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 #define __ARCH_WANT_SYS_RT_SIGACTION
  38 #endif
  39
  40 #ifdef __KERNEL_SYSCALLS__
  41
  42 #include <linux/compiler.h>
  43 #include <linux/types.h>
  44
  45 #define KERNEL_CALL(ret_t, sys, args...)        \
  46         mm_segment_t fs = get_fs();             \
  47         ret_t ret;                              \
  48         set_fs(KERNEL_DS);                      \
  49         ret = sys(args);                        \
  50         set_fs(fs);                             \
  51         return ret;
  52
  53 static inline long open(const char *pathname, int flags, int mode)
  54 {
  55         KERNEL_CALL(int, sys_open, pathname, flags, mode)
  56 }
  57
  58 static inline long dup(unsigned int fd)
  59 {
  60         KERNEL_CALL(int, sys_dup, fd);
  61 }
  62
  63 static inline long close(unsigned int fd)
  64 {
  65         KERNEL_CALL(int, sys_close, fd);
  66 }
  67
  68 static inline int execve(const char *filename, char *const argv[],
  69                          char *const envp[])
  70 {
  71         KERNEL_CALL(int, um_execve, filename, argv, envp);
  72 }
  73
  74 static inline long waitpid(pid_t pid, unsigned int *status, int options)
  75 {
  76         KERNEL_CALL(pid_t, sys_wait4, pid, status, options, NULL)
  77 }
  78
  79 static inline pid_t setsid(void)
  80 {
  81         KERNEL_CALL(pid_t, sys_setsid)
  82 }
  83
  84 static inline long lseek(unsigned int fd, off_t offset, unsigned int whence)
  85 {
  86         KERNEL_CALL(long, sys_lseek, fd, offset, whence)
  87 }
  88
  89 static inline int read(unsigned int fd, char * buf, int len)
  90 {
  91         KERNEL_CALL(int, sys_read, fd, buf, len)
  92 }
  93
  94 static inline int write(unsigned int fd, char * buf, int len)
  95 {
  96         KERNEL_CALL(int, sys_write, fd, buf, len)
  97 }
  98
  99 long sys_mmap2(unsigned long addr, unsigned long len,
 100                 unsigned long prot, unsigned long flags,
 101                 unsigned long fd, unsigned long pgoff);
 102 int sys_execve(char *file, char **argv, char **env);
 103 long sys_clone(unsigned long clone_flags, unsigned long newsp,
 104                 int *parent_tid, int *child_tid);
 105 long sys_fork(void);
 106 long sys_vfork(void);
 107 int sys_pipe(unsigned long *fildes);
 108 int sys_ptrace(long request, long pid, long addr, long data);
 109 struct sigaction;
 110 asmlinkage long sys_rt_sigaction(int sig,
 111                                 const struct sigaction __user *act,
 112                                 struct sigaction __user *oact,
 113                                 size_t sigsetsize);
 114
 115 #endif
 116
 117 /* Save the value of __KERNEL_SYSCALLS__, undefine it, include the underlying
 118  * arch's unistd.h for the system call numbers, and restore the old
 119  * __KERNEL_SYSCALLS__.
 120  */
 121
 122 #ifdef __KERNEL_SYSCALLS__
 123 #define __SAVE_KERNEL_SYSCALLS__ __KERNEL_SYSCALLS__
 124 #endif
 125
 126 #undef __KERNEL_SYSCALLS__
 127 #include "asm/arch/unistd.h"
 128
 129 #ifdef __KERNEL_SYSCALLS__
 130 #define __KERNEL_SYSCALLS__ __SAVE_KERNEL_SYSCALLS__
 131 #endif
 132
 133 #endif
 134
 135 /*
 136  * Overrides for Emacs so that we follow Linus's tabbing style.
 137  * Emacs will notice this stuff at the end of the file and automatically
 138  * adjust the settings for this buffer only.  This must remain at the end
 139  * of the file.
 140  * ---------------------------------------------------------------------------
 141  * Local variables:
 142  * c-file-style: "linux"
 143  * End:
 144  */