* CDDL HEADER END
*/
/*
- * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
*/
/* Portions Copyright 2007 Jeremy Teo */
+/* Portions Copyright 2010 Robert Milkowski */
#include <sys/types.h>
#include <sys/param.h>
#include <sys/zfs_ioctl.h>
#include <sys/fs/zfs.h>
#include <sys/dmu.h>
+#include <sys/dmu_objset.h>
#include <sys/spa.h>
#include <sys/txg.h>
#include <sys/dbuf.h>
#include <sys/zap.h>
+#include <sys/sa.h>
#include <sys/dirent.h>
#include <sys/policy.h>
#include <sys/sunddi.h>
#include "fs/fs_subr.h"
#include <sys/zfs_ctldir.h>
#include <sys/zfs_fuid.h>
+#include <sys/zfs_sa.h>
#include <sys/dnlc.h>
#include <sys/zfs_rlock.h>
#include <sys/extdirent.h>
#include <sys/kidmap.h>
-#include <sys/cred_impl.h>
+#include <sys/cred.h>
#include <sys/attr.h>
/*
ZFS_ENTER(zfsvfs);
ZFS_VERIFY_ZP(zp);
- if ((flag & FWRITE) && (zp->z_phys->zp_flags & ZFS_APPENDONLY) &&
+ if ((flag & FWRITE) && (zp->z_pflags & ZFS_APPENDONLY) &&
((flag & FAPPEND) == 0)) {
ZFS_EXIT(zfsvfs);
return (EPERM);
if (!zfs_has_ctldir(zp) && zp->z_zfsvfs->z_vscan &&
ZTOV(zp)->v_type == VREG &&
- !(zp->z_phys->zp_flags & ZFS_AV_QUARANTINED) &&
- zp->z_phys->zp_size > 0) {
+ !(zp->z_pflags & ZFS_AV_QUARANTINED) && zp->z_size > 0) {
if (fs_vscan(*vpp, cr, 0) != 0) {
ZFS_EXIT(zfsvfs);
return (EACCES);
if (!zfs_has_ctldir(zp) && zp->z_zfsvfs->z_vscan &&
ZTOV(zp)->v_type == VREG &&
- !(zp->z_phys->zp_flags & ZFS_AV_QUARANTINED) &&
- zp->z_phys->zp_size > 0)
+ !(zp->z_pflags & ZFS_AV_QUARANTINED) && zp->z_size > 0)
VERIFY(fs_vscan(vp, cr, 1) == 0);
ZFS_EXIT(zfsvfs);
int error;
boolean_t hole;
- file_sz = zp->z_phys->zp_size;
+ file_sz = zp->z_size;
if (noff >= file_sz) {
return (ENXIO);
}
ssize_t n, nbytes;
int error;
rl_t *rl;
+ xuio_t *xuio = NULL;
ZFS_ENTER(zfsvfs);
ZFS_VERIFY_ZP(zp);
os = zfsvfs->z_os;
- if (zp->z_phys->zp_flags & ZFS_AV_QUARANTINED) {
+ if (zp->z_pflags & ZFS_AV_QUARANTINED) {
ZFS_EXIT(zfsvfs);
return (EACCES);
}
/*
* Check for mandatory locks
*/
- if (MANDMODE((mode_t)zp->z_phys->zp_mode)) {
+ if (MANDMODE(zp->z_mode)) {
if (error = chklock(vp, FREAD,
uio->uio_loffset, uio->uio_resid, uio->uio_fmode, ct)) {
ZFS_EXIT(zfsvfs);
/*
* If we're in FRSYNC mode, sync out this znode before reading it.
*/
- if (ioflag & FRSYNC)
+ if (ioflag & FRSYNC || zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS)
zil_commit(zfsvfs->z_log, zp->z_last_itx, zp->z_id);
/*
* If we are reading past end-of-file we can skip
* to the end; but we might still need to set atime.
*/
- if (uio->uio_loffset >= zp->z_phys->zp_size) {
+ if (uio->uio_loffset >= zp->z_size) {
error = 0;
goto out;
}
- ASSERT(uio->uio_loffset < zp->z_phys->zp_size);
- n = MIN(uio->uio_resid, zp->z_phys->zp_size - uio->uio_loffset);
+ ASSERT(uio->uio_loffset < zp->z_size);
+ n = MIN(uio->uio_resid, zp->z_size - uio->uio_loffset);
+
+ if ((uio->uio_extflg == UIO_XUIO) &&
+ (((xuio_t *)uio)->xu_type == UIOTYPE_ZEROCOPY)) {
+ int nblk;
+ int blksz = zp->z_blksz;
+ uint64_t offset = uio->uio_loffset;
+
+ xuio = (xuio_t *)uio;
+ if ((ISP2(blksz))) {
+ nblk = (P2ROUNDUP(offset + n, blksz) - P2ALIGN(offset,
+ blksz)) / blksz;
+ } else {
+ ASSERT(offset + n <= blksz);
+ nblk = 1;
+ }
+ (void) dmu_xuio_init(xuio, nblk);
+
+ if (vn_has_cached_data(vp)) {
+ /*
+ * For simplicity, we always allocate a full buffer
+ * even if we only expect to read a portion of a block.
+ */
+ while (--nblk >= 0) {
+ (void) dmu_xuio_add(xuio,
+ dmu_request_arcbuf(sa_get_db(zp->z_sa_hdl),
+ blksz), 0, blksz);
+ }
+ }
+ }
while (n > 0) {
nbytes = MIN(n, zfs_read_chunk_size -
n -= nbytes;
}
-
out:
zfs_range_unlock(rl);
* Timestamps:
* vp - ctime|mtime updated if byte count > 0
*/
+
/* ARGSUSED */
static int
zfs_write(vnode_t *vp, uio_t *uio, int ioflag, cred_t *cr, caller_context_t *ct)
ssize_t n, nbytes;
rl_t *rl;
int max_blksz = zfsvfs->z_max_blksz;
- uint64_t pflags;
int error;
arc_buf_t *abuf;
+ iovec_t *aiov;
+ xuio_t *xuio = NULL;
+ int i_iov = 0;
+ int iovcnt = uio->uio_iovcnt;
+ iovec_t *iovp = uio->uio_iov;
+ int write_eof;
+ int count = 0;
+ sa_bulk_attr_t bulk[4];
+ uint64_t mtime[2], ctime[2];
/*
* Fasttrack empty write
ZFS_ENTER(zfsvfs);
ZFS_VERIFY_ZP(zp);
+ 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);
+ SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zfsvfs), NULL,
+ &zp->z_size, 8);
+ SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), NULL,
+ &zp->z_pflags, 8);
+
/*
* If immutable or not appending then return EPERM
*/
- pflags = zp->z_phys->zp_flags;
- if ((pflags & (ZFS_IMMUTABLE | ZFS_READONLY)) ||
- ((pflags & ZFS_APPENDONLY) && !(ioflag & FAPPEND) &&
- (uio->uio_loffset < zp->z_phys->zp_size))) {
+ if ((zp->z_pflags & (ZFS_IMMUTABLE | ZFS_READONLY)) ||
+ ((zp->z_pflags & ZFS_APPENDONLY) && !(ioflag & FAPPEND) &&
+ (uio->uio_loffset < zp->z_size))) {
ZFS_EXIT(zfsvfs);
return (EPERM);
}
zilog = zfsvfs->z_log;
/*
+ * Validate file offset
+ */
+ woff = ioflag & FAPPEND ? zp->z_size : uio->uio_loffset;
+ if (woff < 0) {
+ ZFS_EXIT(zfsvfs);
+ return (EINVAL);
+ }
+
+ /*
+ * Check for mandatory locks before calling zfs_range_lock()
+ * in order to prevent a deadlock with locks set via fcntl().
+ */
+ if (MANDMODE((mode_t)zp->z_mode) &&
+ (error = chklock(vp, FWRITE, woff, n, uio->uio_fmode, ct)) != 0) {
+ ZFS_EXIT(zfsvfs);
+ return (error);
+ }
+
+ /*
* Pre-fault the pages to ensure slow (eg NFS) pages
* don't hold up txg.
+ * Skip this if uio contains loaned arc_buf.
*/
- uio_prefaultpages(n, uio);
+ if ((uio->uio_extflg == UIO_XUIO) &&
+ (((xuio_t *)uio)->xu_type == UIOTYPE_ZEROCOPY))
+ xuio = (xuio_t *)uio;
+ else
+ uio_prefaultpages(n, uio);
/*
* If in append mode, set the io offset pointer to eof.
*/
if (ioflag & FAPPEND) {
/*
- * Range lock for a file append:
- * The value for the start of range will be determined by
- * zfs_range_lock() (to guarantee append semantics).
- * If this write will cause the block size to increase,
- * zfs_range_lock() will lock the entire file, so we must
- * later reduce the range after we grow the block size.
+ * Obtain an appending range lock to guarantee file append
+ * semantics. We reset the write offset once we have the lock.
*/
rl = zfs_range_lock(zp, 0, n, RL_APPEND);
+ woff = rl->r_off;
if (rl->r_len == UINT64_MAX) {
- /* overlocked, zp_size can't change */
- woff = uio->uio_loffset = zp->z_phys->zp_size;
- } else {
- woff = uio->uio_loffset = rl->r_off;
+ /*
+ * We overlocked the file because this write will cause
+ * the file block size to increase.
+ * Note that zp_size cannot change with this lock held.
+ */
+ woff = zp->z_size;
}
+ uio->uio_loffset = woff;
} else {
- woff = uio->uio_loffset;
- /*
- * Validate file offset
- */
- if (woff < 0) {
- ZFS_EXIT(zfsvfs);
- return (EINVAL);
- }
-
/*
- * If we need to grow the block size then zfs_range_lock()
- * will lock a wider range than we request here.
- * Later after growing the block size we reduce the range.
+ * Note that if the file block size will change as a result of
+ * this write, then this range lock will lock the entire file
+ * so that we can re-write the block safely.
*/
rl = zfs_range_lock(zp, woff, n, RL_WRITER);
}
if ((woff + n) > limit || woff > (limit - n))
n = limit - woff;
- /*
- * Check for mandatory locks
- */
- if (MANDMODE((mode_t)zp->z_phys->zp_mode) &&
- (error = chklock(vp, FWRITE, woff, n, uio->uio_fmode, ct)) != 0) {
- zfs_range_unlock(rl);
- ZFS_EXIT(zfsvfs);
- return (error);
- }
- end_size = MAX(zp->z_phys->zp_size, woff + n);
+ /* Will this write extend the file length? */
+ write_eof = (woff + n > zp->z_size);
+
+ end_size = MAX(zp->z_size, woff + n);
/*
* Write the file in reasonable size chunks. Each chunk is written
while (n > 0) {
abuf = NULL;
woff = uio->uio_loffset;
-
again:
- if (zfs_usergroup_overquota(zfsvfs,
- B_FALSE, zp->z_phys->zp_uid) ||
- zfs_usergroup_overquota(zfsvfs,
- B_TRUE, zp->z_phys->zp_gid)) {
+ if (zfs_owner_overquota(zfsvfs, zp, B_FALSE) ||
+ zfs_owner_overquota(zfsvfs, zp, B_TRUE)) {
if (abuf != NULL)
dmu_return_arcbuf(abuf);
error = EDQUOT;
break;
}
- /*
- * If dmu_assign_arcbuf() is expected to execute with minimum
- * overhead loan an arc buffer and copy user data to it before
- * we enter a txg. This avoids holding a txg forever while we
- * pagefault on a hanging NFS server mapping.
- */
- if (abuf == NULL && n >= max_blksz &&
- woff >= zp->z_phys->zp_size &&
+ if (xuio && abuf == NULL) {
+ ASSERT(i_iov < iovcnt);
+ aiov = &iovp[i_iov];
+ abuf = dmu_xuio_arcbuf(xuio, i_iov);
+ dmu_xuio_clear(xuio, i_iov);
+ DTRACE_PROBE3(zfs_cp_write, int, i_iov,
+ iovec_t *, aiov, arc_buf_t *, abuf);
+ ASSERT((aiov->iov_base == abuf->b_data) ||
+ ((char *)aiov->iov_base - (char *)abuf->b_data +
+ aiov->iov_len == arc_buf_size(abuf)));
+ i_iov++;
+ } else if (abuf == NULL && n >= max_blksz &&
+ woff >= zp->z_size &&
P2PHASE(woff, max_blksz) == 0 &&
zp->z_blksz == max_blksz) {
+ /*
+ * This write covers a full block. "Borrow" a buffer
+ * from the dmu so that we can fill it before we enter
+ * a transaction. This avoids the possibility of
+ * holding up the transaction if the data copy hangs
+ * up on a pagefault (e.g., from an NFS server mapping).
