busybox/coreutils/realpath.c

47 lines
1.1 KiB
C
Raw Normal View History

2006-05-20 00:05:03 +05:30
/* vi: set sw=4 ts=4: */
2002-12-10 05:44:33 +05:30
2003-03-19 14:43:01 +05:30
/* BB_AUDIT SUSv3 N/A -- Apparently a busybox extension. */
/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
*
* Now does proper error checking on output and returns a failure exit code
* if one or more paths cannot be resolved.
2006-05-20 00:05:03 +05:30
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
2003-03-19 14:43:01 +05:30
*/
#include "libbb.h"
2002-12-10 05:44:33 +05:30
int realpath_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int realpath_main(int argc ATTRIBUTE_UNUSED, char **argv)
2002-12-10 05:44:33 +05:30
{
2003-03-19 14:43:01 +05:30
int retval = EXIT_SUCCESS;
#if PATH_MAX > (BUFSIZ+1)
RESERVE_CONFIG_BUFFER(resolved_path, PATH_MAX);
# define resolved_path_MUST_FREE 1
#else
#define resolved_path bb_common_bufsiz1
# define resolved_path_MUST_FREE 0
#endif
2002-12-10 05:44:33 +05:30
if (!*++argv) {
2003-03-19 14:43:01 +05:30
bb_show_usage();
2002-12-10 05:44:33 +05:30
}
do {
if (realpath(*argv, resolved_path) != NULL) {
2002-12-10 05:44:33 +05:30
puts(resolved_path);
} else {
2003-03-19 14:43:01 +05:30
retval = EXIT_FAILURE;
bb_simple_perror_msg(*argv);
2002-12-10 05:44:33 +05:30
}
} while (*++argv);
#if ENABLE_FEATURE_CLEAN_UP && resolved_path_MUST_FREE
RELEASE_CONFIG_BUFFER(resolved_path);
2003-03-19 14:43:01 +05:30
#endif
2002-12-10 05:44:33 +05:30
2006-10-27 04:51:47 +05:30
fflush_stdout_and_exit(retval);
}