#include <sys/wait.h>
#include <unistd.h>
#include <sys/poll.h>
+#include <sys/reboot.h>
+#include <sys/ioctl.h>
+#include <linux/kd.h>
#include "manager.h"
#include "hashmap.h"
assert_se(sigaddset(&mask, SIGUSR1) == 0);
assert_se(sigaddset(&mask, SIGUSR2) == 0);
assert_se(sigaddset(&mask, SIGPIPE) == 0);
+ assert_se(sigaddset(&mask, SIGPWR) == 0);
+ assert_se(sigaddset(&mask, SIGTTIN) == 0);
assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
m->signal_watch.type = WATCH_SIGNAL;
if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->signal_watch.fd, &ev) < 0)
return -errno;
+ if (m->running_as == MANAGER_INIT) {
+ /* Enable that we get SIGINT on control-alt-del */
+ if (reboot(RB_DISABLE_CAD) < 0)
+ log_warning("Failed to enable ctrl-alt-del handling: %s", strerror(errno));
+
+ /* Enable that we get SIGWINCH on kbrequest */
+ if (ioctl(0, KDSIGACCEPT, SIGWINCH) < 0)
+ log_warning("Failed to enable kbrequest handling: %s", strerror(errno));
+ }
+
+ return 0;
+}
+
+static char** session_dirs(void) {
+ const char *home, *e;
+ char *config_home = NULL, *data_home = NULL;
+ char **config_dirs = NULL, **data_dirs = NULL;
+ char **r = NULL, **t;
+
+ /* Implement the mechanisms defined in
+ *
+ * http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html
+ *
+ * We look in both the config and the data dirs because we
+ * want to encourage that distributors ship their unit files
+ * as data, and allow overriding as configuration.
+ */
+
+ home = getenv("HOME");
+
+ if ((e = getenv("XDG_CONFIG_HOME"))) {
+ if (asprintf(&config_home, "%s/systemd/session", e) < 0)
+ goto fail;
+
+ } else if (home) {
+ if (asprintf(&config_home, "%s/.config/systemd/session", home) < 0)
+ goto fail;
+ }
+
+ if ((e = getenv("XDG_CONFIG_DIRS")))
+ config_dirs = strv_split(e, ":");
+ else
+ config_dirs = strv_new("/etc/xdg", NULL);
+
+ if (!config_dirs)
+ goto fail;
+
+ if ((e = getenv("XDG_DATA_HOME"))) {
+ if (asprintf(&data_home, "%s/systemd/session", e) < 0)
+ goto fail;
+
+ } else if (home) {
+ if (asprintf(&data_home, "%s/.local/share/systemd/session", home) < 0)
+ goto fail;
+ }
+
+ if ((e = getenv("XDG_DATA_DIRS")))
+ data_dirs = strv_split(e, ":");
+ else
+ data_dirs = strv_new("/usr/local/share", "/usr/share", NULL);
+
+ if (!data_dirs)
+ goto fail;
+
+ /* Now merge everything we found. */
+ if (config_home) {
+ if (!(t = strv_append(r, config_home)))
+ goto fail;
+ strv_free(r);
+ r = t;
+ }
+
+ if (!(t = strv_merge_concat(r, config_dirs, "/systemd/session")))
+ goto finish;
+ strv_free(r);
+ r = t;
+
+ if (!(t = strv_append(r, SESSION_CONFIG_UNIT_PATH)))
+ goto fail;
+ strv_free(r);
+ r = t;
+
+ if (data_home) {
+ if (!(t = strv_append(r, data_home)))
+ goto fail;
+ strv_free(r);
+ r = t;
+ }
+
+ if (!(t = strv_merge_concat(r, data_dirs, "/systemd/session")))
+ goto fail;
+ strv_free(r);
+ r = t;
+
+ if (!(t = strv_append(r, SESSION_DATA_UNIT_PATH)))
+ goto fail;
+ strv_free(r);
+ r = t;
+
+ if (!strv_path_make_absolute_cwd(r))
+ goto fail;
+
+finish:
+ free(config_home);
+ strv_free(config_dirs);
+ free(data_home);
+ strv_free(data_dirs);
+
+ return r;
+
+fail:
+ strv_free(r);
+ r = NULL;
+ goto finish;
+}
+
+static int manager_find_paths(Manager *m) {
+ const char *e;
+ char *t;
+ assert(m);
+
+ /* First priority is whatever has been passed to us via env
+ * vars */
+ if ((e = getenv("SYSTEMD_UNIT_PATH")))
+ if (!(m->unit_path = split_path_and_make_absolute(e)))
+ return -ENOMEM;
+
+ if (strv_isempty(m->unit_path)) {
+
+ /* Nothing is set, so let's figure something out. */
+ strv_free(m->unit_path);
+
+ if (m->running_as == MANAGER_SESSION) {
+ if (!(m->unit_path = session_dirs()))
+ return -ENOMEM;