+ */
size_t cbytes;
- abuf = dmu_request_arcbuf(zp->z_dbuf, max_blksz);
+ abuf = dmu_request_arcbuf(sa_get_db(zp->z_sa_hdl),
+ max_blksz);
ASSERT(abuf != NULL);
ASSERT(arc_buf_size(abuf) == max_blksz);
if (error = uiocopy(abuf->b_data, max_blksz,
* Start a transaction.
*/
tx = dmu_tx_create(zfsvfs->z_os);
- dmu_tx_hold_bonus(tx, zp->z_id);
+ dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE);
dmu_tx_hold_write(tx, zp->z_id, woff, MIN(n, max_blksz));
+ zfs_sa_upgrade_txholds(tx, zp);
error = dmu_tx_assign(tx, TXG_NOWAIT);
if (error) {
if (error == ERESTART) {
if (abuf == NULL) {
tx_bytes = uio->uio_resid;
- error = dmu_write_uio(zfsvfs->z_os, zp->z_id, uio,
- nbytes, tx);
+ error = dmu_write_uio_dbuf(sa_get_db(zp->z_sa_hdl),
+ uio, nbytes, tx);
tx_bytes -= uio->uio_resid;
} else {
tx_bytes = nbytes;
- ASSERT(tx_bytes == max_blksz);
- dmu_assign_arcbuf(zp->z_dbuf, woff, abuf, tx);
+ ASSERT(xuio == NULL || tx_bytes == aiov->iov_len);
+ /*
+ * If this is not a full block write, but we are
+ * extending the file past EOF and this data starts
+ * block-aligned, use assign_arcbuf(). Otherwise,
+ * write via dmu_write().
+ */
+ if (tx_bytes < max_blksz && (!write_eof ||
+ aiov->iov_base != abuf->b_data)) {
+ ASSERT(xuio);
+ dmu_write(zfsvfs->z_os, zp->z_id, woff,
+ aiov->iov_len, aiov->iov_base, tx);
+ dmu_return_arcbuf(abuf);
+ xuio_stat_wbuf_copied();
+ } else {
+ ASSERT(xuio || tx_bytes == max_blksz);
+ dmu_assign_arcbuf(sa_get_db(zp->z_sa_hdl),
+ woff, abuf, tx);
+ }
ASSERT(tx_bytes <= uio->uio_resid);
uioskip(uio, tx_bytes);
}
* partial progress, update the znode and ZIL accordingly.
*/
if (tx_bytes == 0) {
+ (void) sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(zfsvfs),
+ (void *)&zp->z_size, sizeof (uint64_t), tx);
dmu_tx_commit(tx);
ASSERT(error != 0);
break;
* been done, but that would still expose the ISUID/ISGID
* to another app after the partial write is committed.
*
- * Note: we don't call zfs_fuid_map_id() here because
- * user 0 is not an ephemeral uid.
*/
mutex_enter(&zp->z_acl_lock);
- if ((zp->z_phys->zp_mode & (S_IXUSR | (S_IXUSR >> 3) |
+ if ((zp->z_mode & (S_IXUSR | (S_IXUSR >> 3) |
(S_IXUSR >> 6))) != 0 &&
- (zp->z_phys->zp_mode & (S_ISUID | S_ISGID)) != 0 &&
+ (zp->z_mode & (S_ISUID | S_ISGID)) != 0 &&
secpolicy_vnode_setid_retain(cr,
- (zp->z_phys->zp_mode & S_ISUID) != 0 &&
- zp->z_phys->zp_uid == 0) != 0) {
- zp->z_phys->zp_mode &= ~(S_ISUID | S_ISGID);
+ (zp->z_mode & S_ISUID) != 0 && zp->z_uid == 0) != 0) {
+ uint64_t newmode;
+ zp->z_mode &= ~(S_ISUID | S_ISGID);
+ newmode = zp->z_mode;
+ (void) sa_update(zp->z_sa_hdl, SA_ZPL_MODE(zfsvfs),
+ (void *)&newmode, sizeof (uint64_t), tx);
}
mutex_exit(&zp->z_acl_lock);
- /*
- * Update time stamp. NOTE: This marks the bonus buffer as
- * dirty, so we don't have to do it again for zp_size.
- */
- zfs_time_stamper(zp, CONTENT_MODIFIED, tx);
+ zfs_tstamp_update_setup(zp, CONTENT_MODIFIED, mtime, ctime,
+ B_TRUE);
/*
* Update the file size (zp_size) if it has changed;
* account for possible concurrent updates.
*/
- while ((end_size = zp->z_phys->zp_size) < uio->uio_loffset)
- (void) atomic_cas_64(&zp->z_phys->zp_size, end_size,
+ while ((end_size = zp->z_size) < uio->uio_loffset) {
+ (void) atomic_cas_64(&zp->z_size, end_size,
uio->uio_loffset);
+ ASSERT(error == 0);
+ }
+ error = sa_bulk_update(zp->z_sa_hdl, bulk, count, tx);
+
zfs_log_write(zilog, tx, TX_WRITE, zp, woff, tx_bytes, ioflag);
dmu_tx_commit(tx);
return (error);
}
- if (ioflag & (FSYNC | FDSYNC))
+ if (ioflag & (FSYNC | FDSYNC) ||
+ zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS)
zil_commit(zilog, zp->z_last_itx, zp->z_id);
ZFS_EXIT(zfsvfs);
}
void
-zfs_get_done(dmu_buf_t *db, void *vzgd)
+zfs_get_done(zgd_t *zgd, int error)
{
- zgd_t *zgd = (zgd_t *)vzgd;
- rl_t *rl = zgd->zgd_rl;
- vnode_t *vp = ZTOV(rl->r_zp);
- objset_t *os = rl->r_zp->z_zfsvfs->z_os;
+ znode_t *zp = zgd->zgd_private;
+ objset_t *os = zp->z_zfsvfs->z_os;
+
+ if (zgd->zgd_db)
+ dmu_buf_rele(zgd->zgd_db, zgd);
+
+ zfs_range_unlock(zgd->zgd_rl);
- dmu_buf_rele(db, vzgd);
- zfs_range_unlock(rl);
/*
* Release the vnode asynchronously as we currently have the
* txg stopped from syncing.
*/
- VN_RELE_ASYNC(vp, dsl_pool_vnrele_taskq(dmu_objset_pool(os)));
- zil_add_block(zgd->zgd_zilog, zgd->zgd_bp);
+ VN_RELE_ASYNC(ZTOV(zp), dsl_pool_vnrele_taskq(dmu_objset_pool(os)));
+
+ if (error == 0 && zgd->zgd_bp)
+ zil_add_block(zgd->zgd_zilog, zgd->zgd_bp);
+
kmem_free(zgd, sizeof (zgd_t));
}
zfsvfs_t *zfsvfs = arg;
objset_t *os = zfsvfs->z_os;
znode_t *zp;
- uint64_t off = lr->lr_offset;
+ uint64_t object = lr->lr_foid;
+ uint64_t offset = lr->lr_offset;
+ uint64_t size = lr->lr_length;
+ blkptr_t *bp = &lr->lr_blkptr;
dmu_buf_t *db;
- rl_t *rl;
zgd_t *zgd;
- int dlen = lr->lr_length; /* length of user data */
int error = 0;
- ASSERT(zio);
- ASSERT(dlen != 0);
+ ASSERT(zio != NULL);
+ ASSERT(size != 0);
/*
* Nothing to do if the file has been removed
*/
- if (zfs_zget(zfsvfs, lr->lr_foid, &zp) != 0)
+ if (zfs_zget(zfsvfs, object, &zp) != 0)
return (ENOENT);
if (zp->z_unlinked) {
/*
return (ENOENT);
}
+ zgd = (zgd_t *)kmem_zalloc(sizeof (zgd_t), KM_SLEEP);
+ zgd->zgd_zilog = zfsvfs->z_log;
+ zgd->zgd_private = zp;
+
/*
* Write records come in two flavors: immediate and indirect.
* For small writes it's cheaper to store the data with the
* we don't have to write the data twice.
*/
if (buf != NULL) { /* immediate write */
- rl = zfs_range_lock(zp, off, dlen, RL_READER);
+ zgd->zgd_rl = zfs_range_lock(zp, offset, size, RL_READER);
/* test for truncation needs to be done while range locked */
- if (off >= zp->z_phys->zp_size) {
+ if (offset >= zp->z_size) {
error = ENOENT;
- goto out;
+ } else {
+ error = dmu_read(os, object, offset, size, buf,
+ DMU_READ_NO_PREFETCH);
}
- VERIFY(0 == dmu_read(os, lr->lr_foid, off, dlen, buf,
- DMU_READ_NO_PREFETCH));
+ ASSERT(error == 0 || error == ENOENT);
} else { /* indirect write */
- uint64_t boff; /* block starting offset */
-
/*
* Have to lock the whole block to ensure when it's
* written out and it's checksum is being calculated
* blocksize after we get the lock in case it's changed!
*/
for (;;) {
- if (ISP2(zp->z_blksz)) {
- boff = P2ALIGN_TYPED(off, zp->z_blksz,
- uint64_t);
- } else {
- boff = 0;
- }
- dlen = zp->z_blksz;
- rl = zfs_range_lock(zp, boff, dlen, RL_READER);
- if (zp->z_blksz == dlen)
+ uint64_t blkoff;
+ size = zp->z_blksz;
+ blkoff = ISP2(size) ? P2PHASE(offset, size) : offset;
+ offset -= blkoff;
+ zgd->zgd_rl = zfs_range_lock(zp, offset, size,
+ RL_READER);
+ if (zp->z_blksz == size)
break;
- zfs_range_unlock(rl);
+ offset += blkoff;
+ zfs_range_unlock(zgd->zgd_rl);
}
/* test for truncation needs to be done while range locked */
- if (off >= zp->z_phys->zp_size) {
+ if (lr->lr_offset >= zp->z_size)
error = ENOENT;
- goto out;
- }
- zgd = (zgd_t *)kmem_alloc(sizeof (zgd_t), KM_SLEEP);
- zgd->zgd_rl = rl;
- zgd->zgd_zilog = zfsvfs->z_log;
- zgd->zgd_bp = &lr->lr_blkptr;
#ifdef DEBUG
if (zil_fault_io) {
error = EIO;
zil_fault_io = 0;
- } else {
- error = dmu_buf_hold(os, lr->lr_foid, boff, zgd, &db);
}
-#else
- error = dmu_buf_hold(os, lr->lr_foid, boff, zgd, &db);
#endif
- if (error != 0) {
- kmem_free(zgd, sizeof (zgd_t));
- goto out;
- }
-
- ASSERT(boff == db->db_offset);
- lr->lr_blkoff = off - boff;
- error = dmu_sync(zio, db, &lr->lr_blkptr,
- lr->lr_common.lrc_txg, zfs_get_done, zgd);
- ASSERT((error && error != EINPROGRESS) ||
- lr->lr_length <= zp->z_blksz);
if (error == 0)
- zil_add_block(zfsvfs->z_log, &lr->lr_blkptr);
- /*
- * If we get EINPROGRESS, then we need to wait for a
- * write IO initiated by dmu_sync() to complete before
- * we can release this dbuf. We will finish everything
- * up in the zfs_get_done() callback.
- */
- if (error == EINPROGRESS)
- return (0);
- dmu_buf_rele(db, zgd);
- kmem_free(zgd, sizeof (zgd_t));
+ error = dmu_buf_hold(os, object, offset, zgd, &db,
+ DMU_READ_NO_PREFETCH);
+
+ if (error == 0) {
+ zgd->zgd_db = db;
+ zgd->zgd_bp = bp;
+
+ ASSERT(db->db_offset == offset);
+ ASSERT(db->db_size == size);
+
+ error = dmu_sync(zio, lr->lr_common.lrc_txg,
+ zfs_get_done, zgd);
+ ASSERT(error || lr->lr_length <= zp->z_blksz);
+
+ /*
+ * On success, we need to wait for the write I/O
+ * initiated by dmu_sync() to complete before we can
+ * release this dbuf. We will finish everything up
+ * in the zfs_get_done() callback.
+ */
+ if (error == 0)
+ return (0);
+
+ if (error == EALREADY) {
+ lr->lr_common.lrc_txtype = TX_WRITE2;
+ error = 0;
+ }
+ }
}
-out:
- zfs_range_unlock(rl);
- /*
- * Release the vnode asynchronously as we currently have the
- * txg stopped from syncing.
- */
- VN_RELE_ASYNC(ZTOV(zp), dsl_pool_vnrele_taskq(dmu_objset_pool(os)));
+
+ zfs_get_done(zgd, error);
+
return (error);
}
if (dvp->v_type != VDIR) {
return (ENOTDIR);
- } else if (zdp->z_dbuf == NULL) {
+ } else if (zdp->z_sa_hdl == NULL) {
return (EIO);
}
* We don't allow recursive attributes..
* Maybe someday we will.
