mirror of
https://github.com/jart/cosmopolitan.git
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106 lines
4 KiB
C
106 lines
4 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/state.internal.h"
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#include "libc/calls/syscall_support-nt.internal.h"
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#include "libc/nt/createfile.h"
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#include "libc/nt/enum/accessmask.h"
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#include "libc/nt/enum/creationdisposition.h"
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#include "libc/nt/enum/fileflagandattributes.h"
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#include "libc/nt/ipc.h"
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#include "libc/nt/runtime.h"
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#include "libc/sock/internal.h"
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#include "libc/sysv/consts/af.h"
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#include "libc/sysv/consts/o.h"
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#include "libc/sysv/consts/sock.h"
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#include "libc/sysv/errfuns.h"
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textwindows int sys_socketpair_nt(int family, int type, int proto, int sv[2]) {
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uint32_t mode;
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char16_t pipename[64];
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int64_t hpipe, h1, h2;
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int rc, reader, writer, oflags;
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// Supports only AF_UNIX
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if (family != AF_UNIX) {
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return eafnosupport();
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}
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oflags = 0;
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if (type & SOCK_CLOEXEC) oflags |= O_CLOEXEC;
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type &= ~SOCK_CLOEXEC;
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if (type == SOCK_STREAM) {
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mode = kNtPipeTypeByte | kNtPipeReadmodeByte;
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} else if ((type == SOCK_DGRAM) || (type == SOCK_SEQPACKET)) {
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mode = kNtPipeTypeMessage | kNtPipeReadmodeMessage;
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} else {
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return eopnotsupp();
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}
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CreatePipeName(pipename);
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__fds_lock();
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reader = __reservefd_unlocked(-1);
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writer = __reservefd_unlocked(-1);
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__fds_unlock();
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if (reader == -1 || writer == -1) {
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if (reader != -1) __releasefd(reader);
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if (writer != -1) __releasefd(writer);
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return -1;
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}
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if ((hpipe = CreateNamedPipe(
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pipename, kNtPipeAccessDuplex | kNtFileFlagOverlapped, mode, 1,
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65536, 65536, 0, &kNtIsInheritable)) == -1) {
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__releasefd(writer);
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__releasefd(reader);
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return -1;
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}
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h1 = CreateFile(pipename, kNtGenericWrite | kNtGenericRead, 0,
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&kNtIsInheritable, kNtOpenExisting, kNtFileFlagOverlapped, 0);
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__fds_lock();
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if (h1 != -1) {
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g_fds.p[reader].kind = kFdFile;
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g_fds.p[reader].flags = oflags;
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g_fds.p[reader].mode = 0140444;
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g_fds.p[reader].handle = hpipe;
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g_fds.p[writer].kind = kFdFile;
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g_fds.p[writer].flags = oflags;
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g_fds.p[writer].mode = 0140222;
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g_fds.p[writer].handle = h1;
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sv[0] = reader;
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sv[1] = writer;
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rc = 0;
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} else {
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CloseHandle(hpipe);
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__releasefd_unlocked(writer);
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__releasefd_unlocked(reader);
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rc = -1;
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}
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__fds_unlock();
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return rc;
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}
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