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authorRajesh Amaravathi <rajesh@redhat.com>2011-12-06 11:35:33 +0530
committerAnand Avati <avati@gluster.com>2012-01-14 04:57:59 -0800
commit36cedb338ec1d021e189379f30100f0d983e3e01 (patch)
tree18f6cf77cb43bccd4f31a683e80341d47c10fa66 /xlators/cluster/afr/src/afr-inode-write.c
parent4e76cea78b11e9290b16c2faa85cf81b8e32b7ea (diff)
core/setxattr: prevent users from setting glusterfs xattrs
* Each xlator prevents the user from setting glusterfs-internal xattrs like trusted.gfid by handling it in respective setxattr functions. The speacial case of trusted.gfid is handled in fuse (Not in posix because posix_setxattr is used to set gfid). * For xlators which did not define setxattr and/or fsetxattr, the functions have been implemented with appropriate checks. xlator | fops-added _______________|__________________________ | 1. afr | fsetxattr 2. stripe | setxatrr and fsetxattr 3. quota | setxattr and fsetxattr Change-Id: Ib62abb7067415b23a708002f884d30e8866fbf48 BUG: 765487 Signed-off-by: Rajesh Amaravathi <rajesh@redhat.com> Reviewed-on: http://review.gluster.com/685 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Amar Tumballi <amar@gluster.com>
Diffstat (limited to 'xlators/cluster/afr/src/afr-inode-write.c')
-rw-r--r--xlators/cluster/afr/src/afr-inode-write.c227
1 files changed, 212 insertions, 15 deletions
diff --git a/xlators/cluster/afr/src/afr-inode-write.c b/xlators/cluster/afr/src/afr-inode-write.c
index 48094931f..cd6ba5e7d 100644
--- a/xlators/cluster/afr/src/afr-inode-write.c
+++ b/xlators/cluster/afr/src/afr-inode-write.c
@@ -1355,8 +1355,8 @@ afr_setxattr_unwind (call_frame_t *frame, xlator_t *this)
if (main_frame) {
AFR_STACK_UNWIND (setxattr, main_frame,
- local->op_ret, local->op_errno)
- }
+ local->op_ret, local->op_errno);
+ }
return 0;
}
@@ -1365,10 +1365,10 @@ int
afr_setxattr_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t op_ret, int32_t op_errno)
{
- afr_local_t * local = NULL;
- afr_private_t * priv = NULL;
- int call_count = -1;
- int need_unwind = 0;
+ afr_local_t *local = NULL;
+ afr_private_t *priv = NULL;
+ int call_count = -1;
+ int need_unwind = 0;
local = frame->local;
priv = this->private;
@@ -1406,10 +1406,10 @@ afr_setxattr_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int
afr_setxattr_wind (call_frame_t *frame, xlator_t *this)
{
- afr_local_t *local = NULL;
- afr_private_t *priv = NULL;
- int call_count = -1;
- int i = 0;
+ afr_local_t *local = NULL;
+ afr_private_t *priv = NULL;
+ int call_count = -1;
+ int i = 0;
local = frame->local;
priv = this->private;
@@ -1446,7 +1446,7 @@ afr_setxattr_wind (call_frame_t *frame, xlator_t *this)
int
afr_setxattr_done (call_frame_t *frame, xlator_t *this)
{
- afr_local_t * local = frame->local;
+ afr_local_t *local = frame->local;
local->transaction.unwind (frame, this);
@@ -1459,16 +1459,23 @@ int
afr_setxattr (call_frame_t *frame, xlator_t *this,
loc_t *loc, dict_t *dict, int32_t flags)
{
- afr_private_t * priv = NULL;
- afr_local_t * local = NULL;
+ afr_private_t *priv = NULL;
+ afr_local_t *local = NULL;
call_frame_t *transaction_frame = NULL;
- int ret = -1;
- int op_errno = 0;
+ data_pair_t *trav = NULL;
+ int ret = -1;
+ int op_errno = EINVAL;
VALIDATE_OR_GOTO (frame, out);
VALIDATE_OR_GOTO (this, out);
VALIDATE_OR_GOTO (this->private, out);
+ GF_IF_INTERNAL_XATTR_GOTO ("trusted.afr.*", dict,
+ trav, op_errno, out);
+
+ GF_IF_INTERNAL_XATTR_GOTO ("trusted.glusterfs.afr.*", dict,
+ trav, op_errno, out);
+
priv = this->private;
QUORUM_CHECK(setxattr,out);
@@ -1511,6 +1518,196 @@ out:
return 0;
}
+/* {{{ fsetxattr */
+
+
+int
+afr_fsetxattr_unwind (call_frame_t *frame, xlator_t *this)
+{