*/
- if (zdp->z_phys->zp_flags & ZFS_XATTR) {
+ if (zdp->z_pflags & ZFS_XATTR) {
ZFS_EXIT(zfsvfs);
return (EINVAL);
}
ksid_t *ksid;
uid_t uid;
gid_t gid = crgetgid(cr);
- zfs_acl_ids_t acl_ids;
+ zfs_acl_ids_t acl_ids;
boolean_t fuid_dirtied;
+ boolean_t have_acl = B_FALSE;
/*
* If we have an ephemeral id, ACL, or XVATTR then
return (error);
}
}
+
if (zp == NULL) {
uint64_t txtype;
* We only support the creation of regular files in
* extended attribute directories.
*/
- if ((dzp->z_phys->zp_flags & ZFS_XATTR) &&
+
+ if ((dzp->z_pflags & ZFS_XATTR) &&
(vap->va_type != VREG)) {
error = EINVAL;
goto out;
}
- if ((error = zfs_acl_ids_create(dzp, 0, vap, cr, vsecp,
- &acl_ids)) != 0)
+ if (!have_acl && (error = zfs_acl_ids_create(dzp, 0, vap,
+ cr, vsecp, &acl_ids)) != 0)
goto out;
+ have_acl = B_TRUE;
+
if (zfs_acl_ids_overquota(zfsvfs, &acl_ids)) {
zfs_acl_ids_free(&acl_ids);
error = EDQUOT;
}
tx = dmu_tx_create(os);
- dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT);
+
+ dmu_tx_hold_sa_create(tx, acl_ids.z_aclp->z_acl_bytes +
+ ZFS_SA_BASE_ATTR_SIZE);
+
fuid_dirtied = zfsvfs->z_fuid_dirty;
if (fuid_dirtied)
zfs_fuid_txhold(zfsvfs, tx);
- dmu_tx_hold_bonus(tx, dzp->z_id);
dmu_tx_hold_zap(tx, dzp->z_id, TRUE, name);
- if (acl_ids.z_aclp->z_acl_bytes > ZFS_ACE_SPACE) {
+ dmu_tx_hold_sa(tx, dzp->z_sa_hdl, B_FALSE);
+ if (!zfsvfs->z_use_sa &&
+ acl_ids.z_aclp->z_acl_bytes > ZFS_ACE_SPACE) {
dmu_tx_hold_write(tx, DMU_NEW_OBJECT,
- 0, SPA_MAXBLOCKSIZE);
+ 0, acl_ids.z_aclp->z_acl_bytes);
}
error = dmu_tx_assign(tx, TXG_NOWAIT);
if (error) {
- zfs_acl_ids_free(&acl_ids);
zfs_dirent_unlock(dl);
if (error == ERESTART) {
dmu_tx_wait(tx);
dmu_tx_abort(tx);
goto top;
}
+ zfs_acl_ids_free(&acl_ids);
dmu_tx_abort(tx);
ZFS_EXIT(zfsvfs);
return (error);
}
- zfs_mknode(dzp, vap, tx, cr, 0, &zp, 0, &acl_ids);
+ zfs_mknode(dzp, vap, tx, cr, 0, &zp, &acl_ids);
if (fuid_dirtied)
zfs_fuid_sync(zfsvfs, tx);
(void) zfs_link_create(dl, zp, tx, ZNEW);
-
txtype = zfs_log_create_txtype(Z_FILE, vsecp, vap);
if (flag & FIGNORECASE)
txtype |= TX_CI;
error = specvp_check(vpp, cr);
}
+ if (zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS)
+ zil_commit(zilog, UINT64_MAX, 0);
+
ZFS_EXIT(zfsvfs);
return (error);
}
* dvp - ctime|mtime
* vp - ctime (if nlink > 0)
*/
+
+uint64_t null_xattr = 0;
+
/*ARGSUSED*/
static int
zfs_remove(vnode_t *dvp, char *name, cred_t *cr, caller_context_t *ct,
vnode_t *vp;
zfsvfs_t *zfsvfs = dzp->z_zfsvfs;
zilog_t *zilog;
- uint64_t acl_obj, xattr_obj;
+ uint64_t acl_obj, xattr_obj = 0;
+ uint64_t xattr_obj_unlinked = 0;
zfs_dirlock_t *dl;
dmu_tx_t *tx;
boolean_t may_delete_now, delete_now = FALSE;
*/
tx = dmu_tx_create(zfsvfs->z_os);
dmu_tx_hold_zap(tx, dzp->z_id, FALSE, name);
- dmu_tx_hold_bonus(tx, zp->z_id);
+ dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE);
+ zfs_sa_upgrade_txholds(tx, zp);
+ zfs_sa_upgrade_txholds(tx, dzp);
if (may_delete_now) {
toobig =
- zp->z_phys->zp_size > zp->z_blksz * DMU_MAX_DELETEBLKCNT;
+ zp->z_size > zp->z_blksz * DMU_MAX_DELETEBLKCNT;
/* if the file is too big, only hold_free a token amount */
dmu_tx_hold_free(tx, zp->z_id, 0,
(toobig ? DMU_MAX_ACCESS : DMU_OBJECT_END));
}
/* are there any extended attributes? */
- if ((xattr_obj = zp->z_phys->zp_xattr) != 0) {
- /* XXX - do we need this if we are deleting? */
- dmu_tx_hold_bonus(tx, xattr_obj);
+ error = sa_lookup(zp->z_sa_hdl, SA_ZPL_XATTR(zfsvfs),
+ &xattr_obj, sizeof (xattr_obj));
+ if (xattr_obj) {
+ error = zfs_zget(zfsvfs, xattr_obj, &xzp);
+ ASSERT3U(error, ==, 0);
+ dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_TRUE);
+ dmu_tx_hold_sa(tx, xzp->z_sa_hdl, B_FALSE);
}
/* are there any additional acls */
- if ((acl_obj = zp->z_phys->zp_acl.z_acl_extern_obj) != 0 &&
- may_delete_now)
+ if ((acl_obj = ZFS_EXTERNAL_ACL(zp)) != 0 && may_delete_now)
dmu_tx_hold_free(tx, acl_obj, 0, DMU_OBJECT_END);
/* charge as an update -- would be nice not to charge at all */
}
if (unlinked) {
+
mutex_enter(&vp->v_lock);
+
+ (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_XATTR(zfsvfs),
+ &xattr_obj_unlinked, sizeof (xattr_obj_unlinked));
delete_now = may_delete_now && !toobig &&
vp->v_count == 1 && !vn_has_cached_data(vp) &&
- zp->z_phys->zp_xattr == xattr_obj &&
- zp->z_phys->zp_acl.z_acl_extern_obj == acl_obj;
+ xattr_obj == xattr_obj_unlinked && ZFS_EXTERNAL_ACL(zp) ==
+ acl_obj;
mutex_exit(&vp->v_lock);
}
if (delete_now) {
- if (zp->z_phys->zp_xattr) {
- error = zfs_zget(zfsvfs, zp->z_phys->zp_xattr, &xzp);
- ASSERT3U(error, ==, 0);
- ASSERT3U(xzp->z_phys->zp_links, ==, 2);
- dmu_buf_will_dirty(xzp->z_dbuf, tx);
+ if (xattr_obj_unlinked) {
+ ASSERT3U(xzp->z_links, ==, 2);
mutex_enter(&xzp->z_lock);
xzp->z_unlinked = 1;
- xzp->z_phys->zp_links = 0;
+ xzp->z_links = 0;
+ error = sa_update(xzp->z_sa_hdl, SA_ZPL_LINKS(zfsvfs),
+ &xzp->z_links, sizeof (xzp->z_links), tx);
+ ASSERT3U(error, ==, 0);
mutex_exit(&xzp->z_lock);
zfs_unlinked_add(xzp, tx);
- zp->z_phys->zp_xattr = 0; /* probably unnecessary */
+ if (zp->z_is_sa)
+ error = sa_remove(zp->z_sa_hdl,
+ SA_ZPL_XATTR(zfsvfs), tx);
+ else
+ error = sa_update(zp->z_sa_hdl,
+ SA_ZPL_XATTR(zfsvfs), &null_xattr,
+ sizeof (uint64_t), tx);
+ ASSERT3U(error, ==, 0);
}
mutex_enter(&zp->z_lock);
mutex_enter(&vp->v_lock);
zfs_dirent_unlock(dl);
- if (!delete_now) {
+ if (!delete_now)
VN_RELE(vp);
- } else if (xzp) {
- /* this rele is delayed to prevent nesting transactions */
+ if (xzp)
VN_RELE(ZTOV(xzp));
- }
+
+ if (zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS)
+ zil_commit(zilog, UINT64_MAX, 0);
ZFS_EXIT(zfsvfs);
return (error);
ksid_t *ksid;
uid_t uid;
gid_t gid = crgetgid(cr);
- zfs_acl_ids_t acl_ids;
+ zfs_acl_ids_t acl_ids;
boolean_t fuid_dirtied;
ASSERT(vap->va_type == VDIR);
ZFS_VERIFY_ZP(dzp);
zilog = zfsvfs->z_log;
- if (dzp->z_phys->zp_flags & ZFS_XATTR) {
+ if (dzp->z_pflags & ZFS_XATTR) {
ZFS_EXIT(zfsvfs);
return (EINVAL);
}
if (flags & FIGNORECASE)
zf |= ZCILOOK;
- if (vap->va_mask & AT_XVATTR)
+ if (vap->va_mask & AT_XVATTR) {
if ((error = secpolicy_xvattr((xvattr_t *)vap,
crgetuid(cr), cr, vap->va_type)) != 0) {
ZFS_EXIT(zfsvfs);
return (error);
}
+ }
+ if ((error = zfs_acl_ids_create(dzp, 0, vap, cr,
+ vsecp, &acl_ids)) != 0) {
+ ZFS_EXIT(zfsvfs);
+ return (error);
+ }
/*
* First make sure the new directory doesn't exist.
+ *
+ * Existence is checked first to make sure we don't return
+ * EACCES instead of EEXIST which can cause some applications
+ * to fail.
*/
top:
*vpp = NULL;
if (error = zfs_dirent_lock(&dl, dzp, dirname, &zp, zf,
NULL, NULL)) {
+ zfs_acl_ids_free(&acl_ids);
ZFS_EXIT(zfsvfs);
return (error);
}
if (error = zfs_zaccess(dzp, ACE_ADD_SUBDIRECTORY, 0, B_FALSE, cr)) {
+ zfs_acl_ids_free(&acl_ids);
zfs_dirent_unlock(dl);
ZFS_EXIT(zfsvfs);
return (error);
}
- if ((error = zfs_acl_ids_create(dzp, 0, vap, cr, vsecp,
- &acl_ids)) != 0) {
- zfs_dirent_unlock(dl);
- ZFS_EXIT(zfsvfs);
- return (error);
- }
if (zfs_acl_ids_overquota(zfsvfs, &acl_ids)) {
zfs_acl_ids_free(&acl_ids);
zfs_dirent_unlock(dl);
fuid_dirtied = zfsvfs->z_fuid_dirty;
if (fuid_dirtied)
zfs_fuid_txhold(zfsvfs, tx);
- if (acl_ids.z_aclp->z_acl_bytes > ZFS_ACE_SPACE)
- dmu_tx_hold_write(tx, DMU_NEW_OBJECT,
- 0, SPA_MAXBLOCKSIZE);
+ if (!zfsvfs->z_use_sa && acl_ids.z_aclp->z_acl_bytes > ZFS_ACE_SPACE) {
+ dmu_tx_hold_write(tx, DMU_NEW_OBJECT, 0,
+ acl_ids.z_aclp->z_acl_bytes);
+ }
+
+ dmu_tx_hold_sa_create(tx, acl_ids.z_aclp->z_acl_bytes +
+ ZFS_SA_BASE_ATTR_SIZE);
+
error = dmu_tx_assign(tx, TXG_NOWAIT);
if (error) {
- zfs_acl_ids_free(&acl_ids);
zfs_dirent_unlock(dl);
if (error == ERESTART) {
dmu_tx_wait(tx);
dmu_tx_abort(tx);
goto top;
}
+ zfs_acl_ids_free(&acl_ids);
dmu_tx_abort(tx);
ZFS_EXIT(zfsvfs);
return (error);
/*
* Create new node.
*/
- zfs_mknode(dzp, vap, tx, cr, 0, &zp, 0, &acl_ids);
+ zfs_mknode(dzp, vap, tx, cr, 0, &zp, &acl_ids);
if (fuid_dirtied)
zfs_fuid_sync(zfsvfs, tx);
+
/*
* Now put new name in parent dir.
