mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
eeb20775d2
This will help C++ code that uses exceptions to be tinier. For example, this change shaves away 1000 lines of assembly code from LLVM's libcxx, which is 0.7% of all assembly instructions in the entire library.
45 lines
2.8 KiB
C
45 lines
2.8 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│ vi: set et 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/sysv/consts/at.h"
|
|
#include "libc/temp.h"
|
|
|
|
/**
|
|
* Creates temporary file name and file descriptor, e.g.
|
|
*
|
|
* char path[] = "/tmp/foo.XXXXXX.txt";
|
|
* int fd = mkstemps(path, 4);
|
|
* printf("%s is opened as %d\n", path, fd);
|
|
*
|
|
* @param template is mutated to replace last six X's with rng
|
|
* @param suffixlen may be nonzero to permit characters after the "XXXXXX"
|
|
* @return open file descriptor r + w exclusive or -1 w/ errno
|
|
* @raise EINVAL if `template` (less the `suffixlen` region) didn't
|
|
* end with the string "XXXXXXX"
|
|
* @see mkostemp() if you you need a `O_CLOEXEC`, `O_APPEND`, etc.
|
|
* @see openatemp() for one temp roller to rule them all
|
|
* @see mkstemp() if you don't need `suffixlen`
|
|
* @see mktemp() if you don't need an fd
|
|
* @see tmpfd() if you don't need a path
|
|
* @cancelationpoint
|
|
*/
|
|
int mkstemps(char *template, int suffixlen) {
|
|
return openatemp(AT_FDCWD, template, suffixlen, 0, 0);
|
|
}
|
|
|
|
__weak_reference(mkstemps, mkstemps64);
|