-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
/***
This file is part of systemd.
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
-#include <sys/mount.h>
+#include <errno.h>
#include <string.h>
+#include <sys/mount.h>
#include <unistd.h>
-#include <errno.h>
-#include "util.h"
-#include "mkdir.h"
-#include "hashmap.h"
-#include "fileio.h"
-#include "path-util.h"
-#include "special.h"
-#include "unit-name.h"
-#include "bus-util.h"
+#include "alloc-util.h"
+#include "bus-common-errors.h"
#include "bus-error.h"
-#include "conf-parser.h"
+#include "bus-util.h"
#include "clean-ipc.h"
-#include "smack-util.h"
+#include "conf-parser.h"
+#include "escape.h"
+#include "fd-util.h"
+#include "fileio.h"
+#include "formats-util.h"
+#include "fs-util.h"
+#include "hashmap.h"
#include "label.h"
#include "logind-user.h"
+#include "mkdir.h"
+#include "mount-util.h"
+#include "parse-util.h"
+#include "path-util.h"
+#include "rm-rf.h"
+#include "smack-util.h"
+//#include "special.h"
+#include "stdio-util.h"
+#include "string-table.h"
+#include "unit-name.h"
+#include "user-util.h"
+#include "util.h"
-User* user_new(Manager *m, uid_t uid, gid_t gid, const char *name) {
- User *u;
+int user_new(User **out, Manager *m, uid_t uid, gid_t gid, const char *name) {
+ _cleanup_(user_freep) User *u = NULL;
+ char lu[DECIMAL_STR_MAX(uid_t) + 1];
+ int r;
+ assert(out);
assert(m);
assert(name);
u = new0(User, 1);
if (!u)
- return NULL;
+ return -ENOMEM;
+
+ u->manager = m;
+ u->uid = uid;
+ u->gid = gid;
+ xsprintf(lu, UID_FMT, uid);
u->name = strdup(name);
if (!u->name)
- goto fail;
+ return -ENOMEM;
if (asprintf(&u->state_file, "/run/systemd/users/"UID_FMT, uid) < 0)
- goto fail;
+ return -ENOMEM;
- if (hashmap_put(m->users, UID_TO_PTR(uid), u) < 0)
- goto fail;
+ if (asprintf(&u->runtime_path, "/run/user/"UID_FMT, uid) < 0)
+ return -ENOMEM;
- u->manager = m;
- u->uid = uid;
- u->gid = gid;
+ r = slice_build_subslice("user.slice", lu, &u->slice);
+ if (r < 0)
+ return r;
- return u;
+ r = unit_name_build("user", lu, ".service", &u->service);
+ if (r < 0)
+ return r;
-fail:
- free(u->state_file);
- free(u->name);
- free(u);
+ r = hashmap_put(m->users, UID_TO_PTR(uid), u);
+ if (r < 0)
+ return r;
+
+ r = hashmap_put(m->user_units, u->slice, u);
+ if (r < 0)
+ return r;
- return NULL;
+ r = hashmap_put(m->user_units, u->service, u);
+ if (r < 0)
+ return r;
+
+ *out = u;
+ u = NULL;
+ return 0;
}
-void user_free(User *u) {
- assert(u);
+User *user_free(User *u) {
+ if (!u)
+ return NULL;
if (u->in_gc_queue)
LIST_REMOVE(gc_queue, u->manager->user_gc_queue, u);
while (u->sessions)
session_free(u->sessions);
- free(u->runtime_path);
+ if (u->service)
+ hashmap_remove_value(u->manager->user_units, u->service, u);
+
+ if (u->slice)
+ hashmap_remove_value(u->manager->user_units, u->slice, u);
+
+ hashmap_remove_value(u->manager->users, UID_TO_PTR(u->uid), u);
- hashmap_remove(u->manager->users, UID_TO_PTR(u->uid));
+#if 0 /// elogind neither supports slice nor service jobs.
