| /*** |
| This file is part of systemd. |
| |
| Copyright 2016 Lennart Poettering |
| |
| systemd is free software; you can redistribute it and/or modify it |
| under the terms of the GNU Lesser General Public License as published by |
| the Free Software Foundation; either version 2.1 of the License, or |
| (at your option) any later version. |
| |
| systemd is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public License |
| along with systemd; If not, see <http://www.gnu.org/licenses/>. |
| ***/ |
| |
| #include "alloc-util.h" |
| #include "bus-internal.h" |
| #include "bus-unit-util.h" |
| #include "bus-util.h" |
| #include "cgroup-util.h" |
| #include "env-util.h" |
| #include "escape.h" |
| #include "hashmap.h" |
| #include "list.h" |
| #include "locale-util.h" |
| #include "parse-util.h" |
| #include "path-util.h" |
| #include "process-util.h" |
| #include "rlimit-util.h" |
| #include "signal-util.h" |
| #include "string-util.h" |
| #include "syslog-util.h" |
| #include "terminal-util.h" |
| #include "utf8.h" |
| #include "util.h" |
| |
| int bus_parse_unit_info(sd_bus_message *message, UnitInfo *u) { |
| assert(message); |
| assert(u); |
| |
| u->machine = NULL; |
| |
| return sd_bus_message_read( |
| message, |
| "(ssssssouso)", |
| &u->id, |
| &u->description, |
| &u->load_state, |
| &u->active_state, |
| &u->sub_state, |
| &u->following, |
| &u->unit_path, |
| &u->job_id, |
| &u->job_type, |
| &u->job_path); |
| } |
| |
| int bus_append_unit_property_assignment(sd_bus_message *m, const char *assignment) { |
| const char *eq, *field; |
| int r, rl; |
| |
| assert(m); |
| assert(assignment); |
| |
| eq = strchr(assignment, '='); |
| if (!eq) { |
| log_error("Not an assignment: %s", assignment); |
| return -EINVAL; |
| } |
| |
| r = sd_bus_message_open_container(m, SD_BUS_TYPE_STRUCT, "sv"); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| field = strndupa(assignment, eq - assignment); |
| eq++; |
| |
| if (streq(field, "CPUQuota")) { |
| |
| if (isempty(eq)) |
| r = sd_bus_message_append(m, "sv", "CPUQuotaPerSecUSec", "t", USEC_INFINITY); |
| else { |
| r = parse_percent_unbounded(eq); |
| if (r <= 0) { |
| log_error_errno(r, "CPU quota '%s' invalid.", eq); |
| return -EINVAL; |
| } |
| |
| r = sd_bus_message_append(m, "sv", "CPUQuotaPerSecUSec", "t", (usec_t) r * USEC_PER_SEC / 100U); |
| } |
| |
| goto finish; |
| |
| } else if (streq(field, "EnvironmentFile")) { |
| |
| r = sd_bus_message_append(m, "sv", "EnvironmentFiles", "a(sb)", 1, |
| eq[0] == '-' ? eq + 1 : eq, |
| eq[0] == '-'); |
| goto finish; |
| |
| } else if (STR_IN_SET(field, "AccuracySec", "RandomizedDelaySec", "RuntimeMaxSec")) { |
| char *n; |
| usec_t t; |
| size_t l; |
| |
| r = parse_sec(eq, &t); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse %s= parameter: %s", field, eq); |
| |
| l = strlen(field); |
| n = newa(char, l + 2); |
| if (!n) |
| return log_oom(); |
| |
| /* Change suffix Sec → USec */ |
| strcpy(mempcpy(n, field, l - 3), "USec"); |
| r = sd_bus_message_append(m, "sv", n, "t", t); |
| goto finish; |
| |
| } else if (STR_IN_SET(field, "MemoryLow", "MemoryHigh", "MemoryMax", "MemoryLimit")) { |
| uint64_t bytes; |
| |
| if (isempty(eq) || streq(eq, "infinity")) |
| bytes = CGROUP_LIMIT_MAX; |
| else { |
| r = parse_percent(eq); |
| if (r >= 0) { |
| char *n; |
| |
| /* When this is a percentage we'll convert this into a relative value in the range |
| * 0…UINT32_MAX and pass it in the MemoryLowScale property (and related |
| * ones). This way the physical memory size can be determined server-side */ |
| |
| n = strjoina(field, "Scale"); |
| r = sd_bus_message_append(m, "sv", n, "u", (uint32_t) (((uint64_t) UINT32_MAX * r) / 100U)); |
| goto finish; |
| |
| } else { |
| r = parse_size(eq, 1024, &bytes); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse bytes specification %s", assignment); |
| } |
| } |
| |
| r = sd_bus_message_append(m, "sv", field, "t", bytes); |
| goto finish; |
| } else if (streq(field, "TasksMax")) { |
| uint64_t t; |
| |
| if (isempty(eq) || streq(eq, "infinity")) |
| t = (uint64_t) -1; |
| else { |
| r = parse_percent(eq); |
| if (r >= 0) { |
