862 lines
27 KiB
C
862 lines
27 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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#include "alloc-util.h"
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#include "bus-common-errors.h"
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#include "bus-error.h"
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#include "bus-util.h"
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#include "cgroup-util.h"
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#include "clean-ipc.h"
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#include "env-file.h"
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#include "escape.h"
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#include "fd-util.h"
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#include "fileio.h"
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#include "format-util.h"
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#include "fs-util.h"
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#include "hashmap.h"
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#include "label.h"
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#include "limits-util.h"
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#include "logind-user.h"
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#include "mkdir.h"
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#include "parse-util.h"
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#include "path-util.h"
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#include "rm-rf.h"
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#include "serialize.h"
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#include "special.h"
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#include "stdio-util.h"
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#include "string-table.h"
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#include "strv.h"
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#include "tmpfile-util.h"
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#include "unit-name.h"
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#include "user-util.h"
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#include "util.h"
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int user_new(User **ret,
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Manager *m,
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uid_t uid,
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gid_t gid,
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const char *name,
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const char *home) {
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_cleanup_(user_freep) User *u = NULL;
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char lu[DECIMAL_STR_MAX(uid_t) + 1];
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int r;
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assert(ret);
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assert(m);
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assert(name);
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u = new(User, 1);
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if (!u)
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return -ENOMEM;
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*u = (User) {
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.manager = m,
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.uid = uid,
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.gid = gid,
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.last_session_timestamp = USEC_INFINITY,
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};
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u->name = strdup(name);
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if (!u->name)
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return -ENOMEM;
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u->home = strdup(home);
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if (!u->home)
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return -ENOMEM;
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path_simplify(u->home, true);
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if (asprintf(&u->state_file, "/run/systemd/users/"UID_FMT, uid) < 0)
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return -ENOMEM;
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if (asprintf(&u->runtime_path, "/run/user/"UID_FMT, uid) < 0)
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return -ENOMEM;
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xsprintf(lu, UID_FMT, uid);
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r = slice_build_subslice(SPECIAL_USER_SLICE, lu, &u->slice);
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if (r < 0)
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return r;
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r = unit_name_build("user", lu, ".service", &u->service);
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if (r < 0)
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return r;
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r = unit_name_build("user-runtime-dir", lu, ".service", &u->runtime_dir_service);
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if (r < 0)
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return r;
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r = hashmap_put(m->users, UID_TO_PTR(uid), u);
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if (r < 0)
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return r;
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r = hashmap_put(m->user_units, u->slice, u);
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if (r < 0)
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return r;
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r = hashmap_put(m->user_units, u->service, u);
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if (r < 0)
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return r;
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r = hashmap_put(m->user_units, u->runtime_dir_service, u);
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if (r < 0)
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return r;
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*ret = TAKE_PTR(u);
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return 0;
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}
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User *user_free(User *u) {
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if (!u)
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return NULL;
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if (u->in_gc_queue)
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LIST_REMOVE(gc_queue, u->manager->user_gc_queue, u);
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while (u->sessions)
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session_free(u->sessions);
