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