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3858b122a6
This was made to support epoll on patched 2.4 kernels, and on early 2.6 using alternative libcs thanks to the arch-specific syscall definitions. All the features we support have been around since 2.6.2 and present in glibc since 2.3.2, neither of which are found in field anymore. Let's simply drop this and use epoll normally.
111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
/*
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* include/common/syscall.h
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* Redefinition of some missing OS-specific system calls.
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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_SYSCALL_H
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#define _COMMON_SYSCALL_H
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#ifdef __linux__
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#include <errno.h>
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#include <unistd.h>
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#include <sys/syscall.h>
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/* On Linux, _syscall macros were removed after 2.6.18, but we still prefer
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* them because syscall() is buggy on old libcs. If _syscall is not defined,
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* we're on a recent kernel with a recent libc and we should be safe, so we
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* emulate is using syscall().
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*/
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#ifndef _syscall1
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#define _syscall1(tr, nr, t1, n1) \
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tr nr(t1 n1) { \
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return syscall(__NR_##nr, n1); \
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}
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#endif
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#ifndef _syscall2
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#define _syscall2(tr, nr, t1, n1, t2, n2) \
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tr nr(t1 n1, t2 n2) { \
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return syscall(__NR_##nr, n1, n2); \
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}
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#endif
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#ifndef _syscall3
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#define _syscall3(tr, nr, t1, n1, t2, n2, t3, n3) \
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tr nr(t1 n1, t2 n2, t3 n3) { \
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return syscall(__NR_##nr, n1, n2, n3); \
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}
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#endif
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#ifndef _syscall4
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#define _syscall4(tr, nr, t1, n1, t2, n2, t3, n3, t4, n4) \
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tr nr(t1 n1, t2 n2, t3 n3, t4 n4) { \
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return syscall(__NR_##nr, n1, n2, n3, n4); \
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}
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#endif
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#ifndef _syscall5
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#define _syscall5(tr, nr, t1, n1, t2, n2, t3, n3, t4, n4, t5, n5) \
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tr nr(t1 n1, t2 n2, t3 n3, t4 n4, t5 n5) { \
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return syscall(__NR_##nr, n1, n2, n3, n4, n5); \
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}
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#endif
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#ifndef _syscall6
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#define _syscall6(tr, nr, t1, n1, t2, n2, t3, n3, t4, n4, t5, n5, t6, n6) \
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tr nr(t1 n1, t2 n2, t3 n3, t4 n4, t5 n5, t6 n6) { \
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return syscall(__NR_##nr, n1, n2, n3, n4, n5, n6); \
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}
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#endif
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/* Define some syscall numbers that are sometimes needed */
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/* splice is even more recent than epoll. It appeared around 2.6.18 but was
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* not in libc for a while.
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*/
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#ifndef __NR_splice
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#if defined(__powerpc__) || defined(__powerpc64__)
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#define __NR_splice 283
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#elif defined(__sparc__) || defined(__sparc64__)
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#define __NR_splice 232
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#elif defined(__x86_64__)
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#define __NR_splice 275
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#elif defined(__alpha__)
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#define __NR_splice 468
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#elif defined (__i386__)
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#define __NR_splice 313
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#elif defined(__s390__) || defined(__s390x__)
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#define __NR_splace 306
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#endif /* $arch */
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#endif /* __NR_splice */
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#endif /* __linux__ */
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#endif /* _COMMON_SYSCALL_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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