*/
acl_ids.z_fuidp, vap);
zfs_acl_ids_free(&acl_ids);
+
dmu_tx_commit(tx);
zfs_dirent_unlock(dl);
+ if (zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS)
+ zil_commit(zilog, UINT64_MAX, 0);
+
ZFS_EXIT(zfsvfs);
return (0);
}
tx = dmu_tx_create(zfsvfs->z_os);
dmu_tx_hold_zap(tx, dzp->z_id, FALSE, name);
- dmu_tx_hold_bonus(tx, zp->z_id);
+ dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE);
dmu_tx_hold_zap(tx, zfsvfs->z_unlinkedobj, FALSE, NULL);
+ zfs_sa_upgrade_txholds(tx, zp);
+ zfs_sa_upgrade_txholds(tx, dzp);
error = dmu_tx_assign(tx, TXG_NOWAIT);
if (error) {
rw_exit(&zp->z_parent_lock);
VN_RELE(vp);
+ if (zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS)
+ zil_commit(zilog, UINT64_MAX, 0);
+
ZFS_EXIT(zfsvfs);
return (error);
}
zap_attribute_t zap;
uint_t bytes_wanted;
uint64_t offset; /* must be unsigned; checks for < 1 */
+ uint64_t parent;
int local_eof;
int outcount;
int error;
ZFS_ENTER(zfsvfs);
ZFS_VERIFY_ZP(zp);
+ if ((error = sa_lookup(zp->z_sa_hdl, SA_ZPL_PARENT(zfsvfs),
+ &parent, sizeof (parent))) != 0) {
+ ZFS_EXIT(zfsvfs);
+ return (error);
+ }
+
/*
* If we are not given an eof variable,
* use a local one.
} else if (offset == 1) {
(void) strcpy(zap.za_name, "..");
zap.za_normalization_conflict = 0;
- objnum = zp->z_phys->zp_parent;
+ objnum = parent;
} else if (offset == 2 && zfs_show_ctldir(zp)) {
(void) strcpy(zap.za_name, ZFS_CTLDIR_NAME);
zap.za_normalization_conflict = 0;
(void) tsd_set(zfs_fsyncer_key, (void *)zfs_fsync_sync_cnt);
- ZFS_ENTER(zfsvfs);
- ZFS_VERIFY_ZP(zp);
- zil_commit(zfsvfs->z_log, zp->z_last_itx, zp->z_id);
- ZFS_EXIT(zfsvfs);
+ if (zfsvfs->z_os->os_sync != ZFS_SYNC_DISABLED) {
+ ZFS_ENTER(zfsvfs);
+ ZFS_VERIFY_ZP(zp);
+ zil_commit(zfsvfs->z_log, zp->z_last_itx, zp->z_id);
+ ZFS_EXIT(zfsvfs);
+ }
return (0);
}
{
znode_t *zp = VTOZ(vp);
zfsvfs_t *zfsvfs = zp->z_zfsvfs;
- znode_phys_t *pzp;
int error = 0;
uint64_t links;
+ uint64_t mtime[2], ctime[2];
xvattr_t *xvap = (xvattr_t *)vap; /* vap may be an xvattr_t * */
xoptattr_t *xoap = NULL;
boolean_t skipaclchk = (flags & ATTR_NOACLCHECK) ? B_TRUE : B_FALSE;
+ sa_bulk_attr_t bulk[2];
+ int count = 0;
ZFS_ENTER(zfsvfs);
ZFS_VERIFY_ZP(zp);
- pzp = zp->z_phys;
+
+ 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 ((error = sa_bulk_lookup(zp->z_sa_hdl, bulk, count)) != 0) {
+ ZFS_EXIT(zfsvfs);
+ return (error);
+ }
/*
* If ACL is trivial don't bother looking for ACE_READ_ATTRIBUTES.
* Also, if we are the owner don't bother, since owner should
* always be allowed to read basic attributes of file.
*/
- if (!(pzp->zp_flags & ZFS_ACL_TRIVIAL) &&
- (pzp->zp_uid != crgetuid(cr))) {
+ if (!(zp->z_pflags & ZFS_ACL_TRIVIAL) && (zp->z_uid != crgetuid(cr))) {
if (error = zfs_zaccess(zp, ACE_READ_ATTRIBUTES, 0,
skipaclchk, cr)) {
ZFS_EXIT(zfsvfs);
mutex_enter(&zp->z_lock);
vap->va_type = vp->v_type;
- vap->va_mode = pzp->zp_mode & MODEMASK;
- zfs_fuid_map_ids(zp, cr, &vap->va_uid, &vap->va_gid);
+ vap->va_mode = zp->z_mode & MODEMASK;
+ vap->va_uid = zp->z_uid;
+ vap->va_gid = zp->z_gid;
vap->va_fsid = zp->z_zfsvfs->z_vfs->vfs_dev;
vap->va_nodeid = zp->z_id;
if ((vp->v_flag & VROOT) && zfs_show_ctldir(zp))
- links = pzp->zp_links + 1;
+ links = zp->z_links + 1;
else
- links = pzp->zp_links;
+ links = zp->z_links;
vap->va_nlink = MIN(links, UINT32_MAX); /* nlink_t limit! */
- vap->va_size = pzp->zp_size;
+ vap->va_size = zp->z_size;
vap->va_rdev = vp->v_rdev;
vap->va_seq = zp->z_seq;
if ((xoap = xva_getxoptattr(xvap)) != NULL && zfsvfs->z_use_fuids) {
if (XVA_ISSET_REQ(xvap, XAT_ARCHIVE)) {
xoap->xoa_archive =
- ((pzp->zp_flags & ZFS_ARCHIVE) != 0);
+ ((zp->z_pflags & ZFS_ARCHIVE) != 0);
XVA_SET_RTN(xvap, XAT_ARCHIVE);
}
if (XVA_ISSET_REQ(xvap, XAT_READONLY)) {
xoap->xoa_readonly =
- ((pzp->zp_flags & ZFS_READONLY) != 0);
+ ((zp->z_pflags & ZFS_READONLY) != 0);
XVA_SET_RTN(xvap, XAT_READONLY);
}
if (XVA_ISSET_REQ(xvap, XAT_SYSTEM)) {
xoap->xoa_system =
- ((pzp->zp_flags & ZFS_SYSTEM) != 0);
+ ((zp->z_pflags & ZFS_SYSTEM) != 0);
XVA_SET_RTN(xvap, XAT_SYSTEM);
}
if (XVA_ISSET_REQ(xvap, XAT_HIDDEN)) {
xoap->xoa_hidden =
- ((pzp->zp_flags & ZFS_HIDDEN) != 0);
+ ((zp->z_pflags & ZFS_HIDDEN) != 0);
XVA_SET_RTN(xvap, XAT_HIDDEN);
}
if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK)) {
xoap->xoa_nounlink =
- ((pzp->zp_flags & ZFS_NOUNLINK) != 0);
+ ((zp->z_pflags & ZFS_NOUNLINK) != 0);
XVA_SET_RTN(xvap, XAT_NOUNLINK);
}
if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE)) {
xoap->xoa_immutable =
- ((pzp->zp_flags & ZFS_IMMUTABLE) != 0);
+ ((zp->z_pflags & ZFS_IMMUTABLE) != 0);
XVA_SET_RTN(xvap, XAT_IMMUTABLE);
}
if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY)) {
xoap->xoa_appendonly =
- ((pzp->zp_flags & ZFS_APPENDONLY) != 0);
+ ((zp->z_pflags & ZFS_APPENDONLY) != 0);
XVA_SET_RTN(xvap, XAT_APPENDONLY);
}
if (XVA_ISSET_REQ(xvap, XAT_NODUMP)) {
xoap->xoa_nodump =
- ((pzp->zp_flags & ZFS_NODUMP) != 0);
+ ((zp->z_pflags & ZFS_NODUMP) != 0);
XVA_SET_RTN(xvap, XAT_NODUMP);
}
if (XVA_ISSET_REQ(xvap, XAT_OPAQUE)) {
xoap->xoa_opaque =
- ((pzp->zp_flags & ZFS_OPAQUE) != 0);
+ ((zp->z_pflags & ZFS_OPAQUE) != 0);
XVA_SET_RTN(xvap, XAT_OPAQUE);
}
if (XVA_ISSET_REQ(xvap, XAT_AV_QUARANTINED)) {
xoap->xoa_av_quarantined =
- ((pzp->zp_flags & ZFS_AV_QUARANTINED) != 0);
+ ((zp->z_pflags & ZFS_AV_QUARANTINED) != 0);
XVA_SET_RTN(xvap, XAT_AV_QUARANTINED);
}
if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED)) {
xoap->xoa_av_modified =
- ((pzp->zp_flags & ZFS_AV_MODIFIED) != 0);
+ ((zp->z_pflags & ZFS_AV_MODIFIED) != 0);
XVA_SET_RTN(xvap, XAT_AV_MODIFIED);
}
if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP) &&
- vp->v_type == VREG &&
- (pzp->zp_flags & ZFS_BONUS_SCANSTAMP)) {
- size_t len;
- dmu_object_info_t doi;
-
- /*
- * Only VREG files have anti-virus scanstamps, so we
- * won't conflict with symlinks in the bonus buffer.
- */
- dmu_object_info_from_db(zp->z_dbuf, &doi);
- len = sizeof (xoap->xoa_av_scanstamp) +
- sizeof (znode_phys_t);
- if (len <= doi.doi_bonus_size) {
- /*
- * pzp points to the start of the
- * znode_phys_t. pzp + 1 points to the
- * first byte after the znode_phys_t.
