /* HAVE_SMB_SHARE */
+}
- if (vp->v_vfsp->vfs_fstype != zfsfstype ||
- (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
- zc->zc_name) != 0)) {
- VN_RELE(vp);
- return (EPERM);
- }
+int
+zfs_secpolicy_smb_acl(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
+{
+#ifdef HAVE_SMB_SHARE
+ if (!INGLOBALZONE(curproc))
+ return (SET_ERROR(EPERM));
- VN_RELE(vp);
- return (dsl_deleg_access(zc->zc_name,
- ZFS_DELEG_PERM_SHARE, cr));
+ if (secpolicy_smb(cr) == 0) {
+ return (0);
+ } else {
+ return (zfs_secpolicy_deleg_share(zc, innvl, cr));
}
+#else
+ return (SET_ERROR(ENOTSUP));
+#endif /* HAVE_SMB_SHARE */
}
static int
} else {
cp = strrchr(parent, '/');
if (cp == NULL)
- return (ENOENT);
+ return (SET_ERROR(ENOENT));
cp[0] = '\0';
}
return (zfs_secpolicy_write_perms(name, ZFS_DELEG_PERM_DESTROY, cr));
}
+/* ARGSUSED */
static int
-zfs_secpolicy_destroy(zfs_cmd_t *zc, cred_t *cr)
+zfs_secpolicy_destroy(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
{
return (zfs_secpolicy_destroy_perms(zc->zc_name, cr));
}
/*
- * Must have sys_config privilege to check the iscsi permission
+ * Destroying snapshots with delegated permissions requires
+ * descendant mount and destroy permissions.
*/
/* ARGSUSED */
static int
-zfs_secpolicy_iscsi(zfs_cmd_t *zc, cred_t *cr)
+zfs_secpolicy_destroy_snaps(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
{
- return (secpolicy_zfs(cr));
+ nvlist_t *snaps;
+ nvpair_t *pair, *nextpair;
+ int error = 0;
+
+ if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
+ return (SET_ERROR(EINVAL));
+ for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
+ pair = nextpair) {
+ dsl_pool_t *dp;
+ dsl_dataset_t *ds;
+
+ error = dsl_pool_hold(nvpair_name(pair), FTAG, &dp);
+ if (error != 0)
+ break;
+ nextpair = nvlist_next_nvpair(snaps, pair);
+ error = dsl_dataset_hold(dp, nvpair_name(pair), FTAG, &ds);
+ if (error == 0)
+ dsl_dataset_rele(ds, FTAG);
+ dsl_pool_rele(dp, FTAG);
+
+ if (error == 0) {
+ error = zfs_secpolicy_destroy_perms(nvpair_name(pair),
+ cr);
+ } else if (error == ENOENT) {
+ /*
+ * Ignore any snapshots that don't exist (we consider
+ * them "already destroyed"). Remove the name from the
+ * nvl here in case the snapshot is created between
+ * now and when we try to destroy it (in which case
+ * we don't want to destroy it since we haven't
+ * checked for permission).
+ */
+ fnvlist_remove_nvpair(snaps, pair);
+ error = 0;
+ }
+ if (error != 0)
+ break;
+ }
+
+ return (error);
}
int
zfs_secpolicy_rename_perms(const char *from, const char *to, cred_t *cr)
{
- char parentname[MAXNAMELEN];
+ char parentname[MAXNAMELEN];
int error;
if ((error = zfs_secpolicy_write_perms(from,
return (error);
}
+/* ARGSUSED */
static int
-zfs_secpolicy_rename(zfs_cmd_t *zc, cred_t *cr)
+zfs_secpolicy_rename(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
{
return (zfs_secpolicy_rename_perms(zc->zc_name, zc->zc_value, cr));
}
+/* ARGSUSED */
static int
-zfs_secpolicy_promote(zfs_cmd_t *zc, cred_t *cr)
+zfs_secpolicy_promote(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
{
- char parentname[MAXNAMELEN];
- objset_t *clone;
+ dsl_pool_t *dp;
+ dsl_dataset_t *clone;
int error;
error = zfs_secpolicy_write_perms(zc->zc_name,
ZFS_DELEG_PERM_PROMOTE, cr);
- if (error)
+ if (error != 0)
+ return (error);
+
+ error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
+ if (error != 0)
return (error);
- error = dmu_objset_open(zc->zc_name, DMU_OST_ANY,
- DS_MODE_USER | DS_MODE_READONLY, &clone);
+ error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &clone);
if (error == 0) {
- dsl_dataset_t *pclone = NULL;
+ char parentname[MAXNAMELEN];
+ dsl_dataset_t *origin = NULL;
dsl_dir_t *dd;
- dd = clone->os->os_dsl_dataset->ds_dir;
+ dd = clone->ds_dir;
- rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER);
error = dsl_dataset_hold_obj(dd->dd_pool,
- dd->dd_phys->dd_origin_obj, FTAG, &pclone);
- rw_exit(&dd->dd_pool->dp_config_rwlock);
- if (error) {
- dmu_objset_close(clone);
+ dd->dd_phys->dd_origin_obj, FTAG, &origin);
+ if (error != 0) {
+ dsl_dataset_rele(clone, FTAG);
+ dsl_pool_rele(dp, FTAG);
return (error);
}
- error = zfs_secpolicy_write_perms(zc->zc_name,
+ error = zfs_secpolicy_write_perms_ds(zc->zc_name, clone,
ZFS_DELEG_PERM_MOUNT, cr);
- dsl_dataset_name(pclone, parentname);
- dmu_objset_close(clone);
- dsl_dataset_rele(pclone, FTAG);
- if (error == 0)
- error = zfs_secpolicy_write_perms(parentname,
+ dsl_dataset_name(origin, parentname);
+ if (error == 0) {
+ error = zfs_secpolicy_write_perms_ds(parentname, origin,
ZFS_DELEG_PERM_PROMOTE, cr);
+ }
+ dsl_dataset_rele(clone, FTAG);
+ dsl_dataset_rele(origin, FTAG);
}
+ dsl_pool_rele(dp, FTAG);
return (error);
}
+/* ARGSUSED */
static int
-zfs_secpolicy_receive(zfs_cmd_t *zc, cred_t *cr)
+zfs_secpolicy_recv(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
{
int error;
int
zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr)
{
- int error;
+ return (zfs_secpolicy_write_perms(name,
+ ZFS_DELEG_PERM_SNAPSHOT, cr));
+}
- if ((error = zfs_secpolicy_write_perms(name,
- ZFS_DELEG_PERM_SNAPSHOT, cr)) != 0)
- return (error);
+/*
+ * Check for permission to create each snapshot in the nvlist.
+ */
+/* ARGSUSED */
+static int
+zfs_secpolicy_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
+{
+ nvlist_t *snaps;
+ int error = 0;
+ nvpair_t *pair;
- error = zfs_secpolicy_write_perms(name,
- ZFS_DELEG_PERM_MOUNT, cr);
+ if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
+ return (SET_ERROR(EINVAL));
+ for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
+ pair = nvlist_next_nvpair(snaps, pair)) {
+ char *name = nvpair_name(pair);
+ char *atp = strchr(name, '@');
+ if (atp == NULL) {
+ error = SET_ERROR(EINVAL);
+ break;
+ }
+ *atp = '\0';
+ error = zfs_secpolicy_snapshot_perms(name, cr);
+ *atp = '@';
+ if (error != 0)
+ break;
+ }
return (error);
}
+/* ARGSUSED */
static int
-zfs_secpolicy_snapshot(zfs_cmd_t *zc, cred_t *cr)
+zfs_secpolicy_log_history(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
{
-
- return (zfs_secpolicy_snapshot_perms(zc->zc_name, cr));
+ /*
+ * Even root must have a proper TSD so that we know what pool
+ * to log to.
+ */
+ if (tsd_get(zfs_allow_log_key) == NULL)
+ return (SET_ERROR(EPERM));
+ return (0);
}
static int
-zfs_secpolicy_create(zfs_cmd_t *zc, cred_t *cr)
+zfs_secpolicy_create_clone(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
{
- char parentname[MAXNAMELEN];
- int error;
+ char parentname[MAXNAMELEN];
+ int error;
+ char *origin;
if ((error = zfs_get_parent(zc->zc_name, parentname,
sizeof (parentname))) != 0)
return (error);
- if (zc->zc_value[0] != '\0') {
- if ((error = zfs_secpolicy_write_perms(zc->zc_value,
- ZFS_DELEG_PERM_CLONE, cr)) != 0)
- return (error);
- }
+ if (nvlist_lookup_string(innvl, "origin", &origin) == 0 &&
+ (error = zfs_secpolicy_write_perms(origin,
+ ZFS_DELEG_PERM_CLONE, cr)) != 0)
+ return (error);
if ((error = zfs_secpolicy_write_perms(parentname,
ZFS_DELEG_PERM_CREATE, cr)) != 0)
return (error);
- error = zfs_secpolicy_write_perms(parentname,
- ZFS_DELEG_PERM_MOUNT, cr);
-
- return (error);
-}
-
-static int
-zfs_secpolicy_umount(zfs_cmd_t *zc, cred_t *cr)
-{
- int error;
-
- error = secpolicy_fs_unmount(cr, NULL);
- if (error) {
- error = dsl_deleg_access(zc->zc_name, ZFS_DELEG_PERM_MOUNT, cr);
- }
- return (error);
+ return (zfs_secpolicy_write_perms(parentname,
+ ZFS_DELEG_PERM_MOUNT, cr));
}
/*
*/
/* ARGSUSED */
static int
-zfs_secpolicy_config(zfs_cmd_t *zc, cred_t *cr)
+zfs_secpolicy_config(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
{
if (secpolicy_sys_config(cr, B_FALSE) != 0)
- return (EPERM);
+ return (SET_ERROR(EPERM));
return (0);
}
/*
- * Just like zfs_secpolicy_config, except that we will check for
- * mount permission on the dataset for permission to create/remove
- * the minor nodes.
+ * Policy for object to name lookups.
*/
+/* ARGSUSED */
static int
-zfs_secpolicy_minor(zfs_cmd_t *zc, cred_t *cr)
+zfs_secpolicy_diff(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
{
- if (secpolicy_sys_config(cr, B_FALSE) != 0) {
- return (dsl_deleg_access(zc->zc_name,
- ZFS_DELEG_PERM_MOUNT, cr));
- }
+ int error;
- return (0);
-}
+ if ((error = secpolicy_sys_config(cr, B_FALSE)) == 0)
+ return (0);
+
+ error = zfs_secpolicy_write_perms(zc->zc_name, ZFS_DELEG_PERM_DIFF, cr);
+ return (error);
+}
/*
* Policy for fault injection. Requires all privileges.
*/
/* ARGSUSED */
static int
-zfs_secpolicy_inject(zfs_cmd_t *zc, cred_t *cr)
+zfs_secpolicy_inject(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
{
return (secpolicy_zinject(cr));
}
+/* ARGSUSED */
static int
-zfs_secpolicy_inherit(zfs_cmd_t *zc, cred_t *cr)
+zfs_secpolicy_inherit_prop(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
{
zfs_prop_t prop = zfs_name_to_prop(zc->zc_value);
if (prop == ZPROP_INVAL) {
if (!zfs_prop_user(zc->zc_value))
- return (EINVAL);
+ return (SET_ERROR(EINVAL));
return (zfs_secpolicy_write_perms(zc->zc_name,
ZFS_DELEG_PERM_USERPROP, cr));
} else {
- if (!zfs_prop_inheritable(prop))
- return (EINVAL);
- return (zfs_secpolicy_setprop(zc->zc_name, prop, cr));
+ return (zfs_secpolicy_setprop(zc->zc_name, prop,
+ NULL, cr));
+ }
+}
+
+static int
+zfs_secpolicy_userspace_one(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
+{
+ int err = zfs_secpolicy_read(zc, innvl, cr);
+ if (err)
+ return (err);
+
+ if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
+ return (SET_ERROR(EINVAL));
+
+ if (zc->zc_value[0] == 0) {
+ /*
+ * They are asking about a posix uid/gid. If it's
+ * themself, allow it.
+ */
+ if (zc->zc_objset_type == ZFS_PROP_USERUSED ||
+ zc->zc_objset_type == ZFS_PROP_USERQUOTA) {
+ if (zc->zc_guid == crgetuid(cr))
+ return (0);
+ } else {
+ if (groupmember(zc->zc_guid, cr))
+ return (0);
+ }
+ }
+
+ return (zfs_secpolicy_write_perms(zc->zc_name,
+ userquota_perms[zc->zc_objset_type], cr));
+}
+
+static int
+zfs_secpolicy_userspace_many(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
+{
+ int err = zfs_secpolicy_read(zc, innvl, cr);
+ if (err)
+ return (err);
+
+ if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
+ return (SET_ERROR(EINVAL));
+
+ return (zfs_secpolicy_write_perms(zc->zc_name,
+ userquota_perms[zc->zc_objset_type], cr));
+}
+
+/* ARGSUSED */
+static int
+zfs_secpolicy_userspace_upgrade(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
+{
+ return (zfs_secpolicy_setprop(zc->zc_name, ZFS_PROP_VERSION,
+ NULL, cr));
+}
+
+/* ARGSUSED */
+static int
+zfs_secpolicy_hold(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
+{
+ nvpair_t *pair;
+ nvlist_t *holds;
+ int error;
+
+ error = nvlist_lookup_nvlist(innvl, "holds", &holds);
+ if (error != 0)
+ return (SET_ERROR(EINVAL));
+
+ for (pair = nvlist_next_nvpair(holds, NULL); pair != NULL;
+ pair = nvlist_next_nvpair(holds, pair)) {
+ char fsname[MAXNAMELEN];
+ error = dmu_fsname(nvpair_name(pair), fsname);
+ if (error != 0)
+ return (error);
+ error = zfs_secpolicy_write_perms(fsname,
+ ZFS_DELEG_PERM_HOLD, cr);
+ if (error != 0)
+ return (error);
+ }
+ return (0);
+}
+
+/* ARGSUSED */
+static int
+zfs_secpolicy_release(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
+{
+ nvpair_t *pair;
+ int error;
+
+ for (pair = nvlist_next_nvpair(innvl, NULL); pair != NULL;
+ pair = nvlist_next_nvpair(innvl, pair)) {
+ char fsname[MAXNAMELEN];
+ error = dmu_fsname(nvpair_name(pair), fsname);
+ if (error != 0)
+ return (error);
+ error = zfs_secpolicy_write_perms(fsname,
+ ZFS_DELEG_PERM_RELEASE, cr);
+ if (error != 0)
+ return (error);
}
+ return (0);
+}
+
+/*
+ * Policy for allowing temporary snapshots to be taken or released
+ */
+static int
+zfs_secpolicy_tmp_snapshot(zfs_cmd_t *zc, nvlist_t *innvl, cred_t *cr)
+{
+ /*
+ * A temporary snapshot is the same as a snapshot,
+ * hold, destroy and release all rolled into one.
+ * Delegated diff alone is sufficient that we allow this.
+ */
+ int error;
+
+ if ((error = zfs_secpolicy_write_perms(zc->zc_name,
+ ZFS_DELEG_PERM_DIFF, cr)) == 0)
+ return (0);
+
+ error = zfs_secpolicy_snapshot_perms(zc->zc_name, cr);
+ if (error == 0)
+ error = zfs_secpolicy_hold(zc, innvl, cr);
+ if (error == 0)
+ error = zfs_secpolicy_release(zc, innvl, cr);
+ if (error == 0)
+ error = zfs_secpolicy_destroy(zc, innvl, cr);
+ return (error);
}
/*
* Returns the nvlist as specified by the user in the zfs_cmd_t.
*/
static int
-get_nvlist(uint64_t nvl, uint64_t size, nvlist_t **nvp)
+get_nvlist(uint64_t nvl, uint64_t size, int iflag, nvlist_t **nvp)
{
char *packed;
int error;
* Read in and unpack the user-supplied nvlist.
*/
if (size == 0)
- return (EINVAL);
+ return (SET_ERROR(EINVAL));
- packed = kmem_alloc(size, KM_SLEEP);
+ packed = kmem_alloc(size, KM_SLEEP | KM_NODEBUG);
- if ((error = xcopyin((void *)(uintptr_t)nvl, packed, size)) != 0) {
+ if ((error = ddi_copyin((void *)(uintptr_t)nvl, packed, size,
+ iflag)) != 0) {
kmem_free(packed, size);
return (error);
}
return (0);
}
+/*
+ * Reduce the size of this nvlist until it can be serialized in 'max' bytes.
+ * Entries will be removed from the end of the nvlist, and one int32 entry
+ * named "N_MORE_ERRORS" will be added indicating how many entries were
+ * removed.
+ */
+static int
+nvlist_smush(nvlist_t *errors, size_t max)
+{
+ size_t size;
+
+ size = fnvlist_size(errors);
+
+ if (size > max) {
+ nvpair_t *more_errors;
+ int n = 0;
+
+ if (max < 1024)
+ return (SET_ERROR(ENOMEM));
+
+ fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, 0);
+ more_errors = nvlist_prev_nvpair(errors, NULL);
+
+ do {
+ nvpair_t *pair = nvlist_prev_nvpair(errors,
+ more_errors);
+ fnvlist_remove_nvpair(errors, pair);
+ n++;
+ size = fnvlist_size(errors);
+ } while (size > max);
+
+ fnvlist_remove_nvpair(errors, more_errors);
+ fnvlist_add_int32(errors, ZPROP_N_MORE_ERRORS, n);
+ ASSERT3U(fnvlist_size(errors), <=, max);
+ }
+
+ return (0);
+}
+
static int
put_nvlist(zfs_cmd_t *zc, nvlist_t *nvl)
{
char *packed = NULL;
+ int error = 0;
size_t size;
- int error;
- VERIFY(nvlist_size(nvl, &size, NV_ENCODE_NATIVE) == 0);
+ size = fnvlist_size(nvl);
if (size > zc->zc_nvlist_dst_size) {
- error = ENOMEM;
+ error = SET_ERROR(ENOMEM);
} else {
- packed = kmem_alloc(size, KM_SLEEP);
- VERIFY(nvlist_pack(nvl, &packed, &size, NV_ENCODE_NATIVE,
- KM_SLEEP) == 0);
- error = xcopyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst,
- size);
- kmem_free(packed, size);
+ packed = fnvlist_pack(nvl, &size);
+ if (ddi_copyout(packed, (void *)(uintptr_t)zc->zc_nvlist_dst,
+ size, zc->zc_iflags) != 0)
+ error = SET_ERROR(EFAULT);
+ fnvlist_pack_free(packed, size);
}
zc->zc_nvlist_dst_size = size;
+ zc->zc_nvlist_dst_filled = B_TRUE;
+ return (error);
+}
+
+static int
+get_zfs_sb(const char *dsname, zfs_sb_t **zsbp)
+{
+ objset_t *os;
+ int error;
+
+ error = dmu_objset_hold(dsname, FTAG, &os);
+ if (error != 0)
+ return (error);
+ if (dmu_objset_type(os) != DMU_OST_ZFS) {
+ dmu_objset_rele(os, FTAG);
+ return (SET_ERROR(EINVAL));
+ }
+
+ mutex_enter(&os->os_user_ptr_lock);
+ *zsbp = dmu_objset_get_user(os);
+ if (*zsbp && (*zsbp)->z_sb) {
+ atomic_inc(&((*zsbp)->z_sb->s_active));
+ } else {
+ error = SET_ERROR(ESRCH);
+ }
+ mutex_exit(&os->os_user_ptr_lock);
+ dmu_objset_rele(os, FTAG);
+ return (error);
+}
+
+/*
+ * Find a zfs_sb_t for a mounted filesystem, or create our own, in which
+ * case its z_sb will be NULL, and it will be opened as the owner.
+ * If 'writer' is set, the z_teardown_lock will be held for RW_WRITER,
+ * which prevents all inode ops from running.
+ */
+static int
+zfs_sb_hold(const char *name, void *tag, zfs_sb_t **zsbp, boolean_t writer)
+{
+ int error = 0;
+
+ if (get_zfs_sb(name, zsbp) != 0)
+ error = zfs_sb_create(name, zsbp);
+ if (error == 0) {
+ rrw_enter(&(*zsbp)->z_teardown_lock, (writer) ? RW_WRITER :
+ RW_READER, tag);
+ if ((*zsbp)->z_unmounted) {
+ /*
+ * XXX we could probably try again, since the unmounting
+ * thread should be just about to disassociate the
+ * objset from the zsb.
+ */
+ rrw_exit(&(*zsbp)->z_teardown_lock, tag);
+ return (SET_ERROR(EBUSY));
+ }
+ }
return (error);
}
+static void
+zfs_sb_rele(zfs_sb_t *zsb, void *tag)
+{
+ rrw_exit(&zsb->z_teardown_lock, tag);
+
+ if (zsb->z_sb) {
+ deactivate_super(zsb->z_sb);
+ } else {
+ dmu_objset_disown(zsb->z_os, zsb);
+ zfs_sb_free(zsb);
+ }
+}
+
static int
zfs_ioc_pool_create(zfs_cmd_t *zc)
{
nvlist_t *config, *props = NULL;
nvlist_t *rootprops = NULL;
nvlist_t *zplprops = NULL;
- char *buf;
- if (error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
- &config))
+ if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
+ zc->zc_iflags, &config)))
return (error);
if (zc->zc_nvlist_src_size != 0 && (error =
- get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) {
+ get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
+ zc->zc_iflags, &props))) {
nvlist_free(config);
return (error);
}
(void) nvlist_lookup_uint64(props,
zpool_prop_to_name(ZPOOL_PROP_VERSION), &version);
- if (version < SPA_VERSION_INITIAL || version > SPA_VERSION) {
- error = EINVAL;
+ if (!SPA_VERSION_IS_SUPPORTED(version)) {
+ error = SET_ERROR(EINVAL);
goto pool_props_bad;
}
(void) nvlist_lookup_nvlist(props, ZPOOL_ROOTFS_PROPS, &nvl);
VERIFY(nvlist_alloc(&zplprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
error = zfs_fill_zplprops_root(version, rootprops,
zplprops, NULL);
- if (error)
+ if (error != 0)
goto pool_props_bad;
}
- buf = history_str_get(zc);
-
- error = spa_create(zc->zc_name, config, props, buf, zplprops);
+ error = spa_create(zc->zc_name, config, props, zplprops);
/*
* Set the remaining root properties
*/
- if (!error &&
- (error = zfs_set_prop_nvlist(zc->zc_name, rootprops)) != 0)
+ if (!error && (error = zfs_set_prop_nvlist(zc->zc_name,
+ ZPROP_SRC_LOCAL, rootprops, NULL)) != 0)
(void) spa_destroy(zc->zc_name);
- if (buf != NULL)
- history_str_free(buf);
-
pool_props_bad:
nvlist_free(rootprops);
nvlist_free(zplprops);
int error;
zfs_log_history(zc);
error = spa_destroy(zc->zc_name);
+ if (error == 0)
+ zvol_remove_minors(zc->zc_name);
return (error);
}
static int
zfs_ioc_pool_import(zfs_cmd_t *zc)
{
- int error;
nvlist_t *config, *props = NULL;
uint64_t guid;
+ int error;
if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
- &config)) != 0)
+ zc->zc_iflags, &config)) != 0)
return (error);
if (zc->zc_nvlist_src_size != 0 && (error =
- get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size, &props))) {
+ get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
+ zc->zc_iflags, &props))) {
nvlist_free(config);
return (error);
}
if (nvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_GUID, &guid) != 0 ||
guid != zc->zc_guid)
- error = EINVAL;
- else if (zc->zc_cookie)
- error = spa_import_faulted(zc->zc_name, config,
- props);
+ error = SET_ERROR(EINVAL);
else
- error = spa_import(zc->zc_name, config, props);
+ error = spa_import(zc->zc_name, config, props, zc->zc_cookie);
+
+ if (zc->zc_nvlist_dst != 0) {
+ int err;
+
+ if ((err = put_nvlist(zc, config)) != 0)
+ error = err;
+ }
nvlist_free(config);
zfs_log_history(zc);
error = spa_export(zc->zc_name, NULL, force, hardforce);
+ if (error == 0)
+ zvol_remove_minors(zc->zc_name);
return (error);
}
int error;
if ((configs = spa_all_configs(&zc->zc_cookie)) == NULL)
- return (EEXIST);
+ return (SET_ERROR(EEXIST));
error = put_nvlist(zc, configs);
return (error);
}
+/*
+ * inputs:
+ * zc_name name of the pool
+ *
+ * outputs:
+ * zc_cookie real errno
+ * zc_nvlist_dst config nvlist
+ * zc_nvlist_dst_size size of config nvlist
+ */
static int
zfs_ioc_pool_stats(zfs_cmd_t *zc)
{
int error;
if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
- &tryconfig)) != 0)
+ zc->zc_iflags, &tryconfig)) != 0)
return (error);
config = spa_tryimport(tryconfig);
nvlist_free(tryconfig);
if (config == NULL)
- return (EINVAL);
+ return (SET_ERROR(EINVAL));
error = put_nvlist(zc, config);
nvlist_free(config);
return (error);
}
+/*
+ * inputs:
+ * zc_name name of the pool
+ * zc_cookie scan func (pool_scan_func_t)
+ */
static int
-zfs_ioc_pool_scrub(zfs_cmd_t *zc)
+zfs_ioc_pool_scan(zfs_cmd_t *zc)
{
spa_t *spa;
int error;
if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
return (error);
- error = spa_scrub(spa, zc->zc_cookie);
+ if (zc->zc_cookie == POOL_SCAN_NONE)
+ error = spa_scan_stop(spa);
+ else
+ error = spa_scan(spa, zc->zc_cookie);
spa_close(spa, FTAG);
if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
return (error);
- if (zc->zc_cookie < spa_version(spa) || zc->zc_cookie > SPA_VERSION) {
+ if (zc->zc_cookie < spa_version(spa) ||
+ !SPA_VERSION_IS_SUPPORTED(zc->zc_cookie)) {
spa_close(spa, FTAG);
- return (EINVAL);
+ return (SET_ERROR(EINVAL));
}
spa_upgrade(spa, zc->zc_cookie);
int error;
if ((size = zc->zc_history_len) == 0)
- return (EINVAL);
+ return (SET_ERROR(EINVAL));
if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
return (error);
if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) {
spa_close(spa, FTAG);
- return (ENOTSUP);
+ return (SET_ERROR(ENOTSUP));
}
- hist_buf = kmem_alloc(size, KM_SLEEP);
+ hist_buf = vmem_alloc(size, KM_SLEEP);
if ((error = spa_history_get(spa, &zc->zc_history_offset,
&zc->zc_history_len, hist_buf)) == 0) {
- error = xcopyout(hist_buf,
- (char *)(uintptr_t)zc->zc_history,
- zc->zc_history_len);
+ error = ddi_copyout(hist_buf,
+ (void *)(uintptr_t)zc->zc_history,
+ zc->zc_history_len, zc->zc_iflags);
}
spa_close(spa, FTAG);
- kmem_free(hist_buf, size);
+ vmem_free(hist_buf, size);
+ return (error);
+}
+
+static int
+zfs_ioc_pool_reguid(zfs_cmd_t *zc)
+{
+ spa_t *spa;
+ int error;
+
+ error = spa_open(zc->zc_name, &spa, FTAG);
+ if (error == 0) {
+ error = spa_change_guid(spa);
+ spa_close(spa, FTAG);
+ }
return (error);
}
static int
zfs_ioc_dsobj_to_dsname(zfs_cmd_t *zc)
{
+ return (dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value));
+}
+
+/*
+ * inputs:
+ * zc_name name of filesystem
+ * zc_obj object to find
+ *
+ * outputs:
+ * zc_value name of object
+ */
+static int
+zfs_ioc_obj_to_path(zfs_cmd_t *zc)
+{
+ objset_t *os;
int error;
- if (error = dsl_dsobj_to_dsname(zc->zc_name, zc->zc_obj, zc->zc_value))
+ /* XXX reading from objset not owned */
+ if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0)
return (error);
+ if (dmu_objset_type(os) != DMU_OST_ZFS) {
+ dmu_objset_rele(os, FTAG);
+ return (SET_ERROR(EINVAL));
+ }
+ error = zfs_obj_to_path(os, zc->zc_obj, zc->zc_value,
+ sizeof (zc->zc_value));
+ dmu_objset_rele(os, FTAG);
- return (0);
+ return (error);
}
+/*
+ * inputs:
+ * zc_name name of filesystem
+ * zc_obj object to find
+ *
+ * outputs:
+ * zc_stat stats on object
+ * zc_value path to object
+ */
static int
-zfs_ioc_obj_to_path(zfs_cmd_t *zc)
+zfs_ioc_obj_to_stats(zfs_cmd_t *zc)
{
- objset_t *osp;
+ objset_t *os;
int error;
- if ((error = dmu_objset_open(zc->zc_name, DMU_OST_ZFS,
- DS_MODE_USER | DS_MODE_READONLY, &osp)) != 0)
+ /* XXX reading from objset not owned */
+ if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os)) != 0)
return (error);
- error = zfs_obj_to_path(osp, zc->zc_obj, zc->zc_value,
+ if (dmu_objset_type(os) != DMU_OST_ZFS) {
+ dmu_objset_rele(os, FTAG);
+ return (SET_ERROR(EINVAL));
+ }
+ error = zfs_obj_to_stats(os, zc->zc_obj, &zc->zc_stat, zc->zc_value,
sizeof (zc->zc_value));
- dmu_objset_close(osp);
+ dmu_objset_rele(os, FTAG);
return (error);
}
{
spa_t *spa;
int error;
- nvlist_t *config, **l2cache, **spares;
- uint_t nl2cache = 0, nspares = 0;
+ nvlist_t *config;
error = spa_open(zc->zc_name, &spa, FTAG);
if (error != 0)
return (error);
error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
- &config);
- (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_L2CACHE,
- &l2cache, &nl2cache);
-
- (void) nvlist_lookup_nvlist_array(config, ZPOOL_CONFIG_SPARES,
- &spares, &nspares);
-
- /*
- * A root pool with concatenated devices is not supported.
- * Thus, can not add a device to a root pool.
- *
- * Intent log device can not be added to a rootpool because
- * during mountroot, zil is replayed, a seperated log device
- * can not be accessed during the mountroot time.
- *
- * l2cache and spare devices are ok to be added to a rootpool.
- */
- if (spa->spa_bootfs != 0 && nl2cache == 0 && nspares == 0) {
- spa_close(spa, FTAG);
- return (EDOM);
- }
-
+ zc->zc_iflags, &config);
if (error == 0) {
error = spa_vdev_add(spa, config);
nvlist_free(config);
return (error);
}
+/*
+ * inputs:
+ * zc_name name of the pool
+ * zc_nvlist_conf nvlist of devices to remove
+ * zc_cookie to stop the remove?
+ */
static int
zfs_ioc_vdev_remove(zfs_cmd_t *zc)
{
break;
case VDEV_STATE_FAULTED:
- error = vdev_fault(spa, zc->zc_guid);
+ if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED &&
+ zc->zc_obj != VDEV_AUX_EXTERNAL)
+ zc->zc_obj = VDEV_AUX_ERR_EXCEEDED;
+
+ error = vdev_fault(spa, zc->zc_guid, zc->zc_obj);
break;
case VDEV_STATE_DEGRADED:
- error = vdev_degrade(spa, zc->zc_guid);
+ if (zc->zc_obj != VDEV_AUX_ERR_EXCEEDED &&
+ zc->zc_obj != VDEV_AUX_EXTERNAL)
+ zc->zc_obj = VDEV_AUX_ERR_EXCEEDED;
+
+ error = vdev_degrade(spa, zc->zc_guid, zc->zc_obj);
break;
default:
- error = EINVAL;
+ error = SET_ERROR(EINVAL);
}
zc->zc_cookie = newstate;
spa_close(spa, FTAG);
return (error);
if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
- &config)) == 0) {
+ zc->zc_iflags, &config)) == 0) {
error = spa_vdev_attach(spa, zc->zc_guid, config, replacing);
nvlist_free(config);
}
return (error);
}
+static int
+zfs_ioc_vdev_split(zfs_cmd_t *zc)
+{
+ spa_t *spa;
+ nvlist_t *config, *props = NULL;
+ int error;
+ boolean_t exp = !!(zc->zc_cookie & ZPOOL_EXPORT_AFTER_SPLIT);
+
+ if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
+ return (error);
+
+ if ((error = get_nvlist(zc->zc_nvlist_conf, zc->zc_nvlist_conf_size,
+ zc->zc_iflags, &config))) {
+ spa_close(spa, FTAG);
+ return (error);
+ }
+
+ if (zc->zc_nvlist_src_size != 0 && (error =
+ get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
+ zc->zc_iflags, &props))) {
+ spa_close(spa, FTAG);
+ nvlist_free(config);
+ return (error);
+ }
+
+ error = spa_vdev_split_mirror(spa, zc->zc_string, config, props, exp);
+
+ spa_close(spa, FTAG);
+
+ nvlist_free(config);
+ nvlist_free(props);
+
+ return (error);
+}
+
static int
zfs_ioc_vdev_setpath(zfs_cmd_t *zc)
{
return (error);
}
-/*
- * inputs:
- * zc_name name of filesystem
- * zc_nvlist_dst_size size of buffer for property nvlist
- *
- * outputs:
- * zc_objset_stats stats
- * zc_nvlist_dst property nvlist
- * zc_nvlist_dst_size size of property nvlist
- */
static int
-zfs_ioc_objset_stats(zfs_cmd_t *zc)
+zfs_ioc_vdev_setfru(zfs_cmd_t *zc)
{
- objset_t *os = NULL;
+ spa_t *spa;
+ char *fru = zc->zc_value;
+ uint64_t guid = zc->zc_guid;
int error;
- nvlist_t *nv;
- if (error = dmu_objset_open(zc->zc_name,
- DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os))
+ error = spa_open(zc->zc_name, &spa, FTAG);
+ if (error != 0)
return (error);
+ error = spa_vdev_setfru(spa, guid, fru);
+ spa_close(spa, FTAG);
+ return (error);
+}
+
+static int
+zfs_ioc_objset_stats_impl(zfs_cmd_t *zc, objset_t *os)
+{
+ int error = 0;
+ nvlist_t *nv;
+
dmu_objset_fast_stat(os, &zc->zc_objset_stats);
if (zc->zc_nvlist_dst != 0 &&
- (error = dsl_prop_get_all(os, &nv, FALSE)) == 0) {
+ (error = dsl_prop_get_all(os, &nv)) == 0) {
dmu_objset_stats(os, nv);
/*
* NB: zvol_get_stats() will read the objset contents,
* which we aren't supposed to do with a
* DS_MODE_USER hold, because it could be
* inconsistent. So this is a bit of a workaround...
+ * XXX reading with out owning
*/
- if (!zc->zc_objset_stats.dds_inconsistent) {
- if (dmu_objset_type(os) == DMU_OST_ZVOL)
- VERIFY(zvol_get_stats(os, nv) == 0);
+ if (!zc->zc_objset_stats.dds_inconsistent &&
+ dmu_objset_type(os) == DMU_OST_ZVOL) {
+ error = zvol_get_stats(os, nv);
+ if (error == EIO)
+ return (error);
+ VERIFY0(error);
}
+ if (error == 0)
+ error = put_nvlist(zc, nv);
+ nvlist_free(nv);
+ }
+
+ return (error);
+}
+
+/*
+ * inputs:
+ * zc_name name of filesystem
+ * zc_nvlist_dst_size size of buffer for property nvlist
+ *
+ * outputs:
+ * zc_objset_stats stats
+ * zc_nvlist_dst property nvlist
+ * zc_nvlist_dst_size size of property nvlist
+ */
+static int
+zfs_ioc_objset_stats(zfs_cmd_t *zc)
+{
+ objset_t *os;
+ int error;
+
+ error = dmu_objset_hold(zc->zc_name, FTAG, &os);
+ if (error == 0) {
+ error = zfs_ioc_objset_stats_impl(zc, os);
+ dmu_objset_rele(os, FTAG);
+ }
+
+ return (error);
+}
+
+/*
+ * inputs:
+ * zc_name name of filesystem
+ * zc_nvlist_dst_size size of buffer for property nvlist
+ *
+ * outputs:
+ * zc_nvlist_dst received property nvlist
+ * zc_nvlist_dst_size size of received property nvlist
+ *
+ * Gets received properties (distinct from local properties on or after
+ * SPA_VERSION_RECVD_PROPS) for callers who want to differentiate received from
+ * local property values.
+ */
+static int
+zfs_ioc_objset_recvd_props(zfs_cmd_t *zc)
+{
+ int error = 0;
+ nvlist_t *nv;
+
+ /*
+ * Without this check, we would return local property values if the
+ * caller has not already received properties on or after
+ * SPA_VERSION_RECVD_PROPS.
+ */
+ if (!dsl_prop_get_hasrecvd(zc->zc_name))
+ return (SET_ERROR(ENOTSUP));
+
+ if (zc->zc_nvlist_dst != 0 &&
+ (error = dsl_prop_get_received(zc->zc_name, &nv)) == 0) {
error = put_nvlist(zc, nv);
nvlist_free(nv);
}
- dmu_objset_close(os);
return (error);
}
objset_t *os;
int err;
- if (err = dmu_objset_open(zc->zc_name,
- DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os))
+ /* XXX reading without owning */
+ if ((err = dmu_objset_hold(zc->zc_name, FTAG, &os)))
return (err);
dmu_objset_fast_stat(os, &zc->zc_objset_stats);
* which we aren't supposed to do with a DS_MODE_USER
* hold, because it could be inconsistent.
*/
- if (zc->zc_nvlist_dst != NULL &&
+ if (zc->zc_nvlist_dst != 0 &&
!zc->zc_objset_stats.dds_inconsistent &&
dmu_objset_type(os) == DMU_OST_ZFS) {
nvlist_t *nv;
err = put_nvlist(zc, nv);
nvlist_free(nv);
} else {
- err = ENOENT;
+ err = SET_ERROR(ENOENT);
}
- dmu_objset_close(os);
+ dmu_objset_rele(os, FTAG);
return (err);
}
+boolean_t
+dataset_name_hidden(const char *name)
+{
+ /*
+ * Skip over datasets that are not visible in this zone,
+ * internal datasets (which have a $ in their name), and
+ * temporary datasets (which have a % in their name).
+ */
+ if (strchr(name, '$') != NULL)
+ return (B_TRUE);
+ if (strchr(name, '%') != NULL)
+ return (B_TRUE);
+ if (!INGLOBALZONE(curproc) && !zone_dataset_visible(name, NULL))
+ return (B_TRUE);
+ return (B_FALSE);
+}
+
/*
* inputs:
* zc_name name of filesystem
*
* outputs:
* zc_name name of next filesystem
+ * zc_cookie zap cursor
* zc_objset_stats stats
* zc_nvlist_dst property nvlist
* zc_nvlist_dst_size size of property nvlist
objset_t *os;
int error;
char *p;
+ size_t orig_len = strlen(zc->zc_name);
- if (error = dmu_objset_open(zc->zc_name,
- DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os)) {
+top:
+ if ((error = dmu_objset_hold(zc->zc_name, FTAG, &os))) {
if (error == ENOENT)
- error = ESRCH;
+ error = SET_ERROR(ESRCH);
return (error);
}
(void) strlcat(zc->zc_name, "/", sizeof (zc->zc_name));
p = zc->zc_name + strlen(zc->zc_name);
- if (zc->zc_cookie == 0) {
- uint64_t cookie = 0;
- int len = sizeof (zc->zc_name) - (p - zc->zc_name);
-
- while (dmu_dir_list_next(os, len, p, NULL, &cookie) == 0)
- dmu_objset_prefetch(p, NULL);
- }
-
do {
error = dmu_dir_list_next(os,
sizeof (zc->zc_name) - (p - zc->zc_name), p,
NULL, &zc->zc_cookie);
if (error == ENOENT)
- error = ESRCH;
- } while (error == 0 && !INGLOBALZONE(curproc) &&
- !zone_dataset_visible(zc->zc_name, NULL));
- dmu_objset_close(os);
+ error = SET_ERROR(ESRCH);
+ } while (error == 0 && dataset_name_hidden(zc->zc_name));
+ dmu_objset_rele(os, FTAG);
/*
- * If it's a hidden dataset (ie. with a '$' in its name), don't
- * try to get stats for it. Userland will skip over it.
+ * If it's an internal dataset (ie. with a '$' in its name),
+ * don't try to get stats for it, otherwise we'll return ENOENT.
*/
- if (error == 0 && strchr(zc->zc_name, '$') == NULL)
+ if (error == 0 && strchr(zc->zc_name, '$') == NULL) {
error = zfs_ioc_objset_stats(zc); /* fill in the stats */
-
+ if (error == ENOENT) {
+ /* We lost a race with destroy, get the next one. */
+ zc->zc_name[orig_len] = '\0';
+ goto top;
+ }
+ }
return (error);
}
objset_t *os;
int error;
- error = dmu_objset_open(zc->zc_name,
- DMU_OST_ANY, DS_MODE_USER | DS_MODE_READONLY, &os);
- if (error)
+ error = dmu_objset_hold(zc->zc_name, FTAG, &os);
+ if (error != 0) {
return (error == ENOENT ? ESRCH : error);
+ }
- if (zc->zc_cookie == 0)
- dmu_objset_find(zc->zc_name, dmu_objset_prefetch,
- NULL, DS_FIND_SNAPSHOTS);
/*
* A dataset name of maximum length cannot have any snapshots,
* so exit immediately.
*/
if (strlcat(zc->zc_name, "@", sizeof (zc->zc_name)) >= MAXNAMELEN) {
- dmu_objset_close(os);
- return (ESRCH);
+ dmu_objset_rele(os, FTAG);
+ return (SET_ERROR(ESRCH));
}
error = dmu_snapshot_list_next(os,
sizeof (zc->zc_name) - strlen(zc->zc_name),
- zc->zc_name + strlen(zc->zc_name), NULL, &zc->zc_cookie, NULL);
- dmu_objset_close(os);
- if (error == 0)
- error = zfs_ioc_objset_stats(zc); /* fill in the stats */
- else if (error == ENOENT)
- error = ESRCH;
+ zc->zc_name + strlen(zc->zc_name), &zc->zc_obj, &zc->zc_cookie,
+ NULL);
+
+ if (error == 0 && !zc->zc_simple) {
+ dsl_dataset_t *ds;
+ dsl_pool_t *dp = os->os_dsl_dataset->ds_dir->dd_pool;
+ error = dsl_dataset_hold_obj(dp, zc->zc_obj, FTAG, &ds);
+ if (error == 0) {
+ objset_t *ossnap;
+
+ error = dmu_objset_from_ds(ds, &ossnap);
+ if (error == 0)
+ error = zfs_ioc_objset_stats_impl(zc, ossnap);
+ dsl_dataset_rele(ds, FTAG);
+ }
+ } else if (error == ENOENT) {
+ error = SET_ERROR(ESRCH);
+ }
+
+ dmu_objset_rele(os, FTAG);
/* if we failed, undo the @ that we tacked on to zc_name */
- if (error)
+ if (error != 0)
*strchr(zc->zc_name, '@') = '\0';
return (error);
}
-int
-zfs_set_prop_nvlist(const char *name, nvlist_t *nvl)
+static int
+zfs_prop_set_userquota(const char *dsname, nvpair_t *pair)
{
- nvpair_t *elem;
- int error;
- uint64_t intval;
- char *strval;
+ const char *propname = nvpair_name(pair);
+ uint64_t *valary;
+ unsigned int vallen;
+ const char *domain;
+ char *dash;
+ zfs_userquota_prop_t type;
+ uint64_t rid;
+ uint64_t quota;
+ zfs_sb_t *zsb;
+ int err;
+
+ if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
+ nvlist_t *attrs;
+ VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
+ if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
+ &pair) != 0)
+ return (SET_ERROR(EINVAL));
+ }
/*
- * First validate permission to set all of the properties
+ * A correctly constructed propname is encoded as
+ * userquota@<rid>-<domain>.
*/
- elem = NULL;
- while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) {
- const char *propname = nvpair_name(elem);
- zfs_prop_t prop = zfs_name_to_prop(propname);
+ if ((dash = strchr(propname, '-')) == NULL ||
+ nvpair_value_uint64_array(pair, &valary, &vallen) != 0 ||
+ vallen != 3)
+ return (SET_ERROR(EINVAL));
+
+ domain = dash + 1;
+ type = valary[0];
+ rid = valary[1];
+ quota = valary[2];
+
+ err = zfs_sb_hold(dsname, FTAG, &zsb, B_FALSE);
+ if (err == 0) {
+ err = zfs_set_userquota(zsb, type, domain, rid, quota);
+ zfs_sb_rele(zsb, FTAG);
+ }
- if (prop == ZPROP_INVAL) {
- /*
- * If this is a user-defined property, it must be a
- * string, and there is no further validation to do.
- */
- if (!zfs_prop_user(propname) ||
- nvpair_type(elem) != DATA_TYPE_STRING)
- return (EINVAL);
+ return (err);
+}
- if (error = zfs_secpolicy_write_perms(name,
- ZFS_DELEG_PERM_USERPROP, CRED()))
- return (error);
- continue;
- }
+/*
+ * If the named property is one that has a special function to set its value,
+ * return 0 on success and a positive error code on failure; otherwise if it is
+ * not one of the special properties handled by this function, return -1.
+ *
+ * XXX: It would be better for callers of the property interface if we handled
+ * these special cases in dsl_prop.c (in the dsl layer).
+ */
+static int
+zfs_prop_set_special(const char *dsname, zprop_source_t source,
+ nvpair_t *pair)
+{
+ const char *propname = nvpair_name(pair);
+ zfs_prop_t prop = zfs_name_to_prop(propname);
+ uint64_t intval;
+ int err;
- if ((error = zfs_secpolicy_setprop(name, prop, CRED())) != 0)
- return (error);
+ if (prop == ZPROP_INVAL) {
+ if (zfs_prop_userquota(propname))
+ return (zfs_prop_set_userquota(dsname, pair));
+ return (-1);
+ }
- /*
- * Check that this value is valid for this pool version
- */
- switch (prop) {
- case ZFS_PROP_COMPRESSION:
- /*
- * If the user specified gzip compression, make sure
- * the SPA supports it. We ignore any errors here since
- * we'll catch them later.
- */
- if (nvpair_type(elem) == DATA_TYPE_UINT64 &&
- nvpair_value_uint64(elem, &intval) == 0) {
- if (intval >= ZIO_COMPRESS_GZIP_1 &&
- intval <= ZIO_COMPRESS_GZIP_9 &&
- zfs_earlier_version(name,
- SPA_VERSION_GZIP_COMPRESSION))
- return (ENOTSUP);
+ if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
+ nvlist_t *attrs;
+ VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
+ VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
+ &pair) == 0);
+ }
- /*
- * If this is a bootable dataset then
- * verify that the compression algorithm
- * is supported for booting. We must return
- * something other than ENOTSUP since it
- * implies a downrev pool version.
- */
- if (zfs_is_bootfs(name) &&
- !BOOTFS_COMPRESS_VALID(intval))
- return (ERANGE);
- }
- break;
+ if (zfs_prop_get_type(prop) == PROP_TYPE_STRING)
+ return (-1);
- case ZFS_PROP_COPIES:
- if (zfs_earlier_version(name,
- SPA_VERSION_DITTO_BLOCKS))
- return (ENOTSUP);
- break;
+ VERIFY(0 == nvpair_value_uint64(pair, &intval));
+
+ switch (prop) {
+ case ZFS_PROP_QUOTA:
+ err = dsl_dir_set_quota(dsname, source, intval);
+ break;
+ case ZFS_PROP_REFQUOTA:
+ err = dsl_dataset_set_refquota(dsname, source, intval);
+ break;
+ case ZFS_PROP_RESERVATION:
+ err = dsl_dir_set_reservation(dsname, source, intval);
+ break;
+ case ZFS_PROP_REFRESERVATION:
+ err = dsl_dataset_set_refreservation(dsname, source, intval);
+ break;
+ case ZFS_PROP_VOLSIZE:
+ err = zvol_set_volsize(dsname, intval);
+ break;
+ case ZFS_PROP_SNAPDEV:
+ err = zvol_set_snapdev(dsname, intval);
+ break;
+ case ZFS_PROP_VERSION:
+ {
+ zfs_sb_t *zsb;
- case ZFS_PROP_SHARESMB:
- if (zpl_earlier_version(name, ZPL_VERSION_FUID))
- return (ENOTSUP);
+ if ((err = zfs_sb_hold(dsname, FTAG, &zsb, B_TRUE)) != 0)
break;
- case ZFS_PROP_ACLINHERIT:
- if (nvpair_type(elem) == DATA_TYPE_UINT64 &&
- nvpair_value_uint64(elem, &intval) == 0)
- if (intval == ZFS_ACL_PASSTHROUGH_X &&
- zfs_earlier_version(name,
- SPA_VERSION_PASSTHROUGH_X))
- return (ENOTSUP);
- }
- }
+ err = zfs_set_version(zsb, intval);
+ zfs_sb_rele(zsb, FTAG);
- elem = NULL;
- while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) {
- const char *propname = nvpair_name(elem);
- zfs_prop_t prop = zfs_name_to_prop(propname);
+ if (err == 0 && intval >= ZPL_VERSION_USERSPACE) {
+ zfs_cmd_t *zc;
- if (prop == ZPROP_INVAL) {
- VERIFY(nvpair_value_string(elem, &strval) == 0);
- error = dsl_prop_set(name, propname, 1,
- strlen(strval) + 1, strval);
- if (error == 0)
- continue;
- else
- return (error);
+ zc = kmem_zalloc(sizeof (zfs_cmd_t),
+ KM_SLEEP | KM_NODEBUG);
+ (void) strcpy(zc->zc_name, dsname);
+ (void) zfs_ioc_userspace_upgrade(zc);
+ kmem_free(zc, sizeof (zfs_cmd_t));
}
+ break;
+ }
+ case ZFS_PROP_COMPRESSION:
+ {
+ if (intval == ZIO_COMPRESS_LZ4) {
+ zfeature_info_t *feature =
+ &spa_feature_table[SPA_FEATURE_LZ4_COMPRESS];
+ spa_t *spa;
- switch (prop) {
- case ZFS_PROP_QUOTA:
- if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
- (error = dsl_dir_set_quota(name, intval)) != 0)
- return (error);
- break;
+ if ((err = spa_open(dsname, &spa, FTAG)) != 0)
+ return (err);
- case ZFS_PROP_REFQUOTA:
- if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
- (error = dsl_dataset_set_quota(name, intval)) != 0)
- return (error);
- break;
+ /*
+ * Setting the LZ4 compression algorithm activates
+ * the feature.
