/* SPDX-License-Identifier: LGPL-2.1+ */ #include "alloc-util.h" #include "bus-internal.h" #include "bus-unit-util.h" #include "bus-util.h" #include "cap-list.h" #include "cgroup-util.h" #include "condition.h" #include "cpu-set-util.h" #include "env-util.h" #include "errno-list.h" #include "escape.h" #include "hashmap.h" #include "hexdecoct.h" #include "hostname-util.h" #include "in-addr-util.h" #include "ip-protocol-list.h" #include "list.h" #include "locale-util.h" #include "missing_fs.h" #include "mountpoint-util.h" #include "nsflags.h" #include "parse-util.h" #include "path-util.h" #include "process-util.h" #include "rlimit-util.h" #include "securebits-util.h" #include "signal-util.h" #include "string-util.h" #include "syslog-util.h" #include "terminal-util.h" #include "unit-def.h" #include "user-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); } #define DEFINE_BUS_APPEND_PARSE_PTR(bus_type, cast_type, type, parse_func) \ static int bus_append_##parse_func( \ sd_bus_message *m, \ const char *field, \ const char *eq) { \ type val; \ int r; \ \ r = parse_func(eq, &val); \ if (r < 0) \ return log_error_errno(r, "Failed to parse %s=%s: %m", field, eq); \ \ r = sd_bus_message_append(m, "(sv)", field, \ bus_type, (cast_type) val); \ if (r < 0) \ return bus_log_create_error(r); \ \ return 1; \ } #define DEFINE_BUS_APPEND_PARSE(bus_type, parse_func) \ static int bus_append_##parse_func( \ sd_bus_message *m, \ const char *field, \ const char *eq) { \ int r; \ \ r = parse_func(eq); \ if (r < 0) \ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Failed to parse %s: %s", field, eq); \ \ r = sd_bus_message_append(m, "(sv)", field, \ bus_type, (int32_t) r); \ if (r < 0) \ return bus_log_create_error(r); \ \ return 1; \ } DEFINE_BUS_APPEND_PARSE("b", parse_boolean); DEFINE_BUS_APPEND_PARSE("i", ioprio_class_from_string); DEFINE_BUS_APPEND_PARSE("i", ip_tos_from_string); DEFINE_BUS_APPEND_PARSE("i", log_facility_unshifted_from_string); DEFINE_BUS_APPEND_PARSE("i", log_level_from_string); DEFINE_BUS_APPEND_PARSE("i", parse_errno); DEFINE_BUS_APPEND_PARSE("i", sched_policy_from_string); DEFINE_BUS_APPEND_PARSE("i", secure_bits_from_string); DEFINE_BUS_APPEND_PARSE("i", signal_from_string); DEFINE_BUS_APPEND_PARSE("i", parse_ip_protocol); DEFINE_BUS_APPEND_PARSE_PTR("i", int32_t, int, ioprio_parse_priority); DEFINE_BUS_APPEND_PARSE_PTR("i", int32_t, int, parse_nice); DEFINE_BUS_APPEND_PARSE_PTR("i", int32_t, int, safe_atoi); DEFINE_BUS_APPEND_PARSE_PTR("t", uint64_t, nsec_t, parse_nsec); DEFINE_BUS_APPEND_PARSE_PTR("t", uint64_t, uint64_t, cg_blkio_weight_parse); DEFINE_BUS_APPEND_PARSE_PTR("t", uint64_t, uint64_t, cg_cpu_shares_parse); DEFINE_BUS_APPEND_PARSE_PTR("t", uint64_t, uint64_t, cg_weight_parse); DEFINE_BUS_APPEND_PARSE_PTR("t", uint64_t, unsigned long, mount_propagation_flags_from_string); DEFINE_BUS_APPEND_PARSE_PTR("t", uint64_t, uint64_t, safe_atou64); DEFINE_BUS_APPEND_PARSE_PTR("u", uint32_t, mode_t, parse_mode); DEFINE_BUS_APPEND_PARSE_PTR("u", uint32_t, unsigned, safe_atou); DEFINE_BUS_APPEND_PARSE_PTR("x", int64_t, int64_t, safe_atoi64); static int bus_append_string(sd_bus_message *m, const char *field, const char *eq) { int r; r = sd_bus_message_append(m, "(sv)", field, "s", eq); if (r < 0) return bus_log_create_error(r); return 1; } static int bus_append_strv(sd_bus_message *m, const char *field, const char *eq, ExtractFlags flags) { const char *p; int r; r = sd_bus_message_open_container(m, 'r', "sv"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_basic(m, 's', field); if (r < 0) return bus_log_create_error(r); 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); for (p = eq;;) { _cleanup_free_ char *word = NULL; r = extract_first_word(&p, &word, NULL, flags); if (r == 0) break; if (r == -ENOMEM) return log_oom(); if (r < 0) return log_error_errno(r, "Invalid syntax: %s", eq); 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); 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 1; } static int bus_append_byte_array(sd_bus_message *m, const char *field, const void *buf, size_t n) { int r; r = sd_bus_message_open_container(m, SD_BUS_TYPE_STRUCT, "sv"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_basic(m, SD_BUS_TYPE_STRING, field); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_open_container(m, 'v', "ay"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_array(m, 'y', buf, n); 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); if (r < 0) return bus_log_create_error(r); return 1; } static int bus_append_parse_sec_rename(sd_bus_message *m, const char *field, const char *eq) { char *n; usec_t t; size_t l; int r; r = parse_sec(eq, &t); if (r < 0) return log_error_errno(r, "Failed to parse %s=%s: %m", field, eq); l = strlen(field); n = newa(char, l + 2); /* Change suffix Sec → USec */ strcpy(mempcpy(n, field, l - 3), "USec"); r = sd_bus_message_append(m, "(sv)", n, "t", t); if (r < 0) return bus_log_create_error(r); return 1; } static int bus_append_parse_size(sd_bus_message *m, const char *field, const char *eq, uint64_t base) { uint64_t v; int r; r = parse_size(eq, base, &v); if (r < 0) return log_error_errno(r, "Failed to parse %s=%s: %m", field, eq); r = sd_bus_message_append(m, "(sv)", field, "t", v); if (r < 0) return bus_log_create_error(r); return 1; } static int bus_append_exec_command(sd_bus_message *m, const char *field, const char *eq) { bool ignore_failure = false, explicit_path = false, done = false; _cleanup_strv_free_ char **l = NULL; _cleanup_free_ char *path = NULL; int r; do { switch (*eq) { case '-': if (ignore_failure) done = true; else { ignore_failure = true; eq++; } break; case '@': if (explicit_path) done = true; else { explicit_path = true; eq++; } break; case '+': case '!': /* The bus API doesn't support +, ! and !! currently, unfortunately. :-( */ return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP), "Sorry, but +, ! and !! are currently not supported for transient services."); default: done = true; break; } } while (!done); if (explicit_path) { r = extract_first_word(&eq, &path, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE); if (r < 0) return log_error_errno(r, "Failed to parse path: %m"); } r = strv_split_extract(&l, eq, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE); if (r < 0) return log_error_errno(r, "Failed to parse command line: %m"); r = sd_bus_message_open_container(m, SD_BUS_TYPE_STRUCT, "sv"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_basic(m, SD_BUS_TYPE_STRING, field); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_open_container(m, 'v', "a(sasb)"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_open_container(m, 'a', "(sasb)"); if (r < 0) return bus_log_create_error(r); if (!strv_isempty(l)) { r = sd_bus_message_open_container(m, 'r', "sasb"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append(m, "s", path ?: l[0]); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_strv(m, l); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append(m, "b", ignore_failure); 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); 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); if (r < 0) return bus_log_create_error(r); return 1; } static int bus_append_ip_address_access(sd_bus_message *m, int family, const union in_addr_union *prefix, unsigned char prefixlen) { int r; assert(m); assert(prefix); r = sd_bus_message_open_container(m, 'r', "iayu"); if (r < 0) return r; r = sd_bus_message_append(m, "i", family); if (r < 0) return r; r = sd_bus_message_append_array(m, 'y', prefix, FAMILY_ADDRESS_SIZE(family)); if (r < 0) return r; r = sd_bus_message_append(m, "u", prefixlen); if (r < 0) return r; return sd_bus_message_close_container(m); } static int bus_append_cgroup_property(sd_bus_message *m, const char *field, const char *eq) { int r; if (STR_IN_SET(field, "DevicePolicy", "Slice")) return bus_append_string(m, field, eq); if (STR_IN_SET(field, "CPUAccounting", "MemoryAccounting", "IOAccounting", "BlockIOAccounting", "TasksAccounting", "IPAccounting")) return bus_append_parse_boolean(m, field, eq); if (STR_IN_SET(field, "CPUWeight", "StartupCPUWeight", "IOWeight", "StartupIOWeight")) return bus_append_cg_weight_parse(m, field, eq); if (STR_IN_SET(field, "CPUShares", "StartupCPUShares")) return bus_append_cg_cpu_shares_parse(m, field, eq); if (STR_IN_SET(field, "BlockIOWeight", "StartupBlockIOWeight")) return bus_append_cg_blkio_weight_parse(m, field, eq); if (streq(field, "Delegate")) { r = parse_boolean(eq); if (r < 0) return bus_append_strv(m, "DelegateControllers", eq, EXTRACT_QUOTES); r = sd_bus_message_append(m, "(sv)", "Delegate", "b", r); if (r < 0) return bus_log_create_error(r); return 1; } if (STR_IN_SET(field, "MemoryMin", "MemoryLow", "MemoryHigh", "MemoryMax", "MemorySwapMax", "MemoryLimit", "TasksMax")) { if (isempty(eq) || streq(eq, "infinity")) { r = sd_bus_message_append(m, "(sv)", field, "t", CGROUP_LIMIT_MAX); if (r < 0) return bus_log_create_error(r); return 1; } r = parse_permille(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) r * UINT32_MAX) / 1000U)); if (r < 0) return bus_log_create_error(r); return 1; } if (streq(field, "TasksMax")) return bus_append_safe_atou64(m, field, eq); return bus_append_parse_size(m, field, eq, 1024); } if (streq(field, "CPUQuota")) { if (isempty(eq)) r = sd_bus_message_append(m, "(sv)", "CPUQuotaPerSecUSec", "t", USEC_INFINITY); else { r = parse_permille_unbounded(eq); if (r == 0) return log_error_errno(SYNTHETIC_ERRNO(ERANGE), "CPU quota too small."); if (r < 0) return log_error_errno(r, "CPU quota '%s' invalid.", eq); r = sd_bus_message_append(m, "(sv)", "CPUQuotaPerSecUSec", "t", (((uint64_t) r * USEC_PER_SEC) / 1000U)); } if (r < 0) return bus_log_create_error(r); return 1; } if (streq(field, "DeviceAllow")) { if (isempty(eq)) r = sd_bus_message_append(m, "(sv)", field, "a(ss)", 0); else { const char *path = eq, *rwm = NULL, *e; e = strchr(eq, ' '); if (e) { path = strndupa(eq, e - eq); rwm = e+1; } r = sd_bus_message_append(m, "(sv)", field, "a(ss)", 1, path, strempty(rwm)); } if (r < 0) return bus_log_create_error(r); return 1; } if (cgroup_io_limit_type_from_string(field) >= 0 || STR_IN_SET(field, "BlockIOReadBandwidth", "BlockIOWriteBandwidth")) { if (isempty(eq)) r = sd_bus_message_append(m, "(sv)", field, "a(st)", 0); else { const char *path, *bandwidth, *e; uint64_t