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Commit d2f96e17 authored by Al Viro's avatar Al Viro Committed by Greg Kroah-Hartman
Browse files

osf_getdomainname(): use copy_to_user() 



commit 9ba3eb5103cf56f0daaf07de4507df76e7813ed7 upstream.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b68377cb

arch/alpha/kernel/osf_sys.c

+9 −14
Original line number Diff line number Diff line
@@ -561,25 +561,20 @@ SYSCALL_DEFINE0(getdtablesize) 
 */

SYSCALL_DEFINE2(osf_getdomainname, char __user *, name, int, namelen)

{

	unsigned len;

	int i;

	int len, err = 0;

	char *kname;



	if (!access_ok(VERIFY_WRITE, name, namelen))

		return -EFAULT;



	len = namelen;

	if (len > 32)

		len = 32;

	if (namelen > 32)

		namelen = 32;



	down_read(&uts_sem);

	for (i = 0; i < len; ++i) {

		__put_user(utsname()->domainname[i], name + i);

		if (utsname()->domainname[i] == '\0')

			break;

	}

	kname = utsname()->domainname;

	len = strnlen(kname, namelen);

	if (copy_to_user(name, kname, min(len + 1, namelen)))

		err = -EFAULT;

	up_read(&uts_sem);



	return 0;

	return err;

}



/*