1 files changed, 4 insertions, 2 deletions

diff --git a/plugins/runcmd.c b/plugins/runcmd.c
index 102191e..9816142 100644
--- a/plugins/runcmd.c
+++ b/plugins/runcmd.c
@@ -88,8 +88,7 @@ extern void die (int, const char *, ...)
  * through this api and thus achieve async-safeness throughout the api */
 void np_runcmd_init(void)
 {
-        if(maxfd == 0)
-                maxfd = open_max();
+  long maxfd = open_max();
         if(!np_pids) np_pids = calloc(maxfd, sizeof(pid_t));
 }
 
@@ -192,6 +191,7 @@ np_runcmd_open(const char *cmdstring, int *pfd, int *pfderr)
                 /* close all descriptors in np_pids[]
                  * This is executed in a separate address space (pure child),
                  * so we don't have to worry about async safety */
+    long maxfd = open_max();
                 for (i = 0; i < maxfd; i++)
                         if(np_pids[i] > 0)
                                 close (i);
@@ -219,6 +219,7 @@ np_runcmd_close(int fd)
         pid_t pid;
 
         /* make sure this fd was opened by popen() */
+  long maxfd = open_max();
         if(fd < 0 || fd > maxfd || !np_pids || (pid = np_pids[fd]) == 0)
                 return -1;
 
@@ -242,6 +243,7 @@ runcmd_timeout_alarm_handler (int signo)
         if (signo == SIGALRM)
                 puts(_("CRITICAL - Plugin timed out while executing system call"));
 
+  long maxfd = open_max();
         if(np_pids) for(i = 0; i < maxfd; i++) {
                 if(np_pids[i] != 0) kill(np_pids[i], SIGKILL);
         }