2 * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com)
3 * Licensed under the GPL
6 #include "linux/sched.h"
7 #include "linux/file.h"
8 #include "linux/smp_lock.h"
10 #include "linux/utsname.h"
11 #include "linux/msg.h"
12 #include "linux/shm.h"
13 #include "linux/sys.h"
14 #include "linux/syscalls.h"
15 #include "linux/unistd.h"
16 #include "linux/slab.h"
17 #include "linux/utime.h"
19 #include "asm/uaccess.h"
21 #include "kern_util.h"
22 #include "user_util.h"
23 #include "sysdep/syscalls.h"
24 #include "mode_kern.h"
25 #include "choose-mode.h"
27 /* Unlocked, I don't care if this is a bit off */
34 current
->thread
.forking
= 1;
35 ret
= do_fork(SIGCHLD
, 0, NULL
, 0, NULL
, NULL
);
36 current
->thread
.forking
= 0;
44 current
->thread
.forking
= 1;
45 ret
= do_fork(CLONE_VFORK
| CLONE_VM
| SIGCHLD
, 0, NULL
, 0, NULL
,
47 current
->thread
.forking
= 0;
51 /* common code for old and new mmaps */
52 long sys_mmap2(unsigned long addr
, unsigned long len
,
53 unsigned long prot
, unsigned long flags
,
54 unsigned long fd
, unsigned long pgoff
)
57 struct file
* file
= NULL
;
59 flags
&= ~(MAP_EXECUTABLE
| MAP_DENYWRITE
);
60 if (!(flags
& MAP_ANONYMOUS
)) {
66 down_write(¤t
->mm
->mmap_sem
);
67 error
= do_mmap_pgoff(file
, addr
, len
, prot
, flags
, pgoff
);
68 up_write(¤t
->mm
->mmap_sem
);
76 long old_mmap(unsigned long addr
, unsigned long len
,
77 unsigned long prot
, unsigned long flags
,
78 unsigned long fd
, unsigned long offset
)
81 if (offset
& ~PAGE_MASK
)
84 err
= sys_mmap2(addr
, len
, prot
, flags
, fd
, offset
>> PAGE_SHIFT
);
89 * sys_pipe() is the normal C calling standard for creating
90 * a pipe. It's not the way unix traditionally does this, though.
92 long sys_pipe(unsigned long __user
* fildes
)
99 if (copy_to_user(fildes
, fd
, sizeof(fd
)))
106 long sys_uname(struct old_utsname
* name
)
112 err
=copy_to_user(name
, &system_utsname
, sizeof (*name
));
114 return err
?-EFAULT
:0;
117 long sys_olduname(struct oldold_utsname
* name
)
123 if (!access_ok(VERIFY_WRITE
,name
,sizeof(struct oldold_utsname
)))
128 error
= __copy_to_user(&name
->sysname
,&system_utsname
.sysname
,
130 error
|= __put_user(0,name
->sysname
+__OLD_UTS_LEN
);
131 error
|= __copy_to_user(&name
->nodename
,&system_utsname
.nodename
,
133 error
|= __put_user(0,name
->nodename
+__OLD_UTS_LEN
);
134 error
|= __copy_to_user(&name
->release
,&system_utsname
.release
,
136 error
|= __put_user(0,name
->release
+__OLD_UTS_LEN
);
137 error
|= __copy_to_user(&name
->version
,&system_utsname
.version
,
139 error
|= __put_user(0,name
->version
+__OLD_UTS_LEN
);
140 error
|= __copy_to_user(&name
->machine
,&system_utsname
.machine
,
142 error
|= __put_user(0,name
->machine
+__OLD_UTS_LEN
);
146 error
= error
? -EFAULT
: 0;
151 DEFINE_SPINLOCK(syscall_lock
);
153 static int syscall_index
= 0;
155 int next_syscall_index(int limit
)
159 spin_lock(&syscall_lock
);
161 if(++syscall_index
== limit
)
163 spin_unlock(&syscall_lock
);
168 * Overrides for Emacs so that we follow Linus's tabbing style.
169 * Emacs will notice this stuff at the end of the file and automatically
170 * adjust the settings for this buffer only. This must remain at the end
172 * ---------------------------------------------------------------------------
174 * c-file-style: "linux"
This page took 0.035352 seconds and 5 git commands to generate.