*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2012, 2014 by Delphix. All rights reserved.
+ * Copyright (c) 2012, 2018 by Delphix. All rights reserved.
*/
/* Portions Copyright 2007 Jeremy Teo */
#include <sys/types.h>
#include <sys/param.h>
#include <sys/time.h>
-#include <sys/systm.h>
#include <sys/sysmacros.h>
-#include <sys/resource.h>
#include <sys/mntent.h>
-#include <sys/mkdev.h>
#include <sys/u8_textprep.h>
#include <sys/dsl_dataset.h>
#include <sys/vfs.h>
-#include <sys/vfs_opreg.h>
#include <sys/vnode.h>
#include <sys/file.h>
#include <sys/kmem.h>
#include <sys/errno.h>
-#include <sys/unistd.h>
#include <sys/mode.h>
#include <sys/atomic.h>
-#include <vm/pvn.h>
-#include "fs/fs_subr.h"
#include <sys/zfs_dir.h>
#include <sys/zfs_acl.h>
#include <sys/zfs_ioctl.h>
#include <sys/zfs_ctldir.h>
#include <sys/dnode.h>
#include <sys/fs/zfs.h>
-#include <sys/kidmap.h>
#include <sys/zpl.h>
#endif /* _KERNEL */
#include "zfs_prop.h"
#include "zfs_comutil.h"
-/*
- * Define ZNODE_STATS to turn on statistic gathering. By default, it is only
- * turned on when DEBUG is also defined.
- */
-#ifdef DEBUG
-#define ZNODE_STATS
-#endif /* DEBUG */
-
-#ifdef ZNODE_STATS
-#define ZNODE_STAT_ADD(stat) ((stat)++)
-#else
-#define ZNODE_STAT_ADD(stat) /* nothing */
-#endif /* ZNODE_STATS */
-
/*
* Functions needed for userland (ie: libzpool) are not put under
* #ifdef_KERNEL; the rest of the functions have dependencies
static kmem_cache_t *znode_hold_cache = NULL;
unsigned int zfs_object_mutex_size = ZFS_OBJ_MTX_SZ;
+/*
+ * This is used by the test suite so that it can delay znodes from being
+ * freed in order to inspect the unlinked set.
+ */
+int zfs_unlink_suspend_progress = 0;
+
+/*
+ * This callback is invoked when acquiring a RL_WRITER or RL_APPEND lock on
+ * z_rangelock. It will modify the offset and length of the lock to reflect
+ * znode-specific information, and convert RL_APPEND to RL_WRITER. This is
+ * called with the rangelock_t's rl_lock held, which avoids races.
+ */
+static void
+zfs_rangelock_cb(locked_range_t *new, void *arg)
+{
+ znode_t *zp = arg;
+
+ /*
+ * If in append mode, convert to writer and lock starting at the
+ * current end of file.
+ */
+ if (new->lr_type == RL_APPEND) {
+ new->lr_offset = zp->z_size;
+ new->lr_type = RL_WRITER;
+ }
+
+ /*
+ * If we need to grow the block size then lock the whole file range.
+ */
+ uint64_t end_size = MAX(zp->z_size, new->lr_offset + new->lr_length);
+ if (end_size > zp->z_blksz && (!ISP2(zp->z_blksz) ||
+ zp->z_blksz < ZTOZSB(zp)->z_max_blksz)) {
+ new->lr_offset = 0;
+ new->lr_length = UINT64_MAX;
+ }
+}
+
/*ARGSUSED*/
static int
zfs_znode_cache_constructor(void *buf, void *arg, int kmflags)
mutex_init(&zp->z_acl_lock, NULL, MUTEX_DEFAULT, NULL);