+ */
+ if (!spa_feature_is_active(spa, feature)) {
+ if ((err = zfs_prop_activate_feature(spa,
+ feature)) != 0) {
+ spa_close(spa, FTAG);
+ return (err);
+ }
+ }
- case ZFS_PROP_RESERVATION:
- if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
- (error = dsl_dir_set_reservation(name,
- intval)) != 0)
- return (error);
- break;
+ spa_close(spa, FTAG);
+ }
+ /*
+ * We still want the default set action to be performed in the
+ * caller, we only performed zfeature settings here.
+ */
+ err = -1;
+ break;
+ }
- case ZFS_PROP_REFRESERVATION:
- if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
- (error = dsl_dataset_set_reservation(name,
- intval)) != 0)
- return (error);
- break;
+ default:
+ err = -1;
+ }
- case ZFS_PROP_VOLSIZE:
- if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
- (error = zvol_set_volsize(name,
- ddi_driver_major(zfs_dip), intval)) != 0)
- return (error);
- break;
+ return (err);
+}
- case ZFS_PROP_VOLBLOCKSIZE:
- if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
- (error = zvol_set_volblocksize(name, intval)) != 0)
- return (error);
- break;
+/*
+ * This function is best effort. If it fails to set any of the given properties,
+ * it continues to set as many as it can and returns the last error
+ * encountered. If the caller provides a non-NULL errlist, it will be filled in
+ * with the list of names of all the properties that failed along with the
+ * corresponding error numbers.
+ *
+ * If every property is set successfully, zero is returned and errlist is not
+ * modified.
+ */
+int
+zfs_set_prop_nvlist(const char *dsname, zprop_source_t source, nvlist_t *nvl,
+ nvlist_t *errlist)
+{
+ nvpair_t *pair;
+ nvpair_t *propval;
+ int rv = 0;
+ uint64_t intval;
+ char *strval;
- case ZFS_PROP_VERSION:
- if ((error = nvpair_value_uint64(elem, &intval)) != 0 ||
- (error = zfs_set_version(name, intval)) != 0)
- return (error);
- break;
+ nvlist_t *genericnvl = fnvlist_alloc();
+ nvlist_t *retrynvl = fnvlist_alloc();
+retry:
+ pair = NULL;
+ while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) {
+ const char *propname = nvpair_name(pair);
+ zfs_prop_t prop = zfs_name_to_prop(propname);
+ int err = 0;
+
+ /* decode the property value */
+ propval = pair;
+ if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
+ nvlist_t *attrs;
+ attrs = fnvpair_value_nvlist(pair);
+ if (nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
+ &propval) != 0)
+ err = SET_ERROR(EINVAL);
+ }
- default:
- if (nvpair_type(elem) == DATA_TYPE_STRING) {
- if (zfs_prop_get_type(prop) !=
- PROP_TYPE_STRING)
- return (EINVAL);
- VERIFY(nvpair_value_string(elem, &strval) == 0);
- if ((error = dsl_prop_set(name,
- nvpair_name(elem), 1, strlen(strval) + 1,
- strval)) != 0)
- return (error);
- } else if (nvpair_type(elem) == DATA_TYPE_UINT64) {
+ /* Validate value type */
+ if (err == 0 && prop == ZPROP_INVAL) {
+ if (zfs_prop_user(propname)) {
+ if (nvpair_type(propval) != DATA_TYPE_STRING)
+ err = SET_ERROR(EINVAL);
+ } else if (zfs_prop_userquota(propname)) {
+ if (nvpair_type(propval) !=
+ DATA_TYPE_UINT64_ARRAY)
+ err = SET_ERROR(EINVAL);
+ } else {
+ err = SET_ERROR(EINVAL);
+ }
+ } else if (err == 0) {
+ if (nvpair_type(propval) == DATA_TYPE_STRING) {
+ if (zfs_prop_get_type(prop) != PROP_TYPE_STRING)
+ err = SET_ERROR(EINVAL);
+ } else if (nvpair_type(propval) == DATA_TYPE_UINT64) {
const char *unused;
- VERIFY(nvpair_value_uint64(elem, &intval) == 0);
+ intval = fnvpair_value_uint64(propval);
switch (zfs_prop_get_type(prop)) {
case PROP_TYPE_NUMBER:
break;
case PROP_TYPE_STRING:
- return (EINVAL);
+ err = SET_ERROR(EINVAL);
+ break;
case PROP_TYPE_INDEX:
if (zfs_prop_index_to_string(prop,
intval, &unused) != 0)
- return (EINVAL);
+ err = SET_ERROR(EINVAL);
break;
default:
cmn_err(CE_PANIC,
"unknown property type");
- break;
}
+ } else {
+ err = SET_ERROR(EINVAL);
+ }
+ }
+
+ /* Validate permissions */
+ if (err == 0)
+ err = zfs_check_settable(dsname, pair, CRED());
+
+ if (err == 0) {
+ err = zfs_prop_set_special(dsname, source, pair);
+ if (err == -1) {
+ /*
+ * For better performance we build up a list of
+ * properties to set in a single transaction.
+ */
+ err = nvlist_add_nvpair(genericnvl, pair);
+ } else if (err != 0 && nvl != retrynvl) {
+ /*
+ * This may be a spurious error caused by
+ * receiving quota and reservation out of order.
+ * Try again in a second pass.
+ */
+ err = nvlist_add_nvpair(retrynvl, pair);
+ }
+ }
+
+ if (err != 0) {
+ if (errlist != NULL)
+ fnvlist_add_int32(errlist, propname, err);
+ rv = err;
+ }
+ }
+
+ if (nvl != retrynvl && !nvlist_empty(retrynvl)) {
+ nvl = retrynvl;
+ goto retry;
+ }
- if ((error = dsl_prop_set(name, propname,
- 8, 1, &intval)) != 0)
- return (error);
+ if (!nvlist_empty(genericnvl) &&
+ dsl_props_set(dsname, source, genericnvl) != 0) {
+ /*
+ * If this fails, we still want to set as many properties as we
+ * can, so try setting them individually.
+ */
+ pair = NULL;
+ while ((pair = nvlist_next_nvpair(genericnvl, pair)) != NULL) {
+ const char *propname = nvpair_name(pair);
+ int err = 0;
+
+ propval = pair;
+ if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
+ nvlist_t *attrs;
+ attrs = fnvpair_value_nvlist(pair);
+ propval = fnvlist_lookup_nvpair(attrs,
+ ZPROP_VALUE);
+ }
+
+ if (nvpair_type(propval) == DATA_TYPE_STRING) {
+ strval = fnvpair_value_string(propval);
+ err = dsl_prop_set_string(dsname, propname,
+ source, strval);
} else {
- return (EINVAL);
+ intval = fnvpair_value_uint64(propval);
+ err = dsl_prop_set_int(dsname, propname, source,
+ intval);
+ }
+
+ if (err != 0) {
+ if (errlist != NULL) {
+ fnvlist_add_int32(errlist, propname,
+ err);
+ }
+ rv = err;
}
- break;
}
}
+ nvlist_free(genericnvl);
+ nvlist_free(retrynvl);
+ return (rv);
+}
+
+/*
+ * Check that all the properties are valid user properties.
+ */
+static int
+zfs_check_userprops(const char *fsname, nvlist_t *nvl)
+{
+ nvpair_t *pair = NULL;
+ int error = 0;
+
+ while ((pair = nvlist_next_nvpair(nvl, pair)) != NULL) {
+ const char *propname = nvpair_name(pair);
+ char *valstr;
+
+ if (!zfs_prop_user(propname) ||
+ nvpair_type(pair) != DATA_TYPE_STRING)
+ return (SET_ERROR(EINVAL));
+
+ if ((error = zfs_secpolicy_write_perms(fsname,
+ ZFS_DELEG_PERM_USERPROP, CRED())))
+ return (error);
+
+ if (strlen(propname) >= ZAP_MAXNAMELEN)
+ return (SET_ERROR(ENAMETOOLONG));
+
+ VERIFY(nvpair_value_string(pair, &valstr) == 0);
+ if (strlen(valstr) >= ZAP_MAXVALUELEN)
+ return (SET_ERROR(E2BIG));
+ }
return (0);
}
+static void
+props_skip(nvlist_t *props, nvlist_t *skipped, nvlist_t **newprops)
+{
+ nvpair_t *pair;
+
+ VERIFY(nvlist_alloc(newprops, NV_UNIQUE_NAME, KM_SLEEP) == 0);
+
+ pair = NULL;
+ while ((pair = nvlist_next_nvpair(props, pair)) != NULL) {
+ if (nvlist_exists(skipped, nvpair_name(pair)))
+ continue;
+
+ VERIFY(nvlist_add_nvpair(*newprops, pair) == 0);
+ }
+}
+
+static int
+clear_received_props(const char *dsname, nvlist_t *props,
+ nvlist_t *skipped)
+{
+ int err = 0;
+ nvlist_t *cleared_props = NULL;
+ props_skip(props, skipped, &cleared_props);
+ if (!nvlist_empty(cleared_props)) {
+ /*
+ * Acts on local properties until the dataset has received
+ * properties at least once on or after SPA_VERSION_RECVD_PROPS.
+ */
+ zprop_source_t flags = (ZPROP_SRC_NONE |
+ (dsl_prop_get_hasrecvd(dsname) ? ZPROP_SRC_RECEIVED : 0));
+ err = zfs_set_prop_nvlist(dsname, flags, cleared_props, NULL);
+ }
+ nvlist_free(cleared_props);
+ return (err);
+}
+
/*
* inputs:
* zc_name name of filesystem
- * zc_value name of property to inherit
+ * zc_value name of property to set
* zc_nvlist_src{_size} nvlist of properties to apply
- * zc_cookie clear existing local props?
+ * zc_cookie received properties flag
*
- * outputs: none
+ * outputs:
+ * zc_nvlist_dst{_size} error for each unapplied received property
*/
static int
zfs_ioc_set_prop(zfs_cmd_t *zc)
{
nvlist_t *nvl;
+ boolean_t received = zc->zc_cookie;
+ zprop_source_t source = (received ? ZPROP_SRC_RECEIVED :
+ ZPROP_SRC_LOCAL);
+ nvlist_t *errors;
int error;
if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
- &nvl)) != 0)
+ zc->zc_iflags, &nvl)) != 0)
return (error);
- if (zc->zc_cookie) {
+ if (received) {
nvlist_t *origprops;
- objset_t *os;
- if (dmu_objset_open(zc->zc_name, DMU_OST_ANY,
- DS_MODE_USER | DS_MODE_READONLY, &os) == 0) {
- if (dsl_prop_get_all(os, &origprops, TRUE) == 0) {
- clear_props(zc->zc_name, origprops, nvl);
- nvlist_free(origprops);
- }
- dmu_objset_close(os);
+ if (dsl_prop_get_received(zc->zc_name, &origprops) == 0) {
+ (void) clear_received_props(zc->zc_name,
+ origprops, nvl);
+ nvlist_free(origprops);
}
+ error = dsl_prop_set_hasrecvd(zc->zc_name);
}
- error = zfs_set_prop_nvlist(zc->zc_name, nvl);
+ errors = fnvlist_alloc();
+ if (error == 0)
+ error = zfs_set_prop_nvlist(zc->zc_name, source, nvl, errors);
+
+ if (zc->zc_nvlist_dst != 0 && errors != NULL) {
+ (void) put_nvlist(zc, errors);
+ }
+ nvlist_free(errors);
nvlist_free(nvl);
return (error);
}
* inputs:
* zc_name name of filesystem
* zc_value name of property to inherit
+ * zc_cookie revert to received value if TRUE
*
* outputs: none
*/
static int
zfs_ioc_inherit_prop(zfs_cmd_t *zc)
{
- /* the property name has been validated by zfs_secpolicy_inherit() */
- return (dsl_prop_set(zc->zc_name, zc->zc_value, 0, 0, NULL));
+ const char *propname = zc->zc_value;
+ zfs_prop_t prop = zfs_name_to_prop(propname);
+ boolean_t received = zc->zc_cookie;
+ zprop_source_t source = (received
+ ? ZPROP_SRC_NONE /* revert to received value, if any */
+ : ZPROP_SRC_INHERITED); /* explicitly inherit */
+
+ if (received) {
+ nvlist_t *dummy;
+ nvpair_t *pair;
+ zprop_type_t type;
+ int err;
+
+ /*
+ * zfs_prop_set_special() expects properties in the form of an
+ * nvpair with type info.
+ */
+ if (prop == ZPROP_INVAL) {
+ if (!zfs_prop_user(propname))
+ return (SET_ERROR(EINVAL));
+
+ type = PROP_TYPE_STRING;
+ } else if (prop == ZFS_PROP_VOLSIZE ||
+ prop == ZFS_PROP_VERSION) {
+ return (SET_ERROR(EINVAL));
+ } else {
+ type = zfs_prop_get_type(prop);
+ }
+
+ VERIFY(nvlist_alloc(&dummy, NV_UNIQUE_NAME, KM_SLEEP) == 0);
+
+ switch (type) {
+ case PROP_TYPE_STRING:
+ VERIFY(0 == nvlist_add_string(dummy, propname, ""));
+ break;
+ case PROP_TYPE_NUMBER:
+ case PROP_TYPE_INDEX:
+ VERIFY(0 == nvlist_add_uint64(dummy, propname, 0));
+ break;
+ default:
+ nvlist_free(dummy);
+ return (SET_ERROR(EINVAL));
+ }
+
+ pair = nvlist_next_nvpair(dummy, NULL);
+ err = zfs_prop_set_special(zc->zc_name, source, pair);
+ nvlist_free(dummy);
+ if (err != -1)
+ return (err); /* special property already handled */
+ } else {
+ /*
+ * Only check this in the non-received case. We want to allow
+ * 'inherit -S' to revert non-inheritable properties like quota
+ * and reservation to the received or default values even though
+ * they are not considered inheritable.
+ */
+ if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop))
+ return (SET_ERROR(EINVAL));
+ }
+
+ /* property name has been validated by zfs_secpolicy_inherit_prop() */
+ return (dsl_prop_inherit(zc->zc_name, zc->zc_value, source));
}
static int
nvlist_t *props;
spa_t *spa;
int error;
- nvpair_t *elem;
+ nvpair_t *pair;
if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
- &props)))
+ zc->zc_iflags, &props)))
return (error);
/*
* If the only property is the configfile, then just do a spa_lookup()
* to handle the faulted case.
*/
- elem = nvlist_next_nvpair(props, NULL);
- if (elem != NULL && strcmp(nvpair_name(elem),
+ pair = nvlist_next_nvpair(props, NULL);
+ if (pair != NULL && strcmp(nvpair_name(pair),
zpool_prop_to_name(ZPOOL_PROP_CACHEFILE)) == 0 &&
- nvlist_next_nvpair(props, elem) == NULL) {
+ nvlist_next_nvpair(props, pair) == NULL) {
mutex_enter(&spa_namespace_lock);
if ((spa = spa_lookup(zc->zc_name)) != NULL) {
spa_configfile_set(spa, props, B_FALSE);
spa_config_sync(spa, B_FALSE, B_TRUE);
}
mutex_exit(&spa_namespace_lock);
- if (spa != NULL)
+ if (spa != NULL) {
+ nvlist_free(props);
return (0);
+ }
}
if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0) {
spa_close(spa, FTAG);
}
- if (error == 0 && zc->zc_nvlist_dst != NULL)
+ if (error == 0 && zc->zc_nvlist_dst != 0)
error = put_nvlist(zc, nvp);
else
- error = EFAULT;
+ error = SET_ERROR(EFAULT);
nvlist_free(nvp);
return (error);
}
-static int
-zfs_ioc_iscsi_perm_check(zfs_cmd_t *zc)
-{
- nvlist_t *nvp;
- int error;
- uint32_t uid;
- uint32_t gid;
- uint32_t *groups;
- uint_t group_cnt;
- cred_t *usercred;
-
- if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
- &nvp)) != 0) {
- return (error);
- }
-
- if ((error = nvlist_lookup_uint32(nvp,
- ZFS_DELEG_PERM_UID, &uid)) != 0) {
- nvlist_free(nvp);
- return (EPERM);
- }
-
- if ((error = nvlist_lookup_uint32(nvp,
- ZFS_DELEG_PERM_GID, &gid)) != 0) {
- nvlist_free(nvp);
- return (EPERM);
- }
-
- if ((error = nvlist_lookup_uint32_array(nvp, ZFS_DELEG_PERM_GROUPS,
- &groups, &group_cnt)) != 0) {
- nvlist_free(nvp);
- return (EPERM);
- }
- usercred = cralloc();
- if ((crsetugid(usercred, uid, gid) != 0) ||
- (crsetgroups(usercred, group_cnt, (gid_t *)groups) != 0)) {
- nvlist_free(nvp);
- crfree(usercred);
- return (EPERM);
- }
- nvlist_free(nvp);
- error = dsl_deleg_access(zc->zc_name,
- zfs_prop_to_name(ZFS_PROP_SHAREISCSI), usercred);
- crfree(usercred);
- return (error);
-}
-
/*
* inputs:
* zc_name name of filesystem
nvlist_t *fsaclnv = NULL;
if ((error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
- &fsaclnv)) != 0)
+ zc->zc_iflags, &fsaclnv)) != 0)
return (error);
/*
*/
if ((error = zfs_deleg_verify_nvlist(fsaclnv)) != 0) {
nvlist_free(fsaclnv);
- return (EINVAL);
+ return (SET_ERROR(EINVAL));
}
/*
*/
error = secpolicy_zfs(CRED());
- if (error) {
+ if (error != 0) {
if (zc->zc_perm_action == B_FALSE) {
error = dsl_deleg_can_allow(zc->zc_name,
fsaclnv, CRED());
return (error);
}
-/*
- * inputs:
- * zc_name name of volume
- *
- * outputs: none
- */
-static int
-zfs_ioc_create_minor(zfs_cmd_t *zc)
-{
- return (zvol_create_minor(zc->zc_name, ddi_driver_major(zfs_dip)));
-}
-
-/*
- * inputs:
- * zc_name name of volume
- *
- * outputs: none
- */
-static int
-zfs_ioc_remove_minor(zfs_cmd_t *zc)
-{
- return (zvol_remove_minor(zc->zc_name));
-}
-
-/*
- * Search the vfs list for a specified resource. Returns a pointer to it
- * or NULL if no suitable entry is found. The caller of this routine
- * is responsible for releasing the returned vfs pointer.
- */
-static vfs_t *
-zfs_get_vfs(const char *resource)
-{
- struct vfs *vfsp;
- struct vfs *vfs_found = NULL;
-
- vfs_list_read_lock();
- vfsp = rootvfs;
- do {
- if (strcmp(refstr_value(vfsp->vfs_resource), resource) == 0) {
- VFS_HOLD(vfsp);
- vfs_found = vfsp;
- break;
- }
- vfsp = vfsp->vfs_next;
- } while (vfsp != rootvfs);
- vfs_list_unlock();
- return (vfs_found);
-}
-
/* ARGSUSED */
static void
zfs_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
/*
* inputs:
- * createprops list of properties requested by creator
- * default_zplver zpl version to use if unspecified in createprops
- * fuids_ok fuids allowed in this version of the spa?
* os parent objset pointer (NULL if root fs)
+ * fuids_ok fuids allowed in this version of the spa?
+ * sa_ok SAs allowed in this version of the spa?
+ * createprops list of properties requested by creator
*
* outputs:
* zplprops values for the zplprops we attach to the master node object
* processing.
*/
static int
-zfs_fill_zplprops_impl(objset_t *os, uint64_t default_zplver,
- boolean_t fuids_ok, nvlist_t *createprops, nvlist_t *zplprops,
- boolean_t *is_ci)
+zfs_fill_zplprops_impl(objset_t *os, uint64_t zplver,
+ boolean_t fuids_ok, boolean_t sa_ok, nvlist_t *createprops,
+ nvlist_t *zplprops, boolean_t *is_ci)
{
- uint64_t zplver = default_zplver;
uint64_t sense = ZFS_PROP_UNDEFINED;
uint64_t norm = ZFS_PROP_UNDEFINED;
uint64_t u8 = ZFS_PROP_UNDEFINED;
+ int error;
ASSERT(zplprops != NULL);
*/
if ((zplver < ZPL_VERSION_INITIAL || zplver > ZPL_VERSION) ||
(zplver >= ZPL_VERSION_FUID && !fuids_ok) ||
+ (zplver >= ZPL_VERSION_SA && !sa_ok) ||
(zplver < ZPL_VERSION_NORMALIZATION &&
(norm != ZFS_PROP_UNDEFINED || u8 != ZFS_PROP_UNDEFINED ||
sense != ZFS_PROP_UNDEFINED)))
- return (ENOTSUP);
+ return (SET_ERROR(ENOTSUP));
/*
* Put the version in the zplprops
VERIFY(nvlist_add_uint64(zplprops,
zfs_prop_to_name(ZFS_PROP_VERSION), zplver) == 0);
- if (norm == ZFS_PROP_UNDEFINED)
- VERIFY(zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm) == 0);
+ if (norm == ZFS_PROP_UNDEFINED &&
+ (error = zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &norm)) != 0)
+ return (error);
VERIFY(nvlist_add_uint64(zplprops,
zfs_prop_to_name(ZFS_PROP_NORMALIZE), norm) == 0);
*/
if (norm)
u8 = 1;
- if (u8 == ZFS_PROP_UNDEFINED)
- VERIFY(zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8) == 0);
+ if (u8 == ZFS_PROP_UNDEFINED &&
+ (error = zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &u8)) != 0)
+ return (error);
VERIFY(nvlist_add_uint64(zplprops,
zfs_prop_to_name(ZFS_PROP_UTF8ONLY), u8) == 0);
- if (sense == ZFS_PROP_UNDEFINED)
- VERIFY(zfs_get_zplprop(os, ZFS_PROP_CASE, &sense) == 0);
+ if (sense == ZFS_PROP_UNDEFINED &&
+ (error = zfs_get_zplprop(os, ZFS_PROP_CASE, &sense)) != 0)
+ return (error);
VERIFY(nvlist_add_uint64(zplprops,
zfs_prop_to_name(ZFS_PROP_CASE), sense) == 0);
zfs_fill_zplprops(const char *dataset, nvlist_t *createprops,
nvlist_t *zplprops, boolean_t *is_ci)
{
- boolean_t fuids_ok = B_TRUE;
+ boolean_t fuids_ok, sa_ok;
uint64_t zplver = ZPL_VERSION;
objset_t *os = NULL;
char parentname[MAXNAMELEN];
char *cp;
+ spa_t *spa;
+ uint64_t spa_vers;
int error;
(void) strlcpy(parentname, dataset, sizeof (parentname));
ASSERT(cp != NULL);
cp[0] = '\0';
- if (zfs_earlier_version(dataset, SPA_VERSION_FUID)) {
- zplver = ZPL_VERSION_FUID - 1;
- fuids_ok = B_FALSE;
- }
+ if ((error = spa_open(dataset, &spa, FTAG)) != 0)
+ return (error);
+
+ spa_vers = spa_version(spa);
+ spa_close(spa, FTAG);
+
+ zplver = zfs_zpl_version_map(spa_vers);
+ fuids_ok = (zplver >= ZPL_VERSION_FUID);
+ sa_ok = (zplver >= ZPL_VERSION_SA);
/*
* Open parent object set so we can inherit zplprop values.