+ u->slice_job = mfree(u->slice_job);
+ u->service_job = mfree(u->service_job);
+#endif // 0
- free(u->name);
- free(u->state_file);
- free(u);
+ u->service = mfree(u->service);
+ u->slice = mfree(u->slice);
+ u->runtime_path = mfree(u->runtime_path);
+ u->state_file = mfree(u->state_file);
+ u->name = mfree(u->name);
+
+ return mfree(u);
}
static int user_save_internal(User *u) {
r = mkdir_safe_label("/run/systemd/users", 0755, 0, 0);
if (r < 0)
- goto finish;
+ goto fail;
r = fopen_temporary(u->state_file, &f, &temp_path);
if (r < 0)
- goto finish;
+ goto fail;
fchmod(fileno(f), 0644);
u->name,
user_state_to_string(user_get_state(u)));
+ /* LEGACY: no-one reads RUNTIME= anymore, drop it at some point */
if (u->runtime_path)
fprintf(f, "RUNTIME=%s\n", u->runtime_path);
+#if 0 /// elogind neither supports service nor slice jobs
+ if (u->service_job)
+ fprintf(f, "SERVICE_JOB=%s\n", u->service_job);
+
+ if (u->slice_job)
+ fprintf(f, "SLICE_JOB=%s\n", u->slice_job);
+#endif // 0
+
if (u->display)
fprintf(f, "DISPLAY=%s\n", u->display->id);
fputc('\n', f);
}
- fflush(f);
+ r = fflush_and_check(f);
+ if (r < 0)
+ goto fail;
- if (ferror(f) || rename(temp_path, u->state_file) < 0) {
+ if (rename(temp_path, u->state_file) < 0) {
r = -errno;
- unlink(u->state_file);
- unlink(temp_path);
+ goto fail;
}
-finish:
- if (r < 0)
- log_error_errno(r, "Failed to save user data %s: %m", u->state_file);
+ return 0;
- return r;
+fail:
+ (void) unlink(u->state_file);
+
+ if (temp_path)
+ (void) unlink(temp_path);
+
+ return log_error_errno(r, "Failed to save user data %s: %m", u->state_file);
}
int user_save(User *u) {
assert(u);
r = parse_env_file(u->state_file, NEWLINE,
- "RUNTIME", &u->runtime_path,
+#if 0 /// elogind neither supports service nor slice jobs
+ "SERVICE_JOB", &u->service_job,
+ "SLICE_JOB", &u->slice_job,
+#endif // 0
"DISPLAY", &display,
"REALTIME", &realtime,
"MONOTONIC", &monotonic,
if (s && s->display && display_is_local(s->display))
u->display = s;
- if (realtime) {
- unsigned long long l;
- if (sscanf(realtime, "%llu", &l) > 0)
- u->timestamp.realtime = l;
- }
-
- if (monotonic) {
- unsigned long long l;
- if (sscanf(monotonic, "%llu", &l) > 0)
- u->timestamp.monotonic = l;
- }
+ if (realtime)
+ timestamp_deserialize(realtime, &u->timestamp.realtime);
+ if (monotonic)
+ timestamp_deserialize(monotonic, &u->timestamp.monotonic);
return r;
}
static int user_mkdir_runtime_path(User *u) {
- char *p;
int r;
assert(u);
if (r < 0)
return log_error_errno(r, "Failed to create /run/user: %m");
- if (!u->runtime_path) {
- if (asprintf(&p, "/run/user/" UID_FMT, u->uid) < 0)
- return log_oom();
- } else
- p = u->runtime_path;
-
- if (path_is_mount_point(p, 0) <= 0) {
+ if (path_is_mount_point(u->runtime_path, 0) <= 0) {
_cleanup_free_ char *t = NULL;
- (void) mkdir_label(p, 0700);
+ (void) mkdir_label(u->runtime_path, 0700);
if (mac_smack_use())
r = asprintf(&t, "mode=0700,smackfsroot=*,uid=" UID_FMT ",gid=" GID_FMT ",size=%zu", u->uid, u->gid, u->manager->runtime_dir_size);
goto fail;
}
- r = mount("tmpfs", p, "tmpfs", MS_NODEV|MS_NOSUID, t);
+ r = mount("tmpfs", u->runtime_path, "tmpfs", MS_NODEV|MS_NOSUID, t);
if (r < 0) {
if (errno != EPERM) {
- r = log_error_errno(errno, "Failed to mount per-user tmpfs directory %s: %m", p);
+ r = log_error_errno(errno, "Failed to mount per-user tmpfs directory %s: %m", u->runtime_path);
goto fail;
}
* CAP_SYS_ADMIN-less container? In this case,
* just use a normal directory. */
- r = chmod_and_chown(p, 0700, u->uid, u->gid);
+ r = chmod_and_chown(u->runtime_path, 0700, u->uid, u->gid);
if (r < 0) {
log_error_errno(r, "Failed to change runtime directory ownership and mode: %m");
goto fail;
}
}
- r = label_fix(p, false, false);
+ r = label_fix(u->runtime_path, false, false);
if (r < 0)
- log_warning_errno(r, "Failed to fix label of '%s', ignoring: %m", p);
