* CDDL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013 by Delphix. All rights reserved.
+ * Copyright (c) 2013 Martin Matuska. All rights reserved.
*/
-#pragma ident "%Z%%M% %I% %E% SMI"
-
+#include <sys/zfs_context.h>
#include <sys/dmu.h>
#include <sys/dmu_objset.h>
#include <sys/dmu_tx.h>
#include <sys/dsl_prop.h>
#include <sys/dsl_synctask.h>
#include <sys/spa.h>
-#include <sys/zio_checksum.h> /* for the default checksum value */
#include <sys/zap.h>
#include <sys/fs/zfs.h>
#include "zfs_prop.h"
+#define ZPROP_INHERIT_SUFFIX "$inherit"
+#define ZPROP_RECVD_SUFFIX "$recvd"
+
static int
-dodefault(const char *propname, int intsz, int numint, void *buf)
+dodefault(const char *propname, int intsz, int numints, void *buf)
{
zfs_prop_t prop;
*/
if ((prop = zfs_name_to_prop(propname)) == ZPROP_INVAL ||
(zfs_prop_readonly(prop) && !zfs_prop_setonce(prop)))
- return (ENOENT);
+ return (SET_ERROR(ENOENT));
if (zfs_prop_get_type(prop) == PROP_TYPE_STRING) {
if (intsz != 1)
- return (EOVERFLOW);
+ return (SET_ERROR(EOVERFLOW));
(void) strncpy(buf, zfs_prop_default_string(prop),
- numint);
+ numints);
} else {
- if (intsz != 8 || numint < 1)
- return (EOVERFLOW);
+ if (intsz != 8 || numints < 1)
+ return (SET_ERROR(EOVERFLOW));
*(uint64_t *)buf = zfs_prop_default_numeric(prop);
}
int
dsl_prop_get_dd(dsl_dir_t *dd, const char *propname,
- int intsz, int numint, void *buf, char *setpoint)
+ int intsz, int numints, void *buf, char *setpoint, boolean_t snapshot)
{
int err = ENOENT;
+ dsl_dir_t *target = dd;
objset_t *mos = dd->dd_pool->dp_meta_objset;
zfs_prop_t prop;
+ boolean_t inheritable;
+ boolean_t inheriting = B_FALSE;
+ char *inheritstr;
+ char *recvdstr;
- ASSERT(RW_LOCK_HELD(&dd->dd_pool->dp_config_rwlock));
+ ASSERT(dsl_pool_config_held(dd->dd_pool));
if (setpoint)
setpoint[0] = '\0';
prop = zfs_name_to_prop(propname);
+ inheritable = (prop == ZPROP_INVAL || zfs_prop_inheritable(prop));
+ inheritstr = kmem_asprintf("%s%s", propname, ZPROP_INHERIT_SUFFIX);
+ recvdstr = kmem_asprintf("%s%s", propname, ZPROP_RECVD_SUFFIX);
/*
- * Note: dd may be NULL, therefore we shouldn't dereference it
- * ouside this loop.
+ * Note: dd may become NULL, therefore we shouldn't dereference it
+ * after this loop.
*/
for (; dd != NULL; dd = dd->dd_parent) {
- ASSERT(RW_LOCK_HELD(&dd->dd_pool->dp_config_rwlock));
- err = zap_lookup(mos, dd->dd_phys->dd_props_zapobj,
- propname, intsz, numint, buf);
+ if (dd != target || snapshot) {
+ if (!inheritable)
+ break;
+ inheriting = B_TRUE;
+ }
+
+ /* Check for a local value. */
+ err = zap_lookup(mos, dd->dd_phys->dd_props_zapobj, propname,
+ intsz, numints, buf);
if (err != ENOENT) {
- if (setpoint)
+ if (setpoint != NULL && err == 0)
dsl_dir_name(dd, setpoint);
break;
}
/*
- * Break out of this loop for non-inheritable properties.
+ * Skip the check for a received value if there is an explicit
+ * inheritance entry.
*/
- if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop))
+ err = zap_contains(mos, dd->dd_phys->dd_props_zapobj,
+ inheritstr);
+ if (err != 0 && err != ENOENT)
break;
+
+ if (err == ENOENT) {
+ /* Check for a received value. */
+ err = zap_lookup(mos, dd->dd_phys->dd_props_zapobj,
+ recvdstr, intsz, numints, buf);
+ if (err != ENOENT) {
+ if (setpoint != NULL && err == 0) {
+ if (inheriting) {
+ dsl_dir_name(dd, setpoint);
+ } else {
+ (void) strcpy(setpoint,
+ ZPROP_SOURCE_VAL_RECVD);
+ }
+ }
+ break;
+ }
+ }
+
+ /*
+ * If we found an explicit inheritance entry, err is zero even
+ * though we haven't yet found the value, so reinitializing err
+ * at the end of the loop (instead of at the beginning) ensures
+ * that err has a valid post-loop value.
+ */
+ err = SET_ERROR(ENOENT);
}
+
if (err == ENOENT)
- err = dodefault(propname, intsz, numint, buf);
+ err = dodefault(propname, intsz, numints, buf);
+
+ strfree(inheritstr);
+ strfree(recvdstr);
return (err);
}
int
dsl_prop_get_ds(dsl_dataset_t *ds, const char *propname,
- int intsz, int numint, void *buf, char *setpoint)
+ int intsz, int numints, void *buf, char *setpoint)
{
- ASSERT(RW_LOCK_HELD(&ds->ds_dir->dd_pool->dp_config_rwlock));
+ zfs_prop_t prop = zfs_name_to_prop(propname);
+ boolean_t inheritable;
+ boolean_t snapshot;
+ uint64_t zapobj;
+
+ ASSERT(dsl_pool_config_held(ds->ds_dir->dd_pool));
+ inheritable = (prop == ZPROP_INVAL || zfs_prop_inheritable(prop));
+ snapshot = (ds->ds_phys != NULL && dsl_dataset_is_snapshot(ds));
+ zapobj = (ds->ds_phys == NULL ? 0 : ds->ds_phys->ds_props_obj);
+
+ if (zapobj != 0) {
+ objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;
+ int err;
+
+ ASSERT(snapshot);
- if (ds->ds_phys->ds_props_obj) {
- int err = zap_lookup(ds->ds_dir->dd_pool->dp_meta_objset,
- ds->ds_phys->ds_props_obj, propname, intsz, numint, buf);
+ /* Check for a local value. */
+ err = zap_lookup(mos, zapobj, propname, intsz, numints, buf);
if (err != ENOENT) {
- if (setpoint)
+ if (setpoint != NULL && err == 0)
dsl_dataset_name(ds, setpoint);
return (err);
}
+
+ /*
+ * Skip the check for a received value if there is an explicit
+ * inheritance entry.
