mirror of
https://github.com/jart/cosmopolitan.git
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84 lines
4 KiB
C
84 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 et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2023 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/sig.internal.h"
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#include "libc/calls/struct/iovec.h"
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#include "libc/calls/struct/sigset.internal.h"
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#include "libc/errno.h"
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#include "libc/intrin/fds.h"
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#include "libc/nt/errors.h"
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#include "libc/nt/struct/iovec.h"
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#include "libc/nt/winsock.h"
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#include "libc/sock/internal.h"
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#include "libc/sock/syscall_fd.internal.h"
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#include "libc/sysv/consts/o.h"
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#include "libc/sysv/consts/sicode.h"
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#include "libc/sysv/consts/sig.h"
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#include "libc/sysv/errfuns.h"
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#ifdef __x86_64__
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#define _MSG_OOB 1
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#define _MSG_DONTROUTE 4
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#define _MSG_DONTWAIT 64
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#define _MSG_NOSIGNAL 0x10000000
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struct SendToArgs {
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const struct iovec *iov;
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size_t iovlen;
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void *opt_in_addr;
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uint32_t in_addrsize;
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struct NtIovec iovnt[16];
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};
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static textwindows int sys_sendto_nt_start(int64_t handle,
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struct NtOverlapped *overlap,
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uint32_t *flags, void *arg) {
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struct SendToArgs *args = arg;
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return WSASendTo(handle, args->iovnt,
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__iovec2nt(args->iovnt, args->iov, args->iovlen), 0, *flags,
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args->opt_in_addr, args->in_addrsize, overlap, 0);
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}
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textwindows ssize_t sys_sendto_nt(int fd, const struct iovec *iov,
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size_t iovlen, uint32_t flags,
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void *opt_in_addr, uint32_t in_addrsize) {
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if (flags & ~(_MSG_DONTWAIT | _MSG_OOB | _MSG_DONTROUTE | _MSG_NOSIGNAL))
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return einval();
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ssize_t rc;
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struct Fd *f = g_fds.p + fd;
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sigset_t waitmask = __sig_block();
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rc = __winsock_block(f->handle, flags & ~(_MSG_DONTWAIT | _MSG_NOSIGNAL),
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false, f->sndtimeo, waitmask, sys_sendto_nt_start,
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&(struct SendToArgs){iov, iovlen, //
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opt_in_addr, in_addrsize});
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__sig_unblock(waitmask);
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if (rc == -1 && (errno == WSAESHUTDOWN || // ESHUTDOWN
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errno == WSAECONNABORTED)) { // ECONNABORTED
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errno = kNtErrorBrokenPipe; // EPIPE
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if (!(flags & _MSG_NOSIGNAL))
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__sig_raise(SIGPIPE, SI_KERNEL);
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}
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return rc;
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}
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#endif /* __x86_64__ */
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