2 * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
6 #include "linux/config.h"
7 #include "linux/slab.h"
8 #include "asm/uaccess.h"
9 #include "asm/ptrace.h"
10 #include "choose-mode.h"
14 extern int modify_ldt(int func, void *ptr, unsigned long bytecount);
16 /* XXX this needs copy_to_user and copy_from_user */
18 int sys_modify_ldt_tt(int func, void __user *ptr, unsigned long bytecount)
20 if (!access_ok(VERIFY_READ, ptr, bytecount))
23 return modify_ldt(func, ptr, bytecount);
27 #ifdef CONFIG_MODE_SKAS
28 extern int userspace_pid[];
30 #include "skas_ptrace.h"
32 int sys_modify_ldt_skas(int func, void __user *ptr, unsigned long bytecount)
34 struct ptrace_ldt ldt;
38 buf = kmalloc(bytecount, GFP_KERNEL);
47 res = copy_from_user(buf, ptr, bytecount);
56 ldt = ((struct ptrace_ldt) { .func = func,
58 .bytecount = bytecount });
59 #warning Need to look up userspace_pid by cpu
60 res = ptrace(PTRACE_LDT, userspace_pid[0], 0, (unsigned long) &ldt);
68 res = copy_to_user(ptr, buf, n);
82 int sys_modify_ldt(int func, void __user *ptr, unsigned long bytecount)
84 return(CHOOSE_MODE_PROC(sys_modify_ldt_tt, sys_modify_ldt_skas, func,
91 * Overrides for Emacs so that we follow Linus's tabbing style.
92 * Emacs will notice this stuff at the end of the file and automatically
93 * adjust the settings for this buffer only. This must remain at the end
95 * ---------------------------------------------------------------------------
97 * c-file-style: "linux"