mirror of
https://github.com/sheumann/hush.git
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d921b2ecc0
things like xasprintf() into xfuncs.c, remove xprint_file_by_name() (it only had one user), clean up lots of #includes... General cleanup pass. What I've been doing for the last couple days. And it conflicts! I've removed httpd.c from this checkin due to somebody else touching that file. It builds for me. I have to catch a bus. (Now you know why I'm looking forward to Mercurial.)
102 lines
2.1 KiB
C
102 lines
2.1 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini ln implementation for busybox
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*
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* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*/
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/* BB_AUDIT SUSv3 compliant */
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/* BB_AUDIT GNU options missing: -d, -F, -i, and -v. */
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/* http://www.opengroup.org/onlinepubs/007904975/utilities/ln.html */
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#include "busybox.h"
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#define LN_SYMLINK 1
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#define LN_FORCE 2
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#define LN_NODEREFERENCE 4
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#define LN_BACKUP 8
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#define LN_SUFFIX 16
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int ln_main(int argc, char **argv)
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{
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int status = EXIT_SUCCESS;
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int flag;
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char *last;
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char *src_name;
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char *src;
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char *suffix = "~";
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struct stat statbuf;
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int (*link_func)(const char *, const char *);
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flag = bb_getopt_ulflags(argc, argv, "sfnbS:", &suffix);
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if (argc == optind) {
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bb_show_usage();
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}
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last = argv[argc - 1];
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argv += optind;
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if (argc == optind + 1) {
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*--argv = last;
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last = bb_get_last_path_component(xstrdup(last));
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}
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do {
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src_name = NULL;
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src = last;
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if (is_directory(src,
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(flag & LN_NODEREFERENCE) ^ LN_NODEREFERENCE,
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NULL)) {
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src_name = xstrdup(*argv);
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src = concat_path_file(src, bb_get_last_path_component(src_name));
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free(src_name);
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src_name = src;
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}
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if (!(flag & LN_SYMLINK) && stat(*argv, &statbuf)) {
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bb_perror_msg("%s", *argv);
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status = EXIT_FAILURE;
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free(src_name);
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continue;
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}
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if (flag & LN_BACKUP) {
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char *backup;
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backup = xasprintf("%s%s", src, suffix);
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if (rename(src, backup) < 0 && errno != ENOENT) {
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bb_perror_msg("%s", src);
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status = EXIT_FAILURE;
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free(backup);
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continue;
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}
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free(backup);
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/*
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* When the source and dest are both hard links to the same
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* inode, a rename may succeed even though nothing happened.
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* Therefore, always unlink().
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*/
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unlink(src);
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} else if (flag & LN_FORCE) {
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unlink(src);
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}
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link_func = link;
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if (flag & LN_SYMLINK) {
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link_func = symlink;
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}
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if (link_func(*argv, src) != 0) {
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bb_perror_msg("%s", src);
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status = EXIT_FAILURE;
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}
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free(src_name);
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} while ((++argv)[1]);
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return status;
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}
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