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systemd/src/core/load-fragment.c
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Matt Fleming 4dcbfbb1ad process-util: Add support SCHED_EXT scheduling policy 
Allow CPUSchedulingPolicy to be set to "ext". SCHED_EXT is a new
scheduling policy in Linux v6.12 that allows processes to be scheduled
using custom BPF schedulers instead of the default in-kernel ones.

Selectively setting the SCHED_EXT policy is useful for systems running
in "partial mode" where not all processes are run using a custom
scheduler.

Fallback to SCHED_OTHER and print an error message for systems where
SCHED_EXT isn't available.
2025-12-20 18:31:55 +01:00

6654 lines
230 KiB
C
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/***
Copyright © 2012 Holger Hans Peter Freyther
***/
#include <fcntl.h>
#include <sched.h>
#include <unistd.h>
#include "sd-bus.h"
#include "sd-messages.h"
#include "af-list.h"
#include "all-units.h"
#include "alloc-util.h"
#include "bpf-program.h"
#include "bpf-restrict-fs.h"
#include "bus-error.h"
#include "calendarspec.h"
#include "capability-util.h"
#include "cgroup-setup.h"
#include "condition.h"
#include "conf-parser.h"
#include "coredump-util.h"
#include "cpu-set-util.h"
#include "creds-util.h"
#include "dissect-image.h"
#include "env-util.h"
#include "escape.h"
#include "exec-credential.h"
#include "execute.h"
#include "extract-word.h"
#include "fd-util.h"
#include "fstab-util.h"
#include "hashmap.h"
#include "hexdecoct.h"
#include "hostname-util.h"
#include "ioprio-util.h"
#include "iovec-util.h"
#include "ip-protocol-list.h"
#include "journal-file.h"
#include "limits-util.h"
#include "load-fragment.h"
#include "log.h"
#include "manager.h"
#include "mountpoint-util.h"
#include "nsflags.h"
#include "nulstr-util.h"
#include "open-file.h"
#include "ordered-set.h"
#include "parse-helpers.h"
#include "parse-util.h"
#include "path-util.h"
#include "pcre2-util.h"
#include "percent-util.h"
#include "process-util.h"
#include "reboot-util.h"
#include "seccomp-util.h"
#include "securebits-util.h"
#include "selinux-util.h"
#include "set.h"
#include "show-status.h"
#include "signal-util.h"
#include "socket-netlink.h"
#include "specifier.h"
#include "stat-util.h"
#include "string-util.h"
#include "strv.h"
#include "syslog-util.h"
#include "time-util.h"
#include "unit-name.h"
#include "unit-printf.h"
#include "user-util.h"
#include "web-util.h"
static int parse_socket_protocol(const char *s) {
int r;
r = parse_ip_protocol(s);
if (r < 0)
return r;
if (!IN_SET(r, IPPROTO_UDPLITE, IPPROTO_SCTP, IPPROTO_MPTCP))
return -EPROTONOSUPPORT;
return r;
}
int parse_crash_chvt(const char *value, int *data) {
int b;
if (safe_atoi(value, data) >= 0)
return 0;
b = parse_boolean(value);
if (b < 0)
return b;
if (b > 0)
*data = 0; /* switch to where kmsg goes */
else
*data = -1; /* turn off switching */
return 0;
}
int parse_confirm_spawn(const char *value, char **console) {
char *s;
int r;
r = value ? parse_boolean(value) : 1;
if (r == 0) {
*console = NULL;
return 0;
} else if (r > 0) /* on with default tty */
s = strdup("/dev/console");
else if (is_path(value)) /* on with fully qualified path */
s = strdup(value);
else /* on with only a tty file name, not a fully qualified path */
s = path_join("/dev/", value);
if (!s)
return -ENOMEM;
*console = s;
return 0;
}
DEFINE_CONFIG_PARSE(config_parse_socket_protocol, parse_socket_protocol);
DEFINE_CONFIG_PARSE(config_parse_exec_secure_bits, secure_bits_from_string);
DEFINE_CONFIG_PARSE_ENUM(config_parse_collect_mode, collect_mode, CollectMode);
DEFINE_CONFIG_PARSE_ENUM(config_parse_device_policy, cgroup_device_policy, CGroupDevicePolicy);
DEFINE_CONFIG_PARSE_ENUM(config_parse_exec_keyring_mode, exec_keyring_mode, ExecKeyringMode);
DEFINE_CONFIG_PARSE_ENUM(config_parse_protect_proc, protect_proc, ProtectProc);
DEFINE_CONFIG_PARSE_ENUM(config_parse_proc_subset, proc_subset, ProcSubset);
DEFINE_CONFIG_PARSE_ENUM(config_parse_private_bpf, private_bpf, PrivateBPF);
DEFINE_CONFIG_PARSE_ENUM(config_parse_private_tmp, private_tmp, PrivateTmp);
DEFINE_CONFIG_PARSE_ENUM(config_parse_private_users, private_users, PrivateUsers);
DEFINE_CONFIG_PARSE_ENUM(config_parse_private_pids, private_pids, PrivatePIDs);
DEFINE_CONFIG_PARSE_ENUM(config_parse_protect_control_groups, protect_control_groups, ProtectControlGroups);
DEFINE_CONFIG_PARSE_ENUM(config_parse_exec_utmp_mode, exec_utmp_mode, ExecUtmpMode);
DEFINE_CONFIG_PARSE_ENUM(config_parse_job_mode, job_mode, JobMode);
DEFINE_CONFIG_PARSE_ENUM(config_parse_notify_access, notify_access, NotifyAccess);
DEFINE_CONFIG_PARSE_ENUM(config_parse_protect_home, protect_home, ProtectHome);
DEFINE_CONFIG_PARSE_ENUM(config_parse_protect_system, protect_system, ProtectSystem);
DEFINE_CONFIG_PARSE_ENUM(config_parse_exec_preserve_mode, exec_preserve_mode, ExecPreserveMode);
DEFINE_CONFIG_PARSE_ENUM(config_parse_service_type, service_type, ServiceType);
DEFINE_CONFIG_PARSE_ENUM(config_parse_service_exit_type, service_exit_type, ServiceExitType);
DEFINE_CONFIG_PARSE_ENUM(config_parse_service_restart, service_restart, ServiceRestart);
DEFINE_CONFIG_PARSE_ENUM(config_parse_service_restart_mode, service_restart_mode, ServiceRestartMode);
DEFINE_CONFIG_PARSE_ENUM(config_parse_service_timeout_failure_mode, service_timeout_failure_mode, ServiceTimeoutFailureMode);
DEFINE_CONFIG_PARSE_ENUM(config_parse_socket_bind, socket_address_bind_ipv6_only_or_bool, SocketAddressBindIPv6Only);
DEFINE_CONFIG_PARSE_ENUM(config_parse_oom_policy, oom_policy, OOMPolicy);
DEFINE_CONFIG_PARSE_ENUM(config_parse_managed_oom_preference, managed_oom_preference, ManagedOOMPreference);
DEFINE_CONFIG_PARSE_ENUM(config_parse_memory_pressure_watch, cgroup_pressure_watch, CGroupPressureWatch);
DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_ip_tos, ip_tos, int, -1);
DEFINE_CONFIG_PARSE_PTR(config_parse_cg_weight, cg_weight_parse, uint64_t);
DEFINE_CONFIG_PARSE_PTR(config_parse_cg_cpu_weight, cg_cpu_weight_parse, uint64_t);
DEFINE_CONFIG_PARSE_PTR(config_parse_exec_mount_propagation_flag, mount_propagation_flag_from_string, unsigned long);
DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_numa_policy, mpol, int, -1);
DEFINE_CONFIG_PARSE_ENUM(config_parse_status_unit_format, status_unit_format, StatusUnitFormat);
DEFINE_CONFIG_PARSE_ENUM_FULL(config_parse_socket_timestamping, socket_timestamping_from_string_harder, SocketTimestamping);
DEFINE_CONFIG_PARSE_ENUM(config_parse_socket_defer_trigger, socket_defer_trigger, SocketDeferTrigger);
DEFINE_CONFIG_PARSE_PTR(config_parse_bpf_delegate_commands, bpf_delegate_commands_from_string, uint64_t);
DEFINE_CONFIG_PARSE_PTR(config_parse_bpf_delegate_maps, bpf_delegate_maps_from_string, uint64_t);
DEFINE_CONFIG_PARSE_PTR(config_parse_bpf_delegate_programs, bpf_delegate_programs_from_string, uint64_t);
DEFINE_CONFIG_PARSE_PTR(config_parse_bpf_delegate_attachments, bpf_delegate_attachments_from_string, uint64_t);
bool contains_instance_specifier_superset(const char *s) {
const char *p, *q;
bool percent = false;
assert(s);
p = strchr(s, '@');
if (!p)
return false;
p++; /* Skip '@' */
q = strrchr(p, '.');
if (!q)
q = p + strlen(p);
/* If the string is just the instance specifier, it's not a superset of the instance. */
if (memcmp_nn(p, q - p, "%i", strlen("%i")) == 0)
return false;
/* %i, %n and %N all expand to the instance or a superset of it. */
for (; p < q; p++)
if (*p == '%')
percent = !percent;
else if (percent) {
if (IN_SET(*p, 'n', 'N', 'i'))
return true;
percent = false;
}
return false;
}
/* `name` is the rendered version of `format` via `unit_printf` or similar functions. */
int unit_is_likely_recursive_template_dependency(Unit *u, const char *name, const char *format) {
const char *fragment_path;
int r;
assert(u);
assert(name);
/* If a template unit has a direct dependency on itself that includes the unit instance as part of
* the template instance via a unit specifier (%i, %n or %N), this will almost certainly lead to
* infinite recursion as systemd will keep instantiating new instances of the template unit.
* https://github.com/systemd/systemd/issues/17602 shows a good example of how this can happen in
* practice. To guard against this, we check for templates that depend on themselves and have the
* instantiated unit instance included as part of the template instance of the dependency via a
* specifier.
*
* For example, if systemd-notify@.service depends on systemd-notify@%n.service, this will result in
* infinite recursion.
