/* create a new FDB entry or get an existing one. */
int fdb_entry_new_static(
Network *network,
unsigned section,
FdbEntry **ret) {
_cleanup_(fdb_entry_freep) FdbEntry *fdb_entry = NULL;
struct ether_addr *mac_addr = NULL;
assert(network);
assert(ret);
/* search entry in hashmap first. */
if (section) {
fdb_entry = hashmap_get(network->fdb_entries_by_section, UINT_TO_PTR(section));
if (fdb_entry) {
*ret = TAKE_PTR(fdb_entry);
return 0;
}
}
if (network->n_static_fdb_entries >= STATIC_FDB_ENTRIES_PER_NETWORK_MAX)
return -E2BIG;
/* allocate space for MAC address. */
mac_addr = new0(struct ether_addr, 1);
if (!mac_addr)
return -ENOMEM;
/* allocate space for and FDB entry. */
fdb_entry = new0(FdbEntry, 1);
if (!fdb_entry) {
/* free previously allocated space for mac_addr. */
free(mac_addr);
return -ENOMEM;
}
/* init FDB structure. */
fdb_entry->network = network;
fdb_entry->mac_addr = mac_addr;
LIST_PREPEND(static_fdb_entries, network->static_fdb_entries, fdb_entry);
network->n_static_fdb_entries++;
if (section) {
fdb_entry->section = section;
hashmap_put(network->fdb_entries_by_section,
UINT_TO_PTR(fdb_entry->section), fdb_entry);
}
/* return allocated FDB structure. */
*ret = TAKE_PTR(fdb_entry);
return 0;
}
static int acquire_control_dirs(UnitFileScope scope, char **persistent, char **runtime) {
_cleanup_free_ char *a = NULL;
int r;
assert(persistent);
assert(runtime);
switch (scope) {
case UNIT_FILE_SYSTEM: {
_cleanup_free_ char *b = NULL;
a = strdup("/etc/systemd/system.control");
if (!a)
return -ENOMEM;
b = strdup("/run/systemd/system.control");
if (!b)
return -ENOMEM;
*runtime = TAKE_PTR(b);
break;
}
case UNIT_FILE_USER:
r = xdg_user_config_dir(&a, "/systemd/user.control");
if (r < 0 && r != -ENXIO)
return r;
r = xdg_user_runtime_dir(runtime, "/systemd/user.control");
if (r < 0) {
if (r != -ENXIO)
return r;
/* If XDG_RUNTIME_DIR is not set, don't consider this fatal, simply initialize the directory to
* NULL */
*runtime = NULL;
}
break;
case UNIT_FILE_GLOBAL:
return -EOPNOTSUPP;
default:
assert_not_reached("Hmm, unexpected scope value.");
}
*persistent = TAKE_PTR(a);
return 0;
}
static int acquire_generator_dirs(
UnitFileScope scope,
const char *tempdir,
char **generator,
char **generator_early,
char **generator_late) {
_cleanup_free_ char *x = NULL, *y = NULL, *z = NULL;
const char *prefix;
assert(generator);
assert(generator_early);
assert(generator_late);
assert(IN_SET(scope, UNIT_FILE_SYSTEM, UNIT_FILE_USER, UNIT_FILE_GLOBAL));
if (scope == UNIT_FILE_GLOBAL)
return -EOPNOTSUPP;
if (tempdir)
prefix = tempdir;
else if (scope == UNIT_FILE_SYSTEM)
prefix = "/run/systemd";
else if (scope == UNIT_FILE_USER) {
const char *e;
e = getenv("XDG_RUNTIME_DIR");
if (!e)
return -ENXIO;
prefix = strjoina(e, "/systemd");
}
x = strappend(prefix, "/generator");
if (!x)
return -ENOMEM;
y = strappend(prefix, "/generator.early");
if (!y)
return -ENOMEM;
z = strappend(prefix, "/generator.late");
if (!z)
return -ENOMEM;
*generator = TAKE_PTR(x);
*generator_early = TAKE_PTR(y);
*generator_late = TAKE_PTR(z);
return 0;
}
static int acquire_config_dirs(UnitFileScope scope, char **persistent, char **runtime) {
_cleanup_free_ char *a = NULL, *b = NULL;
int r;
assert(persistent);
assert(runtime);
switch (scope) {
case UNIT_FILE_SYSTEM:
a = strdup(SYSTEM_CONFIG_UNIT_PATH);
b = strdup("/run/systemd/system");
break;
case UNIT_FILE_GLOBAL:
