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Diffstat (limited to 'src/libsystemd-bus/kdbus.h')
-rw-r--r--src/libsystemd-bus/kdbus.h119
1 files changed, 78 insertions, 41 deletions
diff --git a/src/libsystemd-bus/kdbus.h b/src/libsystemd-bus/kdbus.h
index 7f65375c44..8c643feceb 100644
--- a/src/libsystemd-bus/kdbus.h
+++ b/src/libsystemd-bus/kdbus.h
@@ -48,6 +48,11 @@ struct kdbus_creds {
__u64 starttime;
};
+struct kdbus_audit {
+ __u64 sessionid;
+ __u64 loginuid;
+};
+
#define KDBUS_SRC_ID_KERNEL (0)
#define KDBUS_DST_ID_WELL_KNOWN_NAME (0)
#define KDBUS_MATCH_SRC_ID_ANY (~0ULL)
@@ -58,25 +63,23 @@ enum {
/* Filled in by userspace */
KDBUS_MSG_NULL, /* empty record */
KDBUS_MSG_PAYLOAD, /* .data */
- KDBUS_MSG_PAYLOAD_VEC, /* .data_vec, converted into _PAYLOAD at delivery */
- KDBUS_MSG_MMAP, /* .data_vec */
- KDBUS_MSG_MMAP_DONATE, /* .data_vec, unmap the memory from the sender */
+ KDBUS_MSG_PAYLOAD_VEC, /* .data_vec */
KDBUS_MSG_UNIX_FDS, /* .data_fds of file descriptors */
- KDBUS_MSG_BLOOM, /* for broadcasts, carries bloom filter blob */
- KDBUS_MSG_DST_NAME, /* destination's well-known name */
+ KDBUS_MSG_BLOOM, /* for broadcasts, carries bloom filter blob in .data */
+ KDBUS_MSG_DST_NAME, /* destination's well-known name, in .str */
/* Filled in by kernelspace */
KDBUS_MSG_SRC_NAMES = 0x200,/* NUL separated string list with well-known names of source */
KDBUS_MSG_TIMESTAMP, /* .ts_ns of CLOCK_MONOTONIC */
KDBUS_MSG_SRC_CREDS, /* .creds */
- KDBUS_MSG_SRC_COMM, /* optional */
- KDBUS_MSG_SRC_THREAD_COMM, /* optional */
- KDBUS_MSG_SRC_EXE, /* optional */
- KDBUS_MSG_SRC_CMDLINE, /* optional */
- KDBUS_MSG_SRC_CGROUP, /* optional, specified which one */
- KDBUS_MSG_SRC_CAPS, /* caps data blob */
- KDBUS_MSG_SRC_SECLABEL, /* NUL terminated string */
- KDBUS_MSG_SRC_AUDIT, /* array of two uint64_t of audit loginuid + sessiond */
+ KDBUS_MSG_SRC_PID_COMM, /* optional, in .str */
+ KDBUS_MSG_SRC_TID_COMM, /* optional, in .str */
+ KDBUS_MSG_SRC_EXE, /* optional, in .str */
+ KDBUS_MSG_SRC_CMDLINE, /* optional, in .str (a chain of NUL str) */
+ KDBUS_MSG_SRC_CGROUP, /* optional, in .str */
+ KDBUS_MSG_SRC_CAPS, /* caps data blob, in .data */
+ KDBUS_MSG_SRC_SECLABEL, /* NUL terminated string, in .str */
+ KDBUS_MSG_SRC_AUDIT, /* .audit */
/* Special messages from kernel, consisting of one and only one of these data blocks */
KDBUS_MSG_NAME_ADD = 0x400,/* .name_change */
@@ -106,7 +109,7 @@ struct kdbus_msg_data {
union {
/* inline data */
__u8 data[0];
- char str[0];
+ char str[0];
__u32 data_u32[0];
__u64 data_u64[0];
@@ -117,6 +120,7 @@ struct kdbus_msg_data {
int fds[0]; /* int array of file descriptors */
__u64 ts_ns; /* timestamp in nanoseconds */
struct kdbus_creds creds;
+ struct kdbus_audit audit;
struct kdbus_manager_msg_name_change name_change;
struct kdbus_manager_msg_id_change id_change;
};
@@ -191,24 +195,37 @@ struct kdbus_policy {
struct kdbus_cmd_policy {
__u64 size;
- __u8 buffer[0]; /* a series of KDBUS_POLICY_NAME plus one or more KDBUS_POLICY_ACCESS each. */
+ __u8 buffer[0]; /* a series of KDBUS_POLICY_NAME plus one or
+ * more KDBUS_POLICY_ACCESS each. */
};
enum {
- KDBUS_CMD_HELLO_STARTER = 1,
- KDBUS_CMD_HELLO_ACCEPT_FD = 2,
- KDBUS_CMD_HELLO_ACCEPT_MMAP = 4,
+ KDBUS_CMD_HELLO_STARTER = 1 << 0,
+ KDBUS_CMD_HELLO_ACCEPT_FD = 1 << 1,
+ KDBUS_CMD_HELLO_ACCEPT_MMAP = 1 << 2,
+
+ /* The following have an effect on directed messages only --
+ * not for broadcasts */
+ KDBUS_CMD_HELLO_ATTACH_COMM = 1 << 10,
+ KDBUS_CMD_HELLO_ATTACH_EXE = 1 << 11,
+ KDBUS_CMD_HELLO_ATTACH_CMDLINE = 1 << 12,
+ KDBUS_CMD_HELLO_ATTACH_CGROUP = 1 << 13,
+ KDBUS_CMD_HELLO_ATTACH_CAPS = 1 << 14,
+ KDBUS_CMD_HELLO_ATTACH_SECLABEL = 1 << 15,
+ KDBUS_CMD_HELLO_ATTACH_AUDIT = 1 << 16,
};
+/* Flags for kdbus_cmd_bus_make, kdbus_cmd_ep_make and
+ * kdbus_cmd_ns_make */