rw_init(&zp->z_xattr_lock, NULL, RW_DEFAULT, NULL);
- zfs_rlock_init(&zp->z_range_lock);
+ rangelock_init(&zp->z_rangelock, zfs_rangelock_cb, zp);
zp->z_dirlocks = NULL;
zp->z_acl_cached = NULL;
rw_destroy(&zp->z_name_lock);
mutex_destroy(&zp->z_acl_lock);
rw_destroy(&zp->z_xattr_lock);
- zfs_rlock_destroy(&zp->z_range_lock);
+ rangelock_fini(&zp->z_rangelock);
ASSERT(zp->z_dirlocks == NULL);
ASSERT(zp->z_acl_cached == NULL);
znode_hold_t *zh = buf;
mutex_init(&zh->zh_lock, NULL, MUTEX_DEFAULT, NULL);
- refcount_create(&zh->zh_refcount);
+ zfs_refcount_create(&zh->zh_refcount);
zh->zh_obj = ZFS_NO_OBJECT;
return (0);
znode_hold_t *zh = buf;
mutex_destroy(&zh->zh_lock);
- refcount_destroy(&zh->zh_refcount);
+ zfs_refcount_destroy(&zh->zh_refcount);
}
void
ASSERT3U(zh->zh_obj, ==, obj);
found = B_TRUE;
}
- refcount_add(&zh->zh_refcount, NULL);
+ zfs_refcount_add(&zh->zh_refcount, NULL);
mutex_exit(&zfsvfs->z_hold_locks[i]);
if (found == B_TRUE)
kmem_cache_free(znode_hold_cache, zh_new);
ASSERT(MUTEX_NOT_HELD(&zh->zh_lock));
- ASSERT3S(refcount_count(&zh->zh_refcount), >, 0);
+ ASSERT3S(zfs_refcount_count(&zh->zh_refcount), >, 0);
mutex_enter(&zh->zh_lock);
return (zh);
boolean_t remove = B_FALSE;
ASSERT(zfs_znode_held(zfsvfs, zh->zh_obj));
- ASSERT3S(refcount_count(&zh->zh_refcount), >, 0);
+ ASSERT3S(zfs_refcount_count(&zh->zh_refcount), >, 0);
mutex_exit(&zh->zh_lock);
mutex_enter(&zfsvfs->z_hold_locks[i]);
- if (refcount_remove(&zh->zh_refcount, NULL) == 0) {
+ if (zfs_refcount_remove(&zh->zh_refcount, NULL) == 0) {
avl_remove(&zfsvfs->z_hold_trees[i], zh);
remove = B_TRUE;
}
kmem_cache_free(znode_hold_cache, zh);
}
-int
-zfs_create_share_dir(zfsvfs_t *zfsvfs, dmu_tx_t *tx)
-{
-#ifdef HAVE_SMB_SHARE
- zfs_acl_ids_t acl_ids;
- vattr_t vattr;
- znode_t *sharezp;
- vnode_t *vp;
- znode_t *zp;
- int error;
-
- vattr.va_mask = AT_MODE|AT_UID|AT_GID|AT_TYPE;
- vattr.va_mode = S_IFDIR | 0555;
- vattr.va_uid = crgetuid(kcred);
- vattr.va_gid = crgetgid(kcred);
-
- sharezp = kmem_cache_alloc(znode_cache, KM_SLEEP);
- sharezp->z_moved = 0;
- sharezp->z_unlinked = 0;
- sharezp->z_atime_dirty = 0;
- sharezp->z_zfsvfs = zfsvfs;
- sharezp->z_is_sa = zfsvfs->z_use_sa;
-
- vp = ZTOV(sharezp);
- vn_reinit(vp);
- vp->v_type = VDIR;
-
- VERIFY(0 == zfs_acl_ids_create(sharezp, IS_ROOT_NODE, &vattr,
- kcred, NULL, &acl_ids));
- zfs_mknode(sharezp, &vattr, tx, kcred, IS_ROOT_NODE, &zp, &acl_ids);
- ASSERT3P(zp, ==, sharezp);
- ASSERT(!vn_in_dnlc(ZTOV(sharezp))); /* not valid to move */
- POINTER_INVALIDATE(&sharezp->z_zfsvfs);
- error = zap_add(zfsvfs->z_os, MASTER_NODE_OBJ,
- ZFS_SHARES_DIR, 8, 1, &sharezp->z_id, tx);
- zfsvfs->z_shares_dir = sharezp->z_id;
-
- zfs_acl_ids_free(&acl_ids);
- // ZTOV(sharezp)->v_count = 0;
