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-rw-r--r--src/libsystemd-bus/bus-control.c10
-rw-r--r--src/libsystemd-bus/bus-kernel.c8
-rw-r--r--src/libsystemd-bus/bus-kernel.h10
-rw-r--r--src/libsystemd-bus/kdbus.h143
4 files changed, 77 insertions, 94 deletions
diff --git a/src/libsystemd-bus/bus-control.c b/src/libsystemd-bus/bus-control.c
index 186724e8ad..966398944f 100644
--- a/src/libsystemd-bus/bus-control.c
+++ b/src/libsystemd-bus/bus-control.c
@@ -216,7 +216,7 @@ static int kernel_get_list(sd_bus *bus, uint64_t flags, char ***x) {
name_list = (struct kdbus_name_list *) ((uint8_t *) bus->kdbus_buffer + cmd.offset);
- KDBUS_PART_FOREACH(name, name_list, names) {
+ KDBUS_ITEM_FOREACH(name, name_list, names) {
if (name->size > sizeof(*name)) {
r = strv_extend(x, name->name);
@@ -383,7 +383,7 @@ static int bus_get_owner_kdbus(
c->mask |= SD_BUS_CREDS_UNIQUE_NAME;
}
- KDBUS_PART_FOREACH(item, conn_info, items) {
+ KDBUS_ITEM_FOREACH(item, conn_info, items) {
switch (item->type) {
@@ -439,7 +439,7 @@ static int bus_get_owner_kdbus(
case KDBUS_ITEM_CMDLINE:
if (mask & SD_BUS_CREDS_CMDLINE) {
- c->cmdline_size = item->size - KDBUS_PART_HEADER_SIZE;
+ c->cmdline_size = item->size - KDBUS_ITEM_HEADER_SIZE;
c->cmdline = memdup(item->data, c->cmdline_size);
if (!c->cmdline) {
r = -ENOMEM;
@@ -471,7 +471,7 @@ static int bus_get_owner_kdbus(
SD_BUS_CREDS_INHERITABLE_CAPS | SD_BUS_CREDS_BOUNDING_CAPS) & mask;
if (m) {
- c->capability_size = item->size - KDBUS_PART_HEADER_SIZE;
+ c->capability_size = item->size - KDBUS_ITEM_HEADER_SIZE;
c->capability = memdup(item->data, c->capability_size);
if (!c->capability) {
r = -ENOMEM;
@@ -1010,7 +1010,7 @@ static int bus_add_match_internal_kernel(
item->type = KDBUS_MATCH_BLOOM;
memcpy(item->data64, bloom, BLOOM_SIZE);
- item = KDBUS_PART_NEXT(item);
+ item = KDBUS_ITEM_NEXT(item);
}
if (sender) {
diff --git a/src/libsystemd-bus/bus-kernel.c b/src/libsystemd-bus/bus-kernel.c
index 5ed836eeb0..f234891889 100644
--- a/src/libsystemd-bus/bus-kernel.c
+++ b/src/libsystemd-bus/bus-kernel.c
@@ -462,7 +462,7 @@ static void close_kdbus_msg(sd_bus *bus, struct kdbus_msg *k) {
off = (uint8_t *)k - (uint8_t *)bus->kdbus_buffer;
ioctl(bus->input_fd, KDBUS_CMD_FREE, &off);
- KDBUS_PART_FOREACH(d, k, items) {
+ KDBUS_ITEM_FOREACH(d, k, items) {
if (d->type == KDBUS_ITEM_FDS)
close_many(d->fds, (d->size - offsetof(struct kdbus_item, fds)) / sizeof(int));
@@ -589,7 +589,7 @@ static int bus_kernel_translate_message(sd_bus *bus, struct kdbus_msg *k) {
assert(k);
assert(k->payload_type == KDBUS_PAYLOAD_KERNEL);
- KDBUS_PART_FOREACH(d, k, items) {
+ KDBUS_ITEM_FOREACH(d, k, items) {
if (d->type >= _KDBUS_ITEM_KERNEL_BASE && d->type < _KDBUS_ITEM_KERNEL_BASE + ELEMENTSOF(translate)) {
if (found)
return -EBADMSG;
@@ -620,7 +620,7 @@ static int bus_kernel_make_message(sd_bus *bus, struct kdbus_msg *k) {
assert(k);
assert(k->payload_type == KDBUS_PAYLOAD_DBUS1);
- KDBUS_PART_FOREACH(d, k, items) {
+ KDBUS_ITEM_FOREACH(d, k, items) {
