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Patch for Debian bug #180310
Generate some (low-severity) log information whenever setrlimit() fails,
for debugging purposes.
Authors: Sam Hartman <hartmans@debian.org>
Upstream status: submitted in <20070830171918.GB30563@dario.dodds.net>
Index: Linux-PAM/modules/pam_limits/pam_limits.c
===================================================================
--- Linux-PAM/modules/pam_limits/pam_limits.c.orig
+++ Linux-PAM/modules/pam_limits/pam_limits.c
@@ -622,6 +622,19 @@
if (pl->limits[i].limit.rlim_cur > pl->limits[i].limit.rlim_max)
pl->limits[i].limit.rlim_cur = pl->limits[i].limit.rlim_max;
retval = setrlimit(i, &pl->limits[i].limit);
+ if (retval != 0 && (i != RLIMIT_NOFILE
+ || pl->limits[i].limit.rlim_cur != RLIM_INFINITY))
+ {
+ int save_errno = errno;
+ pam_syslog(pamh, LOG_DEBUG,
+ "setrlimit limit #%d to soft=%d, hard=%d failed:"
+ " %m; uid=%lu,euid=%lu", i,
+ pl->limits[i].limit.rlim_cur,
+ pl->limits[i].limit.rlim_max,
+ (unsigned long) getuid(),
+ (unsigned long) geteuid());
+ errno = save_errno;
+ }
if (retval == -1 && errno==EPERM)
continue;
status |= retval;
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