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authorAvra Sengupta <asengupt@redhat.com>2013-06-26 16:50:53 +0530
committerAnand Avati <avati@redhat.com>2013-07-11 11:52:31 -0700
commit55ccdb71466ca8459f29454e9eee38fa7aa63e95 (patch)
tree3faf2dde2b906a7941ad5d20586671d4ffa7e5c6 /xlators/mount
parent869b0f2c272d8e0f3afb7ad5f15ebc0f7c900a76 (diff)
mount/fuse: expose 'glusterfs.gfid*' virtual xattr key
currently two keys are exposed: 'glusterfs.gfid' : output is 16byte binary gfid 'glusterfs.gfid.string' : output is 36 byte canonical format of gfid e.g. [root@supernova glusterfs]# getfattr -n glusterfs.gfid -e hex f0 glusterfs.gfid=0x68305acb73e541719804fcf36a4857e8 [root@supernova glusterfs]# getfattr -n glusterfs.gfid.string f0 glusterfs.gfid.string="68305acb-73e5-4171-9804-fcf36a4857e8" early consumers for this key would be geo-replication (as it has being designed to do namespace operations on gfid from the mount point, thereby needing the GFID for entry operations on the slave). Change-Id: I10b23dbd11628566ad6924334253f5d85d01a519 BUG: 847839 Original Author: Venky Shankar <vshankar@redhat.com> Signed-off-by: Avra Sengupta <asengupt@redhat.com> Reviewed-on: http://review.gluster.org/5129 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
Diffstat (limited to 'xlators/mount')
-rw-r--r--xlators/mount/fuse/src/fuse-bridge.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/xlators/mount/fuse/src/fuse-bridge.c b/xlators/mount/fuse/src/fuse-bridge.c
index 1b97d43..5b6fed9 100644
--- a/xlators/mount/fuse/src/fuse-bridge.c
+++ b/xlators/mount/fuse/src/fuse-bridge.c
@@ -11,6 +11,7 @@
#include <sys/wait.h>
#include "fuse-bridge.h"
#include "mount-gluster-compat.h"
+#include "glusterfs.h"
#ifdef __NetBSD__
#undef open /* in perfuse.h, pulled from mount-gluster-compat.h */
@@ -3161,6 +3162,8 @@ out:
void
fuse_getxattr_resume (fuse_state_t *state)
{
+ char *value = NULL;
+
if (!state->loc.inode) {
gf_log ("glusterfs-fuse", GF_LOG_WARNING,
"%"PRIu64": GETXATTR %s/%"PRIu64" (%s) "
@@ -3178,6 +3181,46 @@ fuse_getxattr_resume (fuse_state_t *state)
state->fd = fd_lookup (state->loc.inode, state->finh->pid);
#endif /* GF_TEST_FFOP */
+ if (state->name &&
+ (strcmp (state->name, VIRTUAL_GFID_XATTR_KEY) == 0)) {
+ /* send glusterfs gfid in binary form */
+
+ value = GF_CALLOC (16 + 1, sizeof(char),
+ gf_common_mt_char);
+ if (!value) {
+ send_fuse_err (state->this, state->finh, ENOMEM);
+ goto internal_out;
+ }
+ memcpy (value, state->loc.inode->gfid, 16);
+
+ send_fuse_xattr (THIS, state->finh, value, 16, state->size);
+ GF_FREE (value);
+ internal_out:
+ free_fuse_state (state);
+ return;
+ }
+
+ if (state->name &&
+ (strcmp (state->name, VIRTUAL_GFID_XATTR_KEY_STR) == 0)) {
+ /* transform binary gfid to canonical form */
+
+ value = GF_CALLOC (UUID_CANONICAL_FORM_LEN + 1, sizeof(char),
+ gf_common_mt_char);
+ if (!value) {
+ send_fuse_err (state->this, state->finh, ENOMEM);
+ goto internal_out1;
+ }
+ uuid_utoa_r (state->loc.inode->gfid, value);
+
+ send_fuse_xattr (THIS, state->finh, value,
+ UUID_CANONICAL_FORM_LEN, state->size);
+ GF_FREE (value);
+ internal_out1:
+ free_fuse_state (state);
+ return;
+ }
+
+
if (state->fd) {
gf_log ("glusterfs-fuse", GF_LOG_TRACE,
"%"PRIu64": GETXATTR %p/%"PRIu64" (%s)", state->finh->unique,