48 lines
2.6 KiB
C
48 lines
2.6 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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#define __NR_accept4_linux 0x0120 /* rhel5:enosysevil */
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int accept4$sysv(int server, void *addr, uint32_t *addrsize, int flags) {
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static bool once, demodernize;
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int olderr, client;
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if (!flags || demodernize) goto TriedAndTrue;
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olderr = errno;
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client = __accept4$sysv(server, addr, addrsize, flags);
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if (client == -1 && errno == ENOSYS) {
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errno = olderr;
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TriedAndTrue:
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client = fixupnewsockfd$sysv(__accept$sysv(server, addr, addrsize), flags);
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} else if (SupportsLinux() && !once) {
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once = true;
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if (client == __NR_accept4_linux) {
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demodernize = true;
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goto TriedAndTrue;
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}
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}
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if (client != -1 && IsBsd()) {
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sockaddr2linux(addr);
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}
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return client;
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}
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