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Commit 4f1be1b5 authored by Adam Borowski's avatar Adam Borowski Committed by Greg Kroah-Hartman
Browse files

vt: use memdup_user in PIO_UNIMAP ioctl 



Again, a nice linear transfer that simplifies the code.

Signed-off-by: default avatarAdam Borowski <kilobyte@angband.pl>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 915f0a8d

drivers/tty/vt/consolemap.c

+3 −8
Original line number Diff line number Diff line
@@ -540,14 +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();