sys_clone.h (1877B)
1 // $Id$ --*- c -*-- 2 3 // Copyright (C) 2004 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de> 4 // 5 // This program is free software; you can redistribute it and/or modify 6 // it under the terms of the GNU General Public License as published by 7 // the Free Software Foundation; version 2 of the License. 8 // 9 // This program is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU General Public License for more details. 13 // 14 // You should have received a copy of the GNU General Public License 15 // along with this program; if not, write to the Free Software 16 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 17 18 19 #ifndef H_UTIL_VSERVER_SRC_SYS_CLONE_H 20 #define H_UTIL_VSERVER_SRC_SYS_CLONE_H 21 22 #include <unistd.h> 23 #include "lib/syscall-wrap.h" 24 #define __NR__sys_clone __NR_clone 25 26 #ifndef ENSC_SYSCALL_TRADITIONAL 27 # include <errno.h> 28 29 # if defined(__s390__) 30 inline static UNUSED ALWAYSINLINE 31 _syscall2(int, _sys_clone, void *, child_stack, int, flags) 32 # else 33 inline static UNUSED ALWAYSINLINE 34 _syscall2(int, _sys_clone, int, flags, void *, child_stack) 35 # endif 36 #endif 37 38 inline static UNUSED ALWAYSINLINE 39 int sys_clone(int flags, void *child_stack) 40 { 41 int ret; 42 #ifdef __sparc__ 43 int parent = getpid(); 44 #endif 45 46 #if defined(__s390__) && defined(ENSC_SYSCALL_TRADITIONAL) 47 ret = syscall(__NR__sys_clone, child_stack, flags); 48 #elif defined(__s390__) 49 ret = _sys_clone(child_stack, flags); 50 #elif defined(ENSC_SYSCALL_TRADITIONAL) 51 ret = syscall(__NR__sys_clone, flags, child_stack); 52 #else 53 ret = _sys_clone(flags, child_stack); 54 #endif 55 #ifdef __sparc__ 56 if (ret == parent) 57 ret = 0; 58 #endif 59 return ret; 60 } 61 62 #undef __NR__sys_clone 63 64 #define ENSC_HAVE_SYSCLONE 1 65 66 #endif // H_UTIL_VSERVER_SRC_SYS_CLONE_H