| r = sd_bus_message_append(m, "sv", "TasksMaxScale", "u", (uint32_t) (((uint64_t) UINT32_MAX * r) / 100U)); |
| goto finish; |
| } else { |
| r = safe_atou64(eq, &t); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse maximum tasks specification %s", assignment); |
| } |
| |
| } |
| |
| r = sd_bus_message_append(m, "sv", "TasksMax", "t", t); |
| goto finish; |
| } |
| |
| r = sd_bus_message_append_basic(m, SD_BUS_TYPE_STRING, field); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| rl = rlimit_from_string(field); |
| if (rl >= 0) { |
| const char *sn; |
| struct rlimit l; |
| |
| r = rlimit_parse(rl, eq, &l); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse resource limit: %s", eq); |
| |
| r = sd_bus_message_append(m, "v", "t", l.rlim_max); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| r = sd_bus_message_close_container(m); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| r = sd_bus_message_open_container(m, SD_BUS_TYPE_STRUCT, "sv"); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| sn = strjoina(field, "Soft"); |
| r = sd_bus_message_append(m, "sv", sn, "t", l.rlim_cur); |
| |
| } else if (STR_IN_SET(field, |
| "CPUAccounting", "MemoryAccounting", "IOAccounting", "BlockIOAccounting", "TasksAccounting", |
| "SendSIGHUP", "SendSIGKILL", "WakeSystem", "DefaultDependencies", |
| "IgnoreSIGPIPE", "TTYVHangup", "TTYReset", "RemainAfterExit", |
| "PrivateTmp", "PrivateDevices", "PrivateNetwork", "PrivateUsers", "NoNewPrivileges", |
| "SyslogLevelPrefix", "Delegate", "RemainAfterElapse", "MemoryDenyWriteExecute", |
| "RestrictRealtime", "DynamicUser", "RemoveIPC", "ProtectKernelTunables", |
| "ProtectKernelModules", "ProtectControlGroups")) { |
| |
| r = parse_boolean(eq); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse boolean assignment %s.", assignment); |
| |
| r = sd_bus_message_append(m, "v", "b", r); |
| |
| } else if (STR_IN_SET(field, "CPUWeight", "StartupCPUWeight")) { |
| uint64_t u; |
| |
| r = cg_weight_parse(eq, &u); |
| if (r < 0) { |
| log_error("Failed to parse %s value %s.", field, eq); |
| return -EINVAL; |
| } |
| |
| r = sd_bus_message_append(m, "v", "t", u); |
| |
| } else if (STR_IN_SET(field, "CPUShares", "StartupCPUShares")) { |
| uint64_t u; |
| |
| r = cg_cpu_shares_parse(eq, &u); |
| if (r < 0) { |
| log_error("Failed to parse %s value %s.", field, eq); |
| return -EINVAL; |
| } |
| |
| r = sd_bus_message_append(m, "v", "t", u); |
| |
| } else if (STR_IN_SET(field, "IOWeight", "StartupIOWeight")) { |
| uint64_t u; |
| |
| r = cg_weight_parse(eq, &u); |
| if (r < 0) { |
| log_error("Failed to parse %s value %s.", field, eq); |
| return -EINVAL; |
| } |
| |
| r = sd_bus_message_append(m, "v", "t", u); |
| |
| } else if (STR_IN_SET(field, "BlockIOWeight", "StartupBlockIOWeight")) { |
| uint64_t u; |
| |
| r = cg_blkio_weight_parse(eq, &u); |
| if (r < 0) { |
| log_error("Failed to parse %s value %s.", field, eq); |
| return -EINVAL; |
| } |
| |
| r = sd_bus_message_append(m, "v", "t", u); |
| |
| } else if (STR_IN_SET(field, |
| "User", "Group", "DevicePolicy", "KillMode", |
| "UtmpIdentifier", "UtmpMode", "PAMName", "TTYPath", |
| "StandardInput", "StandardOutput", "StandardError", |
| "Description", "Slice", "Type", "WorkingDirectory", |
| "RootDirectory", "SyslogIdentifier", "ProtectSystem", |
| "ProtectHome", "SELinuxContext")) |
| r = sd_bus_message_append(m, "v", "s", eq); |
| |
| else if (streq(field, "SyslogLevel")) { |
| int level; |
| |
| level = log_level_from_string(eq); |
| if (level < 0) { |
| log_error("Failed to parse %s value %s.", field, eq); |
| return -EINVAL; |
| } |
| |
| r = sd_bus_message_append(m, "v", "i", level); |
| |
| } else if (streq(field, "SyslogFacility")) { |
| int facility; |
| |
| facility = log_facility_unshifted_from_string(eq); |
| if (facility < 0) { |
| log_error("Failed to parse %s value %s.", field, eq); |
| return -EINVAL; |
| } |
| |
| r = sd_bus_message_append(m, "v", "i", facility); |
| |
| } else if (streq(field, "DeviceAllow")) { |
| |
| if (isempty(eq)) |
| r = sd_bus_message_append(m, "v", "a(ss)", 0); |
| else { |
| const char *path, *rwm, *e; |
| |
| e = strchr(eq, ' '); |
| if (e) { |
| path = strndupa(eq, e - eq); |
| rwm = e+1; |