+ */
+ if (inheritable) {
+ char *inheritstr = kmem_asprintf("%s%s", propname,
+ ZPROP_INHERIT_SUFFIX);
+ err = zap_contains(mos, zapobj, inheritstr);
+ strfree(inheritstr);
+ if (err != 0 && err != ENOENT)
+ return (err);
+ }
+
+ if (err == ENOENT) {
+ /* Check for a received value. */
+ char *recvdstr = kmem_asprintf("%s%s", propname,
+ ZPROP_RECVD_SUFFIX);
+ err = zap_lookup(mos, zapobj, recvdstr,
+ intsz, numints, buf);
+ strfree(recvdstr);
+ if (err != ENOENT) {
+ if (setpoint != NULL && err == 0)
+ (void) strcpy(setpoint,
+ ZPROP_SOURCE_VAL_RECVD);
+ return (err);
+ }
+ }
}
return (dsl_prop_get_dd(ds->ds_dir, propname,
- intsz, numint, buf, setpoint));
+ intsz, numints, buf, setpoint, snapshot));
}
/*
dsl_prop_changed_cb_t *callback, void *cbarg)
{
dsl_dir_t *dd = ds->ds_dir;
- dsl_pool_t *dp = dd->dd_pool;
uint64_t value;
dsl_prop_cb_record_t *cbr;
int err;
- int need_rwlock;
+ ASSERTV(dsl_pool_t *dp = dd->dd_pool);
- need_rwlock = !RW_WRITE_HELD(&dp->dp_config_rwlock);
- if (need_rwlock)
- rw_enter(&dp->dp_config_rwlock, RW_READER);
+ ASSERT(dsl_pool_config_held(dp));
- err = dsl_prop_get_ds(ds, propname, 8, 1, &value, NULL);
- if (err != 0) {
- if (need_rwlock)
- rw_exit(&dp->dp_config_rwlock);
+ err = dsl_prop_get_int_ds(ds, propname, &value);
+ if (err != 0)
return (err);
- }
- cbr = kmem_alloc(sizeof (dsl_prop_cb_record_t), KM_SLEEP);
+ cbr = kmem_alloc(sizeof (dsl_prop_cb_record_t), KM_PUSHPAGE);
cbr->cbr_ds = ds;
- cbr->cbr_propname = kmem_alloc(strlen(propname)+1, KM_SLEEP);
+ cbr->cbr_propname = kmem_alloc(strlen(propname)+1, KM_PUSHPAGE);
(void) strcpy((char *)cbr->cbr_propname, propname);
cbr->cbr_func = callback;
cbr->cbr_arg = cbarg;
mutex_exit(&dd->dd_lock);
cbr->cbr_func(cbr->cbr_arg, value);
-
- VERIFY(0 == dsl_dir_open_obj(dp, dd->dd_object,
- NULL, cbr, &dd));
- if (need_rwlock)
- rw_exit(&dp->dp_config_rwlock);
- /* Leave dir open until this callback is unregistered */
return (0);
}
dsl_prop_get(const char *dsname, const char *propname,
int intsz, int numints, void *buf, char *setpoint)
{
- dsl_dataset_t *ds;
- int err;
+ objset_t *os;
+ int error;
- err = dsl_dataset_hold(dsname, FTAG, &ds);
- if (err)
- return (err);
+ error = dmu_objset_hold(dsname, FTAG, &os);
+ if (error != 0)
+ return (error);
- rw_enter(&ds->ds_dir->dd_pool->dp_config_rwlock, RW_READER);
- err = dsl_prop_get_ds(ds, propname, intsz, numints, buf, setpoint);
- rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock);
+ error = dsl_prop_get_ds(dmu_objset_ds(os), propname,
+ intsz, numints, buf, setpoint);
- dsl_dataset_rele(ds, FTAG);
- return (err);
+ dmu_objset_rele(os, FTAG);
+ return (error);
}
/*
return (dsl_prop_get(ddname, propname, 8, 1, valuep, setpoint));
}
+int
+dsl_prop_get_int_ds(dsl_dataset_t *ds, const char *propname,
+ uint64_t *valuep)
+{
+ return (dsl_prop_get_ds(ds, propname, 8, 1, valuep, NULL));
+}
+
+/*
+ * Predict the effective value of the given special property if it were set with
+ * the given value and source. This is not a general purpose function. It exists
+ * only to handle the special requirements of the quota and reservation
+ * properties. The fact that these properties are non-inheritable greatly
+ * simplifies the prediction logic.
+ *
+ * Returns 0 on success, a positive error code on failure, or -1 if called with
+ * a property not handled by this function.
+ */
+int
+dsl_prop_predict(dsl_dir_t *dd, const char *propname,
+ zprop_source_t source, uint64_t value, uint64_t *newvalp)
+{
+ zfs_prop_t prop = zfs_name_to_prop(propname);
+ objset_t *mos;
+ uint64_t zapobj;
+ uint64_t version;
+ char *recvdstr;
+ int err = 0;
+
+ switch (prop) {
+ case ZFS_PROP_QUOTA:
+ case ZFS_PROP_RESERVATION:
+ case ZFS_PROP_REFQUOTA:
+ case ZFS_PROP_REFRESERVATION:
+ break;
+ default:
+ return (-1);
+ }
+
+ mos = dd->dd_pool->dp_meta_objset;
+ zapobj = dd->dd_phys->dd_props_zapobj;
+ recvdstr = kmem_asprintf("%s%s", propname, ZPROP_RECVD_SUFFIX);
+
+ version = spa_version(dd->dd_pool->dp_spa);
+ if (version < SPA_VERSION_RECVD_PROPS) {
+ if (source & ZPROP_SRC_NONE)
+ source = ZPROP_SRC_NONE;
+ else if (source & ZPROP_SRC_RECEIVED)
+ source = ZPROP_SRC_LOCAL;
+ }
+
+ switch ((int)source) {
+ case ZPROP_SRC_NONE:
+ /* Revert to the received value, if any. */
+ err = zap_lookup(mos, zapobj, recvdstr, 8, 1, newvalp);
+ if (err == ENOENT)
+ *newvalp = 0;
+ break;
+ case ZPROP_SRC_LOCAL:
+ *newvalp = value;
+ break;
+ case ZPROP_SRC_RECEIVED:
+ /*
+ * If there's no local setting, then the new received value will
+ * be the effective value.
