diff options
Diffstat (limited to 'toys/posix/ln.c')
| -rw-r--r-- | toys/posix/ln.c | 27 |
1 files changed, 18 insertions, 9 deletions
diff --git a/toys/posix/ln.c b/toys/posix/ln.c index 306f0cac..3cd5c7b8 100644 --- a/toys/posix/ln.c +++ b/toys/posix/ln.c @@ -4,7 +4,7 @@ * * See http://opengroup.org/onlinepubs/9699919799/utilities/ln.html -USE_LN(NEWTOY(ln, "<1t:Tvnfs", TOYFLAG_BIN)) +USE_LN(NEWTOY(ln, "<1rt:Tvnfs", TOYFLAG_BIN)) config LN bool "ln" @@ -18,6 +18,7 @@ config LN -s Create a symbolic link -f Force the creation of the link, even if TO already exists -n Symlink at TO treated as file + -r Create relative symlink from -> to -t Create links in DIR -T TO always treated as file, max 2 arguments -v Verbose @@ -34,30 +35,37 @@ void ln_main(void) { char *dest = TT.t ? TT.t : toys.optargs[--toys.optc], *new; struct stat buf; - int i; + int i, rc; + + if (FLAG(T) && toys.optc>1) help_exit("Max 2 arguments"); // With one argument, create link in current directory. if (!toys.optc) { toys.optc++; - dest="."; + dest = "."; } - if (FLAG(T) && toys.optc>1) help_exit("Max 2 arguments"); // Is destination a directory? if (!((FLAG(n)||FLAG(T)) ? lstat : stat)(dest, &buf)) { - i = S_ISDIR(buf.st_mode); - - if ((FLAG(T) && i) || (!i && (toys.optc>1 || TT.t))) + if ((i = S_ISDIR(buf.st_mode)) ? FLAG(T) : (toys.optc>1 || TT.t)) error_exit("'%s' %s a directory", dest, i ? "is" : "not"); } else buf.st_mode = 0; for (i=0; i<toys.optc; i++) { - int rc; - char *oldnew, *try = toys.optargs[i]; + char *oldnew = 0, *try = toys.optargs[i]; if (S_ISDIR(buf.st_mode)) new = xmprintf("%s/%s", dest, basename(try)); else new = dest; + if (FLAG(r)) { + try = relative_path(new, try); + if (!try) { + if (new != dest) free(new); + continue; + } + toys.optflags |= FLAG_s; + } + // Force needs to unlink the existing target (if any). Do that by creating // a temp version and renaming it over the old one, so we can retain the // old file in cases we can't replace it (such as hardlink between mounts). @@ -88,6 +96,7 @@ void ln_main(void) FLAG(s) ? "symbolic" : "hard", try, new); else if (FLAG(v)) fprintf(stderr, "'%s' -> '%s'\n", new, try); + if (try != toys.optargs[i]) free(try); if (new != dest) free(new); } } |