diff options
Diffstat (limited to 'arch/um/sys-i386/ldt.c')
| -rw-r--r-- | arch/um/sys-i386/ldt.c | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/arch/um/sys-i386/ldt.c b/arch/um/sys-i386/ldt.c deleted file mode 100644 index dc755b0b9db..00000000000 --- a/arch/um/sys-i386/ldt.c +++ /dev/null @@ -1,99 +0,0 @@ -/* - * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com) - * Licensed under the GPL - */ - -#include "linux/config.h" -#include "linux/slab.h" -#include "asm/uaccess.h" -#include "asm/ptrace.h" -#include "choose-mode.h" -#include "kern.h" - -#ifdef CONFIG_MODE_TT -extern int modify_ldt(int func, void *ptr, unsigned long bytecount); - -/* XXX this needs copy_to_user and copy_from_user */ - -int sys_modify_ldt_tt(int func, void __user *ptr, unsigned long bytecount) -{ - if (!access_ok(VERIFY_READ, ptr, bytecount)) - return -EFAULT; - - return modify_ldt(func, ptr, bytecount); -} -#endif - -#ifdef CONFIG_MODE_SKAS -extern int userspace_pid[]; - -#include "skas_ptrace.h" - -int sys_modify_ldt_skas(int func, void __user *ptr, unsigned long bytecount) -{ - struct ptrace_ldt ldt; - void *buf; - int res, n; - - buf = kmalloc(bytecount, GFP_KERNEL); - if(buf == NULL) - return(-ENOMEM); - - res = 0; - - switch(func){ - case 1: - case 0x11: - res = copy_from_user(buf, ptr, bytecount); - break; - } - - if(res != 0){ - res = -EFAULT; - goto out; - } - - ldt = ((struct ptrace_ldt) { .func = func, - .ptr = buf, - .bytecount = bytecount }); -#warning Need to look up userspace_pid by cpu - res = ptrace(PTRACE_LDT, userspace_pid[0], 0, (unsigned long) &ldt); - if(res < 0) - goto out; - - switch(func){ - case 0: - case 2: - n = res; - res = copy_to_user(ptr, buf, n); - if(res != 0) - res = -EFAULT; - else - res = n; - break; - } - - out: - kfree(buf); - return(res); -} -#endif - -int sys_modify_ldt(int func, void __user *ptr, unsigned long bytecount) -{ - return(CHOOSE_MODE_PROC(sys_modify_ldt_tt, sys_modify_ldt_skas, func, - ptr, bytecount)); -} - - - -/* - * Overrides for Emacs so that we follow Linus's tabbing style. - * Emacs will notice this stuff at the end of the file and automatically - * adjust the settings for this buffer only. This must remain at the end - * of the file. - * --------------------------------------------------------------------------- - * Local variables: - * c-file-style: "linux" - * End: - */ |
