static int
zfs_replay_rename(zfsvfs_t *zfsvfs, lr_rename_t *lr, boolean_t byteswap)
{
char *sname = (char *)(lr + 1); /* sname and tname follow lr_rename_t */
char *tname = sname + strlen(sname) + 1;
znode_t *sdzp, *tdzp;
int error;
int vflg = 0;
if (byteswap)
byteswap_uint64_array(lr, sizeof (*lr));
if ((error = zfs_zget(zfsvfs, lr->lr_sdoid, &sdzp)) != 0)
return (error);
if ((error = zfs_zget(zfsvfs, lr->lr_tdoid, &tdzp)) != 0) {
iput(ZTOI(sdzp));
return (error);
}
if (lr->lr_common.lrc_txtype & TX_CI)
vflg |= FIGNORECASE;
error = zfs_rename(ZTOI(sdzp), sname, ZTOI(tdzp), tname, kcred, vflg);
iput(ZTOI(tdzp));
iput(ZTOI(sdzp));
return (error);
}
static int
zfs_replay_rename(void *arg1, char *arg2, boolean_t byteswap)
{
zfsvfs_t *zfsvfs = (zfsvfs_t *)arg1;
lr_rename_t *lr = (lr_rename_t *)arg2;
char *sname = (char *)(lr + 1); /* sname and tname follow lr_rename_t */
char *tname = sname + strlen(sname) + 1;
znode_t *sdzp, *tdzp;
int error;
int vflg = 0;
if (byteswap)
byteswap_uint64_array(lr, sizeof (*lr));
if ((error = zfs_zget(zfsvfs, lr->lr_sdoid, &sdzp)) != 0)
return (error);
if ((error = zfs_zget(zfsvfs, lr->lr_tdoid, &tdzp)) != 0) {
VN_RELE(ZTOV(sdzp));
return (error);
}
if (lr->lr_common.lrc_txtype & TX_CI)
vflg |= FIGNORECASE;
error = VOP_RENAME(ZTOV(sdzp), sname, ZTOV(tdzp), tname, kcred,
NULL, vflg);
VN_RELE(ZTOV(tdzp));
VN_RELE(ZTOV(sdzp));
return (error);
}
static int
zfs_replay_link(zfsvfs_t *zfsvfs, lr_link_t *lr, boolean_t byteswap)
{
char *name = (char *)(lr + 1); /* name follows lr_link_t */
znode_t *dzp, *zp;
int error;
int vflg = 0;
if (byteswap)
byteswap_uint64_array(lr, sizeof (*lr));
if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
return (error);
if ((error = zfs_zget(zfsvfs, lr->lr_link_obj, &zp)) != 0) {
iput(ZTOI(dzp));
return (error);
}
if (lr->lr_common.lrc_txtype & TX_CI)
vflg |= FIGNORECASE;
error = zfs_link(ZTOI(dzp), ZTOI(zp), name, kcred, vflg);
iput(ZTOI(zp));
iput(ZTOI(dzp));
return (error);
}
static int
zfs_replay_link(void *arg1, char *arg2, boolean_t byteswap)
{
zfsvfs_t *zfsvfs = (zfsvfs_t *)arg1;
lr_link_t *lr = (lr_link_t *)arg2;
char *name = (char *)(lr + 1); /* name follows lr_link_t */
znode_t *dzp, *zp;
int error;
int vflg = 0;
if (byteswap)
byteswap_uint64_array(lr, sizeof (*lr));
if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
return (error);
if ((error = zfs_zget(zfsvfs, lr->lr_link_obj, &zp)) != 0) {
VN_RELE(ZTOV(dzp));
return (error);
}
if (lr->lr_common.lrc_txtype & TX_CI)
vflg |= FIGNORECASE;
error = VOP_LINK(ZTOV(dzp), ZTOV(zp), name, kcred, NULL, vflg);
VN_RELE(ZTOV(zp));
VN_RELE(ZTOV(dzp));
return (error);
}
static int zfsfuse_rename(fuse_req_t req, fuse_ino_t parent, const char *name, fuse_ino_t newparent, const char *newname)
{
if(strlen(name) >= MAXNAMELEN)
return ENAMETOOLONG;
if(strlen(newname) >= MAXNAMELEN)
return ENAMETOOLONG;
vfs_t *vfs = (vfs_t *) fuse_req_userdata(req);
zfsvfs_t *zfsvfs = vfs->vfs_data;
ZFS_ENTER(zfsvfs);
znode_t *p_znode, *np_znode;
int error = zfs_zget(zfsvfs, parent, &p_znode, B_FALSE);
if(error) {
ZFS_EXIT(zfsvfs);
/* If the inode we are trying to get was recently deleted
dnode_hold_impl will return EEXIST instead of ENOENT */
return error == EEXIST ? ENOENT : error;
}
ASSERT(p_znode != NULL);
error = zfs_zget(zfsvfs, newparent, &np_znode, B_FALSE);
if(error) {
VN_RELE(ZTOV(p_znode));
ZFS_EXIT(zfsvfs);
