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authorNiels de Vos <ndevos@redhat.com>2015-08-10 18:01:32 +0200
committerPranith Kumar Karampuri <pkarampu@redhat.com>2015-09-28 02:51:08 -0700
commitd41bbb6dbaf64a8ef55e40e0550b83daac1eeb7a (patch)
tree742e3154c5f1f826aec5a3d59313e9aed9161310 /glusterfsd
parent5f0da098ad9c1280f8c52b44d37e480e56c17913 (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 'glusterfsd')
-rw-r--r--glusterfsd/src/glusterfsd.c17
-rw-r--r--glusterfsd/src/glusterfsd.h1
2 files changed, 18 insertions, 0 deletions
diff --git a/glusterfsd/src/glusterfsd.c b/glusterfsd/src/glusterfsd.c
index ffd1eb4..c86f5f0 100644
--- a/glusterfsd/src/glusterfsd.c
+++ b/glusterfsd/src/glusterfsd.c
@@ -203,6 +203,8 @@ static struct argp_option gf_options[] = {
{"gid-timeout", ARGP_GID_TIMEOUT_KEY, "SECONDS", 0,
"Set auxilary group list timeout to SECONDS for fuse translator "
"[default: 300]"},
+ {"resolve-gids", ARGP_RESOLVE_GIDS_KEY, 0, 0,
+ "Resolve all auxilary groups in fuse translator (max 32 otherwise)"},
{"background-qlen", ARGP_FUSE_BACKGROUND_QLEN_KEY, "N", 0,
"Set fuse module's background queue length to N "
"[default: 64]"},
@@ -432,6 +434,16 @@ set_fuse_mount_options (glusterfs_ctx_t *ctx, dict_t *options)
goto err;
}
}
+
+ if (cmd_args->resolve_gids) {
+ ret = dict_set_static_ptr (options, "resolve-gids", "on");
+ if (ret < 0) {
+ gf_msg ("glusterfsd", GF_LOG_ERROR, 0, glusterfsd_msg_4,
+ "resolve-gids");
+ goto err;
+ }
+ }
+
if (cmd_args->background_qlen) {
ret = dict_set_int32 (options, "background-qlen",
cmd_args->background_qlen);
@@ -1080,6 +1092,11 @@ parse_opts (int key, char *arg, struct argp_state *state)
argp_failure(state, -1, 0, "unknown group list timeout %s", arg);
break;
+
+ case ARGP_RESOLVE_GIDS_KEY:
+ cmd_args->resolve_gids = 1;
+ break;
+
case ARGP_FUSE_BACKGROUND_QLEN_KEY:
if (!gf_string2int (arg, &cmd_args->background_qlen))
break;
diff --git a/glusterfsd/src/glusterfsd.h b/glusterfsd/src/glusterfsd.h
index d183b05..f5f0e62 100644
--- a/glusterfsd/src/glusterfsd.h
+++ b/glusterfsd/src/glusterfsd.h
@@ -95,6 +95,7 @@ enum argp_option_keys {
ARGP_LOG_FLUSH_TIMEOUT = 171,
ARGP_SECURE_MGMT_KEY = 172,
ARGP_GLOBAL_TIMER_WHEEL = 173,
+ ARGP_RESOLVE_GIDS_KEY = 174,
};
struct _gfd_vol_top_priv_t {