*/
if (!unit_name_is_valid(name, UNIT_NAME_INSTANCE))
return false;
if (!unit_name_prefix_equal(u->id, name))
return false;
if (u->type != unit_name_to_type(name))
return false;
r = unit_file_find_fragment(u->manager->unit_id_map, u->manager->unit_name_map, name, &fragment_path, NULL);
if (r < 0)
return r;
/* Fragment paths should also be equal as a custom fragment for a specific template instance
* wouldn't necessarily lead to infinite recursion. */
if (!path_equal(u->fragment_path, fragment_path))
return false;
if (!contains_instance_specifier_superset(format))
return false;
return true;
}
int config_parse_unit_deps(
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) {
UnitDependency d = ltype;
Unit *u = userdata;
assert(filename);
assert(lvalue);
assert(rvalue);
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL, *k = NULL;
int r;
r = extract_first_word(&p, &word, NULL, EXTRACT_RETAIN_ESCAPE);
if (r == 0)
return 0;
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
return 0;
}
r = unit_name_printf(u, word, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", word);
continue;
}
r = unit_is_likely_recursive_template_dependency(u, k, word);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to determine if '%s' is a recursive dependency, ignoring: %m", k);
continue;
}
if (r > 0) {
log_syntax(unit, LOG_DEBUG, filename, line, 0,
"Dropping dependency %s=%s that likely leads to infinite recursion.",
unit_dependency_to_string(d), word);
continue;
}
r = unit_add_dependency_by_name(u, d, k, true, UNIT_DEPENDENCY_FILE);
if (r < 0)
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to add dependency on %s, ignoring: %m", k);
}
}
int config_parse_obsolete_unit_deps(
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) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Unit dependency type %s= is obsolete, replacing by %s=, please update your unit file", lvalue, unit_dependency_to_string(ltype));
return config_parse_unit_deps(unit, filename, line, section, section_line, lvalue, ltype, rvalue, data, userdata);
}
int config_parse_unit_string_printf(
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_free_ char *k = NULL;
const Unit *u = ASSERT_PTR(userdata);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
r = unit_full_printf(u, rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
return 0;
}
return config_parse_string(unit, filename, line, section, section_line, lvalue, ltype, k, data, userdata);
}
int config_parse_reboot_parameter(
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_free_ char *k = NULL;
const Unit *u = ASSERT_PTR(userdata);
int r;
assert(filename);
assert(line);
assert(rvalue);
r = unit_full_printf(u, rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
return 0;
}
if (!reboot_parameter_is_valid(k)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid reboot parameter '%s', ignoring.", k);
return 0;
}
return config_parse_string(unit, filename, line, section, section_line, lvalue, ltype, k, data, userdata);
}
int config_parse_unit_strv_printf(
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) {
const Unit *u = ASSERT_PTR(userdata);
_cleanup_free_ char *k = NULL;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
r = unit_full_printf(u, rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
return 0;
}
return config_parse_strv(unit, filename, line, section, section_line, lvalue, ltype, k, data, userdata);
}
int config_parse_unit_path_printf(
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_free_ char *k = NULL;
const Unit *u = ASSERT_PTR(userdata);
int r;
bool fatal = ltype;
assert(filename);
assert(lvalue);
assert(rvalue);
r = unit_path_printf(u, rvalue, &k);
if (r < 0) {
log_syntax(unit, fatal ? LOG_ERR : LOG_WARNING, filename, line, r,
"Failed to resolve unit specifiers in '%s'%s: %m",
rvalue, fatal ? "" : ", ignoring");
return fatal ? -ENOEXEC : 0;
}
return config_parse_path(unit, filename, line, section, section_line, lvalue, ltype, k, data, userdata);
}
int config_parse_colon_separated_paths(
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) {
char ***sv = ASSERT_PTR(data);
const Unit *u = ASSERT_PTR(userdata);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
*sv = strv_free(*sv);
return 0;
}
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL, *k = NULL;
r = extract_first_word(&p, &word, ":", EXTRACT_DONT_COALESCE_SEPARATORS);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to extract first word, ignoring: %s", rvalue);
return 0;
}
if (r == 0)
break;
r = unit_path_printf(u, word, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve unit specifiers in '%s', ignoring: %m", word);
return 0;
}
r = path_simplify_and_warn(k, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
if (r < 0)
return 0;
r = strv_consume(sv, TAKE_PTR(k));
if (r < 0)
return log_oom();
}
return 0;
}
int config_parse_unit_path_strv_printf(
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) {
char ***x = data;
const Unit *u = ASSERT_PTR(userdata);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
*x = strv_free(*x);
return 0;
}
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL, *k = NULL;
r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
if (r == 0)
return 0;
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Invalid syntax, ignoring: %s", rvalue);
return 0;
}
r = unit_path_printf(u, word, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve unit specifiers in '%s', ignoring: %m", word);
return 0;
}
r = path_simplify_and_warn(k, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
if (r < 0)
return 0;
r = strv_consume(x, TAKE_PTR(k));
if (r < 0)
return log_oom();
}
}
static int patch_var_run(
const char *unit,
const char *filename,
unsigned line,
const char *lvalue,
char **path) {
const char *e;
char *z;
e = path_startswith(*path, "/var/run/");
if (!e)
return 0;
z = path_join("/run/", e);
if (!z)
return log_oom();
log_syntax(unit, LOG_NOTICE, filename, line, 0,
"%s= references a path below legacy directory /var/run/, updating %s → %s; "
"please update the unit file accordingly.", lvalue, *path, z);
free_and_replace(*path, z);
return 1;
}
int config_parse_socket_listen(
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) {
Socket *s = ASSERT_PTR(SOCKET(data));
_cleanup_free_ SocketPort *p = NULL;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* An empty assignment removes all ports */
socket_free_ports(s);
return 0;
}
p = new(SocketPort, 1);
if (!p)
return log_oom();
*p = (SocketPort) {
.socket = s,
.fd = -EBADF,
};
if (ltype != SOCKET_SOCKET) {
_cleanup_free_ char *k = NULL;
r = unit_path_printf(UNIT(s), rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
return 0;
}
PathSimplifyWarnFlags flags = PATH_CHECK_ABSOLUTE;
if (ltype != SOCKET_SPECIAL)
flags |= PATH_CHECK_NON_API_VFS;
r = path_simplify_and_warn(k, flags, unit, filename, line, lvalue);
if (r < 0)
return 0;
if (ltype == SOCKET_FIFO) {
r = patch_var_run(unit, filename, line, lvalue, &k);
if (r < 0)
return r;
}
free_and_replace(p->path, k);
p->type = ltype;
} else if (streq(lvalue, "ListenNetlink")) {
_cleanup_free_ char *k = NULL;
r = unit_path_printf(UNIT(s), rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
return 0;
}
r = socket_address_parse_netlink(&p->address, k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse address value in '%s', ignoring: %m", k);
return 0;
}
p->type = SOCKET_SOCKET;
} else {
_cleanup_free_ char *k = NULL;
r = unit_path_printf(UNIT(s), rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
return 0;
}
if (path_is_absolute(k)) { /* Only for AF_UNIX file system sockets… */
r = patch_var_run(unit, filename, line, lvalue, &k);
if (r < 0)
return r;
}
r = socket_address_parse_and_warn(&p->address, k);
if (r < 0) {
if (r != -EAFNOSUPPORT)
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse address value in '%s', ignoring: %m", k);
return 0;
}
if (streq(lvalue, "ListenStream"))
p->address.type = SOCK_STREAM;
else if (streq(lvalue, "ListenDatagram"))
p->address.type = SOCK_DGRAM;
else {
assert(streq(lvalue, "ListenSequentialPacket"));
p->address.type = SOCK_SEQPACKET;
}
if (socket_address_family(&p->address) != AF_UNIX && p->address.type == SOCK_SEQPACKET) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Address family not supported, ignoring: %s", rvalue);
return 0;
}
p->type = SOCKET_SOCKET;
}
LIST_APPEND(port, s->ports, TAKE_PTR(p));
return 0;
}
int config_parse_exec_nice(
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) {
ExecContext *c = ASSERT_PTR(data);
int priority, r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
c->nice_set = false;
return 0;
}
r = parse_nice(rvalue, &priority);
if (r < 0) {
if (r == -ERANGE)
log_syntax(unit, LOG_WARNING, filename, line, r, "Nice priority out of range, ignoring: %s", rvalue);
else
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse nice priority '%s', ignoring: %m", rvalue);
return 0;
}
c->nice = priority;
c->nice_set = true;
return 0;
}
int config_parse_exec_oom_score_adjust(
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) {
ExecContext *c = ASSERT_PTR(data);
int oa, r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
c->oom_score_adjust_set = false;
return 0;
}
r = parse_oom_score_adjust(rvalue, &oa);
if (r < 0) {
if (r == -ERANGE)
log_syntax(unit, LOG_WARNING, filename, line, r, "OOM score adjust value out of range, ignoring: %s", rvalue);
else
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse the OOM score adjust value '%s', ignoring: %m", rvalue);
return 0;
}
c->oom_score_adjust = oa;
c->oom_score_adjust_set = true;
return 0;
}
int config_parse_exec_coredump_filter(
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) {
ExecContext *c = ASSERT_PTR(data);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
c->coredump_filter = 0;
c->coredump_filter_set = false;
return 0;
}
uint64_t f;
r = coredump_filter_mask_from_string(rvalue, &f);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to parse the CoredumpFilter=%s, ignoring: %m", rvalue);
return 0;
}
c->coredump_filter |= f;
c->coredump_filter_set = true;
return 0;
}
int config_parse_kill_mode(
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) {
KillMode *k = data, m;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
*k = KILL_CONTROL_GROUP;
return 0;
}
m = kill_mode_from_string(rvalue);
if (m < 0) {
log_syntax(unit, LOG_WARNING, filename, line, m,
"Failed to parse kill mode specification, ignoring: %s", rvalue);
return 0;
}
if (m == KILL_NONE)
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Unit uses KillMode=none. "
"This is unsafe, as it disables systemd's process lifecycle management for the service. "
"Please update the service to use a safer KillMode=, such as 'mixed' or 'control-group'. "
"Support for KillMode=none is deprecated and will eventually be removed.");
*k = m;
return 0;
}
int config_parse_exec(
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) {
ExecCommand **e = ASSERT_PTR(data);
const Unit *u = ASSERT_PTR(userdata);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
e += ltype;
if (isempty(rvalue)) {
/* An empty assignment resets the list */
*e = exec_command_free_list(*e);
return 0;
}
const char *p = rvalue;
bool semicolon;
do {
_cleanup_free_ char *firstword = NULL;
semicolon = false;
r = extract_first_word_and_warn(&p, &firstword, NULL, EXTRACT_UNQUOTE|EXTRACT_CUNESCAPE, unit, filename, line, rvalue);
if (r <= 0)
return 0;
/* A lone ";" is a separator. Let's make sure we don't treat it as an executable name.
