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 //usage:#define realpath_trivial_usage
  14 //usage:       "FILE..."
  15 //usage:#define realpath_full_usage "\n\n"
  16 //usage:       "Return the absolute pathnames of given FILE"
  17
  18 #include "libbb.h"
  19
  20 int realpath_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
  21 int realpath_main(int argc UNUSED_PARAM, char **argv)
  22 {
  23         int retval = EXIT_SUCCESS;
  24
  25         if (!*++argv) {
  26                 bb_show_usage();
  27         }
  28
  29         do {
  30                 char *resolved_path = xmalloc_realpath(*argv);
  31                 if (resolved_path != NULL) {
  32                         puts(resolved_path);
  33                         free(resolved_path);
  34                 } else {
  35                         retval = EXIT_FAILURE;
  36                         bb_simple_perror_msg(*argv);
  37                 }
  38         } while (*++argv);
  39
  40         fflush_stdout_and_exit(retval);
  41 }