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if (u->service)
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hashmap_remove_value(u->manager->user_units, u->service, u);
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if (u->runtime_dir_service)
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hashmap_remove_value(u->manager->user_units, u->runtime_dir_service, u);
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if (u->slice)
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hashmap_remove_value(u->manager->user_units, u->slice, u);
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hashmap_remove_value(u->manager->users, UID_TO_PTR(u->uid), u);
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(void) sd_event_source_unref(u->timer_event_source);
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u->service_job = mfree(u->service_job);
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u->service = mfree(u->service);
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u->runtime_dir_service = mfree(u->runtime_dir_service);
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u->slice = mfree(u->slice);
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u->runtime_path = mfree(u->runtime_path);
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u->state_file = mfree(u->state_file);
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u->name = mfree(u->name);
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u->home = mfree(u->home);
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return mfree(u);
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}
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static int user_save_internal(User *u) {
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_cleanup_free_ char *temp_path = NULL;
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_cleanup_fclose_ FILE *f = NULL;
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int r;
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assert(u);
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assert(u->state_file);
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r = mkdir_safe_label("/run/systemd/users", 0755, 0, 0, MKDIR_WARN_MODE);
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if (r < 0)
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goto fail;
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r = fopen_temporary(u->state_file, &f, &temp_path);
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if (r < 0)
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goto fail;
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(void) fchmod(fileno(f), 0644);
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fprintf(f,
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"# This is private data. Do not parse.\n"
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"NAME=%s\n"
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"STATE=%s\n" /* friendly user-facing state */
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"STOPPING=%s\n", /* low-level state */
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u->name,
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user_state_to_string(user_get_state(u)),
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yes_no(u->stopping));
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/* LEGACY: no-one reads RUNTIME= anymore, drop it at some point */
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if (u->runtime_path)
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fprintf(f, "RUNTIME=%s\n", u->runtime_path);
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if (u->service_job)
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fprintf(f, "SERVICE_JOB=%s\n", u->service_job);
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if (u->display)
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fprintf(f, "DISPLAY=%s\n", u->display->id);
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if (dual_timestamp_is_set(&u->timestamp))
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fprintf(f,
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"REALTIME="USEC_FMT"\n"
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"MONOTONIC="USEC_FMT"\n",
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u->timestamp.realtime,
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u->timestamp.monotonic);
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if (u->last_session_timestamp != USEC_INFINITY)
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fprintf(f, "LAST_SESSION_TIMESTAMP=" USEC_FMT "\n",
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u->last_session_timestamp);
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if (u->sessions) {
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Session *i;
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bool first;
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fputs("SESSIONS=", f);
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first = true;
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LIST_FOREACH(sessions_by_user, i, u->sessions) {
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if (first)
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first = false;
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else
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fputc(' ', f);
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fputs(i->id, f);
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}
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fputs("\nSEATS=", f);
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first = true;
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LIST_FOREACH(sessions_by_user, i, u->sessions) {
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if (!i->seat)
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continue;
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if (first)
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first = false;
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else
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fputc(' ', f);
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fputs(i->seat->id, f);
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}
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fputs("\nACTIVE_SESSIONS=", f);
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first = true;
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LIST_FOREACH(sessions_by_user, i, u->sessions) {
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if (!session_is_active(i))
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continue;
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if (first)
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first = false;
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else
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fputc(' ', f);
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fputs(i->id, f);
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}
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fputs("\nONLINE_SESSIONS=", f);
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first = true;
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LIST_FOREACH(sessions_by_user, i, u->sessions) {
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if (session_get_state(i) == SESSION_CLOSING)
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continue;
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if (first)
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first = false;
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else
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fputc(' ', f);
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fputs(i->id, f);
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}
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fputs("\nACTIVE_SEATS=", f);
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first = true;
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LIST_FOREACH(sessions_by_user, i, u->sessions) {
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if (!session_is_active(i) || !i->seat)
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continue;
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if (first)
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first = false;
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else
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fputc(' ', f);
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fputs(i->seat->id, f);
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}
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fputs("\nONLINE_SEATS=", f);
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first = true;
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LIST_FOREACH(sessions_by_user, i, u->sessions) {
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if (session_get_state(i) == SESSION_CLOSING || !i->seat)
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continue;
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if (first)
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first = false;
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else
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fputc(' ', f);
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fputs(i->seat->id, f);
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}
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fputc('\n', f);
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}
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r = fflush_and_check(f);
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if (r < 0)
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goto fail;
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if (rename(temp_path, u->state_file) < 0) {
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r = -errno;
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goto fail;
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}
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return 0;
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fail:
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(void) unlink(u->state_file);
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if (temp_path)
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(void) unlink(temp_path);
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return log_error_errno(r, "Failed to save user data %s: %m", u->state_file);
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}
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int user_save(User *u) {
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assert(u);
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if (!u->started)
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return 0;
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return user_save_internal(u);
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}
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int user_load(User *u) {
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_cleanup_free_ char *realtime = NULL, *monotonic = NULL, *stopping = NULL, *last_session_timestamp = NULL;
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int r;
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assert(u);
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r = parse_env_file(NULL, u->state_file,
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"SERVICE_JOB", &u->service_job,
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"STOPPING", &stopping,
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"REALTIME", &realtime,
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"MONOTONIC", &monotonic,
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"LAST_SESSION_TIMESTAMP", &last_session_timestamp);
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if (r == -ENOENT)
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return 0;
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if (r < 0)
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return log_error_errno(r, "Failed to read %s: %m", u->state_file);
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if (stopping) {
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r = parse_boolean(stopping);
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if (r < 0)
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log_debug_errno(r, "Failed to parse 'STOPPING' boolean: %s", stopping);
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else
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u->stopping = r;
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}
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if (realtime)
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(void) deserialize_usec(realtime, &u->timestamp.realtime);
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if (monotonic)
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(void) deserialize_usec(monotonic, &u->timestamp.monotonic);
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if (last_session_timestamp)
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(void) deserialize_usec(last_session_timestamp, &u->last_session_timestamp);
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return 0;
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}
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static void user_start_service(User *u) {
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_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
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int r;
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assert(u);
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/* Start the service containing the "systemd --user" instance (user@.service). Note that we don't explicitly
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* start the per-user slice or the systemd-runtime-dir@.service instance, as those are pulled in both by
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* user@.service and the session scopes as dependencies. */
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u->service_job = mfree(u->service_job);
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r = manager_start_unit(u->manager, u->service, &error, &u->service_job);
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if (r < 0)
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log_full_errno(sd_bus_error_has_name(&error, BUS_ERROR_UNIT_MASKED) ? LOG_DEBUG : LOG_WARNING, r,
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"Failed to start user service '%s', ignoring: %s", u->service, bus_error_message(&error, r));
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}
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int user_start(User *u) {
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assert(u);
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if (u->started && !u->stopping)
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return 0;
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/* If u->stopping is set, the user is marked for removal and service stop-jobs are queued. We have to clear
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* that flag before queueing the start-jobs again. If they succeed, the user object can be re-used just fine
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* (pid1 takes care of job-ordering and proper restart), but if they fail, we want to force another user_stop()
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* so possibly pending units are stopped. */
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u->stopping = false;
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if (!u->started)
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log_debug("Starting services for new user %s.", u->name);
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/* Save the user data so far, because pam_systemd will read the XDG_RUNTIME_DIR out of it while starting up
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* systemd --user. We need to do user_save_internal() because we have not "officially" started yet. */
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user_save_internal(u);
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/* Start user@UID.service */
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user_start_service(u);
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if (!u->started) {
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if (!dual_timestamp_is_set(&u->timestamp))
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dual_timestamp_get(&u->timestamp);
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user_send_signal(u, true);
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u->started = true;
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}
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/* Save new user data */
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user_save(u);
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return 0;
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}
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static void user_stop_service(User *u) {
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_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
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int r;
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assert(u);
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assert(u->service);
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/* The reverse of user_start_service(). Note that we only stop user@UID.service here, and let StopWhenUnneeded=
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* deal with the slice and the user-runtime-dir@.service instance. */
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u->service_job = mfree(u->service_job);
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r = manager_stop_unit(u->manager, u->service, &error, &u->service_job);
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if (r < 0)
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log_warning_errno(r, "Failed to stop user service '%s', ignoring: %s", u->service, bus_error_message(&error, r));
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}
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int user_stop(User *u, bool force) {
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Session *s;
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int r = 0;
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assert(u);
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/* This is called whenever we begin with tearing down a user record. It's called in two cases: explicit API
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* request to do so via the bus (in which case 'force' is true) and automatically due to GC, if there's no
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* session left pinning it (in which case 'force' is false). Note that this just initiates tearing down of the
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* user, the User object will remain in memory until user_finalize() is called, see below. */
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if (!u->started)
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return 0;
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if (u->stopping) { /* Stop jobs have already been queued */
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user_save(u);
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return 0;
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}
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LIST_FOREACH(sessions_by_user, s, u->sessions) {
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int k;
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k = session_stop(s, force);
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if (k < 0)
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r = k;
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}
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user_stop_service(u);
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u->stopping = true;
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user_save(u);
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return r;
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}
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int user_finalize(User *u) {
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Session *s;
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int r = 0, k;
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assert(u);
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/* Called when the user is really ready to be freed, i.e. when all unit stop jobs and suchlike for it are
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* done. This is called as a result of an earlier user_done() when all jobs are completed. */
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if (u->started)
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log_debug("User %s logged out.", u->name);
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LIST_FOREACH(sessions_by_user, s, u->sessions) {
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k = session_finalize(s);
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if (k < 0)
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r = k;
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}
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/* Clean SysV + POSIX IPC objects, but only if this is not a system user. Background: in many setups cronjobs
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* are run in full PAM and thus logind sessions, even if the code run doesn't belong to actual users but to
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* system components. Since enable RemoveIPC= globally for all users, we need to be a bit careful with such
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* cases, as we shouldn't accidentally remove a system service's IPC objects while it is running, just because
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* a cronjob running as the same user just finished. Hence: exclude system users generally from IPC clean-up,
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* and do it only for normal users. */
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if (u->manager->remove_ipc && !uid_is_system(u->uid)) {
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k = clean_ipc_by_uid(u->uid);
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if (k < 0)
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r = k;
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}
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(void) unlink(u->state_file);
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user_add_to_gc_queue(u);
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if (u->started) {
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user_send_signal(u, false);
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u->started = false;
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}
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return r;
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}
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int user_get_idle_hint(User *u, dual_timestamp *t) {
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Session *s;
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bool idle_hint = true;
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dual_timestamp ts = DUAL_TIMESTAMP_NULL;
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assert(u);
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LIST_FOREACH(sessions_by_user, s, u->sessions) {
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dual_timestamp k;
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int ih;
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ih = session_get_idle_hint(s, &k);
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if (ih < 0)
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return ih;
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if (!ih) {
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if (!idle_hint) {
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if (k.monotonic < ts.monotonic)
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ts = k;
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} else {
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idle_hint = false;
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ts = k;
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}
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} else if (idle_hint) {
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if (k.monotonic > ts.monotonic)
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ts = k;
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}
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}
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if (t)
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*t = ts;
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return idle_hint;
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}
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int user_check_linger_file(User *u) {
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_cleanup_free_ char *cc = NULL;
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char *p = NULL;
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cc = cescape(u->name);
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if (!cc)
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return -ENOMEM;
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p = strjoina("/var/lib/systemd/linger/", cc);
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if (access(p, F_OK) < 0) {
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if (errno != ENOENT)
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return -errno;
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||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
static bool user_unit_active(User *u) {
|
||
const char *i;
|
||
int r;
|
||
|
||
assert(u->service);
|
||
assert(u->runtime_dir_service);
|
||
assert(u->slice);
|
||
|
||
FOREACH_STRING(i, u->service, u->runtime_dir_service, u->slice) {
|
||
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
|
||
|
||
r = manager_unit_is_active(u->manager, i, &error);
|
||
if (r < 0)
|
||
log_debug_errno(r, "Failed to determine whether unit '%s' is active, ignoring: %s", u->service, bus_error_message(&error, r));
|
||
if (r != 0)
|
||
return true;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
bool user_may_gc(User *u, bool drop_not_started) {
|
||
int r;
|
||
|
||
assert(u);
|
||
|
||
if (drop_not_started && !u->started)
|
||
return true;
|
||
|
||
if (u->sessions)
|
||
return false;
|
||
|
||
if (u->last_session_timestamp != USEC_INFINITY) {
|
||
/* All sessions have been closed. Let's see if we shall leave the user record around for a bit */
|
||
|
||
if (u->manager->user_stop_delay == USEC_INFINITY)
|
||
return false; /* Leave it around forever! */
|
||
if (u->manager->user_stop_delay > 0 &&
|
||
now(CLOCK_MONOTONIC) < usec_add(u->last_session_timestamp, u->manager->user_stop_delay))
|
||
return false; /* Leave it around for a bit longer. */
|
||
}
|
||
|
||
/* Is this a user that shall stay around forever ("linger")? Before we say "no" to GC'ing for lingering users, let's check
|
||
* if any of the three units that we maintain for this user is still around. If none of them is,
|
||
* there's no need to keep this user around even if lingering is enabled. */
|
||
if (user_check_linger_file(u) > 0 && user_unit_active(u))
|
||
return false;
|
||
|
||
/* Check if our job is still pending */
|
||
if (u->service_job) {
|
||
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
|
||
|
||
r = manager_job_is_active(u->manager, u->service_job, &error);
|
||
if (r < 0)
|
||
log_debug_errno(r, "Failed to determine whether job '%s' is pending, ignoring: %s", u->service_job, bus_error_message(&error, r));
|
||
if (r != 0)
|
||
return false;
|
||
}
|
||
|
||
/* Note that we don't care if the three units we manage for each user object are up or not, as we are managing
|
||
* their state rather than tracking it. */
|
||
|
||
return true;
|
||
}
|
||
|
||
void user_add_to_gc_queue(User *u) {
|
||
assert(u);
|
||
|
||
if (u->in_gc_queue)
|
||
return;
|
||
|
||
LIST_PREPEND(gc_queue, u->manager->user_gc_queue, u);
|
||
u->in_gc_queue = true;
|
||
}
|
||
|
||
UserState user_get_state(User *u) {
|
||
Session *i;
|
||
|
||
assert(u);
|
||
|
||
if (u->stopping)
|
||
return USER_CLOSING;
|
||
|
||
if (!u->started || u->service_job)
|
||
return USER_OPENING;
|
||
|
||
if (u->sessions) {
|
||
bool all_closing = true;
|
||
|
||
LIST_FOREACH(sessions_by_user, i, u->sessions) {
|
||
SessionState state;
|
||
|
||
state = session_get_state(i);
|
||
if (state == SESSION_ACTIVE)
|
||
return USER_ACTIVE;
|
||
if (state != SESSION_CLOSING)
|
||
all_closing = false;
|
||
}
|
||
|
||
return all_closing ? USER_CLOSING : USER_ONLINE;
|
||
}
|
||
|
||
if (user_check_linger_file(u) > 0 && user_unit_active(u))
|
||
return USER_LINGERING;
|
||
|
||
return USER_CLOSING;
|
||
}
|
||
|
||
int user_kill(User *u, int signo) {
|
||
assert(u);
|
||
|
||
return manager_kill_unit(u->manager, u->slice, KILL_ALL, signo, NULL);
|
||
}
|
||
|
||
static bool elect_display_filter(Session *s) {
|
||
/* Return true if the session is a candidate for the user’s ‘primary session’ or ‘display’. */
|
||
assert(s);
|
||
|
||
return s->class == SESSION_USER && s->started && !s->stopping;
|
||
}
|
||
|
||
static int elect_display_compare(Session *s1, Session *s2) {
|
||
/* Indexed by SessionType. Lower numbers mean more preferred. */
|
||
const int type_ranks[_SESSION_TYPE_MAX] = {
|
||
[SESSION_UNSPECIFIED] = 0,
|
||
[SESSION_TTY] = -2,
|
||
[SESSION_X11] = -3,
|
||
[SESSION_WAYLAND] = -3,
|
||
[SESSION_MIR] = -3,
|
||
[SESSION_WEB] = -1,
|
||
};
|
||
|
||
/* Calculate the partial order relationship between s1 and s2,
|
||
* returning < 0 if s1 is preferred as the user’s ‘primary session’,
|
||
* 0 if s1 and s2 are equally preferred or incomparable, or > 0 if s2
|
||
* is preferred.
|
||
*
|
||
* s1 or s2 may be NULL. */
|
||
if (!s1 && !s2)
|
||
return 0;
|
||
|
||
if ((s1 == NULL) != (s2 == NULL))
|
||
return (s1 == NULL) - (s2 == NULL);
|
||
|
||
if (s1->stopping != s2->stopping)
|
||
return s1->stopping - s2->stopping;
|
||
|
||
if ((s1->class != SESSION_USER) != (s2->class != SESSION_USER))
|
||
return (s1->class != SESSION_USER) - (s2->class != SESSION_USER);
|
||
|
||
if ((s1->type == _SESSION_TYPE_INVALID) != (s2->type == _SESSION_TYPE_INVALID))
|
||
return (s1->type == _SESSION_TYPE_INVALID) - (s2->type == _SESSION_TYPE_INVALID);
|
||
|
||
if (s1->type != s2->type)
|
||
return type_ranks[s1->type] - type_ranks[s2->type];
|
||
|
||
return 0;
|
||
}
|
||
|
||
void user_elect_display(User *u) {
|
||
Session *s;
|
||
|
||
assert(u);
|
||
|
||
/* This elects a primary session for each user, which we call the "display". We try to keep the assignment
|
||
* stable, but we "upgrade" to better choices. */
|
||
log_debug("Electing new display for user %s", u->name);
|
||
|
||
LIST_FOREACH(sessions_by_user, s, u->sessions) {
|
||
if (!elect_display_filter(s)) {
|
||
log_debug("Ignoring session %s", s->id);
|
||
continue;
|
||
}
|
||
|
||
if (elect_display_compare(s, u->display) < 0) {
|
||
log_debug("Choosing session %s in preference to %s", s->id, u->display ? u->display->id : "-");
|
||
u->display = s;
|
||
}
|
||
}
|
||
}
|
||
|
||
static int user_stop_timeout_callback(sd_event_source *es, uint64_t usec, void *userdata) {
|
||
User *u = userdata;
|
||
|
||
assert(u);
|
||
user_add_to_gc_queue(u);
|
||
|
||
return 0;
|
||
}
|
||
|
||
void user_update_last_session_timer(User *u) {
|
||
int r;
|
||
|
||
assert(u);
|
||
|
||
if (u->sessions) {
|
||
/* There are sessions, turn off the timer */
|
||
u->last_session_timestamp = USEC_INFINITY;
|
||
u->timer_event_source = sd_event_source_unref(u->timer_event_source);
|
||
return;
|
||
}
|
||
|
||
if (u->last_session_timestamp != USEC_INFINITY)
|
||
return; /* Timer already started */
|
||
|
||
u->last_session_timestamp = now(CLOCK_MONOTONIC);
|
||
|
||
assert(!u->timer_event_source);
|
||
|
||
if (u->manager->user_stop_delay == 0 || u->manager->user_stop_delay == USEC_INFINITY)
|
||
return;
|
||
|
||
if (sd_event_get_state(u->manager->event) == SD_EVENT_FINISHED) {
|
||
log_debug("Not allocating user stop timeout, since we are already exiting.");
|
||
return;
|
||
}
|
||
|
||
r = sd_event_add_time(u->manager->event,
|
||
&u->timer_event_source,
|
||
CLOCK_MONOTONIC,
|
||
usec_add(u->last_session_timestamp, u->manager->user_stop_delay), 0,
|
||
user_stop_timeout_callback, u);
|
||
if (r < 0)
|
||
log_warning_errno(r, "Failed to enqueue user stop event source, ignoring: %m");
|
||
|
||
if (DEBUG_LOGGING) {
|
||
char s[FORMAT_TIMESPAN_MAX];
|
||
|
||
log_debug("Last session of user '%s' logged out, terminating user context in %s.",
|
||
u->name,
|
||
format_timespan(s, sizeof(s), u->manager->user_stop_delay, USEC_PER_MSEC));
|
||
}
|
||
}
|
||
|
||
static const char* const user_state_table[_USER_STATE_MAX] = {
|
||
[USER_OFFLINE] = "offline",
|
||
[USER_OPENING] = "opening",
|
||
[USER_LINGERING] = "lingering",
|
||
[USER_ONLINE] = "online",
|
||
[USER_ACTIVE] = "active",
|
||
[USER_CLOSING] = "closing"
|
||
};
|
||
|
||
DEFINE_STRING_TABLE_LOOKUP(user_state, UserState);
|
||
|
||
int config_parse_tmpfs_size(
|
||
const char* unit,
|
||
const char *filename,
|
||
unsigned line,
|
||
const char *section,
|
||
unsigned section_line,
|
||
const char *lvalue,
|
||
int ltype,
|
||
const char *rvalue,
|
||
void *data,
|
||
void *userdata) {
|
||
|
||
uint64_t *sz = data;
|
||
int r;
|
||
|
||
assert(filename);
|
||
assert(lvalue);
|
||
assert(rvalue);
|
||
assert(data);
|
||
|
||
/* First, try to parse as percentage */
|
||
r = parse_permille(rvalue);
|
||
if (r > 0 && r < 1000)
|
||
*sz = physical_memory_scale(r, 1000U);
|
||
else {
|
||
uint64_t k;
|
||
|
||
/* If the passed argument was not a percentage, or out of range, parse as byte size */
|
||
|
||
r = parse_size(rvalue, 1024, &k);
|
||
if (r >= 0 && (k <= 0 || (uint64_t) (size_t) k != k))
|
||
r = -ERANGE;
|
||
if (r < 0) {
|
||
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse size value '%s', ignoring: %m", rvalue);
|
||
return 0;
|
||
}
|
||
|
||
*sz = PAGE_ALIGN((size_t) k);
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
int config_parse_compat_user_tasks_max(
|
||
const char *unit,
|
||
const char *filename,
|
||
unsigned line,
|
||
const char *section,
|
||
unsigned section_line,
|
||
const char *lvalue,
|
||
int ltype,
|
||
const char *rvalue,
|
||
void *data,
|
||
void *userdata) {
|
||
|
||
assert(filename);
|
||
assert(lvalue);
|
||
assert(rvalue);
|
||
assert(data);
|
||
|
||
log_syntax(unit, LOG_NOTICE, filename, line, 0,
|
||
"Support for option %s= has been removed.",
|
||
lvalue);
|
||
log_info("Hint: try creating /etc/systemd/system/user-.slice.d/50-limits.conf with:\n"
|
||
" [Slice]\n"
|
||
" TasksMax=%s",
|
||
rvalue);
|
||
return 0;
|
||
}
|