/* vi: set sw=4 ts=4: */
-
-/* BB_AUDIT SUSv3 N/A -- Apparently a busybox extension. */
-
-/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
+/*
+ * 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.
*
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
+//config:config REALPATH
+//config: bool "realpath (1.1 kb)"
+//config: default y
+//config: help
+//config: Return the canonicalized absolute pathname.
+//config: This isn't provided by GNU shellutils, but where else does it belong.
+
+//applet:IF_REALPATH(APPLET_NOFORK(realpath, realpath, BB_DIR_USR_BIN, BB_SUID_DROP, realpath))
+
+//kbuild:lib-$(CONFIG_REALPATH) += realpath.o
+
+/* BB_AUDIT SUSv3 N/A -- Apparently a busybox extension. */
+
+//usage:#define realpath_trivial_usage
+//usage: "FILE..."
+//usage:#define realpath_full_usage "\n\n"
+//usage: "Return the absolute pathnames of given FILE"
#include "libbb.h"
-int realpath_main(int argc, char **argv);
-int realpath_main(int argc, char **argv)
+int realpath_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int realpath_main(int argc UNUSED_PARAM, char **argv)
{
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
-
- if (--argc == 0) {
+ if (!*++argv) {
bb_show_usage();
}
do {
- argv++;
- if (realpath(*argv, resolved_path) != NULL) {
+ /* NOFORK: only one alloc is allowed; must free */
+ char *resolved_path = xmalloc_realpath(*argv);
+ if (resolved_path != NULL) {
puts(resolved_path);
+ free(resolved_path);
} else {
retval = EXIT_FAILURE;
bb_simple_perror_msg(*argv);
}
- } while (--argc);
-
-#if ENABLE_FEATURE_CLEAN_UP && resolved_path_MUST_FREE
- RELEASE_CONFIG_BUFFER(resolved_path);
-#endif
+ } while (*++argv);
fflush_stdout_and_exit(retval);
}