*
* SOFT DEPRECATION: We support multiple command lines in one ExecStart= line for
* compatibility with older versions, but we no longer document this exists, it's deprecated
* in a soft way. New unit files, should not use this feature. */
if (streq(firstword, ";")) {
semicolon = true;
continue;
}
const char *f = firstword;
bool ignore, separate_argv0 = false, ambient_hack = false;
ExecCommandFlags flags = 0;
for (;; f++) {
/* We accept an absolute path as first argument. Valid prefixes and their effect:
*
* "-": Ignore if the path doesn't exist
* "@": Allow overriding argv[0] (supplied as a separate argument)
* "|": Prefix the cmdline with target user's shell (when combined with "@" invoke
* login shell semantics)
* ":": Disable environment variable substitution
* "+": Run with full privileges and no sandboxing
* "!": Apply sandboxing except for user/group credentials
*/
if (*f == '-' && !FLAGS_SET(flags, EXEC_COMMAND_IGNORE_FAILURE))
flags |= EXEC_COMMAND_IGNORE_FAILURE;
else if (*f == '@' && !separate_argv0)
separate_argv0 = true;
else if (*f == ':' && !FLAGS_SET(flags, EXEC_COMMAND_NO_ENV_EXPAND))
flags |= EXEC_COMMAND_NO_ENV_EXPAND;
else if (*f == '|' && !FLAGS_SET(flags, EXEC_COMMAND_VIA_SHELL))
flags |= EXEC_COMMAND_VIA_SHELL;
else if (*f == '+' && !(flags & (EXEC_COMMAND_FULLY_PRIVILEGED|EXEC_COMMAND_NO_SETUID)) && !ambient_hack)
flags |= EXEC_COMMAND_FULLY_PRIVILEGED;
else if (*f == '!' && !(flags & (EXEC_COMMAND_FULLY_PRIVILEGED|EXEC_COMMAND_NO_SETUID)) && !ambient_hack)
flags |= EXEC_COMMAND_NO_SETUID;
else if (*f == '!' && !FLAGS_SET(flags, EXEC_COMMAND_FULLY_PRIVILEGED) && !ambient_hack) {
/* Compatibility with the old !! ambient caps hack (removed in v258). Since
* we don't support that anymore and !! was a noop on non-supporting systems,
* we'll just turn off the EXEC_COMMAND_NO_SETUID flag again and be done with
* it. */
flags &= ~EXEC_COMMAND_NO_SETUID;
ambient_hack = true;
log_syntax(unit, LOG_NOTICE, filename, line, 0,
"The !! modifier for %s= lines is no longer supported and is now ignored. "
"Please update your unit files and remove the modifier.", lvalue);
} else
break;
}
ignore = FLAGS_SET(flags, EXEC_COMMAND_IGNORE_FAILURE);
_cleanup_strv_free_ char **args = NULL;
_cleanup_free_ char *path = NULL;
if (FLAGS_SET(flags, EXEC_COMMAND_VIA_SHELL)) {
/* Use _PATH_BSHELL as placeholder since we can't do NSS lookups in pid1. This would
* be exported to various dbus properties and is used to determine SELinux label -
* which isn't accurate, but is a best-effort thing to assume all shells have more
* or less the same label. */
path = strdup(_PATH_BSHELL);
if (!path)
return log_oom();
if (strv_extend_many(&args, separate_argv0 ? "-sh" : "sh", empty_to_null(f)) < 0)
return log_oom();
} else {
r = unit_path_printf(u, f, &path);
if (r < 0) {
log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, r,
"Failed to resolve unit specifiers in '%s'%s: %m",
f, ignore ? ", ignoring" : "");
return ignore ? 0 : -ENOEXEC;
}
if (isempty(path)) {
log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, 0,
"Empty path in command line%s: %s",
ignore ? ", ignoring" : "", rvalue);
return ignore ? 0 : -ENOEXEC;
}
if (!string_is_safe(path)) {
log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, 0,
"Executable path contains special characters%s: %s",
ignore ? ", ignoring" : "", path);
return ignore ? 0 : -ENOEXEC;
}
if (path_implies_directory(path)) {
log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, 0,
"Executable path specifies a directory%s: %s",
ignore ? ", ignoring" : "", path);
return ignore ? 0 : -ENOEXEC;
}
if (!filename_or_absolute_path_is_valid(path)) {
log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, 0,
"Neither a valid executable name nor an absolute path%s: %s",
ignore ? ", ignoring" : "", path);
return ignore ? 0 : -ENOEXEC;
}
if (!separate_argv0)
if (strv_extend(&args, path) < 0)
return log_oom();
}
while (!isempty(p)) {
_cleanup_free_ char *word = NULL, *resolved = NULL;
/* Check explicitly for an unquoted semicolon as command separator token. */
if (p[0] == ';' && (!p[1] || strchr(WHITESPACE, p[1]))) {
p++;
p = skip_leading_chars(p, /* bad= */ NULL);
semicolon = true;
break;
}
/* Check for \; explicitly, to not confuse it with \\; or "\;" or "\\;" etc.
* extract_first_word() would return the same for all of those. */
if (p[0] == '\\' && p[1] == ';' && (!p[2] || strchr(WHITESPACE, p[2]))) {
p += 2;
p = skip_leading_chars(p, /* bad= */ NULL);
if (strv_extend(&args, ";") < 0)
return log_oom();
continue;
}
r = extract_first_word_and_warn(&p, &word, NULL, EXTRACT_UNQUOTE|EXTRACT_CUNESCAPE, unit, filename, line, rvalue);
if (r < 0)
return ignore ? 0 : -ENOEXEC;
if (r == 0)
break;
r = unit_full_printf(u, word, &resolved);
if (r < 0) {
log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, r,
"Failed to resolve unit specifiers in '%s'%s: %m",
word, ignore ? ", ignoring" : "");
return ignore ? 0 : -ENOEXEC;
}
if (strv_consume(&args, TAKE_PTR(resolved)) < 0)
return log_oom();
}
if (strv_isempty(args)) {
log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, 0,
"Empty executable name or zeroeth argument%s: %s",
ignore ? ", ignoring" : "", rvalue);
return ignore ? 0 : -ENOEXEC;
}
ExecCommand *nec = new(ExecCommand, 1);
if (!nec)
return log_oom();
*nec = (ExecCommand) {
.path = path_simplify(TAKE_PTR(path)),
.argv = TAKE_PTR(args),
.flags = flags,
};
exec_command_append_list(e, nec);
rvalue = p;
} while (semicolon);
return 0;
}
int config_parse_socket_bindtodevice(
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_free_ char *p = NULL;
Socket *s = ASSERT_PTR(data);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue) || streq(rvalue, "*")) {
s->bind_to_device = mfree(s->bind_to_device);
return 0;
}
r = unit_full_printf(UNIT(s), rvalue, &p);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
return 0;
}
if (!ifname_valid(p)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid interface name, ignoring: %s", p);
return 0;
}
return free_and_replace(s->bind_to_device, p);
}
int config_parse_exec_input(
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) {
ExecContext *c = ASSERT_PTR(data);
const Unit *u = userdata;
const char *n;
ExecInput ei;
int r;
assert(filename);
assert(line);
assert(rvalue);
n = startswith(rvalue, "fd:");
if (n) {
_cleanup_free_ char *resolved = NULL;
r = unit_fd_printf(u, n, &resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", n);
return 0;
}
if (isempty(resolved))
resolved = mfree(resolved);
else if (!fdname_is_valid(resolved)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid file descriptor name, ignoring: %s", resolved);
return 0;
}
free_and_replace(c->stdio_fdname[STDIN_FILENO], resolved);
ei = EXEC_INPUT_NAMED_FD;
} else if ((n = startswith(rvalue, "file:"))) {
_cleanup_free_ char *resolved = NULL;
r = unit_path_printf(u, n, &resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", n);
return 0;
}
r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE | PATH_CHECK_FATAL, unit, filename, line, lvalue);
if (r < 0)
return 0;
free_and_replace(c->stdio_file[STDIN_FILENO], resolved);
ei = EXEC_INPUT_FILE;
} else {
ei = exec_input_from_string(rvalue);
if (ei < 0) {
log_syntax(unit, LOG_WARNING, filename, line, ei, "Failed to parse input specifier, ignoring: %s", rvalue);
return 0;
}
}
c->std_input = ei;
return 0;
}
int config_parse_exec_input_text(
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_free_ char *unescaped = NULL, *resolved = NULL;
ExecContext *c = ASSERT_PTR(data);
const Unit *u = userdata;
int r;
assert(filename);
assert(line);
assert(rvalue);
if (isempty(rvalue)) {
/* Reset if the empty string is assigned */
c->stdin_data = mfree(c->stdin_data);
c->stdin_data_size = 0;
return 0;
}
ssize_t l = cunescape(rvalue, 0, &unescaped);
if (l < 0) {
log_syntax(unit, LOG_WARNING, filename, line, l,
"Failed to decode C escaped text '%s', ignoring: %m", rvalue);
return 0;
}
r = unit_full_printf_full(u, unescaped, EXEC_STDIN_DATA_MAX, &resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve unit specifiers in '%s', ignoring: %m", unescaped);
return 0;
}
size_t sz = strlen(resolved);
if (c->stdin_data_size + sz + 1 < c->stdin_data_size || /* check for overflow */
c->stdin_data_size + sz + 1 > EXEC_STDIN_DATA_MAX) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Standard input data too large (%zu), maximum of %zu permitted, ignoring.",
c->stdin_data_size + sz, (size_t) EXEC_STDIN_DATA_MAX);
return 0;
}
void *p = realloc(c->stdin_data, c->stdin_data_size + sz + 1);
if (!p)
return log_oom();
*((char*) mempcpy((char*) p + c->stdin_data_size, resolved, sz)) = '\n';
c->stdin_data = p;
c->stdin_data_size += sz + 1;
return 0;
}
int config_parse_exec_input_data(
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_free_ void *p = NULL;
ExecContext *c = ASSERT_PTR(data);
size_t sz;
void *q;
int r;
assert(filename);
assert(line);
assert(rvalue);
if (isempty(rvalue)) {
/* Reset if the empty string is assigned */
c->stdin_data = mfree(c->stdin_data);
c->stdin_data_size = 0;
return 0;
}
r = unbase64mem(rvalue, &p, &sz);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to decode base64 data, ignoring: %s", rvalue);
return 0;
}
assert(sz > 0);
if (c->stdin_data_size + sz < c->stdin_data_size || /* check for overflow */
c->stdin_data_size + sz > EXEC_STDIN_DATA_MAX) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Standard input data too large (%zu), maximum of %zu permitted, ignoring.",
c->stdin_data_size + sz, (size_t) EXEC_STDIN_DATA_MAX);
return 0;
}
q = realloc(c->stdin_data, c->stdin_data_size + sz);
if (!q)
return log_oom();
memcpy((uint8_t*) q + c->stdin_data_size, p, sz);
c->stdin_data = q;
c->stdin_data_size += sz;
return 0;
}
int config_parse_exec_output(
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_free_ char *resolved = NULL;
const char *n;
ExecContext *c = ASSERT_PTR(data);
const Unit *u = userdata;
bool obsolete = false;
ExecOutput eo;
int r;
assert(filename);
assert(line);
assert(lvalue);
assert(rvalue);
n = startswith(rvalue, "fd:");
if (n) {
r = unit_fd_printf(u, n, &resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s: %m", n);
return 0;
}
if (isempty(resolved))
resolved = mfree(resolved);
else if (!fdname_is_valid(resolved)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid file descriptor name, ignoring: %s", resolved);
return 0;
}
eo = EXEC_OUTPUT_NAMED_FD;
} else if (streq(rvalue, "syslog")) {
eo = EXEC_OUTPUT_JOURNAL;
obsolete = true;
} else if (streq(rvalue, "syslog+console")) {
eo = EXEC_OUTPUT_JOURNAL_AND_CONSOLE;
obsolete = true;
} else if ((n = startswith(rvalue, "file:"))) {
r = unit_path_printf(u, n, &resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", n);
return 0;
}
r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE | PATH_CHECK_FATAL, unit, filename, line, lvalue);
if (r < 0)
return 0;
eo = EXEC_OUTPUT_FILE;
} else if ((n = startswith(rvalue, "append:"))) {
r = unit_path_printf(u, n, &resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", n);
return 0;
}
r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE | PATH_CHECK_FATAL, unit, filename, line, lvalue);
if (r < 0)
return 0;
eo = EXEC_OUTPUT_FILE_APPEND;
} else if ((n = startswith(rvalue, "truncate:"))) {
r = unit_path_printf(u, n, &resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", n);
return 0;
}
r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE | PATH_CHECK_FATAL, unit, filename, line, lvalue);
if (r < 0)
return 0;
eo = EXEC_OUTPUT_FILE_TRUNCATE;
} else {
eo = exec_output_from_string(rvalue);
if (eo < 0) {
log_syntax(unit, LOG_WARNING, filename, line, eo, "Failed to parse output specifier, ignoring: %s", rvalue);
return 0;
}
}
if (obsolete)
log_syntax(unit, LOG_NOTICE, filename, line, 0,
"Standard output type %s is obsolete, automatically updating to %s. Please update your unit file, and consider removing the setting altogether.",
