mirror of
https://github.com/jart/cosmopolitan.git
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47 lines
2.7 KiB
C
47 lines
2.7 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/dce.h"
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#include "libc/errno.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/struct/sockaddr.internal.h"
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int sys_accept4(int server, void *addr, uint32_t *addrsize, int flags) {
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if (!flags) return sys_accept(server, addr, addrsize);
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int olderr, client;
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union sockaddr_storage_bsd bsd;
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uint32_t size = sizeof(bsd);
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void *out_addr = !IsBsd() ? addr : &bsd;
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uint32_t *out_addrsize = !IsBsd() ? addrsize : &size;
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static bool demodernize;
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if (demodernize) goto TriedAndTrue;
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olderr = errno;
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client = __sys_accept4(server, out_addr, out_addrsize, flags);
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if (client == -1 && errno == ENOSYS) {
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errno = olderr;
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demodernize = true;
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TriedAndTrue:
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client = __fixupnewsockfd(__sys_accept(server, out_addr, out_addrsize, 0),
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flags);
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}
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if (client != -1 && IsBsd()) {
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sockaddr2linux(&bsd, size, addr, addrsize);
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}
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return client;
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}
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