| } else { |
| path = eq; |
| rwm = ""; |
| } |
| |
| if (!is_deviceallow_pattern(path)) { |
| log_error("%s is not a device file in /dev.", path); |
| return -EINVAL; |
| } |
| |
| r = sd_bus_message_append(m, "v", "a(ss)", 1, path, rwm); |
| } |
| |
| } else if (cgroup_io_limit_type_from_string(field) >= 0 || STR_IN_SET(field, "BlockIOReadBandwidth", "BlockIOWriteBandwidth")) { |
| |
| if (isempty(eq)) |
| r = sd_bus_message_append(m, "v", "a(st)", 0); |
| else { |
| const char *path, *bandwidth, *e; |
| uint64_t bytes; |
| |
| e = strchr(eq, ' '); |
| if (e) { |
| path = strndupa(eq, e - eq); |
| bandwidth = e+1; |
| } else { |
| log_error("Failed to parse %s value %s.", field, eq); |
| return -EINVAL; |
| } |
| |
| if (!path_startswith(path, "/dev")) { |
| log_error("%s is not a device file in /dev.", path); |
| return -EINVAL; |
| } |
| |
| if (streq(bandwidth, "infinity")) { |
| bytes = CGROUP_LIMIT_MAX; |
| } else { |
| r = parse_size(bandwidth, 1000, &bytes); |
| if (r < 0) { |
| log_error("Failed to parse byte value %s.", bandwidth); |
| return -EINVAL; |
| } |
| } |
| |
| r = sd_bus_message_append(m, "v", "a(st)", 1, path, bytes); |
| } |
| |
| } else if (STR_IN_SET(field, "IODeviceWeight", "BlockIODeviceWeight")) { |
| |
| if (isempty(eq)) |
| r = sd_bus_message_append(m, "v", "a(st)", 0); |
| else { |
| const char *path, *weight, *e; |
| uint64_t u; |
| |
| e = strchr(eq, ' '); |
| if (e) { |
| path = strndupa(eq, e - eq); |
| weight = e+1; |
| } else { |
| log_error("Failed to parse %s value %s.", field, eq); |
| return -EINVAL; |
| } |
| |
| if (!path_startswith(path, "/dev")) { |
| log_error("%s is not a device file in /dev.", path); |
| return -EINVAL; |
| } |
| |
| r = safe_atou64(weight, &u); |
| if (r < 0) { |
| log_error("Failed to parse %s value %s.", field, weight); |
| return -EINVAL; |
| } |
| r = sd_bus_message_append(m, "v", "a(st)", 1, path, u); |
| } |
| |
| } else if (streq(field, "Nice")) { |
| int n; |
| |
| r = parse_nice(eq, &n); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse nice value: %s", eq); |
| |
| r = sd_bus_message_append(m, "v", "i", (int32_t) n); |
| |
| } else if (STR_IN_SET(field, "Environment", "PassEnvironment")) { |
| const char *p; |
| |
| r = sd_bus_message_open_container(m, 'v', "as"); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| r = sd_bus_message_open_container(m, 'a', "s"); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| p = eq; |
| |
| for (;;) { |
| _cleanup_free_ char *word = NULL; |
| |
| r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE); |
| if (r < 0) { |
| log_error("Failed to parse Environment value %s", eq); |
| return -EINVAL; |
| } |
| if (r == 0) |
| break; |
| |
| if (streq(field, "Environment")) { |
| if (!env_assignment_is_valid(word)) { |
| log_error("Invalid environment assignment: %s", word); |
| return -EINVAL; |
| } |
| } else { /* PassEnvironment */ |
| if (!env_name_is_valid(word)) { |
| log_error("Invalid environment variable name: %s", word); |
| return -EINVAL; |
| } |
| } |
| |
| r = sd_bus_message_append_basic(m, 's', word); |
| if (r < 0) |
| return bus_log_create_error(r); |
| } |
| |
| r = sd_bus_message_close_container(m); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| r = sd_bus_message_close_container(m); |
| |
| } else if (streq(field, "KillSignal")) { |
| int sig; |
| |
| sig = signal_from_string_try_harder(eq); |
| if (sig < 0) { |
| log_error("Failed to parse %s value %s.", field, eq); |
| return -EINVAL; |
| } |
| |
| r = sd_bus_message_append(m, "v", "i", sig); |
| |
| } else if (streq(field, "TimerSlackNSec")) { |
| nsec_t n; |
| |
| r = parse_nsec(eq, &n); |
| if (r < 0) { |
| log_error("Failed to parse %s value %s", field, eq); |
| return -EINVAL; |
| } |
| |
| r = sd_bus_message_append(m, "v", "t", n); |
| } else if (streq(field, "OOMScoreAdjust")) { |
| int oa; |
| |
| r = safe_atoi(eq, &oa); |
| if (r < 0) { |
| log_error("Failed to parse %s value %s", field, eq); |
| return -EINVAL; |
| } |
| |
| if (!oom_score_adjust_is_valid(oa)) { |
| log_error("OOM score adjust value out of range"); |
| return -EINVAL; |
| } |
| |
| r = sd_bus_message_append(m, "v", "i", oa); |