a = strdup(USER_CONFIG_UNIT_PATH);
b = strdup("/run/systemd/user");
break;
case UNIT_FILE_USER:
r = xdg_user_config_dir(&a, "/systemd/user");
if (r < 0 && r != -ENXIO)
return r;
r = xdg_user_runtime_dir(runtime, "/systemd/user");
if (r < 0) {
if (r != -ENXIO)
return r;
/* If XDG_RUNTIME_DIR is not set, don't consider that fatal, simply initialize the runtime
* directory to NULL */
*runtime = NULL;
}
*persistent = TAKE_PTR(a);
return 0;
default:
assert_not_reached("Hmm, unexpected scope value.");
}
if (!a || !b)
return -ENOMEM;
*persistent = TAKE_PTR(a);
*runtime = TAKE_PTR(b);
return 0;
}
static int prefix_new_static(Network *network, const char *filename,
unsigned section_line, Prefix **ret) {
_cleanup_(network_config_section_freep) NetworkConfigSection *n = NULL;
_cleanup_(prefix_freep) Prefix *prefix = NULL;
int r;
assert(network);
assert(ret);
assert(!!filename == (section_line > 0));
if (filename) {
r = network_config_section_new(filename, section_line, &n);
if (r < 0)
return r;
if (section_line) {
prefix = hashmap_get(network->prefixes_by_section, n);
if (prefix) {
*ret = TAKE_PTR(prefix);
return 0;
}
}
}
r = prefix_new(&prefix);
if (r < 0)
return r;
prefix->network = network;
LIST_APPEND(prefixes, network->static_prefixes, prefix);
network->n_static_prefixes++;
if (filename) {
prefix->section = TAKE_PTR(n);
r = hashmap_ensure_allocated(&network->prefixes_by_section, &network_config_hash_ops);
if (r < 0)
return r;
r = hashmap_put(network->prefixes_by_section, prefix->section, prefix);
if (r < 0)
return r;
}
*ret = TAKE_PTR(prefix);
return 0;
}
int config_parse_cpu_affinity(
const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
_cleanup_cpu_free_ cpu_set_t *cpuset = NULL;
Settings *settings = data;
int ncpus;
assert(rvalue);
assert(settings);
ncpus = parse_cpu_set_and_warn(rvalue, &cpuset, unit, filename, line, lvalue);
if (ncpus < 0)
return ncpus;
if (ncpus == 0) {
/* An empty assignment resets the CPU list */
settings->cpuset = cpu_set_mfree(settings->cpuset);
settings->cpuset_ncpus = 0;
return 0;
}
if (!settings->cpuset) {
settings->cpuset = TAKE_PTR(cpuset);
settings->cpuset_ncpus = (unsigned) ncpus;
return 0;
}
if (settings->cpuset_ncpus < (unsigned) ncpus) {
CPU_OR_S(CPU_ALLOC_SIZE(settings->cpuset_ncpus), cpuset, settings->cpuset, cpuset);
CPU_FREE(settings->cpuset);
settings->cpuset = TAKE_PTR(cpuset);
settings->cpuset_ncpus = (unsigned) ncpus;
return 0;
}
CPU_OR_S(CPU_ALLOC_SIZE((unsigned) ncpus), settings->cpuset, settings->cpuset, cpuset);
return 0;
}
static int network_link_get_strv(int ifindex, const char *key, char ***ret) {
char path[STRLEN("/run/systemd/netif/links/") + DECIMAL_STR_MAX(ifindex) + 1];
_cleanup_strv_free_ char **a = NULL;
_cleanup_free_ char *s = NULL;
int r;
assert_return(ifindex > 0, -EINVAL);
assert_return(ret, -EINVAL);
xsprintf(path, "/run/systemd/netif/links/%i", ifindex);
r = parse_env_file(path, NEWLINE, key, &s, NULL);
if (r == -ENOENT)
return -ENODATA;
if (r < 0)
return r;
if (isempty(s)) {
*ret = NULL;
return 0;
}
a = strv_split(s, " ");
if (!a)
return -ENOMEM;
strv_uniq(a);
r = strv_length(a);
*ret = TAKE_PTR(a);
return r;
}
static int connect_bus(Context *c, sd_event *event, sd_bus **_bus) {
_cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
int r;
assert(c);
assert(event);
assert(_bus);
r = sd_bus_default_system(&bus);
if (r < 0)
return log_error_errno(r, "Failed to get system bus connection: %m");
