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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.
46 lines
2.8 KiB
C
46 lines
2.8 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/sysv/consts/at.h"
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#include "libc/temp.h"
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/**
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* Creates temporary file name and file descriptor, e.g.
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*
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* char path[] = "/tmp/foo.XXXXXX.txt";
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* int fd = mkstemps(path, 4);
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* printf("%s is opened as %d\n", path, fd);
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*
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* @param template is mutated to replace last six X's with rng
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* @param suffixlen may be nonzero to permit characters after the "XXXXXX"
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* @return open file descriptor r + w exclusive or -1 w/ errno
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* @raise EINVAL if `template` (less the `suffixlen` region) didn't
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* end with the string "XXXXXXX"
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* @see mkostemp() if you you need a `O_CLOEXEC`, `O_APPEND`, etc.
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* @see openatemp() for one temp roller to rule them all
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* @see mkstemp() if you don't need `suffixlen`
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* @see mktemp() if you don't need an fd
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* @see tmpfd() if you don't need a path
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* @cancelationpoint
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*/
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int mkstemps(char *template, int suffixlen) {
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return openatemp(AT_FDCWD, template, suffixlen, 0, 0);
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}
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__weak_reference(mkstemps, mkstemps64);
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