/* If the inode we are trying to get was recently deleted
dnode_hold_impl will return EEXIST instead of ENOENT */
return error == EEXIST ? ENOENT : error;
}
ASSERT(np_znode != NULL);
vnode_t *p_vp = ZTOV(p_znode);
vnode_t *np_vp = ZTOV(np_znode);
ASSERT(p_vp != NULL);
ASSERT(np_vp != NULL);
cred_t cred;
zfsfuse_getcred(req, &cred);
error = VOP_RENAME(p_vp, (char *) name, np_vp, (char *) newname, &cred, NULL, 0);
VN_RELE(p_vp);
VN_RELE(np_vp);
ZFS_EXIT(zfsvfs);
return error;
}
static int
zfs_replay_truncate(zfsvfs_t *zfsvfs, lr_truncate_t *lr, boolean_t byteswap)
{
znode_t *zp;
flock64_t fl;
int error;
if (byteswap)
byteswap_uint64_array(lr, sizeof (*lr));
if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
return (error);
bzero(&fl, sizeof (fl));
fl.l_type = F_WRLCK;
fl.l_whence = 0;
fl.l_start = lr->lr_offset;
fl.l_len = lr->lr_length;
error = zfs_space(ZTOI(zp), F_FREESP, &fl, FWRITE | FOFFMAX,
lr->lr_offset, kcred);
iput(ZTOI(zp));
return (error);
}
static int
zfs_replay_remove(zfsvfs_t *zfsvfs, lr_remove_t *lr, boolean_t byteswap)
{
char *name = (char *)(lr + 1); /* name follows lr_remove_t */
znode_t *dzp;
int error;
int vflg = 0;
if (byteswap)
byteswap_uint64_array(lr, sizeof (*lr));
if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
return (error);
if (lr->lr_common.lrc_txtype & TX_CI)
vflg |= FIGNORECASE;
switch ((int)lr->lr_common.lrc_txtype) {
case TX_REMOVE:
error = zfs_remove(ZTOI(dzp), name, kcred, vflg);
break;
case TX_RMDIR:
error = zfs_rmdir(ZTOI(dzp), name, NULL, kcred, vflg);
break;
default:
error = SET_ERROR(ENOTSUP);
}
iput(ZTOI(dzp));
return (error);
}
/*
* Clean up any znodes that had no links when we either crashed or
* (force) umounted the file system.
*/
void
zfs_unlinked_drain(zfs_sb_t *zsb)
{
zap_cursor_t zc;
zap_attribute_t zap;
dmu_object_info_t doi;
znode_t *zp;
int error;
/*
* Interate over the contents of the unlinked set.
*/
for (zap_cursor_init(&zc, zsb->z_os, zsb->z_unlinkedobj);
zap_cursor_retrieve(&zc, &zap) == 0;
zap_cursor_advance(&zc)) {
/*
* See what kind of object we have in list
*/
error = dmu_object_info(zsb->z_os, zap.za_first_integer, &doi);
if (error != 0)
continue;
ASSERT((doi.doi_type == DMU_OT_PLAIN_FILE_CONTENTS) ||
(doi.doi_type == DMU_OT_DIRECTORY_CONTENTS));
/*
* We need to re-mark these list entries for deletion,
* so we pull them back into core and set zp->z_unlinked.
*/
error = zfs_zget(zsb, zap.za_first_integer, &zp);
/*
* We may pick up znodes that are already marked for deletion.
* This could happen during the purge of an extended attribute
* directory. All we need to do is skip over them, since they
* are already in the system marked z_unlinked.
*/
if (error != 0)
continue;
zp->z_unlinked = B_TRUE;
/*
* If this is an attribute directory, purge its contents.
*/
if (S_ISDIR(ZTOI(zp)->i_mode) && (zp->z_pflags & ZFS_XATTR)) {
/*
* We don't need to check the return value of
* zfs_purgedir here, because zfs_rmnode will just
* return this xattr directory to the unlinked set
* until all of its xattrs are gone.
*/
(void) zfs_purgedir(zp);
}
iput(ZTOI(zp));
}
zap_cursor_fini(&zc);
}
/*
* Look up an entry in a directory.
*
* NOTE: '.' and '..' are handled as special cases because
* no directory entries are actually stored for them. If this is
* the root of a filesystem, then '.zfs' is also treated as a
* special pseudo-directory.
