diff options
Diffstat (limited to 'src/sd-login.h')
| -rw-r--r-- | src/sd-login.h | 69 |
1 files changed, 64 insertions, 5 deletions
diff --git a/src/sd-login.h b/src/sd-login.h index f23ac80526..c6835e1235 100644 --- a/src/sd-login.h +++ b/src/sd-login.h @@ -24,17 +24,48 @@ #include <sys/types.h> -/* Get session from PID */ +/* + * A few points: + * + * Instead of returning an empty string array or empty uid array, we + * may return NULL. + * + * Free the data we return with libc free(). + * + * We return error codes as negative errno, kernel-style. + * + * These functions access data in /proc, /sys/fs/cgroup and /run. All + * of these are virtual file systems, hence the accesses are + * relatively cheap. + */ + +/* Get session from PID. Note that 'shared' processes of a user are + * not attached to a session, but only attached to a user. This will + * return an error for system processes and 'shared' processes of a + * user. */ int sd_pid_get_session(pid_t pid, char **session); +/* Get UID of the owner of the session of the PID (or in case the + * process is a 'shared' user process the UID of that user is + * returned). This will not return the UID of the process, but rather + * the UID of the owner of the cgroup the process is in. This will + * return an error for system processes. */ +int sd_pid_get_owner_uid(pid_t pid, uid_t *uid); + /* Get state from uid. Possible states: offline, lingering, online, active */ int sd_uid_get_state(uid_t uid, char**state); -/* Return 1 if uid has session on seat */ -int sd_uid_is_on_seat(uid_t uid, const char *seat); +/* Return 1 if uid has session on seat. If require_active is true will + * look for active sessions only. */ +int sd_uid_is_on_seat(uid_t uid, int require_active, const char *seat); + +/* Return sessions of user. If require_active is true will look + * for active sessions only. */ +int sd_uid_get_sessions(uid_t uid, int require_active, char ***sessions); -/* Return 1 if uid has active session on seat */ -int sd_uid_is_active_on_seat(uid_t uid, const char *seat); +/* Return seats of user is on. If require_active is true will look for + * active seats only. */ +int sd_uid_get_seats(uid_t uid, int require_active, char ***seats); /* Return 1 if the session is a active */ int sd_session_is_active(const char *session); @@ -48,4 +79,32 @@ int sd_session_get_seat(const char *session, char **seat); /* Return active session and user of seat */ int sd_seat_get_active(const char *seat, char **session, uid_t *uid); +/* Return sessions and users on seat */ +int sd_seat_get_sessions(const char *seat, char ***sessions, uid_t **uid, unsigned *n_uids); + +/* Get all seats */ +int sd_get_seats(char ***seats); + +/* Get all sessions */ +int sd_get_sessions(char ***sessions); + +/* Get all logged in users */ +int sd_get_uids(uid_t **users); + +/* Monitor object */ +typedef struct sd_login_monitor sd_login_monitor; + +/* Create a new monitor. Category must be NULL, "seat", "session", + * "uid" to get monitor events for the specific category (or all). */ +int sd_login_monitor_new(const char *category, sd_login_monitor** ret); + +/* Destroys the passed monitor. Returns NULL. */ +sd_login_monitor* sd_login_monitor_unref(sd_login_monitor *m); + +/* Flushes the monitor */ +int sd_login_monitor_flush(sd_login_monitor *m); + +/* Get FD from monitor */ +int sd_login_monitor_get_fd(sd_login_monitor *m); + #endif |