release/src/router/busybox/coreutils/realpath.c

   1 /* vi: set sw=4 ts=4: */
   2
   3 /* BB_AUDIT SUSv3 N/A -- Apparently a busybox extension. */
   4
   5 /* Mar 16, 2003      Manuel Novoa III   (mjn3@codepoet.org)
   6  *
   7  * Now does proper error checking on output and returns a failure exit code
   8  * if one or more paths cannot be resolved.
   9  *
  10  * Licensed under GPLv2 or later, see file LICENSE in this source tree.
  11  */
  12
  13 #include "libbb.h"
  14
  15 int realpath_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
  16 int realpath_main(int argc UNUSED_PARAM, char **argv)
  17 {
  18         int retval = EXIT_SUCCESS;
  19
  20         if (!*++argv) {
  21                 bb_show_usage();
  22         }
  23
  24         do {
  25                 char *resolved_path = xmalloc_realpath(*argv);
  26                 if (resolved_path != NULL) {
  27                         puts(resolved_path);
  28                         free(resolved_path);
  29                 } else {
  30                         retval = EXIT_FAILURE;
  31                         bb_simple_perror_msg(*argv);
  32                 }
  33         } while (*++argv);
  34
  35         fflush_stdout_and_exit(retval);
  36 }