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cefad67689
Trying to build with an old gcc and glibc revealed that we must not state "inline" in our _syscall* definitions since it's already present in the declaration making use of the _syscall* macros.
73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
/*
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* include/common/accept4.h
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* Definition of the accept4 system call for older Linux libc.
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*
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* Copyright 2000-2012 Willy Tarreau <w@1wt.eu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifndef _COMMON_ACCEPT4_H
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#define _COMMON_ACCEPT4_H
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#if defined (__linux__) && defined(USE_ACCEPT4)
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/syscall.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <common/syscall.h>
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/* On recent Linux kernels, the accept4() syscall may be used to avoid an fcntl()
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* call to set O_NONBLOCK on the resulting socket. It was introduced in Linux
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* 2.6.28 and is not present in older libcs.
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*/
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#ifndef SOCK_NONBLOCK
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#define SOCK_NONBLOCK O_NONBLOCK
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#endif
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#if defined(USE_MY_ACCEPT4) || (!defined(SYS_ACCEPT4) && !defined(__NR_accept4))
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#if defined(CONFIG_HAP_LINUX_VSYSCALL) && defined(__linux__) && defined(__i386__)
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/* The syscall is redefined somewhere else */
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extern int accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags);
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#elif ACCEPT4_USE_SOCKETCALL
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static inline _syscall2(int, socketcall, int, call, unsigned long *, args);
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static int accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags)
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{
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unsigned long args[4];
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args[0] = (unsigned long)sockfd;
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args[1] = (unsigned long)addr;
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args[2] = (unsigned long)addrlen;
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args[3] = (unsigned long)flags;
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return socketcall(SYS_ACCEPT4, args);
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}
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#else
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static inline _syscall4(int, accept4, int, sockfd, struct sockaddr *, addr, socklen_t *, addrlen, int, flags);
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#endif /* VSYSCALL etc... */
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#endif /* USE_MY_ACCEPT4 */
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#endif /* __linux__ && USE_ACCEPT4 */
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#endif /* _COMMON_ACCEPT4_H */
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/*
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* Local variables:
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* c-indent-level: 8
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* c-basic-offset: 8
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* End:
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*/
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