bytes; e = strchr(eq, ' '); if (!e) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Failed to parse %s value %s.", field, eq); path = strndupa(eq, e - eq); bandwidth = e+1; if (streq(bandwidth, "infinity")) bytes = CGROUP_LIMIT_MAX; else { r = parse_size(bandwidth, 1000, &bytes); if (r < 0) return log_error_errno(r, "Failed to parse byte value %s: %m", bandwidth); } r = sd_bus_message_append(m, "(sv)", field, "a(st)", 1, path, bytes); } if (r < 0) return bus_log_create_error(r); return 1; } if (STR_IN_SET(field, "IODeviceWeight", "BlockIODeviceWeight")) { if (isempty(eq)) r = sd_bus_message_append(m, "(sv)", field, "a(st)", 0); else { const char *path, *weight, *e; uint64_t u; e = strchr(eq, ' '); if (!e) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Failed to parse %s value %s.", field, eq); path = strndupa(eq, e - eq); weight = e+1; r = safe_atou64(weight, &u); if (r < 0) return log_error_errno(r, "Failed to parse %s value %s: %m", field, weight); r = sd_bus_message_append(m, "(sv)", field, "a(st)", 1, path, u); } if (r < 0) return bus_log_create_error(r); return 1; } if (streq(field, "IODeviceLatencyTargetSec")) { const char *field_usec = "IODeviceLatencyTargetUSec"; if (isempty(eq)) r = sd_bus_message_append(m, "(sv)", field_usec, "a(st)", USEC_INFINITY); else { const char *path, *target, *e; usec_t usec; e = strchr(eq, ' '); if (!e) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Failed to parse %s value %s.", field, eq); path = strndupa(eq, e - eq); target = e+1; r = parse_sec(target, &usec); if (r < 0) return log_error_errno(r, "Failed to parse %s value %s: %m", field, target); r = sd_bus_message_append(m, "(sv)", field_usec, "a(st)", 1, path, usec); } if (r < 0) return bus_log_create_error(r); return 1; } if (STR_IN_SET(field, "IPAddressAllow", "IPAddressDeny")) { unsigned char prefixlen; union in_addr_union prefix = {}; int family; if (isempty(eq)) { r = sd_bus_message_append(m, "(sv)", field, "a(iayu)", 0); if (r < 0) return bus_log_create_error(r); return 1; } r = sd_bus_message_open_container(m, SD_BUS_TYPE_STRUCT, "sv"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_basic(m, SD_BUS_TYPE_STRING, field); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_open_container(m, 'v', "a(iayu)"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_open_container(m, 'a', "(iayu)"); if (r < 0) return bus_log_create_error(r); if (streq(eq, "any")) { /* "any" is a shortcut for 0.0.0.0/0 and ::/0 */ r = bus_append_ip_address_access(m, AF_INET, &prefix, 0); if (r < 0) return bus_log_create_error(r); r = bus_append_ip_address_access(m, AF_INET6, &prefix, 0); if (r < 0) return bus_log_create_error(r); } else if (is_localhost(eq)) { /* "localhost" is a shortcut for 127.0.0.0/8 and ::1/128 */ prefix.in.s_addr = htobe32(0x7f000000); r = bus_append_ip_address_access(m, AF_INET, &prefix, 8); if (r < 0) return bus_log_create_error(r); prefix.in6 = (struct in6_addr) IN6ADDR_LOOPBACK_INIT; r = bus_append_ip_address_access(m, AF_INET6, &prefix, 128); if (r < 0) return r; } else if (streq(eq, "link-local")) { /* "link-local" is a shortcut for 169.254.0.0/16 and fe80::/64 */ prefix.in.s_addr = htobe32((UINT32_C(169) << 24 | UINT32_C(254) << 16)); r = bus_append_ip_address_access(m, AF_INET, &prefix, 16); if (r < 0) return bus_log_create_error(r); prefix.in6 = (struct in6_addr) { .s6_addr32[0] = htobe32(0xfe800000) }; r = bus_append_ip_address_access(m, AF_INET6, &prefix, 64); if (r < 0) return bus_log_create_error(r); } else if (streq(eq, "multicast")) { /* "multicast" is a shortcut for 224.0.0.0/4 and ff00::/8 */ prefix.in.s_addr = htobe32((UINT32_C(224) << 24)); r = bus_append_ip_address_access(m, AF_INET, &prefix, 4); if (r < 0) return bus_log_create_error(r); prefix.in6 = (struct in6_addr) { .s6_addr32[0] = htobe32(0xff000000) }; r = bus_append_ip_address_access(m, AF_INET6, &prefix, 8); if (r < 0) return bus_log_create_error(r); } else { for (;;) { _cleanup_free_ char *word = NULL; r = extract_first_word(&eq, &word, NULL, 0); if (r == 0) break; if (r == -ENOMEM) return log_oom(); if (r < 0) return log_error_errno(r, "Failed to parse %s: %s", field, eq); r = in_addr_prefix_from_string_auto(word, &family, &prefix, &prefixlen); if (r < 0) return log_error_errno(r, "Failed to parse IP address prefix: %s", word); r = bus_append_ip_address_access(m, family, &prefix, prefixlen); 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); 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 1; } return 0; } static int bus_append_automount_property(sd_bus_message *m, const char *field, const char *eq) { if (streq(field, "Where")) return bus_append_string(m, field, eq); if (streq(field, "DirectoryMode")) return bus_append_parse_mode(m, field, eq); if (streq(field, "TimeoutIdleSec")) return bus_append_parse_sec_rename(m, field, eq); return 0; } static int bus_append_execute_property(sd_bus_message *m, const char *field, const char *eq) { const char *suffix; int r; if (STR_IN_SET(field, "User", "Group", "UtmpIdentifier", "UtmpMode", "PAMName", "TTYPath", "WorkingDirectory", "RootDirectory", "SyslogIdentifier", "ProtectSystem", "ProtectHome", "SELinuxContext", "RootImage", "RuntimeDirectoryPreserve", "Personality", "KeyringMode")) return