*/
- if ((error = dmu_objset_open(parentname, DMU_OST_ANY,
- DS_MODE_USER | DS_MODE_READONLY, &os)) != 0)
+ if ((error = dmu_objset_hold(parentname, FTAG, &os)) != 0)
return (error);
- error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, createprops,
+ error = zfs_fill_zplprops_impl(os, zplver, fuids_ok, sa_ok, createprops,
zplprops, is_ci);
- dmu_objset_close(os);
+ dmu_objset_rele(os, FTAG);
return (error);
}
zfs_fill_zplprops_root(uint64_t spa_vers, nvlist_t *createprops,
nvlist_t *zplprops, boolean_t *is_ci)
{
- boolean_t fuids_ok = B_TRUE;
+ boolean_t fuids_ok;
+ boolean_t sa_ok;
uint64_t zplver = ZPL_VERSION;
int error;
- if (spa_vers < SPA_VERSION_FUID) {
- zplver = ZPL_VERSION_FUID - 1;
- fuids_ok = B_FALSE;
- }
+ zplver = zfs_zpl_version_map(spa_vers);
+ fuids_ok = (zplver >= ZPL_VERSION_FUID);
+ sa_ok = (zplver >= ZPL_VERSION_SA);
- error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, createprops,
- zplprops, is_ci);
+ error = zfs_fill_zplprops_impl(NULL, zplver, fuids_ok, sa_ok,
+ createprops, zplprops, is_ci);
return (error);
}
/*
- * inputs:
- * zc_objset_type type of objset to create (fs vs zvol)
- * zc_name name of new objset
- * zc_value name of snapshot to clone from (may be empty)
- * zc_nvlist_src{_size} nvlist of properties to apply
+ * innvl: {
+ * "type" -> dmu_objset_type_t (int32)
+ * (optional) "props" -> { prop -> value }
+ * }
*
- * outputs: none
+ * outnvl: propname -> error code (int32)
*/
static int
-zfs_ioc_create(zfs_cmd_t *zc)
+zfs_ioc_create(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl)
{
- objset_t *clone;
int error = 0;
- zfs_creat_t zct;
+ zfs_creat_t zct = { 0 };
nvlist_t *nvprops = NULL;
void (*cbfunc)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx);
- dmu_objset_type_t type = zc->zc_objset_type;
+ int32_t type32;
+ dmu_objset_type_t type;
+ boolean_t is_insensitive = B_FALSE;
- switch (type) {
+ if (nvlist_lookup_int32(innvl, "type", &type32) != 0)
+ return (SET_ERROR(EINVAL));
+ type = type32;
+ (void) nvlist_lookup_nvlist(innvl, "props", &nvprops);
+ switch (type) {
case DMU_OST_ZFS:
cbfunc = zfs_create_cb;
break;
cbfunc = NULL;
break;
}
- if (strchr(zc->zc_name, '@') ||
- strchr(zc->zc_name, '%'))
- return (EINVAL);
+ if (strchr(fsname, '@') ||
+ strchr(fsname, '%'))
+ return (SET_ERROR(EINVAL));
- if (zc->zc_nvlist_src != NULL &&
- (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
- &nvprops)) != 0)
- return (error);
-
- zct.zct_zplprops = NULL;
zct.zct_props = nvprops;
- if (zc->zc_value[0] != '\0') {
- /*
- * We're creating a clone of an existing snapshot.
- */
- zc->zc_value[sizeof (zc->zc_value) - 1] = '\0';
- if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0) {
- nvlist_free(nvprops);
- return (EINVAL);
- }
+ if (cbfunc == NULL)
+ return (SET_ERROR(EINVAL));
+
+ if (type == DMU_OST_ZVOL) {
+ uint64_t volsize, volblocksize;
+
+ if (nvprops == NULL)
+ return (SET_ERROR(EINVAL));
+ if (nvlist_lookup_uint64(nvprops,
+ zfs_prop_to_name(ZFS_PROP_VOLSIZE), &volsize) != 0)
+ return (SET_ERROR(EINVAL));
- error = dmu_objset_open(zc->zc_value, type,
- DS_MODE_USER | DS_MODE_READONLY, &clone);
- if (error) {
- nvlist_free(nvprops);
+ if ((error = nvlist_lookup_uint64(nvprops,
+ zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
+ &volblocksize)) != 0 && error != ENOENT)
+ return (SET_ERROR(EINVAL));
+
+ if (error != 0)
+ volblocksize = zfs_prop_default_numeric(
+ ZFS_PROP_VOLBLOCKSIZE);
+
+ if ((error = zvol_check_volblocksize(
+ volblocksize)) != 0 ||
+ (error = zvol_check_volsize(volsize,
+ volblocksize)) != 0)
return (error);
- }
+ } else if (type == DMU_OST_ZFS) {
+ int error;
- error = dmu_objset_create(zc->zc_name, type, clone, 0,
- NULL, NULL);
- if (error) {
- dmu_objset_close(clone);
- nvlist_free(nvprops);
+ /*
+ * We have to have normalization and
+ * case-folding flags correct when we do the
+ * file system creation, so go figure them out
+ * now.
+ */
+ VERIFY(nvlist_alloc(&zct.zct_zplprops,
+ NV_UNIQUE_NAME, KM_SLEEP) == 0);
+ error = zfs_fill_zplprops(fsname, nvprops,
+ zct.zct_zplprops, &is_insensitive);
+ if (error != 0) {
+ nvlist_free(zct.zct_zplprops);
return (error);
}
- dmu_objset_close(clone);
- } else {
- boolean_t is_insensitive = B_FALSE;
+ }
- if (cbfunc == NULL) {
- nvlist_free(nvprops);
- return (EINVAL);
- }
+ error = dmu_objset_create(fsname, type,
+ is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct);
+ nvlist_free(zct.zct_zplprops);
+
+ /*
+ * It would be nice to do this atomically.
+ */
+ if (error == 0) {
+ error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL,
+ nvprops, outnvl);
+ if (error != 0)
+ (void) dsl_destroy_head(fsname);
+ }
- if (type == DMU_OST_ZVOL) {
- uint64_t volsize, volblocksize;
+#ifdef _KERNEL
+ if (error == 0 && type == DMU_OST_ZVOL)
+ zvol_create_minors(fsname);
+#endif
- if (nvprops == NULL ||
- nvlist_lookup_uint64(nvprops,
- zfs_prop_to_name(ZFS_PROP_VOLSIZE),
- &volsize) != 0) {
- nvlist_free(nvprops);
- return (EINVAL);
- }
+ return (error);
+}
- if ((error = nvlist_lookup_uint64(nvprops,
- zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE),
- &volblocksize)) != 0 && error != ENOENT) {
- nvlist_free(nvprops);
- return (EINVAL);
- }
+/*
+ * innvl: {
+ * "origin" -> name of origin snapshot
+ * (optional) "props" -> { prop -> value }
+ * }
+ *
+ * outputs:
+ * outnvl: propname -> error code (int32)
+ */
+static int
+zfs_ioc_clone(const char *fsname, nvlist_t *innvl, nvlist_t *outnvl)
+{
+ int error = 0;
+ nvlist_t *nvprops = NULL;
+ char *origin_name;
- if (error != 0)
- volblocksize = zfs_prop_default_numeric(
- ZFS_PROP_VOLBLOCKSIZE);
+ if (nvlist_lookup_string(innvl, "origin", &origin_name) != 0)
+ return (SET_ERROR(EINVAL));
+ (void) nvlist_lookup_nvlist(innvl, "props", &nvprops);
- if ((error = zvol_check_volblocksize(
- volblocksize)) != 0 ||
- (error = zvol_check_volsize(volsize,
- volblocksize)) != 0) {
- nvlist_free(nvprops);
- return (error);
- }
- } else if (type == DMU_OST_ZFS) {
- int error;
+ if (strchr(fsname, '@') ||
+ strchr(fsname, '%'))
+ return (SET_ERROR(EINVAL));
- /*
- * We have to have normalization and
- * case-folding flags correct when we do the
- * file system creation, so go figure them out
- * now.
- */
- VERIFY(nvlist_alloc(&zct.zct_zplprops,
- NV_UNIQUE_NAME, KM_SLEEP) == 0);
- error = zfs_fill_zplprops(zc->zc_name, nvprops,
- zct.zct_zplprops, &is_insensitive);
- if (error != 0) {
- nvlist_free(nvprops);
- nvlist_free(zct.zct_zplprops);
- return (error);
- }
- }
- error = dmu_objset_create(zc->zc_name, type, NULL,
- is_insensitive ? DS_FLAG_CI_DATASET : 0, cbfunc, &zct);
- nvlist_free(zct.zct_zplprops);
- }
+ if (dataset_namecheck(origin_name, NULL, NULL) != 0)
+ return (SET_ERROR(EINVAL));
+ error = dmu_objset_clone(fsname, origin_name);
+ if (error != 0)
+ return (error);
/*
* It would be nice to do this atomically.
*/
if (error == 0) {
- if ((error = zfs_set_prop_nvlist(zc->zc_name, nvprops)) != 0)
- (void) dmu_objset_destroy(zc->zc_name);
+ error = zfs_set_prop_nvlist(fsname, ZPROP_SRC_LOCAL,
+ nvprops, outnvl);
+ if (error != 0)
+ (void) dsl_destroy_head(fsname);
}
- nvlist_free(nvprops);
+
+#ifdef _KERNEL
+ if (error == 0)
+ zvol_create_minors(fsname);
+#endif
+
return (error);
}
-struct snap_prop_arg {
- nvlist_t *nvprops;
- const char *snapname;
-};
-
+/*
+ * innvl: {
+ * "snaps" -> { snapshot1, snapshot2 }
+ * (optional) "props" -> { prop -> value (string) }
+ * }
+ *
+ * outnvl: snapshot -> error code (int32)
+ */
static int
-set_snap_props(char *name, void *arg)
+zfs_ioc_snapshot(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl)
{
- struct snap_prop_arg *snpa = arg;
- int len = strlen(name) + strlen(snpa->snapname) + 2;
- char *buf = kmem_alloc(len, KM_SLEEP);
- int err;
+ nvlist_t *snaps;
+ nvlist_t *props = NULL;
+ int error, poollen;
+ nvpair_t *pair, *pair2;
- (void) snprintf(buf, len, "%s@%s", name, snpa->snapname);
- err = zfs_set_prop_nvlist(buf, snpa->nvprops);
- if (err)
- (void) dmu_objset_destroy(buf);
- kmem_free(buf, len);
- return (err);
+ (void) nvlist_lookup_nvlist(innvl, "props", &props);
+ if ((error = zfs_check_userprops(poolname, props)) != 0)
+ return (error);
+
+ if (!nvlist_empty(props) &&
+ zfs_earlier_version(poolname, SPA_VERSION_SNAP_PROPS))
+ return (SET_ERROR(ENOTSUP));
+
+ if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
+ return (SET_ERROR(EINVAL));
+ poollen = strlen(poolname);
+ for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
+ pair = nvlist_next_nvpair(snaps, pair)) {
+ const char *name = nvpair_name(pair);
+ const char *cp = strchr(name, '@');
+
+ /*
+ * The snap name must contain an @, and the part after it must
+ * contain only valid characters.
+ */
+ if (cp == NULL || snapshot_namecheck(cp + 1, NULL, NULL) != 0)
+ return (SET_ERROR(EINVAL));
+
+ /*
+ * The snap must be in the specified pool.
+ */
+ if (strncmp(name, poolname, poollen) != 0 ||
+ (name[poollen] != '/' && name[poollen] != '@'))
+ return (SET_ERROR(EXDEV));
+
+ /* This must be the only snap of this fs. */
+ for (pair2 = nvlist_next_nvpair(snaps, pair);
+ pair2 != NULL; pair2 = nvlist_next_nvpair(snaps, pair2)) {
+ if (strncmp(name, nvpair_name(pair2), cp - name + 1)
+ == 0) {
+ return (SET_ERROR(EXDEV));
+ }
+ }
+ }
+
+ error = dsl_dataset_snapshot(snaps, props, outnvl);
+
+#ifdef _KERNEL
+ if (error == 0)
+ zvol_create_minors(poolname);
+#endif
+
+ return (error);
}
/*
- * inputs:
- * zc_name name of filesystem
- * zc_value short name of snapshot
- * zc_cookie recursive flag
- *
- * outputs: none
+ * innvl: "message" -> string
*/
+/* ARGSUSED */
static int
-zfs_ioc_snapshot(zfs_cmd_t *zc)
+zfs_ioc_log_history(const char *unused, nvlist_t *innvl, nvlist_t *outnvl)
{
- nvlist_t *nvprops = NULL;
+ char *message;
+ spa_t *spa;
int error;
- boolean_t recursive = zc->zc_cookie;
+ char *poolname;
- if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
- return (EINVAL);
-
- if (zc->zc_nvlist_src != NULL &&
- (error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
- &nvprops)) != 0)
+ /*
+ * The poolname in the ioctl is not set, we get it from the TSD,
+ * which was set at the end of the last successful ioctl that allows
+ * logging. The secpolicy func already checked that it is set.
+ * Only one log ioctl is allowed after each successful ioctl, so
+ * we clear the TSD here.
+ */
+ poolname = tsd_get(zfs_allow_log_key);
+ (void) tsd_set(zfs_allow_log_key, NULL);
+ error = spa_open(poolname, &spa, FTAG);
+ strfree(poolname);
+ if (error != 0)
return (error);
- error = dmu_objset_snapshot(zc->zc_name, zc->zc_value, recursive);
+ if (nvlist_lookup_string(innvl, "message", &message) != 0) {
+ spa_close(spa, FTAG);
+ return (SET_ERROR(EINVAL));
+ }
- /*
- * It would be nice to do this atomically.
- */
- if (error == 0) {
- struct snap_prop_arg snpa;
- snpa.nvprops = nvprops;
- snpa.snapname = zc->zc_value;
- if (recursive) {
- error = dmu_objset_find(zc->zc_name,
- set_snap_props, &snpa, DS_FIND_CHILDREN);
- if (error) {
- (void) dmu_snapshots_destroy(zc->zc_name,
- zc->zc_value);
- }
- } else {
- error = set_snap_props(zc->zc_name, &snpa);
- }
+ if (spa_version(spa) < SPA_VERSION_ZPOOL_HISTORY) {
+ spa_close(spa, FTAG);
+ return (SET_ERROR(ENOTSUP));
}
- nvlist_free(nvprops);
+
+ error = spa_history_log(spa, message);
+ spa_close(spa, FTAG);
return (error);
}
+/*
+ * The dp_config_rwlock must not be held when calling this, because the
+ * unmount may need to write out data.
+ *
+ * This function is best-effort. Callers must deal gracefully if it
+ * remains mounted (or is remounted after this call).
+ *
+ * XXX: This function should detect a failure to unmount a snapdir of a dataset
+ * and return the appropriate error code when it is mounted. Its Illumos and
+ * FreeBSD counterparts do this. We do not do this on Linux because there is no
+ * clear way to access the mount information that FreeBSD and Illumos use to
+ * distinguish between things with mounted snapshot directories, and things
+ * without mounted snapshot directories, which include zvols. Returning a
+ * failure for the latter causes `zfs destroy` to fail on zvol snapshots.
+ */
int
-zfs_unmount_snap(char *name, void *arg)
+zfs_unmount_snap(const char *snapname)
{
- vfs_t *vfsp = NULL;
+ zfs_sb_t *zsb = NULL;
+ char *dsname;
+ char *fullname;
+ char *ptr;
+
+ if ((ptr = strchr(snapname, '@')) == NULL)
+ return (0);
- if (arg) {
- char *snapname = arg;
- int len = strlen(name) + strlen(snapname) + 2;
- char *buf = kmem_alloc(len, KM_SLEEP);
+ dsname = kmem_alloc(ptr - snapname + 1, KM_SLEEP);
+ strlcpy(dsname, snapname, ptr - snapname + 1);
+ fullname = strdup(snapname);
- (void) strcpy(buf, name);
- (void) strcat(buf, "@");
- (void) strcat(buf, snapname);
- vfsp = zfs_get_vfs(buf);
- kmem_free(buf, len);
- } else if (strchr(name, '@')) {
- vfsp = zfs_get_vfs(name);
+ if (zfs_sb_hold(dsname, FTAG, &zsb, B_FALSE) == 0) {
+ ASSERT(!dsl_pool_config_held(dmu_objset_pool(zsb->z_os)));
+ (void) zfsctl_unmount_snapshot(zsb, fullname, MNT_FORCE);
+ zfs_sb_rele(zsb, FTAG);
}
- if (vfsp) {
- /*
- * Always force the unmount for snapshots.
- */
- int flag = MS_FORCE;
- int err;
+ kmem_free(dsname, ptr - snapname + 1);
+ strfree(fullname);
- if ((err = vn_vfswlock(vfsp->vfs_vnodecovered)) != 0) {
- VFS_RELE(vfsp);
- return (err);
- }
- VFS_RELE(vfsp);
- if ((err = dounmount(vfsp, flag, kcred)) != 0)
- return (err);
- }
return (0);
}
+/* ARGSUSED */
+static int
+zfs_unmount_snap_cb(const char *snapname, void *arg)
+{
+ return (zfs_unmount_snap(snapname));
+}
+
/*
- * inputs:
- * zc_name name of filesystem
- * zc_value short name of snapshot
+ * When a clone is destroyed, its origin may also need to be destroyed,
+ * in which case it must be unmounted. This routine will do that unmount
+ * if necessary.
+ */
+void
+zfs_destroy_unmount_origin(const char *fsname)
+{
+ int error;
+ objset_t *os;
+ dsl_dataset_t *ds;
+
+ error = dmu_objset_hold(fsname, FTAG, &os);
+ if (error != 0)
+ return;
+ ds = dmu_objset_ds(os);
+ if (dsl_dir_is_clone(ds->ds_dir) && DS_IS_DEFER_DESTROY(ds->ds_prev)) {
+ char originname[MAXNAMELEN];
+ dsl_dataset_name(ds->ds_prev, originname);
+ dmu_objset_rele(os, FTAG);
+ (void) zfs_unmount_snap(originname);
+ } else {
+ dmu_objset_rele(os, FTAG);
+ }
+}
+
+/*
+ * innvl: {
+ * "snaps" -> { snapshot1, snapshot2 }
+ * (optional boolean) "defer"
+ * }
*
- * outputs: none
+ * outnvl: snapshot -> error code (int32)
*/
static int
-zfs_ioc_destroy_snaps(zfs_cmd_t *zc)
+zfs_ioc_destroy_snaps(const char *poolname, nvlist_t *innvl, nvlist_t *outnvl)
{
- int err;
+ int error, poollen;
+ nvlist_t *snaps;
+ nvpair_t *pair;
+ boolean_t defer;
- if (snapshot_namecheck(zc->zc_value, NULL, NULL) != 0)
- return (EINVAL);
- err = dmu_objset_find(zc->zc_name,
- zfs_unmount_snap, zc->zc_value, DS_FIND_CHILDREN);
- if (err)
- return (err);
- return (dmu_snapshots_destroy(zc->zc_name, zc->zc_value));
+ if (nvlist_lookup_nvlist(innvl, "snaps", &snaps) != 0)
+ return (SET_ERROR(EINVAL));
+ defer = nvlist_exists(innvl, "defer");
+
+ poollen = strlen(poolname);
+ for (pair = nvlist_next_nvpair(snaps, NULL); pair != NULL;
+ pair = nvlist_next_nvpair(snaps, pair)) {
+ const char *name = nvpair_name(pair);
+
+ /*
+ * The snap must be in the specified pool.
+ */
+ if (strncmp(name, poolname, poollen) != 0 ||
+ (name[poollen] != '/' && name[poollen] != '@'))
+ return (SET_ERROR(EXDEV));
+
+ error = zfs_unmount_snap(name);
+ if (error != 0)
+ return (error);
+ (void) zvol_remove_minor(name);
+ }
+
+ return (dsl_destroy_snapshots_nvl(snaps, defer, outnvl));
}
/*
* inputs:
* zc_name name of dataset to destroy
* zc_objset_type type of objset
+ * zc_defer_destroy mark for deferred destroy
*
* outputs: none
*/
static int
zfs_ioc_destroy(zfs_cmd_t *zc)
{
- if (strchr(zc->zc_name, '@') && zc->zc_objset_type == DMU_OST_ZFS) {
- int err = zfs_unmount_snap(zc->zc_name, NULL);
- if (err)
+ int err;
+
+ if (zc->zc_objset_type == DMU_OST_ZFS) {
+ err = zfs_unmount_snap(zc->zc_name);
+ if (err != 0)
return (err);
}
- return (dmu_objset_destroy(zc->zc_name));
+ if (strchr(zc->zc_name, '@'))
+ err = dsl_destroy_snapshot(zc->zc_name, zc->zc_defer_destroy);
+ else
+ err = dsl_destroy_head(zc->zc_name);
+ if (zc->zc_objset_type == DMU_OST_ZVOL && err == 0)
+ (void) zvol_remove_minor(zc->zc_name);
+ return (err);
}
/*
- * inputs:
- * zc_name name of dataset to rollback (to most recent snapshot)
+ * fsname is name of dataset to rollback (to most recent snapshot)
*
- * outputs: none
+ * innvl is not used.
+ *
+ * outnvl: "target" -> name of most recent snapshot
+ * }
*/
+/* ARGSUSED */
static int
-zfs_ioc_rollback(zfs_cmd_t *zc)
+zfs_ioc_rollback(const char *fsname, nvlist_t *args, nvlist_t *outnvl)
{
- objset_t *os;
+ zfs_sb_t *zsb;
int error;
- zfsvfs_t *zfsvfs = NULL;
-
- /*
- * Get the zfsvfs for the receiving objset. There
- * won't be one if we're operating on a zvol, if the
- * objset doesn't exist yet, or is not mounted.
- */
- error = dmu_objset_open(zc->zc_name, DMU_OST_ANY, DS_MODE_USER, &os);
- if (error)
- return (error);
-
- if (dmu_objset_type(os) == DMU_OST_ZFS) {
- mutex_enter(&os->os->os_user_ptr_lock);
- zfsvfs = dmu_objset_get_user(os);
- if (zfsvfs != NULL)
- VFS_HOLD(zfsvfs->z_vfs);
- mutex_exit(&os->os->os_user_ptr_lock);
- }
-
- if (zfsvfs != NULL) {
- char *osname;
- int mode;
- osname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
- error = zfs_suspend_fs(zfsvfs, osname, &mode);
+ if (get_zfs_sb(fsname, &zsb) == 0) {
+ error = zfs_suspend_fs(zsb);
if (error == 0) {
int resume_err;
- ASSERT(strcmp(osname, zc->zc_name) == 0);
- error = dmu_objset_rollback(os);
- resume_err = zfs_resume_fs(zfsvfs, osname, mode);
+ error = dsl_dataset_rollback(fsname, zsb, outnvl);
+ resume_err = zfs_resume_fs(zsb, fsname);
error = error ? error : resume_err;
- } else {
- dmu_objset_close(os);
}
- kmem_free(osname, MAXNAMELEN);
- VFS_RELE(zfsvfs->z_vfs);
+ deactivate_super(zsb->z_sb);
} else {
- error = dmu_objset_rollback(os);
+ error = dsl_dataset_rollback(fsname, NULL, outnvl);
}
- /* Note, the dmu_objset_rollback() releases the objset for us. */
-
return (error);
}
+static int
+recursive_unmount(const char *fsname, void *arg)
+{
+ const char *snapname = arg;
+ char *fullname;
+
+ fullname = kmem_asprintf("%s@%s", fsname, snapname);
+ zfs_unmount_snap(fullname);
+ strfree(fullname);
+ return (zfs_unmount_snap(fullname));
+}
+
/*
* inputs:
* zc_name old name of dataset
zfs_ioc_rename(zfs_cmd_t *zc)
{
boolean_t recursive = zc->zc_cookie & 1;
+ char *at;
zc->zc_value[sizeof (zc->zc_value) - 1] = '\0';
if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
strchr(zc->zc_value, '%'))
- return (EINVAL);
+ return (SET_ERROR(EINVAL));
- /*
- * Unmount snapshot unless we're doing a recursive rename,
- * in which case the dataset code figures out which snapshots
- * to unmount.
