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cp: add support for -s, -l. Fix free(nonmalloc) bug.

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Add doc on POSIX's rules on -i and -f (insane!).
ln: make "ln dangling_symlink new_link" work.
This commit is contained in:
Denis Vlasenko 2006-10-21 23:40:20 +00:00
parent 8d73c35916
commit f24e1f40e0
6 changed files with 190 additions and 161 deletions
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43
coreutils/ln.c
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@ -49,36 +49,39 @@ int ln_main(int argc, char **argv)
src = last;
if (is_directory(src,
(flag & LN_NODEREFERENCE) ^ LN_NODEREFERENCE,
NULL)) {
(flag & LN_NODEREFERENCE) ^ LN_NODEREFERENCE,
NULL)) {
src_name = xstrdup(*argv);
src = concat_path_file(src, bb_get_last_path_component(src_name));
free(src_name);
src_name = src;
}
if (!(flag & LN_SYMLINK) && stat(*argv, &statbuf)) {
bb_perror_msg("%s", *argv);
status = EXIT_FAILURE;
free(src_name);
continue;
// coreutils: "ln dangling_symlink new_hardlink" works
if (lstat(*argv, &statbuf) || !S_ISLNK(statbuf.st_mode)) {
bb_perror_msg("%s", *argv);
status = EXIT_FAILURE;
free(src_name);
continue;
}
}
if (flag & LN_BACKUP) {
char *backup;
backup = xasprintf("%s%s", src, suffix);
if (rename(src, backup) < 0 && errno != ENOENT) {
bb_perror_msg("%s", src);
status = EXIT_FAILURE;
free(backup);
continue;
}
char *backup;
backup = xasprintf("%s%s", src, suffix);
if (rename(src, backup) < 0 && errno != ENOENT) {
bb_perror_msg("%s", src);
status = EXIT_FAILURE;
free(backup);
/*
* When the source and dest are both hard links to the same
* inode, a rename may succeed even though nothing happened.
* Therefore, always unlink().
*/
unlink(src);
continue;
}
free(backup);
/*
* When the source and dest are both hard links to the same
* inode, a rename may succeed even though nothing happened.
* Therefore, always unlink().
*/
unlink(src);
} else if (flag & LN_FORCE) {
unlink(src);
}