mirror of
https://github.com/jart/cosmopolitan.git
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933411ba99
- Fix bugs in kDos2Errno definition - malloc() should now be thread safe - Fix bug in rollup.com header generator - Fix open(O_APPEND) on the New Technology - Fix select() on the New Technology and test it - Work towards refactoring i/o for thread safety - Socket reads and writes on NT now poll for signals - Work towards i/o completion ports on the New Technology - Make read() and write() intermittently check for signals - Blinkenlights keyboard i/o so much better on NT w/ poll() - You can now poll() files and sockets at the same time on NT - Fix bug in appendr() that manifests with dlmalloc footers off
54 lines
3 KiB
C
54 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/sock/internal.h"
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#include "libc/sock/sock.h"
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#include "libc/sysv/errfuns.h"
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/**
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* Retrieves socket setting.
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*
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* @param level can be SOL_SOCKET, IPPROTO_TCP, etc.
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* @param optname can be SO_{REUSE{PORT,ADDR},KEEPALIVE,etc.} etc.
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* @return 0 on success, or -1 w/ errno
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* @error ENOPROTOOPT for unknown (level,optname)
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* @see libc/sysv/consts.sh for tuning catalogue
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* @see setsockopt()
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*/
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int getsockopt(int fd, int level, int optname, void *out_opt_optval,
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uint32_t *out_optlen) {
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int rc;
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if (!level || !optname) {
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rc = enoprotoopt(); /* our sysvconsts definition */
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} else if (optname == -1) {
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rc = 0; /* our sysvconsts definition */
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} else if (!IsWindows()) {
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rc = sys_getsockopt(fd, level, optname, out_opt_optval, out_optlen);
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} else if (__isfdkind(fd, kFdSocket)) {
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rc = sys_getsockopt_nt(&g_fds.p[fd], level, optname, out_opt_optval,
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out_optlen);
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} else {
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rc = ebadf();
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}
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STRACE("getsockopt(%d, %#x, %#x, %p, %p) → %d% lm", fd, level, optname,
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out_opt_optval, out_optlen, rc);
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return rc;
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}
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