+ afr_local_t *local = NULL;
+ call_frame_t *main_frame = NULL;
+
+ local = frame->local;
+
+ LOCK (&frame->lock);
+ {
+ if (local->transaction.main_frame)
+ main_frame = local->transaction.main_frame;
+ local->transaction.main_frame = NULL;
+ }
+ UNLOCK (&frame->lock);
+
+ if (main_frame) {
+ AFR_STACK_UNWIND (fsetxattr, main_frame,
+ local->op_ret, local->op_errno);
+ }
+ return 0;
+}
+
+
+int
+afr_fsetxattr_wind_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int32_t op_ret, int32_t op_errno)
+{
+ afr_local_t *local = NULL;
+ afr_private_t *priv = NULL;
+ int call_count = -1;
+ int need_unwind = 0;
+
+ local = frame->local;
+ priv = this->private;
+
+ LOCK (&frame->lock);
+ {
+ if (op_ret != -1) {
+ if (local->success_count == 0) {
+ local->op_ret = op_ret;
+ }
+ local->success_count++;
+
+ if (local->success_count == priv->child_count) {
+ need_unwind = 1;
+ }
+ }
+
+ local->op_errno = op_errno;
+ }
+ UNLOCK (&frame->lock);
+
+ if (need_unwind)
+ local->transaction.unwind (frame, this);
+
+ call_count = afr_frame_return (frame);
+
+ if (call_count == 0) {
+ local->transaction.resume (frame, this);
+ }
+
+ return 0;
+}
+
+
+int
+afr_fsetxattr_wind (call_frame_t *frame, xlator_t *this)
+{
+ afr_local_t *local = NULL;
+ afr_private_t *priv = NULL;
+ int call_count = -1;
+ int i = 0;
+
+ local = frame->local;
+ priv = this->private;
+
+ call_count = afr_pre_op_done_children_count (local->transaction.pre_op,
+ priv->child_count);
+
+ if (call_count == 0) {
+ local->transaction.resume (frame, this);
+ return 0;
+ }
+
+ local->call_count = call_count;
+
+ for (i = 0; i < priv->child_count; i++) {
+ if (local->transaction.pre_op[i]) {
+ STACK_WIND_COOKIE (frame, afr_fsetxattr_wind_cbk,
+ (void *) (long) i,
+ priv->children[i],
+ priv->children[i]->fops->fsetxattr,
+ local->fd,
+ local->cont.fsetxattr.dict,
+ local->cont.fsetxattr.flags);
+
+ if (!--call_count)
+ break;
+ }
+ }
+
+ return 0;
+}
+
+
+int
+afr_fsetxattr_done (call_frame_t *frame, xlator_t *this)
+{
+ afr_local_t *local = frame->local;
+
+ local->transaction.unwind (frame, this);
+
+ AFR_STACK_DESTROY (frame);
+
+ return 0;
+}
+
+int
+afr_fsetxattr (call_frame_t *frame, xlator_t *this,
+ fd_t *fd, dict_t *dict, int32_t flags)
+{
+ afr_private_t *priv = NULL;
+ afr_local_t *local = NULL;
+ call_frame_t *transaction_frame = NULL;
+ int ret = -1;
+ int op_errno = EINVAL;
+ data_pair_t *trav = NULL;
+
+ VALIDATE_OR_GOTO (frame, out);
+ VALIDATE_OR_GOTO (this, out);
+ VALIDATE_OR_GOTO (this->private, out);
+
+ GF_IF_INTERNAL_XATTR_GOTO ("trusted.afr.*", dict,
+ trav, op_errno, out);
+
+ GF_IF_INTERNAL_XATTR_GOTO ("trusted.glusterfs.afr.*", dict,
+ trav, op_errno, out);
+
+ if (ret)
+ goto out;
+
+ priv = this->private;
+
+ QUORUM_CHECK(fsetxattr,out);
+
+ ALLOC_OR_GOTO (local, afr_local_t, out);
+
+ ret = afr_local_init (local, priv, &op_errno);
+ if (ret < 0)
+ goto out;
+
+ transaction_frame = copy_frame (frame);
+ if (!transaction_frame) {
+ goto out;
+ }
+
+ transaction_frame->local = local;
+
+ local->op_ret = -1;
+
+ local->cont.fsetxattr.dict = dict_ref (dict);
+ local->cont.fsetxattr.flags = flags;
+
+ local->transaction.fop = afr_fsetxattr_wind;
+ local->transaction.done = afr_fsetxattr_done;
+ local->transaction.unwind = afr_fsetxattr_unwind;
+
+ local->fd = fd_ref (fd);
+
+ local->transaction.main_frame = frame;
+ local->transaction.start = LLONG_MAX - 1;
+ local->transaction.len = 0;
+
+ afr_transaction (transaction_frame, this, AFR_METADATA_TRANSACTION);
+
+ ret = 0;
+out:
+ if (ret < 0) {
+ if (transaction_frame)
+ AFR_STACK_DESTROY (transaction_frame);
+ AFR_STACK_UNWIND (fsetxattr, frame, -1, op_errno);
+ }
+
+ return 0;
+}
+
/* }}} */
/* {{{ removexattr */