enum {
- KDBUS_CMD_FNAME_ACCESS_GROUP = 1,
- KDBUS_CMD_FNAME_ACCESS_WORLD = 2,
- KDBUS_CMD_FNAME_POLICY_OPEN = 4,
+ KDBUS_ACCESS_GROUP = 1,
+ KDBUS_ACCESS_WORLD = 2,
+ KDBUS_POLICY_OPEN = 4,
};
struct kdbus_cmd_hello {
/* userspace → kernel, kernel → userspace */
- __u64 kernel_flags; /* userspace specifies its
+ __u64 conn_flags; /* userspace specifies its
* capabilities and more, kernel
* returns its capabilites and
* more. Kernel might refuse client's
@@ -233,19 +250,47 @@ struct kdbus_cmd_hello {
* to do negotiation of features of
* the payload that is transfreted. */
__u64 id; /* peer id */
+ __u64 bloom_size; /* The bloom filter size chosen by the
+ * bus owner */
};
-struct kdbus_cmd_fname {
+struct kdbus_cmd_bus_make {
__u64 size;
- __u64 kernel_flags; /* userspace → kernel, kernel → userspace
- * When creating a bus/ns/ep feature
- * kernel negotiation done the same
- * way as for KDBUS_CMD_BUS_MAKE. */
- __u64 user_flags; /* userspace → kernel
+ __u64 flags; /* userspace → kernel, kernel → userspace
+ * When creating a bus feature
+ * kernel negotiation. */
+ __u64 bus_flags; /* userspace → kernel
* When a bus is created this value is
* copied verbatim into the bus
* structure and returned from
* KDBUS_CMD_HELLO, later */
+ __u64 cgroup_id; /* the cgroup hierarchy ID for which
+ * to attach cgroup membership paths
+ * to messages. 0 if no cgroup data
+ * shall be attached. */
+ __u64 bloom_size; /* Size of the bloom filter for this bus. */
+ char name[0];
+};
+
+struct kdbus_cmd_ep_make {
+ __u64 size;
+ __u64 flags; /* userspace → kernel, kernel → userspace
+ * When creating an entry point
+ * feature kernel negotiation done the
+ * same way as for
+ * KDBUS_CMD_BUS_MAKE. Unused for
+ * now. */
+ char name[0];
+};
+
+struct kdbus_cmd_ns_make {
+ __u64 size;
+ __u64 flags; /* userspace → kernel, kernel → userspace
+ * When creating an entry point
+ * feature kernel negotiation done the
+ * same way as for
+ * KDBUS_CMD_BUS_MAKE. Unused for
+ * now. */
char name[0];
};
@@ -254,7 +299,6 @@ enum {
KDBUS_CMD_NAME_REPLACE_EXISTING = 1,
KDBUS_CMD_NAME_QUEUE = 2,
KDBUS_CMD_NAME_ALLOW_REPLACEMENT = 4,
- KDBUS_CMD_NAME_STEAL_MESSAGES = 8,
/* kernel → userspace */
KDBUS_CMD_NAME_IN_QUEUE = 0x200,
@@ -262,8 +306,9 @@ enum {
struct kdbus_cmd_name {
__u64 size;
- __u64 flags;
+ __u64 name_flags;
__u64 id; /* We allow registration/deregestration of names of other peers */
+ __u64 conn_flags;
char name[0];
};
@@ -334,14 +379,14 @@ struct kdbus_cmd_monitor {
*/
enum kdbus_cmd {
/* kdbus control node commands: require unset state */
- KDBUS_CMD_BUS_MAKE = _IOWR(KDBUS_IOC_MAGIC, 0x00, struct kdbus_cmd_fname),
- KDBUS_CMD_NS_MAKE = _IOWR(KDBUS_IOC_MAGIC, 0x10, struct kdbus_cmd_fname),
+ KDBUS_CMD_BUS_MAKE = _IOWR(KDBUS_IOC_MAGIC, 0x00, struct kdbus_cmd_bus_make),
+ KDBUS_CMD_NS_MAKE = _IOWR(KDBUS_IOC_MAGIC, 0x10, struct kdbus_cmd_ns_make),
/* kdbus control node commands: require bus owner state */
KDBUS_CMD_BUS_POLICY_SET = _IOWR(KDBUS_IOC_MAGIC, 0x20, struct kdbus_cmd_policy),
/* kdbus ep node commands: require unset state */
- KDBUS_CMD_EP_MAKE = _IOWR(KDBUS_IOC_MAGIC, 0x30, struct kdbus_cmd_fname),
+ KDBUS_CMD_EP_MAKE = _IOWR(KDBUS_IOC_MAGIC, 0x30, struct kdbus_cmd_ep_make),
KDBUS_CMD_HELLO = _IOWR(KDBUS_IOC_MAGIC, 0x31, struct kdbus_cmd_hello),
/* kdbus ep node commands: require connected state */
@@ -361,11 +406,3 @@ enum kdbus_cmd {
KDBUS_CMD_EP_POLICY_SET = _IOWR(KDBUS_IOC_MAGIC, 0x70, struct kdbus_cmd_policy),
};
#endif
-
-/* Think about:
- *
- * - allow HELLO to change unique names
- * - allow HELLO without assigning a unique name at all
- * - when receive fails due to too small buffer return real size
- * - when receiving maybe allow read-only mmaping into reciving process memory space or so?
- */
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-15 06:05:10 +0000