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Commit 6d6df2e4 authored by Diego Ongaro's avatar Diego Ongaro Committed by Jeremy Fitzhardinge
Browse files

xenbus: allow any xenbus command over /proc/xen/xenbus 



When xenstored is in another domain, we need to be able to send any
command over xenbus.  This doesn't pose a security problem because
its up to xenstored to determine whether a given client is allowed
to use a particular command anyway.

From linux-2.5.18-xen.hg 68d582b0ad05.

Signed-off-by: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
parent fb27cfbc

drivers/xen/xenfs/xenbus.c

+2 −16
Original line number Diff line number Diff line
@@ -486,21 +486,6 @@ static ssize_t xenbus_file_write(struct file *filp, 
	msg_type = u->u.msg.type;



	switch (msg_type) {

	case XS_TRANSACTION_START:

	case XS_TRANSACTION_END:

	case XS_DIRECTORY:

	case XS_READ:

	case XS_GET_PERMS:

	case XS_RELEASE:

	case XS_GET_DOMAIN_PATH:

	case XS_WRITE:

	case XS_MKDIR:

	case XS_RM:

	case XS_SET_PERMS:

		/* Send out a transaction */

		ret = xenbus_write_transaction(msg_type, u);

		break;



	case XS_WATCH:

	case XS_UNWATCH:

		/* (Un)Ask for some path to be watched for changes */
@@ -508,7 +493,8 @@ static ssize_t xenbus_file_write(struct file *filp, 
		break;



	default:

		ret = -EINVAL;

		/* Send out a transaction */

		ret = xenbus_write_transaction(msg_type, u);

		break;

	}

	if (ret != 0)