+ */
+ err = zap_lookup(mos, zapobj, propname, 8, 1, newvalp);
+ if (err == ENOENT)
+ *newvalp = value;
+ break;
+ case (ZPROP_SRC_NONE | ZPROP_SRC_RECEIVED):
+ /*
+ * We're clearing the received value, so the local setting (if
+ * it exists) remains the effective value.
+ */
+ err = zap_lookup(mos, zapobj, propname, 8, 1, newvalp);
+ if (err == ENOENT)
+ *newvalp = 0;
+ break;
+ default:
+ panic("unexpected property source: %d", source);
+ }
+
+ strfree(recvdstr);
+
+ if (err == ENOENT)
+ return (0);
+
+ return (err);
+}
+
/*
* Unregister this callback. Return 0 on success, ENOENT if ddname is
- * invalid, ENOMSG if no matching callback registered.
+ * invalid, or ENOMSG if no matching callback registered.
*/
int
dsl_prop_unregister(dsl_dataset_t *ds, const char *propname,
if (cbr == NULL) {
mutex_exit(&dd->dd_lock);
- return (ENOMSG);
+ return (SET_ERROR(ENOMSG));
}
list_remove(&dd->dd_prop_cbs, cbr);
kmem_free((void*)cbr->cbr_propname, strlen(cbr->cbr_propname)+1);
kmem_free(cbr, sizeof (dsl_prop_cb_record_t));
- /* Clean up from dsl_prop_register */
- dsl_dir_close(dd, cbr);
return (0);
}
-/*
- * Return the number of callbacks that are registered for this dataset.
- */
-int
-dsl_prop_numcb(dsl_dataset_t *ds)
+boolean_t
+dsl_prop_hascb(dsl_dataset_t *ds)
{
dsl_dir_t *dd = ds->ds_dir;
+ boolean_t rv = B_FALSE;
dsl_prop_cb_record_t *cbr;
- int num = 0;
mutex_enter(&dd->dd_lock);
- for (cbr = list_head(&dd->dd_prop_cbs);
- cbr; cbr = list_next(&dd->dd_prop_cbs, cbr)) {
- if (cbr->cbr_ds == ds)
- num++;
+ for (cbr = list_head(&dd->dd_prop_cbs); cbr;
+ cbr = list_next(&dd->dd_prop_cbs, cbr)) {
+ if (cbr->cbr_ds == ds) {
+ rv = B_TRUE;
+ break;
+ }
}
mutex_exit(&dd->dd_lock);
+ return (rv);
+}
+
+/* ARGSUSED */
+static int
+dsl_prop_notify_all_cb(dsl_pool_t *dp, dsl_dataset_t *ds, void *arg)
+{
+ dsl_dir_t *dd = ds->ds_dir;
+ dsl_prop_cb_record_t *cbr;
+
+ mutex_enter(&dd->dd_lock);
+ for (cbr = list_head(&dd->dd_prop_cbs); cbr;
+ cbr = list_next(&dd->dd_prop_cbs, cbr)) {
+ uint64_t value;
- return (num);
+ if (dsl_prop_get_ds(cbr->cbr_ds, cbr->cbr_propname,
+ sizeof (value), 1, &value, NULL) == 0)
+ cbr->cbr_func(cbr->cbr_arg, value);
+ }
+ mutex_exit(&dd->dd_lock);
+
+ return (0);
+}
+
+/*
+ * Update all property values for ddobj & its descendants. This is used
+ * when renaming the dir.
+ */
+void
+dsl_prop_notify_all(dsl_dir_t *dd)
+{
+ dsl_pool_t *dp = dd->dd_pool;
+ ASSERT(RRW_WRITE_HELD(&dp->dp_config_rwlock));
+ (void) dmu_objset_find_dp(dp, dd->dd_object, dsl_prop_notify_all_cb,
+ NULL, DS_FIND_CHILDREN);
}
static void
zap_cursor_t zc;
zap_attribute_t *za;
int err;
- uint64_t dummyval;
- ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock));
- err = dsl_dir_open_obj(dp, ddobj, NULL, FTAG, &dd);
+ ASSERT(RRW_WRITE_HELD(&dp->dp_config_rwlock));
+ err = dsl_dir_hold_obj(dp, ddobj, NULL, FTAG, &dd);
if (err)
return;
* If the prop is set here, then this change is not
* being inherited here or below; stop the recursion.
*/
- err = zap_lookup(mos, dd->dd_phys->dd_props_zapobj, propname,
- 8, 1, &dummyval);
+ err = zap_contains(mos, dd->dd_phys->dd_props_zapobj, propname);
if (err == 0) {
- dsl_dir_close(dd, FTAG);
+ dsl_dir_rele(dd, FTAG);
return;
}
ASSERT3U(err, ==, ENOENT);
* If the property is set on this ds, then it is not
* inherited here; don't call the callback.
