cosmopolitan/libc/sock/bind.c
Justine Tunney e557058ac8
Improve cosmo's conformance to libc-test
This change addresses various open source compatibility issues, so that
we pass 313/411 of the tests in https://github.com/jart/libc-test where
earlier today we were passing about 30/411 of them, due to header toil.
Please note that Glibc only passes 341/411 so 313 today is pretty good!

- Make the conformance of libc/isystem/ headers nearly perfect
- Import more of the remaining math library routines from Musl
- Fix inconsistencies with type signatures of calls like umask
- Write tests for getpriority/setpriority which work great now
- conform to `struct sockaddr *` on remaining socket functions
- Import a bunch of uninteresting stdlib functions e.g. rand48
- Introduce readdir_r, scandir, pthread_kill, sigsetjmp, etc..

Follow the instructions in our `tool/scripts/cosmocc` toolchain to run
these tests yourself. You use `make CC=cosmocc` on the test repository
2022-10-10 17:52:41 -07:00

61 lines
3.2 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/internal.h"
#include "libc/dce.h"
#include "libc/intrin/asan.internal.h"
#include "libc/intrin/strace.internal.h"
#include "libc/sock/internal.h"
#include "libc/sock/sock.h"
#include "libc/sock/struct/sockaddr.h"
#include "libc/sock/struct/sockaddr.internal.h"
#include "libc/sock/syscall_fd.internal.h"
#include "libc/sysv/errfuns.h"
/**
* Assigns local address and port number to socket, e.g.
*
* struct sockaddr_in in = {AF_INET, htons(12345), {htonl(0x7f000001)}};
* int fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
* bind(fd, &in, sizeof(in));
*
* @param fd is the file descriptor returned by socket()
* @param addr is usually the binary-encoded ip:port on which to listen
* @param addrsize is the byte-length of addr's true polymorphic form
* @return 0 on success or -1 w/ errno
* @error ENETDOWN, EPFNOSUPPORT, etc.
* @asyncsignalsafe
*/
int bind(int fd, const struct sockaddr *addr, uint32_t addrsize) {
int rc;
if (!addr || (IsAsan() && !__asan_is_valid(addr, addrsize))) {
rc = efault();
} else if (addrsize >= sizeof(struct sockaddr_in)) {
if (!IsWindows()) {
rc = sys_bind(fd, addr, addrsize);
} else if (__isfdkind(fd, kFdSocket)) {
rc = sys_bind_nt(&g_fds.p[fd], addr, addrsize);
} else {
rc = ebadf();
}
} else {
rc = einval();
}
STRACE("bind(%d, %s) -> %d% lm", fd, DescribeSockaddr(addr, addrsize), rc);
return rc;
}