xenbus: allow any xenbus command over /proc/xen/xenbus (6d6df2e4) · Commits · 戴 / test

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:

Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>

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)

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