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bus: sync with kdbus (ABI break)

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This commit is contained in:
David Herrmann
2015-02-05 16:52:42 +01:00
parent a97dcc12e4
commit b2086f601b
6 changed files with 277 additions and 348 deletions
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src/bus-proxyd/driver.c
+7 -8
View File
@@ -327,9 +327,8 @@ int bus_proxy_process_driver(sd_bus *a, sd_bus *b, sd_bus_message *m, SharedPoli
return synthetic_reply_return_strv(m, names);
} else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "ListQueuedOwners")) {
struct kdbus_cmd_name_list cmd = {};
struct kdbus_name_list *name_list;
struct kdbus_name_info *name;
struct kdbus_cmd_list cmd = {};
struct kdbus_info *name_list, *name;
_cleanup_strv_free_ char **owners = NULL;
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
char *arg0;
@@ -350,14 +349,14 @@ int bus_proxy_process_driver(sd_bus *a, sd_bus *b, sd_bus_message *m, SharedPoli
if (r < 0)
return synthetic_reply_method_errno(m, r, NULL);
cmd.flags = KDBUS_NAME_LIST_QUEUED;
r = ioctl(a->input_fd, KDBUS_CMD_NAME_LIST, &cmd);
cmd.flags = KDBUS_LIST_QUEUED;
r = ioctl(a->input_fd, KDBUS_CMD_LIST, &cmd);
if (r < 0)
return synthetic_reply_method_errno(m, -errno, NULL);
name_list = (struct kdbus_name_list *) ((uint8_t *) a->kdbus_buffer + cmd.offset);
name_list = (struct kdbus_info *) ((uint8_t *) a->kdbus_buffer + cmd.offset);
KDBUS_ITEM_FOREACH(name, name_list, names) {
KDBUS_FOREACH(name, name_list, cmd.list_size) {
const char *entry_name = NULL;
struct kdbus_item *item;
char *n;
@@ -369,7 +368,7 @@ int bus_proxy_process_driver(sd_bus *a, sd_bus *b, sd_bus_message *m, SharedPoli
if (!streq_ptr(entry_name, arg0))
continue;
if (asprintf(&n, ":1.%llu", (unsigned long long) name->owner_id) < 0) {
if (asprintf(&n, ":1.%llu", (unsigned long long) name->id) < 0) {
err = -ENOMEM;
break;
}
src/core/bus-endpoint.c
+2 -2
View File
@@ -26,14 +26,14 @@
int bus_kernel_set_endpoint_policy(int fd, uid_t uid, BusEndpoint *ep) {
struct kdbus_cmd_update *update;
struct kdbus_cmd *update;
struct kdbus_item *n;
BusEndpointPolicy *po;
Iterator i;
size_t size;
int r;
size = ALIGN8(offsetof(struct kdbus_cmd_update, items));
size = ALIGN8(offsetof(struct kdbus_cmd, items));
HASHMAP_FOREACH(po, ep->policy_hash, i) {
size += ALIGN8(offsetof(struct kdbus_item, str) + strlen(po->name) + 1);
src/libsystemd/sd-bus/bus-control.c
+14 -15
View File
@@ -52,7 +52,7 @@ _public_ int sd_bus_get_unique_name(sd_bus *bus, const char **unique) {
}
static int bus_request_name_kernel(sd_bus *bus, const char *name, uint64_t flags) {
struct kdbus_cmd_name *n;
struct kdbus_cmd *n;
size_t size, l;
int r;
@@ -60,7 +60,7 @@ static int bus_request_name_kernel(sd_bus *bus, const char *name, uint64_t flags
assert(name);
l = strlen(name) + 1;
size = offsetof(struct kdbus_cmd_name, items) + KDBUS_ITEM_SIZE(l);
size = offsetof(struct kdbus_cmd, items) + KDBUS_ITEM_SIZE(l);
n = alloca0_align(size, 8);
n->size = size;
n->flags = request_name_flags_to_kdbus(flags);
@@ -151,7 +151,7 @@ _public_ int sd_bus_request_name(sd_bus *bus, const char *name, uint64_t flags)
}
static int bus_release_name_kernel(sd_bus *bus, const char *name) {
struct kdbus_cmd_name *n;
struct kdbus_cmd *n;
size_t size, l;
int r;
@@ -159,7 +159,7 @@ static int bus_release_name_kernel(sd_bus *bus, const char *name) {
assert(name);
l = strlen(name) + 1;
size = offsetof(struct kdbus_cmd_name, items) + KDBUS_ITEM_SIZE(l);
size = offsetof(struct kdbus_cmd, items) + KDBUS_ITEM_SIZE(l);
n = alloca0_align(size, 8);
n->size = size;
@@ -233,9 +233,8 @@ _public_ int sd_bus_release_name(sd_bus *bus, const char *name) {
}
static int kernel_get_list(sd_bus *bus, uint64_t flags, char ***x) {
struct kdbus_cmd_name_list cmd = {};
struct kdbus_name_list *name_list;
struct kdbus_name_info *name;
struct kdbus_cmd_list cmd = {};
struct kdbus_info *name_list, *name;
uint64_t previous_id = 0;
int r;
@@ -244,21 +243,21 @@ static int kernel_get_list(sd_bus *bus, uint64_t flags, char ***x) {
cmd.size = sizeof(cmd);
cmd.flags = flags;
r = ioctl(bus->input_fd, KDBUS_CMD_NAME_LIST, &cmd);
r = ioctl(bus->input_fd, KDBUS_CMD_LIST, &cmd);
if (r < 0)
return -errno;
name_list = (struct kdbus_name_list *) ((uint8_t *) bus->kdbus_buffer + cmd.offset);
name_list = (struct kdbus_info *) ((uint8_t *) bus->kdbus_buffer + cmd.offset);
KDBUS_ITEM_FOREACH(name, name_list, names) {
