1 files changed, 26 insertions, 24 deletions

diff --git a/lib/utils_cmd.c b/lib/utils_cmd.c
index 9e214bd..795840d 100644
--- a/lib/utils_cmd.c
+++ b/lib/utils_cmd.c
@@ -40,6 +40,7 @@
 
 /** includes **/
 #include "common.h"
+#include "utils.h"
 #include "utils_cmd.h"
 #include "utils_base.h"
 #include <fcntl.h>
@@ -65,29 +66,6 @@ extern char **environ;
 # define SIG_ERR ((Sigfunc *)-1)
 #endif
 
-/* This variable must be global, since there's no way the caller
- * can forcibly slay a dead or ungainly running program otherwise.
- * Multithreading apps and plugins can initialize it (via CMD_INIT)
- * in an async safe manner PRIOR to calling cmd_run() or cmd_run_array()
- * for the first time.
- *
- * The check for initialized values is atomic and can
- * occur in any number of threads simultaneously. */
-static pid_t *_cmd_pids = NULL;
-
-/* Try sysconf(_SC_OPEN_MAX) first, as it can be higher than OPEN_MAX.
- * If that fails and the macro isn't defined, we fall back to an educated
- * guess. There's no guarantee that our guess is adequate and the program
- * will die with SIGSEGV if it isn't and the upper boundary is breached. */
-#ifdef _SC_OPEN_MAX
-static long maxfd = 0;
-#elif defined(OPEN_MAX)
-# define maxfd OPEN_MAX
-#else   /* sysconf macro unavailable, so guess (may be wildly inaccurate) */
-# define maxfd 256
-#endif
-
-
 /** prototypes **/
 static int _cmd_open (char *const *, int *, int *)
         __attribute__ ((__nonnull__ (1, 2, 3)));
@@ -112,10 +90,18 @@ cmd_init (void)
         if (!maxfd && (maxfd = sysconf (_SC_OPEN_MAX)) < 0) {
                 /* possibly log or emit a warning here, since there's no
                  * guarantee that our guess at maxfd will be adequate */
-                maxfd = 256;
+                maxfd = DEFAULT_MAXFD;
         }
 #endif
 
+        /* if maxfd is unnaturally high, we force it to a lower value
+         * ( e.g. on SunOS, when ulimit is set to unlimited: 2147483647 this would cause
+         * a segfault when following calloc is called ...  ) */
+
+        if ( maxfd > MAXFD_LIMIT ) {
+                maxfd = MAXFD_LIMIT;
+        }
+
         if (!_cmd_pids)
                 _cmd_pids = calloc (maxfd, sizeof (pid_t));
 }
@@ -396,3 +382,19 @@ cmd_file_read ( char *filename, output *out, int flags)
 
         return 0;
 }
+
+void
+timeout_alarm_handler (int signo)
+{
+        size_t i;
+        if (signo == SIGALRM) {
+                printf (_("%s - Plugin timed out after %d seconds\n"),
+                                                state_text(timeout_state), timeout_interval);
+
+                if(_cmd_pids) for(i = 0; i < maxfd; i++) {
+                        if(_cmd_pids[i] != 0) kill(_cmd_pids[i], SIGKILL);
+                }
+
+                exit (timeout_state);
+        }
+}