| } else if (STR_IN_SET(field, "ReadWriteDirectories", "ReadOnlyDirectories", "InaccessibleDirectories", |
| "ReadWritePaths", "ReadOnlyPaths", "InaccessiblePaths")) { |
| const char *p; |
| |
| r = sd_bus_message_open_container(m, 'v', "as"); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| r = sd_bus_message_open_container(m, 'a', "s"); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| p = eq; |
| |
| for (;;) { |
| _cleanup_free_ char *word = NULL; |
| int offset; |
| |
| r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES); |
| if (r < 0) { |
| log_error("Failed to parse %s value %s", field, eq); |
| return -EINVAL; |
| } |
| if (r == 0) |
| break; |
| |
| if (!utf8_is_valid(word)) { |
| log_error("Failed to parse %s value %s", field, eq); |
| return -EINVAL; |
| } |
| |
| offset = word[0] == '-'; |
| if (!path_is_absolute(word + offset)) { |
| log_error("Failed to parse %s value %s", field, eq); |
| return -EINVAL; |
| } |
| |
| path_kill_slashes(word + offset); |
| |
| r = sd_bus_message_append_basic(m, 's', word); |
| if (r < 0) |
| return bus_log_create_error(r); |
| } |
| |
| r = sd_bus_message_close_container(m); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| r = sd_bus_message_close_container(m); |
| |
| } else if (streq(field, "RuntimeDirectory")) { |
| const char *p; |
| |
| r = sd_bus_message_open_container(m, 'v', "as"); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| r = sd_bus_message_open_container(m, 'a', "s"); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| p = eq; |
| |
| for (;;) { |
| _cleanup_free_ char *word = NULL; |
| |
| r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES); |
| if (r < 0) |
| return log_error_errno(r, "Failed to parse %s value %s", field, eq); |
| |
| if (r == 0) |
| break; |
| |
| r = sd_bus_message_append_basic(m, 's', word); |
| if (r < 0) |
| return bus_log_create_error(r); |
| } |
| |
| r = sd_bus_message_close_container(m); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| r = sd_bus_message_close_container(m); |
| |
| } else { |
| log_error("Unknown assignment %s.", assignment); |
| return -EINVAL; |
| } |
| |
| finish: |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| r = sd_bus_message_close_container(m); |
| if (r < 0) |
| return bus_log_create_error(r); |
| |
| return 0; |
| } |
| |
| int bus_append_unit_property_assignment_many(sd_bus_message *m, char **l) { |
| char **i; |
| int r; |
| |
| assert(m); |
| |
| STRV_FOREACH(i, l) { |
| r = bus_append_unit_property_assignment(m, *i); |
| if (r < 0) |
| return r; |
| } |
| |
| return 0; |
| } |
| |
| typedef struct BusWaitForJobs { |
| sd_bus *bus; |
| Set *jobs; |
| |
| char *name; |
| char *result; |
| |
| sd_bus_slot *slot_job_removed; |
| sd_bus_slot *slot_disconnected; |
| } BusWaitForJobs; |
| |
| static int match_disconnected(sd_bus_message *m, void *userdata, sd_bus_error *error) { |
| assert(m); |
| |
| log_error("Warning! D-Bus connection terminated."); |
| sd_bus_close(sd_bus_message_get_bus(m)); |
| |
| return 0; |
| } |
| |
| static int match_job_removed(sd_bus_message *m, void *userdata, sd_bus_error *error) { |
| const char *path, *unit, *result; |
| BusWaitForJobs *d = userdata; |
| uint32_t id; |
| char *found; |
| int r; |
| |
| assert(m); |
| assert(d); |
| |
| r = sd_bus_message_read(m, "uoss", &id, &path, &unit, &result); |
| if (r < 0) { |
| bus_log_parse_error(r); |
| return 0; |
| } |
| |
| found = set_remove(d->jobs, (char*) path); |
| if (!found) |
| return 0; |
| |
| free(found); |
| |
| if (!isempty(result)) |
| d->result = strdup(result); |
| |
| if (!isempty(unit)) |
| d->name = strdup(unit); |
| |
| return 0; |
| } |
| |
| void bus_wait_for_jobs_free(BusWaitForJobs *d) { |
| if (!d) |
| return; |
| |
| set_free_free(d->jobs); |
| |
| sd_bus_slot_unref(d->slot_disconnected); |
| sd_bus_slot_unref(d->slot_job_removed); |
| |
| sd_bus_unref(d->bus); |
| |
| free(d->name); |
| free(d->result); |
| |
| free(d); |
| } |
| |
| int bus_wait_for_jobs_new(sd_bus *bus, BusWaitForJobs **ret) { |
| _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *d = NULL; |
| int r; |
| |
| assert(bus); |
| assert(ret); |
| |
| d = new0(BusWaitForJobs, 1); |
| if (!d) |
| return -ENOMEM; |
| |
| d->bus = sd_bus_ref(bus); |
| |
| /* When we are a bus client we match by sender. Direct |
| * connections OTOH have no initialized sender field, and |
| * hence we ignore the sender then */ |
| r = sd_bus_add_match( |
| bus, |
| &d->slot_job_removed, |
| bus->bus_client ? |
| "type='signal'," |
| "sender='org.freedesktop.systemd1'," |
| "interface='org.freedesktop.systemd1.Manager'," |
| "member='JobRemoved'," |
| "path='/org/freedesktop/systemd1'" : |
| "type='signal'," |
| "interface='org.freedesktop.systemd1.Manager'," |
| "member='JobRemoved'," |
| "path='/org/freedesktop/systemd1'", |
| match_job_removed, d); |
| if (r < 0) |
| return r; |
| |
| r = sd_bus_add_match( |
| bus, |
| &d->slot_disconnected, |
| "type='signal'," |
| "sender='org.freedesktop.DBus.Local'," |
| "interface='org.freedesktop.DBus.Local'," |
| "member='Disconnected'", |
| match_disconnected, d); |
| if (r < 0) |
| return r; |
| |
| *ret = d; |
| d = NULL; |
| |
| return 0; |
| } |
| |
| static int bus_process_wait(sd_bus *bus) { |
| int r; |
| |
| for (;;) { |
| r = sd_bus_process(bus, NULL); |
| if (r < 0) |
| return r; |
| if (r > 0) |
| return 0; |
| |
| r = sd_bus_wait(bus, (uint64_t) -1); |
| if (r < 0) |
| return r; |
| } |
| } |
| |
| static int bus_job_get_service_result(BusWaitForJobs *d, char **result) { |
| _cleanup_free_ char *dbus_path = NULL; |
| |
| assert(d); |
| assert(d->name); |
| assert(result); |
| |
| dbus_path = unit_dbus_path_from_name(d->name); |
| if (!dbus_path) |
| return -ENOMEM; |
| |
| return sd_bus_get_property_string(d->bus, |
| "org.freedesktop.systemd1", |
| dbus_path, |
| "org.freedesktop.systemd1.Service", |
| "Result", |
| NULL, |
| result); |
| } |
| |
| static const struct { |
| const char *result, *explanation; |
| } explanations [] = { |
| { "resources", "of unavailable resources or another system error" }, |
| { "timeout", "a timeout was exceeded" }, |
| { "exit-code", "the control process exited with error code" }, |
| { "signal", "a fatal signal was delivered to the control process" }, |
| { "core-dump", "a fatal signal was delivered causing the control process to dump core" }, |
| { "watchdog", "the service failed to send watchdog ping" }, |
| { "start-limit", "start of the service was attempted too often" } |
| }; |
| |
| static void log_job_error_with_service_result(const char* service, const char *result, const char* const* extra_args) { |
| _cleanup_free_ char *service_shell_quoted = NULL; |
| const char *systemctl = "systemctl", *journalctl = "journalctl"; |
| |
| assert(service); |
| |
| service_shell_quoted = shell_maybe_quote(service); |
| |
| if (extra_args && extra_args[1]) { |
| _cleanup_free_ char *t; |
| |
| t = strv_join((char**) extra_args, " "); |
| systemctl = strjoina("systemctl ", t ? : "<args>"); |
| journalctl = strjoina("journalctl ", t ? : "<args>"); |
| } |
| |
| if (!isempty(result)) { |
| unsigned i; |
| |
| for (i = 0; i < ELEMENTSOF(explanations); ++i) |
| if (streq(result, explanations[i].result)) |
| break; |
| |
| if (i < ELEMENTSOF(explanations)) { |
| log_error("Job for %s failed because %s.\n" |
| "See \"%s status %s\" and \"%s -xe\" for details.\n", |
| service, |
| explanations[i].explanation, |
| systemctl, |
| service_shell_quoted ?: "<service>", |
| journalctl); |
| goto finish; |
| } |
| } |
| |
| log_error("Job for %s failed.\n" |
| "See \"%s status %s\" and \"%s -xe\" for details.\n", |
| service, |
| systemctl, |
| service_shell_quoted ?: "<service>", |
| journalctl); |
| |
| finish: |
| /* For some results maybe additional explanation is required */ |
| if (streq_ptr(result, "start-limit")) |
| log_info("To force a start use \"%1$s reset-failed %2$s\"\n" |
| "followed by \"%1$s start %2$s\" again.", |
| systemctl, |
| service_shell_quoted ?: "<service>"); |
| } |
| |
| static int check_wait_response(BusWaitForJobs *d, bool quiet, const char* const* extra_args) { |
| int r = 0; |
| |
| assert(d->result); |
| |
| if (!quiet) { |
| if (streq(d->result, "canceled")) |
| log_error("Job for %s canceled.", strna(d->name)); |
| else if (streq(d->result, "timeout")) |
| log_error("Job for %s timed out.", strna(d->name)); |
| else if (streq(d->result, "dependency")) |
| log_error("A dependency job for %s failed. See 'journalctl -xe' for details.", strna(d->name)); |
| else if (streq(d->result, "invalid")) |
| log_error("%s is not active, cannot reload.", strna(d->name)); |
| else if (streq(d->result, "assert")) |
| log_error("Assertion failed on job for %s.", strna(d->name)); |
| else if (streq(d->result, "unsupported")) |
| log_error("Operation on or unit type of %s not supported on this system.", strna(d->name)); |
| else if (!streq(d->result, "done") && !streq(d->result, "skipped")) { |
| if (d->name) { |
| int q; |
| _cleanup_free_ char *result = NULL; |
| |
| q = bus_job_get_service_result(d, &result); |
| if (q < 0) |
| log_debug_errno(q, "Failed to get Result property of service %s: %m", d->name); |
| |
| log_job_error_with_service_result(d->name, result, extra_args); |
| } else |
| log_error("Job failed. See \"journalctl -xe\" for details."); |
| } |
| } |
| |
| if (streq(d->result, "canceled")) |
| r = -ECANCELED; |
| else if (streq(d->result, "timeout")) |
| r = -ETIME; |
| else if (streq(d->result, "dependency")) |
| r = -EIO; |
| else if (streq(d->result, "invalid")) |
| r = -ENOEXEC; |
| else if (streq(d->result, "assert")) |
| r = -EPROTO; |
| else if (streq(d->result, "unsupported")) |
| r = -EOPNOTSUPP; |
| else if (!streq(d->result, "done") && !streq(d->result, "skipped")) |
| r = -EIO; |
| |
| return r; |
| } |
| |
| int bus_wait_for_jobs(BusWaitForJobs *d, bool quiet, const char* const* extra_args) { |
| int r = 0; |
| |
| assert(d); |
| |
| while (!set_isempty(d->jobs)) { |
| int q; |
| |
| q = bus_process_wait(d->bus); |
| if (q < 0) |
| return log_error_errno(q, "Failed to wait for response: %m"); |
| |
| if (d->result) { |
| q = check_wait_response(d, quiet, extra_args); |
| /* Return the first error as it is most likely to be |
| * meaningful. */ |
| if (q < 0 && r == 0) |
| r = q; |
| |
| log_debug_errno(q, "Got result %s/%m for job %s", strna(d->result), strna(d->name)); |
| } |
| |
| d->name = mfree(d->name); |
| d->result = mfree(d->result); |
| } |
| |
| return r; |
| } |
| |
| int bus_wait_for_jobs_add(BusWaitForJobs *d, const char *path) { |
| int r; |
| |
| assert(d); |
| |
| r = set_ensure_allocated(&d->jobs, &string_hash_ops); |
| if (r < 0) |
| return r; |
| |
| return set_put_strdup(d->jobs, path); |
| } |
| |
| int bus_wait_for_jobs_one(BusWaitForJobs *d, const char *path, bool quiet) { |
| int r; |
| |
| r = bus_wait_for_jobs_add(d, path); |
| if (r < 0) |
| return log_oom(); |
| |
| return bus_wait_for_jobs(d, quiet, NULL); |
| } |
| |
| int bus_deserialize_and_dump_unit_file_changes(sd_bus_message *m, bool quiet, UnitFileChange **changes, unsigned *n_changes) { |
| const char *type, *path, *source; |
| int r; |
| |
| /* changes is dereferenced when calling unit_file_dump_changes() later, |
| * so we have to make sure this is not NULL. */ |
| assert(changes); |
| assert(n_changes); |
| |
| r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sss)"); |
| if (r < 0) |
| return bus_log_parse_error(r); |
| |
| while ((r = sd_bus_message_read(m, "(sss)", &type, &path, &source)) > 0) { |
| /* We expect only "success" changes to be sent over the bus. |
| Hence, reject anything negative. */ |
| UnitFileChangeType ch = unit_file_change_type_from_string(type); |
| |
| if (ch < 0) { |
| log_notice("Manager reported unknown change type \"%s\" for path \"%s\", ignoring.", type, path); |
| continue; |
| } |
| |
| r = unit_file_changes_add(changes, n_changes, ch, path, source); |
| if (r < 0) |
| return r; |
| } |
| if (r < 0) |
| return bus_log_parse_error(r); |
| |
| r = sd_bus_message_exit_container(m); |
| if (r < 0) |
| return bus_log_parse_error(r); |
| |
| unit_file_dump_changes(0, NULL, *changes, *n_changes, false); |
| return 0; |
| } |
| |
| struct CGroupInfo { |
| char *cgroup_path; |
| bool is_const; /* If false, cgroup_path should be free()'d */ |
| |
| Hashmap *pids; /* PID → process name */ |
| bool done; |
| |
| struct CGroupInfo *parent; |
| LIST_FIELDS(struct CGroupInfo, siblings); |
| LIST_HEAD(struct CGroupInfo, children); |
| size_t n_children; |
| }; |
| |
| static bool IS_ROOT(const char *p) { |
