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/* vi: set sw=4 ts=4: */
/*
* Mini readlink implementation for busybox
*
* Copyright (C) 2000,2001 Matt Kraai <kraai@alumni.carnegiemellon.edu>
*
* Licensed under GPL v2 or later, see file LICENSE in this tarball for details.
*/
#include "busybox.h"
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <getopt.h>
int readlink_main(int argc, char **argv);
int readlink_main(int argc, char **argv)
{
char *buf;
char *fname;
USE_FEATURE_READLINK_FOLLOW(
unsigned opt;
/* We need exactly one non-option argument. */
opt_complementary = "=1";
opt = getopt32(argc, argv, "f");
fname = argv[optind];
)
SKIP_FEATURE_READLINK_FOLLOW(
const unsigned opt = 0;
if (argc != 2) bb_show_usage();
fname = argv[1];
)
/* compat: coreutils readlink reports errors silently via exit code */
logmode = LOGMODE_NONE;
if (opt) {
buf = realpath(fname, bb_common_bufsiz1);
} else {
buf = xreadlink(fname);
}
if (!buf)
return EXIT_FAILURE;
puts(buf);
if (ENABLE_FEATURE_CLEAN_UP && buf != bb_common_bufsiz1)
free(buf);
fflush_stdout_and_exit(EXIT_SUCCESS);
}
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