r = sd_bus_add_object_vtable(bus, NULL, "/org/freedesktop/hostname1", "org.freedesktop.hostname1", hostname_vtable, c);
if (r < 0)
return log_error_errno(r, "Failed to register object: %m");
r = sd_bus_request_name_async(bus, NULL, "org.freedesktop.hostname1", 0, NULL, NULL);
if (r < 0)
return log_error_errno(r, "Failed to request name: %m");
r = sd_bus_attach_event(bus, event, 0);
if (r < 0)
return log_error_errno(r, "Failed to attach bus to event loop: %m");
*_bus = TAKE_PTR(bus);
return 0;
}
static int find_device(
const struct rfkill_event *event,
sd_device **ret) {
_cleanup_(sd_device_unrefp) sd_device *device = NULL;
_cleanup_free_ char *sysname = NULL;
const char *name;
int r;
assert(event);
assert(ret);
if (asprintf(&sysname, "rfkill%i", event->idx) < 0)
return log_oom();
r = sd_device_new_from_subsystem_sysname(&device, "rfkill", sysname);
if (r < 0)
return log_full_errno(IN_SET(r, -ENOENT, -ENXIO, -ENODEV) ? LOG_DEBUG : LOG_ERR, r,
"Failed to open device '%s': %m", sysname);
r = sd_device_get_sysattr_value(device, "name", &name);
if (r < 0)
return log_debug_errno(r, "Device has no name, ignoring: %m");
log_debug("Operating on rfkill device '%s'.", name);
*ret = TAKE_PTR(device);
return 0;
}
static int file_of_seat(const char *seat, char **_p) {
char *p;
int r;
assert(_p);
if (seat) {
if (!filename_is_valid(seat))
return -EINVAL;
p = strappend("/run/systemd/seats/", seat);
} else {
_cleanup_free_ char *buf = NULL;
r = sd_session_get_seat(NULL, &buf);
if (r < 0)
return r;
p = strappend("/run/systemd/seats/", buf);
}
if (!p)
return -ENOMEM;
*_p = TAKE_PTR(p);
return 0;
}
int raw_export_new(
RawExport **ret,
sd_event *event,
RawExportFinished on_finished,
void *userdata) {
_cleanup_(raw_export_unrefp) RawExport *e = NULL;
int r;
assert(ret);
e = new0(RawExport, 1);
if (!e)
return -ENOMEM;
e->output_fd = e->input_fd = -1;
e->on_finished = on_finished;
e->userdata = userdata;
RATELIMIT_INIT(e->progress_rate_limit, 100 * USEC_PER_MSEC, 1);
e->last_percent = (unsigned) -1;
if (event)
e->event = sd_event_ref(event);
else {
r = sd_event_default(&e->event);
if (r < 0)
return r;
}
*ret = TAKE_PTR(e);
return 0;
}
static int network_get_strv(const char *key, char ***ret) {
_cleanup_strv_free_ char **a = NULL;
_cleanup_free_ char *s = NULL;
int r;
assert_return(ret, -EINVAL);
r = parse_env_file("/run/systemd/netif/state", NEWLINE, key, &s, NULL);
if (r == -ENOENT)
return -ENODATA;
if (r < 0)
return r;
if (isempty(s)) {
*ret = NULL;
return 0;
}
a = strv_split(s, " ");
if (!a)
return -ENOMEM;
strv_uniq(a);
r = strv_length(a);
*ret = TAKE_PTR(a);
return r;
}
static int extract_pretty(const char *path, const char *suffix, char **ret) {
_cleanup_free_ char *name = NULL;
const char *p;
size_t n;
assert(path);
assert(ret);
p = last_path_component(path);
n = strcspn(p, "/");
name = strndup(p, n);
if (!name)
return -ENOMEM;
if (suffix) {
char *e;
e = endswith(name, suffix);
if (!e)
return -EINVAL;
*e = 0;
}
if (!image_name_is_valid(name))
return -EINVAL;
*ret = TAKE_PTR(name);
return 0;
}
static int manager_new(Manager **ret) {
_cleanup_(manager_unrefp) Manager *m = NULL;
int r;
assert(ret);
m = new0(Manager, 1);
if (!m)
return -ENOMEM;
m->machines = hashmap_new(&string_hash_ops);
m->machine_units = hashmap_new(&string_hash_ops);
m->machine_leaders = hashmap_new(NULL);
if (!m->machines || !m->machine_units || !m->machine_leaders)