- sa_handle_destroy(sharezp->z_sa_hdl);
- kmem_cache_free(znode_cache, sharezp);
-
- return (error);
-#else
- return (0);
-#endif /* HAVE_SMB_SHARE */
-}
-
static void
zfs_znode_sa_init(zfsvfs_t *zfsvfs, znode_t *zp,
dmu_buf_t *db, dmu_object_type_t obj_type, sa_handle_t *sa_hdl)
uint64_t links;
uint64_t z_uid, z_gid;
uint64_t atime[2], mtime[2], ctime[2];
+ uint64_t projid = ZFS_DEFAULT_PROJID;
sa_bulk_attr_t bulk[11];
int count = 0;
zp->z_is_mapped = B_FALSE;
zp->z_is_ctldir = B_FALSE;
zp->z_is_stale = B_FALSE;
- zp->z_range_lock.zr_size = &zp->z_size;
- zp->z_range_lock.zr_blksz = &zp->z_blksz;
- zp->z_range_lock.zr_max_blksz = &ZTOZSB(zp)->z_max_blksz;
zfs_znode_sa_init(zfsvfs, zp, db, obj_type, hdl);
SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL, &mtime, 16);
SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL, &ctime, 16);
- if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count) != 0 || tmp_gen == 0) {
+ if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count) != 0 || tmp_gen == 0 ||
+ (dmu_objset_projectquota_enabled(zfsvfs->z_os) &&
+ (zp->z_pflags & ZFS_PROJID) &&
+ sa_lookup(zp->z_sa_hdl, SA_ZPL_PROJID(zfsvfs), &projid, 8) != 0)) {
if (hdl == NULL)
sa_handle_destroy(zp->z_sa_hdl);
zp->z_sa_hdl = NULL;
goto error;
}
+ zp->z_projid = projid;
zp->z_mode = ip->i_mode = mode;
ip->i_generation = (uint32_t)tmp_gen;
ip->i_blkbits = SPA_MINBLOCKSHIFT;
{
uint64_t crtime[2], atime[2], mtime[2], ctime[2];
uint64_t mode, size, links, parent, pflags;
- uint64_t dzp_pflags = 0;
+ uint64_t projid = ZFS_DEFAULT_PROJID;
uint64_t rdev = 0;
zfsvfs_t *zfsvfs = ZTOZSB(dzp);
dmu_buf_t *db;
- timestruc_t now;
+ inode_timespec_t now;
uint64_t gen, obj;
int bonuslen;
int dnodesize;
}
zh = zfs_znode_hold_enter(zfsvfs, obj);
- VERIFY(0 == sa_buf_hold(zfsvfs->z_os, obj, NULL, &db));
+ VERIFY0(sa_buf_hold(zfsvfs->z_os, obj, NULL, &db));
/*
* If this is the root, fix up the half-initialized parent pointer
*/
if (flag & IS_ROOT_NODE) {
dzp->z_id = obj;
- } else {
- dzp_pflags = dzp->z_pflags;
}
/*
* If parent is an xattr, so am I.
*/
- if (dzp_pflags & ZFS_XATTR) {
+ if (dzp->z_pflags & ZFS_XATTR) {
flag |= IS_XATTR;
}
if (flag & IS_XATTR)
pflags |= ZFS_XATTR;
+ if (S_ISREG(vap->va_mode) || S_ISDIR(vap->va_mode)) {
+ /*
+ * With ZFS_PROJID flag, we can easily know whether there is
+ * project ID stored on disk or not. See zfs_space_delta_cb().
+ */
+ if (obj_type != DMU_OT_ZNODE &&
+ dmu_objset_projectquota_enabled(zfsvfs->z_os))
+ pflags |= ZFS_PROJID;
+
+ /*
+ * Inherit project ID from parent if required.
+ */
+ projid = zfs_inherit_projid(dzp);
+ if (dzp->z_pflags & ZFS_PROJINHERIT)
+ pflags |= ZFS_PROJINHERIT;
+ }
+
/*
* No execs denied will be deterimed when zfs_mode_compute() is called.