- */
- if (!recursive && strchr(zc->zc_name, '@') != NULL &&
- zc->zc_objset_type == DMU_OST_ZFS) {
- int err = zfs_unmount_snap(zc->zc_name, NULL);
- if (err)
- return (err);
+ at = strchr(zc->zc_name, '@');
+ if (at != NULL) {
+ /* snaps must be in same fs */
+ int error;
+
+ if (strncmp(zc->zc_name, zc->zc_value, at - zc->zc_name + 1))
+ return (SET_ERROR(EXDEV));
+ *at = '\0';
+ if (zc->zc_objset_type == DMU_OST_ZFS) {
+ error = dmu_objset_find(zc->zc_name,
+ recursive_unmount, at + 1,
+ recursive ? DS_FIND_CHILDREN : 0);
+ if (error != 0) {
+ *at = '@';
+ return (error);
+ }
+ }
+ error = dsl_dataset_rename_snapshot(zc->zc_name,
+ at + 1, strchr(zc->zc_value, '@') + 1, recursive);
+ *at = '@';
+
+ return (error);
+ } else {
+ return (dsl_dir_rename(zc->zc_name, zc->zc_value));
}
- return (dmu_objset_rename(zc->zc_name, zc->zc_value, recursive));
}
-static void
-clear_props(char *dataset, nvlist_t *props, nvlist_t *newprops)
+static int
+zfs_check_settable(const char *dsname, nvpair_t *pair, cred_t *cr)
{
- zfs_cmd_t *zc;
- nvpair_t *prop;
+ const char *propname = nvpair_name(pair);
+ boolean_t issnap = (strchr(dsname, '@') != NULL);
+ zfs_prop_t prop = zfs_name_to_prop(propname);
+ uint64_t intval;
+ int err;
- if (props == NULL)
- return;
- zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP);
+ if (prop == ZPROP_INVAL) {
+ if (zfs_prop_user(propname)) {
+ if ((err = zfs_secpolicy_write_perms(dsname,
+ ZFS_DELEG_PERM_USERPROP, cr)))
+ return (err);
+ return (0);
+ }
+
+ if (!issnap && zfs_prop_userquota(propname)) {
+ const char *perm = NULL;
+ const char *uq_prefix =
+ zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA];
+ const char *gq_prefix =
+ zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA];
+
+ if (strncmp(propname, uq_prefix,
+ strlen(uq_prefix)) == 0) {
+ perm = ZFS_DELEG_PERM_USERQUOTA;
+ } else if (strncmp(propname, gq_prefix,
+ strlen(gq_prefix)) == 0) {
+ perm = ZFS_DELEG_PERM_GROUPQUOTA;
+ } else {
+ /* USERUSED and GROUPUSED are read-only */
+ return (SET_ERROR(EINVAL));
+ }
+
+ if ((err = zfs_secpolicy_write_perms(dsname, perm, cr)))
+ return (err);
+ return (0);
+ }
+
+ return (SET_ERROR(EINVAL));
+ }
+
+ if (issnap)
+ return (SET_ERROR(EINVAL));
+
+ if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
+ /*
+ * dsl_prop_get_all_impl() returns properties in this
+ * format.
+ */
+ nvlist_t *attrs;
+ VERIFY(nvpair_value_nvlist(pair, &attrs) == 0);
+ VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
+ &pair) == 0);
+ }
+
+ /*
+ * Check that this value is valid for this pool version
+ */
+ switch (prop) {
+ case ZFS_PROP_COMPRESSION:
+ /*
+ * If the user specified gzip compression, make sure
+ * the SPA supports it. We ignore any errors here since
+ * we'll catch them later.
+ */
+ if (nvpair_type(pair) == DATA_TYPE_UINT64 &&
+ nvpair_value_uint64(pair, &intval) == 0) {
+ if (intval >= ZIO_COMPRESS_GZIP_1 &&
+ intval <= ZIO_COMPRESS_GZIP_9 &&
+ zfs_earlier_version(dsname,
+ SPA_VERSION_GZIP_COMPRESSION)) {
+ return (SET_ERROR(ENOTSUP));
+ }
+
+ if (intval == ZIO_COMPRESS_ZLE &&
+ zfs_earlier_version(dsname,
+ SPA_VERSION_ZLE_COMPRESSION))
+ return (SET_ERROR(ENOTSUP));
+
+ if (intval == ZIO_COMPRESS_LZ4) {
+ zfeature_info_t *feature =
+ &spa_feature_table[
+ SPA_FEATURE_LZ4_COMPRESS];
+ spa_t *spa;
+
+ if ((err = spa_open(dsname, &spa, FTAG)) != 0)
+ return (err);
+
+ if (!spa_feature_is_enabled(spa, feature)) {
+ spa_close(spa, FTAG);
+ return (SET_ERROR(ENOTSUP));
+ }
+ spa_close(spa, FTAG);
+ }
+
+ /*
+ * If this is a bootable dataset then
+ * verify that the compression algorithm
+ * is supported for booting. We must return
+ * something other than ENOTSUP since it
+ * implies a downrev pool version.
+ */
+ if (zfs_is_bootfs(dsname) &&
+ !BOOTFS_COMPRESS_VALID(intval)) {
+ return (SET_ERROR(ERANGE));
+ }
+ }
+ break;
+
+ case ZFS_PROP_COPIES:
+ if (zfs_earlier_version(dsname, SPA_VERSION_DITTO_BLOCKS))
+ return (SET_ERROR(ENOTSUP));
+ break;
+
+ case ZFS_PROP_DEDUP:
+ if (zfs_earlier_version(dsname, SPA_VERSION_DEDUP))
+ return (SET_ERROR(ENOTSUP));
+ break;
+
+ case ZFS_PROP_SHARESMB:
+ if (zpl_earlier_version(dsname, ZPL_VERSION_FUID))
+ return (SET_ERROR(ENOTSUP));
+ break;
+
+ case ZFS_PROP_ACLINHERIT:
+ if (nvpair_type(pair) == DATA_TYPE_UINT64 &&
+ nvpair_value_uint64(pair, &intval) == 0) {
+ if (intval == ZFS_ACL_PASSTHROUGH_X &&
+ zfs_earlier_version(dsname,
+ SPA_VERSION_PASSTHROUGH_X))
+ return (SET_ERROR(ENOTSUP));
+ }
+ break;
+ default:
+ break;
+ }
+
+ return (zfs_secpolicy_setprop(dsname, prop, pair, CRED()));
+}
+
+/*
+ * Checks for a race condition to make sure we don't increment a feature flag
+ * multiple times.
+ */
+static int
+zfs_prop_activate_feature_check(void *arg, dmu_tx_t *tx)
+{
+ spa_t *spa = dmu_tx_pool(tx)->dp_spa;
+ zfeature_info_t *feature = arg;
+
+ if (!spa_feature_is_active(spa, feature))
+ return (0);
+ else
+ return (SET_ERROR(EBUSY));
+}
+
+/*
+ * The callback invoked on feature activation in the sync task caused by
+ * zfs_prop_activate_feature.
+ */
+static void
+zfs_prop_activate_feature_sync(void *arg, dmu_tx_t *tx)
+{
+ spa_t *spa = dmu_tx_pool(tx)->dp_spa;
+ zfeature_info_t *feature = arg;
+
+ spa_feature_incr(spa, feature, tx);
+}
+
+/*
+ * Activates a feature on a pool in response to a property setting. This
+ * creates a new sync task which modifies the pool to reflect the feature
+ * as being active.
+ */
+static int
+zfs_prop_activate_feature(spa_t *spa, zfeature_info_t *feature)
+{
+ int err;
+
+ /* EBUSY here indicates that the feature is already active */
+ err = dsl_sync_task(spa_name(spa),
+ zfs_prop_activate_feature_check, zfs_prop_activate_feature_sync,
+ feature, 2);
+
+ if (err != 0 && err != EBUSY)
+ return (err);
+ else
+ return (0);
+}
+
+/*
+ * Removes properties from the given props list that fail permission checks
+ * needed to clear them and to restore them in case of a receive error. For each
+ * property, make sure we have both set and inherit permissions.
+ *
+ * Returns the first error encountered if any permission checks fail. If the
+ * caller provides a non-NULL errlist, it also gives the complete list of names
+ * of all the properties that failed a permission check along with the
+ * corresponding error numbers. The caller is responsible for freeing the
+ * returned errlist.
+ *
+ * If every property checks out successfully, zero is returned and the list
+ * pointed at by errlist is NULL.
+ */
+static int
+zfs_check_clearable(char *dataset, nvlist_t *props, nvlist_t **errlist)
+{
+ zfs_cmd_t *zc;
+ nvpair_t *pair, *next_pair;
+ nvlist_t *errors;
+ int err, rv = 0;
+
+ if (props == NULL)
+ return (0);
+
+ VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0);
+
+ zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP | KM_NODEBUG);
(void) strcpy(zc->zc_name, dataset);
- for (prop = nvlist_next_nvpair(props, NULL); prop;
- prop = nvlist_next_nvpair(props, prop)) {
- if (newprops != NULL &&
- nvlist_exists(newprops, nvpair_name(prop)))
- continue;
- (void) strcpy(zc->zc_value, nvpair_name(prop));
- if (zfs_secpolicy_inherit(zc, CRED()) == 0)
- (void) zfs_ioc_inherit_prop(zc);
+ pair = nvlist_next_nvpair(props, NULL);
+ while (pair != NULL) {
+ next_pair = nvlist_next_nvpair(props, pair);
+
+ (void) strcpy(zc->zc_value, nvpair_name(pair));
+ if ((err = zfs_check_settable(dataset, pair, CRED())) != 0 ||
+ (err = zfs_secpolicy_inherit_prop(zc, NULL, CRED())) != 0) {
+ VERIFY(nvlist_remove_nvpair(props, pair) == 0);
+ VERIFY(nvlist_add_int32(errors,
+ zc->zc_value, err) == 0);
+ }
+ pair = next_pair;
}
kmem_free(zc, sizeof (zfs_cmd_t));
+
+ if ((pair = nvlist_next_nvpair(errors, NULL)) == NULL) {
+ nvlist_free(errors);
+ errors = NULL;
+ } else {
+ VERIFY(nvpair_value_int32(pair, &rv) == 0);
+ }
+
+ if (errlist == NULL)
+ nvlist_free(errors);
+ else
+ *errlist = errors;
+
+ return (rv);
+}
+
+static boolean_t
+propval_equals(nvpair_t *p1, nvpair_t *p2)
+{
+ if (nvpair_type(p1) == DATA_TYPE_NVLIST) {
+ /* dsl_prop_get_all_impl() format */
+ nvlist_t *attrs;
+ VERIFY(nvpair_value_nvlist(p1, &attrs) == 0);
+ VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
+ &p1) == 0);
+ }
+
+ if (nvpair_type(p2) == DATA_TYPE_NVLIST) {
+ nvlist_t *attrs;
+ VERIFY(nvpair_value_nvlist(p2, &attrs) == 0);
+ VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE,
+ &p2) == 0);
+ }
+
+ if (nvpair_type(p1) != nvpair_type(p2))
+ return (B_FALSE);
+
+ if (nvpair_type(p1) == DATA_TYPE_STRING) {
+ char *valstr1, *valstr2;
+
+ VERIFY(nvpair_value_string(p1, (char **)&valstr1) == 0);
+ VERIFY(nvpair_value_string(p2, (char **)&valstr2) == 0);
+ return (strcmp(valstr1, valstr2) == 0);
+ } else {
+ uint64_t intval1, intval2;
+
+ VERIFY(nvpair_value_uint64(p1, &intval1) == 0);
+ VERIFY(nvpair_value_uint64(p2, &intval2) == 0);
+ return (intval1 == intval2);
+ }
}
+/*
+ * Remove properties from props if they are not going to change (as determined
+ * by comparison with origprops). Remove them from origprops as well, since we
+ * do not need to clear or restore properties that won't change.
+ */
+static void
+props_reduce(nvlist_t *props, nvlist_t *origprops)
+{
+ nvpair_t *pair, *next_pair;
+
+ if (origprops == NULL)
+ return; /* all props need to be received */
+
+ pair = nvlist_next_nvpair(props, NULL);
+ while (pair != NULL) {
+ const char *propname = nvpair_name(pair);
+ nvpair_t *match;
+
+ next_pair = nvlist_next_nvpair(props, pair);
+
+ if ((nvlist_lookup_nvpair(origprops, propname,
+ &match) != 0) || !propval_equals(pair, match))
+ goto next; /* need to set received value */
+
+ /* don't clear the existing received value */
+ (void) nvlist_remove_nvpair(origprops, match);
+ /* don't bother receiving the property */
+ (void) nvlist_remove_nvpair(props, pair);
+next:
+ pair = next_pair;
+ }
+}
+
+#ifdef DEBUG
+static boolean_t zfs_ioc_recv_inject_err;
+#endif
+
/*
* inputs:
* zc_name name of containing filesystem
* zc_cookie file descriptor to recv from
* zc_begin_record the BEGIN record of the stream (not byteswapped)
* zc_guid force flag
+ * zc_cleanup_fd cleanup-on-exit file descriptor
+ * zc_action_handle handle for this guid/ds mapping (or zero on first call)
*
* outputs:
* zc_cookie number of bytes read
+ * zc_nvlist_dst{_size} error for each unapplied received property
+ * zc_obj zprop_errflags_t
+ * zc_action_handle handle for this guid/ds mapping
*/
static int
zfs_ioc_recv(zfs_cmd_t *zc)
{
file_t *fp;
- objset_t *os;
dmu_recv_cookie_t drc;
- zfsvfs_t *zfsvfs = NULL;
boolean_t force = (boolean_t)zc->zc_guid;
- int error, fd;
+ int fd;
+ int error = 0;
+ int props_error = 0;
+ nvlist_t *errors;
offset_t off;
- nvlist_t *props = NULL;
- nvlist_t *origprops = NULL;
- objset_t *origin = NULL;
+ nvlist_t *props = NULL; /* sent properties */
+ nvlist_t *origprops = NULL; /* existing properties */
+ char *origin = NULL;
char *tosnap;
char tofs[ZFS_MAXNAMELEN];
+ boolean_t first_recvd_props = B_FALSE;
if (dataset_namecheck(zc->zc_value, NULL, NULL) != 0 ||
strchr(zc->zc_value, '@') == NULL ||
strchr(zc->zc_value, '%'))
- return (EINVAL);
+ return (SET_ERROR(EINVAL));
(void) strcpy(tofs, zc->zc_value);
tosnap = strchr(tofs, '@');
- *tosnap = '\0';
- tosnap++;
+ *tosnap++ = '\0';
- if (zc->zc_nvlist_src != NULL &&
+ if (zc->zc_nvlist_src != 0 &&
(error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
- &props)) != 0)
+ zc->zc_iflags, &props)) != 0)
return (error);
fd = zc->zc_cookie;
fp = getf(fd);
if (fp == NULL) {
nvlist_free(props);
- return (EBADF);
+ return (SET_ERROR(EBADF));
}
- if (dmu_objset_open(tofs, DMU_OST_ANY,
- DS_MODE_USER | DS_MODE_READONLY, &os) == 0) {
- /*
- * Try to get the zfsvfs for the receiving objset.
- * There won't be one if we're operating on a zvol,
- * if the objset doesn't exist yet, or is not mounted.
- */
- mutex_enter(&os->os->os_user_ptr_lock);
- if (zfsvfs = dmu_objset_get_user(os)) {
- if (!mutex_tryenter(&zfsvfs->z_online_recv_lock)) {
- mutex_exit(&os->os->os_user_ptr_lock);
- dmu_objset_close(os);
- zfsvfs = NULL;
- error = EBUSY;
- goto out;
- }
- VFS_HOLD(zfsvfs->z_vfs);
- }
- mutex_exit(&os->os->os_user_ptr_lock);
+ VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0);
+
+ if (zc->zc_string[0])
+ origin = zc->zc_string;
+
+ error = dmu_recv_begin(tofs, tosnap,
+ &zc->zc_begin_record, force, origin, &drc);
+ if (error != 0)
+ goto out;
+
+ /*
+ * Set properties before we receive the stream so that they are applied
+ * to the new data. Note that we must call dmu_recv_stream() if
+ * dmu_recv_begin() succeeds.
+ */
+ if (props != NULL && !drc.drc_newfs) {
+ if (spa_version(dsl_dataset_get_spa(drc.drc_ds)) >=
+ SPA_VERSION_RECVD_PROPS &&
+ !dsl_prop_get_hasrecvd(tofs))
+ first_recvd_props = B_TRUE;
/*
- * If new properties are supplied, they are to completely
- * replace the existing ones, so stash away the existing ones.
+ * If new received properties are supplied, they are to
+ * completely replace the existing received properties, so stash
+ * away the existing ones.
*/
- if (props)
- (void) dsl_prop_get_all(os, &origprops, TRUE);
-
- dmu_objset_close(os);
+ if (dsl_prop_get_received(tofs, &origprops) == 0) {
+ nvlist_t *errlist = NULL;
+ /*
+ * Don't bother writing a property if its value won't
+ * change (and avoid the unnecessary security checks).
+ *
+ * The first receive after SPA_VERSION_RECVD_PROPS is a
+ * special case where we blow away all local properties
+ * regardless.
+ */
+ if (!first_recvd_props)
+ props_reduce(props, origprops);
+ if (zfs_check_clearable(tofs, origprops, &errlist) != 0)
+ (void) nvlist_merge(errors, errlist, 0);
+ nvlist_free(errlist);
+
+ if (clear_received_props(tofs, origprops,
+ first_recvd_props ? NULL : props) != 0)
+ zc->zc_obj |= ZPROP_ERR_NOCLEAR;
+ } else {
+ zc->zc_obj |= ZPROP_ERR_NOCLEAR;
+ }
}
- if (zc->zc_string[0]) {
- error = dmu_objset_open(zc->zc_string, DMU_OST_ANY,
- DS_MODE_USER | DS_MODE_READONLY, &origin);
- if (error)
- goto out;
- }
+ if (props != NULL) {
+ props_error = dsl_prop_set_hasrecvd(tofs);
- error = dmu_recv_begin(tofs, tosnap, &zc->zc_begin_record,
- force, origin, zfsvfs != NULL, &drc);
- if (origin)
- dmu_objset_close(origin);
- if (error)
- goto out;
+ if (props_error == 0) {
+ (void) zfs_set_prop_nvlist(tofs, ZPROP_SRC_RECEIVED,
+ props, errors);
+ }
+ }
- /*
- * Reset properties. We do this before we receive the stream
- * so that the properties are applied to the new data.
- */
- if (props) {
- clear_props(tofs, origprops, props);
+ if (zc->zc_nvlist_dst_size != 0 &&
+ (nvlist_smush(errors, zc->zc_nvlist_dst_size) != 0 ||
+ put_nvlist(zc, errors) != 0)) {
/*
- * XXX - Note, this is all-or-nothing; should be best-effort.
+ * Caller made zc->zc_nvlist_dst less than the minimum expected
+ * size or supplied an invalid address.
*/
- (void) zfs_set_prop_nvlist(tofs, props);
+ props_error = SET_ERROR(EINVAL);
}
off = fp->f_offset;
- error = dmu_recv_stream(&drc, fp->f_vnode, &off);
+ error = dmu_recv_stream(&drc, fp->f_vnode, &off, zc->zc_cleanup_fd,
+ &zc->zc_action_handle);
- if (error == 0 && zfsvfs) {
- char *osname;
- int mode;
+ if (error == 0) {
+ zfs_sb_t *zsb = NULL;
- /* online recv */
- osname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
- error = zfs_suspend_fs(zfsvfs, osname, &mode);
- if (error == 0) {
- int resume_err;
+ if (get_zfs_sb(tofs, &zsb) == 0) {
+ /* online recv */
+ int end_err;
- error = dmu_recv_end(&drc);
- resume_err = zfs_resume_fs(zfsvfs, osname, mode);
- error = error ? error : resume_err;
+ error = zfs_suspend_fs(zsb);
+ /*
+ * If the suspend fails, then the recv_end will
+ * likely also fail, and clean up after itself.
+ */
+ end_err = dmu_recv_end(&drc, zsb);
+ if (error == 0)
+ error = zfs_resume_fs(zsb, tofs);
+ error = error ? error : end_err;
+ deactivate_super(zsb->z_sb);
} else {
- dmu_recv_abort_cleanup(&drc);
+ error = dmu_recv_end(&drc, NULL);
}
- kmem_free(osname, MAXNAMELEN);
- } else if (error == 0) {
- error = dmu_recv_end(&drc);
}
zc->zc_cookie = off - fp->f_offset;
if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
fp->f_offset = off;
+#ifdef DEBUG
+ if (zfs_ioc_recv_inject_err) {
+ zfs_ioc_recv_inject_err = B_FALSE;
+ error = 1;
+ }
+#endif
+
+#ifdef _KERNEL
+ if (error == 0)
+ zvol_create_minors(tofs);
+#endif
+
/*
* On error, restore the original props.
*/
- if (error && props) {
- clear_props(tofs, props, NULL);
- (void) zfs_set_prop_nvlist(tofs, origprops);
+ if (error != 0 && props != NULL && !drc.drc_newfs) {
+ if (clear_received_props(tofs, props, NULL) != 0) {
+ /*
+ * We failed to clear the received properties.
+ * Since we may have left a $recvd value on the
+ * system, we can't clear the $hasrecvd flag.
+ */
+ zc->zc_obj |= ZPROP_ERR_NORESTORE;
+ } else if (first_recvd_props) {
+ dsl_prop_unset_hasrecvd(tofs);
+ }
+
+ if (origprops == NULL && !drc.drc_newfs) {
+ /* We failed to stash the original properties. */
+ zc->zc_obj |= ZPROP_ERR_NORESTORE;
+ }
+
+ /*
+ * dsl_props_set() will not convert RECEIVED to LOCAL on or
+ * after SPA_VERSION_RECVD_PROPS, so we need to specify LOCAL
+ * explictly if we're restoring local properties cleared in the
+ * first new-style receive.
+ */
+ if (origprops != NULL &&
+ zfs_set_prop_nvlist(tofs, (first_recvd_props ?
+ ZPROP_SRC_LOCAL : ZPROP_SRC_RECEIVED),
+ origprops, NULL) != 0) {
+ /*
+ * We stashed the original properties but failed to
+ * restore them.
+ */
+ zc->zc_obj |= ZPROP_ERR_NORESTORE;
+ }
}
out:
- if (zfsvfs) {
- mutex_exit(&zfsvfs->z_online_recv_lock);
- VFS_RELE(zfsvfs->z_vfs);
- }
nvlist_free(props);
nvlist_free(origprops);
+ nvlist_free(errors);
releasef(fd);
+
+ if (error == 0)
+ error = props_error;
+
return (error);
}
/*
* inputs:
* zc_name name of snapshot to send
- * zc_value short name of incremental fromsnap (may be empty)
* zc_cookie file descriptor to send stream to
- * zc_obj fromorigin flag (mutually exclusive with zc_value)
+ * zc_obj fromorigin flag (mutually exclusive with zc_fromobj)
+ * zc_sendobj objsetid of snapshot to send
+ * zc_fromobj objsetid of incremental fromsnap (may be zero)
+ * zc_guid if set, estimate size of stream only. zc_cookie is ignored.
+ * output size in zc_objset_type.
