0249b2cb0b
We want to avoid any static files that are shared between multiple programs but are not part of SHL. These make the build-process just more complex. Move log.[ch] to SHL so we have a known context. Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
133 lines
3.0 KiB
C
133 lines
3.0 KiB
C
/*
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* uterm - Linux User-Space Terminal
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*
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* Copyright (c) 2012 David Herrmann <dh.herrmann@googlemail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* Systemd integration
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* Systemd provides multi-seat support and other helpers that we can use in
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* uterm.
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*/
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#include <errno.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <systemd/sd-daemon.h>
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#include <systemd/sd-login.h>
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#include "shl_log.h"
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#include "uterm_monitor.h"
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#include "uterm_systemd_internal.h"
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#define LOG_SUBSYSTEM "systemd"
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struct uterm_sd {
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sd_login_monitor *mon;
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};
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int uterm_sd_new(struct uterm_sd **out)
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{
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int ret;
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struct uterm_sd *sd;
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if (!out)
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return -EINVAL;
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ret = sd_booted();
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if (ret < 0) {
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log_warning("cannot determine whether system booted with systemd (%d): %s",
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ret, strerror(-ret));
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return -EOPNOTSUPP;
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} else if (!ret) {
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log_info("system not booted with systemd, disabling multi-seat support");
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return -EOPNOTSUPP;
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}
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log_info("system booted with systemd, enabling multi-seat support");
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sd = malloc(sizeof(*sd));
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if (!sd)
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return -ENOMEM;
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memset(sd, 0, sizeof(*sd));
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ret = sd_login_monitor_new("seat", &sd->mon);
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if (ret) {
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log_err("cannot create systemd login monitor (%d): %s",
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ret, strerror(-ret));
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ret = -EFAULT;
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goto err_free;
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}
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*out = sd;
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return 0;
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err_free:
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free(sd);
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return ret;
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}
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void uterm_sd_free(struct uterm_sd *sd)
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{
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if (!sd)
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return;
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sd_login_monitor_unref(sd->mon);
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free(sd);
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}
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int uterm_sd_get_fd(struct uterm_sd *sd)
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{
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if (!sd)
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return -EINVAL;
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return sd_login_monitor_get_fd(sd->mon);
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}
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void uterm_sd_flush(struct uterm_sd *sd)
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{
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if (!sd)
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return;
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sd_login_monitor_flush(sd->mon);
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}
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int uterm_sd_get_seats(struct uterm_sd *sd, char ***seats)
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{
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int ret;
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char **s;
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if (!sd || !seats)
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return -EINVAL;
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ret = sd_get_seats(&s);
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if (ret < 0) {
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log_warning("cannot read seat information from systemd: %d",
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ret);
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return -EFAULT;
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}
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*seats = s;
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return ret;
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}
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