- */
- (void) memcpy(xoap->xoa_av_scanstamp,
- pzp + 1,
- sizeof (xoap->xoa_av_scanstamp));
- XVA_SET_RTN(xvap, XAT_AV_SCANSTAMP);
- }
+ vp->v_type == VREG) {
+ zfs_sa_get_scanstamp(zp, xvap);
}
if (XVA_ISSET_REQ(xvap, XAT_CREATETIME)) {
- ZFS_TIME_DECODE(&xoap->xoa_createtime, pzp->zp_crtime);
+ uint64_t times[2];
+
+ (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_CRTIME(zfsvfs),
+ times, sizeof (times));
+ ZFS_TIME_DECODE(&xoap->xoa_createtime, times);
XVA_SET_RTN(xvap, XAT_CREATETIME);
}
+
+ if (XVA_ISSET_REQ(xvap, XAT_REPARSE)) {
+ xoap->xoa_reparse = ((zp->z_pflags & ZFS_REPARSE) != 0);
+ XVA_SET_RTN(xvap, XAT_REPARSE);
+ }
}
- ZFS_TIME_DECODE(&vap->va_atime, pzp->zp_atime);
- ZFS_TIME_DECODE(&vap->va_mtime, pzp->zp_mtime);
- ZFS_TIME_DECODE(&vap->va_ctime, pzp->zp_ctime);
+ ZFS_TIME_DECODE(&vap->va_atime, zp->z_atime);
+ ZFS_TIME_DECODE(&vap->va_mtime, mtime);
+ ZFS_TIME_DECODE(&vap->va_ctime, ctime);
mutex_exit(&zp->z_lock);
- dmu_object_size_from_db(zp->z_dbuf, &vap->va_blksize, &vap->va_nblocks);
+ sa_object_size(zp->z_sa_hdl, &vap->va_blksize, &vap->va_nblocks);
if (zp->z_blksz == 0) {
/*
caller_context_t *ct)
{
znode_t *zp = VTOZ(vp);
- znode_phys_t *pzp;
zfsvfs_t *zfsvfs = zp->z_zfsvfs;
zilog_t *zilog;
dmu_tx_t *tx;
int trim_mask = 0;
uint64_t new_mode;
uint64_t new_uid, new_gid;
+ uint64_t xattr_obj = 0;
+ uint64_t mtime[2], ctime[2];
znode_t *attrzp;
int need_policy = FALSE;
- int err;
+ int err, err2;
zfs_fuid_info_t *fuidp = NULL;
xvattr_t *xvap = (xvattr_t *)vap; /* vap may be an xvattr_t * */
xoptattr_t *xoap;
zfs_acl_t *aclp = NULL;
boolean_t skipaclchk = (flags & ATTR_NOACLCHECK) ? B_TRUE : B_FALSE;
- boolean_t fuid_dirtied = B_FALSE;
+ boolean_t fuid_dirtied = B_FALSE;
+ sa_bulk_attr_t bulk[7], xattr_bulk[7];
+ int count = 0, xattr_count = 0;
if (mask == 0)
return (0);
ZFS_ENTER(zfsvfs);
ZFS_VERIFY_ZP(zp);
- pzp = zp->z_phys;
zilog = zfsvfs->z_log;
/*
/*
* Immutable files can only alter immutable bit and atime
*/
- if ((pzp->zp_flags & ZFS_IMMUTABLE) &&
+ if ((zp->z_pflags & ZFS_IMMUTABLE) &&
((mask & (AT_SIZE|AT_UID|AT_GID|AT_MTIME|AT_MODE)) ||
((mask & AT_XVATTR) && XVA_ISSET_REQ(xvap, XAT_CREATETIME)))) {
ZFS_EXIT(zfsvfs);
return (EPERM);
}
- if ((mask & AT_SIZE) && (pzp->zp_flags & ZFS_READONLY)) {
+ if ((mask & AT_SIZE) && (zp->z_pflags & ZFS_READONLY)) {
ZFS_EXIT(zfsvfs);
return (EPERM);
}
XVA_ISSET_REQ(xvap, XAT_READONLY) ||
XVA_ISSET_REQ(xvap, XAT_ARCHIVE) ||
XVA_ISSET_REQ(xvap, XAT_CREATETIME) ||
- XVA_ISSET_REQ(xvap, XAT_SYSTEM))))
+ XVA_ISSET_REQ(xvap, XAT_SYSTEM)))) {
need_policy = zfs_zaccess(zp, ACE_WRITE_ATTRIBUTES, 0,
skipaclchk, cr);
+ }
if (mask & (AT_UID|AT_GID)) {
int idmask = (mask & (AT_UID|AT_GID));
*/
if (!(mask & AT_MODE))
- vap->va_mode = pzp->zp_mode;
+ vap->va_mode = zp->z_mode;
/*
* Take ownership or chgrp to group we are a member of
}
mutex_enter(&zp->z_lock);
- oldva.va_mode = pzp->zp_mode;
- zfs_fuid_map_ids(zp, cr, &oldva.va_uid, &oldva.va_gid);
+ oldva.va_mode = zp->z_mode;
+ oldva.va_uid = zp->z_uid;
+ oldva.va_gid = zp->z_gid;
if (mask & AT_XVATTR) {
/*
* Update xvattr mask to include only those attributes
*/
if (XVA_ISSET_REQ(xvap, XAT_APPENDONLY)) {
if (xoap->xoa_appendonly !=
- ((pzp->zp_flags & ZFS_APPENDONLY) != 0)) {
+ ((zp->z_pflags & ZFS_APPENDONLY) != 0)) {
need_policy = TRUE;
} else {
XVA_CLR_REQ(xvap, XAT_APPENDONLY);
if (XVA_ISSET_REQ(xvap, XAT_NOUNLINK)) {
if (xoap->xoa_nounlink !=
- ((pzp->zp_flags & ZFS_NOUNLINK) != 0)) {
+ ((zp->z_pflags & ZFS_NOUNLINK) != 0)) {
need_policy = TRUE;
} else {
XVA_CLR_REQ(xvap, XAT_NOUNLINK);
if (XVA_ISSET_REQ(xvap, XAT_IMMUTABLE)) {
if (xoap->xoa_immutable !=
- ((pzp->zp_flags & ZFS_IMMUTABLE) != 0)) {
+ ((zp->z_pflags & ZFS_IMMUTABLE) != 0)) {
need_policy = TRUE;
} else {
XVA_CLR_REQ(xvap, XAT_IMMUTABLE);
if (XVA_ISSET_REQ(xvap, XAT_NODUMP)) {
if (xoap->xoa_nodump !=
- ((pzp->zp_flags & ZFS_NODUMP) != 0)) {
+ ((zp->z_pflags & ZFS_NODUMP) != 0)) {
need_policy = TRUE;
} else {
XVA_CLR_REQ(xvap, XAT_NODUMP);
if (XVA_ISSET_REQ(xvap, XAT_AV_MODIFIED)) {
if (xoap->xoa_av_modified !=
- ((pzp->zp_flags & ZFS_AV_MODIFIED) != 0)) {
+ ((zp->z_pflags & ZFS_AV_MODIFIED) != 0)) {
need_policy = TRUE;
} else {
XVA_CLR_REQ(xvap, XAT_AV_MODIFIED);
if ((vp->v_type != VREG &&
xoap->xoa_av_quarantined) ||
xoap->xoa_av_quarantined !=
- ((pzp->zp_flags & ZFS_AV_QUARANTINED) != 0)) {
+ ((zp->z_pflags & ZFS_AV_QUARANTINED) != 0)) {
need_policy = TRUE;
} else {
XVA_CLR_REQ(xvap, XAT_AV_QUARANTINED);
}
}
+ if (XVA_ISSET_REQ(xvap, XAT_REPARSE)) {
+ mutex_exit(&zp->z_lock);
+ ZFS_EXIT(zfsvfs);
+ return (EPERM);
+ }
+
if (need_policy == FALSE &&
(XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP) ||
XVA_ISSET_REQ(xvap, XAT_OPAQUE))) {
*/
mask = vap->va_mask;
+ if ((mask & (AT_UID | AT_GID))) {
+ (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_XATTR(zfsvfs), &xattr_obj,
+ sizeof (xattr_obj));
+
+ if (xattr_obj) {
+ err = zfs_zget(zp->z_zfsvfs, xattr_obj, &attrzp);
+ if (err)
+ goto out2;
+ }
+ if (mask & AT_UID) {
+ new_uid = zfs_fuid_create(zfsvfs,
+ (uint64_t)vap->va_uid, cr, ZFS_OWNER, &fuidp);
+ if (vap->va_uid != zp->z_uid &&
+ zfs_fuid_overquota(zfsvfs, B_FALSE, new_uid)) {
+ err = EDQUOT;
+ goto out2;
+ }
+ }
+
+ if (mask & AT_GID) {
+ new_gid = zfs_fuid_create(zfsvfs, (uint64_t)vap->va_gid,
+ cr, ZFS_GROUP, &fuidp);
+ if (new_gid != zp->z_gid &&
+ zfs_fuid_overquota(zfsvfs, B_TRUE, new_gid)) {
+ err = EDQUOT;
+ goto out2;
+ }
+ }
+ }
tx = dmu_tx_create(zfsvfs->z_os);
- dmu_tx_hold_bonus(tx, zp->z_id);
if (mask & AT_MODE) {
- uint64_t pmode = pzp->zp_mode;
-
+ uint64_t pmode = zp->z_mode;
new_mode = (pmode & S_IFMT) | (vap->va_mode & ~S_IFMT);
if (err = zfs_acl_chmod_setattr(zp, &aclp, new_mode))
goto out;
- if (pzp->zp_acl.z_acl_extern_obj) {
- /* Are we upgrading ACL from old V0 format to new V1 */
+
+ if (!zp->z_is_sa && ZFS_EXTERNAL_ACL(zp)) {
+ /*
+ * Are we upgrading ACL from old V0 format
+ * to V1 format?
+ */
if (zfsvfs->z_version <= ZPL_VERSION_FUID &&
- pzp->zp_acl.z_acl_version ==
+ ZNODE_ACL_VERSION(zp) ==
ZFS_ACL_VERSION_INITIAL) {
dmu_tx_hold_free(tx,
- pzp->zp_acl.z_acl_extern_obj, 0,
+ ZFS_EXTERNAL_ACL(zp), 0,
DMU_OBJECT_END);
dmu_tx_hold_write(tx, DMU_NEW_OBJECT,
0, aclp->z_acl_bytes);
} else {
- dmu_tx_hold_write(tx,
- pzp->zp_acl.z_acl_extern_obj, 0,
+ dmu_tx_hold_write(tx, ZFS_EXTERNAL_ACL(zp), 0,
aclp->z_acl_bytes);
}
- } else if (aclp->z_acl_bytes > ZFS_ACE_SPACE) {
+ } else if (!zp->z_is_sa && aclp->z_acl_bytes > ZFS_ACE_SPACE) {
dmu_tx_hold_write(tx, DMU_NEW_OBJECT,
0, aclp->z_acl_bytes);
}
+ dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_TRUE);
+ } else {
+ if ((mask & AT_XVATTR) &&
+ XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP))
+ dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_TRUE);
+ else
+ dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE);
}
- if (mask & (AT_UID | AT_GID)) {
- if (pzp->zp_xattr) {
- err = zfs_zget(zp->z_zfsvfs, pzp->zp_xattr, &attrzp);
- if (err)
- goto out;
- dmu_tx_hold_bonus(tx, attrzp->z_id);
- }
- if (mask & AT_UID) {
- new_uid = zfs_fuid_create(zfsvfs,
- (uint64_t)vap->va_uid, cr, ZFS_OWNER, &fuidp);
- if (new_uid != pzp->zp_uid &&
- zfs_usergroup_overquota(zfsvfs, B_FALSE, new_uid)) {
- err = EDQUOT;
- goto out;
- }
- }
-
- if (mask & AT_GID) {
- new_gid = zfs_fuid_create(zfsvfs, (uint64_t)vap->va_gid,
- cr, ZFS_GROUP, &fuidp);
- if (new_gid != pzp->zp_gid &&
- zfs_usergroup_overquota(zfsvfs, B_TRUE, new_gid)) {
- err = EDQUOT;
- goto out;
- }
- }
- fuid_dirtied = zfsvfs->z_fuid_dirty;
- if (fuid_dirtied) {
- if (zfsvfs->z_fuid_obj == 0) {
- dmu_tx_hold_bonus(tx, DMU_NEW_OBJECT);
- dmu_tx_hold_write(tx, DMU_NEW_OBJECT, 0,
- FUID_SIZE_ESTIMATE(zfsvfs));
- dmu_tx_hold_zap(tx, MASTER_NODE_OBJ,
- FALSE, NULL);
- } else {
- dmu_tx_hold_bonus(tx, zfsvfs->z_fuid_obj);
- dmu_tx_hold_write(tx, zfsvfs->z_fuid_obj, 0,
- FUID_SIZE_ESTIMATE(zfsvfs));
- }
- }
+ if (attrzp) {
+ dmu_tx_hold_sa(tx, attrzp->z_sa_hdl, B_FALSE);
}
+ fuid_dirtied = zfsvfs->z_fuid_dirty;
+ if (fuid_dirtied)
+ zfs_fuid_txhold(zfsvfs, tx);
+
+ zfs_sa_upgrade_txholds(tx, zp);
+
err = dmu_tx_assign(tx, TXG_NOWAIT);
if (err) {
if (err == ERESTART)
goto out;
}
- dmu_buf_will_dirty(zp->z_dbuf, tx);
-
+ count = 0;
/*
* Set each attribute requested.
* We group settings according to the locks they need to acquire.