+ } else
+ if (!(m->unit_path = strv_new(
+ SYSTEM_CONFIG_UNIT_PATH, /* /etc/systemd/system/ */
+ SYSTEM_DATA_UNIT_PATH, /* /lib/systemd/system/ */
+ NULL)))
+ return -ENOMEM;
+ }
+
+ if (m->running_as == MANAGER_INIT) {
+ /* /etc/init.d/ compativility does not matter to users */
+
+ if ((e = getenv("SYSTEMD_SYSVINIT_PATH")))
+ if (!(m->sysvinit_path = split_path_and_make_absolute(e)))
+ return -ENOMEM;
+
+ if (strv_isempty(m->sysvinit_path)) {
+ strv_free(m->sysvinit_path);
+
+ if (!(m->sysvinit_path = strv_new(
+ SYSTEM_SYSVINIT_PATH, /* /etc/init.d/ */
+ NULL)))
+ return -ENOMEM;
+ }
+ }
+
+ strv_uniq(m->unit_path);
+ strv_uniq(m->sysvinit_path);
+
+ assert(!strv_isempty(m->unit_path));
+ if (!(t = strv_join(m->unit_path, "\n\t")))
+ return -ENOMEM;
+ log_debug("Looking for unit files in:\n\t%s", t);
+ free(t);
+
+ if (!strv_isempty(m->sysvinit_path)) {
+
+ if (!(t = strv_join(m->sysvinit_path, "\n\t")))
+ return -ENOMEM;
+
+ log_debug("Looking for SysV init scripts in:\n\t%s", t);
+ free(t);
+ } else
+ log_debug("Ignoring SysV init scripts.");
+
return 0;
}
if (!(m = new0(Manager, 1)))
return NULL;
- if (getpid() == 1)
- m->running_as = MANAGER_INIT;
- else if (getuid() == 0)
- m->running_as = MANAGER_SYSTEM;
- else
- m->running_as = MANAGER_USER;
-
- log_debug("systemd running in %s mode.", manager_running_as_to_string(m->running_as));
-
m->signal_watch.fd = m->mount_watch.fd = m->udev_watch.fd = m->epoll_fd = -1;
m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
if ((m->epoll_fd = epoll_create1(EPOLL_CLOEXEC)) < 0)
goto fail;
+ if (getpid() == 1)
+ m->running_as = MANAGER_INIT;
+ else if (getuid() == 0)
+ m->running_as = MANAGER_SYSTEM;
+ else
+ m->running_as = MANAGER_SESSION;
+
+ log_debug("systemd running in %s mode.", manager_running_as_to_string(m->running_as));
+
+ if (manager_find_paths(m) < 0)
+ goto fail;
+
+ if (chdir("/") < 0)
+ log_warning("Failed to chdir to /: %s", strerror(errno));
+
+ /* Become a session leader if we aren't one yet. */
+ setsid();
+
if (manager_setup_signals(m) < 0)
goto fail;
if (m->signal_watch.fd >= 0)
close_nointr(m->signal_watch.fd);
+ strv_free(m->unit_path);
+ strv_free(m->sysvinit_path);
+
free(m);
}
return -ENOMEM;
if (is_path(path)) {
- if (!(ret->meta.load_path = strdup(path))) {
+ if (!(ret->meta.fragment_path = strdup(path))) {
unit_free(ret);
return -ENOMEM;
}
case SIGINT:
case SIGTERM:
- *quit = true;
- return 0;
+
+ if (m->running_as != MANAGER_INIT) {
+ *quit = true;
+ return 0;
+
+ } else {
+ Unit *target;
+ int r;
+
+ if ((r = manager_load_unit(m, SPECIAL_CTRL_ALT_DEL_TARGET, &target)) < 0)
+ log_error("Failed to load ctrl-alt-del target: %s", strerror(-r));
+ else if ((r = manager_add_job(m, JOB_START, target, JOB_REPLACE, true, NULL)) < 0)
+ log_error("Failed to enqueue ctrl-alt-del job: %s", strerror(-r));
+
+ break;
+ }
+
+ case SIGWINCH:
+
+ if (m->running_as == MANAGER_INIT) {
+ Unit *target;
+ int r;
+
+ if ((r = manager_load_unit(m, SPECIAL_KBREQUEST_TARGET, &target)) < 0)
+ log_error("Failed to load kbrequest target: %s", strerror(-r));
+ else if ((r = manager_add_job(m, JOB_START, target, JOB_REPLACE, true, NULL)) < 0)
+ log_error("Failed to enqueue kbrequest job: %s", strerror(-r));
+
+ break;
+ }
+
+ /* This is a nop on non-init systemd's */
+
+ break;
default:
log_info("Got unhandled signal <%s>.", strsignal(sfsi.ssi_signo));
static const char* const manager_running_as_table[_MANAGER_RUNNING_AS_MAX] = {
[MANAGER_INIT] = "init",
[MANAGER_SYSTEM] = "system",
- [MANAGER_USER] = "user"
+ [MANAGER_SESSION] = "session"
};
DEFINE_STRING_TABLE_LOOKUP(manager_running_as, ManagerRunningAs);
~ianmdlvl / elogind.git / blobdiff