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/*
* include/common/syscall.h
* Redefinition of some missing OS-specific system calls.
*
* Copyright 2000-2012 Willy Tarreau <w@1wt.eu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, version 2.1
* exclusively.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef _COMMON_SYSCALL_H
#define _COMMON_SYSCALL_H
#ifdef __linux__
#include <errno.h>
#include <unistd.h>
#include <sys/syscall.h>
/* On Linux, _syscall macros were removed after 2.6.18, but we still prefer
* them because syscall() is buggy on old libcs. If _syscall is not defined,
* we're on a recent kernel with a recent libc and we should be safe, so we
* emulate is using syscall().
*/
#ifndef _syscall1
#define _syscall1(tr, nr, t1, n1) \
tr nr(t1 n1) { \
return syscall(__NR_##nr, n1); \
}
#endif
#ifndef _syscall2
#define _syscall2(tr, nr, t1, n1, t2, n2) \
tr nr(t1 n1, t2 n2) { \
return syscall(__NR_##nr, n1, n2); \
}
#endif
#ifndef _syscall3
#define _syscall3(tr, nr, t1, n1, t2, n2, t3, n3) \
tr nr(t1 n1, t2 n2, t3 n3) { \
return syscall(__NR_##nr, n1, n2, n3); \
}
#endif
#ifndef _syscall4
#define _syscall4(tr, nr, t1, n1, t2, n2, t3, n3, t4, n4) \
tr nr(t1 n1, t2 n2, t3 n3, t4 n4) { \
return syscall(__NR_##nr, n1, n2, n3, n4); \
}
#endif
#ifndef _syscall5
#define _syscall5(tr, nr, t1, n1, t2, n2, t3, n3, t4, n4, t5, n5) \
tr nr(t1 n1, t2 n2, t3 n3, t4 n4, t5 n5) { \
return syscall(__NR_##nr, n1, n2, n3, n4, n5); \
}
#endif
#ifndef _syscall6
#define _syscall6(tr, nr, t1, n1, t2, n2, t3, n3, t4, n4, t5, n5, t6, n6) \
tr nr(t1 n1, t2 n2, t3 n3, t4 n4, t5 n5, t6 n6) { \
return syscall(__NR_##nr, n1, n2, n3, n4, n5, n6); \
}
#endif
/* Define some syscall numbers that are sometimes needed */
/* Epoll was provided as a patch for 2.4 for a long time and was not always
* exported as a known sysctl number by libc.
*/
#if !defined(__NR_epoll_ctl)
#if defined(__powerpc__) || defined(__powerpc64__)
#define __NR_epoll_create 236
#define __NR_epoll_ctl 237
#define __NR_epoll_wait 238
#elif defined(__sparc__) || defined(__sparc64__)
#define __NR_epoll_create 193
#define __NR_epoll_ctl 194
#define __NR_epoll_wait 195
#elif defined(__x86_64__)
#define __NR_epoll_create 213
#define __NR_epoll_ctl 214
#define __NR_epoll_wait 215
#elif defined(__alpha__)
#define __NR_epoll_create 407
#define __NR_epoll_ctl 408
#define __NR_epoll_wait 409
#elif defined (__i386__)
#define __NR_epoll_create 254
#define __NR_epoll_ctl 255
#define __NR_epoll_wait 256
#elif defined (__s390__) || defined(__s390x__)
#define __NR_epoll_create 249
#define __NR_epoll_ctl 250
#define __NR_epoll_wait 251
#endif /* $arch */
#endif /* __NR_epoll_ctl */
/* splice is even more recent than epoll. It appeared around 2.6.18 but was
* not in libc for a while.
*/
#ifndef __NR_splice
#if defined(__powerpc__) || defined(__powerpc64__)
#define __NR_splice 283
#elif defined(__sparc__) || defined(__sparc64__)
#define __NR_splice 232
#elif defined(__x86_64__)
#define __NR_splice 275
#elif defined(__alpha__)
#define __NR_splice 468
#elif defined (__i386__)
#define __NR_splice 313
#elif defined(__s390__) || defined(__s390x__)
#define __NR_splace 306
#endif /* $arch */
#endif /* __NR_splice */
/* accept4() appeared in Linux 2.6.28, but it might not be in all libcs. Some
* archs have it as a native syscall, other ones use the socketcall instead.
*/
#ifndef __NR_accept4
#if defined(__x86_64__)
#define __NR_accept4 288
#elif defined(__sparc__) || defined(__sparc64__)
#define __NR_accept4 323
#elif defined(__arm__) || defined(__thumb__)
#define __NR_accept4 (__NR_SYSCALL_BASE+366)
#else
#define ACCEPT4_USE_SOCKETCALL 1
#ifndef SYS_ACCEPT4
#define SYS_ACCEPT4 18
#endif /* SYS_ACCEPT4 */
#endif /* $arch */
#endif /* __NR_accept4 */
#endif /* __linux__ */
#endif /* _COMMON_SYSCALL_H */
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/
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