check_procs: Ignore ENOENT when checking for myself

Previously, when a process exited between the call to /bin/ps and
stat("/proc/his/exe") was exiting it was not considered as possible
instance of check_procs. This commit makes check_procs ignore all
processes where /proc/pid/exe does not exist.

1 files changed, 4 insertions, 1 deletions

diff --git a/plugins/check_procs.c b/plugins/check_procs.c
index 6a30ce0..d6441f0 100644
--- a/plugins/check_procs.c
+++ b/plugins/check_procs.c
@@ -42,6 +42,7 @@ const char *email = "nagiosplug-devel@lists.sourceforge.net";
 #include "regex.h"
 
 #include <pwd.h>
+#include <errno.h>
 
 #ifdef HAVE_SYS_STAT_H
 #include <sys/stat.h>
@@ -157,6 +158,7 @@ main (int argc, char **argv)
         int crit = 0; /* number of processes in crit state */
         int i = 0, j = 0;
         int result = STATE_UNKNOWN;
+        int ret;
         output chld_out, chld_err;
 
         setlocale (LC_ALL, "");
@@ -241,7 +243,8 @@ main (int argc, char **argv)
 
                         /* Ignore self */
                         if ((usepid && mypid == procpid) ||
-                                (!usepid && stat_exe(procpid, &statbuf) != -1 && statbuf.st_dev == mydev && statbuf.st_ino == myino)) {
+                                (!usepid && ((ret = stat_exe(procpid, &statbuf) != -1) && statbuf.st_dev == mydev && statbuf.st_ino == myino) ||
+                                 (ret == -1 && errno == ENOENT))) {
                                 if (verbose >= 3)
                                          printf("not considering - is myself\n");
                                 continue;