KDBUS_FOREACH(name, name_list, cmd.list_size) {
struct kdbus_item *item;
const char *entry_name = NULL;
if ((flags & KDBUS_NAME_LIST_UNIQUE) && name->owner_id != previous_id) {
if ((flags & KDBUS_LIST_UNIQUE) && name->id != previous_id) {
char *n;
if (asprintf(&n, ":1.%llu", (unsigned long long) name->owner_id) < 0) {
if (asprintf(&n, ":1.%llu", (unsigned long long) name->id) < 0) {
r = -ENOMEM;
goto fail;
}
@@ -267,7 +266,7 @@ static int kernel_get_list(sd_bus *bus, uint64_t flags, char ***x) {
if (r < 0)
goto fail;
previous_id = name->owner_id;
previous_id = name->id;
}
KDBUS_ITEM_FOREACH(item, name, items)
@@ -295,13 +294,13 @@ static int bus_list_names_kernel(sd_bus *bus, char ***acquired, char ***activata
int r;
if (acquired) {
r = kernel_get_list(bus, KDBUS_NAME_LIST_UNIQUE | KDBUS_NAME_LIST_NAMES, &x);
r = kernel_get_list(bus, KDBUS_LIST_UNIQUE | KDBUS_LIST_NAMES, &x);
if (r < 0)
return r;
}
if (activatable) {
r = kernel_get_list(bus, KDBUS_NAME_LIST_ACTIVATORS, &y);
r = kernel_get_list(bus, KDBUS_LIST_ACTIVATORS, &y);
if (r < 0)
return r;
src/libsystemd/sd-bus/bus-kernel.c
+13 -11
View File
@@ -1521,7 +1521,7 @@ uint64_t attach_flags_to_kdbus(uint64_t mask) {
}
int bus_kernel_create_bus(const char *name, bool world, char **s) {
struct kdbus_cmd_make *make;
struct kdbus_cmd *make;
struct kdbus_item *n;
size_t l;
int fd;
@@ -1534,14 +1534,14 @@ int bus_kernel_create_bus(const char *name, bool world, char **s) {
return -errno;
l = strlen(name);
make = alloca0_align(offsetof(struct kdbus_cmd_make, items) +
make = alloca0_align(offsetof(struct kdbus_cmd, items) +
ALIGN8(offsetof(struct kdbus_item, bloom_parameter) + sizeof(struct kdbus_bloom_parameter)) +
ALIGN8(offsetof(struct kdbus_item, data64) + sizeof(uint64_t)) +
ALIGN8(offsetof(struct kdbus_item, data64) + sizeof(uint64_t)) +
ALIGN8(offsetof(struct kdbus_item, str) + DECIMAL_STR_MAX(uid_t) + 1 + l + 1),
8);
make->size = offsetof(struct kdbus_cmd_make, items);
make->size = offsetof(struct kdbus_cmd, items);
/* Set the bloom parameters */
n = make->items;
@@ -1634,7 +1634,7 @@ int bus_kernel_open_bus_fd(const char *bus, char **path) {
int bus_kernel_create_endpoint(const char *bus_name, const char *ep_name, char **ep_path) {
_cleanup_free_ char *path = NULL;
struct kdbus_cmd_make *make;
struct kdbus_cmd *make;
struct kdbus_item *n;
const char *name;
int fd;
@@ -1643,10 +1643,10 @@ int bus_kernel_create_endpoint(const char *bus_name, const char *ep_name, char *
if (fd < 0)
return fd;
make = alloca0_align(ALIGN8(offsetof(struct kdbus_cmd_make, items)) +
make = alloca0_align(ALIGN8(offsetof(struct kdbus_cmd, items)) +
ALIGN8(offsetof(struct kdbus_item, str) + DECIMAL_STR_MAX(uid_t) + 1 + strlen(ep_name) + 1),
8);
make->size = ALIGN8(offsetof(struct kdbus_cmd_make, items));
make->size = ALIGN8(offsetof(struct kdbus_cmd, items));
make->flags = KDBUS_MAKE_ACCESS_WORLD;
n = make->items;
@@ -1677,10 +1677,12 @@ int bus_kernel_create_endpoint(const char *bus_name, const char *ep_name, char *
}
int bus_kernel_try_close(sd_bus *bus) {
struct kdbus_cmd byebye = { .size = sizeof(byebye) };
assert(bus);
assert(bus->is_kernel);
if (ioctl(bus->input_fd, KDBUS_CMD_BYEBYE) < 0)
if (ioctl(bus->input_fd, KDBUS_CMD_BYEBYE, &byebye) < 0)
return -errno;
return 0;
@@ -1701,13 +1703,13 @@ int bus_kernel_drop_one(int fd) {
}
int bus_kernel_realize_attach_flags(sd_bus *bus) {
struct kdbus_cmd_update *update;
struct kdbus_cmd *update;
struct kdbus_item *n;
assert(bus);
assert(bus->is_kernel);
update = alloca0_align(offsetof(struct kdbus_cmd_update, items) +
update = alloca0_align(offsetof(struct kdbus_cmd, items) +
ALIGN8(offsetof(struct kdbus_item, data64) + sizeof(uint64_t)),
8);
@@ -1717,10 +1719,10 @@ int bus_kernel_realize_attach_flags(sd_bus *bus) {
n->data64[0] = bus->attach_flags;
update->size =
offsetof(struct kdbus_cmd_update, items) +
offsetof(struct kdbus_cmd, items) +
ALIGN8(n->size);
if (ioctl(bus->input_fd, KDBUS_CMD_CONN_UPDATE, update) < 0)
if (ioctl(bus->input_fd, KDBUS_CMD_UPDATE, update) < 0)
return -errno;
return 0;
src/libsystemd/sd-bus/bus-kernel.h
+5
View File
@@ -33,6 +33,11 @@
((uint8_t *)(part) < (uint8_t *)(head) + (head)->size) && \
((uint8_t *) part >= (uint8_t *) head); \
part = KDBUS_ITEM_NEXT(part))
#define KDBUS_FOREACH(iter, first, _size) \
for (iter = (first); \
((uint8_t *)(iter) < (uint8_t *)(first) + (_size)) && \
((uint8_t *)(iter) >= (uint8_t *)(first)); \