size_t l;
l = d->size - offsetof(struct kdbus_item, data);
@@ -680,7 +680,7 @@ static int bus_kernel_make_message(sd_bus *bus, struct kdbus_msg *k) {
if (r < 0)
return r;
- KDBUS_PART_FOREACH(d, k, items) {
+ KDBUS_ITEM_FOREACH(d, k, items) {
size_t l;
l = d->size - offsetof(struct kdbus_item, data);
diff --git a/src/libsystemd-bus/bus-kernel.h b/src/libsystemd-bus/bus-kernel.h
index a9dddc23d9..1771020903 100644
--- a/src/libsystemd-bus/bus-kernel.h
+++ b/src/libsystemd-bus/bus-kernel.h
@@ -23,16 +23,16 @@
#include "sd-bus.h"
-#define KDBUS_PART_NEXT(item) \
+#define KDBUS_ITEM_NEXT(item) \
(typeof(item))(((uint8_t *)item) + ALIGN8((item)->size))
-#define KDBUS_PART_FOREACH(part, head, first) \
+#define KDBUS_ITEM_FOREACH(part, head, first) \
for (part = (head)->first; \
(uint8_t *)(part) < (uint8_t *)(head) + (head)->size; \
- part = KDBUS_PART_NEXT(part))
+ part = KDBUS_ITEM_NEXT(part))
-#define KDBUS_PART_HEADER_SIZE offsetof(struct kdbus_item, data)
-#define KDBUS_ITEM_SIZE(s) ALIGN8((s) + KDBUS_PART_HEADER_SIZE)
+#define KDBUS_ITEM_HEADER_SIZE offsetof(struct kdbus_item, data)
+#define KDBUS_ITEM_SIZE(s) ALIGN8((s) + KDBUS_ITEM_HEADER_SIZE)
#define MEMFD_CACHE_MAX 32
diff --git a/src/libsystemd-bus/kdbus.h b/src/libsystemd-bus/kdbus.h
index 13fe49a2b9..6775789fe8 100644
--- a/src/libsystemd-bus/kdbus.h
+++ b/src/libsystemd-bus/kdbus.h
@@ -27,25 +27,11 @@
#define KDBUS_DST_ID_BROADCAST (~0ULL)
/**
- * struct KDBUS_PART_HEADER - anonymous struct used as header
- * @size: Size of element, excluding padding bytes
- * @type Type of element
- *
- * Common first elements in a structure, used to specify the type
- * and size of the data.
- * */
-#define KDBUS_PART_HEADER \
- struct { \
- __u64 size; \
- __u64 type; \
- }
-
-/**
* struct kdbus_notify_name_change - name registry change message
- * @old_id Former owner of a name
- * @new_id New owner of a name
- * @flags flags from KDBUS_NAME_*
- * @name Well-known name
+ * @old_id: Former owner of a name
+ * @new_id: New owner of a name
+ * @flags: flags from KDBUS_NAME_*
+ * @name: Well-known name
*
* Data attached to:
* KDBUS_ITEM_NAME_ADD
@@ -64,8 +50,8 @@ struct kdbus_notify_name_change {
/**
* struct kdbus_notify_id_change - name registry change message
- * @id New or former owner of the name
- * @flags flags field from KDBUS_HELLO_*
+ * @id: New or former owner of the name
+ * @flags: flags field from KDBUS_HELLO_*
*
* Data attached to:
* KDBUS_ITEM_ID_ADD
@@ -81,11 +67,11 @@ struct kdbus_notify_id_change {
/**
* struct kdbus_creds - process credentials
- * @uid User ID
- * @gid Group ID
- * @pid Process ID
- * @tid Thread ID
- * @starttime Starttime of the process
+ * @uid: User ID
+ * @gid: Group ID
+ * @pid: Process ID
+ * @tid: Thread ID
+ * @starttime: Starttime of the process
*
* The starttime of the process PID. This is useful to detect PID overruns
* from the client side. i.e. if you use the PID to look something up in
@@ -102,8 +88,8 @@ struct kdbus_creds {
/**
* struct kdbus_audit - audit information