*
* outputs: none
*/
static int
zfs_ioc_send(zfs_cmd_t *zc)
{
- objset_t *fromsnap = NULL;
- objset_t *tosnap;
- file_t *fp;
int error;
offset_t off;
+ boolean_t estimate = (zc->zc_guid != 0);
+
+ if (zc->zc_obj != 0) {
+ dsl_pool_t *dp;
+ dsl_dataset_t *tosnap;
- error = dmu_objset_open(zc->zc_name, DMU_OST_ANY,
- DS_MODE_USER | DS_MODE_READONLY, &tosnap);
- if (error)
- return (error);
-
- if (zc->zc_value[0] != '\0') {
- char *buf;
- char *cp;
-
- buf = kmem_alloc(MAXPATHLEN, KM_SLEEP);
- (void) strncpy(buf, zc->zc_name, MAXPATHLEN);
- cp = strchr(buf, '@');
- if (cp)
- *(cp+1) = 0;
- (void) strncat(buf, zc->zc_value, MAXPATHLEN);
- error = dmu_objset_open(buf, DMU_OST_ANY,
- DS_MODE_USER | DS_MODE_READONLY, &fromsnap);
- kmem_free(buf, MAXPATHLEN);
- if (error) {
- dmu_objset_close(tosnap);
+ error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
+ if (error != 0)
+ return (error);
+
+ error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap);
+ if (error != 0) {
+ dsl_pool_rele(dp, FTAG);
return (error);
}
+
+ if (dsl_dir_is_clone(tosnap->ds_dir))
+ zc->zc_fromobj = tosnap->ds_dir->dd_phys->dd_origin_obj;
+ dsl_dataset_rele(tosnap, FTAG);
+ dsl_pool_rele(dp, FTAG);
}
- fp = getf(zc->zc_cookie);
- if (fp == NULL) {
- dmu_objset_close(tosnap);
- if (fromsnap)
- dmu_objset_close(fromsnap);
- return (EBADF);
+ if (estimate) {
+ dsl_pool_t *dp;
+ dsl_dataset_t *tosnap;
+ dsl_dataset_t *fromsnap = NULL;
+
+ error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
+ if (error != 0)
+ return (error);
+
+ error = dsl_dataset_hold_obj(dp, zc->zc_sendobj, FTAG, &tosnap);
+ if (error != 0) {
+ dsl_pool_rele(dp, FTAG);
+ return (error);
+ }
+
+ if (zc->zc_fromobj != 0) {
+ error = dsl_dataset_hold_obj(dp, zc->zc_fromobj,
+ FTAG, &fromsnap);
+ if (error != 0) {
+ dsl_dataset_rele(tosnap, FTAG);
+ dsl_pool_rele(dp, FTAG);
+ return (error);
+ }
+ }
+
+ error = dmu_send_estimate(tosnap, fromsnap,
+ &zc->zc_objset_type);
+
+ if (fromsnap != NULL)
+ dsl_dataset_rele(fromsnap, FTAG);
+ dsl_dataset_rele(tosnap, FTAG);
+ dsl_pool_rele(dp, FTAG);
+ } else {
+ file_t *fp = getf(zc->zc_cookie);
+ if (fp == NULL)
+ return (SET_ERROR(EBADF));
+
+ off = fp->f_offset;
+ error = dmu_send_obj(zc->zc_name, zc->zc_sendobj,
+ zc->zc_fromobj, zc->zc_cookie, fp->f_vnode, &off);
+
+ if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
+ fp->f_offset = off;
+ releasef(zc->zc_cookie);
}
+ return (error);
+}
- off = fp->f_offset;
- error = dmu_sendbackup(tosnap, fromsnap, zc->zc_obj, fp->f_vnode, &off);
+/*
+ * inputs:
+ * zc_name name of snapshot on which to report progress
+ * zc_cookie file descriptor of send stream
+ *
+ * outputs:
+ * zc_cookie number of bytes written in send stream thus far
+ */
+static int
+zfs_ioc_send_progress(zfs_cmd_t *zc)
+{
+ dsl_pool_t *dp;
+ dsl_dataset_t *ds;
+ dmu_sendarg_t *dsp = NULL;
+ int error;
- if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
- fp->f_offset = off;
- releasef(zc->zc_cookie);
- if (fromsnap)
- dmu_objset_close(fromsnap);
- dmu_objset_close(tosnap);
+ error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
+ if (error != 0)
+ return (error);
+
+ error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &ds);
+ if (error != 0) {
+ dsl_pool_rele(dp, FTAG);
+ return (error);
+ }
+
+ mutex_enter(&ds->ds_sendstream_lock);
+
+ /*
+ * Iterate over all the send streams currently active on this dataset.
+ * If there's one which matches the specified file descriptor _and_ the
+ * stream was started by the current process, return the progress of
+ * that stream.
+ */
+
+ for (dsp = list_head(&ds->ds_sendstreams); dsp != NULL;
+ dsp = list_next(&ds->ds_sendstreams, dsp)) {
+ if (dsp->dsa_outfd == zc->zc_cookie &&
+ dsp->dsa_proc->group_leader == curproc->group_leader)
+ break;
+ }
+
+ if (dsp != NULL)
+ zc->zc_cookie = *(dsp->dsa_off);
+ else
+ error = SET_ERROR(ENOENT);
+
+ mutex_exit(&ds->ds_sendstream_lock);
+ dsl_dataset_rele(ds, FTAG);
+ dsl_pool_rele(dp, FTAG);
return (error);
}
spa = spa_lookup(zc->zc_name);
if (spa == NULL) {
mutex_exit(&spa_namespace_lock);
- return (EIO);
+ return (SET_ERROR(EIO));
}
- if (spa->spa_log_state == SPA_LOG_MISSING) {
+ if (spa_get_log_state(spa) == SPA_LOG_MISSING) {
/* we need to let spa_open/spa_load clear the chains */
- spa->spa_log_state = SPA_LOG_CLEAR;
+ spa_set_log_state(spa, SPA_LOG_CLEAR);
}
+ spa->spa_last_open_failed = 0;
mutex_exit(&spa_namespace_lock);
- if ((error = spa_open(zc->zc_name, &spa, FTAG)) != 0)
+ if (zc->zc_cookie & ZPOOL_NO_REWIND) {
+ error = spa_open(zc->zc_name, &spa, FTAG);
+ } else {
+ nvlist_t *policy;
+ nvlist_t *config = NULL;
+
+ if (zc->zc_nvlist_src == 0)
+ return (SET_ERROR(EINVAL));
+
+ if ((error = get_nvlist(zc->zc_nvlist_src,
+ zc->zc_nvlist_src_size, zc->zc_iflags, &policy)) == 0) {
+ error = spa_open_rewind(zc->zc_name, &spa, FTAG,
+ policy, &config);
+ if (config != NULL) {
+ int err;
+
+ if ((err = put_nvlist(zc, config)) != 0)
+ error = err;
+ nvlist_free(config);
+ }
+ nvlist_free(policy);
+ }
+ }
+
+ if (error != 0)
return (error);
- spa_vdev_state_enter(spa);
+ spa_vdev_state_enter(spa, SCL_NONE);
if (zc->zc_guid == 0) {
vd = NULL;
if (vd == NULL) {
(void) spa_vdev_state_exit(spa, NULL, ENODEV);
spa_close(spa, FTAG);
- return (ENODEV);
+ return (SET_ERROR(ENODEV));
}
}
/*
* Resume any suspended I/Os.
*/
- zio_resume(spa);
+ if (zio_resume(spa) != 0)
+ error = SET_ERROR(EIO);
spa_close(spa, FTAG);
- return (0);
+ return (error);
}
-/*
- * inputs:
- * zc_name name of filesystem
- * zc_value name of origin snapshot
- *
- * outputs: none
- */
static int
-zfs_ioc_promote(zfs_cmd_t *zc)
+zfs_ioc_pool_reopen(zfs_cmd_t *zc)
{
- char *cp;
+ spa_t *spa;
+ int error;
- /*
- * We don't need to unmount *all* the origin fs's snapshots, but
- * it's easier.
+ error = spa_open(zc->zc_name, &spa, FTAG);
+ if (error != 0)
+ return (error);
+
+ spa_vdev_state_enter(spa, SCL_NONE);
+
+ /*
+ * If a resilver is already in progress then set the
+ * spa_scrub_reopen flag to B_TRUE so that we don't restart
+ * the scan as a side effect of the reopen. Otherwise, let
+ * vdev_open() decided if a resilver is required.
+ */
+ spa->spa_scrub_reopen = dsl_scan_resilvering(spa->spa_dsl_pool);
+ vdev_reopen(spa->spa_root_vdev);
+ spa->spa_scrub_reopen = B_FALSE;
+
+ (void) spa_vdev_state_exit(spa, NULL, 0);
+ spa_close(spa, FTAG);
+ return (0);
+}
+/*
+ * inputs:
+ * zc_name name of filesystem
+ * zc_value name of origin snapshot
+ *
+ * outputs:
+ * zc_string name of conflicting snapshot, if there is one
+ */
+static int
+zfs_ioc_promote(zfs_cmd_t *zc)
+{
+ char *cp;
+
+ /*
+ * We don't need to unmount *all* the origin fs's snapshots, but
+ * it's easier.
*/
cp = strchr(zc->zc_value, '@');
if (cp)
*cp = '\0';
(void) dmu_objset_find(zc->zc_value,
- zfs_unmount_snap, NULL, DS_FIND_SNAPSHOTS);
- return (dsl_dataset_promote(zc->zc_name));
+ zfs_unmount_snap_cb, NULL, DS_FIND_SNAPSHOTS);
+ return (dsl_dataset_promote(zc->zc_name, zc->zc_string));
+}
+
+/*
+ * Retrieve a single {user|group}{used|quota}@... property.
+ *
+ * inputs:
+ * zc_name name of filesystem
+ * zc_objset_type zfs_userquota_prop_t
+ * zc_value domain name (eg. "S-1-234-567-89")
+ * zc_guid RID/UID/GID
+ *
+ * outputs:
+ * zc_cookie property value
+ */
+static int
+zfs_ioc_userspace_one(zfs_cmd_t *zc)
+{
+ zfs_sb_t *zsb;
+ int error;
+
+ if (zc->zc_objset_type >= ZFS_NUM_USERQUOTA_PROPS)
+ return (SET_ERROR(EINVAL));
+
+ error = zfs_sb_hold(zc->zc_name, FTAG, &zsb, B_FALSE);
+ if (error != 0)
+ return (error);
+
+ error = zfs_userspace_one(zsb,
+ zc->zc_objset_type, zc->zc_value, zc->zc_guid, &zc->zc_cookie);
+ zfs_sb_rele(zsb, FTAG);
+
+ return (error);
+}
+
+/*
+ * inputs:
+ * zc_name name of filesystem
+ * zc_cookie zap cursor
+ * zc_objset_type zfs_userquota_prop_t
+ * zc_nvlist_dst[_size] buffer to fill (not really an nvlist)
+ *
+ * outputs:
+ * zc_nvlist_dst[_size] data buffer (array of zfs_useracct_t)
+ * zc_cookie zap cursor
+ */
+static int
+zfs_ioc_userspace_many(zfs_cmd_t *zc)
+{
+ zfs_sb_t *zsb;
+ int bufsize = zc->zc_nvlist_dst_size;
+ int error;
+ void *buf;
+
+ if (bufsize <= 0)
+ return (SET_ERROR(ENOMEM));
+
+ error = zfs_sb_hold(zc->zc_name, FTAG, &zsb, B_FALSE);
+ if (error != 0)
+ return (error);
+
+ buf = vmem_alloc(bufsize, KM_SLEEP);
+
+ error = zfs_userspace_many(zsb, zc->zc_objset_type, &zc->zc_cookie,
+ buf, &zc->zc_nvlist_dst_size);
+
+ if (error == 0) {
+ error = xcopyout(buf,
+ (void *)(uintptr_t)zc->zc_nvlist_dst,
+ zc->zc_nvlist_dst_size);
+ }
+ vmem_free(buf, bufsize);
+ zfs_sb_rele(zsb, FTAG);
+
+ return (error);
+}
+
+/*
+ * inputs:
+ * zc_name name of filesystem
+ *
+ * outputs:
+ * none
+ */
+static int
+zfs_ioc_userspace_upgrade(zfs_cmd_t *zc)
+{
+ objset_t *os;
+ int error = 0;
+ zfs_sb_t *zsb;
+
+ if (get_zfs_sb(zc->zc_name, &zsb) == 0) {
+ if (!dmu_objset_userused_enabled(zsb->z_os)) {
+ /*
+ * If userused is not enabled, it may be because the
+ * objset needs to be closed & reopened (to grow the
+ * objset_phys_t). Suspend/resume the fs will do that.
+ */
+ error = zfs_suspend_fs(zsb);
+ if (error == 0) {
+ dmu_objset_refresh_ownership(zsb->z_os,
+ zsb);
+ error = zfs_resume_fs(zsb, zc->zc_name);
+ }
+ }
+ if (error == 0)
+ error = dmu_objset_userspace_upgrade(zsb->z_os);
+ deactivate_super(zsb->z_sb);
+ } else {
+ /* XXX kind of reading contents without owning */
+ error = dmu_objset_hold(zc->zc_name, FTAG, &os);
+ if (error != 0)
+ return (error);
+
+ error = dmu_objset_userspace_upgrade(os);
+ dmu_objset_rele(os, FTAG);
+ }
+
+ return (error);
+}
+
+static int
+zfs_ioc_share(zfs_cmd_t *zc)
+{
+ return (SET_ERROR(ENOSYS));
+}
+
+ace_t full_access[] = {
+ {(uid_t)-1, ACE_ALL_PERMS, ACE_EVERYONE, 0}
+};
+
+/*
+ * inputs:
+ * zc_name name of containing filesystem
+ * zc_obj object # beyond which we want next in-use object #
+ *
+ * outputs:
+ * zc_obj next in-use object #
+ */
+static int
+zfs_ioc_next_obj(zfs_cmd_t *zc)
+{
+ objset_t *os = NULL;
+ int error;
+
+ error = dmu_objset_hold(zc->zc_name, FTAG, &os);
+ if (error != 0)
+ return (error);
+
+ error = dmu_object_next(os, &zc->zc_obj, B_FALSE,
+ os->os_dsl_dataset->ds_phys->ds_prev_snap_txg);
+
+ dmu_objset_rele(os, FTAG);
+ return (error);
+}
+
+/*
+ * inputs:
+ * zc_name name of filesystem
+ * zc_value prefix name for snapshot
+ * zc_cleanup_fd cleanup-on-exit file descriptor for calling process
+ *
+ * outputs:
+ * zc_value short name of new snapshot
+ */
+static int
+zfs_ioc_tmp_snapshot(zfs_cmd_t *zc)
+{
+ char *snap_name;
+ char *hold_name;
+ int error;
+ minor_t minor;
+
+ error = zfs_onexit_fd_hold(zc->zc_cleanup_fd, &minor);
+ if (error != 0)
+ return (error);
+
+ snap_name = kmem_asprintf("%s-%016llx", zc->zc_value,
+ (u_longlong_t)ddi_get_lbolt64());
+ hold_name = kmem_asprintf("%%%s", zc->zc_value);
+
+ error = dsl_dataset_snapshot_tmp(zc->zc_name, snap_name, minor,
+ hold_name);
+ if (error == 0)
+ (void) strcpy(zc->zc_value, snap_name);
+ strfree(snap_name);
+ strfree(hold_name);
+ zfs_onexit_fd_rele(zc->zc_cleanup_fd);
+ return (error);
+}
+
+/*
+ * inputs:
+ * zc_name name of "to" snapshot
+ * zc_value name of "from" snapshot
+ * zc_cookie file descriptor to write diff data on
+ *
+ * outputs:
+ * dmu_diff_record_t's to the file descriptor
+ */
+static int
+zfs_ioc_diff(zfs_cmd_t *zc)
+{
+ file_t *fp;
+ offset_t off;
+ int error;
+
+ fp = getf(zc->zc_cookie);
+ if (fp == NULL)
+ return (SET_ERROR(EBADF));
+
+ off = fp->f_offset;
+
+ error = dmu_diff(zc->zc_name, zc->zc_value, fp->f_vnode, &off);
+
+ if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
+ fp->f_offset = off;
+ releasef(zc->zc_cookie);
+
+ return (error);
+}
+
+/*
+ * Remove all ACL files in shares dir
+ */
+#ifdef HAVE_SMB_SHARE
+static int
+zfs_smb_acl_purge(znode_t *dzp)
+{
+ zap_cursor_t zc;
+ zap_attribute_t zap;
+ zfs_sb_t *zsb = ZTOZSB(dzp);
+ int error;
+
+ for (zap_cursor_init(&zc, zsb->z_os, dzp->z_id);
+ (error = zap_cursor_retrieve(&zc, &zap)) == 0;
+ zap_cursor_advance(&zc)) {
+ if ((error = VOP_REMOVE(ZTOV(dzp), zap.za_name, kcred,
+ NULL, 0)) != 0)
+ break;
+ }
+ zap_cursor_fini(&zc);
+ return (error);
+}
+#endif /* HAVE_SMB_SHARE */
+
+static int
+zfs_ioc_smb_acl(zfs_cmd_t *zc)
+{
+#ifdef HAVE_SMB_SHARE
+ vnode_t *vp;
+ znode_t *dzp;
+ vnode_t *resourcevp = NULL;
+ znode_t *sharedir;
+ zfs_sb_t *zsb;
+ nvlist_t *nvlist;
+ char *src, *target;
+ vattr_t vattr;
+ vsecattr_t vsec;
+ int error = 0;
+
+ if ((error = lookupname(zc->zc_value, UIO_SYSSPACE,
+ NO_FOLLOW, NULL, &vp)) != 0)
+ return (error);
+
+ /* Now make sure mntpnt and dataset are ZFS */
+
+ if (vp->v_vfsp->vfs_fstype != zfsfstype ||
+ (strcmp((char *)refstr_value(vp->v_vfsp->vfs_resource),
+ zc->zc_name) != 0)) {
+ VN_RELE(vp);
+ return (SET_ERROR(EINVAL));
+ }
+
+ dzp = VTOZ(vp);
+ zsb = ZTOZSB(dzp);
+ ZFS_ENTER(zsb);
+
+ /*
+ * Create share dir if its missing.
+ */
+ mutex_enter(&zsb->z_lock);
+ if (zsb->z_shares_dir == 0) {
+ dmu_tx_t *tx;
+
+ tx = dmu_tx_create(zsb->z_os);
+ dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, TRUE,
+ ZFS_SHARES_DIR);
+ dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL);
+ error = dmu_tx_assign(tx, TXG_WAIT);
+ if (error != 0) {
+ dmu_tx_abort(tx);
+ } else {
+ error = zfs_create_share_dir(zsb, tx);
+ dmu_tx_commit(tx);
+ }
+ if (error != 0) {
+ mutex_exit(&zsb->z_lock);
+ VN_RELE(vp);
+ ZFS_EXIT(zsb);
+ return (error);
+ }
+ }
+ mutex_exit(&zsb->z_lock);
+
+ ASSERT(zsb->z_shares_dir);
+ if ((error = zfs_zget(zsb, zsb->z_shares_dir, &sharedir)) != 0) {
+ VN_RELE(vp);
+ ZFS_EXIT(zsb);
+ return (error);
+ }
+
+ switch (zc->zc_cookie) {
+ case ZFS_SMB_ACL_ADD:
+ vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE;
+ vattr.va_mode = S_IFREG|0777;
+ vattr.va_uid = 0;
+ vattr.va_gid = 0;
+
+ vsec.vsa_mask = VSA_ACE;
+ vsec.vsa_aclentp = &full_access;
+ vsec.vsa_aclentsz = sizeof (full_access);
+ vsec.vsa_aclcnt = 1;
+
+ error = VOP_CREATE(ZTOV(sharedir), zc->zc_string,
+ &vattr, EXCL, 0, &resourcevp, kcred, 0, NULL, &vsec);
+ if (resourcevp)
+ VN_RELE(resourcevp);
+ break;
+
+ case ZFS_SMB_ACL_REMOVE:
+ error = VOP_REMOVE(ZTOV(sharedir), zc->zc_string, kcred,
+ NULL, 0);
+ break;
+
+ case ZFS_SMB_ACL_RENAME:
+ if ((error = get_nvlist(zc->zc_nvlist_src,
+ zc->zc_nvlist_src_size, zc->zc_iflags, &nvlist)) != 0) {
+ VN_RELE(vp);
+ ZFS_EXIT(zsb);
+ return (error);
+ }
+ if (nvlist_lookup_string(nvlist, ZFS_SMB_ACL_SRC, &src) ||
+ nvlist_lookup_string(nvlist, ZFS_SMB_ACL_TARGET,
+ &target)) {
+ VN_RELE(vp);
+ VN_RELE(ZTOV(sharedir));
+ ZFS_EXIT(zsb);
+ nvlist_free(nvlist);
+ return (error);
+ }
+ error = VOP_RENAME(ZTOV(sharedir), src, ZTOV(sharedir), target,
+ kcred, NULL, 0);
+ nvlist_free(nvlist);
+ break;
+
+ case ZFS_SMB_ACL_PURGE:
+ error = zfs_smb_acl_purge(sharedir);
+ break;
+
+ default:
+ error = SET_ERROR(EINVAL);
+ break;
+ }
+
+ VN_RELE(vp);
+ VN_RELE(ZTOV(sharedir));
+
+ ZFS_EXIT(zsb);
+
+ return (error);
+#else
+ return (SET_ERROR(ENOTSUP));
+#endif /* HAVE_SMB_SHARE */
+}
+
+/*
+ * innvl: {
+ * "holds" -> { snapname -> holdname (string), ... }
+ * (optional) "cleanup_fd" -> fd (int32)
+ * }
+ *
+ * outnvl: {
+ * snapname -> error value (int32)
+ * ...
+ * }
+ */
+/* ARGSUSED */
+static int
+zfs_ioc_hold(const char *pool, nvlist_t *args, nvlist_t *errlist)
+{
+ nvlist_t *holds;
+ int cleanup_fd = -1;
+ int error;
+ minor_t minor = 0;
+
+ error = nvlist_lookup_nvlist(args, "holds", &holds);
+ if (error != 0)
+ return (SET_ERROR(EINVAL));
+
+ if (nvlist_lookup_int32(args, "cleanup_fd", &cleanup_fd) == 0) {
+ error = zfs_onexit_fd_hold(cleanup_fd, &minor);
+ if (error != 0)
+ return (error);
+ }
+
+ error = dsl_dataset_user_hold(holds, minor, errlist);
+ if (minor != 0)
+ zfs_onexit_fd_rele(cleanup_fd);
+ return (error);
+}
+
+/*
+ * innvl is not used.
+ *
+ * outnvl: {
+ * holdname -> time added (uint64 seconds since epoch)
+ * ...
+ * }
+ */
+/* ARGSUSED */
+static int
+zfs_ioc_get_holds(const char *snapname, nvlist_t *args, nvlist_t *outnvl)
+{
+ return (dsl_dataset_get_holds(snapname, outnvl));
+}
+
+/*
+ * innvl: {
+ * snapname -> { holdname, ... }
+ * ...
+ * }
+ *
+ * outnvl: {
+ * snapname -> error value (int32)
+ * ...
+ * }
+ */
+/* ARGSUSED */
+static int
+zfs_ioc_release(const char *pool, nvlist_t *holds, nvlist_t *errlist)
+{
+ return (dsl_dataset_user_release(holds, errlist));
+}
+
+/*
+ * inputs:
+ * zc_guid flags (ZEVENT_NONBLOCK)
+ *
+ * outputs:
+ * zc_nvlist_dst next nvlist event
+ * zc_cookie dropped events since last get
+ * zc_cleanup_fd cleanup-on-exit file descriptor
+ */
+static int
+zfs_ioc_events_next(zfs_cmd_t *zc)
+{
+ zfs_zevent_t *ze;
+ nvlist_t *event = NULL;
+ minor_t minor;
+ uint64_t dropped = 0;
+ int error;
+
+ error = zfs_zevent_fd_hold(zc->zc_cleanup_fd, &minor, &ze);
+ if (error != 0)
+ return (error);
+
+ do {
+ error = zfs_zevent_next(ze, &event,
+ &zc->zc_nvlist_dst_size, &dropped);
+ if (event != NULL) {
+ zc->zc_cookie = dropped;
+ error = put_nvlist(zc, event);
+ nvlist_free(event);
+ }
+
+ if (zc->zc_guid & ZEVENT_NONBLOCK)
+ break;
+
+ if ((error == 0) || (error != ENOENT))
+ break;
+
+ error = zfs_zevent_wait(ze);
+ if (error != 0)
+ break;
+ } while (1);
+
+ zfs_zevent_fd_rele(zc->zc_cleanup_fd);
+
+ return (error);
+}
+
+/*
+ * outputs:
+ * zc_cookie cleared events count
+ */
+static int
+zfs_ioc_events_clear(zfs_cmd_t *zc)
+{
+ int count;
+
+ zfs_zevent_drain_all(&count);
+ zc->zc_cookie = count;
+
+ return (0);
+}
+
+/*
+ * inputs:
+ * zc_name name of new filesystem or snapshot
+ * zc_value full name of old snapshot
+ *
+ * outputs:
+ * zc_cookie space in bytes
+ * zc_objset_type compressed space in bytes
+ * zc_perm_action uncompressed space in bytes
+ */
+static int
+zfs_ioc_space_written(zfs_cmd_t *zc)
+{
+ int error;
+ dsl_pool_t *dp;
+ dsl_dataset_t *new, *old;
+
+ error = dsl_pool_hold(zc->zc_name, FTAG, &dp);
+ if (error != 0)
+ return (error);
+ error = dsl_dataset_hold(dp, zc->zc_name, FTAG, &new);
+ if (error != 0) {
+ dsl_pool_rele(dp, FTAG);
+ return (error);
+ }
+ error = dsl_dataset_hold(dp, zc->zc_value, FTAG, &old);
+ if (error != 0) {
+ dsl_dataset_rele(new, FTAG);
+ dsl_pool_rele(dp, FTAG);
+ return (error);
+ }
+
+ error = dsl_dataset_space_written(old, new, &zc->zc_cookie,
+ &zc->zc_objset_type, &zc->zc_perm_action);
+ dsl_dataset_rele(old, FTAG);
+ dsl_dataset_rele(new, FTAG);
+ dsl_pool_rele(dp, FTAG);
+ return (error);
+}
+
+/*
+ * innvl: {
+ * "firstsnap" -> snapshot name
+ * }
+ *
+ * outnvl: {
+ * "used" -> space in bytes
+ * "compressed" -> compressed space in bytes
+ * "uncompressed" -> uncompressed space in bytes
+ * }
+ */
+static int
+zfs_ioc_space_snaps(const char *lastsnap, nvlist_t *innvl, nvlist_t *outnvl)
+{
+ int error;
+ dsl_pool_t *dp;
+ dsl_dataset_t *new, *old;
+ char *firstsnap;
+ uint64_t used, comp, uncomp;
+
+ if (nvlist_lookup_string(innvl, "firstsnap", &firstsnap) != 0)
+ return (SET_ERROR(EINVAL));
+
+ error = dsl_pool_hold(lastsnap, FTAG, &dp);
+ if (error != 0)
+ return (error);
+
+ error = dsl_dataset_hold(dp, lastsnap, FTAG, &new);
+ if (error != 0) {
+ dsl_pool_rele(dp, FTAG);
+ return (error);
+ }
+ error = dsl_dataset_hold(dp, firstsnap, FTAG, &old);
+ if (error != 0) {
+ dsl_dataset_rele(new, FTAG);
+ dsl_pool_rele(dp, FTAG);
+ return (error);
+ }
+
+ error = dsl_dataset_space_wouldfree(old, new, &used, &comp, &uncomp);
+ dsl_dataset_rele(old, FTAG);
+ dsl_dataset_rele(new, FTAG);
+ dsl_pool_rele(dp, FTAG);
+ fnvlist_add_uint64(outnvl, "used", used);
+ fnvlist_add_uint64(outnvl, "compressed", comp);
+ fnvlist_add_uint64(outnvl, "uncompressed", uncomp);
+ return (error);
}
/*
- * We don't want to have a hard dependency
- * against some special symbols in sharefs
- * nfs, and smbsrv. Determine them if needed when
- * the first file system is shared.