iter = (void*)(((uint8_t *)iter) + ALIGN8((iter)->size)))
#define KDBUS_ITEM_HEADER_SIZE offsetof(struct kdbus_item, data)
#define KDBUS_ITEM_SIZE(s) ALIGN8((s) + KDBUS_ITEM_HEADER_SIZE)
src/libsystemd/sd-bus/kdbus.h
+236 -312
View File
@@ -16,7 +16,7 @@
#define KDBUS_DST_ID_NAME (0)
#define KDBUS_MATCH_ID_ANY (~0ULL)
#define KDBUS_DST_ID_BROADCAST (~0ULL)
#define KDBUS_FLAG_KERNEL (1ULL << 63)
#define KDBUS_FLAG_NEGOTIATE (1ULL << 63)
/**
* struct kdbus_notify_id_change - name registry change message
@@ -33,7 +33,7 @@
struct kdbus_notify_id_change {
__u64 id;
__u64 flags;
};
} __attribute__((__aligned__(8)));
/**
* struct kdbus_notify_name_change - name registry change message
@@ -53,7 +53,7 @@ struct kdbus_notify_name_change {
struct kdbus_notify_id_change old_id;
struct kdbus_notify_id_change new_id;
char name[0];
};
} __attribute__((__aligned__(8)));
/**
* struct kdbus_creds - process credentials
@@ -78,7 +78,7 @@ struct kdbus_creds {
__u32 egid;
__u32 sgid;
__u32 fsgid;
};
} __attribute__((__aligned__(8)));
/**
* struct kdbus_pids - process identifiers
@@ -95,7 +95,7 @@ struct kdbus_pids {
__u64 pid;
__u64 tid;
__u64 ppid;
};
} __attribute__((__aligned__(8)));
/**
* struct kdbus_caps - process capabilities
@@ -110,7 +110,7 @@ struct kdbus_pids {
struct kdbus_caps {
__u32 last_cap;
__u32 caps[0];
};
} __attribute__((__aligned__(8)));
/**
* struct kdbus_audit - audit information
@@ -123,7 +123,7 @@ struct kdbus_caps {
struct kdbus_audit {
__u32 sessionid;
__u32 loginuid;
};
} __attribute__((__aligned__(8)));
/**
* struct kdbus_timestamp
@@ -138,7 +138,7 @@ struct kdbus_timestamp {
__u64 seqnum;
__u64 monotonic_ns;
__u64 realtime_ns;
};
} __attribute__((__aligned__(8)));
/**
* struct kdbus_vec - I/O vector for kdbus payload items
@@ -156,7 +156,7 @@ struct kdbus_vec {
__u64 address;
__u64 offset;
};
};
} __attribute__((__aligned__(8)));
/**
* struct kdbus_bloom_parameter - bus-wide bloom parameters
@@ -166,7 +166,7 @@ struct kdbus_vec {
struct kdbus_bloom_parameter {
__u64 size;
__u64 n_hash;
};
} __attribute__((__aligned__(8)));
/**
* struct kdbus_bloom_filter - bloom filter containing n elements
@@ -176,7 +176,7 @@ struct kdbus_bloom_parameter {
struct kdbus_bloom_filter {
__u64 generation;
__u64 data[0];
};
} __attribute__((__aligned__(8)));
/**
* struct kdbus_memfd - a kdbus memfd
@@ -193,7 +193,7 @@ struct kdbus_memfd {
__u64 size;
int fd;
__u32 __pad;
};
} __attribute__((__aligned__(8)));
/**
* struct kdbus_name - a registered well-known name with its flags
@@ -206,6 +206,34 @@ struct kdbus_memfd {
struct kdbus_name {
__u64 flags;
char name[0];
} __attribute__((__aligned__(8)));
/**
* enum kdbus_policy_access_type - permissions of a policy record
* @_KDBUS_POLICY_ACCESS_NULL: Uninitialized/invalid
* @KDBUS_POLICY_ACCESS_USER: Grant access to a uid
* @KDBUS_POLICY_ACCESS_GROUP: Grant access to gid
* @KDBUS_POLICY_ACCESS_WORLD: World-accessible
*/
enum kdbus_policy_access_type {
_KDBUS_POLICY_ACCESS_NULL,
KDBUS_POLICY_ACCESS_USER,
KDBUS_POLICY_ACCESS_GROUP,
KDBUS_POLICY_ACCESS_WORLD,
};
/**
* enum kdbus_policy_access_flags - mode flags
* @KDBUS_POLICY_OWN: Allow to own a well-known name
* Implies KDBUS_POLICY_TALK and KDBUS_POLICY_SEE
* @KDBUS_POLICY_TALK: Allow communication to a well-known name
* Implies KDBUS_POLICY_SEE
* @KDBUS_POLICY_SEE: Allow to see a well-known name
*/
enum kdbus_policy_type {
KDBUS_POLICY_SEE = 0,
KDBUS_POLICY_TALK,
KDBUS_POLICY_OWN,
};
/**
@@ -219,12 +247,52 @@ struct kdbus_policy_access {
__u64 type; /* USER, GROUP, WORLD */
__u64 access; /* OWN, TALK, SEE */
__u64 id; /* uid, gid, 0 */
} __attribute__((__aligned__(8)));
/**
* enum kdbus_attach_flags - flags for metadata attachments
* @KDBUS_ATTACH_TIMESTAMP: Timestamp
* @KDBUS_ATTACH_CREDS: Credentials
* @KDBUS_ATTACH_PIDS: PIDs
* @KDBUS_ATTACH_AUXGROUPS: Auxiliary groups
* @KDBUS_ATTACH_NAMES: Well-known names
* @KDBUS_ATTACH_TID_COMM: The "comm" process identifier of the TID
* @KDBUS_ATTACH_PID_COMM: The "comm" process identifier of the PID
* @KDBUS_ATTACH_EXE: The path of the executable
* @KDBUS_ATTACH_CMDLINE: The process command line
* @KDBUS_ATTACH_CGROUP: The croup membership
* @KDBUS_ATTACH_CAPS: The process capabilities
* @KDBUS_ATTACH_SECLABEL: The security label
* @KDBUS_ATTACH_AUDIT: The audit IDs
* @KDBUS_ATTACH_CONN_DESCRIPTION: The human-readable connection name
* @_KDBUS_ATTACH_ALL: All of the above
* @_KDBUS_ATTACH_ANY: Wildcard match to enable any kind of
* metatdata.
