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sysctl: ia64 Use the compat_sys_sysctl

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Now that we have a generic 32bit compatibility implementation
there is no need for ia64 to implement it's own.

Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2009-04-03 00:44:03 -07:00
parent da3f6f9b3e
commit 6f589526df
2 changed files with 1 additions and 56 deletions
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2
arch/ia64/ia32/ia32_entry.S
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@ -327,7 +327,7 @@ ia32_syscall_table:
data8 compat_sys_writev
data8 sys_getsid
data8 sys_fdatasync
data8 sys32_sysctl
data8 compat_sys_sysctl
data8 sys_mlock /* 150 */
data8 sys_munlock
data8 sys_mlockall

55
arch/ia64/ia32/sys_ia32.c
View File

@ -1628,61 +1628,6 @@ sys32_msync (unsigned int start, unsigned int len, int flags)
return sys_msync(addr, len + (start - addr), flags);
}
struct sysctl32 {
unsigned int name;
int nlen;
unsigned int oldval;
unsigned int oldlenp;
unsigned int newval;
unsigned int newlen;
unsigned int __unused[4];
};
#ifdef CONFIG_SYSCTL_SYSCALL
asmlinkage long
sys32_sysctl (struct sysctl32 __user *args)
{
struct sysctl32 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, args, 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 = (int __user *) 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
asmlinkage long
sys32_newuname (struct new_utsname __user *name)
{