- * Neither sharefs, nfs or smbsrv are unloadable modules.
+ * innvl: {
+ * "fd" -> file descriptor to write stream to (int32)
+ * (optional) "fromsnap" -> full snap name to send an incremental from
+ * }
+ *
+ * outnvl is unused
*/
-int (*znfsexport_fs)(void *arg);
-int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t);
-int (*zsmbexport_fs)(void *arg, boolean_t add_share);
-
-int zfs_nfsshare_inited;
-int zfs_smbshare_inited;
-
-ddi_modhandle_t nfs_mod;
-ddi_modhandle_t sharefs_mod;
-ddi_modhandle_t smbsrv_mod;
-kmutex_t zfs_share_lock;
-
+/* ARGSUSED */
static int
-zfs_init_sharefs()
+zfs_ioc_send_new(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl)
{
int error;
+ offset_t off;
+ char *fromname = NULL;
+ int fd;
+ file_t *fp;
- ASSERT(MUTEX_HELD(&zfs_share_lock));
- /* Both NFS and SMB shares also require sharetab support. */
- if (sharefs_mod == NULL && ((sharefs_mod =
- ddi_modopen("fs/sharefs",
- KRTLD_MODE_FIRST, &error)) == NULL)) {
- return (ENOSYS);
- }
- if (zshare_fs == NULL && ((zshare_fs =
- (int (*)(enum sharefs_sys_op, share_t *, uint32_t))
- ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) {
- return (ENOSYS);
- }
- return (0);
+ error = nvlist_lookup_int32(innvl, "fd", &fd);
+ if (error != 0)
+ return (SET_ERROR(EINVAL));
+
+ (void) nvlist_lookup_string(innvl, "fromsnap", &fromname);
+
+ if ((fp = getf(fd)) == NULL)
+ return (SET_ERROR(EBADF));
+
+ off = fp->f_offset;
+ error = dmu_send(snapname, fromname, fd, fp->f_vnode, &off);
+
+ if (VOP_SEEK(fp->f_vnode, fp->f_offset, &off, NULL) == 0)
+ fp->f_offset = off;
+
+ releasef(fd);
+ return (error);
}
+/*
+ * Determine approximately how large a zfs send stream will be -- the number
+ * of bytes that will be written to the fd supplied to zfs_ioc_send_new().
+ *
+ * innvl: {
+ * (optional) "fromsnap" -> full snap name to send an incremental from
+ * }
+ *
+ * outnvl: {
+ * "space" -> bytes of space (uint64)
+ * }
+ */
static int
-zfs_ioc_share(zfs_cmd_t *zc)
+zfs_ioc_send_space(const char *snapname, nvlist_t *innvl, nvlist_t *outnvl)
{
+ dsl_pool_t *dp;
+ dsl_dataset_t *fromsnap = NULL;
+ dsl_dataset_t *tosnap;
int error;
- int opcode;
+ char *fromname;
+ uint64_t space;
- switch (zc->zc_share.z_sharetype) {
- case ZFS_SHARE_NFS:
- case ZFS_UNSHARE_NFS:
- if (zfs_nfsshare_inited == 0) {
- mutex_enter(&zfs_share_lock);
- if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs",
- KRTLD_MODE_FIRST, &error)) == NULL)) {
- mutex_exit(&zfs_share_lock);
- return (ENOSYS);
- }
- if (znfsexport_fs == NULL &&
- ((znfsexport_fs = (int (*)(void *))
- ddi_modsym(nfs_mod,
- "nfs_export", &error)) == NULL)) {
- mutex_exit(&zfs_share_lock);
- return (ENOSYS);
- }
- error = zfs_init_sharefs();
- if (error) {
- mutex_exit(&zfs_share_lock);
- return (ENOSYS);
- }
- zfs_nfsshare_inited = 1;
- mutex_exit(&zfs_share_lock);
- }
- break;
- case ZFS_SHARE_SMB:
- case ZFS_UNSHARE_SMB:
- if (zfs_smbshare_inited == 0) {
- mutex_enter(&zfs_share_lock);
- if (smbsrv_mod == NULL && ((smbsrv_mod =
- ddi_modopen("drv/smbsrv",
- KRTLD_MODE_FIRST, &error)) == NULL)) {
- mutex_exit(&zfs_share_lock);
- return (ENOSYS);
- }
- if (zsmbexport_fs == NULL && ((zsmbexport_fs =
- (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod,
- "smb_server_share", &error)) == NULL)) {
- mutex_exit(&zfs_share_lock);
- return (ENOSYS);
- }
- error = zfs_init_sharefs();
- if (error) {
- mutex_exit(&zfs_share_lock);
- return (ENOSYS);
- }
- zfs_smbshare_inited = 1;
- mutex_exit(&zfs_share_lock);
- }
- break;
- default:
- return (EINVAL);
+ error = dsl_pool_hold(snapname, FTAG, &dp);
+ if (error != 0)
+ return (error);
+
+ error = dsl_dataset_hold(dp, snapname, FTAG, &tosnap);
+ if (error != 0) {
+ dsl_pool_rele(dp, FTAG);
+ return (error);
}
- switch (zc->zc_share.z_sharetype) {
- case ZFS_SHARE_NFS:
- case ZFS_UNSHARE_NFS:
- if (error =
- znfsexport_fs((void *)
- (uintptr_t)zc->zc_share.z_exportdata))
- return (error);
- break;
- case ZFS_SHARE_SMB:
- case ZFS_UNSHARE_SMB:
- if (error = zsmbexport_fs((void *)
- (uintptr_t)zc->zc_share.z_exportdata,
- zc->zc_share.z_sharetype == ZFS_SHARE_SMB ?
- B_TRUE : B_FALSE)) {
+ error = nvlist_lookup_string(innvl, "fromsnap", &fromname);
+ if (error == 0) {
+ error = dsl_dataset_hold(dp, fromname, FTAG, &fromsnap);
+ if (error != 0) {
+ dsl_dataset_rele(tosnap, FTAG);
+ dsl_pool_rele(dp, FTAG);
return (error);
}
- break;
}
- opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS ||
- zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ?
- SHAREFS_ADD : SHAREFS_REMOVE;
+ error = dmu_send_estimate(tosnap, fromsnap, &space);
+ fnvlist_add_uint64(outnvl, "space", space);
- /*
- * Add or remove share from sharetab
- */
- error = zshare_fs(opcode,
- (void *)(uintptr_t)zc->zc_share.z_sharedata,
- zc->zc_share.z_sharemax);
-
- return (error);
-
-}
-
-/*
- * pool create, destroy, and export don't log the history as part of
- * zfsdev_ioctl, but rather zfs_ioc_pool_create, and zfs_ioc_pool_export
- * do the logging of those commands.
- */
-static zfs_ioc_vec_t zfs_ioc_vec[] = {
- { zfs_ioc_pool_create, zfs_secpolicy_config, POOL_NAME, B_FALSE },
- { zfs_ioc_pool_destroy, zfs_secpolicy_config, POOL_NAME, B_FALSE },
- { zfs_ioc_pool_import, zfs_secpolicy_config, POOL_NAME, B_TRUE },
- { zfs_ioc_pool_export, zfs_secpolicy_config, POOL_NAME, B_FALSE },
- { zfs_ioc_pool_configs, zfs_secpolicy_none, NO_NAME, B_FALSE },
- { zfs_ioc_pool_stats, zfs_secpolicy_read, POOL_NAME, B_FALSE },
- { zfs_ioc_pool_tryimport, zfs_secpolicy_config, NO_NAME, B_FALSE },
- { zfs_ioc_pool_scrub, zfs_secpolicy_config, POOL_NAME, B_TRUE },
- { zfs_ioc_pool_freeze, zfs_secpolicy_config, NO_NAME, B_FALSE },
- { zfs_ioc_pool_upgrade, zfs_secpolicy_config, POOL_NAME, B_TRUE },
- { zfs_ioc_pool_get_history, zfs_secpolicy_config, POOL_NAME, B_FALSE },
- { zfs_ioc_vdev_add, zfs_secpolicy_config, POOL_NAME, B_TRUE },
- { zfs_ioc_vdev_remove, zfs_secpolicy_config, POOL_NAME, B_TRUE },
- { zfs_ioc_vdev_set_state, zfs_secpolicy_config, POOL_NAME, B_TRUE },
- { zfs_ioc_vdev_attach, zfs_secpolicy_config, POOL_NAME, B_TRUE },
- { zfs_ioc_vdev_detach, zfs_secpolicy_config, POOL_NAME, B_TRUE },
- { zfs_ioc_vdev_setpath, zfs_secpolicy_config, POOL_NAME, B_FALSE },
- { zfs_ioc_objset_stats, zfs_secpolicy_read, DATASET_NAME, B_FALSE },
- { zfs_ioc_objset_zplprops, zfs_secpolicy_read, DATASET_NAME, B_FALSE },
- { zfs_ioc_dataset_list_next, zfs_secpolicy_read,
- DATASET_NAME, B_FALSE },
- { zfs_ioc_snapshot_list_next, zfs_secpolicy_read,
- DATASET_NAME, B_FALSE },
- { zfs_ioc_set_prop, zfs_secpolicy_none, DATASET_NAME, B_TRUE },
- { zfs_ioc_create_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE },
- { zfs_ioc_remove_minor, zfs_secpolicy_minor, DATASET_NAME, B_FALSE },
- { zfs_ioc_create, zfs_secpolicy_create, DATASET_NAME, B_TRUE },
- { zfs_ioc_destroy, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE },
- { zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME, B_TRUE },
- { zfs_ioc_rename, zfs_secpolicy_rename, DATASET_NAME, B_TRUE },
- { zfs_ioc_recv, zfs_secpolicy_receive, DATASET_NAME, B_TRUE },
- { zfs_ioc_send, zfs_secpolicy_send, DATASET_NAME, B_TRUE },
- { zfs_ioc_inject_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE },
- { zfs_ioc_clear_fault, zfs_secpolicy_inject, NO_NAME, B_FALSE },
- { zfs_ioc_inject_list_next, zfs_secpolicy_inject, NO_NAME, B_FALSE },
- { zfs_ioc_error_log, zfs_secpolicy_inject, POOL_NAME, B_FALSE },
- { zfs_ioc_clear, zfs_secpolicy_config, POOL_NAME, B_TRUE },
- { zfs_ioc_promote, zfs_secpolicy_promote, DATASET_NAME, B_TRUE },
- { zfs_ioc_destroy_snaps, zfs_secpolicy_destroy, DATASET_NAME, B_TRUE },
- { zfs_ioc_snapshot, zfs_secpolicy_snapshot, DATASET_NAME, B_TRUE },
- { zfs_ioc_dsobj_to_dsname, zfs_secpolicy_config, POOL_NAME, B_FALSE },
- { zfs_ioc_obj_to_path, zfs_secpolicy_config, NO_NAME, B_FALSE },
- { zfs_ioc_pool_set_props, zfs_secpolicy_config, POOL_NAME, B_TRUE },
- { zfs_ioc_pool_get_props, zfs_secpolicy_read, POOL_NAME, B_FALSE },
- { zfs_ioc_set_fsacl, zfs_secpolicy_fsacl, DATASET_NAME, B_TRUE },
- { zfs_ioc_get_fsacl, zfs_secpolicy_read, DATASET_NAME, B_FALSE },
- { zfs_ioc_iscsi_perm_check, zfs_secpolicy_iscsi,
- DATASET_NAME, B_FALSE },
- { zfs_ioc_share, zfs_secpolicy_share, DATASET_NAME, B_FALSE },
- { zfs_ioc_inherit_prop, zfs_secpolicy_inherit, DATASET_NAME, B_TRUE },
-};
+ if (fromsnap != NULL)
+ dsl_dataset_rele(fromsnap, FTAG);
+ dsl_dataset_rele(tosnap, FTAG);
+ dsl_pool_rele(dp, FTAG);
+ return (error);
+}
-static int
-zfsdev_ioctl(dev_t dev, int cmd, intptr_t arg, int flag, cred_t *cr, int *rvalp)
+
+static zfs_ioc_vec_t zfs_ioc_vec[ZFS_IOC_LAST - ZFS_IOC_FIRST];
+
+static void
+zfs_ioctl_register_legacy(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
+ zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck,
+ boolean_t log_history, zfs_ioc_poolcheck_t pool_check)
{
- zfs_cmd_t *zc;
- uint_t vec;
- int error, rc;
+ zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST];
+
+ ASSERT3U(ioc, >=, ZFS_IOC_FIRST);
+ ASSERT3U(ioc, <, ZFS_IOC_LAST);
+ ASSERT3P(vec->zvec_legacy_func, ==, NULL);
+ ASSERT3P(vec->zvec_func, ==, NULL);
+
+ vec->zvec_legacy_func = func;
+ vec->zvec_secpolicy = secpolicy;
+ vec->zvec_namecheck = namecheck;
+ vec->zvec_allow_log = log_history;
+ vec->zvec_pool_check = pool_check;
+}
+
+/*
+ * See the block comment at the beginning of this file for details on
+ * each argument to this function.
+ */
+static void
+zfs_ioctl_register(const char *name, zfs_ioc_t ioc, zfs_ioc_func_t *func,
+ zfs_secpolicy_func_t *secpolicy, zfs_ioc_namecheck_t namecheck,
+ zfs_ioc_poolcheck_t pool_check, boolean_t smush_outnvlist,
+ boolean_t allow_log)
+{
+ zfs_ioc_vec_t *vec = &zfs_ioc_vec[ioc - ZFS_IOC_FIRST];
+
+ ASSERT3U(ioc, >=, ZFS_IOC_FIRST);
+ ASSERT3U(ioc, <, ZFS_IOC_LAST);
+ ASSERT3P(vec->zvec_legacy_func, ==, NULL);
+ ASSERT3P(vec->zvec_func, ==, NULL);
+
+ /* if we are logging, the name must be valid */
+ ASSERT(!allow_log || namecheck != NO_NAME);
+
+ vec->zvec_name = name;
+ vec->zvec_func = func;
+ vec->zvec_secpolicy = secpolicy;
+ vec->zvec_namecheck = namecheck;
+ vec->zvec_pool_check = pool_check;
+ vec->zvec_smush_outnvlist = smush_outnvlist;
+ vec->zvec_allow_log = allow_log;
+}
+
+static void
+zfs_ioctl_register_pool(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
+ zfs_secpolicy_func_t *secpolicy, boolean_t log_history,
+ zfs_ioc_poolcheck_t pool_check)
+{
+ zfs_ioctl_register_legacy(ioc, func, secpolicy,
+ POOL_NAME, log_history, pool_check);
+}
+
+static void
+zfs_ioctl_register_dataset_nolog(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
+ zfs_secpolicy_func_t *secpolicy, zfs_ioc_poolcheck_t pool_check)
+{
+ zfs_ioctl_register_legacy(ioc, func, secpolicy,
+ DATASET_NAME, B_FALSE, pool_check);
+}
- if (getminor(dev) != 0)
- return (zvol_ioctl(dev, cmd, arg, flag, cr, rvalp));
+static void
+zfs_ioctl_register_pool_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func)
+{
+ zfs_ioctl_register_legacy(ioc, func, zfs_secpolicy_config,
+ POOL_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
+}
- vec = cmd - ZFS_IOC;
- ASSERT3U(getmajor(dev), ==, ddi_driver_major(zfs_dip));
+static void
+zfs_ioctl_register_pool_meta(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
+ zfs_secpolicy_func_t *secpolicy)
+{
+ zfs_ioctl_register_legacy(ioc, func, secpolicy,
+ NO_NAME, B_FALSE, POOL_CHECK_NONE);
+}
- if (vec >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0]))
- return (EINVAL);
+static void
+zfs_ioctl_register_dataset_read_secpolicy(zfs_ioc_t ioc,
+ zfs_ioc_legacy_func_t *func, zfs_secpolicy_func_t *secpolicy)
+{
+ zfs_ioctl_register_legacy(ioc, func, secpolicy,
+ DATASET_NAME, B_FALSE, POOL_CHECK_SUSPENDED);
+}
- zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP);
+static void
+zfs_ioctl_register_dataset_read(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func)
+{
+ zfs_ioctl_register_dataset_read_secpolicy(ioc, func,
+ zfs_secpolicy_read);
+}
- error = xcopyin((void *)arg, zc, sizeof (zfs_cmd_t));
+static void
+zfs_ioctl_register_dataset_modify(zfs_ioc_t ioc, zfs_ioc_legacy_func_t *func,
+ zfs_secpolicy_func_t *secpolicy)
+{
+ zfs_ioctl_register_legacy(ioc, func, secpolicy,
+ DATASET_NAME, B_TRUE, POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
+}
- if (error == 0)
- error = zfs_ioc_vec[vec].zvec_secpolicy(zc, cr);
+static void
+zfs_ioctl_init(void)
+{
+ zfs_ioctl_register("snapshot", ZFS_IOC_SNAPSHOT,
+ zfs_ioc_snapshot, zfs_secpolicy_snapshot, POOL_NAME,
+ POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
+
+ zfs_ioctl_register("log_history", ZFS_IOC_LOG_HISTORY,
+ zfs_ioc_log_history, zfs_secpolicy_log_history, NO_NAME,
+ POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_FALSE);
+
+ zfs_ioctl_register("space_snaps", ZFS_IOC_SPACE_SNAPS,
+ zfs_ioc_space_snaps, zfs_secpolicy_read, DATASET_NAME,
+ POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
+
+ zfs_ioctl_register("send", ZFS_IOC_SEND_NEW,
+ zfs_ioc_send_new, zfs_secpolicy_send_new, DATASET_NAME,
+ POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
+
+ zfs_ioctl_register("send_space", ZFS_IOC_SEND_SPACE,
+ zfs_ioc_send_space, zfs_secpolicy_read, DATASET_NAME,
+ POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
+
+ zfs_ioctl_register("create", ZFS_IOC_CREATE,
+ zfs_ioc_create, zfs_secpolicy_create_clone, DATASET_NAME,
+ POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
+
+ zfs_ioctl_register("clone", ZFS_IOC_CLONE,
+ zfs_ioc_clone, zfs_secpolicy_create_clone, DATASET_NAME,
+ POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
+
+ zfs_ioctl_register("destroy_snaps", ZFS_IOC_DESTROY_SNAPS,
+ zfs_ioc_destroy_snaps, zfs_secpolicy_destroy_snaps, POOL_NAME,
+ POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
+
+ zfs_ioctl_register("hold", ZFS_IOC_HOLD,
+ zfs_ioc_hold, zfs_secpolicy_hold, POOL_NAME,
+ POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
+ zfs_ioctl_register("release", ZFS_IOC_RELEASE,
+ zfs_ioc_release, zfs_secpolicy_release, POOL_NAME,
+ POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_TRUE, B_TRUE);
+
+ zfs_ioctl_register("get_holds", ZFS_IOC_GET_HOLDS,
+ zfs_ioc_get_holds, zfs_secpolicy_read, DATASET_NAME,
+ POOL_CHECK_SUSPENDED, B_FALSE, B_FALSE);
+
+ zfs_ioctl_register("rollback", ZFS_IOC_ROLLBACK,
+ zfs_ioc_rollback, zfs_secpolicy_rollback, DATASET_NAME,
+ POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY, B_FALSE, B_TRUE);
+
+ /* IOCTLS that use the legacy function signature */
+
+ zfs_ioctl_register_legacy(ZFS_IOC_POOL_FREEZE, zfs_ioc_pool_freeze,
+ zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_READONLY);
+
+ zfs_ioctl_register_pool(ZFS_IOC_POOL_CREATE, zfs_ioc_pool_create,
+ zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE);
+ zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SCAN,
+ zfs_ioc_pool_scan);
+ zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_UPGRADE,
+ zfs_ioc_pool_upgrade);
+ zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ADD,
+ zfs_ioc_vdev_add);
+ zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_REMOVE,
+ zfs_ioc_vdev_remove);
+ zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SET_STATE,
+ zfs_ioc_vdev_set_state);
+ zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_ATTACH,
+ zfs_ioc_vdev_attach);
+ zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_DETACH,
+ zfs_ioc_vdev_detach);
+ zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETPATH,
+ zfs_ioc_vdev_setpath);
+ zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SETFRU,
+ zfs_ioc_vdev_setfru);
+ zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_SET_PROPS,
+ zfs_ioc_pool_set_props);
+ zfs_ioctl_register_pool_modify(ZFS_IOC_VDEV_SPLIT,
+ zfs_ioc_vdev_split);
+ zfs_ioctl_register_pool_modify(ZFS_IOC_POOL_REGUID,
+ zfs_ioc_pool_reguid);
+
+ zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_CONFIGS,
+ zfs_ioc_pool_configs, zfs_secpolicy_none);
+ zfs_ioctl_register_pool_meta(ZFS_IOC_POOL_TRYIMPORT,
+ zfs_ioc_pool_tryimport, zfs_secpolicy_config);
+ zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_FAULT,
+ zfs_ioc_inject_fault, zfs_secpolicy_inject);
+ zfs_ioctl_register_pool_meta(ZFS_IOC_CLEAR_FAULT,
+ zfs_ioc_clear_fault, zfs_secpolicy_inject);
+ zfs_ioctl_register_pool_meta(ZFS_IOC_INJECT_LIST_NEXT,
+ zfs_ioc_inject_list_next, zfs_secpolicy_inject);
/*
- * Ensure that all pool/dataset names are valid before we pass down to
- * the lower layers.
+ * pool destroy, and export don't log the history as part of
+ * zfsdev_ioctl, but rather zfs_ioc_pool_export
+ * does the logging of those commands.