- * @sessionid The audit session ID
- * @loginuid The audit login uid
+ * @sessionid: The audit session ID
+ * @loginuid: The audit login uid
*/
struct kdbus_audit {
__u64 sessionid;
@@ -123,8 +109,8 @@ struct kdbus_timestamp {
/**
* struct kdbus_vec - I/O vector for kdbus payload items
* @size: The size of the vector
- * @address Memory address for memory addresses
- * @offset Offset in the in-message payload memory
+ * @address: Memory address for memory addresses
+ * @offset: Offset in the in-message payload memory
*/
struct kdbus_vec {
__u64 size;
@@ -148,21 +134,50 @@ struct kdbus_memfd {
/**
* struct kdbus_name - a registered well-known name with its flags
- * @flags flags from KDBUS_NAME_*
- * @name well-known name
+ * @flags: flags from KDBUS_NAME_*
+ * @name: well-known name
*/
struct kdbus_name {
__u64 flags;
char name[0];
};
+/**
+ * struct kdbus_policy_access - policy access item
+ * @type: One of KDBUS_POLICY_ACCESS_* types
+ * @bits: Access to grant. One of KDBUS_POLICY_*
+ * @id: For KDBUS_POLICY_ACCESS_USER, the uid
+ * For KDBUS_POLICY_ACCESS_GROUP, the gid
+ */
+struct kdbus_policy_access {
+ __u64 type; /* USER, GROUP, WORLD */
+ __u64 bits; /* RECV, SEND, OWN */
+ __u64 id; /* uid, gid, 0 */
+};
+
+/*
+ * struct kdbus_policy - a policy to upload
+ * @size: The total size of the structure
+ * @type: KDBUS_POLICY_NAME or KDBUS_POLICY_ACCESS
+ * @name: The well-known name to grant access to,
+ * if @type is KDBUS_POLICY_NAME
+ * @access: The policy access details,
+ * if @type is KDBUS_POLICY_ACCESS
+ */
+struct kdbus_policy {
+ union {
+ struct kdbus_policy_access access;
+ char name[0];
+ };
+};
+
/* Message Item Types */
enum {
_KDBUS_ITEM_NULL,
/* Filled in by userspace */
- _KDBUS_ITEM_USER_BASE = 1,
- KDBUS_ITEM_PAYLOAD_VEC = 1, /* .data_vec, reference to memory area */
+ _KDBUS_ITEM_USER_BASE,
+ KDBUS_ITEM_PAYLOAD_VEC = _KDBUS_ITEM_USER_BASE,
KDBUS_ITEM_PAYLOAD_OFF, /* .data_vec, reference to memory area */
KDBUS_ITEM_PAYLOAD_MEMFD, /* file descriptor of a special data file */
KDBUS_ITEM_FDS, /* .data_fds of file descriptors */
@@ -170,13 +185,15 @@ enum {
KDBUS_ITEM_DST_NAME, /* destination's well-known name, in .str */
KDBUS_ITEM_PRIORITY, /* queue priority for message */
+ _KDBUS_ITEM_POLICY_BASE = 0x400,
+ KDBUS_ITEM_POLICY_NAME = _KDBUS_ITEM_POLICY_BASE,
+ KDBUS_ITEM_POLICY_ACCESS,
+
/* Filled in by kernelspace */
- _KDBUS_ITEM_ATTACH_BASE = 0x400,
- KDBUS_ITEM_NAME = 0x400,/* NUL separated string list with well-known names of source */
+ _KDBUS_ITEM_ATTACH_BASE = 0x600,
+ KDBUS_ITEM_NAME = _KDBUS_ITEM_ATTACH_BASE,
KDBUS_ITEM_STARTER_NAME, /* Only used in HELLO for starter connection */
KDBUS_ITEM_TIMESTAMP, /* .timestamp */
-
- /* when appended to a message, the following items refer to the sender */
KDBUS_ITEM_CREDS, /* .creds */
KDBUS_ITEM_PID_COMM, /* optional, in .str */
KDBUS_ITEM_TID_COMM, /* optional, in .str */
@@ -189,7 +206,7 @@ enum {
/* Special messages from kernel, consisting of one and only one of these data blocks */
