sd-login.h   sd-login.h 
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#include <sys/types.h> #include <sys/types.h>
/* /*
* A few points: * A few points:
* *
* Instead of returning an empty string array or empty uid array, we * Instead of returning an empty string array or empty uid array, we
* may return NULL. * may return NULL.
* *
* Free the data we return with libc free(). * Free the data we return with libc free().
* *
* We return error codes as negative errno, kernel-style. * We return error codes as negative errno, kernel-style. 0 or
* positive on success.
* *
* These functions access data in /proc, /sys/fs/cgroup and /run. All * These functions access data in /proc, /sys/fs/cgroup and /run. All
* of these are virtual file systems, hence the accesses are * of these are virtual file systems, hence the accesses are
* relatively cheap. * relatively cheap.
*/ */
/* Get session from PID. Note that 'shared' processes of a user are /* 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 * not attached to a session, but only attached to a user. This will
* return an error for system processes and 'shared' processes of a * return an error for system processes and 'shared' processes of a
* user. */ * user. */
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* return an error for system processes. */ * return an error for system processes. */
int sd_pid_get_owner_uid(pid_t pid, uid_t *uid); int sd_pid_get_owner_uid(pid_t pid, uid_t *uid);
/* Get state from uid. Possible states: offline, lingering, online, active */ /* Get state from uid. Possible states: offline, lingering, online, active */
int sd_uid_get_state(uid_t uid, char**state); int sd_uid_get_state(uid_t uid, char**state);
/* Return 1 if uid has session on seat. If require_active is true will /* Return 1 if uid has session on seat. If require_active is true will
* look for active sessions only. */ * look for active sessions only. */
int sd_uid_is_on_seat(uid_t uid, int require_active, const char *seat); 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 /* Return sessions of user. If require_active is true will look for
* for active sessions only. */ * active sessions only. Returns number of sessions as return
* value. If sessions is NULL will just return number of sessions. */
int sd_uid_get_sessions(uid_t uid, int require_active, char ***sessions); int sd_uid_get_sessions(uid_t uid, int require_active, char ***sessions);
/* Return seats of user is on. If require_active is true will look for /* Return seats of user is on. If require_active is true will look for
* active seats only. */ * active seats only. Returns number of seats. If seats is NULL will
* just return number of seats.*/
int sd_uid_get_seats(uid_t uid, int require_active, char ***seats); int sd_uid_get_seats(uid_t uid, int require_active, char ***seats);
/* Return 1 if the session is a active */ /* Return 1 if the session is a active */
int sd_session_is_active(const char *session); int sd_session_is_active(const char *session);
/* Determine user id of session */ /* Determine user id of session */
int sd_session_get_uid(const char *session, uid_t *uid); int sd_session_get_uid(const char *session, uid_t *uid);
/* Determine seat of session */ /* Determine seat of session */
int sd_session_get_seat(const char *session, char **seat); int sd_session_get_seat(const char *session, char **seat);
/* Return active session and user of seat */ /* Return active session and user of seat */
int sd_seat_get_active(const char *seat, char **session, uid_t *uid); int sd_seat_get_active(const char *seat, char **session, uid_t *uid);
/* Return sessions and users on seat */ /* Return sessions and users on seat. Returns number of sessions as
* return value. If sessions is NULL returs only the number of
* sessions. */
int sd_seat_get_sessions(const char *seat, char ***sessions, uid_t **uid, u nsigned *n_uids); int sd_seat_get_sessions(const char *seat, char ***sessions, uid_t **uid, u nsigned *n_uids);
/* Return whether the seat is multi-session capable */ /* Return whether the seat is multi-session capable */
int sd_seat_can_multi_session(const char *seat); int sd_seat_can_multi_session(const char *seat);
/* Get all seats */ /* Get all seats, store in *seats. Returns the number of seats. If
* seats is NULL only returns number of seats. */
int sd_get_seats(char ***seats); int sd_get_seats(char ***seats);
/* Get all sessions */ /* Get all sessions, store in *seessions. Returns the number of
* sessions. If sessions is NULL only returns number of sessions. */
int sd_get_sessions(char ***sessions); int sd_get_sessions(char ***sessions);
/* Get all logged in users */ /* Get all logged in users, store in *users. Returns the number of
* users. If users is NULL only returns the number of users. */
int sd_get_uids(uid_t **users); int sd_get_uids(uid_t **users);
/* Monitor object */ /* Monitor object */
typedef struct sd_login_monitor sd_login_monitor; typedef struct sd_login_monitor sd_login_monitor;
/* Create a new monitor. Category must be NULL, "seat", "session", /* Create a new monitor. Category must be NULL, "seat", "session",
* "uid" to get monitor events for the specific category (or all). */ * "uid" to get monitor events for the specific category (or all). */
int sd_login_monitor_new(const char *category, sd_login_monitor** ret); int sd_login_monitor_new(const char *category, sd_login_monitor** ret);
/* Destroys the passed monitor. Returns NULL. */ /* Destroys the passed monitor. Returns NULL. */
 End of changes. 7 change blocks. 
8 lines changed or deleted 16 lines changed or added

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