47 lines
2.7 KiB
C
47 lines
2.7 KiB
C
|
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
||
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
||
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
||
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
||
|
|
│ │
|
||
|
|
│ This program is free software; you can redistribute it and/or modify │
|
||
|
|
│ it under the terms of the GNU General Public License as published by │
|
||
|
|
│ the Free Software Foundation; version 2 of the License. │
|
||
|
|
│ │
|
||
|
|
│ This program is distributed in the hope that it will be useful, but │
|
||
|
|
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
|
||
|
|
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
|
||
|
|
│ General Public License for more details. │
|
||
|
|
│ │
|
||
|
|
│ You should have received a copy of the GNU General Public License │
|
||
|
|
│ along with this program; if not, write to the Free Software │
|
||
|
|
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
|
||
|
|
│ 02110-1301 USA │
|
||
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
||
|
|
#include "libc/calls/calls.h"
|
||
|
|
#include "libc/calls/internal.h"
|
||
|
|
#include "libc/dce.h"
|
||
|
|
#include "libc/sysv/consts/at.h"
|
||
|
|
#include "libc/sysv/errfuns.h"
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates symbolic link.
|
||
|
|
*
|
||
|
|
* This is like link() but adds a tiny indirection to make the fact that
|
||
|
|
* the file is a link obvious. It also enables certain other features,
|
||
|
|
* like the ability to be broken.
|
||
|
|
*
|
||
|
|
* @param target can be relative and needn't exist
|
||
|
|
* @param linkpath is what gets created
|
||
|
|
* @return 0 on success, or -1 w/ errno
|
||
|
|
* @note Windows NT only lets admins do this
|
||
|
|
* @asyncsignalsafe
|
||
|
|
*/
|
||
|
|
int symlink(const char *target, const char *linkpath) {
|
||
|
|
if (!target || !linkpath) return efault();
|
||
|
|
if (!IsWindows()) {
|
||
|
|
return symlinkat$sysv(target, AT_FDCWD, linkpath);
|
||
|
|
} else {
|
||
|
|
return symlink$nt(target, linkpath);
|
||
|
|
}
|
||
|
|
}
|