return -ENOMEM;
r = sd_event_default(&m->event);
if (r < 0)
return r;
r = sd_event_add_signal(m->event, NULL, SIGINT, NULL, NULL);
if (r < 0)
return r;
r = sd_event_add_signal(m->event, NULL, SIGTERM, NULL, NULL);
if (r < 0)
return r;
(void) sd_event_set_watchdog(m->event, true);
*ret = TAKE_PTR(m);
return 0;
}
int find_converted_keymap(const char *x11_layout, const char *x11_variant, char **new_keymap) {
const char *dir;
_cleanup_free_ char *n;
if (x11_variant)
n = strjoin(x11_layout, "-", x11_variant);
else
n = strdup(x11_layout);
if (!n)
return -ENOMEM;
NULSTR_FOREACH(dir, KBD_KEYMAP_DIRS) {
_cleanup_free_ char *p = NULL, *pz = NULL;
bool uncompressed;
p = strjoin(dir, "xkb/", n, ".map");
pz = strjoin(dir, "xkb/", n, ".map.gz");
if (!p || !pz)
return -ENOMEM;
uncompressed = access(p, F_OK) == 0;
if (uncompressed || access(pz, F_OK) == 0) {
log_debug("Found converted keymap %s at %s",
n, uncompressed ? p : pz);
*new_keymap = TAKE_PTR(n);
return 1;
}
}
static int allocate_journal_field(int fd, size_t size, char **ret, size_t *ret_size) {
_cleanup_free_ char *field = NULL;
ssize_t n;
assert(fd >= 0);
assert(ret);
assert(ret_size);
if (lseek(fd, 0, SEEK_SET) == (off_t) -1)
return log_warning_errno(errno, "Failed to seek: %m");
field = malloc(9 + size);
if (!field) {
log_warning("Failed to allocate memory for coredump, coredump will not be stored.");
return -ENOMEM;
}
memcpy(field, "COREDUMP=", 9);
n = read(fd, field + 9, size);
if (n < 0)
return log_error_errno((int) n, "Failed to read core data: %m");
if ((size_t) n < size) {
log_error("Core data too short.");
return -EIO;
}
*ret = TAKE_PTR(field);
*ret_size = size + 9;
return 0;
}
int get_locales(char ***ret) {
_cleanup_set_free_ Set *locales = NULL;
_cleanup_strv_free_ char **l = NULL;
int r;
locales = set_new(&string_hash_ops);
if (!locales)
return -ENOMEM;
r = add_locales_from_archive(locales);
if (r < 0 && r != -ENOENT)
return r;
r = add_locales_from_libdir(locales);
if (r < 0)
return r;
l = set_get_strv(locales);
if (!l)
return -ENOMEM;
strv_sort(l);
*ret = TAKE_PTR(l);
return 0;
}
int device_wait_for_initialization(sd_device *device, const char *subsystem, sd_device **ret) {
_cleanup_(sd_device_monitor_unrefp) sd_device_monitor *monitor = NULL;
_cleanup_(sd_event_unrefp) sd_event *event = NULL;
struct DeviceMonitorData data = {};
int r;
assert(device);
assert(subsystem);
if (sd_device_get_is_initialized(device) > 0) {
if (ret)
*ret = sd_device_ref(device);
return 0;
}
assert_se(sd_device_get_sysname(device, &data.sysname) >= 0);
/* Wait until the device is initialized, so that we can get access to the ID_PATH property */
r = sd_event_new(&event);
if (r < 0)
return log_error_errno(r, "Failed to get default event: %m");
r = sd_device_monitor_new(&monitor);
if (r < 0)
return log_error_errno(r, "Failed to acquire monitor: %m");
r = sd_device_monitor_filter_add_match_subsystem_devtype(monitor, subsystem, NULL);
if (r < 0)
return log_error_errno(r, "Failed to add %s subsystem match to monitor: %m", subsystem);
r = sd_device_monitor_attach_event(monitor, event);
if (r < 0)
return log_error_errno(r, "Failed to attach event to device monitor: %m");
r = sd_device_monitor_start(monitor, device_monitor_handler, &data);
if (r < 0)
return log_error_errno(r, "Failed to start device monitor: %m");
/* Check again, maybe things changed. Udev will re-read the db if the device wasn't initialized
