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Commit f8564c93 authored by Adam Borowski's avatar Adam Borowski Committed by Greg Kroah-Hartman
Browse files

vt: drop access_ok() calls in unimap ioctls 



Done by copy_{from,to}_user().

Signed-off-by: default avatarAdam Borowski <kilobyte@angband.pl>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 4f1be1b5

drivers/tty/vt/vt_ioctl.c

+0 −8
Original line number Diff line number Diff line
@@ -266,10 +266,6 @@ do_unimap_ioctl(int cmd, struct unimapdesc __user *user_ud, int perm, struct vc_ 


	if (copy_from_user(&tmp, user_ud, sizeof tmp))

		return -EFAULT;

	if (tmp.entries)

		if (!access_ok(VERIFY_WRITE, tmp.entries,

				tmp.entry_ct*sizeof(struct unipair)))

			return -EFAULT;

	switch (cmd) {

	case PIO_UNIMAP:

		if (!perm)
@@ -1170,10 +1166,6 @@ compat_unimap_ioctl(unsigned int cmd, struct compat_unimapdesc __user *user_ud, 
	if (copy_from_user(&tmp, user_ud, sizeof tmp))

		return -EFAULT;

	tmp_entries = compat_ptr(tmp.entries);

	if (tmp_entries)

		if (!access_ok(VERIFY_WRITE, tmp_entries,

				tmp.entry_ct*sizeof(struct unipair)))

			return -EFAULT;

	switch (cmd) {

	case PIO_UNIMAP:

		if (!perm)