*/
enum kdbus_attach_flags {
KDBUS_ATTACH_TIMESTAMP = 1ULL << 0,
KDBUS_ATTACH_CREDS = 1ULL << 1,
KDBUS_ATTACH_PIDS = 1ULL << 2,
KDBUS_ATTACH_AUXGROUPS = 1ULL << 3,
KDBUS_ATTACH_NAMES = 1ULL << 4,
KDBUS_ATTACH_TID_COMM = 1ULL << 5,
KDBUS_ATTACH_PID_COMM = 1ULL << 6,
KDBUS_ATTACH_EXE = 1ULL << 7,
KDBUS_ATTACH_CMDLINE = 1ULL << 8,
KDBUS_ATTACH_CGROUP = 1ULL << 9,
KDBUS_ATTACH_CAPS = 1ULL << 10,
KDBUS_ATTACH_SECLABEL = 1ULL << 11,
KDBUS_ATTACH_AUDIT = 1ULL << 12,
KDBUS_ATTACH_CONN_DESCRIPTION = 1ULL << 13,
_KDBUS_ATTACH_ALL = (1ULL << 14) - 1,
_KDBUS_ATTACH_ANY = ~0ULL
};
/**
* enum kdbus_item_type - item types to chain data in a list
* @_KDBUS_ITEM_NULL: Uninitialized/invalid
* @_KDBUS_ITEM_USER_BASE: Start of user items
* @KDBUS_ITEM_NEGOTIATE: Negotiate supported items
* @KDBUS_ITEM_PAYLOAD_VEC: Vector to data
* @KDBUS_ITEM_PAYLOAD_OFF: Data at returned offset to message head
* @KDBUS_ITEM_PAYLOAD_MEMFD: Data as sealed memfd
@@ -291,7 +359,8 @@ struct kdbus_policy_access {
enum kdbus_item_type {
_KDBUS_ITEM_NULL,
_KDBUS_ITEM_USER_BASE,
KDBUS_ITEM_PAYLOAD_VEC = _KDBUS_ITEM_USER_BASE,
KDBUS_ITEM_NEGOTIATE = _KDBUS_ITEM_USER_BASE,
KDBUS_ITEM_PAYLOAD_VEC,
KDBUS_ITEM_PAYLOAD_OFF,
KDBUS_ITEM_PAYLOAD_MEMFD,
KDBUS_ITEM_FDS,
@@ -385,7 +454,7 @@ struct kdbus_item {
struct kdbus_notify_id_change id_change;
struct kdbus_policy_access policy_access;
};
};
} __attribute__((__aligned__(8)));
/**
* struct kdbus_item_list - A list of items
@@ -395,7 +464,7 @@ struct kdbus_item {
struct kdbus_item_list {
__u64 size;
struct kdbus_item items[0];
};
} __attribute__((__aligned__(8)));
/**
* enum kdbus_msg_flags - type of message
@@ -460,7 +529,7 @@ struct kdbus_msg {
__u64 cookie_reply;
};
struct kdbus_item items[0];
} __attribute__((aligned(8)));
} __attribute__((__aligned__(8)));
/**
* struct kdbus_msg_info - returned message container
@@ -472,7 +541,7 @@ struct kdbus_msg_info {
__u64 offset;
__u64 msg_size;
__u64 return_flags;
};
} __attribute__((__aligned__(8)));
/**
* enum kdbus_send_flags - flags for sending messages
@@ -494,8 +563,6 @@ enum kdbus_send_flags {
* struct kdbus_cmd_send - send message
* @size: Overall size of this structure
* @flags: Flags to change send behavior (KDBUS_SEND_*)
* @kernel_flags: Supported send flags, kernel → userspace
* @kernel_msg_flags: Supported message flags, kernel → userspace
* @return_flags: Command return flags, kernel → userspace
* @msg_address: Storage address of the kdbus_msg to send
* @reply: Storage for message reply if KDBUS_SEND_SYNC_REPLY
@@ -505,13 +572,11 @@ enum kdbus_send_flags {
struct kdbus_cmd_send {
__u64 size;
__u64 flags;
__u64 kernel_flags;
__u64 kernel_msg_flags;
__u64 return_flags;
__u64 msg_address;
struct kdbus_msg_info reply;
struct kdbus_item items[0];
} __attribute__((aligned(8)));
} __attribute__((__aligned__(8)));
/**
* enum kdbus_recv_flags - flags for de-queuing messages
@@ -546,7 +611,6 @@ enum kdbus_recv_return_flags {
* struct kdbus_cmd_recv - struct to de-queue a buffered message
* @size: Overall size of this object
* @flags: KDBUS_RECV_* flags, userspace → kernel
* @kernel_flags: Supported KDBUS_RECV_* flags, kernel → userspace
* @return_flags: Command return flags, kernel → userspace
* @priority: Minimum priority of the messages to de-queue. Lowest
* values have the highest priority.
@@ -554,7 +618,7 @@ enum kdbus_recv_return_flags {
* -EOVERFLOW, this field will contain the number of
* broadcast messages that have been lost since the
* last call.
* @reply: Return storage for received message.
* @msg: Return storage for received message.
* @items: Additional items for this command.
*
* This struct is used with the KDBUS_CMD_RECV ioctl.
@@ -562,62 +626,31 @@ enum kdbus_recv_return_flags {
struct kdbus_cmd_recv {
__u64 size;
__u64 flags;
__u64 kernel_flags;
__u64 return_flags;
__s64 priority;
__u64 dropped_msgs;
struct kdbus_msg_info msg;
struct kdbus_item items[0];
} __attribute__((aligned(8)));
} __attribute__((__aligned__(8)));
/**
* struct kdbus_cmd_free - struct to free a slice of memory in the pool
* @size: Overall size of this structure
* @offset: The offset of the memory slice, as returned by other
* ioctls
* @flags: Flags for the free command, userspace → kernel
* @return_flags: Command return flags, kernel → userspace
* @kernel_flags: Supported flags of the free command, userspace → kernel
* @offset: The offset of the memory slice, as returned by other
* ioctls
* @items: Additional items to modify the behavior
*
* This struct is used with the KDBUS_CMD_FREE ioctl.
