mirror of
https://github.com/jart/cosmopolitan.git
synced 2024-05-17 02:52:40 +00:00
68c7c9c1e0
- Use good ELF technique in cosmo_dlopen() - Make strerror() conform more to other libc impls - Introduce __clear_cache() and use it in cosmo_dlopen() - Remove libc/fmt/fmt.h header (trying to kill off LIBC_FMT)
77 lines
3 KiB
C
77 lines
3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=8 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/struct/iovec.internal.h"
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#include "libc/dce.h"
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#include "libc/fmt/internal.h"
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#include "libc/limits.h"
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#include "libc/macros.internal.h"
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#include "libc/nt/files.h"
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#include "libc/sock/sock.h"
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#include "libc/str/str.h"
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#include "libc/sysv/errfuns.h"
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struct VdprintfState {
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int n, t, fd;
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char b[1024];
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};
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static int vdprintf_putc(const char *s, struct VdprintfState *t, size_t n) {
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struct iovec iov[2];
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if (n) {
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if (t->n + n < sizeof(t->b)) {
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memcpy(t->b + t->n, s, n);
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t->n += n;
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} else {
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iov[0].iov_base = t->b;
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iov[0].iov_len = t->n;
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iov[1].iov_base = (void *)s;
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iov[1].iov_len = n;
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if (__robust_writev(t->fd, iov, 2) == -1) {
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return -1;
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}
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t->t += t->n;
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t->n = 0;
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}
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}
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return 0;
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}
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/**
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* Formats string directly to system i/o device.
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* @asyncsignalsafe
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* @vforksafe
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*/
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int vdprintf(int fd, const char *fmt, va_list va) {
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struct iovec iov[1];
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struct VdprintfState t;
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t.n = 0;
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t.t = 0;
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t.fd = fd;
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if (__fmt(vdprintf_putc, &t, fmt, va) == -1) return -1;
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if (t.n) {
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iov[0].iov_base = t.b;
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iov[0].iov_len = t.n;
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if (__robust_writev(t.fd, iov, 1) == -1) {
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return -1;
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}
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t.t += t.n;
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}
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return t.t;
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}
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