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author | Niels de Vos <ndevos@redhat.com> | 2015-08-10 18:01:32 +0200 |
---|---|---|
committer | Pranith Kumar Karampuri <pkarampu@redhat.com> | 2015-09-28 02:51:08 -0700 |
commit | d41bbb6dbaf64a8ef55e40e0550b83daac1eeb7a (patch) | |
tree | 742e3154c5f1f826aec5a3d59313e9aed9161310 /xlators/mount/fuse/src/fuse-bridge.h | |
parent | 5f0da098ad9c1280f8c52b44d37e480e56c17913 (diff) |
fuse: add "resolve-gids" mount option to overcome 32-groups limit
Add a --resolve-gids commandline option to the glusterfs binary. This
option gets set when executing "mount -t glusterfs -o resolve-gids ...".
This option is most useful in combination with the "acl" mount option.
POSIX ACL permission checking is done on the FUSE-client side to improve
performance (in addition to the checking on the bricks).
The fuse-bridge reads /proc/$PID/status by default, and this file
contains maximum 32 groups. Any local (client-side) permission checking
that requires more than the first 32 groups will fail.
By enabling the "resolve-gids" option, the fuse-bridge will call
getgrouplist() to retrieve all the groups from the user accessing the
mountpoint. This is comparable to how "nfs.server-aux-gids" works.
Note that when a user belongs to more than ~93 groups, the volume option
server.manage-gids needs to be enabled too. Without this option, the
RPC-layer will need to reduce the number of groups to make them fit in
the RPC-header.
Cherry picked from commit 64a5bf3749c67fcc00773a2716d0c7b61b0b4417:
> Change-Id: I7ede90d0e41bcf55755cced5747fa0fb1699edb2
> BUG: 1246275
> Signed-off-by: Niels de Vos <ndevos@redhat.com>
> Reviewed-on: http://review.gluster.org/11732
> Tested-by: NetBSD Build System <jenkins@build.gluster.org>
> Reviewed-by: Ravishankar N <ravishankar@redhat.com>
> Tested-by: Gluster Build System <jenkins@build.gluster.com>
> Reviewed-by: jiffin tony Thottan <jthottan@redhat.com>
> Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Change-Id: I7ede90d0e41bcf55755cced5747fa0fb1699edb2
BUG: 1246397
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Reviewed-on: http://review.gluster.org/11875
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Diffstat (limited to 'xlators/mount/fuse/src/fuse-bridge.h')
-rw-r--r-- | xlators/mount/fuse/src/fuse-bridge.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/xlators/mount/fuse/src/fuse-bridge.h b/xlators/mount/fuse/src/fuse-bridge.h index 342d3c93c0f..bc5ea2cd4d3 100644 --- a/xlators/mount/fuse/src/fuse-bridge.h +++ b/xlators/mount/fuse/src/fuse-bridge.h @@ -132,6 +132,9 @@ struct fuse_private { /* fini started, helps prevent multiple epoll worker threads * firing up the fini routine */ gf_boolean_t fini_invoked; + + /* resolve gid with getgrouplist() instead of /proc/%d/status */ + gf_boolean_t resolve_gids; }; typedef struct fuse_private fuse_private_t; |