/* 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 "list.h"
#include "locale-util.h"
#include "mount-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 "socket-protocol-list.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) { \
log_error("Failed to parse %s: %s", field, eq); \
return -EINVAL; \
} \
\
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", socket_protocol_from_name);
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 inline 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. :-( */
log_error("Sorry, but +, ! and !! are currently not supported for transient services.");
return -EOPNOTSUPP;
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, "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_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));
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_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);
}
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) {
log_error("Failed to parse %s value %s.", field, eq);
return -EINVAL;
}
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) {
log_error("Failed to parse %s value %s.", field, eq);
return -EINVAL;
}
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 (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 {
r = in_addr_prefix_from_string_auto(eq, &family, &prefix, &prefixlen);
if (r < 0)
return log_error_errno(r, "Failed to parse IP address prefix: %s", eq);
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, "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
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) {
log_error("Missing argument after ':': %s", eq);
return -EINVAL;
}
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 {
log_error("Unknown options: %s", eq);
return -EINVAL;
}
}
} 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) {
log_error("Failed to parse argument: %s", p);
return -EINVAL;
}
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 (streq(field, "KillSignal"))
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_socket_protocol_from_name(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 (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) {
log_error("Not an assignment: %s", assignment);
return -EINVAL;
}
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:
log_error("Not supported unit type");
return -EINVAL;
default:
log_error("Invalid unit type");
return -EINVAL;
}
r = bus_append_unit_property(m, field, eq);
if (r != 0)
return r;
log_error("Unknown assignment: %s", assignment);
return -EINVAL;
}
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 ? : "<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) {
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;
log_debug("Unexpected job result, assuming server side newer than us: %s", d->result);
return -EIO;
}
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(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(&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;
}