bus: add new sd_bus_creds object to encapsulate process credentials

This way we can unify handling of credentials that are attached to
messages, or can be queried for bus name owners or connection peers.

This also adds the ability to extend incomplete credential information
with data from /proc,

Also, provide a convenience call that will automatically determine the
most appropriate credential object for an incoming message, by using the
the attached information if possible, the sending name information if
available and otherwise the peer's credentials.

1 files changed, 3 insertions, 27 deletions

diff --git a/src/libsystemd-bus/bus-message.h b/src/libsystemd-bus/bus-message.h
index 8c0ba86213..72a79f792b 100644
--- a/src/libsystemd-bus/bus-message.h
+++ b/src/libsystemd-bus/bus-message.h
@@ -29,6 +29,7 @@
 #include "sd-bus.h"
 #include "kdbus.h"
 #include "time-util.h"
+#include "bus-creds.h"
 
 struct bus_container {
         char enclosing;
@@ -78,19 +79,14 @@ 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 +98,6 @@ 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;
@@ -126,24 +120,6 @@ struct sd_bus_message {
 
         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;
 };
 
 #define BUS_MESSAGE_NEED_BSWAP(m) ((m)->header->endian != SD_BUS_NATIVE_ENDIAN)