mirror of
https://github.com/jart/cosmopolitan.git
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63 lines
3.1 KiB
C
63 lines
3.1 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/calls/syscall-sysv.internal.h"
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#include "libc/dce.h"
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#include "libc/errno.h"
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#include "libc/intrin/strace.h"
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#include "libc/sysv/consts/at.h"
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#include "libc/sysv/consts/s.h"
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#include "libc/sysv/errfuns.h"
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/**
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* Creates filesystem inode.
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*
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* @param mode is octal mode, e.g. 0600; needs to be or'd with one of:
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* S_IFDIR: directory
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* S_IFIFO: named pipe
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* S_IFREG: regular file
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* S_IFSOCK: named socket
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* S_IFBLK: block device (root has authorization)
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* S_IFCHR: character device (root has authorization)
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* @param dev it's complicated
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* @return 0 on success, or -1 w/ errno
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* @asyncsignalsafe
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*/
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int mknod(const char *path, uint32_t mode, uint64_t dev) {
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int e, rc;
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if (mode & S_IFREG)
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return creat(path, mode & ~S_IFREG);
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if (mode & S_IFDIR)
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return mkdir(path, mode & ~S_IFDIR);
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if (mode & S_IFIFO)
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return enosys(); // no named pipes!
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if (!IsWindows()) {
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// TODO(jart): Whys there code out there w/ S_xxx passed via dev?
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e = errno;
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rc = sys_mknod(path, mode, dev);
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if (rc == -1 && rc == ENOSYS) {
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errno = e;
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rc = sys_mknodat(AT_FDCWD, path, mode, dev);
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}
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} else {
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rc = enosys();
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}
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STRACE("mknod(%#s, %#o, %#lx) → %d% m", path, mode, dev, rc);
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return rc;
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}
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