bus_append_string(m, field, eq); if (STR_IN_SET(field, "IgnoreSIGPIPE", "TTYVHangup", "TTYReset", "TTYVTDisallocate", "PrivateTmp", "PrivateDevices", "PrivateNetwork", "PrivateUsers", "PrivateMounts", "NoNewPrivileges", "SyslogLevelPrefix", "MemoryDenyWriteExecute", "RestrictRealtime", "DynamicUser", "RemoveIPC", "ProtectKernelTunables", "ProtectKernelModules", "ProtectControlGroups", "MountAPIVFS", "CPUSchedulingResetOnFork", "LockPersonality")) return bus_append_parse_boolean(m, field, eq); if (STR_IN_SET(field, "ReadWriteDirectories", "ReadOnlyDirectories", "InaccessibleDirectories", "ReadWritePaths", "ReadOnlyPaths", "InaccessiblePaths", "RuntimeDirectory", "StateDirectory", "CacheDirectory", "LogsDirectory", "ConfigurationDirectory", "SupplementaryGroups", "SystemCallArchitectures")) return bus_append_strv(m, field, eq, EXTRACT_QUOTES); if (STR_IN_SET(field, "SyslogLevel", "LogLevelMax")) return bus_append_log_level_from_string(m, field, eq); if (streq(field, "SyslogFacility")) return bus_append_log_facility_unshifted_from_string(m, field, eq); if (streq(field, "SecureBits")) return bus_append_secure_bits_from_string(m, field, eq); if (streq(field, "CPUSchedulingPolicy")) return bus_append_sched_policy_from_string(m, field, eq); if (STR_IN_SET(field, "CPUSchedulingPriority", "OOMScoreAdjust")) return bus_append_safe_atoi(m, field, eq); if (streq(field, "Nice")) return bus_append_parse_nice(m, field, eq); if (streq(field, "SystemCallErrorNumber")) return bus_append_parse_errno(m, field, eq); if (streq(field, "IOSchedulingClass")) return bus_append_ioprio_class_from_string(m, field, eq); if (streq(field, "IOSchedulingPriority")) return bus_append_ioprio_parse_priority(m, field, eq); if (STR_IN_SET(field, "RuntimeDirectoryMode", "StateDirectoryMode", "CacheDirectoryMode", "LogsDirectoryMode", "ConfigurationDirectoryMode", "UMask")) return bus_append_parse_mode(m, field, eq); if (streq(field, "TimerSlackNSec")) return bus_append_parse_nsec(m, field, eq); if (streq(field, "LogRateLimitIntervalSec")) return bus_append_parse_sec_rename(m, field, eq); if (streq(field, "LogRateLimitBurst")) return bus_append_safe_atou(m, field, eq); if (streq(field, "MountFlags")) return bus_append_mount_propagation_flags_from_string(m, field, eq); if (STR_IN_SET(field, "Environment", "UnsetEnvironment", "PassEnvironment")) return bus_append_strv(m, field, eq, EXTRACT_QUOTES|EXTRACT_CUNESCAPE); if (streq(field, "EnvironmentFile")) { if (isempty(eq)) r = sd_bus_message_append(m, "(sv)", "EnvironmentFiles", "a(sb)", 0); else r = sd_bus_message_append(m, "(sv)", "EnvironmentFiles", "a(sb)", 1, eq[0] == '-' ? eq + 1 : eq, eq[0] == '-'); if (r < 0) return bus_log_create_error(r); return 1; } if (streq(field, "LogExtraFields")) { r = sd_bus_message_open_container(m, 'r', "sv"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_basic(m, 's', "LogExtraFields"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_open_container(m, 'v', "aay"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_open_container(m, 'a', "ay"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_array(m, 'y', eq, strlen(eq)); 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); 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 1; } if (STR_IN_SET(field, "StandardInput", "StandardOutput", "StandardError")) { const char *n, *appended; if ((n = startswith(eq, "fd:"))) { appended = strjoina(field, "FileDescriptorName"); r = sd_bus_message_append(m, "(sv)", appended, "s", n); } else if ((n = startswith(eq, "file:"))) { appended = strjoina(field, "File"); r = sd_bus_message_append(m, "(sv)", appended, "s", n); } else if ((n = startswith(eq, "append:"))) { appended = strjoina(field, "FileToAppend"); r = sd_bus_message_append(m, "(sv)", appended, "s", n); } else r = sd_bus_message_append(m, "(sv)", field, "s", eq); if (r < 0) return bus_log_create_error(r); return 1; } if (streq(field, "StandardInputText")) { _cleanup_free_ char *unescaped = NULL; r = cunescape(eq, 0, &unescaped); if (r < 0) return log_error_errno(r, "Failed to unescape text '%s': %m", eq); if (!strextend(&unescaped, "\n", NULL)) return log_oom(); /* Note that we don't expand specifiers here, but that should be OK, as this is a programmatic * interface anyway */ return bus_append_byte_array(m, field, unescaped, strlen(unescaped)); } if (streq(field, "StandardInputData")) { _cleanup_free_ void *decoded = NULL; size_t sz; r = unbase64mem(eq, (size_t) -1, &decoded, &sz); if (r < 0) return log_error_errno(r, "Failed to decode base64 data '%s': %m", eq); return bus_append_byte_array(m, field, decoded, sz); } if ((suffix = startswith(field, "Limit"))) { int rl; rl = rlimit_from_string(suffix); 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, "(sv)", field, "t", l.rlim_max); 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); if (r < 0) return bus_log_create_error(r); return 1; } } if (STR_IN_SET(field, "AppArmorProfile", "SmackProcessLabel")) { int ignore = 0; const char *s = eq; if (eq[0] == '-') { ignore = 1; s = eq + 1; } r = sd_bus_message_append(m, "(sv)", field, "(bs)", ignore, s); if (r < 