*/
if (obj_type == DMU_OT_ZNODE) {
SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_XATTR(zfsvfs), NULL,
&empty_xattr, 8);
+ } else if (dmu_objset_projectquota_enabled(zfsvfs->z_os) &&
+ pflags & ZFS_PROJID) {
+ SA_ADD_BULK_ATTR(sa_attrs, cnt, SA_ZPL_PROJID(zfsvfs),
+ NULL, &projid, 8);
}
if (obj_type == DMU_OT_ZNODE ||
(S_ISBLK(vap->va_mode) || S_ISCHR(vap->va_mode))) {
(*zpp)->z_pflags = pflags;
(*zpp)->z_mode = ZTOI(*zpp)->i_mode = mode;
(*zpp)->z_dnodesize = dnodesize;
+ (*zpp)->z_projid = projid;
if (obj_type == DMU_OT_ZNODE ||
acl_ids->z_aclp->z_version < ZFS_ACL_VERSION_FUID) {
zp->z_pflags, tx);
XVA_SET_RTN(xvap, XAT_SPARSE);
}
+ if (XVA_ISSET_REQ(xvap, XAT_PROJINHERIT)) {
+ ZFS_ATTR_SET(zp, ZFS_PROJINHERIT, xoap->xoa_projinherit,
+ zp->z_pflags, tx);
+ XVA_SET_RTN(xvap, XAT_PROJINHERIT);
+ }
if (update_inode)
zfs_set_inode_flags(zp, ZTOI(zp));
uint64_t gen;
uint64_t z_uid, z_gid;
uint64_t atime[2], mtime[2], ctime[2];
+ uint64_t projid = ZFS_DEFAULT_PROJID;
znode_hold_t *zh;
/*
return (SET_ERROR(EIO));
}
+ if (dmu_objset_projectquota_enabled(zfsvfs->z_os)) {
+ err = sa_lookup(zp->z_sa_hdl, SA_ZPL_PROJID(zfsvfs),
+ &projid, 8);
+ if (err != 0 && err != ENOENT) {
+ zfs_znode_dmu_fini(zp);
+ zfs_znode_hold_exit(zfsvfs, zh);
+ return (SET_ERROR(err));
+ }
+ }
+
+ zp->z_projid = projid;
zp->z_mode = ZTOI(zp)->i_mode = mode;
zfs_uid_write(ZTOI(zp), z_uid);
zfs_gid_write(ZTOI(zp), z_gid);
return (SET_ERROR(EIO));
}
- zp->z_unlinked = (ZTOI(zp)->i_nlink == 0);
set_nlink(ZTOI(zp), (uint32_t)links);
zfs_set_inode_flags(zp, ZTOI(zp));
zp->z_atime_dirty = 0;
zfs_inode_update(zp);
+ /*
+ * If the file has zero links, then it has been unlinked on the send
+ * side and it must be in the received unlinked set.
+ * We call zfs_znode_dmu_fini() now to prevent any accesses to the
+ * stale data and to prevent automatical removal of the file in
+ * zfs_zinactive(). The file will be removed either when it is removed
+ * on the send side and the next incremental stream is received or
+ * when the unlinked set gets processed.
+ */
+ zp->z_unlinked = (ZTOI(zp)->i_nlink == 0);
+ if (zp->z_unlinked)
+ zfs_znode_dmu_fini(zp);
+
zfs_znode_hold_exit(zfsvfs, zh);
return (0);
mutex_enter(&zp->z_lock);
/*
- * If this was the last reference to a file with no links,
- * remove the file from the file system.
+ * If this was the last reference to a file with no links, remove
+ * the file from the file system unless the file system is mounted
+ * read-only. That can happen, for example, if the file system was
+ * originally read-write, the file was opened, then unlinked and
+ * the file system was made read-only before the file was finally
+ * closed. The file will remain in the unlinked set.
*/
if (zp->z_unlinked) {
- mutex_exit(&zp->z_lock);
- zfs_znode_hold_exit(zfsvfs, zh);
- zfs_rmnode(zp);
- return;
+ ASSERT(!zfsvfs->z_issnap);
+ if (!zfs_is_readonly(zfsvfs) && !zfs_unlink_suspend_progress) {
+ mutex_exit(&zp->z_lock);
+ zfs_znode_hold_exit(zfsvfs, zh);
+ zfs_rmnode(zp);
+ return;
+ }
}
mutex_exit(&zp->z_lock);
zfs_tstamp_update_setup(znode_t *zp, uint_t flag, uint64_t mtime[2],
uint64_t ctime[2])
{
- timestruc_t now;
+ inode_timespec_t now;
gethrestime(&now);
{
zfsvfs_t *zfsvfs = ZTOZSB(zp);
dmu_tx_t *tx;
- rl_t *rl;
+ locked_range_t *lr;
uint64_t newblksz;
int error;
/*
* We will change zp_size, lock the whole file.
*/
- rl = zfs_range_lock(&zp->z_range_lock, 0, UINT64_MAX, RL_WRITER);
+ lr = rangelock_enter(&zp->z_rangelock, 0, UINT64_MAX, RL_WRITER);
/*
* Nothing to do if file already at desired length.
*/
if (end <= zp->z_size) {
- zfs_range_unlock(rl);
+ rangelock_exit(lr);
return (0);
}
tx = dmu_tx_create(zfsvfs->z_os);
error = dmu_tx_assign(tx, TXG_WAIT);
if (error) {
dmu_tx_abort(tx);
- zfs_range_unlock(rl);
+ rangelock_exit(lr);
return (error);
}
VERIFY(0 == sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(ZTOZSB(zp)),
&zp->z_size, sizeof (zp->z_size), tx));
- zfs_range_unlock(rl);
+ rangelock_exit(lr);
dmu_tx_commit(tx);
zfs_free_range(znode_t *zp, uint64_t off, uint64_t len)
{
zfsvfs_t *zfsvfs = ZTOZSB(zp);
- rl_t *rl;
+ locked_range_t *lr;
int error;
/*
* Lock the range being freed.