*/
- if (error == 0) {
- zc->zc_name[sizeof (zc->zc_name) - 1] = '\0';
- switch (zfs_ioc_vec[vec].zvec_namecheck) {
- case POOL_NAME:
- if (pool_namecheck(zc->zc_name, NULL, NULL) != 0)
- error = EINVAL;
- break;
+ zfs_ioctl_register_pool(ZFS_IOC_POOL_DESTROY, zfs_ioc_pool_destroy,
+ zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE);
+ zfs_ioctl_register_pool(ZFS_IOC_POOL_EXPORT, zfs_ioc_pool_export,
+ zfs_secpolicy_config, B_FALSE, POOL_CHECK_NONE);
+
+ zfs_ioctl_register_pool(ZFS_IOC_POOL_STATS, zfs_ioc_pool_stats,
+ zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE);
+ zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_PROPS, zfs_ioc_pool_get_props,
+ zfs_secpolicy_read, B_FALSE, POOL_CHECK_NONE);
+
+ zfs_ioctl_register_pool(ZFS_IOC_ERROR_LOG, zfs_ioc_error_log,
+ zfs_secpolicy_inject, B_FALSE, POOL_CHECK_SUSPENDED);
+ zfs_ioctl_register_pool(ZFS_IOC_DSOBJ_TO_DSNAME,
+ zfs_ioc_dsobj_to_dsname,
+ zfs_secpolicy_diff, B_FALSE, POOL_CHECK_SUSPENDED);
+ zfs_ioctl_register_pool(ZFS_IOC_POOL_GET_HISTORY,
+ zfs_ioc_pool_get_history,
+ zfs_secpolicy_config, B_FALSE, POOL_CHECK_SUSPENDED);
+
+ zfs_ioctl_register_pool(ZFS_IOC_POOL_IMPORT, zfs_ioc_pool_import,
+ zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE);
+
+ zfs_ioctl_register_pool(ZFS_IOC_CLEAR, zfs_ioc_clear,
+ zfs_secpolicy_config, B_TRUE, POOL_CHECK_NONE);
+ zfs_ioctl_register_pool(ZFS_IOC_POOL_REOPEN, zfs_ioc_pool_reopen,
+ zfs_secpolicy_config, B_TRUE, POOL_CHECK_SUSPENDED);
+
+ zfs_ioctl_register_dataset_read(ZFS_IOC_SPACE_WRITTEN,
+ zfs_ioc_space_written);
+ zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_RECVD_PROPS,
+ zfs_ioc_objset_recvd_props);
+ zfs_ioctl_register_dataset_read(ZFS_IOC_NEXT_OBJ,
+ zfs_ioc_next_obj);
+ zfs_ioctl_register_dataset_read(ZFS_IOC_GET_FSACL,
+ zfs_ioc_get_fsacl);
+ zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_STATS,
+ zfs_ioc_objset_stats);
+ zfs_ioctl_register_dataset_read(ZFS_IOC_OBJSET_ZPLPROPS,
+ zfs_ioc_objset_zplprops);
+ zfs_ioctl_register_dataset_read(ZFS_IOC_DATASET_LIST_NEXT,
+ zfs_ioc_dataset_list_next);
+ zfs_ioctl_register_dataset_read(ZFS_IOC_SNAPSHOT_LIST_NEXT,
+ zfs_ioc_snapshot_list_next);
+ zfs_ioctl_register_dataset_read(ZFS_IOC_SEND_PROGRESS,
+ zfs_ioc_send_progress);
+
+ zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_DIFF,
+ zfs_ioc_diff, zfs_secpolicy_diff);
+ zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_STATS,
+ zfs_ioc_obj_to_stats, zfs_secpolicy_diff);
+ zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_OBJ_TO_PATH,
+ zfs_ioc_obj_to_path, zfs_secpolicy_diff);
+ zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_ONE,
+ zfs_ioc_userspace_one, zfs_secpolicy_userspace_one);
+ zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_USERSPACE_MANY,
+ zfs_ioc_userspace_many, zfs_secpolicy_userspace_many);
+ zfs_ioctl_register_dataset_read_secpolicy(ZFS_IOC_SEND,
+ zfs_ioc_send, zfs_secpolicy_send);
+
+ zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_PROP, zfs_ioc_set_prop,
+ zfs_secpolicy_none);
+ zfs_ioctl_register_dataset_modify(ZFS_IOC_DESTROY, zfs_ioc_destroy,
+ zfs_secpolicy_destroy);
+ zfs_ioctl_register_dataset_modify(ZFS_IOC_RENAME, zfs_ioc_rename,
+ zfs_secpolicy_rename);
+ zfs_ioctl_register_dataset_modify(ZFS_IOC_RECV, zfs_ioc_recv,
+ zfs_secpolicy_recv);
+ zfs_ioctl_register_dataset_modify(ZFS_IOC_PROMOTE, zfs_ioc_promote,
+ zfs_secpolicy_promote);
+ zfs_ioctl_register_dataset_modify(ZFS_IOC_INHERIT_PROP,
+ zfs_ioc_inherit_prop, zfs_secpolicy_inherit_prop);
+ zfs_ioctl_register_dataset_modify(ZFS_IOC_SET_FSACL, zfs_ioc_set_fsacl,
+ zfs_secpolicy_set_fsacl);
+
+ zfs_ioctl_register_dataset_nolog(ZFS_IOC_SHARE, zfs_ioc_share,
+ zfs_secpolicy_share, POOL_CHECK_NONE);
+ zfs_ioctl_register_dataset_nolog(ZFS_IOC_SMB_ACL, zfs_ioc_smb_acl,
+ zfs_secpolicy_smb_acl, POOL_CHECK_NONE);
+ zfs_ioctl_register_dataset_nolog(ZFS_IOC_USERSPACE_UPGRADE,
+ zfs_ioc_userspace_upgrade, zfs_secpolicy_userspace_upgrade,
+ POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
+ zfs_ioctl_register_dataset_nolog(ZFS_IOC_TMP_SNAPSHOT,
+ zfs_ioc_tmp_snapshot, zfs_secpolicy_tmp_snapshot,
+ POOL_CHECK_SUSPENDED | POOL_CHECK_READONLY);
- case DATASET_NAME:
- if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0)
- error = EINVAL;
- break;
+ /*
+ * ZoL functions
+ */
+ zfs_ioctl_register_legacy(ZFS_IOC_EVENTS_NEXT, zfs_ioc_events_next,
+ zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_NONE);
+ zfs_ioctl_register_legacy(ZFS_IOC_EVENTS_CLEAR, zfs_ioc_events_clear,
+ zfs_secpolicy_config, NO_NAME, B_FALSE, POOL_CHECK_NONE);
+}
- case NO_NAME:
- break;
+int
+pool_status_check(const char *name, zfs_ioc_namecheck_t type,
+ zfs_ioc_poolcheck_t check)
+{
+ spa_t *spa;
+ int error;
+
+ ASSERT(type == POOL_NAME || type == DATASET_NAME);
+
+ if (check & POOL_CHECK_NONE)
+ return (0);
+
+ error = spa_open(name, &spa, FTAG);
+ if (error == 0) {
+ if ((check & POOL_CHECK_SUSPENDED) && spa_suspended(spa))
+ error = SET_ERROR(EAGAIN);
+ else if ((check & POOL_CHECK_READONLY) && !spa_writeable(spa))
+ error = SET_ERROR(EROFS);
+ spa_close(spa, FTAG);
+ }
+ return (error);
+}
+
+static void *
+zfsdev_get_state_impl(minor_t minor, enum zfsdev_state_type which)
+{
+ zfsdev_state_t *zs;
+
+ ASSERT(MUTEX_HELD(&zfsdev_state_lock));
+
+ for (zs = list_head(&zfsdev_state_list); zs != NULL;
+ zs = list_next(&zfsdev_state_list, zs)) {
+ if (zs->zs_minor == minor) {
+ switch (which) {
+ case ZST_ONEXIT:
+ return (zs->zs_onexit);
+ case ZST_ZEVENT:
+ return (zs->zs_zevent);
+ case ZST_ALL:
+ return (zs);
+ }
}
}
- if (error == 0)
- error = zfs_ioc_vec[vec].zvec_func(zc);
+ return (NULL);
+}
- rc = xcopyout(zc, (void *)arg, sizeof (zfs_cmd_t));
- if (error == 0) {
- error = rc;
- if (zfs_ioc_vec[vec].zvec_his_log == B_TRUE)
- zfs_log_history(zc);
+void *
+zfsdev_get_state(minor_t minor, enum zfsdev_state_type which)
+{
+ void *ptr;
+
+ mutex_enter(&zfsdev_state_lock);
+ ptr = zfsdev_get_state_impl(minor, which);
+ mutex_exit(&zfsdev_state_lock);
+
+ return (ptr);
+}
+
+minor_t
+zfsdev_getminor(struct file *filp)
+{
+ ASSERT(filp != NULL);
+ ASSERT(filp->private_data != NULL);
+
+ return (((zfsdev_state_t *)filp->private_data)->zs_minor);
+}
+
+/*
+ * Find a free minor number. The zfsdev_state_list is expected to
+ * be short since it is only a list of currently open file handles.
+ */
+minor_t
+zfsdev_minor_alloc(void)
+{
+ static minor_t last_minor = 0;
+ minor_t m;
+
+ ASSERT(MUTEX_HELD(&zfsdev_state_lock));
+
+ for (m = last_minor + 1; m != last_minor; m++) {
+ if (m > ZFSDEV_MAX_MINOR)
+ m = 1;
+ if (zfsdev_get_state_impl(m, ZST_ALL) == NULL) {
+ last_minor = m;
+ return (m);
+ }
}
- kmem_free(zc, sizeof (zfs_cmd_t));
- return (error);
+ return (0);
}
static int
-zfs_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
+zfsdev_state_init(struct file *filp)
{
- if (cmd != DDI_ATTACH)
- return (DDI_FAILURE);
+ zfsdev_state_t *zs;
+ minor_t minor;
+
+ ASSERT(MUTEX_HELD(&zfsdev_state_lock));
+
+ minor = zfsdev_minor_alloc();
+ if (minor == 0)
+ return (SET_ERROR(ENXIO));
+
+ zs = kmem_zalloc(sizeof (zfsdev_state_t), KM_SLEEP);
- if (ddi_create_minor_node(dip, "zfs", S_IFCHR, 0,
- DDI_PSEUDO, 0) == DDI_FAILURE)
- return (DDI_FAILURE);
+ zs->zs_file = filp;
+ zs->zs_minor = minor;
+ filp->private_data = zs;
- zfs_dip = dip;
+ zfs_onexit_init((zfs_onexit_t **)&zs->zs_onexit);
+ zfs_zevent_init((zfs_zevent_t **)&zs->zs_zevent);
- ddi_report_dev(dip);
+ list_insert_tail(&zfsdev_state_list, zs);
- return (DDI_SUCCESS);
+ return (0);
}
static int
-zfs_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
+zfsdev_state_destroy(struct file *filp)
{
- if (spa_busy() || zfs_busy() || zvol_busy())
- return (DDI_FAILURE);
+ zfsdev_state_t *zs;
+
+ ASSERT(MUTEX_HELD(&zfsdev_state_lock));
+ ASSERT(filp->private_data != NULL);
+
+ zs = filp->private_data;
+ zfs_onexit_destroy(zs->zs_onexit);
+ zfs_zevent_destroy(zs->zs_zevent);
+
+ list_remove(&zfsdev_state_list, zs);
+ kmem_free(zs, sizeof (zfsdev_state_t));
- if (cmd != DDI_DETACH)
- return (DDI_FAILURE);
+ return (0);
+}
- zfs_dip = NULL;
+static int
+zfsdev_open(struct inode *ino, struct file *filp)
+{
+ int error;
- ddi_prop_remove_all(dip);
- ddi_remove_minor_node(dip, NULL);
+ mutex_enter(&zfsdev_state_lock);
+ error = zfsdev_state_init(filp);
+ mutex_exit(&zfsdev_state_lock);
- return (DDI_SUCCESS);
+ return (-error);
}
-/*ARGSUSED*/
static int
-zfs_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, void **result)
+zfsdev_release(struct inode *ino, struct file *filp)
+{
+ int error;
+
+ mutex_enter(&zfsdev_state_lock);
+ error = zfsdev_state_destroy(filp);
+ mutex_exit(&zfsdev_state_lock);
+
+ return (-error);
+}
+
+static long
+zfsdev_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
{
- switch (infocmd) {
- case DDI_INFO_DEVT2DEVINFO:
- *result = zfs_dip;
- return (DDI_SUCCESS);
+ zfs_cmd_t *zc;
+ uint_t vecnum;
+ int error, rc, len, flag = 0;
+ const zfs_ioc_vec_t *vec;
+ char *saved_poolname;
+ nvlist_t *innvl = NULL;
+
+ vecnum = cmd - ZFS_IOC_FIRST;
+ if (vecnum >= sizeof (zfs_ioc_vec) / sizeof (zfs_ioc_vec[0]))
+ return (-SET_ERROR(EINVAL));
+ vec = &zfs_ioc_vec[vecnum];
+
+ /*
+ * The registered ioctl list may be sparse, verify that either
+ * a normal or legacy handler are registered.
+ */
+ if (vec->zvec_func == NULL && vec->zvec_legacy_func == NULL)
+ return (-SET_ERROR(EINVAL));
+
+ zc = kmem_zalloc(sizeof (zfs_cmd_t), KM_SLEEP | KM_NODEBUG);
+ saved_poolname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
+
+ error = ddi_copyin((void *)arg, zc, sizeof (zfs_cmd_t), flag);
+ if (error != 0) {
+ error = SET_ERROR(EFAULT);
+ goto out;
+ }
+
+ zc->zc_iflags = flag & FKIOCTL;
+ if (zc->zc_nvlist_src_size != 0) {
+ error = get_nvlist(zc->zc_nvlist_src, zc->zc_nvlist_src_size,
+ zc->zc_iflags, &innvl);
+ if (error != 0)
+ goto out;
+ }
+
+ /*
+ * Ensure that all pool/dataset names are valid before we pass down to
+ * the lower layers.
+ */
+ zc->zc_name[sizeof (zc->zc_name) - 1] = '\0';
+ switch (vec->zvec_namecheck) {
+ case POOL_NAME:
+ if (pool_namecheck(zc->zc_name, NULL, NULL) != 0)
+ error = SET_ERROR(EINVAL);
+ else
+ error = pool_status_check(zc->zc_name,
+ vec->zvec_namecheck, vec->zvec_pool_check);
+ break;
+
+ case DATASET_NAME:
+ if (dataset_namecheck(zc->zc_name, NULL, NULL) != 0)
+ error = SET_ERROR(EINVAL);
+ else
+ error = pool_status_check(zc->zc_name,
+ vec->zvec_namecheck, vec->zvec_pool_check);
+ break;
+
+ case NO_NAME:
+ break;
+ }
+
+
+ if (error == 0 && !(flag & FKIOCTL))
+ error = vec->zvec_secpolicy(zc, innvl, CRED());
+
+ if (error != 0)
+ goto out;
+
+ /* legacy ioctls can modify zc_name */
+ (void) strlcpy(saved_poolname, zc->zc_name, sizeof (saved_poolname));
+ len = strcspn(saved_poolname, "/@") + 1;
+ saved_poolname[len] = '\0';
+
+ if (vec->zvec_func != NULL) {
+ nvlist_t *outnvl;
+ int puterror = 0;
+ spa_t *spa;
+ nvlist_t *lognv = NULL;
+
+ ASSERT(vec->zvec_legacy_func == NULL);
+
+ /*
+ * Add the innvl to the lognv before calling the func,
+ * in case the func changes the innvl.
+ */
+ if (vec->zvec_allow_log) {
+ lognv = fnvlist_alloc();
+ fnvlist_add_string(lognv, ZPOOL_HIST_IOCTL,
+ vec->zvec_name);
+ if (!nvlist_empty(innvl)) {
+ fnvlist_add_nvlist(lognv, ZPOOL_HIST_INPUT_NVL,
+ innvl);
+ }
+ }
+
+ VERIFY0(nvlist_alloc(&outnvl, NV_UNIQUE_NAME, KM_PUSHPAGE));
+ error = vec->zvec_func(zc->zc_name, innvl, outnvl);
- case DDI_INFO_DEVT2INSTANCE:
- *result = (void *)0;
- return (DDI_SUCCESS);
+ if (error == 0 && vec->zvec_allow_log &&
+ spa_open(zc->zc_name, &spa, FTAG) == 0) {
+ if (!nvlist_empty(outnvl)) {
+ fnvlist_add_nvlist(lognv, ZPOOL_HIST_OUTPUT_NVL,
+ outnvl);
+ }
+ (void) spa_history_log_nvl(spa, lognv);
+ spa_close(spa, FTAG);
+ }
+ fnvlist_free(lognv);
+
+ if (!nvlist_empty(outnvl) || zc->zc_nvlist_dst_size != 0) {
+ int smusherror = 0;
+ if (vec->zvec_smush_outnvlist) {
+ smusherror = nvlist_smush(outnvl,
+ zc->zc_nvlist_dst_size);
+ }
+ if (smusherror == 0)
+ puterror = put_nvlist(zc, outnvl);
+ }
+
+ if (puterror != 0)
+ error = puterror;
+
+ nvlist_free(outnvl);
+ } else {
+ error = vec->zvec_legacy_func(zc);
+ }
+
+out:
+ nvlist_free(innvl);
+ rc = ddi_copyout(zc, (void *)arg, sizeof (zfs_cmd_t), flag);
+ if (error == 0 && rc != 0)
+ error = SET_ERROR(EFAULT);
+ if (error == 0 && vec->zvec_allow_log) {
+ char *s = tsd_get(zfs_allow_log_key);
+ if (s != NULL)
+ strfree(s);
+ (void) tsd_set(zfs_allow_log_key, strdup(saved_poolname));
}
- return (DDI_FAILURE);
+ kmem_free(saved_poolname, MAXNAMELEN);
+ kmem_free(zc, sizeof (zfs_cmd_t));
+ return (-error);
}
-/*
- * OK, so this is a little weird.
- *
- * /dev/zfs is the control node, i.e. minor 0.
- * /dev/zvol/[r]dsk/pool/dataset are the zvols, minor > 0.
- *
- * /dev/zfs has basically nothing to do except serve up ioctls,
- * so most of the standard driver entry points are in zvol.c.
- */
-static struct cb_ops zfs_cb_ops = {
- zvol_open, /* open */
- zvol_close, /* close */
- zvol_strategy, /* strategy */
- nodev, /* print */
- zvol_dump, /* dump */
- zvol_read, /* read */
- zvol_write, /* write */
- zfsdev_ioctl, /* ioctl */
- nodev, /* devmap */
- nodev, /* mmap */
- nodev, /* segmap */
- nochpoll, /* poll */
- ddi_prop_op, /* prop_op */
- NULL, /* streamtab */
- D_NEW | D_MP | D_64BIT, /* Driver compatibility flag */
- CB_REV, /* version */
- nodev, /* async read */
- nodev, /* async write */
+#ifdef CONFIG_COMPAT
+static long
+zfsdev_compat_ioctl(struct file *filp, unsigned cmd, unsigned long arg)
+{
+ return (zfsdev_ioctl(filp, cmd, arg));
+}
+#else
+#define zfsdev_compat_ioctl NULL
+#endif
+
+static const struct file_operations zfsdev_fops = {
+ .open = zfsdev_open,
+ .release = zfsdev_release,
+ .unlocked_ioctl = zfsdev_ioctl,
+ .compat_ioctl = zfsdev_compat_ioctl,
+ .owner = THIS_MODULE,
};
-static struct dev_ops zfs_dev_ops = {
- DEVO_REV, /* version */
- 0, /* refcnt */
- zfs_info, /* info */
- nulldev, /* identify */
- nulldev, /* probe */
- zfs_attach, /* attach */
- zfs_detach, /* detach */
- nodev, /* reset */
- &zfs_cb_ops, /* driver operations */
- NULL, /* no bus operations */
- NULL, /* power */
- ddi_quiesce_not_needed, /* quiesce */
+static struct miscdevice zfs_misc = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = ZFS_DRIVER,
+ .fops = &zfsdev_fops,
};
-static struct modldrv zfs_modldrv = {
- &mod_driverops,
- "ZFS storage pool",
- &zfs_dev_ops
-};
+static int
+zfs_attach(void)
+{
+ int error;
-static struct modlinkage modlinkage = {
- MODREV_1,
- (void *)&zfs_modlfs,
- (void *)&zfs_modldrv,
- NULL
-};
+ mutex_init(&zfsdev_state_lock, NULL, MUTEX_DEFAULT, NULL);
+ list_create(&zfsdev_state_list, sizeof (zfsdev_state_t),
+ offsetof(zfsdev_state_t, zs_next));
+ error = misc_register(&zfs_misc);
+ if (error != 0) {
+ printk(KERN_INFO "ZFS: misc_register() failed %d\n", error);
+ return (error);
+ }
-uint_t zfs_fsyncer_key;
-extern uint_t rrw_tsd_key;
+ return (0);
+}
+
+static void
+zfs_detach(void)
+{
+ int error;
+
+ error = misc_deregister(&zfs_misc);
+ if (error != 0)
+ printk(KERN_INFO "ZFS: misc_deregister() failed %d\n", error);
+
+ mutex_destroy(&zfsdev_state_lock);
+ list_destroy(&zfsdev_state_list);
+}
+
+static void
+zfs_allow_log_destroy(void *arg)
+{
+ char *poolname = arg;
+ strfree(poolname);
+}
+
+#ifdef DEBUG
+#define ZFS_DEBUG_STR " (DEBUG mode)"
+#else
+#define ZFS_DEBUG_STR ""
+#endif
int
_init(void)
spa_init(FREAD | FWRITE);
zfs_init();
- zvol_init();
- if ((error = mod_install(&modlinkage)) != 0) {
- zvol_fini();
- zfs_fini();
- spa_fini();
- return (error);
- }
+ if ((error = zvol_init()) != 0)
+ goto out1;
+
+ zfs_ioctl_init();
+
+ if ((error = zfs_attach()) != 0)
+ goto out2;
tsd_create(&zfs_fsyncer_key, NULL);
- tsd_create(&rrw_tsd_key, NULL);
+ tsd_create(&rrw_tsd_key, rrw_tsd_destroy);
+ tsd_create(&zfs_allow_log_key, zfs_allow_log_destroy);
- error = ldi_ident_from_mod(&modlinkage, &zfs_li);
- ASSERT(error == 0);
- mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL);
+ printk(KERN_NOTICE "ZFS: Loaded module v%s-%s%s, "
+ "ZFS pool version %s, ZFS filesystem version %s\n",
+ ZFS_META_VERSION, ZFS_META_RELEASE, ZFS_DEBUG_STR,
+ SPA_VERSION_STRING, ZPL_VERSION_STRING);
+#ifndef CONFIG_FS_POSIX_ACL
+ printk(KERN_NOTICE "ZFS: Posix ACLs disabled by kernel\n");
+#endif /* CONFIG_FS_POSIX_ACL */
return (0);
+
+out2:
+ (void) zvol_fini();
+out1:
+ zfs_fini();
+ spa_fini();
+ printk(KERN_NOTICE "ZFS: Failed to Load ZFS Filesystem v%s-%s%s"
+ ", rc = %d\n", ZFS_META_VERSION, ZFS_META_RELEASE,
+ ZFS_DEBUG_STR, error);
+
+ return (error);
}
int
_fini(void)
{
- int error;
-
- if (spa_busy() || zfs_busy() || zvol_busy() || zio_injection_enabled)
- return (EBUSY);
-
- if ((error = mod_remove(&modlinkage)) != 0)
- return (error);
-
+ zfs_detach();
zvol_fini();
zfs_fini();
spa_fini();
- if (zfs_nfsshare_inited)
- (void) ddi_modclose(nfs_mod);
- if (zfs_smbshare_inited)
- (void) ddi_modclose(smbsrv_mod);
- if (zfs_nfsshare_inited || zfs_smbshare_inited)
- (void) ddi_modclose(sharefs_mod);
tsd_destroy(&zfs_fsyncer_key);
- ldi_ident_release(zfs_li);
- zfs_li = NULL;
- mutex_destroy(&zfs_share_lock);
+ tsd_destroy(&rrw_tsd_key);
+ tsd_destroy(&zfs_allow_log_key);
- return (error);
-}
+ printk(KERN_NOTICE "ZFS: Unloaded module v%s-%s%s\n",
+ ZFS_META_VERSION, ZFS_META_RELEASE, ZFS_DEBUG_STR);
-int
-_info(struct modinfo *modinfop)
-{
- return (mod_info(&modlinkage, modinfop));
+ return (0);
}
+
+#ifdef HAVE_SPL
+spl_module_init(_init);
+spl_module_exit(_fini);
+
+MODULE_DESCRIPTION("ZFS");
+MODULE_AUTHOR(ZFS_META_AUTHOR);
+MODULE_LICENSE(ZFS_META_LICENSE);
+MODULE_VERSION(ZFS_META_VERSION "-" ZFS_META_RELEASE);
+#endif /* HAVE_SPL */
projects / mirror_zfs.git / blobdiff