mutex_enter(&zp->z_lock);
+ SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), NULL,
+ &zp->z_pflags, sizeof (zp->z_pflags));
+
+ if (attrzp) {
+ mutex_enter(&attrzp->z_lock);
+ SA_ADD_BULK_ATTR(xattr_bulk, xattr_count,
+ SA_ZPL_FLAGS(zfsvfs), NULL, &attrzp->z_pflags,
+ sizeof (attrzp->z_pflags));
+ }
+
+ if (mask & (AT_UID|AT_GID)) {
+
+ if (mask & AT_UID) {
+ SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zfsvfs), NULL,
+ &new_uid, sizeof (new_uid));
+ zp->z_uid = zfs_fuid_map_id(zfsvfs, new_uid,
+ cr, ZFS_OWNER);
+ if (attrzp) {
+ SA_ADD_BULK_ATTR(xattr_bulk, xattr_count,
+ SA_ZPL_UID(zfsvfs), NULL, &new_uid,
+ sizeof (new_uid));
+ attrzp->z_uid = zp->z_uid;
+ }
+ }
+
+ if (mask & AT_GID) {
+ SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zfsvfs),
+ NULL, &new_gid, sizeof (new_gid));
+ zp->z_gid = zfs_fuid_map_id(zfsvfs, new_gid, cr,
+ ZFS_GROUP);
+ if (attrzp) {
+ SA_ADD_BULK_ATTR(xattr_bulk, xattr_count,
+ SA_ZPL_GID(zfsvfs), NULL, &new_gid,
+ sizeof (new_gid));
+ attrzp->z_gid = zp->z_gid;
+ }
+ }
+ if (!(mask & AT_MODE)) {
+ SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs),
+ NULL, &new_mode, sizeof (new_mode));
+ new_mode = zp->z_mode;
+ }
+ err = zfs_acl_chown_setattr(zp);
+ ASSERT(err == 0);
+ if (attrzp) {
+ err = zfs_acl_chown_setattr(attrzp);
+ ASSERT(err == 0);
+ }
+ }
+
if (mask & AT_MODE) {
mutex_enter(&zp->z_acl_lock);
- zp->z_phys->zp_mode = new_mode;
+ SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zfsvfs), NULL,
+ &new_mode, sizeof (new_mode));
+ zp->z_mode = new_mode;
+ ASSERT3U((uintptr_t)aclp, !=, NULL);
err = zfs_aclset_common(zp, aclp, cr, tx);
ASSERT3U(err, ==, 0);
zp->z_acl_cached = aclp;
}
if (attrzp)
- mutex_enter(&attrzp->z_lock);
+ mutex_exit(&attrzp->z_lock);
- if (mask & AT_UID) {
- pzp->zp_uid = new_uid;
- if (attrzp)
- attrzp->z_phys->zp_uid = new_uid;
+ if (mask & AT_ATIME) {
+ ZFS_TIME_ENCODE(&vap->va_atime, zp->z_atime);
+ SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zfsvfs), NULL,
+ &zp->z_atime, sizeof (zp->z_atime));
}
- if (mask & AT_GID) {
- pzp->zp_gid = new_gid;
- if (attrzp)
- attrzp->z_phys->zp_gid = new_gid;
+ if (mask & AT_MTIME) {
+ ZFS_TIME_ENCODE(&vap->va_mtime, mtime);
+ SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs), NULL,
+ mtime, sizeof (mtime));
}
- if (attrzp)
- mutex_exit(&attrzp->z_lock);
-
- if (mask & AT_ATIME)
- ZFS_TIME_ENCODE(&vap->va_atime, pzp->zp_atime);
-
- if (mask & AT_MTIME)
- ZFS_TIME_ENCODE(&vap->va_mtime, pzp->zp_mtime);
-
/* XXX - shouldn't this be done *before* the ATIME/MTIME checks? */
- if (mask & AT_SIZE)
- zfs_time_stamper_locked(zp, CONTENT_MODIFIED, tx);
- else if (mask != 0)
- zfs_time_stamper_locked(zp, STATE_CHANGED, tx);
+ if (mask & AT_SIZE && !(mask & AT_MTIME)) {
+ SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MTIME(zfsvfs),
+ NULL, mtime, sizeof (mtime));
+ SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL,
+ &ctime, sizeof (ctime));
+ zfs_tstamp_update_setup(zp, CONTENT_MODIFIED, mtime, ctime,
+ B_TRUE);
+ } else if (mask != 0) {
+ SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_CTIME(zfsvfs), NULL,
+ &ctime, sizeof (ctime));
+ zfs_tstamp_update_setup(zp, STATE_CHANGED, mtime, ctime,
+ B_TRUE);
+ if (attrzp) {
+ SA_ADD_BULK_ATTR(xattr_bulk, xattr_count,
+ SA_ZPL_CTIME(zfsvfs), NULL,
+ &ctime, sizeof (ctime));
+ zfs_tstamp_update_setup(attrzp, STATE_CHANGED,
+ mtime, ctime, B_TRUE);
+ }
+ }
/*
* Do this after setting timestamps to prevent timestamp
* update from toggling bit
XVA_SET_REQ(xvap, XAT_AV_QUARANTINED);
}
- if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP)) {
- size_t len;
- dmu_object_info_t doi;
-
+ if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP))
ASSERT(vp->v_type == VREG);
- /* Grow the bonus buffer if necessary. */
- dmu_object_info_from_db(zp->z_dbuf, &doi);
- len = sizeof (xoap->xoa_av_scanstamp) +
- sizeof (znode_phys_t);
- if (len > doi.doi_bonus_size)
- VERIFY(dmu_set_bonus(zp->z_dbuf, len, tx) == 0);
- }
- zfs_xvattr_set(zp, xvap);
+ zfs_xvattr_set(zp, xvap, tx);
}
if (fuid_dirtied)
mutex_exit(&zp->z_lock);
out:
+ if (err == 0 && attrzp) {
+ err2 = sa_bulk_update(attrzp->z_sa_hdl, xattr_bulk,
+ xattr_count, tx);
+ ASSERT(err2 == 0);
+ }
+
if (attrzp)
VN_RELE(ZTOV(attrzp));
-
if (aclp)
zfs_acl_free(aclp);
fuidp = NULL;
}
- if (err)
+ if (err) {
dmu_tx_abort(tx);
- else
+ if (err == ERESTART)
+ goto top;
+ } else {
+ err2 = sa_bulk_update(zp->z_sa_hdl, bulk, count, tx);
dmu_tx_commit(tx);
+ }
+
- if (err == ERESTART)
- goto top;
+out2:
+ if (zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS)
+ zil_commit(zilog, UINT64_MAX, 0);
ZFS_EXIT(zfsvfs);
return (err);
zfs_zlock_t *zl;
znode_t *zp = tdzp;
uint64_t rootid = zp->z_zfsvfs->z_root;
- uint64_t *oidp = &zp->z_id;
+ uint64_t oidp = zp->z_id;
krwlock_t *rwlp = &szp->z_parent_lock;
krw_t rw = RW_WRITER;
zfs_rename_unlock(&zl);
*zlpp = NULL;
zp = tdzp;
- oidp = &zp->z_id;
+ oidp = zp->z_id;
rwlp = &szp->z_parent_lock;
rw = RW_WRITER;
continue;
zl->zl_next = *zlpp;
*zlpp = zl;
- if (*oidp == szp->z_id) /* We're a descendant of szp */
+ if (oidp == szp->z_id) /* We're a descendant of szp */
return (EINVAL);
- if (*oidp == rootid) /* We've hit the top */
+ if (oidp == rootid) /* We've hit the top */
return (0);
if (rw == RW_READER) { /* i.e. not the first pass */
- int error = zfs_zget(zp->z_zfsvfs, *oidp, &zp);
+ int error = zfs_zget(zp->z_zfsvfs, oidp, &zp);
if (error)
return (error);
zl->zl_znode = zp;
}
- oidp = &zp->z_phys->zp_parent;
+ (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_PARENT(zp->z_zfsvfs),
+ &oidp, sizeof (oidp));
rwlp = &zp->z_parent_lock;
rw = RW_READER;
if (VOP_REALVP(tdvp, &realvp, ct) == 0)
tdvp = realvp;
- if (tdvp->v_vfsp != sdvp->v_vfsp) {
+ if (tdvp->v_vfsp != sdvp->v_vfsp || zfsctl_is_node(tdvp)) {
ZFS_EXIT(zfsvfs);
return (EXDEV);
}
* by renaming a linked file into/outof an attribute directory.
* See the comment in zfs_link() for why this is considered bad.
*/
- if ((tdzp->z_phys->zp_flags & ZFS_XATTR) !=
- (sdzp->z_phys->zp_flags & ZFS_XATTR)) {
+ if ((tdzp->z_pflags & ZFS_XATTR) != (sdzp->z_pflags & ZFS_XATTR)) {
ZFS_EXIT(zfsvfs);
return (EINVAL);
}
}
}
+ /*
+ * If the source and destination directories are the same, we should
+ * grab the z_name_lock of that directory only once.
+ */
+ if (sdzp == tdzp) {
+ zflg |= ZHAVELOCK;
+ rw_enter(&sdzp->z_name_lock, RW_READER);
+ }
+
if (cmp < 0) {
serr = zfs_dirent_lock(&sdl, sdzp, snm, &szp,
ZEXISTS | zflg, NULL, NULL);
if (tzp)
VN_RELE(ZTOV(tzp));
}
+
+ if (sdzp == tdzp)
+ rw_exit(&sdzp->z_name_lock);
+
if (strcmp(snm, "..") == 0)
serr = EINVAL;
ZFS_EXIT(zfsvfs);
if (terr) {
zfs_dirent_unlock(sdl);
VN_RELE(ZTOV(szp));
+
+ if (sdzp == tdzp)
+ rw_exit(&sdzp->z_name_lock);
+
if (strcmp(tnm, "..") == 0)
terr = EINVAL;
ZFS_EXIT(zfsvfs);
}
tx = dmu_tx_create(zfsvfs->z_os);
- dmu_tx_hold_bonus(tx, szp->z_id); /* nlink changes */
- dmu_tx_hold_bonus(tx, sdzp->z_id); /* nlink changes */
+ dmu_tx_hold_sa(tx, szp->z_sa_hdl, B_FALSE);
+ dmu_tx_hold_sa(tx, sdzp->z_sa_hdl, B_FALSE);
dmu_tx_hold_zap(tx, sdzp->z_id, FALSE, snm);
dmu_tx_hold_zap(tx, tdzp->z_id, TRUE, tnm);
- if (sdzp != tdzp)
- dmu_tx_hold_bonus(tx, tdzp->z_id); /* nlink changes */
- if (tzp)
- dmu_tx_hold_bonus(tx, tzp->z_id); /* parent changes */
+ if (sdzp != tdzp) {
+ dmu_tx_hold_sa(tx, tdzp->z_sa_hdl, B_FALSE);
+ zfs_sa_upgrade_txholds(tx, tdzp);
+ }
+ if (tzp) {
+ dmu_tx_hold_sa(tx, tzp->z_sa_hdl, B_FALSE);
+ zfs_sa_upgrade_txholds(tx, tzp);
+ }
+
+ zfs_sa_upgrade_txholds(tx, szp);
dmu_tx_hold_zap(tx, zfsvfs->z_unlinkedobj, FALSE, NULL);
error = dmu_tx_assign(tx, TXG_NOWAIT);
if (error) {
zfs_rename_unlock(&zl);
zfs_dirent_unlock(sdl);
zfs_dirent_unlock(tdl);
+
+ if (sdzp == tdzp)
+ rw_exit(&sdzp->z_name_lock);
+
VN_RELE(ZTOV(szp));
if (tzp)
VN_RELE(ZTOV(tzp));
if (error == 0) {
error = zfs_link_create(tdl, szp, tx, ZRENAMING);
if (error == 0) {
- szp->z_phys->zp_flags |= ZFS_AV_MODIFIED;
+ szp->z_pflags |= ZFS_AV_MODIFIED;
- error = zfs_link_destroy(sdl, szp, tx, ZRENAMING, NULL);
- ASSERT(error == 0);
+ error = sa_update(szp->z_sa_hdl, SA_ZPL_FLAGS(zfsvfs),
+ (void *)&szp->z_pflags, sizeof (uint64_t), tx);
+ ASSERT3U(error, ==, 0);
- zfs_log_rename(zilog, tx,
- TX_RENAME | (flags & FIGNORECASE ? TX_CI : 0),
- sdzp, sdl->dl_name, tdzp, tdl->dl_name, szp);
+ error = zfs_link_destroy(sdl, szp, tx, ZRENAMING, NULL);
+ if (error == 0) {
+ zfs_log_rename(zilog, tx, TX_RENAME |
+ (flags & FIGNORECASE ? TX_CI : 0),
+ sdzp, sdl->dl_name, tdzp, tdl->dl_name,
+ szp);
- /* Update path information for the target vnode */
- vn_renamepath(tdvp, ZTOV(szp), tnm, strlen(tnm));
+ /*
+ * Update path information for the target vnode
+ */
+ vn_renamepath(tdvp, ZTOV(szp), tnm,
+ strlen(tnm));
+ } else {
+ /*
+ * At this point, we have successfully created
+ * the target name, but have failed to remove
+ * the source name. Since the create was done
+ * with the ZRENAMING flag, there are
+ * complications; for one, the link count is
+ * wrong. The easiest way to deal with this
+ * is to remove the newly created target, and
+ * return the original error. This must
+ * succeed; fortunately, it is very unlikely to
+ * fail, since we just created it.
+ */
+ VERIFY3U(zfs_link_destroy(tdl, szp, tx,
+ ZRENAMING, NULL), ==, 0);
+ }
}
}
zfs_dirent_unlock(sdl);
zfs_dirent_unlock(tdl);
+ if (sdzp == tdzp)
+ rw_exit(&sdzp->z_name_lock);
+
+
VN_RELE(ZTOV(szp));
if (tzp)
VN_RELE(ZTOV(tzp));
+ if (zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS)
+ zil_commit(zilog, UINT64_MAX, 0);
+
ZFS_EXIT(zfsvfs);
return (error);
}
dmu_tx_t *tx;
zfsvfs_t *zfsvfs = dzp->z_zfsvfs;
zilog_t *zilog;
- int len = strlen(link);
+ uint64_t len = strlen(link);
int error;
int zflg = ZNEW;
zfs_acl_ids_t acl_ids;
boolean_t fuid_dirtied;
+ uint64_t txtype = TX_SYMLINK;
ASSERT(vap->va_type == VLNK);
}
if (flags & FIGNORECASE)
zflg |= ZCILOOK;
-top:
- if (error = zfs_zaccess(dzp, ACE_ADD_FILE, 0, B_FALSE, cr)) {
- ZFS_EXIT(zfsvfs);
- return (error);
- }
if (len > MAXPATHLEN) {
ZFS_EXIT(zfsvfs);
return (ENAMETOOLONG);
}
+ if ((error = zfs_acl_ids_create(dzp, 0,
+ vap, cr, NULL, &acl_ids)) != 0) {
+ ZFS_EXIT(zfsvfs);
+ return (error);
+ }
+top:
/*
* Attempt to lock directory; fail if entry already exists.