*/
int
zfs_dirlook(znode_t *dzp, char *name, struct inode **ipp, int flags,
int *deflg, pathname_t *rpnp)
{
zfs_dirlock_t *dl;
znode_t *zp;
int error = 0;
uint64_t parent;
if (name[0] == 0 || (name[0] == '.' && name[1] == 0)) {
*ipp = ZTOI(dzp);
igrab(*ipp);
} else if (name[0] == '.' && name[1] == '.' && name[2] == 0) {
zfs_sb_t *zsb = ZTOZSB(dzp);
/*
* If we are a snapshot mounted under .zfs, return
* the vp for the snapshot directory.
*/
if ((error = sa_lookup(dzp->z_sa_hdl,
SA_ZPL_PARENT(zsb), &parent, sizeof (parent))) != 0)
return (error);
#ifdef HAVE_SNAPSHOT
if (parent == dzp->z_id && zsb->z_parent != zsb) {
error = zfsctl_root_lookup(zsb->z_parent->z_ctldir,
"snapshot", ipp, NULL, 0, NULL, kcred,
NULL, NULL, NULL);
return (error);
}
#endif /* HAVE_SNAPSHOT */
rw_enter(&dzp->z_parent_lock, RW_READER);
error = zfs_zget(zsb, parent, &zp);
if (error == 0)
*ipp = ZTOI(zp);
rw_exit(&dzp->z_parent_lock);
#ifdef HAVE_SNAPSHOT
} else if (zfs_has_ctldir(dzp) && strcmp(name, ZFS_CTLDIR_NAME) == 0) {
*ipp = zfsctl_root(dzp);
#endif /* HAVE_SNAPSHOT */
} else {
int zf;
zf = ZEXISTS | ZSHARED;
if (flags & FIGNORECASE)
zf |= ZCILOOK;
error = zfs_dirent_lock(&dl, dzp, name, &zp, zf, deflg, rpnp);
if (error == 0) {
*ipp = ZTOI(zp);
zfs_dirent_unlock(dl);
dzp->z_zn_prefetch = B_TRUE; /* enable prefetching */
}
rpnp = NULL;
}
if ((flags & FIGNORECASE) && rpnp && !error)
(void) strlcpy(rpnp->pn_buf, name, rpnp->pn_bufsize);
return (error);
}
static int zfsfuse_getattr(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi)
{
vfs_t *vfs = (vfs_t *) fuse_req_userdata(req);
zfsvfs_t *zfsvfs = vfs->vfs_data;
ZFS_ENTER(zfsvfs);
znode_t *znode;
int error = zfs_zget(zfsvfs, ino, &znode, B_TRUE);
if(error) {
ZFS_EXIT(zfsvfs);
/* If the inode we are trying to get was recently deleted
dnode_hold_impl will return EEXIST instead of ENOENT */
return error == EEXIST ? ENOENT : error;
}
ASSERT(znode != NULL);
vnode_t *vp = ZTOV(znode);
ASSERT(vp != NULL);
cred_t cred;
zfsfuse_getcred(req, &cred);
struct stat stbuf;
error = zfsfuse_stat(vp, &stbuf, &cred);
VN_RELE(vp);
ZFS_EXIT(zfsvfs);
if(!error)
fuse_reply_attr(req, &stbuf, 0.0);
return error;
}
void
zfs_rmnode(znode_t *zp)
{
zfsvfs_t *zfsvfs = zp->z_zfsvfs;
objset_t *os = zfsvfs->z_os;
znode_t *xzp = NULL;
dmu_tx_t *tx;
uint64_t acl_obj;
uint64_t xattr_obj;
int error;
ASSERT(zp->z_links == 0);
ASSERT_VOP_ELOCKED(ZTOV(zp), __func__);
/*
* If this is an attribute directory, purge its contents.
*/
if (ZTOV(zp) != NULL && ZTOV(zp)->v_type == VDIR &&
(zp->z_pflags & ZFS_XATTR)) {
if (zfs_purgedir(zp) != 0) {
/*
* Not enough space to delete some xattrs.
* Leave it in the unlinked set.
*/
zfs_znode_dmu_fini(zp);
zfs_znode_free(zp);
return;
}
} else {
/*
* Free up all the data in the file. We don't do this for
* XATTR directories because we need truncate and remove to be
* in the same tx, like in zfs_znode_delete(). Otherwise, if
* we crash here we'll end up with an inconsistent truncated
* zap object in the delete queue. Note a truncated file is
* harmless since it only contains user data.
*/
error = dmu_free_long_range(os, zp->z_id, 0, DMU_OBJECT_END);
if (error) {
/*
* Not enough space. Leave the file in the unlinked
* set.
*/
zfs_znode_dmu_fini(zp);
zfs_znode_free(zp);
return;
}
}
/*
* If the file has extended attributes, we're going to unlink
* the xattr dir.
