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bus: parse uid/gid/pid/tid meta data from kdbus messages

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This commit is contained in:
Lennart Poettering 2013-04-12 01:45:18 +02:00
parent e9a967f9a0
commit f9be01f3b4
3 changed files with 25 additions and 1 deletions
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13
src/libsystemd-bus/bus-kernel.c
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@ -224,6 +224,7 @@ static int bus_kernel_make_message(sd_bus *bus, struct kdbus_msg *k, sd_bus_mess
_cleanup_free_ int *fds = NULL;
struct bus_header *h = NULL;
size_t total, n_bytes = 0, idx = 0;
struct kdbus_creds *creds = NULL;
int r;
assert(bus);
@ -262,7 +263,9 @@ static int bus_kernel_make_message(sd_bus *bus, struct kdbus_msg *k, sd_bus_mess
fds = f;
memcpy(fds + n_fds, d->fds, j);
n_fds += j;
}
} else if (d->type == KDBUS_MSG_SRC_CREDS)
creds = &d->creds;
}
if (!h)
@ -301,6 +304,14 @@ static int bus_kernel_make_message(sd_bus *bus, struct kdbus_msg *k, sd_bus_mess
idx += l;
}
if (creds) {
m->uid = creds->uid;
m->gid = creds->gid;
m->pid = creds->pid;
m->tid = creds->tid;
m->uid_valid = m->gid_valid = true;
}
r = bus_message_parse_fields(m);
if (r < 0) {
sd_bus_message_unref(m);

10
src/libsystemd-bus/bus-message.c
View File

@ -2902,6 +2902,16 @@ int bus_message_dump(sd_bus_message *m) {
strna(m->error.message),
yes_no(m->sealed));
if (m->pid != 0)
printf("\tpid=%lu\n", (unsigned long) m->pid);
if (m->tid != 0)
printf("\ttid=%lu\n", (unsigned long) m->tid);
if (m->uid_valid)
printf("\tuid=%lu\n", (unsigned long) m->uid);
if (m->gid_valid)
printf("\tgid=%lu\n", (unsigned long) m->gid);
r = sd_bus_message_rewind(m, true);
if (r < 0) {
log_error("Failed to rewind: %s", strerror(-r));

3
src/libsystemd-bus/test-bus-kernel.c
View File

@ -75,6 +75,9 @@ int main(int argc, char *argv[]) {
assert_se(r > 0);
assert_se(m);
bus_message_dump(m);
assert_se(sd_bus_message_rewind(m, true) >= 0);
r = sd_bus_message_read(m, "s", &the_string);
assert_se(r >= 0);
assert_se(streq(the_string, "I am a string"));