static int
zpl_symlink(struct inode *dir, struct dentry *dentry, const char *name)
{
cred_t *cr = CRED();
vattr_t *vap;
struct inode *ip;
int error;
fstrans_cookie_t cookie;
crhold(cr);
vap = kmem_zalloc(sizeof (vattr_t), KM_SLEEP);
zpl_vap_init(vap, dir, S_IFLNK | S_IRWXUGO, cr);
cookie = spl_fstrans_mark();
error = -zfs_symlink(dir, dname(dentry), vap, (char *)name, &ip, cr, 0);
if (error == 0) {
d_instantiate(dentry, ip);
error = zpl_xattr_security_init(ip, dir, &dentry->d_name);
if (error)
(void) zfs_remove(dir, dname(dentry), cr, 0);
}
spl_fstrans_unmark(cookie);
kmem_free(vap, sizeof (vattr_t));
crfree(cr);
ASSERT3S(error, <=, 0);
return (error);
}
static int
zpl_mkdir(struct inode *dir, struct dentry *dentry, zpl_umode_t mode)
{
cred_t *cr = CRED();
vattr_t *vap;
struct inode *ip;
int error;
fstrans_cookie_t cookie;
crhold(cr);
vap = kmem_zalloc(sizeof (vattr_t), KM_SLEEP);
zpl_vap_init(vap, dir, mode | S_IFDIR, cr);
cookie = spl_fstrans_mark();
error = -zfs_mkdir(dir, dname(dentry), vap, &ip, cr, 0, NULL);
if (error == 0) {
d_instantiate(dentry, ip);
error = zpl_xattr_security_init(ip, dir, &dentry->d_name);
if (error == 0)
error = zpl_init_acl(ip, dir);
if (error)
(void) zfs_rmdir(dir, dname(dentry), NULL, cr, 0);
}
spl_fstrans_unmark(cookie);
kmem_free(vap, sizeof (vattr_t));
crfree(cr);
ASSERT3S(error, <=, 0);
return (error);
}
static int
zpl_mknod(struct inode *dir, struct dentry *dentry, zpl_umode_t mode,
dev_t rdev)
{
cred_t *cr = CRED();
struct inode *ip;
vattr_t *vap;
int error;
fstrans_cookie_t cookie;
/*
* We currently expect Linux to supply rdev=0 for all sockets
* and fifos, but we want to know if this behavior ever changes.
*/
if (S_ISSOCK(mode) || S_ISFIFO(mode))
ASSERT(rdev == 0);
crhold(cr);
vap = kmem_zalloc(sizeof (vattr_t), KM_SLEEP);
zpl_vap_init(vap, dir, mode, cr);
vap->va_rdev = rdev;
cookie = spl_fstrans_mark();
error = -zfs_create(dir, dname(dentry), vap, 0, mode, &ip, cr, 0, NULL);
if (error == 0) {
d_instantiate(dentry, ip);
error = zpl_xattr_security_init(ip, dir, &dentry->d_name);
if (error == 0)
error = zpl_init_acl(ip, dir);
if (error)
(void) zfs_remove(dir, dname(dentry), cr, 0);
}
spl_fstrans_unmark(cookie);
kmem_free(vap, sizeof (vattr_t));
crfree(cr);
ASSERT3S(error, <=, 0);
return (error);
}
/*
* Construct a znode+inode and initialize.
*
* This does not do a call to dmu_set_user() that is
* up to the caller to do, in case you don't want to
* return the znode
*/
static znode_t *
zfs_znode_alloc(zfs_sb_t *zsb, dmu_buf_t *db, int blksz,
dmu_object_type_t obj_type, uint64_t obj, sa_handle_t *hdl,
struct dentry *dentry, struct inode *dip)
{
znode_t *zp;
struct inode *ip;
uint64_t parent;
sa_bulk_attr_t bulk[9];
int count = 0;
ASSERT(zsb != NULL);
ip = new_inode(zsb->z_sb);
if (ip == NULL)
return (NULL);
zp = ITOZ(ip);
ASSERT(zp->z_dirlocks == NULL);
ASSERT3P(zp->z_acl_cached, ==, NULL);
ASSERT3P(zp->z_xattr_cached, ==, NULL);
zp->z_moved = 0;
zp->z_sa_hdl = NULL;
zp->z_unlinked = 0;
zp->z_atime_dirty = 0;
zp->z_mapcnt = 0;
zp->z_id = db->db_object;
zp->z_blksz = blksz;
zp->z_seq = 0x7A4653;
zp->z_sync_cnt = 0;
zp->z_is_zvol = B_FALSE;
zp->z_is_mapped = B_FALSE;
zp->z_is_ctldir = B_FALSE;
zfs_znode_sa_init(zsb, zp, db, obj_type, hdl);
SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_MODE(zsb), NULL, &zp->z_mode, 8);
SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GEN(zsb), NULL, &zp->z_gen, 8);
SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_SIZE(zsb), NULL, &zp->z_size, 8);
SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_LINKS(zsb), NULL, &zp->z_links, 8);
SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_FLAGS(zsb), NULL,
&zp->z_pflags, 8);
SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_PARENT(zsb), NULL,
&parent, 8);
SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_ATIME(zsb), NULL,
&zp->z_atime, 16);
SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_UID(zsb), NULL, &zp->z_uid, 8);
SA_ADD_BULK_ATTR(bulk, count, SA_ZPL_GID(zsb), NULL, &zp->z_gid, 8);
if (sa_bulk_lookup(zp->z_sa_hdl, bulk, count) != 0 || zp->z_gen == 0) {
if (hdl == NULL)
sa_handle_destroy(zp->z_sa_hdl);
goto error;
}
ip->i_ino = obj;
zfs_inode_update(zp);
zfs_inode_set_ops(zsb, ip);
if (insert_inode_locked(ip))
goto error;
if (dentry) {
if (zpl_xattr_security_init(ip, dip, &dentry->d_name))
goto error;
d_instantiate(dentry, ip);
}
mutex_enter(&zsb->z_znodes_lock);
list_insert_tail(&zsb->z_all_znodes, zp);
zsb->z_nr_znodes++;
membar_producer();
mutex_exit(&zsb->z_znodes_lock);
unlock_new_inode(ip);
return (zp);
error:
unlock_new_inode(ip);
iput(ip);
return NULL;
}