36 lines
2.4 KiB
C
36 lines
2.4 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/calls/struct/iovec.h"
|
|
#include "libc/sock/sock.h"
|
|
|
|
/**
|
|
* Writes data to file descriptor.
|
|
*
|
|
* @param fd is something open()'d earlier
|
|
* @param buf is copied from, cf. copy_file_range(), sendfile(), etc.
|
|
* @param size in range [1..0x7ffff000] is reasonable
|
|
* @return [1..size] bytes on success, or -1 w/ errno; noting zero is
|
|
* impossible unless size was passed as zero to do an error check
|
|
* @see read(), pwrite(), writev(), SIGPIPE
|
|
* @asyncsignalsafe
|
|
*/
|
|
ssize_t write(int fd, const void *buf, size_t size) {
|
|
return writev(fd, &(struct iovec){buf, size}, 1);
|
|
}
|