1 files changed, 8 insertions, 6 deletions

diff --git a/src/lib/libc/stdlib/system.c b/src/lib/libc/stdlib/system.c
index 3e1b047393..dadf3fe841 100644
--- a/src/lib/libc/stdlib/system.c
+++ b/src/lib/libc/stdlib/system.c
@@ -32,7 +32,7 @@
  */
 
 #if defined(LIBC_SCCS) && !defined(lint)
-static char *rcsid = "$OpenBSD: system.c,v 1.3 1996/09/15 09:31:52 tholo Exp $";
+static char *rcsid = "$OpenBSD: system.c,v 1.4 2001/09/04 23:35:58 millert Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #include <sys/types.h>
@@ -50,7 +50,7 @@ system(command)
 {
         pid_t pid;
         sig_t intsave, quitsave;
-        int omask;
+        sigset_t mask, omask;
         int pstat;
         char *argp[] = {"sh", "-c", NULL, NULL};
 
@@ -59,13 +59,15 @@ system(command)
 
         argp[2] = (char *)command;
 
-        omask = sigblock(sigmask(SIGCHLD));
+        sigemptyset(&mask);
+        sigaddset(&mask, SIGCHLD);
+        sigprocmask(SIG_BLOCK, &mask, &omask);
         switch(pid = vfork()) {
         case -1:                        /* error */
-                (void)sigsetmask(omask);
+                sigprocmask(SIG_SETMASK, &omask, NULL);
                 return(-1);
         case 0:                         /* child */
-                (void)sigsetmask(omask);
+                sigprocmask(SIG_SETMASK, &omask, NULL);
                 execve(_PATH_BSHELL, argp, environ);
                 _exit(127);
         }
@@ -73,7 +75,7 @@ system(command)
         intsave = signal(SIGINT, SIG_IGN);
         quitsave = signal(SIGQUIT, SIG_IGN);
         pid = waitpid(pid, (int *)&pstat, 0);
-        (void)sigsetmask(omask);
+        sigprocmask(SIG_SETMASK, &omask, NULL);
         (void)signal(SIGINT, intsave);
         (void)signal(SIGQUIT, quitsave);
         return(pid == -1 ? -1 : pstat);