rvalue, exec_output_to_string(eo));
if (streq(lvalue, "StandardOutput")) {
if (eo == EXEC_OUTPUT_NAMED_FD)
free_and_replace(c->stdio_fdname[STDOUT_FILENO], resolved);
else
free_and_replace(c->stdio_file[STDOUT_FILENO], resolved);
c->std_output = eo;
} else {
assert(streq(lvalue, "StandardError"));
if (eo == EXEC_OUTPUT_NAMED_FD)
free_and_replace(c->stdio_fdname[STDERR_FILENO], resolved);
else
free_and_replace(c->stdio_file[STDERR_FILENO], resolved);
c->std_error = eo;
}
return 0;
}
int config_parse_exec_io_class(
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) {
ExecContext *c = ASSERT_PTR(data);
int x;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
c->ioprio_is_set = false;
c->ioprio = IOPRIO_DEFAULT_CLASS_AND_PRIO;
return 0;
}
x = ioprio_class_from_string(rvalue);
if (x < 0) {
log_syntax(unit, LOG_WARNING, filename, line, x, "Failed to parse IO scheduling class, ignoring: %s", rvalue);
return 0;
}
c->ioprio = ioprio_normalize(ioprio_prio_value(x, ioprio_prio_data(c->ioprio)));
c->ioprio_is_set = true;
return 0;
}
int config_parse_exec_io_priority(
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) {
ExecContext *c = ASSERT_PTR(data);
int i, r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
c->ioprio_is_set = false;
c->ioprio = IOPRIO_DEFAULT_CLASS_AND_PRIO;
return 0;
}
r = ioprio_parse_priority(rvalue, &i);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse IO priority, ignoring: %s", rvalue);
return 0;
}
c->ioprio = ioprio_normalize(ioprio_prio_value(ioprio_prio_class(c->ioprio), i));
c->ioprio_is_set = true;
return 0;
}
int config_parse_exec_cpu_sched_policy(
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) {
ExecContext *c = ASSERT_PTR(data);
int x;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
c->cpu_sched_set = false;
c->cpu_sched_policy = SCHED_OTHER;
c->cpu_sched_priority = 0;
return 0;
}
x = sched_policy_from_string(rvalue);
if (x < 0) {
log_syntax(unit, LOG_WARNING, filename, line, x, "Failed to parse CPU scheduling policy, ignoring: %s", rvalue);
return 0;
}
if (!sched_policy_supported(x))
log_syntax(unit, LOG_WARNING, filename, line, x, "Unsupported CPU scheduling policy: %s", rvalue);
c->cpu_sched_policy = x;
/* Moving to or from real-time policy? We need to adjust the priority */
c->cpu_sched_priority = CLAMP(c->cpu_sched_priority, sched_get_priority_min_safe(x), sched_get_priority_max_safe(x));
c->cpu_sched_set = true;
return 0;
}
int config_parse_numa_mask(
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) {
CPUSet *cpu_set = ASSERT_PTR(data);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (streq(rvalue, "all")) {
_cleanup_(cpu_set_done) CPUSet c = {};
r = numa_mask_add_all(&c);
if (r < 0)
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to create NUMA mask representing \"all\" NUMA nodes, ignoring: %m");
cpu_set_done(cpu_set);
*cpu_set = TAKE_STRUCT(c);
return 0;
}
/* When parsing system.conf or user.conf, rather than unit files, userdata is NULL. */
return userdata ?
config_parse_unit_cpu_set(unit, filename, line, section, section_line, lvalue, ltype, rvalue, data, userdata) :
config_parse_cpu_set(unit, filename, line, section, section_line, lvalue, ltype, rvalue, data, userdata);
}
int config_parse_exec_cpu_sched_prio(
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) {
ExecContext *c = ASSERT_PTR(data);
int i, r;
assert(filename);
assert(lvalue);
assert(rvalue);
r = safe_atoi(rvalue, &i);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse CPU scheduling priority, ignoring: %s", rvalue);
return 0;
}
/* On Linux RR/FIFO range from 1 to 99 and OTHER/BATCH may only be 0. Policy might be set later so
* we do not check the precise range, but only the generic outer bounds. */
if (i < 0 || i > 99) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "CPU scheduling priority is out of range, ignoring: %s", rvalue);
return 0;
}
c->cpu_sched_priority = i;
c->cpu_sched_set = true;
return 0;
}
int config_parse_root_image_options(
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_(mount_options_free_allp) MountOptions *options = NULL;
_cleanup_strv_free_ char **l = NULL;
ExecContext *c = ASSERT_PTR(data);
const Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
c->root_image_options = mount_options_free_all(c->root_image_options);
return 0;
}
r = strv_split_colon_pairs(&l, rvalue);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s, ignoring: %s", lvalue, rvalue);
return 0;
}
STRV_FOREACH_PAIR(first, second, l) {
MountOptions *o = NULL;
_cleanup_free_ char *mount_options_resolved = NULL;
const char *mount_options = NULL, *partition = "root";
PartitionDesignator partition_designator;
/* Format is either 'root:foo' or 'foo' (root is implied) */
if (!isempty(*second)) {
partition = *first;
mount_options = *second;
} else
mount_options = *first;
partition_designator = partition_designator_from_string(partition);
if (partition_designator < 0) {
log_syntax(unit, LOG_WARNING, filename, line, partition_designator,
"Invalid partition name %s, ignoring", partition);
continue;
}
r = unit_full_printf(u, mount_options, &mount_options_resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", mount_options);
continue;
}
o = new(MountOptions, 1);
if (!o)
return log_oom();
*o = (MountOptions) {
.partition_designator = partition_designator,
.options = TAKE_PTR(mount_options_resolved),
};
LIST_APPEND(mount_options, options, TAKE_PTR(o));
}
if (options)
LIST_JOIN(mount_options, c->root_image_options, options);
else
/* empty spaces/separators only */
c->root_image_options = mount_options_free_all(c->root_image_options);
return 0;
}
int config_parse_exec_root_hash(
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) {
ExecContext *c = ASSERT_PTR(data);
int r;
assert(filename);
assert(line);
assert(rvalue);
if (isempty(rvalue)) {
/* Reset if the empty string is assigned */
c->root_hash_path = mfree(c->root_hash_path);
iovec_done(&c->root_hash);
return 0;
}
if (path_is_absolute(rvalue)) {
/* We have the path to a roothash to load and decode, eg: RootHash=/foo/bar.roothash */
_cleanup_free_ char *p = NULL;
p = strdup(rvalue);
if (!p)
return -ENOMEM;
free_and_replace(c->root_hash_path, p);
iovec_done(&c->root_hash);
return 0;
}
/* We have a roothash to decode, eg: RootHash=012345789abcdef */
_cleanup_(iovec_done) struct iovec roothash_decoded = {};
r = unhexmem(rvalue, &roothash_decoded.iov_base, &roothash_decoded.iov_len);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to decode RootHash=, ignoring: %s", rvalue);
return 0;
}
if (roothash_decoded.iov_len < sizeof(sd_id128_t)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "RootHash= is too short, ignoring: %s", rvalue);
return 0;
}
iovec_done(&c->root_hash);
c->root_hash = TAKE_STRUCT(roothash_decoded);
c->root_hash_path = mfree(c->root_hash_path);
return 0;
}
int config_parse_exec_root_hash_sig(
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) {
ExecContext *c = ASSERT_PTR(data);
int r;
assert(filename);
assert(line);
assert(rvalue);
if (isempty(rvalue)) {
/* Reset if the empty string is assigned */
c->root_hash_sig_path = mfree(c->root_hash_sig_path);
iovec_done(&c->root_hash_sig);
return 0;
}
if (path_is_absolute(rvalue)) {
/* We have the path to a roothash signature to load and decode, eg: RootHashSignature=/foo/bar.roothash.p7s */
_cleanup_free_ char *p = NULL;
p = strdup(rvalue);
if (!p)
return log_oom();
free_and_replace(c->root_hash_sig_path, p);
iovec_done(&c->root_hash_sig);
return 0;
}
const char *value = startswith(rvalue, "base64:");
if (!value) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Failed to decode RootHashSignature=, not a path but doesn't start with 'base64:', ignoring: %s", rvalue);
return 0;
}
/* We have a roothash signature to decode, eg: RootHashSignature=base64:012345789abcdef */
_cleanup_(iovec_done) struct iovec roothash_sig_decoded = {};
r = unbase64mem(value, &roothash_sig_decoded.iov_base, &roothash_sig_decoded.iov_len);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to decode RootHashSignature=, ignoring: %s", rvalue);
return 0;
}
iovec_done(&c->root_hash_sig);
c->root_hash_sig = TAKE_STRUCT(roothash_sig_decoded);
c->root_hash_sig_path = mfree(c->root_hash_sig_path);
return 0;
}
int config_parse_exec_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) {
ExecContext *c = ASSERT_PTR(data);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (streq(rvalue, "numa")) {
c->cpu_affinity_from_numa = true;
cpu_set_done(&c->cpu_set);
return 0;
}
r = config_parse_unit_cpu_set(unit, filename, line, section, section_line, lvalue, ltype, rvalue, &c->cpu_set, userdata);
if (r > 0)
c->cpu_affinity_from_numa = false;
return 0;
}
int config_parse_capability_set(
const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
uint64_t *capability_set = ASSERT_PTR(data);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
uint64_t initial = streq(lvalue, "CapabilityBoundingSet") ? CAP_MASK_ALL : 0;
r = parse_capability_set(rvalue, initial, capability_set);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s= specifier '%s', ignoring: %m", lvalue, rvalue);
return 0;
}
if (*capability_set == CAP_MASK_UNSET)
*capability_set = 0;
return 0;
}
int config_parse_exec_selinux_context(
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) {
ExecContext *c = ASSERT_PTR(data);
const Unit *u = userdata;
bool ignore;
char *k;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
c->selinux_context = mfree(c->selinux_context);
c->selinux_context_ignore = false;
return 0;
}
if (rvalue[0] == '-') {
ignore = true;
rvalue++;
} else
ignore = false;
r = unit_full_printf(u, rvalue, &k);
if (r < 0) {
log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, r,
"Failed to resolve unit specifiers in '%s'%s: %m",
rvalue, ignore ? ", ignoring" : "");
return ignore ? 0 : -ENOEXEC;
}
free_and_replace(c->selinux_context, k);
c->selinux_context_ignore = ignore;
return 0;
}
int config_parse_exec_apparmor_profile(
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) {
ExecContext *c = ASSERT_PTR(data);
const Unit *u = userdata;
bool ignore;
char *k;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
c->apparmor_profile = mfree(c->apparmor_profile);
c->apparmor_profile_ignore = false;
return 0;
}
if (rvalue[0] == '-') {
ignore = true;
rvalue++;
} else
ignore = false;
r = unit_full_printf(u, rvalue, &k);
if (r < 0) {
log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, r,
"Failed to resolve unit specifiers in '%s'%s: %m",
rvalue, ignore ? ", ignoring" : "");
return ignore ? 0 : -ENOEXEC;
}
free_and_replace(c->apparmor_profile, k);
c->apparmor_profile_ignore = ignore;
return 0;
}
int config_parse_exec_smack_process_label(
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) {
ExecContext *c = ASSERT_PTR(data);
const Unit *u = userdata;
bool ignore;
char *k;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
c->smack_process_label = mfree(c->smack_process_label);
c->smack_process_label_ignore = false;
return 0;
}
if (rvalue[0] == '-') {
ignore = true;
rvalue++;
} else
ignore = false;
r = unit_full_printf(u, rvalue, &k);
if (r < 0) {
log_syntax(unit, ignore ? LOG_WARNING : LOG_ERR, filename, line, r,
"Failed to resolve unit specifiers in '%s'%s: %m",
rvalue, ignore ? ", ignoring" : "");
return ignore ? 0 : -ENOEXEC;
}
free_and_replace(c->smack_process_label, k);
c->smack_process_label_ignore = ignore;
return 0;
}
int config_parse_timer(
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_(calendar_spec_freep) CalendarSpec *c = NULL;
_cleanup_free_ char *k = NULL;
const Unit *u = userdata;
Timer *t = ASSERT_PTR(data);
usec_t usec = 0;
TimerValue *v;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets list */
timer_free_values(t);
return 0;
}
r = unit_full_printf(u, rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
