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"
18 #include <linux/vs_cvirt.h>
21 #include "asm/uaccess.h"
22 #include "kern_util.h"
23 #include "user_util.h"
24 #include "sysdep/syscalls.h"
25 #include "mode_kern.h"
26 #include "choose-mode.h"
28 /* Unlocked, I don't care if this is a bit off */
35 current->thread.forking = 1;
36 ret = do_fork(SIGCHLD, UPT_SP(¤t->thread.regs.regs),
37 ¤t->thread.regs, 0, NULL, NULL);
38 current->thread.forking = 0;
46 current->thread.forking = 1;
47 ret = do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD,
48 UPT_SP(¤t->thread.regs.regs),
49 ¤t->thread.regs, 0, NULL, NULL);
50 current->thread.forking = 0;
54 /* common code for old and new mmaps */
55 long sys_mmap2(unsigned long addr, unsigned long len,
56 unsigned long prot, unsigned long flags,
57 unsigned long fd, unsigned long pgoff)
60 struct file * file = NULL;
62 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
63 if (!(flags & MAP_ANONYMOUS)) {
69 down_write(¤t->mm->mmap_sem);
70 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
71 up_write(¤t->mm->mmap_sem);
79 long old_mmap(unsigned long addr, unsigned long len,
80 unsigned long prot, unsigned long flags,
81 unsigned long fd, unsigned long offset)
84 if (offset & ~PAGE_MASK)
87 err = sys_mmap2(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
92 * sys_pipe() is the normal C calling standard for creating
93 * a pipe. It's not the way unix traditionally does this, though.
95 long sys_pipe(unsigned long __user * fildes)
102 if (copy_to_user(fildes, fd, sizeof(fd)))
109 long sys_uname(struct old_utsname __user * name)
115 err=copy_to_user(name, vx_new_utsname(), sizeof (*name));
117 return err?-EFAULT:0;
120 long sys_olduname(struct oldold_utsname __user * name)
123 struct new_utsname *ptr;
127 if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname)))
132 ptr = vx_new_utsname();
133 error = __copy_to_user(&name->sysname,ptr->sysname,
135 error |= __put_user(0,name->sysname+__OLD_UTS_LEN);
136 error |= __copy_to_user(&name->nodename,ptr->nodename,
138 error |= __put_user(0,name->nodename+__OLD_UTS_LEN);
139 error |= __copy_to_user(&name->release,ptr->release,
141 error |= __put_user(0,name->release+__OLD_UTS_LEN);
142 error |= __copy_to_user(&name->version,ptr->version,
144 error |= __put_user(0,name->version+__OLD_UTS_LEN);
145 error |= __copy_to_user(&name->machine,ptr->machine,
147 error |= __put_user(0,name->machine+__OLD_UTS_LEN);
151 error = error ? -EFAULT : 0;
156 DEFINE_SPINLOCK(syscall_lock);
158 static int syscall_index = 0;
160 int next_syscall_index(int limit)
164 spin_lock(&syscall_lock);
166 if(++syscall_index == limit)
168 spin_unlock(&syscall_lock);