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Commit e0ac3f98 authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
Browse files

Merge branch 'vt_copy_cleanup' into tty-next 



The vt copy_from/to_user cleanups were in a separate branch for others
to work off of.

Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parents 8bc39bca f8564c93

drivers/tty/vt/consolemap.c

+16 −40
Original line number Diff line number Diff line
@@ -322,15 +322,13 @@ int con_set_trans_old(unsigned char __user * arg) 
{

	int i;

	unsigned short inbuf[E_TABSZ];

	unsigned char ubuf[E_TABSZ];



	if (!access_ok(VERIFY_READ, arg, E_TABSZ))

	if (copy_from_user(ubuf, arg, E_TABSZ))

		return -EFAULT;



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

		unsigned char uc;

		__get_user(uc, arg+i);

		inbuf[i] = UNI_DIRECT_BASE | uc;

	}

	for (i = 0; i < E_TABSZ ; i++)

		inbuf[i] = UNI_DIRECT_BASE | ubuf[i];



	console_lock();

	memcpy(translations[USER_MAP], inbuf, sizeof(inbuf));
@@ -345,9 +343,6 @@ int con_get_trans_old(unsigned char __user * arg) 
	unsigned short *p = translations[USER_MAP];

	unsigned char outbuf[E_TABSZ];



	if (!access_ok(VERIFY_WRITE, arg, E_TABSZ))

		return -EFAULT;



	console_lock();

	for (i = 0; i < E_TABSZ ; i++)

	{
@@ -356,22 +351,16 @@ int con_get_trans_old(unsigned char __user * arg) 
	}

	console_unlock();



	for (i = 0; i < E_TABSZ ; i++)

		__put_user(outbuf[i], arg+i);

	return 0;

	return copy_to_user(arg, outbuf, sizeof(outbuf)) ? -EFAULT : 0;

}



int con_set_trans_new(ushort __user * arg)

{

	int i;

	unsigned short inbuf[E_TABSZ];



	if (!access_ok(VERIFY_READ, arg, E_TABSZ*sizeof(unsigned short)))

	if (copy_from_user(inbuf, arg, sizeof(inbuf)))

		return -EFAULT;



	for (i = 0; i < E_TABSZ ; i++)

		__get_user(inbuf[i], arg+i);



	console_lock();

	memcpy(translations[USER_MAP], inbuf, sizeof(inbuf));

	update_user_maps();
@@ -381,19 +370,13 @@ int con_set_trans_new(ushort __user * arg) 


int con_get_trans_new(ushort __user * arg)

{

	int i;

	unsigned short outbuf[E_TABSZ];



	if (!access_ok(VERIFY_WRITE, arg, E_TABSZ*sizeof(unsigned short)))

		return -EFAULT;



	console_lock();

	memcpy(outbuf, translations[USER_MAP], sizeof(outbuf));

	console_unlock();



	for (i = 0; i < E_TABSZ ; i++)

		__put_user(outbuf[i], arg+i);

	return 0;

	return copy_to_user(arg, outbuf, sizeof(outbuf)) ? -EFAULT : 0;

}



/*
@@ -557,14 +540,9 @@ int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list) 
	if (!ct)

		return 0;



	unilist = kmalloc_array(ct, sizeof(struct unipair), GFP_KERNEL);

	if (!unilist)

		return -ENOMEM;



	for (i = ct, plist = unilist; i; i--, plist++, list++) {

		__get_user(plist->unicode, &list->unicode);

		__get_user(plist->fontpos, &list->fontpos);

	}

	unilist = memdup_user(list, ct * sizeof(struct unipair));

	if (IS_ERR(unilist))

		return PTR_ERR(unilist);



	console_lock();
@@ -757,11 +735,11 @@ EXPORT_SYMBOL(con_copy_unimap); 
 */

int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct unipair __user *list)

{

	int i, j, k;

	int i, j, k, ret = 0;

	ushort ect;

	u16 **p1, *p2;

	struct uni_pagedir *p;

	struct unipair *unilist, *plist;

	struct unipair *unilist;



	unilist = kmalloc_array(ct, sizeof(struct unipair), GFP_KERNEL);

	if (!unilist)
@@ -792,13 +770,11 @@ int con_get_unimap(struct vc_data *vc, ushort ct, ushort __user *uct, struct uni 
		}

	}

	console_unlock();

	for (i = min(ect, ct), plist = unilist; i; i--, list++, plist++) {

		__put_user(plist->unicode, &list->unicode);

		__put_user(plist->fontpos, &list->fontpos);

	}

	__put_user(ect, uct);

	if (copy_to_user(list, unilist, min(ect, ct) * sizeof(struct unipair)))

		ret = -EFAULT;

	put_user(ect, uct);

	kfree(unilist);

	return ((ect <= ct) ? 0 : -ENOMEM);

	return ret ? ret : (ect <= ct) ? 0 : -ENOMEM;

}



/*

drivers/tty/vt/vt.c

+3 −3
Original line number Diff line number Diff line
@@ -2709,13 +2709,13 @@ int tioclinux(struct tty_struct *tty, unsigned long arg) 
	 * related to the kernel should not use this.

	 */

			data = vt_get_shift_state();

			ret = __put_user(data, p);

			ret = put_user(data, p);

			break;

		case TIOCL_GETMOUSEREPORTING:

			console_lock();	/* May be overkill */

			data = mouse_reporting();

			console_unlock();

			ret = __put_user(data, p);

			ret = put_user(data, p);

			break;

		case TIOCL_SETVESABLANK:

			console_lock();
@@ -2724,7 +2724,7 @@ int tioclinux(struct tty_struct *tty, unsigned long arg) 
			break;

		case TIOCL_GETKMSGREDIRECT:

			data = vt_get_kmsg_redirect();

			ret = __put_user(data, p);

			ret = put_user(data, p);

			break;

		case TIOCL_SETKMSGREDIRECT:

			if (!capable(CAP_SYS_ADMIN)) {

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)