bus: reduce calls to KDBUS_CMD_MEMFD_SIZE_SET ioctl

[elogind.git] / src / libsystemd-bus / bus-message.h

diff --git a/src/libsystemd-bus/bus-message.h b/src/libsystemd-bus/bus-message.h
index aec6f75857b7593fe7ee7856e930c563758d93e9..cd1fb0e546ff44217ff31846c03716554f5f5d7a 100644 (file)
--- a/src/libsystemd-bus/bus-message.h
+++ b/src/libsystemd-bus/bus-message.h
@@ -29,16 +29,25 @@
 #include "sd-bus.h"
 #include "kdbus.h"
 #include "time-util.h"
+#include "bus-creds.h"
+#include "bus-protocol.h"
 
 struct bus_container {
         char enclosing;
+        bool need_offsets:1;
 
+        /* Indexes into the signature  string */
         unsigned index, saved_index;
-
         char *signature;
 
+        size_t before, begin, end;
+
+        /* dbus1: pointer to the array size value, if this is a value */
         uint32_t *array_size;
-        size_t before, begin;
+
+        /* gvariant: list of offsets to end of children if this is struct/dict entry/array */
+        size_t *offsets, n_offsets, offsets_allocated, offset_index;
+        size_t item_size;
 };
 
 struct bus_header {
@@ -56,6 +65,7 @@ struct bus_body_part {
         void *data;
         size_t size;
         size_t mapped;
+        size_t allocated;
         int memfd;
         bool free_this:1;
         bool munmap_this:1;
@@ -78,19 +88,14 @@ struct sd_bus_message {
 
         sd_bus_error error;
 
-        uid_t uid;
-        gid_t gid;
-        pid_t pid;
-        pid_t tid;
-        usec_t pid_starttime;
+        sd_bus_creds creds;
+
         usec_t monotonic;
         usec_t realtime;
 
         bool sealed:1;
         bool dont_send:1;
         bool allow_fds:1;
-        bool uid_valid:1;
-        bool gid_valid:1;
         bool free_header:1;
         bool free_kdbus:1;
         bool free_fds:1;
@@ -102,8 +107,6 @@ struct sd_bus_message {
         struct bus_body_part *body_end;
         unsigned n_body_parts;
 
-        char *label;
-
         size_t rindex;
         struct bus_body_part *cached_rindex_part;
         size_t cached_rindex_part_begin;
@@ -113,6 +116,7 @@ struct sd_bus_message {
 
         struct bus_container root_container, *containers;
         unsigned n_containers;
+        size_t containers_allocated;
 
         struct iovec *iovec;
         struct iovec iovec_fixed[2];
@@ -122,31 +126,21 @@ struct sd_bus_message {
 
         char *peeked_signature;
 
+        /* If set replies to this message must carry the signature
+         * specified here to successfully seal. This is initialized
+         * from the vtable data */
+        const char *enforced_reply_signature;
+
         usec_t timeout;
 
         char sender_buffer[3 + DECIMAL_STR_MAX(uint64_t) + 1];
         char destination_buffer[3 + DECIMAL_STR_MAX(uint64_t) + 1];
 
-        const char *exe;
-        const char *comm;
-        const char *tid_comm;
-        const char *cgroup;
-
-        const char *cmdline;
-        size_t cmdline_length;
-        char **cmdline_array;
-
-        char *session;
-        char *unit;
-        char *user_unit;
-
-        struct kdbus_audit *audit;
-
-        uint8_t *capability;
-        size_t capability_size;
+        size_t header_offsets[_BUS_MESSAGE_HEADER_MAX];
+        unsigned n_header_offsets;
 };
 
-#define BUS_MESSAGE_NEED_BSWAP(m) ((m)->header->endian != SD_BUS_NATIVE_ENDIAN)
+#define BUS_MESSAGE_NEED_BSWAP(m) ((m)->header->endian != BUS_NATIVE_ENDIAN)
 
 static inline uint16_t BUS_MESSAGE_BSWAP16(sd_bus_message *m, uint16_t u) {
         return BUS_MESSAGE_NEED_BSWAP(m) ? bswap_16(u) : u;
@@ -189,11 +183,16 @@ static inline void* BUS_MESSAGE_FIELDS(sd_bus_message *m) {
         return (uint8_t*) m->header + sizeof(struct bus_header);
 }
 
-int bus_message_seal(sd_bus_message *m, uint64_t serial);
+static inline bool BUS_MESSAGE_IS_GVARIANT(sd_bus_message *m) {
+        return m->header->version == 2;
+}
+
+int bus_message_seal(sd_bus_message *m, uint64_t serial, usec_t timeout);
 int bus_message_get_blob(sd_bus_message *m, void **buffer, size_t *sz);
 int bus_message_read_strv_extend(sd_bus_message *m, char ***l);
 
 int bus_message_from_header(
+                sd_bus *bus,
                 void *header,
                 size_t length,
                 int *fds,
@@ -204,6 +203,7 @@ int bus_message_from_header(
                 sd_bus_message **ret);
 
 int bus_message_from_malloc(
+                sd_bus *bus,
                 void *buffer,
                 size_t length,
                 int *fds,
@@ -232,3 +232,5 @@ void bus_body_part_unmap(struct bus_body_part *part);
 int bus_message_to_errno(sd_bus_message *m);
 
 int bus_message_new_synthetic_error(sd_bus *bus, uint64_t serial, const sd_bus_error *e, sd_bus_message **m);
+
+int bus_message_remarshal(sd_bus *bus, sd_bus_message **m);