SD_GET_SEATS(3) sd_get_seats SD_GET_SEATS(3)NAME
sd_get_seats, sd_get_sessions, sd_get_uids - Determine available seats,
sessions and logged in users
SYNOPSIS
#include <systemd/sd-login.h>
int sd_get_seats(char*** seats);
int sd_get_sessions(char*** sessions);
int sd_get_uids(char*** sessions);
DESCRIPTIONsd_get_seats() may be used to determine all currently available local
seats. Returns a NULL terminated array of seat identifiers. The
returned array and all strings it references need to be freed with the
libc free(3) call after use. Note that instead of an empty array NULL
may be returned and should be considered equivalent to an empty array.
Similar, sd_get_sessions() may be used to determine all current login
sessions.
Similar, sd_get_uids() may be used to determine all Unix users who
currently have login sessions.
RETURN VALUE
On success sd_get_seats(), sd_get_sessions() and sd_get_uids() return
the number of entries in the arrays. On failure, these calls return a
negative errno-style error code.
NOTES
The sd_get_seats(), sd_get_sessions() and sd_get_uids() interfaces are
available as shared library, which can be compiled and linked to with
the libsystemd-login pkg-config(1) file.
SEE ALSOsystemd(1), sd-login(7), sd_session_get_seat(3)AUTHOR
Lennart Poettering <lennart@poettering.net>
Developer
systemd 05/23/2012 SD_GET_SEATS(3)