*/
error = sa_lookup(zp->z_sa_hdl, SA_ZPL_XATTR(zfsvfs),
&xattr_obj, sizeof (xattr_obj));
if (error == 0 && xattr_obj) {
error = zfs_zget(zfsvfs, xattr_obj, &xzp);
ASSERT3S(error, ==, 0);
vn_lock(ZTOV(xzp), LK_EXCLUSIVE | LK_RETRY);
}
static int
zfs_replay_write(zfsvfs_t *zsb, lr_write_t *lr, boolean_t byteswap)
{
char *data = (char *)(lr + 1); /* data follows lr_write_t */
znode_t *zp;
int error;
uint64_t eod, offset, length;
ssize_t resid;
if (byteswap)
byteswap_uint64_array(lr, sizeof (*lr));
if ((error = zfs_zget(zsb, lr->lr_foid, &zp)) != 0) {
/*
* As we can log writes out of order, it's possible the
* file has been removed. In this case just drop the write
* and return success.
*/
if (error == ENOENT)
error = 0;
return (error);
}
zfs_znode_wait_vnode(zp);
offset = lr->lr_offset;
length = lr->lr_length;
eod = offset + length; /* end of data for this write */
/*
* This may be a write from a dmu_sync() for a whole block,
* and may extend beyond the current end of the file.
* We can't just replay what was written for this TX_WRITE as
* a future TX_WRITE2 may extend the eof and the data for that
* write needs to be there. So we write the whole block and
* reduce the eof. This needs to be done within the single dmu
* transaction created within vn_rdwr -> zfs_write. So a possible
* new end of file is passed through in zsb->z_replay_eof
*/
zsb->z_replay_eof = 0; /* 0 means don't change end of file */
/* If it's a dmu_sync() block, write the whole block */
if (lr->lr_common.lrc_reclen == sizeof (lr_write_t)) {
uint64_t blocksize = BP_GET_LSIZE(&lr->lr_blkptr);
if (length < blocksize) {
offset -= offset % blocksize;
length = blocksize;
}
if (zp->z_size < eod)
zsb->z_replay_eof = eod;
}
error = vn_rdwr(UIO_WRITE, ZTOV(zp), data, length, offset,
UIO_SYSSPACE, 0, RLIM64_INFINITY, kcred, &resid);
VN_RELE(ZTOV(zp));
zsb->z_replay_eof = 0; /* safety */
return (error);
}
static int
zfs_replay_acl_v0(zfsvfs_t *zfsvfs, lr_acl_v0_t *lr, boolean_t byteswap)
{
ace_t *ace = (ace_t *)(lr + 1); /* ace array follows lr_acl_t */
vsecattr_t vsa;
znode_t *zp;
int error;
if (byteswap) {
byteswap_uint64_array(lr, sizeof (*lr));
zfs_oldace_byteswap(ace, lr->lr_aclcnt);
}
if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) {
/*
* As we can log acls out of order, it's possible the
* file has been removed. In this case just drop the acl
* and return success.
*/
if (error == ENOENT)
error = 0;
return (error);
}
bzero(&vsa, sizeof (vsa));
vsa.vsa_mask = VSA_ACE | VSA_ACECNT;
vsa.vsa_aclcnt = lr->lr_aclcnt;
vsa.vsa_aclentp = ace;
error = VOP_SETSECATTR(ZTOV(zp), &vsa, 0, kcred, NULL);
VN_RELE(ZTOV(zp));
return (error);
}
static int
zfs_replay_truncate(zfsvfs_t *zfsvfs, lr_truncate_t *lr, boolean_t byteswap)
{
znode_t *zp;
flock64_t fl;
int error;
if (byteswap)
byteswap_uint64_array(lr, sizeof (*lr));
if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) {
/*
* As we can log truncates out of order, it's possible the
* file has been removed. In this case just drop the truncate
* and return success.
*/
if (error == ENOENT)
error = 0;
return (error);
}
bzero(&fl, sizeof (fl));
fl.l_type = F_WRLCK;
fl.l_whence = 0;
fl.l_start = lr->lr_offset;
fl.l_len = lr->lr_length;
error = VOP_SPACE(ZTOV(zp), F_FREESP, &fl, FWRITE | FOFFMAX,
lr->lr_offset, kcred, NULL);
VN_RELE(ZTOV(zp));
return (error);
}
static int zfsfuse_lookup(fuse_req_t req, fuse_ino_t parent, const char *name)
{
if(strlen(name) >= MAXNAMELEN)
return ENAMETOOLONG;
vfs_t *vfs = (vfs_t *) fuse_req_userdata(req);
zfsvfs_t *zfsvfs = vfs->vfs_data;
ZFS_ENTER(zfsvfs);
znode_t *znode;
int error = zfs_zget(zfsvfs, parent, &znode, B_TRUE);
if(error) {
ZFS_EXIT(zfsvfs);
/* If the inode we are trying to get was recently deleted
dnode_hold_impl will return EEXIST instead of ENOENT */
return error == EEXIST ? ENOENT : error;
}
ASSERT(znode != NULL);
vnode_t *dvp = ZTOV(znode);
ASSERT(dvp != NULL);
vnode_t *vp = NULL;
cred_t cred;
zfsfuse_getcred(req, &cred);
error = VOP_LOOKUP(dvp, (char *) name, &vp, NULL, 0, NULL, &cred, NULL, NULL, NULL);
if(error)
goto out;
struct fuse_entry_param e = { 0 };
e.attr_timeout = 0.0;
e.entry_timeout = 0.0;
if(vp == NULL)
goto out;
e.ino = VTOZ(vp)->z_id;
if(e.ino == 3)
e.ino = 1;
e.generation = VTOZ(vp)->z_phys->zp_gen;
error = zfsfuse_stat(vp, &e.attr, &cred);
out:
if(vp != NULL)
VN_RELE(vp);
VN_RELE(dvp);
ZFS_EXIT(zfsvfs);
if(!error)
fuse_reply_entry(req, &e);
return error;
}
static int
zfs_replay_remove(void *arg1, char *arg2, boolean_t byteswap)
{
zfsvfs_t *zfsvfs = (zfsvfs_t *)arg1;
lr_remove_t *lr = (lr_remove_t *)arg2;
char *name = (char *)(lr + 1); /* name follows lr_remove_t */
znode_t *dzp;
int error;
int vflg = 0;
if (byteswap)
byteswap_uint64_array(lr, sizeof (*lr));
if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
return (error);
if (lr->lr_common.lrc_txtype & TX_CI)
vflg |= FIGNORECASE;
switch ((int)lr->lr_common.lrc_txtype) {
case TX_REMOVE:
error = VOP_REMOVE(ZTOV(dzp), name, kcred, NULL, vflg);
break;
case TX_RMDIR:
error = VOP_RMDIR(ZTOV(dzp), name, NULL, kcred, NULL, vflg);
break;
default:
error = ENOTSUP;
}
VN_RELE(ZTOV(dzp));
return (error);
}
static int
zfs_replay_acl_v0(zfsvfs_t *zfsvfs, lr_acl_v0_t *lr, boolean_t byteswap)
{
ace_t *ace = (ace_t *)(lr + 1); /* ace array follows lr_acl_t */
vsecattr_t vsa;
znode_t *zp;
int error;
if (byteswap) {
byteswap_uint64_array(lr, sizeof (*lr));
zfs_oldace_byteswap(ace, lr->lr_aclcnt);
}
if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
return (error);
bzero(&vsa, sizeof (vsa));
vsa.vsa_mask = VSA_ACE | VSA_ACECNT;
vsa.vsa_aclcnt = lr->lr_aclcnt;
vsa.vsa_aclentsz = sizeof (ace_t) * vsa.vsa_aclcnt;
vsa.vsa_aclflags = 0;
vsa.vsa_aclentp = ace;
error = zfs_setsecattr(ZTOI(zp), &vsa, 0, kcred);
iput(ZTOI(zp));
return (error);
}
static int
zfs_replay_acl_v0(zfsvfs_t *zfsvfs, lr_acl_v0_t *lr, boolean_t byteswap)
{
ace_t *ace = (ace_t *)(lr + 1); /* ace array follows lr_acl_t */
vsecattr_t vsa;
znode_t *zp;
int error;
if (byteswap) {
byteswap_uint64_array(lr, sizeof (*lr));
zfs_oldace_byteswap(ace, lr->lr_aclcnt);
}
if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
return (error);
bzero(&vsa, sizeof (vsa));
vsa.vsa_mask = VSA_ACE | VSA_ACECNT;
vsa.vsa_aclcnt = lr->lr_aclcnt;
vsa.vsa_aclentsz = sizeof (ace_t) * vsa.vsa_aclcnt;
vsa.vsa_aclflags = 0;
vsa.vsa_aclentp = ace;
#ifdef TODO
error = VOP_SETSECATTR(ZTOV(zp), &vsa, 0, kcred, NULL);
#else
panic("%s:%u: unsupported condition", __func__, __LINE__);
#endif
VN_RELE(ZTOV(zp));
return (error);
}
static int
zfs_replay_write(zfsvfs_t *zfsvfs, lr_write_t *lr, boolean_t byteswap)
{
char *data = (char *)(lr + 1); /* data follows lr_write_t */
znode_t *zp;
int error;
ssize_t resid;
if (byteswap)
byteswap_uint64_array(lr, sizeof (*lr));
if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) {
/*
* As we can log writes out of order, it's possible the
* file has been removed. In this case just drop the write
* and return success.
