diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/libsystemd/sd-bus/bus-kernel.c | 32 |
1 files changed, 23 insertions, 9 deletions
diff --git a/src/libsystemd/sd-bus/bus-kernel.c b/src/libsystemd/sd-bus/bus-kernel.c index d0cb7eec1b..aa4b4240dc 100644 --- a/src/libsystemd/sd-bus/bus-kernel.c +++ b/src/libsystemd/sd-bus/bus-kernel.c @@ -1377,6 +1377,7 @@ 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_item *n; + size_t l; int fd; assert(name); @@ -1386,19 +1387,20 @@ int bus_kernel_create_bus(const char *name, bool world, char **s) { if (fd < 0) return -errno; - make = alloca0_align(ALIGN8(offsetof(struct kdbus_cmd_make, items) + - offsetof(struct kdbus_item, data64) + sizeof(uint64_t) + - offsetof(struct kdbus_item, str) + - DECIMAL_STR_MAX(uid_t) + 1 + strlen(name) + 1), + l = strlen(name); + make = alloca0_align(offsetof(struct kdbus_cmd_make, 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, str) + DECIMAL_STR_MAX(uid_t) + 1 + l + 1), 8); make->size = offsetof(struct kdbus_cmd_make, items); + /* Set the bloom parameters */ n = make->items; n->size = offsetof(struct kdbus_item, bloom_parameter) + sizeof(struct kdbus_bloom_parameter); n->type = KDBUS_ITEM_BLOOM_PARAMETER; - n->bloom_parameter.size = DEFAULT_BLOOM_SIZE; n->bloom_parameter.n_hash = DEFAULT_BLOOM_N_HASH; @@ -1407,6 +1409,15 @@ int bus_kernel_create_bus(const char *name, bool world, char **s) { make->size += ALIGN8(n->size); + /* The busses we create make no restrictions on what metadata + * peers can read from incoming messages. */ + n = KDBUS_ITEM_NEXT(n); + n->type = KDBUS_ITEM_ATTACH_FLAGS_RECV; + n->size = offsetof(struct kdbus_item, data64) + sizeof(uint64_t); + n->data64[0] = _KDBUS_ATTACH_ANY; + make->size += ALIGN8(n->size); + + /* Set the a good name */ n = KDBUS_ITEM_NEXT(n); sprintf(n->str, UID_FMT "-%s", getuid(), name); n->size = offsetof(struct kdbus_item, str) + strlen(n->str) + 1; @@ -1633,7 +1644,7 @@ int bus_kernel_make_starter( if (world_policy >= 0) policy_cnt++; - size = ALIGN8(offsetof(struct kdbus_cmd_hello, items)) + + size = offsetof(struct kdbus_cmd_hello, items) + ALIGN8(offsetof(struct kdbus_item, str) + strlen(name) + 1) + policy_cnt * ALIGN8(offsetof(struct kdbus_item, policy_access) + sizeof(struct kdbus_policy_access)); @@ -1715,15 +1726,18 @@ int bus_kernel_realize_attach_flags(sd_bus *bus) { assert(bus); assert(bus->is_kernel); - update = alloca0_align(ALIGN8(offsetof(struct kdbus_cmd_update, items) + - offsetof(struct kdbus_item, data64) + sizeof(uint64_t)), 8); + update = alloca0_align(offsetof(struct kdbus_cmd_update, items) + + ALIGN8(offsetof(struct kdbus_item, data64) + sizeof(uint64_t)), + 8); n = update->items; n->type = KDBUS_ITEM_ATTACH_FLAGS_RECV; n->size = offsetof(struct kdbus_item, data64) + sizeof(uint64_t); n->data64[0] = bus->attach_flags; - update->size = offsetof(struct kdbus_cmd_update, items) + n->size; + update->size = + offsetof(struct kdbus_cmd_update, items) + + ALIGN8(n->size); if (ioctl(bus->input_fd, KDBUS_CMD_CONN_UPDATE, update) < 0) return -errno; |