*/
- if (propobj && 0 == zap_lookup(mos, propobj, propname,
- 8, 1, &dummyval))
+ if (propobj && 0 == zap_contains(mos, propobj, propname))
continue;
cbr->cbr_func(cbr->cbr_arg, value);
}
mutex_exit(&dd->dd_lock);
- za = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP);
+ za = kmem_alloc(sizeof (zap_attribute_t), KM_PUSHPAGE);
for (zap_cursor_init(&zc, mos,
dd->dd_phys->dd_child_dir_zapobj);
zap_cursor_retrieve(&zc, za) == 0;
}
kmem_free(za, sizeof (zap_attribute_t));
zap_cursor_fini(&zc);
- dsl_dir_close(dd, FTAG);
+ dsl_dir_rele(dd, FTAG);
}
-struct prop_set_arg {
- const char *name;
- int intsz;
- int numints;
- const void *buf;
-};
-
-
-static void
-dsl_prop_set_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx)
+void
+dsl_prop_set_sync_impl(dsl_dataset_t *ds, const char *propname,
+ zprop_source_t source, int intsz, int numints, const void *value,
+ dmu_tx_t *tx)
{
- dsl_dataset_t *ds = arg1;
- struct prop_set_arg *psa = arg2;
objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset;
- uint64_t zapobj, intval;
+ uint64_t zapobj, intval, dummy;
int isint;
char valbuf[32];
- char *valstr;
+ const char *valstr = NULL;
+ char *inheritstr;
+ char *recvdstr;
+ char *tbuf = NULL;
+ int err;
+ uint64_t version = spa_version(ds->ds_dir->dd_pool->dp_spa);
- isint = (dodefault(psa->name, 8, 1, &intval) == 0);
+ isint = (dodefault(propname, 8, 1, &intval) == 0);
- if (dsl_dataset_is_snapshot(ds)) {
- ASSERT(spa_version(ds->ds_dir->dd_pool->dp_spa) >=
- SPA_VERSION_SNAP_PROPS);
+ if (ds->ds_phys != NULL && dsl_dataset_is_snapshot(ds)) {
+ ASSERT(version >= SPA_VERSION_SNAP_PROPS);
if (ds->ds_phys->ds_props_obj == 0) {
dmu_buf_will_dirty(ds->ds_dbuf, tx);
ds->ds_phys->ds_props_obj =
zapobj = ds->ds_dir->dd_phys->dd_props_zapobj;
}
- if (psa->numints == 0) {
- int err = zap_remove(mos, zapobj, psa->name, tx);
+ if (version < SPA_VERSION_RECVD_PROPS) {
+ if (source & ZPROP_SRC_NONE)
+ source = ZPROP_SRC_NONE;
+ else if (source & ZPROP_SRC_RECEIVED)
+ source = ZPROP_SRC_LOCAL;
+ }
+
+ inheritstr = kmem_asprintf("%s%s", propname, ZPROP_INHERIT_SUFFIX);
+ recvdstr = kmem_asprintf("%s%s", propname, ZPROP_RECVD_SUFFIX);
+
+ switch ((int)source) {
+ case ZPROP_SRC_NONE:
+ /*
+ * revert to received value, if any (inherit -S)
+ * - remove propname
+ * - remove propname$inherit
+ */
+ err = zap_remove(mos, zapobj, propname, tx);
+ ASSERT(err == 0 || err == ENOENT);
+ err = zap_remove(mos, zapobj, inheritstr, tx);
+ ASSERT(err == 0 || err == ENOENT);
+ break;
+ case ZPROP_SRC_LOCAL:
+ /*
+ * remove propname$inherit
+ * set propname -> value
+ */
+ err = zap_remove(mos, zapobj, inheritstr, tx);
ASSERT(err == 0 || err == ENOENT);
- if (isint) {
- VERIFY(0 == dsl_prop_get_ds(ds,
- psa->name, 8, 1, &intval, NULL));
+ VERIFY0(zap_update(mos, zapobj, propname,
+ intsz, numints, value, tx));
+ break;
+ case ZPROP_SRC_INHERITED:
+ /*
+ * explicitly inherit
+ * - remove propname
+ * - set propname$inherit
+ */
+ err = zap_remove(mos, zapobj, propname, tx);
+ ASSERT(err == 0 || err == ENOENT);
+ if (version >= SPA_VERSION_RECVD_PROPS &&
+ dsl_prop_get_int_ds(ds, ZPROP_HAS_RECVD, &dummy) == 0) {
+ dummy = 0;
+ VERIFY0(zap_update(mos, zapobj, inheritstr,
+ 8, 1, &dummy, tx));
}
- } else {
- VERIFY(0 == zap_update(mos, zapobj, psa->name,
- psa->intsz, psa->numints, psa->buf, tx));
- if (isint)
- intval = *(uint64_t *)psa->buf;
+ break;
+ case ZPROP_SRC_RECEIVED:
+ /*
+ * set propname$recvd -> value
+ */
+ err = zap_update(mos, zapobj, recvdstr,
+ intsz, numints, value, tx);
+ ASSERT(err == 0);
+ break;
+ case (ZPROP_SRC_NONE | ZPROP_SRC_LOCAL | ZPROP_SRC_RECEIVED):
+ /*
+ * clear local and received settings
+ * - remove propname
+ * - remove propname$inherit
+ * - remove propname$recvd
+ */
+ err = zap_remove(mos, zapobj, propname, tx);
+ ASSERT(err == 0 || err == ENOENT);
+ err = zap_remove(mos, zapobj, inheritstr, tx);
+ ASSERT(err == 0 || err == ENOENT);
+ /* FALLTHRU */
+ case (ZPROP_SRC_NONE | ZPROP_SRC_RECEIVED):
+ /*
+ * remove propname$recvd
+ */
+ err = zap_remove(mos, zapobj, recvdstr, tx);
+ ASSERT(err == 0 || err == ENOENT);
+ break;
+ default:
+ cmn_err(CE_PANIC, "unexpected property source: %d", source);
}
+ strfree(inheritstr);
+ strfree(recvdstr);