*/
struct kdbus_cmd_free {
__u64 size;
__u64 offset;
__u64 flags;
__u64 kernel_flags;
__u64 return_flags;
__u64 offset;
struct kdbus_item items[0];
} __attribute__((aligned(8)));
/**
* enum kdbus_policy_access_type - permissions of a policy record
* @_KDBUS_POLICY_ACCESS_NULL: Uninitialized/invalid
* @KDBUS_POLICY_ACCESS_USER: Grant access to a uid
* @KDBUS_POLICY_ACCESS_GROUP: Grant access to gid
* @KDBUS_POLICY_ACCESS_WORLD: World-accessible
*/
enum kdbus_policy_access_type {
_KDBUS_POLICY_ACCESS_NULL,
KDBUS_POLICY_ACCESS_USER,
KDBUS_POLICY_ACCESS_GROUP,
KDBUS_POLICY_ACCESS_WORLD,
};
/**
* enum kdbus_policy_access_flags - mode flags
* @KDBUS_POLICY_OWN: Allow to own a well-known name
* Implies KDBUS_POLICY_TALK and KDBUS_POLICY_SEE
* @KDBUS_POLICY_TALK: Allow communication to a well-known name
* Implies KDBUS_POLICY_SEE
* @KDBUS_POLICY_SEE: Allow to see a well-known name
*/
enum kdbus_policy_type {
KDBUS_POLICY_SEE = 0,
KDBUS_POLICY_TALK,
KDBUS_POLICY_OWN,
};
} __attribute__((__aligned__(8)));
/**
* enum kdbus_hello_flags - flags for struct kdbus_cmd_hello
@@ -642,50 +675,10 @@ enum kdbus_hello_flags {
KDBUS_HELLO_MONITOR = 1ULL << 3,
};
/**
* enum kdbus_attach_flags - flags for metadata attachments
* @KDBUS_ATTACH_TIMESTAMP: Timestamp
* @KDBUS_ATTACH_CREDS: Credentials
* @KDBUS_ATTACH_PIDS: PIDs
* @KDBUS_ATTACH_AUXGROUPS: Auxiliary groups
* @KDBUS_ATTACH_NAMES: Well-known names
* @KDBUS_ATTACH_TID_COMM: The "comm" process identifier of the TID
* @KDBUS_ATTACH_PID_COMM: The "comm" process identifier of the PID
* @KDBUS_ATTACH_EXE: The path of the executable
* @KDBUS_ATTACH_CMDLINE: The process command line
* @KDBUS_ATTACH_CGROUP: The croup membership
* @KDBUS_ATTACH_CAPS: The process capabilities
* @KDBUS_ATTACH_SECLABEL: The security label
* @KDBUS_ATTACH_AUDIT: The audit IDs
* @KDBUS_ATTACH_CONN_DESCRIPTION: The human-readable connection name
* @_KDBUS_ATTACH_ALL: All of the above
* @_KDBUS_ATTACH_ANY: Wildcard match to enable any kind of
* metatdata.
*/
enum kdbus_attach_flags {
KDBUS_ATTACH_TIMESTAMP = 1ULL << 0,
KDBUS_ATTACH_CREDS = 1ULL << 1,
KDBUS_ATTACH_PIDS = 1ULL << 2,
KDBUS_ATTACH_AUXGROUPS = 1ULL << 3,
KDBUS_ATTACH_NAMES = 1ULL << 4,
KDBUS_ATTACH_TID_COMM = 1ULL << 5,
KDBUS_ATTACH_PID_COMM = 1ULL << 6,
KDBUS_ATTACH_EXE = 1ULL << 7,
KDBUS_ATTACH_CMDLINE = 1ULL << 8,
KDBUS_ATTACH_CGROUP = 1ULL << 9,
KDBUS_ATTACH_CAPS = 1ULL << 10,
KDBUS_ATTACH_SECLABEL = 1ULL << 11,
KDBUS_ATTACH_AUDIT = 1ULL << 12,
KDBUS_ATTACH_CONN_DESCRIPTION = 1ULL << 13,
_KDBUS_ATTACH_ALL = (1ULL << 14) - 1,
_KDBUS_ATTACH_ANY = ~0ULL
};
/**
* struct kdbus_cmd_hello - struct to say hello to kdbus
* @size: The total size of the structure
* @flags: Connection flags (KDBUS_HELLO_*), userspace → kernel
* @kernel_flags: Supported connection flags, kernel → userspace
* @return_flags: Command return flags, kernel → userspace
* @attach_flags_send: Mask of metadata to attach to each message sent
* off by this connection (KDBUS_ATTACH_*)
@@ -710,7 +703,6 @@ enum kdbus_attach_flags {
struct kdbus_cmd_hello {
__u64 size;
__u64 flags;
__u64 kernel_flags;
__u64 return_flags;
__u64 attach_flags_send;
__u64 attach_flags_recv;
@@ -721,149 +713,14 @@ struct kdbus_cmd_hello {
__u64 items_size;
__u8 id128[16];
struct kdbus_item items[0];
} __attribute__((aligned(8)));
} __attribute__((__aligned__(8)));
/**
* enum kdbus_make_flags - Flags for KDBUS_CMD_{BUS,EP,NS}_MAKE
* @KDBUS_MAKE_ACCESS_GROUP: Make the bus or endpoint node group-accessible
* @KDBUS_MAKE_ACCESS_WORLD: Make the bus or endpoint node world-accessible
*/
enum kdbus_make_flags {
KDBUS_MAKE_ACCESS_GROUP = 1ULL << 0,
KDBUS_MAKE_ACCESS_WORLD = 1ULL << 1,
};
/**
* struct kdbus_cmd_make - struct to make a bus, an endpoint or a domain
* @size: The total size of the struct
* @flags: Properties for the bus/ep/domain to create,
* userspace → kernel
* @kernel_flags: Supported flags for the used command, kernel → userspace
* @return_flags: Command return flags, kernel → userspace
* @items: Items describing details
*
* This structure is used with the KDBUS_CMD_BUS_MAKE and
* KDBUS_CMD_ENDPOINT_MAKE ioctls.