+ log_warning_errno(r, "Failed to fix label of '%s', ignoring: %m", u->runtime_path);
}
- u->runtime_path = p;
return 0;
fail:
- if (p) {
- /* Try to clean up, but ignore errors */
- (void) rmdir(p);
- free(p);
+ /* Try to clean up, but ignore errors */
+ (void) rmdir(u->runtime_path);
+ return r;
+}
+
+static int user_start_slice(User *u) {
+#if 0 /// elogind can not ask systemd via dbus to start user services
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ const char *description;
+ char *job;
+ int r;
+
+ assert(u);
+
+ u->slice_job = mfree(u->slice_job);
+ description = strjoina("User Slice of ", u->name);
+
+ r = manager_start_slice(
+ u->manager,
+ u->slice,
+ description,
+ "systemd-logind.service",
+ "systemd-user-sessions.service",
+ u->manager->user_tasks_max,
+ &error,
+ &job);
+ if (r >= 0)
+ u->slice_job = job;
+ else if (!sd_bus_error_has_name(&error, BUS_ERROR_UNIT_EXISTS))
+ /* we don't fail due to this, let's try to continue */
+ log_error_errno(r, "Failed to start user slice %s, ignoring: %s (%s)",
+ u->slice, bus_error_message(&error, r), error.name);
+#else
+ assert(u);
+
+ hashmap_put(u->manager->user_units, u->slice, u);
+#endif // 0
+
+ return 0;
+}
+
+static int user_start_service(User *u) {
+#if 0 /// elogind can not ask systemd via dbus to start user services
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ char *job;
+ int r;
+
+ assert(u);
+
+ u->service_job = mfree(u->service_job);
+
+ r = manager_start_unit(
+ u->manager,
+ u->service,
+ &error,
+ &job);
+ if (r < 0) {
+ /* we don't fail due to this, let's try to continue */
+ log_error_errno(r, "Failed to start user service, ignoring: %s", bus_error_message(&error, r));
+ } else {
+ u->service_job = job;
}
+#else
+ assert(u);
- u->runtime_path = NULL;
- return r;
+ hashmap_put(u->manager->user_units, u->service, u);
+#endif // 0
+
+ return 0;
}
int user_start(User *u) {
assert(u);
- if (u->started)
+ if (u->started && !u->stopping)
return 0;
- log_debug("New user %s logged in.", u->name);
+ /*
+ * If u->stopping is set, the user is marked for removal and the slice
+ * and service stop-jobs are queued. We have to clear that flag before
+ * queing the start-jobs again. If they succeed, the user object can be
+ * re-used just fine (pid1 takes care of job-ordering and proper
+ * restart), but if they fail, we want to force another user_stop() so
+ * possibly pending units are stopped.
+ * Note that we don't clear u->started, as we have no clue what state
+ * the user is in on failure here. Hence, we pretend the user is
+ * running so it will be properly taken down by GC. However, we clearly
+ * return an error from user_start() in that case, so no further
+ * reference to the user is taken.
+ */
+ u->stopping = false;
+
+ if (!u->started) {
+ log_debug("New user %s logged in.", u->name);
+
+ /* Make XDG_RUNTIME_DIR */
+ r = user_mkdir_runtime_path(u);
+ if (r < 0)
+ return r;
+ }
- /* Make XDG_RUNTIME_DIR */
- r = user_mkdir_runtime_path(u);
+ /* Create cgroup */
+ r = user_start_slice(u);
if (r < 0)
return r;
* "officially" started yet. */
user_save_internal(u);
- if (!dual_timestamp_is_set(&u->timestamp))
- dual_timestamp_get(&u->timestamp);
+ /* Spawn user systemd */
+ r = user_start_service(u);
+ if (r < 0)
+ return r;
- u->started = true;
+ if (!u->started) {
+ if (!dual_timestamp_is_set(&u->timestamp))
+ dual_timestamp_get(&u->timestamp);
+ user_send_signal(u, true);
+ u->started = true;
+ }
/* Save new user data */
user_save(u);
- user_send_signal(u, true);
-
return 0;
}
-static int user_remove_runtime_path(User *u) {
+#if 0 /// UNNEEDED by elogind
+static int user_stop_slice(User *u) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ char *job;
int r;
assert(u);
- if (!u->runtime_path)
- return 0;
+ r = manager_stop_unit(u->manager, u->slice, &error, &job);