+
if (isint) {
- if (dsl_dataset_is_snapshot(ds)) {
+ VERIFY0(dsl_prop_get_int_ds(ds, propname, &intval));
+
+ if (ds->ds_phys != NULL && dsl_dataset_is_snapshot(ds)) {
dsl_prop_cb_record_t *cbr;
/*
* It's a snapshot; nothing can inherit this
for (cbr = list_head(&ds->ds_dir->dd_prop_cbs); cbr;
cbr = list_next(&ds->ds_dir->dd_prop_cbs, cbr)) {
if (cbr->cbr_ds == ds &&
- strcmp(cbr->cbr_propname, psa->name) == 0)
+ strcmp(cbr->cbr_propname, propname) == 0)
cbr->cbr_func(cbr->cbr_arg, intval);
}
mutex_exit(&ds->ds_dir->dd_lock);
} else {
dsl_prop_changed_notify(ds->ds_dir->dd_pool,
- ds->ds_dir->dd_object, psa->name, intval, TRUE);
+ ds->ds_dir->dd_object, propname, intval, TRUE);
}
- }
- if (isint) {
+
(void) snprintf(valbuf, sizeof (valbuf),
"%lld", (longlong_t)intval);
valstr = valbuf;
} else {
- valstr = (char *)psa->buf;
+ if (source == ZPROP_SRC_LOCAL) {
+ valstr = value;
+ } else {
+ tbuf = kmem_alloc(ZAP_MAXVALUELEN, KM_PUSHPAGE);
+ if (dsl_prop_get_ds(ds, propname, 1,
+ ZAP_MAXVALUELEN, tbuf, NULL) == 0)
+ valstr = tbuf;
+ }
}
- spa_history_internal_log((psa->numints == 0) ? LOG_DS_INHERIT :
- LOG_DS_PROPSET, ds->ds_dir->dd_pool->dp_spa, tx, cr,
- "%s=%s dataset = %llu", psa->name, valstr, ds->ds_object);
+
+ spa_history_log_internal_ds(ds, (source == ZPROP_SRC_NONE ||
+ source == ZPROP_SRC_INHERITED) ? "inherit" : "set", tx,
+ "%s=%s", propname, (valstr == NULL ? "" : valstr));
+
+ if (tbuf != NULL)
+ kmem_free(tbuf, ZAP_MAXVALUELEN);
}
-void
-dsl_prop_set_uint64_sync(dsl_dir_t *dd, const char *name, uint64_t val,
- cred_t *cr, dmu_tx_t *tx)
+int
+dsl_prop_set_int(const char *dsname, const char *propname,
+ zprop_source_t source, uint64_t value)
{
- objset_t *mos = dd->dd_pool->dp_meta_objset;
- uint64_t zapobj = dd->dd_phys->dd_props_zapobj;
+ nvlist_t *nvl = fnvlist_alloc();
+ int error;
- ASSERT(dmu_tx_is_syncing(tx));
-
- VERIFY(0 == zap_update(mos, zapobj, name, sizeof (val), 1, &val, tx));
+ fnvlist_add_uint64(nvl, propname, value);
+ error = dsl_props_set(dsname, source, nvl);
+ fnvlist_free(nvl);
+ return (error);
+}
- dsl_prop_changed_notify(dd->dd_pool, dd->dd_object, name, val, TRUE);
+int
+dsl_prop_set_string(const char *dsname, const char *propname,
+ zprop_source_t source, const char *value)
+{
+ nvlist_t *nvl = fnvlist_alloc();
+ int error;
- spa_history_internal_log(LOG_DS_PROPSET, dd->dd_pool->dp_spa, tx, cr,
- "%s=%llu dataset = %llu", name, (u_longlong_t)val,
- dd->dd_phys->dd_head_dataset_obj);
+ fnvlist_add_string(nvl, propname, value);
+ error = dsl_props_set(dsname, source, nvl);
+ fnvlist_free(nvl);
+ return (error);
}
int
-dsl_prop_set(const char *dsname, const char *propname,
- int intsz, int numints, const void *buf)
+dsl_prop_inherit(const char *dsname, const char *propname,
+ zprop_source_t source)
+{
+ nvlist_t *nvl = fnvlist_alloc();
+ int error;
+
+ fnvlist_add_boolean(nvl, propname);
+ error = dsl_props_set(dsname, source, nvl);
+ fnvlist_free(nvl);
+ return (error);
+}
+
+typedef struct dsl_props_set_arg {
+ const char *dpsa_dsname;
+ zprop_source_t dpsa_source;
+ nvlist_t *dpsa_props;
+} dsl_props_set_arg_t;
+
+static int
+dsl_props_set_check(void *arg, dmu_tx_t *tx)
{
+ dsl_props_set_arg_t *dpsa = arg;
+ dsl_pool_t *dp = dmu_tx_pool(tx);
dsl_dataset_t *ds;
+ uint64_t version;
+ nvpair_t *elem = NULL;
int err;
- struct prop_set_arg psa;
- /*
- * We must do these checks before we get to the syncfunc, since
- * it can't fail.
- */
- if (strlen(propname) >= ZAP_MAXNAMELEN)
- return (ENAMETOOLONG);
- if (intsz * numints >= ZAP_MAXVALUELEN)
- return (E2BIG);
-
- err = dsl_dataset_hold(dsname, FTAG, &ds);
- if (err)
+ err = dsl_dataset_hold(dp, dpsa->dpsa_dsname, FTAG, &ds);
+ if (err != 0)
return (err);
- if (dsl_dataset_is_snapshot(ds) &&
- spa_version(ds->ds_dir->dd_pool->dp_spa) < SPA_VERSION_SNAP_PROPS) {
+ version = spa_version(ds->ds_dir->dd_pool->dp_spa);
+ while ((elem = nvlist_next_nvpair(dpsa->dpsa_props, elem)) != NULL) {
+ if (strlen(nvpair_name(elem)) >= ZAP_MAXNAMELEN) {
+ dsl_dataset_rele(ds, FTAG);
+ return (SET_ERROR(ENAMETOOLONG));
+ }
+ if (nvpair_type(elem) == DATA_TYPE_STRING) {
+ char *valstr = fnvpair_value_string(elem);
+ if (strlen(valstr) >= (version <
+ SPA_VERSION_STMF_PROP ?
