static int
zpl_xattr_set_dir(struct inode *ip, const char *name, const void *value,
size_t size, int flags, cred_t *cr)
{
struct inode *dxip = NULL;
struct inode *xip = NULL;
vattr_t *vap = NULL;
ssize_t wrote;
int lookup_flags, error;
const int xattr_mode = S_IFREG | 0644;
/*
* Lookup the xattr directory. When we're adding an entry pass
* CREATE_XATTR_DIR to ensure the xattr directory is created.
* When removing an entry this flag is not passed to avoid
* unnecessarily creating a new xattr directory.
*/
lookup_flags = LOOKUP_XATTR;
if (value != NULL)
lookup_flags |= CREATE_XATTR_DIR;
error = -zfs_lookup(ip, NULL, &dxip, lookup_flags, cr, NULL, NULL);
if (error)
goto out;
/* Lookup a specific xattr name in the directory */
error = -zfs_lookup(dxip, (char *)name, &xip, 0, cr, NULL, NULL);
if (error && (error != -ENOENT))
goto out;
error = 0;
/* Remove a specific name xattr when value is set to NULL. */
if (value == NULL) {
if (xip)
error = -zfs_remove(dxip, (char *)name, cr);
goto out;
}
/* Lookup failed create a new xattr. */
if (xip == NULL) {
vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
vap->va_mode = xattr_mode;
vap->va_mask = ATTR_MODE;
vap->va_uid = crgetfsuid(cr);
vap->va_gid = crgetfsgid(cr);
error = -zfs_create(dxip, (char *)name, vap, 0, 0644, &xip,
cr, 0, NULL);
if (error)
goto out;
}
ASSERT(xip != NULL);
error = -zfs_freesp(ITOZ(xip), 0, 0, xattr_mode, TRUE);
if (error)
goto out;
wrote = zpl_write_common(xip, value, size, 0, UIO_SYSSPACE, 0, cr);
if (wrote < 0)
error = wrote;
out:
if (vap)
kmem_free(vap, sizeof(vattr_t));
if (xip)
iput(xip);
if (dxip)
iput(dxip);
if (error == -ENOENT)
error = -ENODATA;
ASSERT3S(error, <=, 0);
return (error);
}
static int
zpl_xattr_set_dir(struct inode *ip, const char *name, const void *value,
size_t size, int flags, cred_t *cr)
{
struct inode *dxip = NULL;
struct inode *xip = NULL;
vattr_t *vap = NULL;
ssize_t wrote;
int error;
const int xattr_mode = S_IFREG | 0644;
/* Lookup the xattr directory and create it if required. */
error = -zfs_lookup(ip, NULL, &dxip, LOOKUP_XATTR | CREATE_XATTR_DIR,
cr, NULL, NULL);
if (error)
goto out;
/* Lookup a specific xattr name in the directory */
error = -zfs_lookup(dxip, (char *)name, &xip, 0, cr, NULL, NULL);
if (error && (error != -ENOENT))
goto out;
error = 0;
/* Remove a specific name xattr when value is set to NULL. */
if (value == NULL) {
if (xip)
error = -zfs_remove(dxip, (char *)name, cr);
goto out;
}
/* Lookup failed create a new xattr. */
if (xip == NULL) {
vap = kmem_zalloc(sizeof(vattr_t), KM_SLEEP);
vap->va_mode = xattr_mode;
vap->va_mask = ATTR_MODE;
vap->va_uid = crgetfsuid(cr);
vap->va_gid = crgetfsgid(cr);
error = -zfs_create(dxip, (char *)name, vap, 0, 0644, &xip,
cr, 0, NULL);
if (error)
goto out;
}
ASSERT(xip != NULL);
error = -zfs_freesp(ITOZ(xip), 0, 0, xattr_mode, TRUE);
if (error)
goto out;
wrote = zpl_write_common(xip, value, size, 0, UIO_SYSSPACE, 0, cr);
if (wrote < 0)
error = wrote;
out:
if (vap)
kmem_free(vap, sizeof(vattr_t));
if (xip)
VN_RELE(xip);
if (dxip)
VN_RELE(dxip);
if (error == -ENOENT)
error = -ENODATA;
ASSERT3S(error, <=, 0);
return (error);
}