*/
if (error == ENOENT)
error = 0;
return (error);
}
error = vn_rdwr(UIO_WRITE, ZTOV(zp), data, lr->lr_length,
lr->lr_offset, UIO_SYSSPACE, 0, RLIM64_INFINITY, kcred, &resid);
VN_RELE(ZTOV(zp));
return (error);
}
/* ARGSUSED */
int
zfsctl_shares_lookup(struct inode *dip, char *name, struct inode **ipp,
int flags, cred_t *cr, int *direntflags, pathname_t *realpnp)
{
zfs_sb_t *zsb = ITOZSB(dip);
struct inode *ip;
znode_t *dzp;
int error;
ZFS_ENTER(zsb);
if (zsb->z_shares_dir == 0) {
ZFS_EXIT(zsb);
return (ENOTSUP);
}
error = zfs_zget(zsb, zsb->z_shares_dir, &dzp);
if (error) {
ZFS_EXIT(zsb);
return (error);
}
error = zfs_lookup(ZTOI(dzp), name, &ip, 0, cr, NULL, NULL);
iput(ZTOI(dzp));
ZFS_EXIT(zsb);
return (error);
}
static int
zfs_replay_truncate(zfsvfs_t *zfsvfs, lr_truncate_t *lr, boolean_t byteswap)
{
#ifdef sun
znode_t *zp;
flock64_t fl;
int error;
if (byteswap)
byteswap_uint64_array(lr, sizeof (*lr));
if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
return (error);
bzero(&fl, sizeof (fl));
fl.l_type = F_WRLCK;
fl.l_whence = 0;
fl.l_start = lr->lr_offset;
fl.l_len = lr->lr_length;
error = VOP_SPACE(ZTOV(zp), F_FREESP, &fl, FWRITE | FOFFMAX,
lr->lr_offset, kcred, NULL);
VN_RELE(ZTOV(zp));
return (error);
#else /* !sun */
ZFS_LOG(0, "Unexpected code path, report to [email protected]");
return (EOPNOTSUPP);
#endif /* !sun */
}
static int
zfs_replay_acl_v0(void *arg1, void *arg2, boolean_t byteswap)
{
zfsvfs_t *zfsvfs = arg1;
lr_acl_v0_t *lr = arg2;
ace_t *ace = (ace_t *)(lr + 1); /* ace array follows lr_acl_t */
vsecattr_t vsa;
vnode_t *vp;
znode_t *zp;
int error;
if (byteswap) {
byteswap_uint64_array(lr, sizeof (*lr));
zfs_oldace_byteswap(ace, lr->lr_aclcnt);
}
if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
return (error);
bzero(&vsa, sizeof (vsa));
vsa.vsa_mask = VSA_ACE | VSA_ACECNT;
vsa.vsa_aclcnt = lr->lr_aclcnt;
vsa.vsa_aclentsz = sizeof (ace_t) * vsa.vsa_aclcnt;
vsa.vsa_aclflags = 0;
vsa.vsa_aclentp = ace;
vp = ZTOV(zp);
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
error = zfs_setsecattr(vp, &vsa, 0, kcred, NULL);
VOP_UNLOCK(vp, 0);
VN_RELE(vp);
return (error);
}
static int
zpl_shares_iterate(struct file *filp, struct dir_context *ctx)
{
fstrans_cookie_t cookie;
cred_t *cr = CRED();
zfs_sb_t *zsb = ITOZSB(filp->f_path.dentry->d_inode);
znode_t *dzp;
int error = 0;
ZFS_ENTER(zsb);
cookie = spl_fstrans_mark();
if (zsb->z_shares_dir == 0) {
dir_emit_dots(filp, ctx);
goto out;
}
error = -zfs_zget(zsb, zsb->z_shares_dir, &dzp);
if (error)
goto out;
crhold(cr);
error = -zfs_readdir(ZTOI(dzp), ctx, cr);
crfree(cr);
VN_RELE(ZTOV(dzp));
out:
spl_fstrans_unmark(cookie);
ZFS_EXIT(zsb);
ASSERT3S(error, <=, 0);
return (error);
}
/* ARGSUSED */
static int