0) return bus_log_create_error(r); return 1; } if (STR_IN_SET(field, "CapabilityBoundingSet", "AmbientCapabilities")) { uint64_t sum = 0; bool invert = false; const char *p = eq; if (*p == '~') { invert = true; p++; } r = capability_set_from_string(p, &sum); if (r < 0) return log_error_errno(r, "Failed to parse %s value %s: %m", field, eq); sum = invert ? ~sum : sum; r = sd_bus_message_append(m, "(sv)", field, "t", sum); if (r < 0) return bus_log_create_error(r); return 1; } if (streq(field, "CPUAffinity")) { _cleanup_cpu_free_ cpu_set_t *cpuset = NULL; r = parse_cpu_set(eq, &cpuset); if (r < 0) return log_error_errno(r, "Failed to parse %s value: %s", field, eq); return bus_append_byte_array(m, field, cpuset, CPU_ALLOC_SIZE(r)); } if (STR_IN_SET(field, "RestrictAddressFamilies", "SystemCallFilter")) { int whitelist = 1; const char *p = eq; if (*p == '~') { whitelist = 0; p++; } r = sd_bus_message_open_container(m, SD_BUS_TYPE_STRUCT, "sv"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_basic(m, SD_BUS_TYPE_STRING, field); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_open_container(m, 'v', "(bas)"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_open_container(m, 'r', "bas"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_basic(m, 'b', &whitelist); 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); for (;;) { _cleanup_free_ char *word = NULL; r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES); if (r == 0) break; if (r == -ENOMEM) return log_oom(); if (r < 0) return log_error_errno(r, "Invalid syntax: %s", eq); 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); 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); if (r < 0) return bus_log_create_error(r); return 1; } if (streq(field, "RestrictNamespaces")) { bool invert = false; unsigned long flags; r = parse_boolean(eq); if (r > 0) flags = 0; else if (r == 0) flags = NAMESPACE_FLAGS_ALL; else { if (eq[0] == '~') { invert = true; eq++; } r = namespace_flags_from_string(eq, &flags); if (r < 0) return log_error_errno(r, "Failed to parse %s value %s.", field, eq); } if (invert) flags = (~flags) & NAMESPACE_FLAGS_ALL; r = sd_bus_message_append(m, "(sv)", field, "t", (uint64_t) flags); if (r < 0) return bus_log_create_error(r); return 1; } if (STR_IN_SET(field, "BindPaths", "BindReadOnlyPaths")) { const char *p = eq; r = sd_bus_message_open_container(m, SD_BUS_TYPE_STRUCT, "sv"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_basic(m, SD_BUS_TYPE_STRING, field); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_open_container(m, 'v', "a(ssbt)"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_open_container(m, 'a', "(ssbt)"); if (r < 0) return bus_log_create_error(r); for (;;) { _cleanup_free_ char *source = NULL, *destination = NULL; char *s = NULL, *d = NULL; bool ignore_enoent = false; uint64_t flags = MS_REC; r = extract_first_word(&p, &source, ":" WHITESPACE, EXTRACT_QUOTES|EXTRACT_DONT_COALESCE_SEPARATORS); if (r < 0) return log_error_errno(r, "Failed to parse argument: %m"); if (r == 0) break; s = source; if (s[0] == '-') { ignore_enoent = true; s++; } if (p && p[-1] == ':') { r = extract_first_word(&p, &destination, ":" WHITESPACE, EXTRACT_QUOTES|EXTRACT_DONT_COALESCE_SEPARATORS); if (r < 0) return log_error_errno(r, "Failed to parse argument: %m"); if (r == 0) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Missing argument after ':': %s", eq); d = destination; if (p && p[-1] == ':') { _cleanup_free_ char *options = NULL; r = extract_first_word(&p, &options, NULL, EXTRACT_QUOTES); if (r < 0) return log_error_errno(r, "Failed to parse argument: %m"); if (isempty(options) || streq(options, "rbind")) flags = MS_REC; else if (streq(options, "norbind")) flags = 0; else return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unknown options: %s", eq); } } else d = s; r = sd_bus_message_append(m, "(ssbt)", s, d, ignore_enoent, flags); 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); 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 1; } if (streq(field, "TemporaryFileSystem")) { const char *p = eq; r = sd_bus_message_open_container(m, SD_BUS_TYPE_STRUCT, "sv"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_basic(m, SD_BUS_TYPE_STRING, field); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_open_container(m, 'v', "a(ss)"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_open_container(m, 'a', "(ss)"); if (r < 0) return bus_log_create_error(r); for (;;) { _cleanup_free_ char *word = NULL, *path = NULL; const char *w; r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES); if (r < 0) return log_error_errno(r, "Failed to parse argument: %m"); if (r == 0) break; w = word; r = extract_first_word(&w, &path, ":", EXTRACT_DONT_COALESCE_SEPARATORS); if (r < 0) return log_error_errno(r, "Failed to parse argument: %m"); if (r == 0) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Failed to parse argument: %s", p); r = sd_bus_message_append(m, "(ss)", path, w); 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); 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 1; } return 0; } static int bus_append_kill_property(sd_bus_message *m, const char *field, const