return 0;
}
if (ltype == TIMER_CALENDAR) {
r = calendar_spec_from_string(k, &c);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse calendar specification, ignoring: %s", k);
return 0;
}
} else {
r = parse_sec(k, &usec);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse timer value, ignoring: %s", k);
return 0;
}
}
v = new(TimerValue, 1);
if (!v)
return log_oom();
*v = (TimerValue) {
.base = ltype,
.value = usec,
.calendar_spec = TAKE_PTR(c),
};
LIST_PREPEND(value, t->values, v);
return 0;
}
int config_parse_trigger_unit(
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_free_ char *p = NULL;
Unit *u = ASSERT_PTR(data);
UnitType type;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (UNIT_TRIGGER(u)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Multiple units to trigger specified, ignoring: %s", rvalue);
return 0;
}
r = unit_name_printf(u, rvalue, &p);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
return 0;
}
type = unit_name_to_type(p);
if (type < 0) {
log_syntax(unit, LOG_WARNING, filename, line, type, "Unit type not valid, ignoring: %s", rvalue);
return 0;
}
if (unit_has_name(u, p)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Units cannot trigger themselves, ignoring: %s", rvalue);
return 0;
}
r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_TRIGGERS, p, true, UNIT_DEPENDENCY_FILE);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to add trigger on %s, ignoring: %m", p);
return 0;
}
return 0;
}
int config_parse_path_spec(
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) {
Path *p = ASSERT_PTR(data);
PathSpec *s;
PathType b;
_cleanup_free_ char *k = NULL;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment clears list */
path_free_specs(p);
return 0;
}
b = path_type_from_string(lvalue);
if (b < 0) {
log_syntax(unit, LOG_WARNING, filename, line, b, "Failed to parse path type, ignoring: %s", lvalue);
return 0;
}
r = unit_path_printf(UNIT(p), rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
return 0;
}
r = path_simplify_and_warn(k, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
if (r < 0)
return 0;
s = new0(PathSpec, 1);
if (!s)
return log_oom();
s->unit = UNIT(p);
s->path = TAKE_PTR(k);
s->type = b;
s->inotify_fd = -EBADF;
LIST_PREPEND(spec, p->specs, s);
return 0;
}
int config_parse_socket_service(
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_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_free_ char *p = NULL;
Socket *s = ASSERT_PTR(data);
Unit *x;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
r = unit_name_printf(UNIT(s), rvalue, &p);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
return 0;
}
if (!endswith(p, ".service")) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Unit must be of type service, ignoring: %s", rvalue);
return 0;
}
r = manager_load_unit(UNIT(s)->manager, p, NULL, &error, &x);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to load unit %s, ignoring: %s", rvalue, bus_error_message(&error, r));
return 0;
}
unit_ref_set(&s->service, UNIT(s), x);
return 0;
}
int config_parse_fdname(
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_free_ char *p = NULL;
Socket *s = ASSERT_PTR(data);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
s->fdname = mfree(s->fdname);
return 0;
}
r = unit_fd_printf(UNIT(s), rvalue, &p);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
return 0;
}
if (!fdname_is_valid(p)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid file descriptor name, ignoring: %s", p);
return 0;
}
return free_and_replace(s->fdname, p);
}
int config_parse_service_sockets(
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) {
Service *s = ASSERT_PTR(data);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL, *k = NULL;
r = extract_first_word(&p, &word, NULL, 0);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Trailing garbage in sockets, ignoring: %s", rvalue);
return 0;
}
if (r == 0)
return 0;
r = unit_name_printf(UNIT(s), word, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", word);
continue;
}
if (!endswith(k, ".socket")) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Unit must be of type socket, ignoring: %s", k);
continue;
}
r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_WANTS, UNIT_AFTER, k, true, UNIT_DEPENDENCY_FILE);
if (r < 0)
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to add dependency on %s, ignoring: %m", k);
r = unit_add_dependency_by_name(UNIT(s), UNIT_TRIGGERED_BY, k, true, UNIT_DEPENDENCY_FILE);
if (r < 0)
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to add dependency on %s, ignoring: %m", k);
}
}
int config_parse_bus_name(
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_free_ char *k = NULL;
const Unit *u = ASSERT_PTR(userdata);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
r = unit_full_printf_full(u, rvalue, SD_BUS_MAXIMUM_NAME_LENGTH, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
return 0;
}
if (!sd_bus_service_name_is_valid(k)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid bus name, ignoring: %s", k);
return 0;
}
return config_parse_string(unit, filename, line, section, section_line, lvalue, ltype, k, data, userdata);
}
int config_parse_service_timeout(
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) {
Service *s = ASSERT_PTR(userdata);
usec_t usec;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
/* This is called for two cases: TimeoutSec= and TimeoutStartSec=. */
/* Traditionally, these options accepted 0 to disable the timeouts. However, a timeout of 0 suggests it happens
* immediately, hence fix this to become USEC_INFINITY instead. This is in-line with how we internally handle
* all other timeouts. */
r = parse_sec_fix_0(rvalue, &usec);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s= parameter, ignoring: %s", lvalue, rvalue);
return 0;
}
s->start_timeout_defined = true;
s->timeout_start_usec = usec;
if (streq(lvalue, "TimeoutSec"))
s->timeout_stop_usec = usec;
return 0;
}
int config_parse_timeout_abort(
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) {
usec_t *ret = ASSERT_PTR(data);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
/* Note: apart from setting the arg, this returns an extra bit of information in the return value. */
if (isempty(rvalue)) {
*ret = 0;
return 0; /* "not set" */
}
r = parse_sec(rvalue, ret);
if (r < 0)
return log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s= setting, ignoring: %s", lvalue, rvalue);
return 1; /* "set" */
}
int config_parse_service_timeout_abort(
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) {
Service *s = ASSERT_PTR(userdata);
int r;
r = config_parse_timeout_abort(unit, filename, line, section, section_line, lvalue, ltype, rvalue,
&s->timeout_abort_usec, s);
if (r >= 0)
s->timeout_abort_set = r;
return 0;
}
int config_parse_user_group_compat(
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_free_ char *k = NULL;
char **user = data;
const Unit *u = ASSERT_PTR(userdata);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
*user = mfree(*user);
return 0;
}
r = unit_full_printf(u, rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s: %m", rvalue);
return -ENOEXEC;
}
if (!valid_user_group_name(k, VALID_USER_ALLOW_NUMERIC|VALID_USER_RELAX|VALID_USER_WARN)) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid user/group name or numeric ID: %s", k);
return -ENOEXEC;
}
if (strstr(lvalue, "User") && streq(k, NOBODY_USER_NAME))
log_struct(LOG_NOTICE,
LOG_MESSAGE("%s:%u: Special user %s configured, this is not safe!", filename, line, k),
LOG_MESSAGE_ID(SD_MESSAGE_NOBODY_USER_UNSUITABLE_STR),
LOG_ITEM("UNIT=%s", unit),
LOG_ITEM("OFFENDING_USER=%s", k),
LOG_ITEM("CONFIG_FILE=%s", filename),
LOG_ITEM("CONFIG_LINE=%u", line));
return free_and_replace(*user, k);
}
int config_parse_user_group_strv_compat(
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) {
char ***users = data;
const Unit *u = ASSERT_PTR(userdata);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
*users = strv_free(*users);
return 0;
}
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL, *k = NULL;
r = extract_first_word(&p, &word, NULL, 0);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Invalid syntax: %s", rvalue);
return -ENOEXEC;
}
if (r == 0)
return 0;
r = unit_full_printf(u, word, &k);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s: %m", word);
return -ENOEXEC;
}
if (!valid_user_group_name(k, VALID_USER_ALLOW_NUMERIC|VALID_USER_RELAX|VALID_USER_WARN)) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid user/group name or numeric ID: %s", k);
return -ENOEXEC;
}
r = strv_push(users, k);
if (r < 0)
return log_oom();
k = NULL;
}
}
int config_parse_working_directory(
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) {
ExecContext *c = ASSERT_PTR(data);
const Unit *u = ASSERT_PTR(userdata);
bool missing_ok;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
c->working_directory_missing_ok = false;
c->working_directory_home = false;
c->working_directory = mfree(c->working_directory);
return 0;
}
if (rvalue[0] == '-') {
missing_ok = true;
rvalue++;
} else
missing_ok = false;
if (streq(rvalue, "~")) {
c->working_directory_home = true;
c->working_directory = mfree(c->working_directory);
} else {
_cleanup_free_ char *k = NULL;
r = unit_path_printf(u, rvalue, &k);
if (r < 0) {
log_syntax(unit, missing_ok ? LOG_WARNING : LOG_ERR, filename, line, r,
"Failed to resolve unit specifiers in working directory path '%s'%s: %m",
rvalue, missing_ok ? ", ignoring" : "");
return missing_ok ? 0 : -ENOEXEC;
}
r = path_simplify_and_warn(k, PATH_CHECK_ABSOLUTE|(missing_ok ? 0 : PATH_CHECK_FATAL),
unit, filename, line, lvalue);
if (r < 0)
return missing_ok ? 0 : -ENOEXEC;
c->working_directory_home = false;
free_and_replace(c->working_directory, k);
}
c->working_directory_missing_ok = missing_ok;
return 0;
}
int config_parse_unit_env_file(
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) {
char ***env = ASSERT_PTR(data);
const Unit *u = userdata;
_cleanup_free_ char *n = NULL;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment frees the list */
*env = strv_free(*env);
return 0;
}
r = unit_path_printf(u, rvalue, &n);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
return 0;
}
r = path_simplify_and_warn(n[0] == '-' ? n + 1 : n, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
if (r < 0)
return 0;
r = strv_push(env, n);
if (r < 0)
return log_oom();
n = NULL;
return 0;
}
int config_parse_environ(
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) {
const Unit *u = userdata;
char ***env = ASSERT_PTR(data);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
*env = strv_free(*env);
return 0;
}
/* If 'u' is set, we operate on the regular unit specifier table. Otherwise we use a manager-specific
* specifier table (in which case ltype must contain the runtime scope). */
const Specifier *table = u ? NULL : (const Specifier[]) {
COMMON_SYSTEM_SPECIFIERS,
COMMON_TMP_SPECIFIERS,
COMMON_CREDS_SPECIFIERS(ltype),
{ 'h', specifier_user_home, NULL },
{ 's', specifier_user_shell, NULL },
{}
};
for (const char *p = rvalue;; ) {
_cleanup_free_ char *word = NULL, *resolved = NULL;
r = extract_first_word(&p, &word, NULL, EXTRACT_CUNESCAPE|EXTRACT_UNQUOTE);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Invalid syntax, ignoring: %s", rvalue);
return 0;
}
if (r == 0)
return 0;
if (table)
r = specifier_printf(word, sc_arg_max(), table, NULL, NULL, &resolved);
else
r = unit_env_printf(u, word, &resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve specifiers in %s, ignoring: %m", word);
continue;
}
if (!env_assignment_is_valid(resolved)) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Invalid environment assignment, ignoring: %s", resolved);
continue;
}
r = strv_env_replace_consume(env, TAKE_PTR(resolved));
if (r < 0)
