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

>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>

Change-Id: I26b7230433ecbbed6e6914ed39221a478c0266a8
BUG: 1403109
Signed-off-by: Kotresh HR <khiremat@redhat.com>
Reviewed-on: http://review.gluster.org/16085
Tested-by: Atin Mukherjee <amukherj@redhat.com>
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: Niels de Vos <ndevos@redhat.com>

0 files changed, 0 insertions, 0 deletions