char *eq) { if (streq(field, "KillMode")) return bus_append_string(m, field, eq); if (STR_IN_SET(field, "SendSIGHUP", "SendSIGKILL")) return bus_append_parse_boolean(m, field, eq); if (STR_IN_SET(field, "KillSignal", "FinalKillSignal", "WatchdogSignal")) return bus_append_signal_from_string(m, field, eq); return 0; } static int bus_append_mount_property(sd_bus_message *m, const char *field, const char *eq) { if (STR_IN_SET(field, "What", "Where", "Options", "Type")) return bus_append_string(m, field, eq); if (streq(field, "TimeoutSec")) return bus_append_parse_sec_rename(m, field, eq); if (streq(field, "DirectoryMode")) return bus_append_parse_mode(m, field, eq); if (STR_IN_SET(field, "SloppyOptions", "LazyUnmount", "ForceUnmount")) return bus_append_parse_boolean(m, field, eq); return 0; } static int bus_append_path_property(sd_bus_message *m, const char *field, const char *eq) { int r; if (streq(field, "MakeDirectory")) return bus_append_parse_boolean(m, field, eq); if (streq(field, "DirectoryMode")) return bus_append_parse_mode(m, field, eq); if (STR_IN_SET(field, "PathExists", "PathExistsGlob", "PathChanged", "PathModified", "DirectoryNotEmpty")) { if (isempty(eq)) r = sd_bus_message_append(m, "(sv)", "Paths", "a(ss)", 0); else r = sd_bus_message_append(m, "(sv)", "Paths", "a(ss)", 1, field, eq); if (r < 0) return bus_log_create_error(r); return 1; } return 0; } static int bus_append_service_property(sd_bus_message *m, const char *field, const char *eq) { int r; if (STR_IN_SET(field, "PIDFile", "Type", "Restart", "BusName", "NotifyAccess", "USBFunctionDescriptors", "USBFunctionStrings")) return bus_append_string(m, field, eq); if (STR_IN_SET(field, "PermissionsStartOnly", "RootDirectoryStartOnly", "RemainAfterExit", "GuessMainPID")) return bus_append_parse_boolean(m, field, eq); if (STR_IN_SET(field, "RestartSec", "TimeoutStartSec", "TimeoutStopSec", "RuntimeMaxSec", "WatchdogSec")) return bus_append_parse_sec_rename(m, field, eq); if (streq(field, "TimeoutSec")) { r = bus_append_parse_sec_rename(m, "TimeoutStartSec", eq); if (r < 0) return r; return bus_append_parse_sec_rename(m, "TimeoutStopSec", eq); } if (streq(field, "FileDescriptorStoreMax")) return bus_append_safe_atou(m, field, eq); if (STR_IN_SET(field, "ExecStartPre", "ExecStart", "ExecStartPost", "ExecReload", "ExecStop", "ExecStopPost")) return bus_append_exec_command(m, field, eq); if (STR_IN_SET(field, "RestartPreventExitStatus", "RestartForceExitStatus", "SuccessExitStatus")) { _cleanup_free_ int *status = NULL, *signal = NULL; size_t sz_status = 0, sz_signal = 0; const char *p; for (p = eq;;) { _cleanup_free_ char *word = NULL; int val; r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES); if (r == 0) break; if (r == -ENOMEM) return log_oom(); if (r < 0) return log_error_errno(r, "Invalid syntax in %s: %s", field, eq); r = safe_atoi(word, &val); if (r < 0) { val = signal_from_string(word); if (val < 0) return log_error_errno(r, "Invalid status or signal %s in %s: %m", word, field); signal = reallocarray(signal, sz_signal + 1, sizeof(int)); if (!signal) return log_oom(); signal[sz_signal++] = val; } else { status = reallocarray(status, sz_status + 1, sizeof(int)); if (!status) return log_oom(); status[sz_status++] = val; } } r = sd_bus_message_open_container(m, SD_BUS_TYPE_STRUCT, "sv"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_basic(m, SD_BUS_TYPE_STRING, field); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_open_container(m, 'v', "(aiai)"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_open_container(m, 'r', "aiai"); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_array(m, 'i', status, sz_status); if (r < 0) return bus_log_create_error(r); r = sd_bus_message_append_array(m, 'i', signal, sz_signal); 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); 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 1; } return 0; } static int bus_append_socket_property(sd_bus_message *m, const char *field, const char *eq) { int r; if (STR_IN_SET(field, "Accept", "Writable", "KeepAlive", "NoDelay", "FreeBind", "Transparent", "Broadcast", "PassCredentials", "PassSecurity", "ReusePort", "RemoveOnStop", "SELinuxContextFromNet")) return bus_append_parse_boolean(m, field, eq); if (STR_IN_SET(field, "Priority", "IPTTL", "Mark")) return bus_append_safe_atoi(m, field, eq); if (streq(field, "IPTOS")) return bus_append_ip_tos_from_string(m, field, eq); if (STR_IN_SET(field, "Backlog", "MaxConnections", "MaxConnectionsPerSource", "KeepAliveProbes", "TriggerLimitBurst")) return bus_append_safe_atou(m, field, eq); if (STR_IN_SET(field, "SocketMode", "DirectoryMode")) return bus_append_parse_mode(m, field, eq); if (STR_IN_SET(field, "MessageQueueMaxMessages", "MessageQueueMessageSize")) return bus_append_safe_atoi64(m, field, eq); if (STR_IN_SET(field, "TimeoutSec", "KeepAliveTimeSec", "KeepAliveIntervalSec", "DeferAcceptSec", "TriggerLimitIntervalSec")) return bus_append_parse_sec_rename(m, field, eq); if (STR_IN_SET(field, "ReceiveBuffer", "SendBuffer", "PipeSize")) return bus_append_parse_size(m, field, eq, 1024); if (STR_IN_SET(field, "ExecStartPre", "ExecStartPost", "ExecReload", "ExecStopPost")) return