return log_error_errno(r, "Failed to update environment: %m");
}
}
int config_parse_pass_environ(
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) {
char ***passenv = ASSERT_PTR(data);
const Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
*passenv = strv_free(*passenv);
return 0;
}
_cleanup_strv_free_ char **n = NULL;
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL, *k = NULL;
r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Trailing garbage in %s, ignoring: %s", lvalue, rvalue);
break;
}
if (r == 0)
break;
if (u) {
r = unit_env_printf(u, word, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve specifiers in %s, ignoring: %m", word);
continue;
}
} else
k = TAKE_PTR(word);
if (!env_name_is_valid(k)) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Invalid environment name for %s, ignoring: %s", lvalue, k);
continue;
}
if (strv_consume(&n, TAKE_PTR(k)) < 0)
return log_oom();
}
r = strv_extend_strv_consume(passenv, TAKE_PTR(n), /* filter_duplicates= */ true);
if (r < 0)
return log_oom();
return 0;
}
int config_parse_unset_environ(
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) {
char ***unsetenv = ASSERT_PTR(data);
const Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
*unsetenv = strv_free(*unsetenv);
return 0;
}
_cleanup_strv_free_ char **n = NULL;
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL, *k = NULL;
r = extract_first_word(&p, &word, NULL, EXTRACT_CUNESCAPE|EXTRACT_UNQUOTE);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Trailing garbage in %s, ignoring: %s", lvalue, rvalue);
break;
}
if (r == 0)
break;
if (u) {
r = unit_env_printf(u, word, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve unit specifiers in %s, ignoring: %m", word);
continue;
}
} else
k = TAKE_PTR(word);
if (!env_assignment_is_valid(k) && !env_name_is_valid(k)) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Invalid environment name or assignment %s, ignoring: %s", lvalue, k);
continue;
}
if (strv_consume(&n, TAKE_PTR(k)) < 0)
return log_oom();
}
r = strv_extend_strv_consume(unsetenv, TAKE_PTR(n), /* filter_duplicates= */ true);
if (r < 0)
return log_oom();
return 0;
}
int config_parse_log_extra_fields(
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) {
ExecContext *c = ASSERT_PTR(data);
const Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
exec_context_free_log_extra_fields(c);
return 0;
}
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL, *k = NULL;
const char *eq;
r = extract_first_word(&p, &word, NULL, EXTRACT_CUNESCAPE|EXTRACT_UNQUOTE);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
return 0;
}
if (r == 0)
return 0;
r = unit_full_printf(u, word, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", word);
continue;
}
eq = strchr(k, '=');
if (!eq) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Log field lacks '=' character, ignoring: %s", k);
continue;
}
if (!journal_field_valid(k, eq-k, false)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Log field name is invalid, ignoring: %s", k);
continue;
}
if (!GREEDY_REALLOC(c->log_extra_fields, c->n_log_extra_fields + 1))
return log_oom();
c->log_extra_fields[c->n_log_extra_fields++] = IOVEC_MAKE_STRING(k);
TAKE_PTR(k);
}
}
int config_parse_log_namespace(
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_free_ char *k = NULL;
ExecContext *c = ASSERT_PTR(data);
const Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
c->log_namespace = mfree(c->log_namespace);
return 0;
}
r = unit_full_printf_full(u, rvalue, NAME_MAX, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
return 0;
}
if (!log_namespace_name_valid(k)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Specified log namespace name is not valid, ignoring: %s", k);
return 0;
}
free_and_replace(c->log_namespace, k);
return 0;
}
int config_parse_unit_condition_path(
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_free_ char *p = NULL;
Condition **list = ASSERT_PTR(data), *c;
ConditionType t = ltype;
bool trigger, negate;
const Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
*list = condition_free_list(*list);
return 0;
}
trigger = rvalue[0] == '|';
if (trigger)
rvalue++;
negate = rvalue[0] == '!';
if (negate)
rvalue++;
r = unit_path_printf(u, rvalue, &p);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
return 0;
}
r = path_simplify_and_warn(p, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
if (r < 0)
return 0;
c = condition_new(t, p, trigger, negate);
if (!c)
return log_oom();
LIST_PREPEND(conditions, *list, c);
return 0;
}
int config_parse_unit_condition_string(
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_free_ char *s = NULL;
Condition **list = ASSERT_PTR(data), *c;
ConditionType t = ltype;
bool trigger, negate;
const Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
*list = condition_free_list(*list);
return 0;
}
trigger = *rvalue == '|';
if (trigger)
rvalue += 1 + strspn(rvalue + 1, WHITESPACE);
negate = *rvalue == '!';
if (negate)
rvalue += 1 + strspn(rvalue + 1, WHITESPACE);
r = unit_full_printf(u, rvalue, &s);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
return 0;
}
c = condition_new(t, s, trigger, negate);
if (!c)
return log_oom();
LIST_PREPEND(conditions, *list, c);
return 0;
}
int config_parse_unit_mounts_for(
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) {
Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
assert(STR_IN_SET(lvalue, "RequiresMountsFor", "WantsMountsFor"));
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL, *resolved = NULL;
r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Invalid syntax, ignoring: %s", rvalue);
return 0;
}
if (r == 0)
return 0;
r = unit_path_printf(u, word, &resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", word);
continue;
}
r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
if (r < 0)
continue;
r = unit_add_mounts_for(u, resolved, UNIT_DEPENDENCY_FILE, unit_mount_dependency_type_from_string(lvalue));
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to add requested mount '%s', ignoring: %m", resolved);
continue;
}
}
}
int config_parse_documentation(
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) {
Unit *u = ASSERT_PTR(userdata);
int r;
char **a, **b;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
u->documentation = strv_free(u->documentation);
return 0;
}
r = config_parse_unit_strv_printf(unit, filename, line, section, section_line, lvalue, ltype,
rvalue, data, userdata);
if (r < 0)
return r;
for (a = b = u->documentation; a && *a; a++) {
if (documentation_url_is_valid(*a))
*(b++) = *a;
else {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid URL, ignoring: %s", *a);
free(*a);
}
}
if (b)
*b = NULL;
return 0;
}
#if HAVE_SECCOMP
int config_parse_syscall_filter(
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) {
ExecContext *c = data;
_unused_ const Unit *u = ASSERT_PTR(userdata);
bool invert = false;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
c->syscall_filter = hashmap_free(c->syscall_filter);
c->syscall_allow_list = false;
return 0;
}
if (rvalue[0] == '~') {
invert = true;
rvalue++;
}
if (!c->syscall_filter) {
c->syscall_filter = hashmap_new(NULL);
if (!c->syscall_filter)
return log_oom();
if (invert)
/* Allow everything but the ones listed */
c->syscall_allow_list = false;
else {
/* Allow nothing but the ones listed */
c->syscall_allow_list = true;
/* Accept default syscalls if we are on an allow_list */
r = seccomp_parse_syscall_filter(
"@default", -1, c->syscall_filter,
SECCOMP_PARSE_PERMISSIVE|SECCOMP_PARSE_ALLOW_LIST,
unit,
NULL, 0);
if (r < 0)
return r;
}
}
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL, *name = NULL;
int num;
r = extract_first_word(&p, &word, NULL, 0);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Invalid syntax, ignoring: %s", rvalue);
return 0;
}
if (r == 0)
return 0;
r = parse_syscall_and_errno(word, &name, &num);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to parse syscall:errno, ignoring: %s", word);
continue;
}
if (!invert && num >= 0) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Allow-listed system calls cannot take error number, ignoring: %s", word);
continue;
}
r = seccomp_parse_syscall_filter(
name, num, c->syscall_filter,
SECCOMP_PARSE_LOG|SECCOMP_PARSE_PERMISSIVE|
(invert ? SECCOMP_PARSE_INVERT : 0)|
(c->syscall_allow_list ? SECCOMP_PARSE_ALLOW_LIST : 0),
unit, filename, line);
if (r < 0)
return r;
}
}
int config_parse_syscall_log(
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) {
ExecContext *c = data;
_unused_ const Unit *u = ASSERT_PTR(userdata);
bool invert = false;
const char *p;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
c->syscall_log = hashmap_free(c->syscall_log);
c->syscall_log_allow_list = false;
return 0;
}
if (rvalue[0] == '~') {
invert = true;
rvalue++;
}
if (!c->syscall_log) {
c->syscall_log = hashmap_new(NULL);
if (!c->syscall_log)
return log_oom();
if (invert)
/* Log everything but the ones listed */
c->syscall_log_allow_list = false;
else
/* Log nothing but the ones listed */
c->syscall_log_allow_list = true;
}
p = rvalue;
for (;;) {
_cleanup_free_ char *word = NULL;
r = extract_first_word(&p, &word, NULL, 0);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
return 0;
}
if (r == 0)
return 0;
r = seccomp_parse_syscall_filter(
word, -1, c->syscall_log,
SECCOMP_PARSE_LOG|SECCOMP_PARSE_PERMISSIVE|
(invert ? SECCOMP_PARSE_INVERT : 0)|
(c->syscall_log_allow_list ? SECCOMP_PARSE_ALLOW_LIST : 0),
unit, filename, line);
if (r < 0)
return r;
}
}
int config_parse_syscall_archs(
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) {
Set **archs = data;
int r;
if (isempty(rvalue)) {
*archs = set_free(*archs);
return 0;
}
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL;
uint32_t a;
r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Invalid syntax, ignoring: %s", rvalue);
return 0;
}
if (r == 0)
return 0;
r = seccomp_arch_from_string(word, &a);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to parse system call architecture \"%s\", ignoring: %m", word);
continue;
}
r = set_ensure_put(archs, NULL, UINT32_TO_PTR(a + 1));
if (r < 0)
return log_oom();
}
}
int config_parse_syscall_errno(
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) {
ExecContext *c = data;
int e;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue) || streq(rvalue, "kill")) {
/* Empty assignment resets to KILL */
c->syscall_errno = SECCOMP_ERROR_NUMBER_KILL;
return 0;
}
e = parse_errno(rvalue);
if (e < 0) {
log_syntax(unit, LOG_WARNING, filename, line, e, "Failed to parse error number, ignoring: %s", rvalue);
return 0;
}
if (e == 0) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid error number, ignoring: %s", rvalue);
return 0;
}
c->syscall_errno = e;
return 0;
}
int config_parse_address_families(
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) {
ExecContext *c = data;
bool invert = false;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
c->address_families = set_free(c->address_families);
c->address_families_allow_list = false;
return 0;
}
if (streq(rvalue, "none")) {
/* Forbid all address families. */
c->address_families = set_free(c->address_families);
c->address_families_allow_list = true;
return 0;
}
if (rvalue[0] == '~') {
invert = true;
rvalue++;
}
if (!c->address_families) {
c->address_families = set_new(NULL);
if (!c->address_families)
return log_oom();
c->address_families_allow_list = !invert;
}
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL;
int af;
r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Invalid syntax, ignoring: %s", rvalue);
return 0;
}
if (r == 0)
return 0;
af = af_from_name(word);
if (af < 0) {
log_syntax(unit, LOG_WARNING, filename, line, af,
"Failed to parse address family, ignoring: %s", word);
continue;
}
/* If we previously wanted to forbid an address family and now
* we want to allow it, then just remove it from the list.