*/
struct kdbus_cmd_make {
__u64 size;
__u64 flags;
__u64 kernel_flags;
__u64 return_flags;
struct kdbus_item items[0];
} __attribute__((aligned(8)));
/**
* enum kdbus_name_flags - properties of a well-known name
* @KDBUS_NAME_REPLACE_EXISTING: Try to replace name of other connections
* @KDBUS_NAME_ALLOW_REPLACEMENT: Allow the replacement of the name
* @KDBUS_NAME_QUEUE: Name should be queued if busy
* @KDBUS_NAME_IN_QUEUE: Name is queued
* @KDBUS_NAME_ACTIVATOR: Name is owned by a activator connection
*/
enum kdbus_name_flags {
KDBUS_NAME_REPLACE_EXISTING = 1ULL << 0,
KDBUS_NAME_ALLOW_REPLACEMENT = 1ULL << 1,
KDBUS_NAME_QUEUE = 1ULL << 2,
KDBUS_NAME_IN_QUEUE = 1ULL << 3,
KDBUS_NAME_ACTIVATOR = 1ULL << 4,
};
/**
* struct kdbus_cmd_name - struct to describe a well-known name
* @size: The total size of the struct
* @flags: Flags for a name entry (KDBUS_NAME_*),
* userspace → kernel, kernel → userspace
* @kernel_flags: Supported flags for a name entry, kernel → userspace
* @return_flags: Command return flags, kernel → userspace
* @items: Item list, containing the well-known name as
* KDBUS_ITEM_NAME
*
* This structure is used with the KDBUS_CMD_NAME_ACQUIRE ioctl.
*/
struct kdbus_cmd_name {
__u64 size;
__u64 flags;
__u64 kernel_flags;
__u64 return_flags;
struct kdbus_item items[0];
} __attribute__((aligned(8)));
/**
* struct kdbus_name_info - struct to describe a well-known name
* @size: The total size of the struct
* @conn_flags: The flags of the owning connection (KDBUS_HELLO_*)
* @owner_id: The current owner of the name
* @items: Item list, containing the well-known name as
* KDBUS_ITEM_OWNED_NAME
*
* This structure is used as return struct for the KDBUS_CMD_NAME_LIST ioctl.
*/
struct kdbus_name_info {
__u64 size;
__u64 conn_flags;
__u64 owner_id;
struct kdbus_item items[0];
} __attribute__((aligned(8)));
/**
* struct kdbus_name_list - information returned by KDBUS_CMD_NAME_LIST
* @size: The total size of the structure
* @names: A list of names
*
* Note that the user is responsible for freeing the allocated memory with
* the KDBUS_CMD_FREE ioctl.
*/
struct kdbus_name_list {
__u64 size;
struct kdbus_name_info names[0];
};
/**
* enum kdbus_name_list_flags - what to include into the returned list
* @KDBUS_NAME_LIST_UNIQUE: All active connections
* @KDBUS_NAME_LIST_NAMES: All known well-known names
* @KDBUS_NAME_LIST_ACTIVATORS: All activator connections
* @KDBUS_NAME_LIST_QUEUED: All queued-up names
*/
enum kdbus_name_list_flags {
KDBUS_NAME_LIST_UNIQUE = 1ULL << 0,
KDBUS_NAME_LIST_NAMES = 1ULL << 1,
KDBUS_NAME_LIST_ACTIVATORS = 1ULL << 2,
KDBUS_NAME_LIST_QUEUED = 1ULL << 3,
};
/**
* struct kdbus_cmd_name_list - request a list of name entries
* @flags: Flags for the query (KDBUS_NAME_LIST_*),
* userspace → kernel
* @kernel_flags: Supported flags for queries, kernel → userspace
* @return_flags: Command return flags, kernel → userspace
* @offset: The returned offset in the caller's pool buffer.
* The user must use KDBUS_CMD_FREE to free the
* allocated memory.
* @list_size: Returned size of list in bytes
* @size: Output buffer to report size of data at @offset.
* @items: Items for the command. Reserved for future use.
*
* This structure is used with the KDBUS_CMD_NAME_LIST ioctl.
*/
struct kdbus_cmd_name_list {
__u64 size;
__u64 flags;
__u64 kernel_flags;
__u64 return_flags;
__u64 offset;
__u64 list_size;
struct kdbus_item items[0];
} __attribute__((aligned(8)));
/**
* struct kdbus_info - information returned by KDBUS_CMD_*_INFO
* @size: The total size of the struct
* @id: The connection's or bus' 64-bit ID
* @flags: The connection's or bus' flags
* @items: A list of struct kdbus_item
* struct kdbus_info - connection information
* @size: total size of the struct
* @id: 64bit object ID
* @flags: object creation flags
* @items: list of items
*
* Note that the user is responsible for freeing the allocated memory with
* the KDBUS_CMD_FREE ioctl.
@@ -873,13 +730,49 @@ struct kdbus_info {
__u64 id;
__u64 flags;
struct kdbus_item items[0];
} __attribute__((__aligned__(8)));
/**
* enum kdbus_list_flags - what to include into the returned list
* @KDBUS_LIST_UNIQUE: active connections
* @KDBUS_LIST_ACTIVATORS: activator connections
* @KDBUS_LIST_NAMES: known well-known names
* @KDBUS_LIST_QUEUED: queued-up names
*/
enum kdbus_list_flags {
KDBUS_LIST_UNIQUE = 1ULL << 0,
KDBUS_LIST_NAMES = 1ULL << 1,
KDBUS_LIST_ACTIVATORS = 1ULL << 2,
KDBUS_LIST_QUEUED = 1ULL << 3,
};
/**
* struct kdbus_cmd_list - list connections
* @size: overall size of this object
* @flags: flags for the query (KDBUS_LIST_*), userspace → kernel
* @return_flags: command return flags, kernel → userspace
* @offset: Offset in the caller's pool buffer where an array of
* kdbus_info objects is stored.
