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authorDenis Vlasenko2006-10-20 18:36:55 +0000
committerDenis Vlasenko2006-10-20 18:36:55 +0000
commit456fa6c0b17b2ff465a34db031f667b3fcd4bf2e (patch)
treec33b80a72a22047d49243ea6307de8e19d3a98e2 /debianutils/readlink.c
parentdf5189269074042a60fa87425ef8a01a9aaa4af6 (diff)
downloadbusybox-456fa6c0b17b2ff465a34db031f667b3fcd4bf2e.zip
busybox-456fa6c0b17b2ff465a34db031f667b3fcd4bf2e.tar.gz
readlink: do not emit errors if file doesnt not exist / not a link
getopt32: add =N support
Diffstat (limited to 'debianutils/readlink.c')
-rw-r--r--debianutils/readlink.c37
1 files changed, 24 insertions, 13 deletions
diff --git a/debianutils/readlink.c b/debianutils/readlink.c
index 0d5ad94..9536d32 100644
--- a/debianutils/readlink.c
+++ b/debianutils/readlink.c
@@ -13,21 +13,32 @@
#include <stdlib.h>
#include <getopt.h>
-#define READLINK_FLAG_f (1 << 0)
-
int readlink_main(int argc, char **argv)
{
char *buf;
- unsigned opt = ENABLE_FEATURE_READLINK_FOLLOW ?
- getopt32(argc, argv, "f") : 0;
-
- if (argc != (ENABLE_FEATURE_READLINK_FOLLOW ? optind + 1 : 2))
- bb_show_usage();
-
- if (opt & READLINK_FLAG_f)
- buf = realpath(argv[optind], bb_common_bufsiz1);
- else
- buf = xreadlink(argv[ENABLE_FEATURE_READLINK_FOLLOW ? optind : 1]);
+ 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;
@@ -36,5 +47,5 @@ int readlink_main(int argc, char **argv)
if (ENABLE_FEATURE_CLEAN_UP && buf != bb_common_bufsiz1)
free(buf);
- return EXIT_SUCCESS;
+ bb_fflush_stdout_and_exit(EXIT_SUCCESS);
}