| /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
| |
| #ifndef foosdloginhfoo |
| #define foosdloginhfoo |
| |
| /*** |
| This file is part of systemd. |
| |
| Copyright 2011 Lennart Poettering |
| |
| systemd is free software; you can redistribute it and/or modify it |
| under the terms of the GNU Lesser General Public License as published by |
| the Free Software Foundation; either version 2.1 of the License, or |
| (at your option) any later version. |
| |
| systemd is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public License |
| along with systemd; If not, see <http://www.gnu.org/licenses/>. |
| ***/ |
| |
| #include <sys/types.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* |
| * 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. 0 or |
| * positive on success. |
| * |
| * 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 systemd unit (i.e. service) name from PID. This will return an |
| * error for non-service processes. */ |
| int sd_pid_get_unit(pid_t, char **unit); |
| |
| /* 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. 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. 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); |
| |
| /* Return seats of user is on. If require_active is true will look for |
| * 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); |
| |
| /* Return 1 if the session is a active */ |
| int sd_session_is_active(const char *session); |
| |
| /* Determine user id of session */ |
| int sd_session_get_uid(const char *session, uid_t *uid); |
| |
| /* Determine seat of session */ |
| int sd_session_get_seat(const char *session, char **seat); |
| |
| /* Determine the (PAM) service name this session was registered by. */ |
| int sd_session_get_service(const char *session, char **service); |
| |
| /* Determine the type of this session, i.e. one of "tty", "x11" or "unspecified". */ |
| int sd_session_get_type(const char *session, char **type); |
| |
| /* Determine the class of this session, i.e. one of "user", "greeter" or "lock-screen". */ |
| int sd_session_get_class(const char *session, char **clazz); |
| |
| /* Determine the X11 display of this session. */ |
| int sd_session_get_display(const char *session, char **display); |
| |
| /* 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. Returns number of sessions as |
| * return value. If sessions is NULL returns only the number of |
| * sessions. */ |
| int sd_seat_get_sessions(const char *seat, char ***sessions, uid_t **uid, unsigned *n_uids); |
| |
| /* Return whether the seat is multi-session capable */ |
| int sd_seat_can_multi_session(const char *seat); |
| |
| /* 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); |
| |
| /* Get all sessions, store in *sessions. Returns the number of |
| * sessions. If sessions is NULL only returns number of sessions. */ |
| int sd_get_sessions(char ***sessions); |
| |
| /* 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); |
| |
| /* 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); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif |