cosmopolitan/libc/calls/mknod.c

50 lines
2.8 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 │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/dce.h"
#include "libc/calls/internal.h"
#include "libc/calls/calls.h"
#include "libc/sysv/errfuns.h"
#include "libc/sysv/consts/s.h"
/**
* Creates filesystem inode.
*
* @param mode is octal mode, e.g. 0600; needs to be or'd with one of:
* S_IFDIR: directory
* S_IFIFO: named pipe
* S_IFREG: regular file
* S_IFSOCK: named socket
* S_IFBLK: block device (root has authorization)
* S_IFCHR: character device (root has authorization)
* @param dev it's complicated
* @return 0 on success, or -1 w/ errno
* @asyncsignalsafe
*/
int mknod(const char *path, uint32_t mode, uint64_t dev) {
if (mode & S_IFREG) return creat(path, mode & ~S_IFREG);
if (mode & S_IFDIR) return mkdir(path, mode & ~S_IFDIR);
if (mode & S_IFIFO) return mkfifo(path, mode & ~S_IFIFO);
if (!IsWindows()) {
/* TODO(jart): Whys there code out there w/ S_xxx passed via dev? */
return mknod$sysv(path, mode, dev);
} else {
return enosys();
}
}