* The user must use KDBUS_CMD_FREE to free the
* allocated memory.
* @list_size: size of returned list in bytes
* @items: Items for the command. Reserved for future use.
*
* This structure is used with the KDBUS_CMD_LIST ioctl.
*/
struct kdbus_cmd_list {
__u64 size;
__u64 flags;
__u64 return_flags;
__u64 offset;
__u64 list_size;
struct kdbus_item items[0];
} __attribute__((__aligned__(8)));
/**
* struct kdbus_cmd_info - struct used for KDBUS_CMD_CONN_INFO ioctl
* @size: The total size of the struct
* @flags: KDBUS_ATTACH_* flags, userspace → kernel
* @kernel_flags: Supported KDBUS_ATTACH_* flags, kernel → userspace
* @return_flags: Command return flags, kernel → userspace
* @id: The 64-bit ID of the connection. If set to zero, passing
* @name is required. kdbus will look up the name to
@@ -899,31 +792,12 @@ struct kdbus_info {
struct kdbus_cmd_info {
__u64 size;
__u64 flags;
__u64 kernel_flags;
__u64 return_flags;
__u64 id;
__u64 offset;
__u64 info_size;
struct kdbus_item items[0];
} __attribute__((aligned(8)));
/**
* struct kdbus_cmd_update - update flags of a connection
* @size: The total size of the struct
* @flags: Flags for the update command, userspace → kernel
* @kernel_flags: Supported flags for this command, kernel → userspace
* @return_flags: Command return flags, kernel → userspace
* @items: A list of struct kdbus_item
*
* This struct is used with the KDBUS_CMD_CONN_UPDATE ioctl.
*/
struct kdbus_cmd_update {
__u64 size;
__u64 flags;
__u64 kernel_flags;
__u64 return_flags;
struct kdbus_item items[0];
} __attribute__((aligned(8)));
} __attribute__((__aligned__(8)));
/**
* enum kdbus_cmd_match_flags - flags to control the KDBUS_CMD_MATCH_ADD ioctl
@@ -938,12 +812,11 @@ enum kdbus_cmd_match_flags {
/**
* struct kdbus_cmd_match - struct to add or remove matches
* @size: The total size of the struct
* @cookie: Userspace supplied cookie. When removing, the cookie
* identifies the match to remove
* @flags: Flags for match command (KDBUS_MATCH_*),
* userspace → kernel
* @kernel_flags: Supported flags of the used command, kernel → userspace
* @return_flags: Command return flags, kernel → userspace
* @cookie: Userspace supplied cookie. When removing, the cookie
* identifies the match to remove
* @items: A list of items for additional information
*
* This structure is used with the KDBUS_CMD_MATCH_ADD and
@@ -951,98 +824,149 @@ enum kdbus_cmd_match_flags {
*/
struct kdbus_cmd_match {
__u64 size;
__u64 cookie;
__u64 flags;
__u64 kernel_flags;
__u64 return_flags;
__u64 cookie;
struct kdbus_item items[0];
} __attribute__((__aligned__(8)));
/**
* enum kdbus_make_flags - Flags for KDBUS_CMD_{BUS,ENDPOINT}_MAKE
* @KDBUS_MAKE_ACCESS_GROUP: Make the bus or endpoint node group-accessible
* @KDBUS_MAKE_ACCESS_WORLD: Make the bus or endpoint node world-accessible
*/
enum kdbus_make_flags {
KDBUS_MAKE_ACCESS_GROUP = 1ULL << 0,
KDBUS_MAKE_ACCESS_WORLD = 1ULL << 1,
};
/**
* enum kdbus_name_flags - flags for KDBUS_CMD_NAME_ACQUIRE
* @KDBUS_NAME_REPLACE_EXISTING: Try to replace name of other connections
* @KDBUS_NAME_ALLOW_REPLACEMENT: Allow the replacement of the name
* @KDBUS_NAME_QUEUE: Name should be queued if busy
* @KDBUS_NAME_IN_QUEUE: Name is queued
* @KDBUS_NAME_ACTIVATOR: Name is owned by a activator connection
*/
enum kdbus_name_flags {
KDBUS_NAME_REPLACE_EXISTING = 1ULL << 0,
KDBUS_NAME_ALLOW_REPLACEMENT = 1ULL << 1,
KDBUS_NAME_QUEUE = 1ULL << 2,
KDBUS_NAME_IN_QUEUE = 1ULL << 3,
KDBUS_NAME_ACTIVATOR = 1ULL << 4,
};
/**
* struct kdbus_cmd - generic ioctl payload
* @size: Overall size of this structure
* @flags: Flags for this ioctl, userspace → kernel
* @return_flags: Ioctl return flags, kernel → userspace
* @items: Additional items to modify the behavior
*
* This is a generic ioctl payload object. It's used by all ioctls that only
* take flags and items as input.
*/
struct kdbus_cmd {
__u64 size;
__u64 flags;
__u64 return_flags;
struct kdbus_item items[0];
} __attribute__((aligned(8)));
} __attribute__((__aligned__(8)));
/**
* Ioctl API
*
* KDBUS_CMD_BUS_MAKE: After opening the "control" node, this command
* creates a new bus with the specified
* name. The bus is immediately shut down and
* cleaned up when the opened file descriptor is
* closed.
*
* 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.
* KDBUS_CMD_ENDPOINT_UPDATE: Update the properties of a custom enpoint. Used
* to update the policy.
*
* KDBUS_CMD_HELLO: By opening the bus node, a connection is
* created. After a HELLO the opened connection
* becomes an active peer on the bus.
* KDBUS_CMD_UPDATE: Update the properties of a connection. Used to
* update the metadata subscription mask and
* policy.
* KDBUS_CMD_BYEBYE: Disconnect a connection. If there are no
* messages queued up in the connection's pool,
* the call succeeds, and the handle is rendered
* unusable. Otherwise, -EBUSY is returned without
* any further side-effects.
* KDBUS_CMD_SEND: Send a message and pass data from userspace to
* the kernel.
* KDBUS_CMD_RECV: Receive a message from the kernel which is
* placed in the receiver's pool.