* yet. */
if (sd_device_get_is_initialized(device) > 0) {
if (ret)
*ret = sd_device_ref(device);
return 0;
}
r = sd_event_loop(event);
if (r < 0)
return log_error_errno(r, "Event loop failed: %m");
if (ret)
*ret = TAKE_PTR(data.device);
return 0;
}
int settings_load(FILE *f, const char *path, Settings **ret) {
_cleanup_(settings_freep) Settings *s = NULL;
int r;
assert(path);
assert(ret);
s = new0(Settings, 1);
if (!s)
return -ENOMEM;
s->start_mode = _START_MODE_INVALID;
s->personality = PERSONALITY_INVALID;
s->userns_mode = _USER_NAMESPACE_MODE_INVALID;
s->resolv_conf = _RESOLV_CONF_MODE_INVALID;
s->link_journal = _LINK_JOURNAL_INVALID;
s->timezone = _TIMEZONE_MODE_INVALID;
s->uid_shift = UID_INVALID;
s->uid_range = UID_INVALID;
s->no_new_privileges = -1;
s->read_only = -1;
s->volatile_mode = _VOLATILE_MODE_INVALID;
s->userns_chown = -1;
s->private_network = -1;
s->network_veth = -1;
r = config_parse(NULL, path, f,
"Exec\0"
"Network\0"
"Files\0",
config_item_perf_lookup, nspawn_gperf_lookup,
CONFIG_PARSE_WARN,
s);
if (r < 0)
return r;
/* Make sure that if userns_mode is set, userns_chown is set to something appropriate, and vice versa. Either
* both fields shall be initialized or neither. */
if (s->userns_mode == USER_NAMESPACE_PICK)
s->userns_chown = true;
else if (s->userns_mode != _USER_NAMESPACE_MODE_INVALID && s->userns_chown < 0)
s->userns_chown = false;
if (s->userns_chown >= 0 && s->userns_mode == _USER_NAMESPACE_MODE_INVALID)
s->userns_mode = USER_NAMESPACE_NO;
*ret = TAKE_PTR(s);
return 0;
}
static int routing_policy_rule_new_static(Network *network, const char *filename, unsigned section_line, RoutingPolicyRule **ret) {
_cleanup_routing_policy_rule_free_ RoutingPolicyRule *rule = NULL;
_cleanup_network_config_section_free_ NetworkConfigSection *n = NULL;
int r;
assert(network);
assert(ret);
assert(!!filename == (section_line > 0));
r = network_config_section_new(filename, section_line, &n);
if (r < 0)
return r;
rule = hashmap_get(network->rules_by_section, n);
if (rule) {
*ret = TAKE_PTR(rule);
return 0;
}
r = routing_policy_rule_new(&rule);
if (r < 0)
return r;
rule->section = n;
rule->network = network;
n = NULL;
r = hashmap_put(network->rules_by_section, rule->section, rule);
if (r < 0)
return r;
LIST_APPEND(rules, network->rules, rule);
network->n_rules++;
*ret = TAKE_PTR(rule);
return 0;
}
static int prompt_root_password(void) {
const char *msg1, *msg2, *etc_shadow;
int r;
if (arg_root_password)
return 0;
if (!arg_prompt_root_password)
return 0;
etc_shadow = prefix_roota(arg_root, "/etc/shadow");
if (laccess(etc_shadow, F_OK) >= 0)
return 0;
print_welcome();
putchar('\n');
msg1 = strjoina(special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET), " Please enter a new root password (empty to skip): ");
msg2 = strjoina(special_glyph(SPECIAL_GLYPH_TRIANGULAR_BULLET), " Please enter new root password again: ");
for (;;) {
_cleanup_strv_free_erase_ char **a = NULL, **b = NULL;
r = ask_password_tty(-1, msg1, NULL, 0, 0, NULL, &a);
if (r < 0)
return log_error_errno(r, "Failed to query root password: %m");
if (strv_length(a) != 1) {
log_warning("Received multiple passwords, where we expected one.");
return -EINVAL;
}
if (isempty(*a)) {
log_warning("No password entered, skipping.");
break;
}
r = ask_password_tty(-1, msg2, NULL, 0, 0, NULL, &b);
if (r < 0)
return log_error_errno(r, "Failed to query root password: %m");