*/
if (!invert == c->address_families_allow_list) {
r = set_put(c->address_families, INT_TO_PTR(af));
if (r < 0)
return log_oom();
} else
set_remove(c->address_families, INT_TO_PTR(af));
}
}
#endif
int config_parse_namespace_flags(
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) {
unsigned long *flags = data;
unsigned long all = UPDATE_FLAG(NAMESPACE_FLAGS_ALL, CLONE_NEWUSER, !streq(lvalue, "DelegateNamespaces"));
unsigned long f;
bool invert = false;
int r;
if (isempty(rvalue)) {
/* Reset to the default. */
*flags = NAMESPACE_FLAGS_INITIAL;
return 0;
}
/* Boolean parameter ignores the previous settings */
r = parse_boolean(rvalue);
if (r > 0) {
/* RestrictNamespaces= value gets stored into a field with reverse semantics (the namespaces
* which are retained), so RestrictNamespaces=true means we retain no access to any
* namespaces and vice-versa. */
*flags = streq(lvalue, "RestrictNamespaces") ? 0 : all;
return 0;
} else if (r == 0) {
*flags = streq(lvalue, "RestrictNamespaces") ? all : 0;
return 0;
}
if (rvalue[0] == '~') {
invert = true;
rvalue++;
}
/* Not a boolean argument, in this case it's a list of namespace types. */
r = namespace_flags_from_string(rvalue, &f);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse namespace type string, ignoring: %s", rvalue);
return 0;
}
if (*flags == NAMESPACE_FLAGS_INITIAL)
/* Initial assignment. Just set the value. */
f = invert ? (~f) & all : f;
else
/* Merge the value with the previous one. */
f = UPDATE_FLAG(*flags, f, !invert);
if (FLAGS_SET(f, CLONE_NEWUSER) && streq(lvalue, "DelegateNamespaces")) {
log_syntax(unit, LOG_WARNING, filename, line, r, "The user namespace cannot be delegated with DelegateNamespaces=, ignoring: %s", rvalue);
return 0;
}
*flags = f;
return 0;
}
int config_parse_restrict_filesystems(
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) {
ExecContext *c = ASSERT_PTR(data);
bool invert = false;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
c->restrict_filesystems = set_free(c->restrict_filesystems);
c->restrict_filesystems_allow_list = false;
return 0;
}
if (rvalue[0] == '~') {
invert = true;
rvalue++;
}
if (!c->restrict_filesystems) {
if (invert)
/* Allow everything but the ones listed */
c->restrict_filesystems_allow_list = false;
else
/* Allow nothing but the ones listed */
c->restrict_filesystems_allow_list = true;
}
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL;
r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
if (r == 0)
break;
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Trailing garbage in %s, ignoring: %s", lvalue, rvalue);
break;
}
r = bpf_restrict_fs_parse_filesystem(
word,
&c->restrict_filesystems,
FILESYSTEM_PARSE_LOG|
(invert ? FILESYSTEM_PARSE_INVERT : 0)|
(c->restrict_filesystems_allow_list ? FILESYSTEM_PARSE_ALLOW_LIST : 0),
unit, filename, line);
if (r < 0)
return r;
}
return 0;
}
int config_parse_unit_slice(
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) {
Unit *u = ASSERT_PTR(userdata), *slice;
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_free_ char *k = NULL;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
r = unit_name_printf(u, rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue);
return 0;
}
r = manager_load_unit(u->manager, k, NULL, &error, &slice);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to load slice unit %s, ignoring: %s", k, bus_error_message(&error, r));
return 0;
}
r = unit_set_slice(u, slice);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to assign slice %s to unit %s, ignoring: %m", slice->id, u->id);
return 0;
}
return 0;
}
int config_parse_cpu_quota(
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) {
CGroupContext *c = data;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
c->cpu_quota_per_sec_usec = USEC_INFINITY;
return 0;
}
r = parse_permyriad_unbounded(rvalue);
if (r <= 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid CPU quota '%s', ignoring.", rvalue);
return 0;
}
c->cpu_quota_per_sec_usec = ((usec_t) r * USEC_PER_SEC) / 10000U;
return 0;
}
int config_parse_unit_cpu_set(
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) {
const Unit *u = ASSERT_PTR(userdata);
_cleanup_free_ char *k = NULL;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
r = unit_full_printf(u, rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve unit specifiers in '%s', ignoring: %m",
rvalue);
return 0;
}
return config_parse_cpu_set(unit, filename, line, section, section_line, lvalue, ltype, k, data, userdata);
}
int config_parse_memory_limit(
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) {
CGroupContext *c = data;
uint64_t bytes = CGROUP_LIMIT_MAX;
int r;
if (isempty(rvalue) && STR_IN_SET(lvalue, "DefaultMemoryLow",
"DefaultMemoryMin",
"MemoryLow",
"StartupMemoryLow",
"MemoryMin"))
bytes = CGROUP_LIMIT_MIN;
else if (!isempty(rvalue) && !streq(rvalue, "infinity")) {
r = parse_permyriad(rvalue);
if (r < 0) {
r = parse_size(rvalue, 1024, &bytes);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid memory limit '%s', ignoring: %m", rvalue);
return 0;
}
} else
bytes = physical_memory_scale(r, 10000U);
if (bytes >= UINT64_MAX ||
(bytes <= 0 && !STR_IN_SET(lvalue,
"MemorySwapMax",
"StartupMemorySwapMax",
"MemoryZSwapMax",
"StartupMemoryZSwapMax",
"MemoryLow",
"StartupMemoryLow",
"MemoryMin",
"DefaultMemoryLow",
"DefaultstartupMemoryLow",
"DefaultMemoryMin"))) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Memory limit '%s' out of range, ignoring.", rvalue);
return 0;
}
}
if (streq(lvalue, "DefaultMemoryLow")) {
c->default_memory_low = bytes;
c->default_memory_low_set = true;
} else if (streq(lvalue, "DefaultStartupMemoryLow")) {
c->default_startup_memory_low = bytes;
c->default_startup_memory_low_set = true;
} else if (streq(lvalue, "DefaultMemoryMin")) {
c->default_memory_min = bytes;
c->default_memory_min_set = true;
} else if (streq(lvalue, "MemoryMin")) {
c->memory_min = bytes;
c->memory_min_set = true;
} else if (streq(lvalue, "MemoryLow")) {
c->memory_low = bytes;
c->memory_low_set = true;
} else if (streq(lvalue, "StartupMemoryLow")) {
c->startup_memory_low = bytes;
c->startup_memory_low_set = true;
} else if (streq(lvalue, "MemoryHigh"))
c->memory_high = bytes;
else if (streq(lvalue, "StartupMemoryHigh")) {
c->startup_memory_high = bytes;
c->startup_memory_high_set = true;
} else if (streq(lvalue, "MemoryMax"))
c->memory_max = bytes;
else if (streq(lvalue, "StartupMemoryMax")) {
c->startup_memory_max = bytes;
c->startup_memory_max_set = true;
} else if (streq(lvalue, "MemorySwapMax"))
c->memory_swap_max = bytes;
else if (streq(lvalue, "StartupMemorySwapMax")) {
c->startup_memory_swap_max = bytes;
c->startup_memory_swap_max_set = true;
} else if (streq(lvalue, "MemoryZSwapMax"))
c->memory_zswap_max = bytes;
else if (streq(lvalue, "StartupMemoryZSwapMax")) {
c->startup_memory_zswap_max = bytes;
c->startup_memory_zswap_max_set = true;
} else
return -EINVAL;
return 0;
}
int config_parse_tasks_max(
const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
CGroupTasksMax *tasks_max = ASSERT_PTR(data);
const Unit *u = userdata;
uint64_t v;
int r;
if (isempty(rvalue)) {
*tasks_max = u ? u->manager->defaults.tasks_max : CGROUP_TASKS_MAX_UNSET;
return 0;
}
if (streq(rvalue, "infinity")) {
*tasks_max = CGROUP_TASKS_MAX_UNSET;
return 0;
}
r = parse_permyriad(rvalue);
if (r >= 0)
*tasks_max = (CGroupTasksMax) { r, 10000U }; /* r‱ */
else {
r = safe_atou64(rvalue, &v);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid maximum tasks value '%s', ignoring: %m", rvalue);
return 0;
}
if (v <= 0 || v >= UINT64_MAX) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Maximum tasks value '%s' out of range, ignoring.", rvalue);
return 0;
}
*tasks_max = (CGroupTasksMax) { v };
}
return 0;
}
int config_parse_delegate(
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) {
CGroupContext *c = data;
UnitType t;
int r;
t = unit_name_to_type(unit);
assert(t != _UNIT_TYPE_INVALID);
if (!unit_vtable[t]->can_delegate) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Delegate= setting not supported for this unit type, ignoring.");
return 0;
}
/* We either accept a boolean value, which may be used to turn on delegation for all controllers, or
* turn it off for all. Or it takes a list of controller names, in which case we add the specified
* controllers to the mask to delegate. Delegate= enables delegation without any controllers. */
if (isempty(rvalue)) {
/* An empty string resets controllers and sets Delegate=yes. */
c->delegate = true;
c->delegate_controllers = 0;
return 0;
}
r = parse_boolean(rvalue);
if (r < 0) {
CGroupMask mask = 0;
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL;
CGroupController cc;
r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
return 0;
}
if (r == 0)
break;
cc = cgroup_controller_from_string(word);
if (cc < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid controller name '%s', ignoring", word);
continue;
}
mask |= CGROUP_CONTROLLER_TO_MASK(cc);
}
c->delegate = true;
c->delegate_controllers |= mask;
} else if (r > 0) {
c->delegate = true;
c->delegate_controllers = CGROUP_MASK_DELEGATE;
} else {
c->delegate = false;
c->delegate_controllers = 0;
}
return 0;
}
int config_parse_delegate_subgroup(
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) {
CGroupContext *c = ASSERT_PTR(data);
UnitType t;
t = unit_name_to_type(unit);
assert(t >= 0);
if (!unit_vtable[t]->can_delegate) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "DelegateSubgroup= setting not supported for this unit type, ignoring.");
return 0;
}
if (isempty(rvalue)) {
c->delegate_subgroup = mfree(c->delegate_subgroup);
return 0;
}
if (cg_needs_escape(rvalue)) { /* Insist that specified names don't need escaping */
log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid control group name, ignoring: %s", rvalue);
return 0;
}
return free_and_strdup_warn(&c->delegate_subgroup, rvalue);
}
int config_parse_managed_oom_mode(