zpl_shares_getattr(struct vfsmount *mnt, struct dentry *dentry,
struct kstat *stat)
{
struct inode *ip = dentry->d_inode;
zfs_sb_t *zsb = ITOZSB(ip);
znode_t *dzp;
int error;
ZFS_ENTER(zsb);
if (zsb->z_shares_dir == 0) {
error = simple_getattr(mnt, dentry, stat);
stat->nlink = stat->size = 2;
stat->atime = CURRENT_TIME;
ZFS_EXIT(zsb);
return (error);
}
error = -zfs_zget(zsb, zsb->z_shares_dir, &dzp);
if (error == 0) {
error = -zfs_getattr_fast(ZTOI(dzp), stat);
iput(ZTOI(dzp));
}
//VN_RELE(ZTOI(dzp));
ZFS_EXIT(zsb);
ASSERT3S(error, <=, 0);
return (error);
}
/* ARGSUSED */
static int
zfsctl_shares_readdir(vnode_t *vp, uio_t *uiop, cred_t *cr, int *eofp,
caller_context_t *ct, int flags)
{
zfsvfs_t *zfsvfs = vp->v_vfsp->vfs_data;
znode_t *dzp;
int error;
ZFS_ENTER(zfsvfs);
if (zfsvfs->z_shares_dir == 0) {
ZFS_EXIT(zfsvfs);
return (ENOTSUP);
}
if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &dzp)) == 0) {
error = VOP_READDIR(ZTOV(dzp), uiop, cr, eofp, ct, flags);
VN_RELE(ZTOV(dzp));
} else {
*eofp = 1;
error = ENOENT;
}
ZFS_EXIT(zfsvfs);
return (error);
}
/* ARGSUSED */
static int
zfsctl_shares_lookup(vnode_t *dvp, char *nm, vnode_t **vpp, pathname_t *pnp,
int flags, vnode_t *rdir, cred_t *cr, caller_context_t *ct,
int *direntflags, pathname_t *realpnp)
{
zfsvfs_t *zfsvfs = dvp->v_vfsp->vfs_data;
znode_t *dzp;
int error;
ZFS_ENTER(zfsvfs);
if (gfs_lookup_dot(vpp, dvp, zfsvfs->z_ctldir, nm) == 0) {
ZFS_EXIT(zfsvfs);
return (0);
}
if (zfsvfs->z_shares_dir == 0) {
ZFS_EXIT(zfsvfs);
return (ENOTSUP);
}
if ((error = zfs_zget(zfsvfs, zfsvfs->z_shares_dir, &dzp)) == 0)
error = VOP_LOOKUP(ZTOV(dzp), nm, vpp, pnp,
flags, rdir, cr, ct, direntflags, realpnp);
VN_RELE(ZTOV(dzp));
ZFS_EXIT(zfsvfs);
return (error);
}
static int
zfs_replay_truncate(void *arg1, char *arg2, boolean_t byteswap)
{
zfsvfs_t *zfsvfs = (zfsvfs_t *)arg1;
lr_truncate_t *lr = (lr_truncate_t *)arg2;
znode_t *zp;
flock64_t fl;
int error;
if (byteswap)
byteswap_uint64_array(lr, sizeof (*lr));
if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0)
return (error);
bzero(&fl, sizeof (fl));
fl.l_type = F_WRLCK;
fl.l_whence = 0;
fl.l_start = lr->lr_offset;
fl.l_len = lr->lr_length;
error = VOP_SPACE(ZTOV(zp), F_FREESP, &fl, FWRITE | FOFFMAX,
lr->lr_offset, kcred, NULL);
VN_RELE(ZTOV(zp));
return (error);
}
/*
* Delete the entire contents of a directory. Return a count
* of the number of entries that could not be deleted. If we encounter
* an error, return a count of at least one so that the directory stays
* in the unlinked set.
*
* NOTE: this function assumes that the directory is inactive,
* so there is no need to lock its entries before deletion.
* Also, it assumes the directory contents is *only* regular
* files.