*/
- rl = zfs_range_lock(&zp->z_range_lock, off, len, RL_WRITER);
+ lr = rangelock_enter(&zp->z_rangelock, off, len, RL_WRITER);
/*
* Nothing to do if file already at desired length.
*/
if (off >= zp->z_size) {
- zfs_range_unlock(rl);
+ rangelock_exit(lr);
return (0);
}
page_len);
}
}
- zfs_range_unlock(rl);
+ rangelock_exit(lr);
return (error);
}
{
zfsvfs_t *zfsvfs = ZTOZSB(zp);
dmu_tx_t *tx;
- rl_t *rl;
+ locked_range_t *lr;
int error;
sa_bulk_attr_t bulk[2];
int count = 0;
/*
* We will change zp_size, lock the whole file.
*/
- rl = zfs_range_lock(&zp->z_range_lock, 0, UINT64_MAX, RL_WRITER);
+ lr = rangelock_enter(&zp->z_rangelock, 0, UINT64_MAX, RL_WRITER);
/*
* Nothing to do if file already at desired length.
*/
if (end >= zp->z_size) {
- zfs_range_unlock(rl);
+ rangelock_exit(lr);
return (0);
}
- error = dmu_free_long_range(zfsvfs->z_os, zp->z_id, end, -1);
+ error = dmu_free_long_range(zfsvfs->z_os, zp->z_id, end,
+ DMU_OBJECT_END);
if (error) {
- zfs_range_unlock(rl);
+ rangelock_exit(lr);
return (error);
}
tx = dmu_tx_create(zfsvfs->z_os);
error = dmu_tx_assign(tx, TXG_WAIT);
if (error) {
dmu_tx_abort(tx);
- zfs_range_unlock(rl);
+ rangelock_exit(lr);
return (error);
}
VERIFY(sa_bulk_update(zp->z_sa_hdl, bulk, count, tx) == 0);
dmu_tx_commit(tx);
-
- zfs_range_unlock(rl);
+ rangelock_exit(lr);
return (0);
}
rootzp->z_unlinked = 0;
rootzp->z_atime_dirty = 0;
rootzp->z_is_sa = USE_SA(version, os);
+ rootzp->z_pflags = 0;
zfsvfs = kmem_zalloc(sizeof (zfsvfs_t), KM_SLEEP);
zfsvfs->z_os = os;
sa_handle_destroy(rootzp->z_sa_hdl);
kmem_cache_free(znode_cache, rootzp);
- /*
- * Create shares directory
- */
- error = zfs_create_share_dir(zfsvfs, tx);
- ASSERT(error == 0);
-
for (i = 0; i != size; i++) {
avl_destroy(&zfsvfs->z_hold_trees[i]);
mutex_destroy(&zfsvfs->z_hold_locks[i]);
*path = '\0';
sa_hdl = hdl;
+ uint64_t deleteq_obj;
+ VERIFY0(zap_lookup(osp, MASTER_NODE_OBJ,
+ ZFS_UNLINKED_SET, sizeof (uint64_t), 1, &deleteq_obj));
+ error = zap_lookup_int(osp, deleteq_obj, obj);
+ if (error == 0) {
+ return (ESTALE);
+ } else if (error != ENOENT) {
+ return (error);
+ }
+ error = 0;
+
for (;;) {
uint64_t pobj = 0;
char component[MAXNAMELEN + 2];
return (error);
}
-#if defined(_KERNEL) && defined(HAVE_SPL)
+#if defined(_KERNEL)
EXPORT_SYMBOL(zfs_create_fs);
EXPORT_SYMBOL(zfs_obj_to_path);
/* CSTYLED */
module_param(zfs_object_mutex_size, uint, 0644);
MODULE_PARM_DESC(zfs_object_mutex_size, "Size of znode hold array");
+module_param(zfs_unlink_suspend_progress, int, 0644);
+MODULE_PARM_DESC(zfs_unlink_suspend_progress, "Set to prevent async unlinks "
+"(debug - leaks space into the unlinked set)");
#endif
projects / mirror_zfs.git / blobdiff