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-rw-r--r--coreutils/readlink.c33
1 files changed, 28 insertions, 5 deletions
diff --git a/coreutils/readlink.c b/coreutils/readlink.c
index 721fd8597..bcf352e74 100644
--- a/coreutils/readlink.c
+++ b/coreutils/readlink.c
@@ -6,9 +6,31 @@
6 * 6 *
7 * Licensed under GPL v2 or later, see file LICENSE in this tarball for details. 7 * Licensed under GPL v2 or later, see file LICENSE in this tarball for details.
8 */ 8 */
9
10#include "libbb.h" 9#include "libbb.h"
11 10
11/*
12 * # readlink --version
13 * readlink (GNU coreutils) 6.10
14 * # readlink --help
15 * -f, --canonicalize
16 * canonicalize by following every symlink in
17 * every component of the given name recursively;
18 * all but the last component must exist
19 * -e, --canonicalize-existing
20 * canonicalize by following every symlink in
21 * every component of the given name recursively,
22 * all components must exist
23 * -m, --canonicalize-missing
24 * canonicalize by following every symlink in
25 * every component of the given name recursively,
26 * without requirements on components existence
27 * -n, --no-newline do not output the trailing newline
28 * -q, --quiet, -s, --silent suppress most error messages
29 * -v, --verbose report error messages
30 *
31 * bbox supports: -f -n -v (fully), -q -s (accepts but ignores)
32 */
33
12int readlink_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; 34int readlink_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
13int readlink_main(int argc UNUSED_PARAM, char **argv) 35int readlink_main(int argc UNUSED_PARAM, char **argv)
14{ 36{
@@ -20,7 +42,7 @@ int readlink_main(int argc UNUSED_PARAM, char **argv)
20 unsigned opt; 42 unsigned opt;
21 /* We need exactly one non-option argument. */ 43 /* We need exactly one non-option argument. */
22 opt_complementary = "=1"; 44 opt_complementary = "=1";
23 opt = getopt32(argv, "f"); 45 opt = getopt32(argv, "fnvsq");
24 fname = argv[optind]; 46 fname = argv[optind];
25 ) 47 )
26 SKIP_FEATURE_READLINK_FOLLOW( 48 SKIP_FEATURE_READLINK_FOLLOW(
@@ -30,9 +52,10 @@ int readlink_main(int argc UNUSED_PARAM, char **argv)
30 ) 52 )
31 53
32 /* compat: coreutils readlink reports errors silently via exit code */ 54 /* compat: coreutils readlink reports errors silently via exit code */
33 logmode = LOGMODE_NONE; 55 if (!(opt & 4)) /* not -v */
56 logmode = LOGMODE_NONE;
34 57
35 if (opt) { 58 if (opt & 1) { /* -f */
36 buf = realpath(fname, pathbuf); 59 buf = realpath(fname, pathbuf);
37 } else { 60 } else {
38 buf = xmalloc_readlink_or_warn(fname); 61 buf = xmalloc_readlink_or_warn(fname);
@@ -40,7 +63,7 @@ int readlink_main(int argc UNUSED_PARAM, char **argv)
40 63
41 if (!buf) 64 if (!buf)
42 return EXIT_FAILURE; 65 return EXIT_FAILURE;
43 puts(buf); 66 printf((opt & 2) ? "%s" : "%s\n", buf);
44 67
45 if (ENABLE_FEATURE_CLEAN_UP && !opt) 68 if (ENABLE_FEATURE_CLEAN_UP && !opt)
46 free(buf); 69 free(buf);