if (!streq(*a, *b)) {
log_error("Entered passwords did not match, please try again.");
continue;
}
arg_root_password = TAKE_PTR(*a);
break;
}
return 0;
}
static int determine_matches(const char *image, char **l, bool allow_any, char ***ret) {
_cleanup_strv_free_ char **k = NULL;
int r;
/* Determine the matches to apply. If the list is empty we derive the match from the image name. If the list
* contains exactly the "-" we return a wildcard list (which is the empty list), but only if this is expressly
* permitted. */
if (strv_isempty(l)) {
char *prefix;
r = extract_prefix(image, &prefix);
if (r < 0)
return log_error_errno(r, "Failed to extract prefix of image name '%s': %m", image);
if (!arg_quiet)
log_info("(Matching unit files with prefix '%s'.)", prefix);
r = strv_consume(&k, prefix);
if (r < 0)
return log_oom();
} else if (strv_equal(l, STRV_MAKE("-"))) {
if (!allow_any)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Refusing all unit file match.");
if (!arg_quiet)
log_info("(Matching all unit files.)");
} else {
k = strv_copy(l);
if (!k)
return log_oom();
if (!arg_quiet) {
_cleanup_free_ char *joined = NULL;
joined = strv_join(k, "', '");
if (!joined)
return log_oom();
log_info("(Matching unit files with prefixes '%s'.)", joined);
}
}
*ret = TAKE_PTR(k);
return 0;
}
int prefix_new(Prefix **ret) {
_cleanup_(prefix_freep) Prefix *prefix = NULL;
prefix = new0(Prefix, 1);
if (!prefix)
return -ENOMEM;
if (sd_radv_prefix_new(&prefix->radv_prefix) < 0)
return -ENOMEM;
*ret = TAKE_PTR(prefix);
return 0;
}
int network_config_section_new(const char *filename, unsigned line, NetworkConfigSection **s) {
NetworkConfigSection *cs;
cs = malloc0(offsetof(NetworkConfigSection, filename) + strlen(filename) + 1);
if (!cs)
return -ENOMEM;
strcpy(cs->filename, filename);
cs->line = line;
*s = TAKE_PTR(cs);
return 0;
}
static int manager_add_host_machine(Manager *m) {
_cleanup_free_ char *rd = NULL, *unit = NULL;
sd_id128_t mid;
Machine *t;
int r;
if (m->host_machine)
return 0;
r = sd_id128_get_machine(&mid);
if (r < 0)
return log_error_errno(r, "Failed to get machine ID: %m");
rd = strdup("/");
if (!rd)
return log_oom();
unit = strdup(SPECIAL_ROOT_SLICE);
if (!unit)
return log_oom();
t = machine_new(m, MACHINE_HOST, ".host");
if (!t)
return log_oom();
t->leader = 1;
t->id = mid;
t->root_directory = TAKE_PTR(rd);
t->unit = TAKE_PTR(unit);
dual_timestamp_from_boottime_or_monotonic(&t->timestamp, 0);
m->host_machine = t;
return 0;
}
int locale_write_data(Context *c, char ***settings) {
int r, p;
_cleanup_strv_free_ char **l = NULL;
/* Set values will be returned as strv in *settings on success. */
r = load_env_file(NULL, "/etc/locale.conf", NULL, &l);
if (r < 0 && r != -ENOENT)
return r;
for (p = 0; p < _VARIABLE_LC_MAX; p++) {
_cleanup_free_ char *t = NULL;
char **u;
const char *name;
name = locale_variable_to_string(p);
assert(name);
if (isempty(c->locale[p])) {
l = strv_env_unset(l, name);
continue;
}
if (asprintf(&t, "%s=%s", name, c->locale[p]) < 0)
return -ENOMEM;
u = strv_env_set(l, t);
if (!u)
return -ENOMEM;
strv_free(l);
l = u;
}
if (strv_isempty(l)) {
if (unlink("/etc/locale.conf") < 0)
return errno == ENOENT ? 0 : -errno;
return 0;
}
r = write_env_file_label("/etc/locale.conf", l);
if (r < 0)
return r;
*settings = TAKE_PTR(l);
return 0;
}
/* Retrieve existing subsystems. This function is called in a new cgroup
* namespace.
