/*
* Stop extended attribute support on an FS.
*/
int
ufs_extattr_stop(struct mount *mp, struct thread *td)
{
struct ufs_extattr_list_entry *uele;
struct ufsmount *ump = VFSTOUFS(mp);
int error = 0;
ufs_extattr_uepm_lock(ump);
if (!(ump->um_extattr.uepm_flags & UFS_EXTATTR_UEPM_STARTED)) {
error = EOPNOTSUPP;
goto unlock;
}
while ((uele = LIST_FIRST(&ump->um_extattr.uepm_list)) != NULL) {
ufs_extattr_disable(ump, uele->uele_attrnamespace,
uele->uele_attrname, td);
}
ump->um_extattr.uepm_flags &= ~UFS_EXTATTR_UEPM_STARTED;
crfree(ump->um_extattr.uepm_ucred);
ump->um_extattr.uepm_ucred = NULL;
unlock:
ufs_extattr_uepm_unlock(ump);
return (error);
}
/*
* VFS call to manage extended attributes in UFS. If filename_vp is
* non-NULL, it must be passed in locked, and regardless of errors in
* processing, will be unlocked.
*/
int
ufs_extattrctl(struct mount *mp, int cmd, struct vnode *filename_vp,
int attrnamespace, const char *attrname)
{
struct ufsmount *ump = VFSTOUFS(mp);
struct thread *td = curthread;
int error;
/*
* Processes with privilege, but in jail, are not allowed to
* configure extended attributes.
*/
error = priv_check(td, PRIV_UFS_EXTATTRCTL);
if (error) {
if (filename_vp != NULL)
VOP_UNLOCK(filename_vp, 0);
return (error);
}
/*
* We only allow extattrctl(2) on UFS1 file systems, as UFS2 uses
* native extended attributes.
*/
if (ump->um_fstype != UFS1) {
if (filename_vp != NULL)
VOP_UNLOCK(filename_vp, 0);
return (EOPNOTSUPP);
}
switch(cmd) {
case UFS_EXTATTR_CMD_START:
if (filename_vp != NULL) {
VOP_UNLOCK(filename_vp, 0);
return (EINVAL);
}
if (attrname != NULL)
return (EINVAL);
error = ufs_extattr_start(mp, td);
return (error);
case UFS_EXTATTR_CMD_STOP:
if (filename_vp != NULL) {
VOP_UNLOCK(filename_vp, 0);
return (EINVAL);
}
if (attrname != NULL)
return (EINVAL);
error = ufs_extattr_stop(mp, td);
return (error);
case UFS_EXTATTR_CMD_ENABLE:
if (filename_vp == NULL)
return (EINVAL);
if (attrname == NULL) {
VOP_UNLOCK(filename_vp, 0);
return (EINVAL);
}
/*
* ufs_extattr_enable_with_open() will always unlock the
* vnode, regardless of failure.
*/
ufs_extattr_uepm_lock(ump);
error = ufs_extattr_enable_with_open(ump, filename_vp,
attrnamespace, attrname, td);
ufs_extattr_uepm_unlock(ump);
return (error);
case UFS_EXTATTR_CMD_DISABLE:
if (filename_vp != NULL) {
VOP_UNLOCK(filename_vp, 0);
return (EINVAL);
}
if (attrname == NULL)
return (EINVAL);
ufs_extattr_uepm_lock(ump);
error = ufs_extattr_disable(ump, attrnamespace, attrname,
td);
ufs_extattr_uepm_unlock(ump);
return (error);
default:
return (EINVAL);
}
}
/*
* VFS call to manage extended attributes in UFS. If filename_vp is
* non-NULL, it must be passed in locked, and regardless of errors in
* processing, will be unlocked.
*/
int
ufs_extattrctl(struct mount *mp, int cmd, struct vnode *filename_vp,
int attrnamespace, const char *attrname, struct proc *p)
{
struct ufsmount *ump = VFSTOUFS(mp);
int error;
#if 0
/* jail? -XXX */
/*
* Processes with privilege, but in jail, are not allowed to
* configure extended attributes.
*/
if ((error = suser_xxx(p->p_ucred, p, 0))) {
if (filename_vp != NULL)
VOP_UNLOCK(filename_vp, 0, p);
return (error);
}
#endif
switch(cmd) {
case UFS_EXTATTR_CMD_START:
if (filename_vp != NULL) {
VOP_UNLOCK(filename_vp, 0, p);
return (EINVAL);
}
if (attrname != NULL)
return (EINVAL);
error = ufs_extattr_start(mp, p);
return (error);
case UFS_EXTATTR_CMD_STOP:
if (filename_vp != NULL) {
VOP_UNLOCK(filename_vp, 0, p);
return (EINVAL);
}
if (attrname != NULL)
return (EINVAL);
error = ufs_extattr_stop(mp, p);
return (error);
case UFS_EXTATTR_CMD_ENABLE:
if (filename_vp == NULL)
return (EINVAL);
if (attrname == NULL) {
VOP_UNLOCK(filename_vp, 0, p);
return (EINVAL);
}
/*
* ufs_extattr_enable_with_open() will always unlock the
* vnode, regardless of failure.
*/
ufs_extattr_uepm_lock(ump, p);
error = ufs_extattr_enable_with_open(ump, filename_vp,
attrnamespace, attrname, p);
ufs_extattr_uepm_unlock(ump, p);
return (error);
case UFS_EXTATTR_CMD_DISABLE:
if (filename_vp != NULL) {
VOP_UNLOCK(filename_vp, 0, p);
return (EINVAL);
}
if (attrname == NULL)
return (EINVAL);
ufs_extattr_uepm_lock(ump, p);
error = ufs_extattr_disable(ump, attrnamespace, attrname, p);
ufs_extattr_uepm_unlock(ump, p);
return (error);
default:
return (EINVAL);
}
}