| return isempty(p) || streq(p, "/"); |
| } |
| |
| static int add_cgroup(Hashmap *cgroups, const char *path, bool is_const, struct CGroupInfo **ret) { |
| struct CGroupInfo *parent = NULL, *cg; |
| int r; |
| |
| assert(cgroups); |
| assert(ret); |
| |
| if (IS_ROOT(path)) |
| path = "/"; |
| |
| cg = hashmap_get(cgroups, path); |
| if (cg) { |
| *ret = cg; |
| return 0; |
| } |
| |
| if (!IS_ROOT(path)) { |
| const char *e, *pp; |
| |
| e = strrchr(path, '/'); |
| if (!e) |
| return -EINVAL; |
| |
| pp = strndupa(path, e - path); |
| if (!pp) |
| return -ENOMEM; |
| |
| r = add_cgroup(cgroups, pp, false, &parent); |
| if (r < 0) |
| return r; |
| } |
| |
| cg = new0(struct CGroupInfo, 1); |
| if (!cg) |
| return -ENOMEM; |
| |
| if (is_const) |
| cg->cgroup_path = (char*) path; |
| else { |
| cg->cgroup_path = strdup(path); |
| if (!cg->cgroup_path) { |
| free(cg); |
| return -ENOMEM; |
| } |
| } |
| |
| cg->is_const = is_const; |
| cg->parent = parent; |
| |
| r = hashmap_put(cgroups, cg->cgroup_path, cg); |
| if (r < 0) { |
| if (!is_const) |
| free(cg->cgroup_path); |
| free(cg); |
| return r; |
| } |
| |
| if (parent) { |
| LIST_PREPEND(siblings, parent->children, cg); |
| parent->n_children++; |
| } |
| |
| *ret = cg; |
| return 1; |
| } |
| |
| static int add_process( |
| Hashmap *cgroups, |
| const char *path, |
| pid_t pid, |
| const char *name) { |
| |
| struct CGroupInfo *cg; |
| int r; |
| |
| assert(cgroups); |
| assert(name); |
| assert(pid > 0); |
| |
| r = add_cgroup(cgroups, path, true, &cg); |
| if (r < 0) |
| return r; |
| |
| r = hashmap_ensure_allocated(&cg->pids, &trivial_hash_ops); |
| if (r < 0) |
| return r; |
| |
| return hashmap_put(cg->pids, PID_TO_PTR(pid), (void*) name); |
| } |
| |
| static void remove_cgroup(Hashmap *cgroups, struct CGroupInfo *cg) { |
| assert(cgroups); |
| assert(cg); |
| |
| while (cg->children) |
| remove_cgroup(cgroups, cg->children); |
| |
| hashmap_remove(cgroups, cg->cgroup_path); |
| |
| if (!cg->is_const) |
| free(cg->cgroup_path); |
| |
| hashmap_free(cg->pids); |
| |
| if (cg->parent) |
| LIST_REMOVE(siblings, cg->parent->children, cg); |
| |
| free(cg); |
| } |
| |
| static int cgroup_info_compare_func(const void *a, const void *b) { |
| const struct CGroupInfo *x = *(const struct CGroupInfo* const*) a, *y = *(const struct CGroupInfo* const*) b; |
| |
| assert(x); |
| assert(y); |
| |
| return strcmp(x->cgroup_path, y->cgroup_path); |
| } |
| |
| static int dump_processes( |
| Hashmap *cgroups, |
| const char *cgroup_path, |
| const char *prefix, |
| unsigned n_columns, |
| OutputFlags flags) { |
| |
| struct CGroupInfo *cg; |
| int r; |
| |
| assert(prefix); |
| |
| if (IS_ROOT(cgroup_path)) |
| cgroup_path = "/"; |
| |
| cg = hashmap_get(cgroups, cgroup_path); |
| if (!cg) |
| return 0; |
| |
| if (!hashmap_isempty(cg->pids)) { |
| const char *name; |
| size_t n = 0, i; |
| pid_t *pids; |
| void *pidp; |
| Iterator j; |
| int width; |
| |
| /* Order processes by their PID */ |
| pids = newa(pid_t, hashmap_size(cg->pids)); |
| |
| HASHMAP_FOREACH_KEY(name, pidp, cg->pids, j) |
| pids[n++] = PTR_TO_PID(pidp); |
| |
| assert(n == hashmap_size(cg->pids)); |
| qsort_safe(pids, n, sizeof(pid_t), pid_compare_func); |
| |
| width = DECIMAL_STR_WIDTH(pids[n-1]); |
| |
| for (i = 0; i < n; i++) { |
| _cleanup_free_ char *e = NULL; |
| const char *special; |
| bool more; |
| |
| name = hashmap_get(cg->pids, PID_TO_PTR(pids[i])); |
| assert(name); |
| |
| if (n_columns != 0) { |
| unsigned k; |
| |
| k = MAX(LESS_BY(n_columns, 2U + width + 1U), 20U); |
| |
| e = ellipsize(name, k, 100); |
| if (e) |
| name = e; |
| } |
| |
| more = i+1 < n || cg->children; |
| special = special_glyph(more ? TREE_BRANCH : TREE_RIGHT); |
| |
| fprintf(stdout, "%s%s%*"PID_PRI" %s\n", |
| prefix, |
| special, |
| width, pids[i], |
| name); |
| } |
| } |
| |
| if (cg->children) { |
| struct CGroupInfo **children, *child; |
| size_t n = 0, i; |
| |
| /* Order subcgroups by their name */ |
| children = newa(struct CGroupInfo*, cg->n_children); |
| LIST_FOREACH(siblings, child, cg->children) |
| children[n++] = child; |
| assert(n == cg->n_children); |
