Use /dev/null for stdout/stderr in libzfs_run_process().

[zfs.git] / lib / libzfs / libzfs_util.c

diff --git a/lib/libzfs/libzfs_util.c b/lib/libzfs/libzfs_util.c
index f55b658..5f6763c 100644 (file)
--- a/lib/libzfs/libzfs_util.c
+++ b/lib/libzfs/libzfs_util.c
@@ -635,15 +635,22 @@ int
 libzfs_run_process(const char *path, char *argv[], int flags)
 {
        pid_t pid;
-       int rc;
+       int rc, devnull_fd;
 
        pid = vfork();
        if (pid == 0) {
+               devnull_fd = open("/dev/null", O_WRONLY);
+
+               if (devnull_fd < 0)
+                       _exit(-1);
+
                if (!(flags & STDOUT_VERBOSE))
-                       close(STDOUT_FILENO);
+                       (void) dup2(devnull_fd, STDOUT_FILENO);
 
                if (!(flags & STDERR_VERBOSE))
-                       close(STDERR_FILENO);
+                       (void) dup2(devnull_fd, STDERR_FILENO);
+
+               close(devnull_fd);
 
                (void) execvp(path, argv);
                _exit(-1);