include/asm-um/unistd.h

   1 /*
   2  * Copyright (C) 2000, 2001  Jeff Dike (jdike@karaya.com)
   3  * Licensed under the GPL
   4  */
   5
   6 #ifndef _UM_UNISTD_H_
   7 #define _UM_UNISTD_H_
   8
   9 #include <linux/syscalls.h>
  10 #include "linux/resource.h"
  11 #include "asm/uaccess.h"
  12
  13 extern int um_execve(const char *file, char *const argv[], char *const env[]);
  14
  15 #ifdef __KERNEL__
  16 #define __ARCH_WANT_IPC_PARSE_VERSION
  17 #define __ARCH_WANT_OLD_READDIR
  18 #define __ARCH_WANT_OLD_STAT
  19 #define __ARCH_WANT_STAT64
  20 #define __ARCH_WANT_SYS_ALARM
  21 #define __ARCH_WANT_SYS_GETHOSTNAME
  22 #define __ARCH_WANT_SYS_PAUSE
  23 #define __ARCH_WANT_SYS_SGETMASK
  24 #define __ARCH_WANT_SYS_SIGNAL
  25 #define __ARCH_WANT_SYS_TIME
  26 #define __ARCH_WANT_SYS_UTIME
  27 #define __ARCH_WANT_SYS_WAITPID
  28 #define __ARCH_WANT_SYS_SOCKETCALL
  29 #define __ARCH_WANT_SYS_FADVISE64
  30 #define __ARCH_WANT_SYS_GETPGRP
  31 #define __ARCH_WANT_SYS_LLSEEK
  32 #define __ARCH_WANT_SYS_NICE
  33 #define __ARCH_WANT_SYS_OLD_GETRLIMIT
  34 #define __ARCH_WANT_SYS_OLDUMOUNT
  35 #define __ARCH_WANT_SYS_SIGPENDING
  36 #define __ARCH_WANT_SYS_SIGPROCMASK
  37 #endif
  38
  39 #ifdef __KERNEL_SYSCALLS__
  40
  41 #include <linux/compiler.h>
  42 #include <linux/types.h>
  43
  44 #define KERNEL_CALL(ret_t, sys, args...)        \
  45         mm_segment_t fs = get_fs();             \
  46         ret_t ret;                              \
  47         set_fs(KERNEL_DS);                      \
  48         ret = sys(args);                        \
  49         set_fs(fs);                             \
  50         return ret;
  51
  52 static inline long open(const char *pathname, int flags, int mode)
  53 {
  54         KERNEL_CALL(int, sys_open, pathname, flags, mode)
  55 }
  56
  57 static inline long dup(unsigned int fd)
  58 {
  59         KERNEL_CALL(int, sys_dup, fd);
  60 }
  61
  62 static inline long close(unsigned int fd)
  63 {
  64         KERNEL_CALL(int, sys_close, fd);
  65 }
  66
  67 static inline int execve(const char *filename, char *const argv[],
  68                          char *const envp[])
  69 {
  70         KERNEL_CALL(int, um_execve, filename, argv, envp);
  71 }
  72
  73 static inline long waitpid(pid_t pid, unsigned int *status, int options)
  74 {
  75         KERNEL_CALL(pid_t, sys_wait4, pid, status, options, NULL)
  76 }
  77
  78 static inline pid_t setsid(void)
  79 {
  80         KERNEL_CALL(pid_t, sys_setsid)
  81 }
  82
  83 static inline long lseek(unsigned int fd, off_t offset, unsigned int whence)
  84 {
  85         KERNEL_CALL(long, sys_lseek, fd, offset, whence)
  86 }
  87
  88 static inline int read(unsigned int fd, char * buf, int len)
  89 {
  90         KERNEL_CALL(int, sys_read, fd, buf, len)
  91 }
  92
  93 static inline int write(unsigned int fd, char * buf, int len)
  94 {
  95         KERNEL_CALL(int, sys_write, fd, buf, len)
  96 }
  97
  98 long sys_mmap2(unsigned long addr, unsigned long len,
  99                 unsigned long prot, unsigned long flags,
 100                 unsigned long fd, unsigned long pgoff);
 101 int sys_execve(char *file, char **argv, char **env);
 102 long sys_clone(unsigned long clone_flags, unsigned long newsp,
 103                 int *parent_tid, int *child_tid);
 104 long sys_fork(void);
 105 long sys_vfork(void);
 106 int sys_pipe(unsigned long *fildes);
 107 int sys_ptrace(long request, long pid, long addr, long data);
 108 struct sigaction;
 109 asmlinkage long sys_rt_sigaction(int sig,
 110                                 const struct sigaction __user *act,
 111                                 struct sigaction __user *oact,
 112                                 size_t sigsetsize);
 113
 114 #endif
 115
 116 /* Save the value of __KERNEL_SYSCALLS__, undefine it, include the underlying
 117  * arch's unistd.h for the system call numbers, and restore the old
 118  * __KERNEL_SYSCALLS__.
 119  */
 120
 121 #ifdef __KERNEL_SYSCALLS__
 122 #define __SAVE_KERNEL_SYSCALLS__ __KERNEL_SYSCALLS__
 123 #endif
 124
 125 #undef __KERNEL_SYSCALLS__
 126 #include "asm/arch/unistd.h"
 127
 128 #ifdef __KERNEL_SYSCALLS__
 129 #define __KERNEL_SYSCALLS__ __SAVE_KERNEL_SYSCALLS__
 130 #endif
 131
 132 #endif
 133
 134 /*
 135  * Overrides for Emacs so that we follow Linus's tabbing style.
 136  * Emacs will notice this stuff at the end of the file and automatically
 137  * adjust the settings for this buffer only.  This must remain at the end
 138  * of the file.
 139  * ---------------------------------------------------------------------------
 140  * Local variables:
 141  * c-file-style: "linux"
 142  * End:
 143  */