chiark / gitweb /
bus: always pass valid timeout to kdbus
[elogind.git] / src / libsystemd-bus / bus-message.h
index b21fdf0..b9cd4c8 100644 (file)
 
 #include "macro.h"
 #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;
-        unsigned index;
 
+        size_t before, begin, end;
+
+        /* dbus1: pointer to the array size value, if this is a value */
         uint32_t *array_size;
-        size_t begin;
+
+        /* gvariant: list of offsets to end of children if this is struct/dict entry/array */
+        size_t *offsets, n_offsets, n_offsets_allocated, offset_index;
+        size_t item_size;
 };
 
-_packed_ struct bus_header {
+struct bus_header {
         uint8_t endian;
         uint8_t type;
         uint8_t flags;
@@ -46,11 +58,25 @@ _packed_ struct bus_header {
         uint32_t body_size;
         uint32_t serial;
         uint32_t fields_size;
+} _packed_;
+
+struct bus_body_part {
+        struct bus_body_part *next;
+        void *data;
+        size_t size;
+        size_t mapped;
+        int memfd;
+        bool free_this:1;
+        bool munmap_this:1;
+        bool sealed:1;
+        bool is_zero:1;
 };
 
 struct sd_bus_message {
         unsigned n_ref;
 
+        sd_bus *bus;
+
         uint32_t reply_serial;
 
         const char *path;
@@ -61,26 +87,28 @@ struct sd_bus_message {
 
         sd_bus_error error;
 
-        uid_t uid;
-        gid_t gid;
-        pid_t pid;
-        pid_t tid;
+        sd_bus_creds creds;
+
+        usec_t monotonic;
+        usec_t realtime;
 
         bool sealed:1;
-        bool uid_valid:1;
-        bool gid_valid:1;
-        bool free_header:1;
-        bool free_fields:1;
-        bool free_body:1;
         bool dont_send:1;
+        bool allow_fds:1;
+        bool free_header:1;
+        bool free_kdbus:1;
+        bool free_fds:1;
+        bool release_kdbus:1;
+        bool poisoned:1;
 
         struct bus_header *header;
-        void *fields;
-        void *body;
-
-        char *label;
+        struct bus_body_part body;
+        struct bus_body_part *body_end;
+        unsigned n_body_parts;
 
         size_t rindex;
+        struct bus_body_part *cached_rindex_part;
+        size_t cached_rindex_part_begin;
 
         uint32_t n_fds;
         int *fds;
@@ -88,14 +116,29 @@ struct sd_bus_message {
         struct bus_container root_container, *containers;
         unsigned n_containers;
 
-        struct iovec iovec[4];
+        struct iovec *iovec;
+        struct iovec iovec_fixed[2];
         unsigned n_iovec;
-        size_t size;
+
+        struct kdbus_msg *kdbus;
 
         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];
+
+        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;
@@ -121,14 +164,69 @@ static inline uint32_t BUS_MESSAGE_FIELDS_SIZE(sd_bus_message *m) {
         return BUS_MESSAGE_BSWAP32(m, m->header->fields_size);
 }
 
-static inline void bus_message_unrefp(sd_bus_message **m) {
-        sd_bus_message_unref(*m);
+static inline uint32_t BUS_MESSAGE_SIZE(sd_bus_message *m) {
+        return
+                sizeof(struct bus_header) +
+                ALIGN8(BUS_MESSAGE_FIELDS_SIZE(m)) +
+                BUS_MESSAGE_BODY_SIZE(m);
 }
 
-#define _cleanup_bus_message_unref_ __attribute__((cleanup(bus_message_unrefp)))
+static inline uint32_t BUS_MESSAGE_BODY_BEGIN(sd_bus_message *m) {
+        return
+                sizeof(struct bus_header) +
+                ALIGN8(BUS_MESSAGE_FIELDS_SIZE(m));
+}
+
+static inline void* BUS_MESSAGE_FIELDS(sd_bus_message *m) {
+        return (uint8_t*) m->header + sizeof(struct bus_header);
+}
+
+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);
-int bus_message_dump(sd_bus_message *m);
+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_from_malloc(void *buffer, size_t length, struct ucred *ucred, const char *label, sd_bus_message **ret);
 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,
+                unsigned n_fds,
+                const struct ucred *ucred,
+                const char *label,
+                size_t extra,
+                sd_bus_message **ret);
+
+int bus_message_from_malloc(
+                sd_bus *bus,
+                void *buffer,
+                size_t length,
+                int *fds,
+                unsigned n_fds,
+                const struct ucred *ucred,
+                const char *label,
+                sd_bus_message **ret);
+
+const char* bus_message_get_arg(sd_bus_message *m, unsigned i);
+
+int bus_message_append_ap(sd_bus_message *m, const char *types, va_list ap);
+
+int bus_message_parse_fields(sd_bus_message *m);
+
+bool bus_header_is_complete(struct bus_header *h, size_t size);
+int bus_header_message_size(struct bus_header *h, size_t *sum);
+
+struct bus_body_part *message_append_part(sd_bus_message *m);
+
+#define MESSAGE_FOREACH_PART(part, i, m) \
+        for ((i) = 0, (part) = &(m)->body; (i) < (m)->n_body_parts; (i)++, (part) = (part)->next)
+
+int bus_body_part_map(struct bus_body_part *part);
+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);