+ ZAP_OLDMAXVALUELEN : ZAP_MAXVALUELEN)) {
+ dsl_dataset_rele(ds, FTAG);
+ return (E2BIG);
+ }
+ }
+ }
+
+ if (dsl_dataset_is_snapshot(ds) && version < SPA_VERSION_SNAP_PROPS) {
dsl_dataset_rele(ds, FTAG);
- return (ENOTSUP);
+ return (SET_ERROR(ENOTSUP));
+ }
+ dsl_dataset_rele(ds, FTAG);
+ return (0);
+}
+
+void
+dsl_props_set_sync_impl(dsl_dataset_t *ds, zprop_source_t source,
+ nvlist_t *props, dmu_tx_t *tx)
+{
+ nvpair_t *elem = NULL;
+
+ while ((elem = nvlist_next_nvpair(props, elem)) != NULL) {
+ nvpair_t *pair = elem;
+
+ if (nvpair_type(pair) == DATA_TYPE_NVLIST) {
+ /*
+ * dsl_prop_get_all_impl() returns properties in this
+ * format.
+ */
+ nvlist_t *attrs = fnvpair_value_nvlist(pair);
+ pair = fnvlist_lookup_nvpair(attrs, ZPROP_VALUE);
+ }
+
+ if (nvpair_type(pair) == DATA_TYPE_STRING) {
+ const char *value = fnvpair_value_string(pair);
+ dsl_prop_set_sync_impl(ds, nvpair_name(pair),
+ source, 1, strlen(value) + 1, value, tx);
+ } else if (nvpair_type(pair) == DATA_TYPE_UINT64) {
+ uint64_t intval = fnvpair_value_uint64(pair);
+ dsl_prop_set_sync_impl(ds, nvpair_name(pair),
+ source, sizeof (intval), 1, &intval, tx);
+ } else if (nvpair_type(pair) == DATA_TYPE_BOOLEAN) {
+ dsl_prop_set_sync_impl(ds, nvpair_name(pair),
+ source, 0, 0, NULL, tx);
+ } else {
+ panic("invalid nvpair type");
+ }
}
+}
- psa.name = propname;
- psa.intsz = intsz;
- psa.numints = numints;
- psa.buf = buf;
- err = dsl_sync_task_do(ds->ds_dir->dd_pool,
- NULL, dsl_prop_set_sync, ds, &psa, 2);
+static void
+dsl_props_set_sync(void *arg, dmu_tx_t *tx)
+{
+ dsl_props_set_arg_t *dpsa = arg;
+ dsl_pool_t *dp = dmu_tx_pool(tx);
+ dsl_dataset_t *ds;
+ VERIFY0(dsl_dataset_hold(dp, dpsa->dpsa_dsname, FTAG, &ds));
+ dsl_props_set_sync_impl(ds, dpsa->dpsa_source, dpsa->dpsa_props, tx);
dsl_dataset_rele(ds, FTAG);
- return (err);
}
/*
- * Iterate over all properties for this dataset and return them in an nvlist.
+ * All-or-nothing; if any prop can't be set, nothing will be modified.
*/
int
-dsl_prop_get_all(objset_t *os, nvlist_t **nvp, boolean_t local)
+dsl_props_set(const char *dsname, zprop_source_t source, nvlist_t *props)
{
- dsl_dataset_t *ds = os->os->os_dsl_dataset;
- dsl_dir_t *dd = ds->ds_dir;
- boolean_t snapshot = dsl_dataset_is_snapshot(ds);
- int err = 0;
- dsl_pool_t *dp = dd->dd_pool;
- objset_t *mos = dp->dp_meta_objset;
- uint64_t propobj = ds->ds_phys->ds_props_obj;
+ dsl_props_set_arg_t dpsa;
+ int nblks = 0;
- VERIFY(nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP) == 0);
+ dpsa.dpsa_dsname = dsname;
+ dpsa.dpsa_source = source;
+ dpsa.dpsa_props = props;
- if (local && snapshot && !propobj)
- return (0);
+ /*
+ * If the source includes NONE, then we will only be removing entries
+ * from the ZAP object. In that case don't check for ENOSPC.
+ */
+ if ((source & ZPROP_SRC_NONE) == 0)
+ nblks = 2 * fnvlist_num_pairs(props);
- rw_enter(&dp->dp_config_rwlock, RW_READER);
- while (dd != NULL) {
- char setpoint[MAXNAMELEN];
- zap_cursor_t zc;
- zap_attribute_t za;
- dsl_dir_t *dd_next;
+ return (dsl_sync_task(dsname, dsl_props_set_check, dsl_props_set_sync,
+ &dpsa, nblks));
+}
- if (propobj) {
- dsl_dataset_name(ds, setpoint);
- dd_next = dd;
- } else {
- dsl_dir_name(dd, setpoint);
- propobj = dd->dd_phys->dd_props_zapobj;
- dd_next = dd->dd_parent;
- }
+typedef enum dsl_prop_getflags {
+ DSL_PROP_GET_INHERITING = 0x1, /* searching parent of target ds */
+ DSL_PROP_GET_SNAPSHOT = 0x2, /* snapshot dataset */
+ DSL_PROP_GET_LOCAL = 0x4, /* local properties */
+ DSL_PROP_GET_RECEIVED = 0x8 /* received properties */
+} dsl_prop_getflags_t;
+
+static int
+dsl_prop_get_all_impl(objset_t *mos, uint64_t propobj,
+ const char *setpoint, dsl_prop_getflags_t flags, nvlist_t *nv)
+{
+ zap_cursor_t zc;
+ zap_attribute_t za;
+ int err = 0;
- for (zap_cursor_init(&zc, mos, propobj);
- (err = zap_cursor_retrieve(&zc, &za)) == 0;
- zap_cursor_advance(&zc)) {
- nvlist_t *propval;
- zfs_prop_t prop = zfs_name_to_prop(za.za_name);
+ for (zap_cursor_init(&zc, mos, propobj);
+ (err = zap_cursor_retrieve(&zc, &za)) == 0;
+ zap_cursor_advance(&zc)) {
+ nvlist_t *propval;
+ zfs_prop_t prop;
+ char buf[ZAP_MAXNAMELEN];
+ char *valstr;
+ const char *suffix;
+ const char *propname;
+ const char *source;
- /* Skip non-inheritable properties. */
- if (prop != ZPROP_INVAL &&
- !zfs_prop_inheritable(prop) &&
- (dd != ds->ds_dir || (snapshot && dd != dd_next)))
- continue;
+ suffix = strchr(za.za_name, '$');
- /* Skip properties not valid for this type. */
- if (snapshot && prop != ZPROP_INVAL &&
- !zfs_prop_valid_for_type(prop, ZFS_TYPE_SNAPSHOT))
+ if (suffix == NULL) {
+ /*
+ * Skip local properties if we only want received
+ * properties.