* KDBUS_CMD_FREE: Release the allocated memory in the receiver's
* pool.
* KDBUS_CMD_NAME_ACQUIRE: Request a well-known bus name to associate with
* the connection. Well-known names are used to
* address a peer on the bus.
* KDBUS_CMD_NAME_RELEASE: Release a well-known name the connection
* currently owns.
* KDBUS_CMD_NAME_LIST: Retrieve the list of all currently registered
* well-known and unique names.
* KDBUS_CMD_CONN_INFO: Retrieve credentials and properties of the
* initial creator of the connection. The data was
* stored at registration time and does not
* necessarily represent the connected process or
* the actual state of the process.
* KDBUS_CMD_CONN_UPDATE: Update the properties of a connection. Used to
* update the metadata subscription mask and
* policy.
* KDBUS_CMD_BUS_CREATOR_INFO: Retrieve information of the creator of the bus
* a connection is attached to.
* KDBUS_CMD_ENDPOINT_UPDATE: Update the properties of a custom enpoint. Used
* to update the policy.
*
* KDBUS_CMD_SEND: Send a message and pass data from userspace to
* the kernel.
* KDBUS_CMD_RECV: Receive a message from the kernel which is
* placed in the receiver's pool.
*
* KDBUS_CMD_NAME_ACQUIRE: Request a well-known bus name to associate with
* the connection. Well-known names are used to
* address a peer on the bus.
* KDBUS_CMD_NAME_RELEASE: Release a well-known name the connection
* currently owns.
* KDBUS_CMD_LIST: Retrieve the list of all currently registered
* well-known and unique names.
*
* KDBUS_CMD_MATCH_ADD: Install a match which broadcast messages should
* be delivered to the connection.
* KDBUS_CMD_MATCH_REMOVE: Remove a current match for broadcast messages.
*/
enum kdbus_ioctl_type {
/* bus owner (00-0f) */
KDBUS_CMD_BUS_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x00,
struct kdbus_cmd_make),
struct kdbus_cmd),
/* endpoint owner (10-1f) */
KDBUS_CMD_ENDPOINT_MAKE = _IOW(KDBUS_IOCTL_MAGIC, 0x10,
struct kdbus_cmd_make),
struct kdbus_cmd),
KDBUS_CMD_ENDPOINT_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x11,
struct kdbus_cmd),
KDBUS_CMD_HELLO = _IOWR(KDBUS_IOCTL_MAGIC, 0x20,
/* connection owner (80-ff) */
KDBUS_CMD_HELLO = _IOWR(KDBUS_IOCTL_MAGIC, 0x80,
struct kdbus_cmd_hello),
KDBUS_CMD_BYEBYE = _IO(KDBUS_IOCTL_MAGIC, 0x21),
KDBUS_CMD_SEND = _IOWR(KDBUS_IOCTL_MAGIC, 0x30,
struct kdbus_cmd_send),
KDBUS_CMD_RECV = _IOWR(KDBUS_IOCTL_MAGIC, 0x31,
struct kdbus_cmd_recv),
KDBUS_CMD_FREE = _IOW(KDBUS_IOCTL_MAGIC, 0x32,
KDBUS_CMD_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x81,
struct kdbus_cmd),
KDBUS_CMD_BYEBYE = _IOW(KDBUS_IOCTL_MAGIC, 0x82,
struct kdbus_cmd),
KDBUS_CMD_FREE = _IOW(KDBUS_IOCTL_MAGIC, 0x83,
struct kdbus_cmd_free),
KDBUS_CMD_CONN_INFO = _IOR(KDBUS_IOCTL_MAGIC, 0x84,
struct kdbus_cmd_info),
KDBUS_CMD_BUS_CREATOR_INFO = _IOR(KDBUS_IOCTL_MAGIC, 0x85,
struct kdbus_cmd_info),
KDBUS_CMD_LIST = _IOR(KDBUS_IOCTL_MAGIC, 0x86,
struct kdbus_cmd_list),
KDBUS_CMD_NAME_ACQUIRE = _IOWR(KDBUS_IOCTL_MAGIC, 0x40,
struct kdbus_cmd_name),
KDBUS_CMD_NAME_RELEASE = _IOW(KDBUS_IOCTL_MAGIC, 0x41,
struct kdbus_cmd_name),
KDBUS_CMD_NAME_LIST = _IOWR(KDBUS_IOCTL_MAGIC, 0x42,
struct kdbus_cmd_name_list),
KDBUS_CMD_SEND = _IOW(KDBUS_IOCTL_MAGIC, 0x90,
struct kdbus_cmd_send),
KDBUS_CMD_RECV = _IOR(KDBUS_IOCTL_MAGIC, 0x91,
struct kdbus_cmd_recv),
KDBUS_CMD_CONN_INFO = _IOWR(KDBUS_IOCTL_MAGIC, 0x50,
struct kdbus_cmd_info),
KDBUS_CMD_CONN_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x51,
struct kdbus_cmd_update),
KDBUS_CMD_BUS_CREATOR_INFO = _IOWR(KDBUS_IOCTL_MAGIC, 0x52,
struct kdbus_cmd_info),
KDBUS_CMD_NAME_ACQUIRE = _IOW(KDBUS_IOCTL_MAGIC, 0xa0,
struct kdbus_cmd),
KDBUS_CMD_NAME_RELEASE = _IOW(KDBUS_IOCTL_MAGIC, 0xa1,
struct kdbus_cmd),
KDBUS_CMD_ENDPOINT_UPDATE = _IOW(KDBUS_IOCTL_MAGIC, 0x61,
struct kdbus_cmd_update),
KDBUS_CMD_MATCH_ADD = _IOW(KDBUS_IOCTL_MAGIC, 0x70,
KDBUS_CMD_MATCH_ADD = _IOW(KDBUS_IOCTL_MAGIC, 0xb0,
struct kdbus_cmd_match),
KDBUS_CMD_MATCH_REMOVE = _IOW(KDBUS_IOCTL_MAGIC, 0x71,
KDBUS_CMD_MATCH_REMOVE = _IOW(KDBUS_IOCTL_MAGIC, 0xb1,
struct kdbus_cmd_match),
};