_KDBUS_ITEM_KERNEL_BASE = 0x800,
- KDBUS_ITEM_NAME_ADD = 0x800,/* .name_change */
+ KDBUS_ITEM_NAME_ADD = _KDBUS_ITEM_KERNEL_BASE,
KDBUS_ITEM_NAME_REMOVE, /* .name_change */
KDBUS_ITEM_NAME_CHANGE, /* .name_change */
KDBUS_ITEM_ID_ADD, /* .id_change */
@@ -198,13 +215,14 @@ enum {
KDBUS_ITEM_REPLY_DEAD, /* dito */
};
-/**
+/*
* struct kdbus_item - chain of data blocks
- * @size : overall data record size
+ * @size: : overall data record size
* @type: kdbus_item type of data
*/
struct kdbus_item {
- KDBUS_PART_HEADER;
+ __u64 size;
+ __u64 type;
union {
/* inline data */
__u8 data[0];
@@ -229,6 +247,7 @@ struct kdbus_item {
int fds[0];
struct kdbus_notify_name_change name_change;
struct kdbus_notify_id_change id_change;
+ struct kdbus_policy policy;
};
};
@@ -272,12 +291,6 @@ struct kdbus_msg {
};
enum {
- _KDBUS_POLICY_NULL,
- KDBUS_POLICY_NAME,
- KDBUS_POLICY_ACCESS,
-};
-
-enum {
_KDBUS_POLICY_ACCESS_NULL,
KDBUS_POLICY_ACCESS_USER,
KDBUS_POLICY_ACCESS_GROUP,
@@ -291,36 +304,6 @@ enum {
};
/**
- * struct kdbus_policy_access - policy access item
- * @type: One of KDBUS_POLICY_ACCESS_* types
- * @bits: Access to grant. One of KDBUS_POLICY_*
- * @id: For KDBUS_POLICY_ACCESS_USER, the uid
- * For KDBUS_POLICY_ACCESS_GROUP, the gid
- */
-struct kdbus_policy_access {
- __u64 type; /* USER, GROUP, WORLD */
- __u64 bits; /* RECV, SEND, OWN */
- __u64 id; /* uid, gid, 0 */
-};
-
-/**
- * struct kdbus_policy - a policy to upload
- * @size: The total size of the structure
- * @type: KDBUS_POLICY_NAME or KDBUS_POLICY_ACCESS
- * @name: The well-known name to grant access to,
- * if @type is KDBUS_POLICY_NAME
- * @access: The policy access details,
- * if @type is KDBUS_POLICY_ACCESS
- */
-struct kdbus_policy {
- KDBUS_PART_HEADER;
- union {
- char name[0];
- struct kdbus_policy_access access;
- };
-};
-
-/**
* struct kdbus_cmd_policy - a series of policies to upload
* @size: The total size of the structure
* @policies: The policies to upload
@@ -331,7 +314,7 @@ struct kdbus_policy {
*/
struct kdbus_cmd_policy {
__u64 size;
- struct kdbus_policy policies[0];
+ struct kdbus_item policies[0];
};
/* Flags for struct kdbus_cmd_hello */
@@ -370,7 +353,7 @@ enum {
* (kernel → userspace)
* @pool_size: Maximum size of the pool buffer (kernel → userspace)
* @id128: Unique 128-bit ID of the bus (kernel → userspace)
- * @items; A list of items
+ * @items: A list of items
*
* This struct is used with the KDBUS_CMD_HELLO ioctl. See the ioctl
* documentation for more information.
@@ -409,7 +392,7 @@ enum {
* struct kdbus_cmd_bus_make - struct to make a bus
* @size: The total size of the struct
* @flags: Properties for the bus to create
- * @bloom_filter: Size of the bloom filter for this bus
+ * @bloom_size: Size of the bloom filter for this bus
* @items: Items describing details such as the name of the bus
*
* This structure is used with the KDBUS_CMD_BUS_MAKE ioctl. Refer to the
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-15 17:29:56 +0000