| qsort_safe(children, n, sizeof(struct CGroupInfo*), cgroup_info_compare_func); |
| |
| if (n_columns != 0) |
| n_columns = MAX(LESS_BY(n_columns, 2U), 20U); |
| |
| for (i = 0; i < n; i++) { |
| _cleanup_free_ char *pp = NULL; |
| const char *name, *special; |
| bool more; |
| |
| child = children[i]; |
| |
| name = strrchr(child->cgroup_path, '/'); |
| if (!name) |
| return -EINVAL; |
| name++; |
| |
| more = i+1 < n; |
| special = special_glyph(more ? TREE_BRANCH : TREE_RIGHT); |
| |
| fputs(prefix, stdout); |
| fputs(special, stdout); |
| fputs(name, stdout); |
| fputc('\n', stdout); |
| |
| special = special_glyph(more ? TREE_VERTICAL : TREE_SPACE); |
| |
| pp = strappend(prefix, special); |
| if (!pp) |
| return -ENOMEM; |
| |
| r = dump_processes(cgroups, child->cgroup_path, pp, n_columns, flags); |
| if (r < 0) |
| return r; |
| } |
| } |
| |
| cg->done = true; |
| return 0; |
| } |
| |
| static int dump_extra_processes( |
| Hashmap *cgroups, |
| const char *prefix, |
| unsigned n_columns, |
| OutputFlags flags) { |
| |
| _cleanup_free_ pid_t *pids = NULL; |
| _cleanup_hashmap_free_ Hashmap *names = NULL; |
| struct CGroupInfo *cg; |
| size_t n_allocated = 0, n = 0, k; |
| Iterator i; |
| int width, r; |
| |
| /* Prints the extra processes, i.e. those that are in cgroups we haven't displayed yet. We show them as |
| * combined, sorted, linear list. */ |
| |
| HASHMAP_FOREACH(cg, cgroups, i) { |
| const char *name; |
| void *pidp; |
| Iterator j; |
| |
| if (cg->done) |
| continue; |
| |
| if (hashmap_isempty(cg->pids)) |
| continue; |
| |
| r = hashmap_ensure_allocated(&names, &trivial_hash_ops); |
| if (r < 0) |
| return r; |
| |
| if (!GREEDY_REALLOC(pids, n_allocated, n + hashmap_size(cg->pids))) |
| return -ENOMEM; |
| |
| HASHMAP_FOREACH_KEY(name, pidp, cg->pids, j) { |
| pids[n++] = PTR_TO_PID(pidp); |
| |
| r = hashmap_put(names, pidp, (void*) name); |
| if (r < 0) |
| return r; |
| } |
| } |
| |
| if (n == 0) |
| return 0; |
| |
| qsort_safe(pids, n, sizeof(pid_t), pid_compare_func); |
| width = DECIMAL_STR_WIDTH(pids[n-1]); |
| |
| for (k = 0; k < n; k++) { |
| _cleanup_free_ char *e = NULL; |
| const char *name; |
| |
| name = hashmap_get(names, PID_TO_PTR(pids[k])); |
| assert(name); |
| |
| if (n_columns != 0) { |
| unsigned z; |
| |
| z = MAX(LESS_BY(n_columns, 2U + width + 1U), 20U); |
| |
| e = ellipsize(name, z, 100); |
| if (e) |
| name = e; |
| } |
| |
| fprintf(stdout, "%s%s %*" PID_PRI " %s\n", |
| prefix, |
| special_glyph(TRIANGULAR_BULLET), |
| width, pids[k], |
| name); |
| } |
| |
| return 0; |
| } |
| |
| int unit_show_processes( |
| sd_bus *bus, |
| const char *unit, |
| const char *cgroup_path, |
| const char *prefix, |
| unsigned n_columns, |
| OutputFlags flags, |
| sd_bus_error *error) { |
| |
| _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
| Hashmap *cgroups = NULL; |
| struct CGroupInfo *cg; |
| int r; |
| |
| assert(bus); |
| assert(unit); |
| |
| if (flags & OUTPUT_FULL_WIDTH) |
| n_columns = 0; |
| else if (n_columns <= 0) |
| n_columns = columns(); |
| |
| prefix = strempty(prefix); |
| |
| r = sd_bus_call_method( |
| bus, |
| "org.freedesktop.systemd1", |
| "/org/freedesktop/systemd1", |
| "org.freedesktop.systemd1.Manager", |
| "GetUnitProcesses", |
| error, |
| &reply, |
| "s", |
| unit); |
| if (r < 0) |
| return r; |
| |
| cgroups = hashmap_new(&string_hash_ops); |
| if (!cgroups) |
| return -ENOMEM; |
| |
| r = sd_bus_message_enter_container(reply, 'a', "(sus)"); |
| if (r < 0) |
| goto finish; |
| |
| for (;;) { |
| const char *path = NULL, *name = NULL; |
| uint32_t pid; |
| |
| r = sd_bus_message_read(reply, "(sus)", &path, &pid, &name); |
| if (r < 0) |
| goto finish; |
| if (r == 0) |
| break; |
| |
| r = add_process(cgroups, path, pid, name); |
| if (r < 0) |
| goto finish; |
| } |
| |
| r = sd_bus_message_exit_container(reply); |
| if (r < 0) |
| goto finish; |
| |
| r = dump_processes(cgroups, cgroup_path, prefix, n_columns, flags); |
| if (r < 0) |
| goto finish; |
| |
| r = dump_extra_processes(cgroups, prefix, n_columns, flags); |
| |
| finish: |
| while ((cg = hashmap_first(cgroups))) |
| remove_cgroup(cgroups, cg); |
| |
| hashmap_free(cgroups); |
| |
| return r; |
| } |