+ if (r < 0) {
+ log_error("Failed to stop user slice: %s", bus_error_message(&error, r));
+ return r;
+ }
+
+ free(u->slice_job);
+ u->slice_job = job;
+
+ return r;
+}
+
+static int user_stop_service(User *u) {
+ _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
+ char *job;
+ int r;
+
+ assert(u);
+
+ r = manager_stop_unit(u->manager, u->service, &error, &job);
+ if (r < 0) {
+ log_error("Failed to stop user service: %s", bus_error_message(&error, r));
+ return r;
+ }
+
+ free(u->service_job);
+ u->service_job = job;
- r = rm_rf(u->runtime_path, false, false, false);
+ return r;
+}
+#endif // 0
+
+static int user_remove_runtime_path(User *u) {
+ int r;
+
+ assert(u);
+
+ r = rm_rf(u->runtime_path, 0);
if (r < 0)
log_error_errno(r, "Failed to remove runtime directory %s: %m", u->runtime_path);
if (r < 0 && errno != EINVAL && errno != ENOENT)
log_error_errno(errno, "Failed to unmount user runtime directory %s: %m", u->runtime_path);
- r = rm_rf(u->runtime_path, false, true, false);
+ r = rm_rf(u->runtime_path, REMOVE_ROOT);
if (r < 0)
log_error_errno(r, "Failed to remove runtime directory %s: %m", u->runtime_path);
- free(u->runtime_path);
- u->runtime_path = NULL;
-
return r;
}
r = k;
}
+ /* Kill systemd */
+#if 0 /// elogind does not support service or slice jobs
+ k = user_stop_service(u);
+ if (k < 0)
+ r = k;
+
+ /* Kill cgroup */
+ k = user_stop_slice(u);
+ if (k < 0)
+ r = k;
+#endif // 0
+
u->stopping = true;
user_save(u);
if (user_check_linger_file(u) > 0)
return true;
+#if 0 /// elogind neither supports service nor slice jobs
+ if (u->slice_job && manager_job_is_active(u->manager, u->slice_job))
+ return true;
+
+ if (u->service_job && manager_job_is_active(u->manager, u->service_job))
+ return true;
+#endif // 0
+
return false;
}
if (u->stopping)
return USER_CLOSING;
+#if 0 /// elogind neither supports service nor slice jobs.
+ if (!u->started || u->slice_job || u->service_job)
+#else
+ if (!u->started)
+#endif // 0
+ return USER_OPENING;
+
if (u->sessions) {
bool all_closing = true;
}
int user_kill(User *u, int signo) {
+#if 0 /// Without systemd unit support, elogind has to rely on its session system
assert(u);
- /* FIXME: No way to kill a user without systemd. */
- return -ESRCH;
+ return manager_kill_unit(u->manager, u->slice, KILL_ALL, signo, NULL);
+#else
+ Session *s;
+ int res = 0;
+
+ assert(u);
+
+ LIST_FOREACH(sessions_by_user, s, u->sessions) {
+ int r = session_kill(s, KILL_ALL, signo);
+ if (res == 0 && r < 0)
+ res = r;
+ }
+
+ return res;
+#endif // 0
}
static bool elect_display_filter(Session *s) {
errno = 0;
ul = strtoul(rvalue, &f, 10);
- if (errno != 0 || f != e) {
- log_syntax(unit, LOG_ERR, filename, line, errno ? errno : EINVAL, "Failed to parse percentage value, ignoring: %s", rvalue);
+ if (errno > 0 || f != e) {
+ log_syntax(unit, LOG_ERR, filename, line, errno, "Failed to parse percentage value, ignoring: %s", rvalue);
return 0;
}
if (ul <= 0 || ul >= 100) {
- log_syntax(unit, LOG_ERR, filename, line, errno ? errno : EINVAL, "Percentage value out of range, ignoring: %s", rvalue);
+ log_syntax(unit, LOG_ERR, filename, line, 0, "Percentage value out of range, ignoring: %s", rvalue);
return 0;
}
*sz = PAGE_ALIGN((size_t) ((physical_memory() * (uint64_t) ul) / (uint64_t) 100));
} else {
- off_t o;
+ uint64_t k;
- r = parse_size(rvalue, 1024, &o);
- if (r < 0 || (off_t) (size_t) o != o) {
- log_syntax(unit, LOG_ERR, filename, line, r < 0 ? -r : ERANGE, "Failed to parse size value, ignoring: %s", rvalue);
+ r = parse_size(rvalue, 1024, &k);
+ if (r < 0 || (uint64_t) (size_t) k != k) {
+ log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse size value, ignoring: %s", rvalue);
return 0;
}
- *sz = PAGE_ALIGN((size_t) o);
+ *sz = PAGE_ALIGN((size_t) k);
}
return 0;
~ianmdlvl / elogind.git / blobdiff