*/
static int get_process_controllers(Set **ret) {
_cleanup_set_free_free_ Set *controllers = NULL;
_cleanup_fclose_ FILE *f = NULL;
int r;
assert(ret);
controllers = set_new(&string_hash_ops);
if (!controllers)
return -ENOMEM;
f = fopen("/proc/self/cgroup", "re");
if (!f)
return errno == ENOENT ? -ESRCH : -errno;
for (;;) {
_cleanup_free_ char *line = NULL;
char *e, *l;
r = read_line(f, LONG_LINE_MAX, &line);
if (r < 0)
return r;
if (r == 0)
break;
l = strchr(line, ':');
if (!l)
continue;
l++;
e = strchr(l, ':');
if (!e)
continue;
*e = 0;
if (STR_IN_SET(l, "", "name=systemd", "name=unified"))
continue;
r = set_put_strdup(controllers, l);
if (r < 0)
return r;
}
*ret = TAKE_PTR(controllers);
return 0;
}
static int image_new(
ImageType t,
const char *pretty,
const char *path,
const char *filename,
bool read_only,
usec_t crtime,
usec_t mtime,
Image **ret) {
_cleanup_(image_unrefp) Image *i = NULL;
assert(t >= 0);
assert(t < _IMAGE_TYPE_MAX);
assert(pretty);
assert(filename);
assert(ret);
i = new0(Image, 1);
if (!i)
return -ENOMEM;
i->n_ref = 1;
i->type = t;
i->read_only = read_only;
i->crtime = crtime;
i->mtime = mtime;
i->usage = i->usage_exclusive = (uint64_t) -1;
i->limit = i->limit_exclusive = (uint64_t) -1;
i->name = strdup(pretty);
if (!i->name)
return -ENOMEM;
if (path)
i->path = strjoin(path, "/", filename);
else
i->path = strdup(filename);
if (!i->path)
return -ENOMEM;
path_simplify(i->path, false);
*ret = TAKE_PTR(i);
return 0;
}
int locale_write_data(Context *c, char ***settings) {
_cleanup_strv_free_ char **l = NULL;
struct stat st;
int r, p;
/* Set values will be returned as strv in *settings on success. */
for (p = 0; p < _VARIABLE_LC_MAX; p++) {
_cleanup_free_ char *t = NULL;
char **u;
const char *name;
name = locale_variable_to_string(p);
assert(name);
if (isempty(c->locale[p]))
continue;
if (asprintf(&t, "%s=%s", name, c->locale[p]) < 0)
return -ENOMEM;
u = strv_env_set(l, t);
if (!u)
return -ENOMEM;
strv_free_and_replace(l, u);
}
if (strv_isempty(l)) {
if (unlink("/etc/locale.conf") < 0)
return errno == ENOENT ? 0 : -errno;
c->locale_mtime = USEC_INFINITY;
return 0;
}
r = write_env_file_label("/etc/locale.conf", l);
if (r < 0)
return r;
*settings = TAKE_PTR(l);
if (stat("/etc/locale.conf", &st) >= 0)
c->locale_mtime = timespec_load(&st.st_mtim);
return 0;
}
_public_ int sd_network_get_operational_state(char **state) {
_cleanup_free_ char *s = NULL;
int r;
assert_return(state, -EINVAL);
r = parse_env_file("/run/systemd/netif/state", NEWLINE, "OPER_STATE", &s, NULL);
if (r == -ENOENT)
return -ENODATA;
if (r < 0)
return r;
if (isempty(s))
return -ENODATA;
*state = TAKE_PTR(s);
return 0;
}