*/
error = zfs_dirent_lock(&dl, dzp, name, &zp, zflg, NULL, NULL);
if (error) {
+ zfs_acl_ids_free(&acl_ids);
+ ZFS_EXIT(zfsvfs);
+ return (error);
+ }
+
+ if (error = zfs_zaccess(dzp, ACE_ADD_FILE, 0, B_FALSE, cr)) {
+ zfs_acl_ids_free(&acl_ids);
+ zfs_dirent_unlock(dl);
ZFS_EXIT(zfsvfs);
return (error);
}
- VERIFY(0 == zfs_acl_ids_create(dzp, 0, vap, cr, NULL, &acl_ids));
if (zfs_acl_ids_overquota(zfsvfs, &acl_ids)) {
zfs_acl_ids_free(&acl_ids);
zfs_dirent_unlock(dl);
tx = dmu_tx_create(zfsvfs->z_os);
fuid_dirtied = zfsvfs->z_fuid_dirty;
dmu_tx_hold_write(tx, DMU_NEW_OBJECT, 0, MAX(1, len));
- dmu_tx_hold_bonus(tx, dzp->z_id);
dmu_tx_hold_zap(tx, dzp->z_id, TRUE, name);
- if (acl_ids.z_aclp->z_acl_bytes > ZFS_ACE_SPACE)
- dmu_tx_hold_write(tx, DMU_NEW_OBJECT, 0, SPA_MAXBLOCKSIZE);
+ dmu_tx_hold_sa_create(tx, acl_ids.z_aclp->z_acl_bytes +
+ ZFS_SA_BASE_ATTR_SIZE + len);
+ dmu_tx_hold_sa(tx, dzp->z_sa_hdl, B_FALSE);
+ if (!zfsvfs->z_use_sa && acl_ids.z_aclp->z_acl_bytes > ZFS_ACE_SPACE) {
+ dmu_tx_hold_write(tx, DMU_NEW_OBJECT, 0,
+ acl_ids.z_aclp->z_acl_bytes);
+ }
if (fuid_dirtied)
zfs_fuid_txhold(zfsvfs, tx);
error = dmu_tx_assign(tx, TXG_NOWAIT);
if (error) {
- zfs_acl_ids_free(&acl_ids);
zfs_dirent_unlock(dl);
if (error == ERESTART) {
dmu_tx_wait(tx);
dmu_tx_abort(tx);
goto top;
}
+ zfs_acl_ids_free(&acl_ids);
dmu_tx_abort(tx);
ZFS_EXIT(zfsvfs);
return (error);
}
- dmu_buf_will_dirty(dzp->z_dbuf, tx);
-
/*
* Create a new object for the symlink.
- * Put the link content into bonus buffer if it will fit;
- * otherwise, store it just like any other file data.
+ * for version 4 ZPL datsets the symlink will be an SA attribute
*/
- if (sizeof (znode_phys_t) + len <= dmu_bonus_max()) {
- zfs_mknode(dzp, vap, tx, cr, 0, &zp, len, &acl_ids);
- if (len != 0)
- bcopy(link, zp->z_phys + 1, len);
- } else {
- dmu_buf_t *dbp;
-
- zfs_mknode(dzp, vap, tx, cr, 0, &zp, 0, &acl_ids);
+ zfs_mknode(dzp, vap, tx, cr, 0, &zp, &acl_ids);
- if (fuid_dirtied)
- zfs_fuid_sync(zfsvfs, tx);
- /*
- * Nothing can access the znode yet so no locking needed
- * for growing the znode's blocksize.
- */
- zfs_grow_blocksize(zp, len, tx);
-
- VERIFY(0 == dmu_buf_hold(zfsvfs->z_os,
- zp->z_id, 0, FTAG, &dbp));
- dmu_buf_will_dirty(dbp, tx);
+ if (fuid_dirtied)
+ zfs_fuid_sync(zfsvfs, tx);
- ASSERT3U(len, <=, dbp->db_size);
- bcopy(link, dbp->db_data, len);
- dmu_buf_rele(dbp, FTAG);
- }
- zp->z_phys->zp_size = len;
+ if (zp->z_is_sa)
+ error = sa_update(zp->z_sa_hdl, SA_ZPL_SYMLINK(zfsvfs),
+ link, len, tx);
+ else
+ zfs_sa_symlink(zp, link, len, tx);
+ zp->z_size = len;
+ (void) sa_update(zp->z_sa_hdl, SA_ZPL_SIZE(zfsvfs),
+ &zp->z_size, sizeof (zp->z_size), tx);
/*
* Insert the new object into the directory.
*/
(void) zfs_link_create(dl, zp, tx, ZNEW);
- if (error == 0) {
- uint64_t txtype = TX_SYMLINK;
- if (flags & FIGNORECASE)
- txtype |= TX_CI;
- zfs_log_symlink(zilog, tx, txtype, dzp, zp, name, link);
- }
+
+ if (flags & FIGNORECASE)
+ txtype |= TX_CI;
+ zfs_log_symlink(zilog, tx, txtype, dzp, zp, name, link);
zfs_acl_ids_free(&acl_ids);
VN_RELE(ZTOV(zp));
+ if (zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS)
+ zil_commit(zilog, UINT64_MAX, 0);
+
ZFS_EXIT(zfsvfs);
return (error);
}
{
znode_t *zp = VTOZ(vp);
zfsvfs_t *zfsvfs = zp->z_zfsvfs;
- size_t bufsz;
int error;
ZFS_ENTER(zfsvfs);
ZFS_VERIFY_ZP(zp);
- bufsz = (size_t)zp->z_phys->zp_size;
- if (bufsz + sizeof (znode_phys_t) <= zp->z_dbuf->db_size) {
- error = uiomove(zp->z_phys + 1,
- MIN((size_t)bufsz, uio->uio_resid), UIO_READ, uio);
- } else {
- dmu_buf_t *dbp;
- error = dmu_buf_hold(zfsvfs->z_os, zp->z_id, 0, FTAG, &dbp);
- if (error) {
- ZFS_EXIT(zfsvfs);
- return (error);
- }
- error = uiomove(dbp->db_data,
- MIN((size_t)bufsz, uio->uio_resid), UIO_READ, uio);
- dmu_buf_rele(dbp, FTAG);
- }
+ if (zp->z_is_sa)
+ error = sa_lookup_uio(zp->z_sa_hdl,
+ SA_ZPL_SYMLINK(zfsvfs), uio);
+ else
+ error = zfs_sa_readlink(zp, uio);
ZFS_ACCESSTIME_STAMP(zfsvfs, zp);
+
ZFS_EXIT(zfsvfs);
return (error);
}
vnode_t *realvp;
int error;
int zf = ZNEW;
- uid_t owner;
+ uint64_t parent;
ASSERT(tdvp->v_type == VDIR);
if (VOP_REALVP(svp, &realvp, ct) == 0)
svp = realvp;
- if (svp->v_vfsp != tdvp->v_vfsp) {
+ /*
+ * POSIX dictates that we return EPERM here.
+ * Better choices include ENOTSUP or EISDIR.
+ */
+ if (svp->v_type == VDIR) {
+ ZFS_EXIT(zfsvfs);
+ return (EPERM);
+ }
+
+ if (svp->v_vfsp != tdvp->v_vfsp || zfsctl_is_node(svp)) {
ZFS_EXIT(zfsvfs);
return (EXDEV);
}
+
szp = VTOZ(svp);
ZFS_VERIFY_ZP(szp);
+ /* Prevent links to .zfs/shares files */
+
+ if ((error = sa_lookup(szp->z_sa_hdl, SA_ZPL_PARENT(zfsvfs),
+ &parent, sizeof (uint64_t))) != 0) {
+ ZFS_EXIT(zfsvfs);
+ return (error);
+ }
+ if (parent == zfsvfs->z_shares_dir) {
+ ZFS_EXIT(zfsvfs);
+ return (EPERM);
+ }
+
if (zfsvfs->z_utf8 && u8_validate(name,
strlen(name), NULL, U8_VALIDATE_ENTIRE, &error) < 0) {
ZFS_EXIT(zfsvfs);
if (flags & FIGNORECASE)
zf |= ZCILOOK;
-top:
/*
* We do not support links between attributes and non-attributes
* because of the potential security risk of creating links
* into "normal" file space in order to circumvent restrictions
* imposed in attribute space.
*/
- if ((szp->z_phys->zp_flags & ZFS_XATTR) !=
- (dzp->z_phys->zp_flags & ZFS_XATTR)) {
+ if ((szp->z_pflags & ZFS_XATTR) != (dzp->z_pflags & ZFS_XATTR)) {
ZFS_EXIT(zfsvfs);
return (EINVAL);
}
- /*
- * POSIX dictates that we return EPERM here.
- * Better choices include ENOTSUP or EISDIR.
- */
- if (svp->v_type == VDIR) {
- ZFS_EXIT(zfsvfs);
- return (EPERM);
- }
- owner = zfs_fuid_map_id(zfsvfs, szp->z_phys->zp_uid, cr, ZFS_OWNER);
- if (owner != crgetuid(cr) &&
+ if (szp->z_uid != crgetuid(cr) &&
secpolicy_basic_link(cr) != 0) {
ZFS_EXIT(zfsvfs);
return (EPERM);
return (error);
}
+top:
/*
* Attempt to lock directory; fail if entry already exists.
*/
}
tx = dmu_tx_create(zfsvfs->z_os);
- dmu_tx_hold_bonus(tx, szp->z_id);
+ dmu_tx_hold_sa(tx, szp->z_sa_hdl, B_FALSE);
dmu_tx_hold_zap(tx, dzp->z_id, TRUE, name);
+ zfs_sa_upgrade_txholds(tx, szp);
+ zfs_sa_upgrade_txholds(tx, dzp);
error = dmu_tx_assign(tx, TXG_NOWAIT);
if (error) {
zfs_dirent_unlock(dl);
vnevent_link(svp, ct);
}
+ if (zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS)
+ zil_commit(zilog, UINT64_MAX, 0);
+
ZFS_EXIT(zfsvfs);
return (error);
}
dmu_tx_t *tx;
u_offset_t off, koff;
size_t len, klen;
- uint64_t filesz;
int err;
- filesz = zp->z_phys->zp_size;
off = pp->p_offset;
len = PAGESIZE;
/*
* multiple pages so that we write a full block (thus avoiding
* a read-modify-write).
*/
- if (off < filesz && zp->z_blksz > PAGESIZE) {
+ if (off < zp->z_size && zp->z_blksz > PAGESIZE) {
klen = P2ROUNDUP((ulong_t)zp->z_blksz, PAGESIZE);
koff = ISP2(klen) ? P2ALIGN(off, (u_offset_t)klen) : 0;
- ASSERT(koff <= filesz);
- if (koff + klen > filesz)
- klen = P2ROUNDUP(filesz - koff, (uint64_t)PAGESIZE);
+ ASSERT(koff <= zp->z_size);
+ if (koff + klen > zp->z_size)
+ klen = P2ROUNDUP(zp->z_size - koff, (uint64_t)PAGESIZE);
pp = pvn_write_kluster(vp, pp, &off, &len, koff, klen, flags);
}
ASSERT3U(btop(len), ==, btopr(len));
/*
* Can't push pages past end-of-file.
*/
- if (off >= filesz) {
+ if (off >= zp->z_size) {
/* ignore all pages */
err = 0;
goto out;
- } else if (off + len > filesz) {
- int npages = btopr(filesz - off);
+ } else if (off + len > zp->z_size) {
+ int npages = btopr(zp->z_size - off);
page_t *trunc;
page_list_break(&pp, &trunc, npages);
/* ignore pages past end of file */
if (trunc)
pvn_write_done(trunc, flags);
- len = filesz - off;
+ len = zp->z_size - off;
}
- if (zfs_usergroup_overquota(zfsvfs, B_FALSE, zp->z_phys->zp_uid) ||
- zfs_usergroup_overquota(zfsvfs, B_TRUE, zp->z_phys->zp_gid)) {
+ if (zfs_owner_overquota(zfsvfs, zp, B_FALSE) ||
+ zfs_owner_overquota(zfsvfs, zp, B_TRUE)) {
err = EDQUOT;
goto out;
}
top:
tx = dmu_tx_create(zfsvfs->z_os);
dmu_tx_hold_write(tx, zp->z_id, off, len);
- dmu_tx_hold_bonus(tx, zp->z_id);
+
+ dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE);
+ zfs_sa_upgrade_txholds(tx, zp);
err = dmu_tx_assign(tx, TXG_NOWAIT);
if (err != 0) {
if (err == ERESTART) {
}
if (err == 0) {
- zfs_time_stamper(zp, CONTENT_MODIFIED, tx);
+ uint64_t mtime[2], ctime[2];
+ sa_bulk_attr_t bulk[3];
+ int count = 0;
+
+ 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);
+ SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zfsvfs), NULL,
+ &zp->z_pflags, 8);
+ zfs_tstamp_update_setup(zp, CONTENT_MODIFIED, mtime, ctime,
+ B_TRUE);
zfs_log_write(zfsvfs->z_log, tx, TX_WRITE, zp, off, len, 0);
}
dmu_tx_commit(tx);
}
rl = zfs_range_lock(zp, io_off, io_len, RL_WRITER);
- if (off > zp->z_phys->zp_size) {
+ if (off > zp->z_size) {
/* past end of file */
zfs_range_unlock(rl);
ZFS_EXIT(zfsvfs);
return (0);
}
- len = MIN(io_len, P2ROUNDUP(zp->z_phys->zp_size, PAGESIZE) - io_off);
+ len = MIN(io_len, P2ROUNDUP(zp->z_size, PAGESIZE) - io_off);
for (off = io_off; io_off < off + len; io_off += io_len) {
if ((flags & B_INVAL) || ((flags & B_ASYNC) == 0)) {
}
out:
zfs_range_unlock(rl);
- if ((flags & B_ASYNC) == 0)
+ if ((flags & B_ASYNC) == 0 || zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS)
zil_commit(zfsvfs->z_log, UINT64_MAX, zp->z_id);
ZFS_EXIT(zfsvfs);
return (error);
int error;
rw_enter(&zfsvfs->z_teardown_inactive_lock, RW_READER);
- if (zp->z_dbuf == NULL) {
+ if (zp->z_sa_hdl == NULL) {
/*
* The fs has been unmounted, or we did a
* suspend/resume and this file no longer exists.
