diff options
Diffstat (limited to 'arch/x86/ia32/sys_ia32.c')
| -rw-r--r-- | arch/x86/ia32/sys_ia32.c | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/arch/x86/ia32/sys_ia32.c b/arch/x86/ia32/sys_ia32.c index 9f5527198825..df82c0e48ded 100644 --- a/arch/x86/ia32/sys_ia32.c +++ b/arch/x86/ia32/sys_ia32.c @@ -434,62 +434,6 @@ asmlinkage long sys32_rt_sigqueueinfo(int pid, int sig, return ret; } -#ifdef CONFIG_SYSCTL_SYSCALL -struct sysctl_ia32 { - unsigned int name; - int nlen; - unsigned int oldval; - unsigned int oldlenp; - unsigned int newval; - unsigned int newlen; - unsigned int __unused[4]; -}; - - -asmlinkage long sys32_sysctl(struct sysctl_ia32 __user *args32) -{ - struct sysctl_ia32 a32; - mm_segment_t old_fs = get_fs(); - void __user *oldvalp, *newvalp; - size_t oldlen; - int __user *namep; - long ret; - - if (copy_from_user(&a32, args32, sizeof(a32))) - return -EFAULT; - - /* - * We need to pre-validate these because we have to disable - * address checking before calling do_sysctl() because of - * OLDLEN but we can't run the risk of the user specifying bad - * addresses here. Well, since we're dealing with 32 bit - * addresses, we KNOW that access_ok() will always succeed, so - * this is an expensive NOP, but so what... - */ - namep = compat_ptr(a32.name); - oldvalp = compat_ptr(a32.oldval); - newvalp = compat_ptr(a32.newval); - - if ((oldvalp && get_user(oldlen, (int __user *)compat_ptr(a32.oldlenp))) - || !access_ok(VERIFY_WRITE, namep, 0) - || !access_ok(VERIFY_WRITE, oldvalp, 0) - || !access_ok(VERIFY_WRITE, newvalp, 0)) - return -EFAULT; - - set_fs(KERNEL_DS); - lock_kernel(); - ret = do_sysctl(namep, a32.nlen, oldvalp, (size_t __user *)&oldlen, - newvalp, (size_t) a32.newlen); - unlock_kernel(); - set_fs(old_fs); - - if (oldvalp && put_user(oldlen, (int __user *)compat_ptr(a32.oldlenp))) - return -EFAULT; - - return ret; -} -#endif - /* warning: next two assume little endian */ asmlinkage long sys32_pread(unsigned int fd, char __user *ubuf, u32 count, u32 poslo, u32 poshi) |