+ */
+ if (flags & DSL_PROP_GET_RECEIVED)
continue;
- /* Skip properties already defined */
- if (nvlist_lookup_nvlist(*nvp, za.za_name,
- &propval) == 0)
+ propname = za.za_name;
+ source = setpoint;
+ } else if (strcmp(suffix, ZPROP_INHERIT_SUFFIX) == 0) {
+ /* Skip explicitly inherited entries. */
+ continue;
+ } else if (strcmp(suffix, ZPROP_RECVD_SUFFIX) == 0) {
+ if (flags & DSL_PROP_GET_LOCAL)
continue;
- VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME,
- KM_SLEEP) == 0);
- if (za.za_integer_length == 1) {
- /*
- * String property
- */
- char *tmp = kmem_alloc(za.za_num_integers,
- KM_SLEEP);
- err = zap_lookup(mos, propobj,
- za.za_name, 1, za.za_num_integers, tmp);
- if (err != 0) {
- kmem_free(tmp, za.za_num_integers);
+ (void) strncpy(buf, za.za_name, (suffix - za.za_name));
+ buf[suffix - za.za_name] = '\0';
+ propname = buf;
+
+ if (!(flags & DSL_PROP_GET_RECEIVED)) {
+ /* Skip if locally overridden. */
+ err = zap_contains(mos, propobj, propname);
+ if (err == 0)
+ continue;
+ if (err != ENOENT)
+ break;
+
+ /* Skip if explicitly inherited. */
+ valstr = kmem_asprintf("%s%s", propname,
+ ZPROP_INHERIT_SUFFIX);
+ err = zap_contains(mos, propobj, valstr);
+ strfree(valstr);
+ if (err == 0)
+ continue;
+ if (err != ENOENT)
break;
- }
- VERIFY(nvlist_add_string(propval, ZPROP_VALUE,
- tmp) == 0);
- kmem_free(tmp, za.za_num_integers);
- } else {
- /*
- * Integer property
- */
- ASSERT(za.za_integer_length == 8);
- (void) nvlist_add_uint64(propval, ZPROP_VALUE,
- za.za_first_integer);
}
- VERIFY(nvlist_add_string(propval, ZPROP_SOURCE,
- setpoint) == 0);
- VERIFY(nvlist_add_nvlist(*nvp, za.za_name,
- propval) == 0);
- nvlist_free(propval);
+ source = ((flags & DSL_PROP_GET_INHERITING) ?
+ setpoint : ZPROP_SOURCE_VAL_RECVD);
+ } else {
+ /*
+ * For backward compatibility, skip suffixes we don't
+ * recognize.
+ */
+ continue;
}
- zap_cursor_fini(&zc);
- if (err != ENOENT)
- break;
+ prop = zfs_name_to_prop(propname);
+
+ /* Skip non-inheritable properties. */
+ if ((flags & DSL_PROP_GET_INHERITING) && prop != ZPROP_INVAL &&
+ !zfs_prop_inheritable(prop))
+ continue;
+
+ /* Skip properties not valid for this type. */
+ if ((flags & DSL_PROP_GET_SNAPSHOT) && prop != ZPROP_INVAL &&
+ !zfs_prop_valid_for_type(prop, ZFS_TYPE_SNAPSHOT))
+ continue;
+
+ /* Skip properties already defined. */
+ if (nvlist_exists(nv, propname))
+ continue;
+
+ VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0);
+ if (za.za_integer_length == 1) {
+ /*
+ * String property
+ */
+ char *tmp = kmem_alloc(za.za_num_integers,
+ KM_SLEEP);
+ err = zap_lookup(mos, propobj,
+ za.za_name, 1, za.za_num_integers, tmp);
+ if (err != 0) {
+ kmem_free(tmp, za.za_num_integers);
+ break;
+ }
+ VERIFY(nvlist_add_string(propval, ZPROP_VALUE,
+ tmp) == 0);
+ kmem_free(tmp, za.za_num_integers);
+ } else {
+ /*
+ * Integer property
+ */
+ ASSERT(za.za_integer_length == 8);
+ (void) nvlist_add_uint64(propval, ZPROP_VALUE,
+ za.za_first_integer);
+ }
+
+ VERIFY(nvlist_add_string(propval, ZPROP_SOURCE, source) == 0);
+ VERIFY(nvlist_add_nvlist(nv, propname, propval) == 0);
+ nvlist_free(propval);
+ }
+ zap_cursor_fini(&zc);
+ if (err == ENOENT)
err = 0;
- /*
- * If we are just after the props that have been set
- * locally, then we are done after the first iteration.
- */
- if (local)
- break;
- dd = dd_next;
- propobj = 0;
+ return (err);
+}
+
+/*
+ * Iterate over all properties for this dataset and return them in an nvlist.