}
mutex_enter(&zp->z_lock);
- vp->v_count = 0; /* count arrives as 1 */
+ mutex_enter(&vp->v_lock);
+ ASSERT(vp->v_count == 1);
+ vp->v_count = 0;
+ mutex_exit(&vp->v_lock);
mutex_exit(&zp->z_lock);
rw_exit(&zfsvfs->z_teardown_inactive_lock);
zfs_znode_free(zp);
if (zp->z_atime_dirty && zp->z_unlinked == 0) {
dmu_tx_t *tx = dmu_tx_create(zfsvfs->z_os);
- dmu_tx_hold_bonus(tx, zp->z_id);
+ dmu_tx_hold_sa(tx, zp->z_sa_hdl, B_FALSE);
+ zfs_sa_upgrade_txholds(tx, zp);
error = dmu_tx_assign(tx, TXG_WAIT);
if (error) {
dmu_tx_abort(tx);
} else {
- dmu_buf_will_dirty(zp->z_dbuf, tx);
mutex_enter(&zp->z_lock);
+ (void) sa_update(zp->z_sa_hdl, SA_ZPL_ATIME(zfsvfs),
+ (void *)&zp->z_atime, sizeof (zp->z_atime), tx);
zp->z_atime_dirty = 0;
mutex_exit(&zp->z_lock);
dmu_tx_commit(tx);
{
znode_t *zp = VTOZ(vp);
zfsvfs_t *zfsvfs = zp->z_zfsvfs;
- int error;
ZFS_ENTER(zfsvfs);
ZFS_VERIFY_ZP(zp);
* return an error, but we don't worry about races between this
* function and zfs_map().
*/
- if (zp->z_mapcnt > 0 && MANDMODE((mode_t)zp->z_phys->zp_mode)) {
+ if (zp->z_mapcnt > 0 && MANDMODE(zp->z_mode)) {
ZFS_EXIT(zfsvfs);
return (EAGAIN);
}
- error = fs_frlock(vp, cmd, bfp, flag, offset, flk_cbp, cr, ct);
ZFS_EXIT(zfsvfs);
- return (error);
+ return (fs_frlock(vp, cmd, bfp, flag, offset, flk_cbp, cr, ct));
}
/*
ZFS_ENTER(zfsvfs);
ZFS_VERIFY_ZP(zp);
- if ((prot & PROT_WRITE) &&
- (zp->z_phys->zp_flags & (ZFS_IMMUTABLE | ZFS_READONLY |
- ZFS_APPENDONLY))) {
+ if ((prot & PROT_WRITE) && (zp->z_pflags &
+ (ZFS_IMMUTABLE | ZFS_READONLY | ZFS_APPENDONLY))) {
ZFS_EXIT(zfsvfs);
return (EPERM);
}
if ((prot & (PROT_READ | PROT_EXEC)) &&
- (zp->z_phys->zp_flags & ZFS_AV_QUARANTINED)) {
+ (zp->z_pflags & ZFS_AV_QUARANTINED)) {
ZFS_EXIT(zfsvfs);
return (EACCES);
}
/*
* If file is locked, disallow mapping.
*/
- if (MANDMODE((mode_t)zp->z_phys->zp_mode) && vn_has_flocks(vp)) {
+ if (MANDMODE(zp->z_mode) && vn_has_flocks(vp)) {
ZFS_EXIT(zfsvfs);
return (EAGAIN);
}
znode_t *zp = VTOZ(vp);
zfsvfs_t *zfsvfs = zp->z_zfsvfs;
uint32_t gen;
+ uint64_t gen64;
uint64_t object = zp->z_id;
zfid_short_t *zfid;
- int size, i;
+ int size, i, error;
ZFS_ENTER(zfsvfs);
ZFS_VERIFY_ZP(zp);
- gen = (uint32_t)zp->z_gen;
+
+ if ((error = sa_lookup(zp->z_sa_hdl, SA_ZPL_GEN(zfsvfs),
+ &gen64, sizeof (uint64_t))) != 0) {
+ ZFS_EXIT(zfsvfs);
+ return (error);
+ }
+
+ gen = (uint32_t)gen64;
size = (zfsvfs->z_parent != zfsvfs) ? LONG_FID_LEN : SHORT_FID_LEN;
if (fidp->fid_len < size) {
*valp = (ulong_t)SPA_MINBLOCKSIZE;
return (0);
+ case _PC_TIMESTAMP_RESOLUTION:
+ /* nanosecond timestamp resolution */
+ *valp = 1L;
+ return (0);
+
default:
return (fs_pathconf(vp, cmd, valp, cr, ct));
}
zfsvfs_t *zfsvfs = zp->z_zfsvfs;
int error;
boolean_t skipaclchk = (flag & ATTR_NOACLCHECK) ? B_TRUE : B_FALSE;
+ zilog_t *zilog = zfsvfs->z_log;
ZFS_ENTER(zfsvfs);
ZFS_VERIFY_ZP(zp);
+
error = zfs_setacl(zp, vsecp, skipaclchk, cr);
+
+ if (zfsvfs->z_os->os_sync == ZFS_SYNC_ALWAYS)
+ zil_commit(zilog, UINT64_MAX, 0);
+
ZFS_EXIT(zfsvfs);
return (error);
}
/*
+ * Tunable, both must be a power of 2.
+ *
+ * zcr_blksz_min: the smallest read we may consider to loan out an arcbuf
+ * zcr_blksz_max: if set to less than the file block size, allow loaning out of
+ * an arcbuf for a partial block read
+ */
+int zcr_blksz_min = (1 << 10); /* 1K */
+int zcr_blksz_max = (1 << 17); /* 128K */
+
+/*ARGSUSED*/
+static int
+zfs_reqzcbuf(vnode_t *vp, enum uio_rw ioflag, xuio_t *xuio, cred_t *cr,
+ caller_context_t *ct)
+{
+ znode_t *zp = VTOZ(vp);
+ zfsvfs_t *zfsvfs = zp->z_zfsvfs;
+ int max_blksz = zfsvfs->z_max_blksz;
+ uio_t *uio = &xuio->xu_uio;
+ ssize_t size = uio->uio_resid;
+ offset_t offset = uio->uio_loffset;
+ int blksz;
+ int fullblk, i;
+ arc_buf_t *abuf;
+ ssize_t maxsize;
+ int preamble, postamble;
+
+ if (xuio->xu_type != UIOTYPE_ZEROCOPY)
+ return (EINVAL);
+
+ ZFS_ENTER(zfsvfs);
+ ZFS_VERIFY_ZP(zp);
+ switch (ioflag) {
+ case UIO_WRITE:
+ /*
+ * Loan out an arc_buf for write if write size is bigger than
+ * max_blksz, and the file's block size is also max_blksz.
+ */
+ blksz = max_blksz;
+ if (size < blksz || zp->z_blksz != blksz) {
+ ZFS_EXIT(zfsvfs);
+ return (EINVAL);
+ }
+ /*
+ * Caller requests buffers for write before knowing where the
+ * write offset might be (e.g. NFS TCP write).
+ */
+ if (offset == -1) {
+ preamble = 0;
+ } else {
+ preamble = P2PHASE(offset, blksz);
+ if (preamble) {
+ preamble = blksz - preamble;
+ size -= preamble;
+ }
+ }
+
+ postamble = P2PHASE(size, blksz);
+ size -= postamble;
+
+ fullblk = size / blksz;
+ (void) dmu_xuio_init(xuio,
+ (preamble != 0) + fullblk + (postamble != 0));
+ DTRACE_PROBE3(zfs_reqzcbuf_align, int, preamble,
+ int, postamble, int,
+ (preamble != 0) + fullblk + (postamble != 0));
+
+ /*
+ * Have to fix iov base/len for partial buffers. They
+ * currently represent full arc_buf's.
+ */
+ if (preamble) {
+ /* data begins in the middle of the arc_buf */
+ abuf = dmu_request_arcbuf(sa_get_db(zp->z_sa_hdl),
+ blksz);
+ ASSERT(abuf);
+ (void) dmu_xuio_add(xuio, abuf,
+ blksz - preamble, preamble);
+ }
+
+ for (i = 0; i < fullblk; i++) {
+ abuf = dmu_request_arcbuf(sa_get_db(zp->z_sa_hdl),
+ blksz);
+ ASSERT(abuf);
+ (void) dmu_xuio_add(xuio, abuf, 0, blksz);
+ }
+
+ if (postamble) {
+ /* data ends in the middle of the arc_buf */
+ abuf = dmu_request_arcbuf(sa_get_db(zp->z_sa_hdl),
+ blksz);
+ ASSERT(abuf);
+ (void) dmu_xuio_add(xuio, abuf, 0, postamble);
+ }
+ break;
+ case UIO_READ:
+ /*
+ * Loan out an arc_buf for read if the read size is larger than
+ * the current file block size. Block alignment is not
+ * considered. Partial arc_buf will be loaned out for read.
+ */
+ blksz = zp->z_blksz;
+ if (blksz < zcr_blksz_min)
+ blksz = zcr_blksz_min;
+ if (blksz > zcr_blksz_max)
+ blksz = zcr_blksz_max;
+ /* avoid potential complexity of dealing with it */
+ if (blksz > max_blksz) {
+ ZFS_EXIT(zfsvfs);
+ return (EINVAL);
+ }
+
+ maxsize = zp->z_size - uio->uio_loffset;
+ if (size > maxsize)
+ size = maxsize;
+
+ if (size < blksz || vn_has_cached_data(vp)) {
+ ZFS_EXIT(zfsvfs);
+ return (EINVAL);
+ }
+ break;
+ default:
+ ZFS_EXIT(zfsvfs);
+ return (EINVAL);
+ }
+
+ uio->uio_extflg = UIO_XUIO;
+ XUIO_XUZC_RW(xuio) = ioflag;
+ ZFS_EXIT(zfsvfs);
+ return (0);
+}
+
+/*ARGSUSED*/
+static int
+zfs_retzcbuf(vnode_t *vp, xuio_t *xuio, cred_t *cr, caller_context_t *ct)
+{
+ int i;
+ arc_buf_t *abuf;
+ int ioflag = XUIO_XUZC_RW(xuio);
+
+ ASSERT(xuio->xu_type == UIOTYPE_ZEROCOPY);
+
+ i = dmu_xuio_cnt(xuio);
+ while (i-- > 0) {
+ abuf = dmu_xuio_arcbuf(xuio, i);
+ /*
+ * if abuf == NULL, it must be a write buffer
+ * that has been returned in zfs_write().
+ */
+ if (abuf)
+ dmu_return_arcbuf(abuf);
+ ASSERT(abuf || ioflag == UIO_WRITE);
+ }
+
+ dmu_xuio_fini(xuio);
+ return (0);
+}
+
+/*
* Predeclare these here so that the compiler assumes that
* this is an "old style" function declaration that does
* not include arguments => we won't get type mismatch errors
VOPNAME_GETSECATTR, { .vop_getsecattr = zfs_getsecattr },
VOPNAME_SETSECATTR, { .vop_setsecattr = zfs_setsecattr },
VOPNAME_VNEVENT, { .vop_vnevent = fs_vnevent_support },
+ VOPNAME_REQZCBUF, { .vop_reqzcbuf = zfs_reqzcbuf },
+ VOPNAME_RETZCBUF, { .vop_retzcbuf = zfs_retzcbuf },
NULL, NULL
};
git://git.camperquake.de / zfs.git / blobdiff