diff options
| author | Kotresh HR <khiremat@redhat.com> | 2016-12-07 07:36:19 -0500 |
|---|---|---|
| committer | Atin Mukherjee <amukherj@redhat.com> | 2016-12-08 01:12:07 -0800 |
| commit | 41a71b47f75a52f50ad2754cce679407ebade767 (patch) | |
| tree | 4538a7caa5646c5c669b2d909bd55d2e2866c8e9 | |
| parent | 369c619f946f9ec1cf86cc83a7dcb11c29f1f0c7 (diff) | |
glusterd/geo-rep: Fix glusterd crash
Problem:
glusterd crashes when geo-rep mountbroker setup is
created if the slave user length is more than
8 characters.
Cause:
_POSIX_LOGIN_NAME_MAX is used which is 9 including
NULL byte.
Analysis:
While the man page says it sufficient for portability, but
acutally it's not. Linux allows the creation of username
upto 32 characters by default where the max length is 256.
And NetBSD's max is 17.
Linux:
#getconf LOGIN_NAME_MAX
256
NetBSD:
#getconf LOGIN_NAME_MAX
17
Fix:
Use LOGIN_NAME_MAX instead of _POSIX_LOGIN_NAME_MAX
Change-Id: I26b7230433ecbbed6e6914ed39221a478c0266a8
BUG: 1368138
Signed-off-by: Kotresh HR <khiremat@redhat.com>
Reviewed-on: http://review.gluster.org/16053
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Aravinda VK <avishwan@redhat.com>
Reviewed-by: Atin Mukherjee <amukherj@redhat.com>
| -rw-r--r-- | libglusterfs/src/compat.h | 4 | ||||
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd-geo-rep.c | 13 | ||||
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd-geo-rep.h | 2 |
3 files changed, 16 insertions, 3 deletions
diff --git a/libglusterfs/src/compat.h b/libglusterfs/src/compat.h index 69adfbcd7fe..ea722028eb5 100644 --- a/libglusterfs/src/compat.h +++ b/libglusterfs/src/compat.h @@ -158,6 +158,10 @@ enum { #define s6_addr32 __u6_addr.__u6_addr32 #endif +#ifndef LOGIN_NAME_MAX +#define LOGIN_NAME_MAX 256 +#endif + /* Posix dictates NAME_MAX to be used */ # ifndef NAME_MAX # ifdef MAXNAMLEN diff --git a/xlators/mgmt/glusterd/src/glusterd-geo-rep.c b/xlators/mgmt/glusterd/src/glusterd-geo-rep.c index 0de477be206..8d11d95d915 100644 --- a/xlators/mgmt/glusterd/src/glusterd-geo-rep.c +++ b/xlators/mgmt/glusterd/src/glusterd-geo-rep.c @@ -585,7 +585,7 @@ struct dictidxmark { struct slave_vol_config { char old_slvhost[_POSIX_HOST_NAME_MAX+1]; - char old_slvuser[_POSIX_LOGIN_NAME_MAX]; + char old_slvuser[LOGIN_NAME_MAX]; unsigned old_slvidx; char slave_voluuid[GF_UUID_BUF_SIZE]; }; @@ -2919,6 +2919,14 @@ get_slavehost_from_voluuid (dict_t *dict, char *key, data_t *value, void *data) /* To go past username in non-root geo-rep session */ tmp = strchr (slave_host, '@'); if (tmp) { + if ((tmp - slave_host) >= LOGIN_NAME_MAX) { + gf_msg (this->name, GF_LOG_ERROR, 0, + GD_MSG_SLAVE_VOL_PARSE_FAIL, + "Invalid slave user length in %s", + slave_host); + ret = -2; + goto out; + } strncpy (slave_vol->old_slvuser, slave_host, (tmp - slave_host)); slave_vol->old_slvuser[(tmp - slave_host) + 1] @@ -3337,7 +3345,8 @@ glusterd_op_stage_gsync_create (dict_t *dict, char **op_errstr) } } else if (ret == -2) { snprintf (errmsg, sizeof (errmsg), "get_slavehost_from_voluuid" - " failed %s %s!!", slave_host, slave_vol); + " failed for %s::%s. Please check the glusterd logs.", + slave_host, slave_vol); gf_msg (this->name, GF_LOG_INFO, 0, GD_MSG_FORCE_CREATE_SESSION, "get_slavehost_from_voluuid failed %s %s!!", slave_host, slave_vol); diff --git a/xlators/mgmt/glusterd/src/glusterd-geo-rep.h b/xlators/mgmt/glusterd/src/glusterd-geo-rep.h index 0524ec48fca..045bc2e4ba7 100644 --- a/xlators/mgmt/glusterd/src/glusterd-geo-rep.h +++ b/xlators/mgmt/glusterd/src/glusterd-geo-rep.h @@ -20,7 +20,7 @@ /* slave info format: * <master host uuid>:ssh://{<slave_user>@}<slave host>::<slave volume> \ * :<slave volume uuid> */ -#define VOLINFO_SLAVE_URL_MAX (_POSIX_LOGIN_NAME_MAX + (2*GF_UUID_BUF_SIZE) \ +#define VOLINFO_SLAVE_URL_MAX (LOGIN_NAME_MAX + (2*GF_UUID_BUF_SIZE) \ + SLAVE_URL_INFO_MAX + 10) typedef struct glusterd_gsync_status_temp { |