bus_append_exec_command(m, field, eq); if (STR_IN_SET(field, "SmackLabel", "SmackLabelIPIn", "SmackLabelIPOut", "TCPCongestion", "BindToDevice", "BindIPv6Only", "FileDescriptorName", "SocketUser", "SocketGroup")) return bus_append_string(m, field, eq); if (streq(field, "Symlinks")) return bus_append_strv(m, field, eq, EXTRACT_QUOTES); if (streq(field, "SocketProtocol")) return bus_append_parse_ip_protocol(m, field, eq); if (STR_IN_SET(field, "ListenStream", "ListenDatagram", "ListenSequentialPacket", "ListenNetlink", "ListenSpecial", "ListenMessageQueue", "ListenFIFO", "ListenUSBFunction")) { if (isempty(eq)) r = sd_bus_message_append(m, "(sv)", "Listen", "a(ss)", 0); else r = sd_bus_message_append(m, "(sv)", "Listen", "a(ss)", 1, field + STRLEN("Listen"), eq); if (r < 0) return bus_log_create_error(r); return 1; } return 0; } static int bus_append_timer_property(sd_bus_message *m, const char *field, const char *eq) { int r; if (STR_IN_SET(field, "WakeSystem", "RemainAfterElapse", "Persistent")) return bus_append_parse_boolean(m, field, eq); if (STR_IN_SET(field, "AccuracySec", "RandomizedDelaySec")) return bus_append_parse_sec_rename(m, field, eq); if (STR_IN_SET(field, "OnActiveSec", "OnBootSec", "OnStartupSec", "OnUnitActiveSec","OnUnitInactiveSec")) { if (isempty(eq)) r = sd_bus_message_append(m, "(sv)", "TimersMonotonic", "a(st)", 0); else { usec_t t; r = parse_sec(eq, &t); if (r < 0) return log_error_errno(r, "Failed to parse %s=%s: %m", field, eq); r = sd_bus_message_append(m, "(sv)", "TimersMonotonic", "a(st)", 1, field, t); } if (r < 0) return bus_log_create_error(r); return 1; } if (streq(field, "OnCalendar")) { if (isempty(eq)) r = sd_bus_message_append(m, "(sv)", "TimersCalendar", "a(ss)", 0); else r = sd_bus_message_append(m, "(sv)", "TimersCalendar", "a(ss)", 1, field, eq); if (r < 0) return bus_log_create_error(r); return 1; } return 0; } static int bus_append_unit_property(sd_bus_message *m, const char *field, const char *eq) { ConditionType t = _CONDITION_TYPE_INVALID; bool is_condition = false; int r; if (STR_IN_SET(field, "Description", "SourcePath", "OnFailureJobMode", "JobTimeoutAction", "JobTimeoutRebootArgument", "StartLimitAction", "FailureAction", "SuccessAction", "RebootArgument", "CollectMode")) return bus_append_string(m, field, eq); if (STR_IN_SET(field, "StopWhenUnneeded", "RefuseManualStart", "RefuseManualStop", "AllowIsolate", "IgnoreOnIsolate", "DefaultDependencies")) return bus_append_parse_boolean(m, field, eq); if (STR_IN_SET(field, "JobTimeoutSec", "JobRunningTimeoutSec", "StartLimitIntervalSec")) return bus_append_parse_sec_rename(m, field, eq); if (streq(field, "StartLimitBurst")) return bus_append_safe_atou(m, field, eq); if (STR_IN_SET(field, "SuccessActionExitStatus", "FailureActionExitStatus")) { if (isempty(eq)) r = sd_bus_message_append(m, "(sv)", field, "i", -1); else { uint8_t u; r = safe_atou8(eq, &u); if (r < 0) return log_error_errno(r, "Failed to parse %s=%s", field, eq); r = sd_bus_message_append(m, "(sv)", field, "i", (int) u); } if (r < 0) return bus_log_create_error(r); return 1; } if (unit_dependency_from_string(field) >= 0 || STR_IN_SET(field, "Documentation", "RequiresMountsFor")) return bus_append_strv(m, field, eq, EXTRACT_QUOTES); t = condition_type_from_string(field); if (t >= 0) is_condition = true; else t = assert_type_from_string(field); if (t >= 0) { if (isempty(eq)) r = sd_bus_message_append(m, "(sv)", is_condition ? "Conditions" : "Asserts", "a(sbbs)", 0); else { const char *p = eq; int trigger, negate; trigger = *p == '|'; if (trigger) p++; negate = *p == '!'; if (negate) p++; r = sd_bus_message_append(m, "(sv)", is_condition ? "Conditions" : "Asserts", "a(sbbs)", 1, field, trigger, negate, p); } if (r < 0) return bus_log_create_error(r); return 1; } return 0; } int bus_append_unit_property_assignment(sd_bus_message *m, UnitType t, const char *assignment) { const char *eq, *field; int r; assert(m); assert(assignment); eq = strchr(assignment, '='); if (!eq) return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Not an assignment: %s", assignment); field = strndupa(assignment, eq - assignment); eq++; switch (t) { case UNIT_SERVICE: r = bus_append_cgroup_property(m, field, eq); if (r != 0) return r; r = bus_append_execute_property(m, field, eq); if (r != 0) return r; r = bus_append_kill_property(m, field, eq); if (r != 0) return r; r = bus_append_service_property(m, field, eq); if (r != 0) return r; break; case UNIT_SOCKET: r = bus_append_cgroup_property(m, field, eq); if (r != 0) return r; r = bus_append_execute_property(m, field, eq); if (r != 0) return r; r = bus_append_kill_property(m, field, eq); if (r != 0) return r; r = bus_append_socket_property(m, field, eq); if (r != 0) return r; break; case UNIT_TIMER: r = bus_append_timer_property(m, field, eq); if (r != 0) return r; break; case UNIT_PATH: r = bus_append_path_property(m, field, eq); if (r != 0) return r; break; case UNIT_SLICE: r = bus_append_cgroup_property(m, field, eq); if (r != 0) return r; break; case UNIT_SCOPE: if (streq(field, "TimeoutStopSec")) return bus_append_parse_sec_rename(m, field, eq); r = bus_append_cgroup_property(m, field, eq); if (r != 0) return r; r = bus_append_kill_property(m, field, eq); if (r != 0) return r; break; case UNIT_MOUNT: r = bus_append_cgroup_property(m, field, eq); if (r != 0) return r; r = bus_append_execute_property(m, field, eq); if (r != 0) return r; r = bus_append_kill_property(m, field, eq); if (r != 0) return r; r = bus_append_mount_property(m, field, eq); if (r != 0) return r; break; case UNIT_AUTOMOUNT: r = bus_append_automount_property(m, field, eq); if (r != 0) return r; break; case UNIT_TARGET: case UNIT_DEVICE: case UNIT_SWAP: return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Not supported unit type"); default: return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Invalid unit type"); } r = bus_append_unit_property(m, field, eq); if (r != 0) return r; return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unknown assignment: %s", assignment); } int bus_append_unit_property_assignment_many(sd_bus_message *m, UnitType t, char **l) { char **i; int r; assert(m); STRV_FOREACH(i, l) { r = bus_append_unit_property_assignment(m, t, *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_match_signal_async( bus, &d->slot_job_removed, bus->bus_client ? "org.freedesktop.systemd1" : NULL, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "JobRemoved", match_job_removed, NULL, d); if (r < 0) return r; r = sd_bus_match_signal_async( bus, &d->slot_disconnected, "org.freedesktop.DBus.Local", NULL, "org.freedesktop.DBus.Local", "Disconnected", match_disconnected, NULL, d); if (r < 0) return r; *ret = TAKE_PTR(d); 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); if (!endswith(d->name, ".service")) return -EINVAL; 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" }, { "protocol", "the service did not take the steps required by its unit configuration" }, { "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, ESCAPE_BACKSLASH); if (!strv_isempty((char**) extra_args)) { _cleanup_free_ char *t; t = strv_join((char**) extra_args, " "); systemctl = strjoina("systemctl ", t ? : ""); journalctl = strjoina("journalctl ", t ? : ""); } 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 ?: "", 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 ?: "", 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 ?: ""); } static int check_wait_response(BusWaitForJobs *d, bool quiet, const char* const* extra_args) { 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, "collected")) log_error("Queued job for %s was garbage collected.", strna(d->name)); else if (streq(d->result, "once")) log_error("Unit %s was started already once and can't be started again.", strna(d->name)); else if (!STR_IN_SET(d->result, "done", "skipped")) { if (d->name) { _cleanup_free_ char *result = NULL; int q; q = bus_job_get_service_result(d, &result); if (q < 0) log_debug_errno(q, "Failed to get Result property of unit %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 (STR_IN_SET(d->result, "canceled", "collected")) return -ECANCELED; else if (streq(d->result, "timeout")) return -ETIME; else if (streq(d->result, "dependency")) return -EIO; else if (streq(d->result, "invalid")) return -ENOEXEC; else if (streq(d->result, "assert")) return -EPROTO; else if (streq(d->result, "unsupported")) return -EOPNOTSUPP; else if (streq(d->result, "once")) return -ESTALE; else if (STR_IN_SET(d->result, "done", "skipped")) return 0; return log_debug_errno(SYNTHETIC_ERRNO(EIO), "Unexpected job result, assuming server side newer than us: %s", d->result); } 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, size_t *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, quiet); 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(struct CGroupInfo * const *a, struct CGroupInfo * const *b) { return strcmp((*a)->cgroup_path, (*b)->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)); typesafe_qsort(pids, n, 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 ? SPECIAL_GLYPH_TREE_BRANCH : SPECIAL_GLYPH_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); typesafe_qsort(children, n, 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 ? SPECIAL_GLYPH_TREE_BRANCH : SPECIAL_GLYPH_TREE_RIGHT); fputs(prefix, stdout); fputs(special, stdout); fputs(name, stdout); fputc('\n', stdout); special = special_glyph(more ? SPECIAL_GLYPH_TREE_VERTICAL : SPECIAL_GLYPH_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; typesafe_qsort(pids, n, 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(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(&path_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; } int unit_load_state(sd_bus *bus, const char *name, char **load_state) { _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_free_ char *path = NULL; int r; path = unit_dbus_path_from_name(name); if (!path) return log_oom(); /* This function warns on it's own, because otherwise it'd be awkward to pass * the dbus error message around. */ r = sd_bus_get_property_string( bus, "org.freedesktop.systemd1", path, "org.freedesktop.systemd1.Unit", "LoadState", &error, load_state); if (r < 0) return log_error_errno(r, "Failed to get load state of %s: %s", name, bus_error_message(&error, r)); return 0; }