*/
static int
zfs_purgedir(znode_t *dzp)
{
zap_cursor_t zc;
zap_attribute_t zap;
znode_t *xzp;
dmu_tx_t *tx;
zfsvfs_t *zfsvfs = dzp->z_zfsvfs;
zfs_dirlock_t dl;
int skipped = 0;
int error;
for (zap_cursor_init(&zc, zfsvfs->z_os, dzp->z_id);
(error = zap_cursor_retrieve(&zc, &zap)) == 0;
zap_cursor_advance(&zc)) {
error = zfs_zget(zfsvfs,
ZFS_DIRENT_OBJ(zap.za_first_integer), &xzp);
if (error) {
skipped += 1;
continue;
}
/*
ASSERT((ZTOV(xzp)->v_type == VREG) ||
(ZTOV(xzp)->v_type == VLNK));
*/
tx = dmu_tx_create(zfsvfs->z_os);
dmu_tx_hold_sa(tx, dzp->z_sa_hdl, B_FALSE);
dmu_tx_hold_zap(tx, dzp->z_id, FALSE, zap.za_name);
dmu_tx_hold_sa(tx, xzp->z_sa_hdl, B_FALSE);
dmu_tx_hold_zap(tx, zfsvfs->z_unlinkedobj, FALSE, NULL);
/* Is this really needed ? */
zfs_sa_upgrade_txholds(tx, xzp);
error = dmu_tx_assign(tx, TXG_WAIT);
if (error) {
dmu_tx_abort(tx);
//VN_RELE(ZTOV(xzp)); // async
VN_RELE_ASYNC(ZTOV(xzp), dsl_pool_vnrele_taskq(dmu_objset_pool(zfsvfs->z_os)));
skipped += 1;
continue;
}
bzero(&dl, sizeof (dl));
dl.dl_dzp = dzp;
dl.dl_name = zap.za_name;
error = zfs_link_destroy(&dl, xzp, tx, 0, NULL);
if (error)
skipped += 1;
dmu_tx_commit(tx);
//VN_RELE(ZTOV(xzp)); // async
VN_RELE_ASYNC(ZTOV(xzp), dsl_pool_vnrele_taskq(dmu_objset_pool(zfsvfs->z_os)));
}
zap_cursor_fini(&zc);
if (error != ENOENT)
skipped += 1;
return (skipped);
}
static int
zfs_replay_setattr(zfsvfs_t *zfsvfs, lr_setattr_t *lr, boolean_t byteswap)
{
znode_t *zp;
xvattr_t xva;
vattr_t *vap = &xva.xva_vattr;
int error;
void *start;
xva_init(&xva);
if (byteswap) {
byteswap_uint64_array(lr, sizeof (*lr));
if ((lr->lr_mask & AT_XVATTR) &&
zfsvfs->z_version >= ZPL_VERSION_INITIAL)
zfs_replay_swap_attrs((lr_attr_t *)(lr + 1));
}
if ((error = zfs_zget(zfsvfs, lr->lr_foid, &zp)) != 0) {
/*
* As we can log setattrs out of order, it's possible the
* file has been removed. In this case just drop the setattr
* and return success.
*/
if (error == ENOENT)
error = 0;
return (error);
}
zfs_init_vattr(vap, lr->lr_mask, lr->lr_mode,
lr->lr_uid, lr->lr_gid, 0, lr->lr_foid);
vap->va_size = lr->lr_size;
ZFS_TIME_DECODE(&vap->va_atime, lr->lr_atime);
ZFS_TIME_DECODE(&vap->va_mtime, lr->lr_mtime);
/*
* Fill in xvattr_t portions if necessary.
*/
start = (lr_setattr_t *)(lr + 1);
if (vap->va_mask & AT_XVATTR) {
zfs_replay_xvattr((lr_attr_t *)start, &xva);
start = (caddr_t)start +
ZIL_XVAT_SIZE(((lr_attr_t *)start)->lr_attr_masksize);
} else
xva.xva_vattr.va_mask &= ~AT_XVATTR;
zfsvfs->z_fuid_replay = zfs_replay_fuid_domain(start, &start,
lr->lr_uid, lr->lr_gid);
error = VOP_SETATTR(ZTOV(zp), vap, 0, kcred, NULL);
zfs_fuid_info_free(zfsvfs->z_fuid_replay);
zfsvfs->z_fuid_replay = NULL;
VN_RELE(ZTOV(zp));
return (error);
}
static int
zfs_replay_link(zfsvfs_t *zfsvfs, void *data, boolean_t byteswap)
{
#ifdef __OSV__
kprintf("TX_LINK not supported on OSv\n");
return EOPNOTSUPP;
#else
lr_link_t *lr;
char *name = (char *)(lr + 1); /* name follows lr_link_t */
znode_t *dzp, *zp;
struct componentname cn;
int error;
int vflg = 0;
if (byteswap)
byteswap_uint64_array(lr, sizeof (*lr));
if ((error = zfs_zget(zfsvfs, lr->lr_doid, &dzp)) != 0)
return (error);
if ((error = zfs_zget(zfsvfs, lr->lr_link_obj, &zp)) != 0) {
VN_RELE(ZTOV(dzp));
return (error);
}
if (lr->lr_common.lrc_txtype & TX_CI)
vflg |= FIGNORECASE;
cn.cn_nameptr = name;
cn.cn_cred = kcred;
cn.cn_thread = curthread;
cn.cn_flags = SAVENAME;
vn_lock(ZTOV(dzp), LK_EXCLUSIVE | LK_RETRY);
vn_lock(ZTOV(zp), LK_EXCLUSIVE | LK_RETRY);
error = VOP_LINK(ZTOV(dzp), ZTOV(zp), &cn /*,vflg*/);
VOP_UNLOCK(ZTOV(zp), 0);
VOP_UNLOCK(ZTOV(dzp), 0);
VN_RELE(ZTOV(zp));
VN_RELE(ZTOV(dzp));
return (error);
#endif
}
