Do not use the _syscall5 macro -- use syscall(2) instead

[oweals/busybox.git] / util-linux / fdflush.c

diff --git a/util-linux/fdflush.c b/util-linux/fdflush.c
index 51b0c2baca4260f57eeb6c99dd24be183bae0c5c..c3fcf3325c3e1fc08293a2a71dd57d99f1e70b7e 100644 (file)
--- a/util-linux/fdflush.c
+++ b/util-linux/fdflush.c
@@ -1,8 +1,9 @@
+/* vi: set sw=4 ts=4: */
 /*
  * Mini fdflush implementation for busybox
  *
- *
- * Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
+ * Copyright (C) 1995, 1996 by Bruce Perens <bruce@perens.com>.
+ * Copyright (C) 2003 by Erik Andersen <andersen@codeoet.org>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -20,33 +21,34 @@
  *
  */
 
-#include "internal.h"
 #include <stdio.h>
 #include <sys/ioctl.h>
-#include <linux/fd.h>
 #include <fcntl.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include "busybox.h"
 
+/* From <linux/fd.h> */
+#define FDFLUSH  _IO(2,0x4b)
 
 extern int fdflush_main(int argc, char **argv)
 {
-    int        value;
-    int        fd;
-    if ( **(argv+1) == '-' ) {
-       usage( "fdflush device\n");
-    }
+       int fd, result;
+
+       if (argc <= 1)
+               bb_show_usage();
 
-    fd = open(*argv, 0);
-    if ( fd < 0 ) {
-       perror(*argv);
-       exit(FALSE);
-    }
+       fd = bb_xopen(argv[1], 0);
 
-    value = ioctl(fd, FDFLUSH, 0);
-    close(fd);
+       result = ioctl(fd, FDFLUSH, 0);
+#ifdef CONFIG_FEATURE_CLEAN_UP
+       close(fd);
+#endif
+       if (result) {
+               bb_perror_nomsg_and_die();
+       }
 
-    if ( value ) {
-       perror(*argv);
-       exit(FALSE);
-    }
-    exit (TRUE);
+       /* Don't bother closing.  Exit does
+        * that, so we can save a few bytes */
+       return EXIT_SUCCESS;
 }