+ */
+static int
+dsl_prop_get_all_ds(dsl_dataset_t *ds, nvlist_t **nvp,
+ dsl_prop_getflags_t flags)
+{
+ dsl_dir_t *dd = ds->ds_dir;
+ dsl_pool_t *dp = dd->dd_pool;
+ objset_t *mos = dp->dp_meta_objset;
+ int err = 0;
+ char setpoint[MAXNAMELEN];
+
+ VERIFY(nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP) == 0);
+
+ if (dsl_dataset_is_snapshot(ds))
+ flags |= DSL_PROP_GET_SNAPSHOT;
+
+ ASSERT(dsl_pool_config_held(dp));
+
+ if (ds->ds_phys->ds_props_obj != 0) {
+ ASSERT(flags & DSL_PROP_GET_SNAPSHOT);
+ dsl_dataset_name(ds, setpoint);
+ err = dsl_prop_get_all_impl(mos, ds->ds_phys->ds_props_obj,
+ setpoint, flags, *nvp);
+ if (err)
+ goto out;
}
- rw_exit(&dp->dp_config_rwlock);
+ for (; dd != NULL; dd = dd->dd_parent) {
+ if (dd != ds->ds_dir || (flags & DSL_PROP_GET_SNAPSHOT)) {
+ if (flags & (DSL_PROP_GET_LOCAL |
+ DSL_PROP_GET_RECEIVED))
+ break;
+ flags |= DSL_PROP_GET_INHERITING;
+ }
+ dsl_dir_name(dd, setpoint);
+ err = dsl_prop_get_all_impl(mos, dd->dd_phys->dd_props_zapobj,
+ setpoint, flags, *nvp);
+ if (err)
+ break;
+ }
+out:
return (err);
}
+boolean_t
+dsl_prop_get_hasrecvd(const char *dsname)
+{
+ uint64_t dummy;
+
+ return (0 ==
+ dsl_prop_get_integer(dsname, ZPROP_HAS_RECVD, &dummy, NULL));
+}
+
+static int
+dsl_prop_set_hasrecvd_impl(const char *dsname, zprop_source_t source)
+{
+ uint64_t version;
+ spa_t *spa;
+ int error = 0;
+
+ VERIFY0(spa_open(dsname, &spa, FTAG));
+ version = spa_version(spa);
+ spa_close(spa, FTAG);
+
+ if (version >= SPA_VERSION_RECVD_PROPS)
+ error = dsl_prop_set_int(dsname, ZPROP_HAS_RECVD, source, 0);
+ return (error);
+}
+
+/*
+ * Call after successfully receiving properties to ensure that only the first
+ * receive on or after SPA_VERSION_RECVD_PROPS blows away local properties.
+ */
+int
+dsl_prop_set_hasrecvd(const char *dsname)
+{
+ int error = 0;
+ if (!dsl_prop_get_hasrecvd(dsname))
+ error = dsl_prop_set_hasrecvd_impl(dsname, ZPROP_SRC_LOCAL);
+ return (error);
+}
+
+void
+dsl_prop_unset_hasrecvd(const char *dsname)
+{
+ VERIFY0(dsl_prop_set_hasrecvd_impl(dsname, ZPROP_SRC_NONE));
+}
+
+int
+dsl_prop_get_all(objset_t *os, nvlist_t **nvp)
+{
+ return (dsl_prop_get_all_ds(os->os_dsl_dataset, nvp, 0));
+}
+
+int
+dsl_prop_get_received(const char *dsname, nvlist_t **nvp)
+{
+ objset_t *os;
+ int error;
+
+ /*
+ * Received properties are not distinguishable from local properties
+ * until the dataset has received properties on or after
+ * SPA_VERSION_RECVD_PROPS.
+ */
+ dsl_prop_getflags_t flags = (dsl_prop_get_hasrecvd(dsname) ?
+ DSL_PROP_GET_RECEIVED : DSL_PROP_GET_LOCAL);
+
+ error = dmu_objset_hold(dsname, FTAG, &os);
+ if (error != 0)
+ return (error);
+ error = dsl_prop_get_all_ds(os->os_dsl_dataset, nvp, flags);
+ dmu_objset_rele(os, FTAG);
+ return (error);
+}
+
void
dsl_prop_nvlist_add_uint64(nvlist_t *nv, zfs_prop_t prop, uint64_t value)
{
nvlist_t *propval;
+ const char *propname = zfs_prop_to_name(prop);
+ uint64_t default_value;
+
+ if (nvlist_lookup_nvlist(nv, propname, &propval) == 0) {
+ VERIFY(nvlist_add_uint64(propval, ZPROP_VALUE, value) == 0);
+ return;
+ }
VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0);
VERIFY(nvlist_add_uint64(propval, ZPROP_VALUE, value) == 0);
- VERIFY(nvlist_add_nvlist(nv, zfs_prop_to_name(prop), propval) == 0);
+ /* Indicate the default source if we can. */
+ if (dodefault(propname, 8, 1, &default_value) == 0 &&
+ value == default_value) {
+ VERIFY(nvlist_add_string(propval, ZPROP_SOURCE, "") == 0);
+ }
+ VERIFY(nvlist_add_nvlist(nv, propname, propval) == 0);
nvlist_free(propval);
}
dsl_prop_nvlist_add_string(nvlist_t *nv, zfs_prop_t prop, const char *value)
{
nvlist_t *propval;
+ const char *propname = zfs_prop_to_name(prop);
+
+ if (nvlist_lookup_nvlist(nv, propname, &propval) == 0) {
+ VERIFY(nvlist_add_string(propval, ZPROP_VALUE, value) == 0);
+ return;
+ }
VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0);
VERIFY(nvlist_add_string(propval, ZPROP_VALUE, value) == 0);
- VERIFY(nvlist_add_nvlist(nv, zfs_prop_to_name(prop), propval) == 0);
+ VERIFY(nvlist_add_nvlist(nv, propname, propval) == 0);
nvlist_free(propval);
}
+
+#if defined(_KERNEL) && defined(HAVE_SPL)
+EXPORT_SYMBOL(dsl_prop_register);
+EXPORT_SYMBOL(dsl_prop_unregister);
+EXPORT_SYMBOL(dsl_prop_get);
+EXPORT_SYMBOL(dsl_prop_get_integer);
+EXPORT_SYMBOL(dsl_prop_get_all);
+EXPORT_SYMBOL(dsl_prop_get_received);
+EXPORT_SYMBOL(dsl_prop_get_ds);
+EXPORT_SYMBOL(dsl_prop_get_int_ds);
+EXPORT_SYMBOL(dsl_prop_get_dd);
+EXPORT_SYMBOL(dsl_props_set);
+EXPORT_SYMBOL(dsl_prop_set_int);
+EXPORT_SYMBOL(dsl_prop_set_string);
+EXPORT_SYMBOL(dsl_prop_inherit);
+EXPORT_SYMBOL(dsl_prop_predict);
+EXPORT_SYMBOL(dsl_prop_nvlist_add_uint64);
+EXPORT_SYMBOL(dsl_prop_nvlist_add_string);
+#endif
projects / mirror_zfs-debian.git / blobdiff