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From 40885bb29e3f39fc06787075f666a0ec2ac35361 Mon Sep 17 00:00:00 2001
From: Daniel Mack <daniel@zonque.org>
Date: Wed, 8 Oct 2014 15:32:41 +0200
Subject: [PATCH] sd-bus: sync kdbus.h (ABI break)
Sync kdbus.h once again. Two thing have changed:
a) KDBUS_CMD_EP_* was renamed to KDBUS_CMD_ENDPOINT_*
b) struct kdbus_cmd_hello and struct kdbus_cmd_make gained a
'features' bitfield (which is currently unused)
---
src/libsystemd/sd-bus/bus-kernel.c | 19 ++++++++++---------
src/libsystemd/sd-bus/kdbus.h | 16 ++++++++++------
2 files changed, 20 insertions(+), 15 deletions(-)
diff --git a/src/libsystemd/sd-bus/bus-kernel.c b/src/libsystemd/sd-bus/bus-kernel.c
index b431d78139..c3dbc837d7 100644
--- a/src/libsystemd/sd-bus/bus-kernel.c
+++ b/src/libsystemd/sd-bus/bus-kernel.c
@@ -1307,9 +1307,9 @@ int bus_kernel_create_bus(const char *name, bool world, char **s) {
return -errno;
}
- /* The higher 32bit of the flags field are considered
- * 'incompatible flags'. Refuse them all for now. */
- if (make->flags > 0xFFFFFFFFULL) {
+ /* The features field are considered 'incompatible flags'.
+ * Refuse them all for now. */
+ if (make->features) {
safe_close(fd);
return -ENOTSUP;
}
@@ -1439,14 +1439,14 @@ int bus_kernel_create_endpoint(const char *bus_name, const char *ep_name, char *
n->size = offsetof(struct kdbus_item, str) + strlen(ep_name) + 1;
strcpy(n->str, ep_name);
- if (ioctl(fd, KDBUS_CMD_EP_MAKE, make) < 0) {
+ if (ioctl(fd, KDBUS_CMD_ENDPOINT_MAKE, make) < 0) {
safe_close(fd);
return -errno;
}
- /* The higher 32bit of the flags field are considered
- * 'incompatible flags'. Refuse them all for now. */
- if (make->flags > 0xFFFFFFFFULL) {
+ /* The features field are considered 'incompatible flags'.
+ * Refuse them all for now. */
+ if (make->features) {
safe_close(fd);
return -ENOTSUP;
}
@@ -1503,7 +1503,7 @@ int bus_kernel_set_endpoint_policy(int fd, uid_t uid, BusEndpoint *ep) {
n = KDBUS_ITEM_NEXT(n);
}
- r = ioctl(fd, KDBUS_CMD_EP_UPDATE, update);
+ r = ioctl(fd, KDBUS_CMD_ENDPOINT_UPDATE, update);
if (r < 0)
return -errno;
@@ -1576,7 +1576,8 @@ int bus_kernel_make_starter(
/* The higher 32bit of both flags fields are considered
* 'incompatible flags'. Refuse them all for now. */
- if (hello->bus_flags > 0xFFFFFFFFULL ||
+ if (hello->features ||
+ hello->bus_flags > 0xFFFFFFFFULL ||
hello->conn_flags > 0xFFFFFFFFULL)
return -ENOTSUP;
diff --git a/src/libsystemd/sd-bus/kdbus.h b/src/libsystemd/sd-bus/kdbus.h
index 8994b5673d..79a17f3449 100644
--- a/src/libsystemd/sd-bus/kdbus.h
+++ b/src/libsystemd/sd-bus/kdbus.h
@@ -554,6 +554,7 @@ enum kdbus_attach_flags {
/**
* struct kdbus_cmd_hello - struct to say hello to kdbus
* @size: The total size of the structure
+ * @features: Feature negotiation bitmask
* @conn_flags: Connection flags (KDBUS_HELLO_*).
* @attach_flags: Mask of metadata to attach to each message sent
* (KDBUS_ATTACH_*)
@@ -573,6 +574,7 @@ enum kdbus_attach_flags {
*/
struct kdbus_cmd_hello {
__u64 size;
+ __u64 features;
__u64 conn_flags;
__u64 attach_flags;
__u64 bus_flags;
@@ -596,14 +598,16 @@ enum kdbus_make_flags {
/**
* struct kdbus_cmd_make - struct to make a bus, an endpoint or a domain
* @size: The total size of the struct
+ * @features: Feature negotiation bitmask
* @flags: Properties for the bus/ep/domain to create
* @items: Items describing details
*
- * This structure is used with the KDBUS_CMD_BUS_MAKE, KDBUS_CMD_EP_MAKE and
- * KDBUS_CMD_DOMAIN_MAKE ioctls.
+ * This structure is used with the KDBUS_CMD_BUS_MAKE, KDBUS_CMD_ENDPOINT_MAKE
+ * and KDBUS_CMD_DOMAIN_MAKE ioctls.
*/
struct kdbus_cmd_make {
__u64 size;
+ __u64 features;
__u64 flags;
struct kdbus_item items[0];
} __attribute__((aligned(8)));
@@ -775,7 +779,7 @@ struct kdbus_cmd_match {
* is closed.
* @KDBUS_CMD_DOMAIN_MAKE: Similar to KDBUS_CMD_BUS_MAKE, but it creates a
* new kdbus domain.
- * @KDBUS_CMD_EP_MAKE: Creates a new named special endpoint to talk to
+ * @KDBUS_CMD_ENDPOINT_MAKE: Creates a new named special endpoint to talk to
* the bus. Such endpoints usually carry a more
* restrictive policy and grant restricted access
* to specific applications.
@@ -811,7 +815,7 @@ struct kdbus_cmd_match {
* @KDBUS_CMD_CONN_UPDATE: Update the properties of a connection. Used to
* update the metadata subscription mask and
* policy.
- * @KDBUS_CMD_EP_UPDATE: Update the properties of a custom enpoint. Used
+ * @KDBUS_CMD_ENDPOINT_UPDATE: Update the properties of a custom enpoint. Used
* to update the policy.
* @KDBUS_CMD_MATCH_ADD: Install a match which broadcast messages should
* be delivered to the connection.
@@ -822,7 +826,7 @@ enum kdbus_ioctl_type {
struct kdbus_cmd_make),
KDBUS_CMD_DOMAIN_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x10,
struct kdbus_cmd_make),
- KDBUS_CMD_EP_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x20,
+ KDBUS_CMD_ENDPOINT_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x20,
struct kdbus_cmd_make),
KDBUS_CMD_HELLO = _IOWR(KDBUS_IOCTL_MAGIC, 0x30,
@@ -850,7 +854,7 @@ enum kdbus_ioctl_type {
KDBUS_CMD_CONN_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x61,
struct kdbus_cmd_update),
- KDBUS_CMD_EP_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x71,
+ KDBUS_CMD_ENDPOINT_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x71,
struct kdbus_cmd_update),
KDBUS_CMD_MATCH_ADD = _IOW(KDBUS_IOCTL_MAGIC, 0x80,
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