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manager: identify the init/system/user mode we are running it and pick D-Bus bus accordingly

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This commit is contained in:
Lennart Poettering 2010-02-12 21:57:39 +01:00
parent 7898b0cf7e
commit dfcd764ea6
3 changed files with 32 additions and 3 deletions
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2
dbus.c
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@ -378,7 +378,7 @@ int bus_init(Manager *m) {
dbus_connection_set_change_sigpipe(FALSE);
dbus_error_init(&error);
if (!(m->bus = dbus_bus_get_private(m->is_init ? DBUS_BUS_SYSTEM : DBUS_BUS_SESSION, &error))) {
if (!(m->bus = dbus_bus_get_private(m->running_as == MANAGER_USER ? DBUS_BUS_SESSION : DBUS_BUS_SYSTEM, &error))) {
log_error("Failed to get D-Bus connection: %s", error.message);
dbus_error_free(&error);
return -ECONNREFUSED;

17
manager.c
View File

@ -76,6 +76,15 @@ Manager* manager_new(void) {
if (!(m = new0(Manager, 1)))
return NULL;
if (getpid() == 1)
m->running_as = MANAGER_INIT;
else if (getuid() == 0)
m->running_as = MANAGER_SYSTEM;
else
m->running_as = MANAGER_USER;
log_debug("systemd running in %s mode.", manager_running_as_to_string(m->running_as));
m->signal_watch.fd = m->mount_watch.fd = m->udev_watch.fd = m->epoll_fd = -1;
m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
@ -1347,3 +1356,11 @@ int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
return 0;
}
static const char* const manager_running_as_table[_MANAGER_RUNNING_AS_MAX] = {
[MANAGER_INIT] = "init",
[MANAGER_SYSTEM] = "system",
[MANAGER_USER] = "user"
};
DEFINE_STRING_TABLE_LOOKUP(manager_running_as, ManagerRunningAs);

16
manager.h
View File

@ -32,6 +32,14 @@ typedef struct Manager Manager;
typedef enum WatchType WatchType;
typedef struct Watch Watch;
typedef enum ManagerRunningAs {
MANAGER_INIT, /* root and pid=1 */
MANAGER_SYSTEM, /* root and pid!=1 */
MANAGER_USER, /* non-root */
_MANAGER_RUNNING_AS_MAX,
_MANAGER_RUNNING_AS_INVALID = -1
} ManagerRunningAs;
enum WatchType {
WATCH_INVALID,
WATCH_SIGNAL,
@ -69,6 +77,9 @@ struct Watch {
#define SPECIAL_CTRL_ALT_DEL_TARGET "ctrl-alt-del.target"
struct Manager {
/* In which mode are we running */
ManagerRunningAs running_as;
uint32_t current_job_id;
/* Note that the set of units we know of is allowed to be
@ -104,8 +115,6 @@ struct Manager {
bool dispatching_run_queue:1;
bool dispatching_dbus_queue:1;
bool is_init:1;
bool request_bus_dispatch:1;
Hashmap *watch_pids; /* pid => Unit object n:1 */
@ -155,4 +164,7 @@ unsigned manager_dispatch_dbus_queue(Manager *m);
int manager_loop(Manager *m);
const char *manager_running_as_to_string(ManagerRunningAs i);
ManagerRunningAs manager_running_as_from_string(const char *s);
#endif