mirror of
https://github.com/jart/cosmopolitan.git
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56 lines
3 KiB
C
56 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=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/internal.h"
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#include "libc/calls/strace.internal.h"
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#include "libc/dce.h"
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#include "libc/intrin/asan.internal.h"
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#include "libc/sock/internal.h"
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#include "libc/sock/sock.h"
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#include "libc/sock/sockdebug.h"
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#include "libc/sock/syscall_fd.internal.h"
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#include "libc/sysv/errfuns.h"
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/**
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* Assigns local address and port number to socket.
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*
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* @param fd is the file descriptor returned by socket()
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* @param addr is usually the binary-encoded ip:port on which to listen
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* @param addrsize is the byte-length of addr's true polymorphic form
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* @return 0 on success or -1 w/ errno
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* @error ENETDOWN, EPFNOSUPPORT, etc.
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* @asyncsignalsafe
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*/
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int bind(int fd, const void *addr, uint32_t addrsize) {
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int rc;
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if (!addr || (IsAsan() && !__asan_is_valid(addr, addrsize))) {
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rc = efault();
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} else if (addrsize >= sizeof(struct sockaddr_in)) {
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if (!IsWindows()) {
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rc = sys_bind(fd, addr, addrsize);
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} else if (__isfdkind(fd, kFdSocket)) {
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rc = sys_bind_nt(&g_fds.p[fd], addr, addrsize);
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} else {
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rc = ebadf();
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}
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} else {
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rc = einval();
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}
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STRACE("bind(%d, %s) -> %d% lm", fd, __describe_sockaddr(addr, addrsize), rc);
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return rc;
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}
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