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) {
ManagedOOMMode *mode = data, m;
UnitType t;
t = unit_name_to_type(unit);
assert(t != _UNIT_TYPE_INVALID);
if (!unit_vtable[t]->can_set_managed_oom)
return log_syntax(unit, LOG_WARNING, filename, line, 0, "%s= is not supported for this unit type, ignoring.", lvalue);
if (isempty(rvalue)) {
*mode = MANAGED_OOM_AUTO;
return 0;
}
m = managed_oom_mode_from_string(rvalue);
if (m < 0) {
log_syntax(unit, LOG_WARNING, filename, line, m, "Invalid syntax, ignoring: %s", rvalue);
return 0;
}
*mode = m;
return 0;
}
int config_parse_managed_oom_mem_pressure_limit(
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) {
uint32_t *limit = data;
UnitType t;
int r;
t = unit_name_to_type(unit);
assert(t != _UNIT_TYPE_INVALID);
if (!unit_vtable[t]->can_set_managed_oom)
return log_syntax(unit, LOG_WARNING, filename, line, 0, "%s= is not supported for this unit type, ignoring.", lvalue);
if (isempty(rvalue)) {
*limit = 0;
return 0;
}
r = parse_permyriad(rvalue);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse memory pressure limit value, ignoring: %s", rvalue);
return 0;
}
/* Normalize to 2^32-1 == 100% */
*limit = UINT32_SCALE_FROM_PERMYRIAD(r);
return 0;
}
int config_parse_managed_oom_mem_pressure_duration_sec(
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) {
usec_t usec, *duration = ASSERT_PTR(data);
UnitType t;
int r;
t = unit_name_to_type(unit);
assert(t != _UNIT_TYPE_INVALID);
if (!unit_vtable[t]->can_set_managed_oom)
return log_syntax(unit, LOG_WARNING, filename, line, 0, "%s= is not supported for this unit type, ignoring.", lvalue);
if (isempty(rvalue)) {
*duration = USEC_INFINITY;
return 0;
}
r = parse_sec(rvalue, &usec);
if (r < 0)
return log_syntax_parse_error(unit, filename, line, r, lvalue, rvalue);
if (usec < 1 * USEC_PER_SEC || usec == USEC_INFINITY)
return log_syntax(unit, LOG_WARNING, filename, line, 0, "%s= must be at least 1s and less than infinity, ignoring: %s", lvalue, rvalue);
*duration = usec;
return 0;
}
int config_parse_device_allow(
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_free_ char *path = NULL, *resolved = NULL;
CGroupDevicePermissions permissions;
CGroupContext *c = data;
const char *p = rvalue;
int r;
if (isempty(rvalue)) {
while (c->device_allow)
cgroup_context_free_device_allow(c, c->device_allow);
return 0;
}
r = extract_first_word(&p, &path, NULL, EXTRACT_UNQUOTE);
if (r == -ENOMEM)
return log_oom();
if (r <= 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to extract device path and rights from '%s', ignoring.", rvalue);
return 0;
}
r = unit_path_printf(userdata, path, &resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve unit specifiers in '%s', ignoring: %m", path);
return 0;
}
if (!STARTSWITH_SET(resolved, "block-", "char-")) {
r = path_simplify_and_warn(resolved, 0, unit, filename, line, lvalue);
if (r < 0)
return 0;
if (!valid_device_node_path(resolved)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid device node path '%s', ignoring.", resolved);
return 0;
}
}
permissions = isempty(p) ? 0 : cgroup_device_permissions_from_string(p);
if (permissions < 0) {
log_syntax(unit, LOG_WARNING, filename, line, permissions, "Invalid device rights '%s', ignoring.", p);
return 0;
}
return cgroup_context_add_device_allow(c, resolved, permissions);
}
int config_parse_io_device_weight(
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_free_ char *path = NULL, *resolved = NULL;
CGroupIODeviceWeight *w;
CGroupContext *c = data;
const char *p = ASSERT_PTR(rvalue);
uint64_t u;
int r;
assert(filename);
assert(lvalue);
if (isempty(rvalue)) {
while (c->io_device_weights)
cgroup_context_free_io_device_weight(c, c->io_device_weights);
return 0;
}
r = extract_first_word(&p, &path, NULL, EXTRACT_UNQUOTE);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to extract device path and weight from '%s', ignoring.", rvalue);
return 0;
}
if (r == 0 || isempty(p)) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Invalid device path or weight specified in '%s', ignoring.", rvalue);
return 0;
}
r = unit_path_printf(userdata, path, &resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve unit specifiers in '%s', ignoring: %m", path);
return 0;
}
r = path_simplify_and_warn(resolved, 0, unit, filename, line, lvalue);
if (r < 0)
return 0;
r = cg_weight_parse(p, &u);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "IO weight '%s' invalid, ignoring: %m", p);
return 0;
}
assert(u != CGROUP_WEIGHT_INVALID);
w = new0(CGroupIODeviceWeight, 1);
if (!w)
return log_oom();
w->path = TAKE_PTR(resolved);
w->weight = u;
LIST_APPEND(device_weights, c->io_device_weights, w);
return 0;
}
int config_parse_io_device_latency(
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_free_ char *path = NULL, *resolved = NULL;
CGroupIODeviceLatency *l;
CGroupContext *c = data;
const char *p = ASSERT_PTR(rvalue);
usec_t usec;
int r;
assert(filename);
assert(lvalue);
if (isempty(rvalue)) {
while (c->io_device_latencies)
cgroup_context_free_io_device_latency(c, c->io_device_latencies);
return 0;
}
r = extract_first_word(&p, &path, NULL, EXTRACT_UNQUOTE);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to extract device path and latency from '%s', ignoring.", rvalue);
return 0;
}
if (r == 0 || isempty(p)) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Invalid device path or latency specified in '%s', ignoring.", rvalue);
return 0;
}
r = unit_path_printf(userdata, path, &resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve unit specifiers in '%s', ignoring: %m", path);
return 0;
}
r = path_simplify_and_warn(resolved, 0, unit, filename, line, lvalue);
if (r < 0)
return 0;
r = parse_sec(p, &usec);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse timer value, ignoring: %s", p);
return 0;
}
l = new0(CGroupIODeviceLatency, 1);
if (!l)
return log_oom();
l->path = TAKE_PTR(resolved);
l->target_usec = usec;
LIST_APPEND(device_latencies, c->io_device_latencies, l);
return 0;
}
int config_parse_io_limit(
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_free_ char *path = NULL, *resolved = NULL;
CGroupIODeviceLimit *l = NULL;
CGroupContext *c = data;
CGroupIOLimitType type;
const char *p = ASSERT_PTR(rvalue);
uint64_t num;
int r;
assert(filename);
assert(lvalue);
type = cgroup_io_limit_type_from_string(lvalue);
assert(type >= 0);
if (isempty(rvalue)) {
LIST_FOREACH(device_limits, t, c->io_device_limits)
t->limits[type] = cgroup_io_limit_defaults[type];
return 0;
}
r = extract_first_word(&p, &path, NULL, EXTRACT_UNQUOTE);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to extract device node and bandwidth from '%s', ignoring.", rvalue);
return 0;
}
if (r == 0 || isempty(p)) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Invalid device node or bandwidth specified in '%s', ignoring.", rvalue);
return 0;
}
r = unit_path_printf(userdata, path, &resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve unit specifiers in '%s', ignoring: %m", path);
return 0;
}
r = path_simplify_and_warn(resolved, 0, unit, filename, line, lvalue);
if (r < 0)
return 0;
if (streq(p, "infinity"))
num = CGROUP_LIMIT_MAX;
else {
r = parse_size(p, 1000, &num);
if (r < 0 || num <= 0) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid IO limit '%s', ignoring.", p);
return 0;
}
}
LIST_FOREACH(device_limits, t, c->io_device_limits)
if (path_equal(resolved, t->path)) {
l = t;
break;
}
if (!l) {
l = new0(CGroupIODeviceLimit, 1);
if (!l)
return log_oom();
l->path = TAKE_PTR(resolved);
for (CGroupIOLimitType i = 0; i < _CGROUP_IO_LIMIT_TYPE_MAX; i++)
l->limits[i] = cgroup_io_limit_defaults[i];
LIST_APPEND(device_limits, c->io_device_limits, l);
}
l->limits[type] = num;
return 0;
}
int config_parse_job_mode_isolate(
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) {
JobMode *m = data;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
r = parse_boolean(rvalue);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse boolean, ignoring: %s", rvalue);
return 0;
}
log_notice("%s is deprecated. Please use OnFailureJobMode= instead", lvalue);
*m = r ? JOB_ISOLATE : JOB_REPLACE;
return 0;
}
int config_parse_exec_directories(
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) {
ExecDirectory *ed = ASSERT_PTR(data);
const Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
exec_directory_done(ed);
return 0;
}
for (const char *p = rvalue;;) {
_cleanup_free_ char *tuple = NULL;
r = extract_first_word(&p, &tuple, NULL, EXTRACT_UNQUOTE|EXTRACT_RETAIN_ESCAPE);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Invalid syntax %s=%s, ignoring: %m", lvalue, rvalue);
return 0;
}
if (r == 0)
return 0;
_cleanup_free_ char *src = NULL, *dest = NULL, *flags = NULL;
const char *q = tuple;
r = extract_many_words(&q, ":", EXTRACT_CUNESCAPE|EXTRACT_UNESCAPE_SEPARATORS|EXTRACT_DONT_COALESCE_SEPARATORS, &src, &dest, &flags);
if (r == -ENOMEM)
return log_oom();
if (r <= 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Invalid syntax in %s=, ignoring: %s", lvalue, tuple);
return 0;
}
_cleanup_free_ char *sresolved = NULL;
r = unit_path_printf(u, src, &sresolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve unit specifiers in \"%s\", ignoring: %m", src);
continue;
}
r = path_simplify_and_warn(sresolved, PATH_CHECK_RELATIVE, unit, filename, line, lvalue);
if (r < 0)
continue;
if (path_startswith(sresolved, "private")) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"%s= path can't be 'private', ignoring assignment: %s", lvalue, tuple);
continue;
}
if (!isempty(dest) && streq(lvalue, "ConfigurationDirectory")) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Additional parameter is not supported for ConfigurationDirectory, ignoring: %s", tuple);
continue;
}
/* For State and Runtime directories we support an optional destination parameter, which
* will be used to create a symlink to the source. */
_cleanup_free_ char *dresolved = NULL;
if (!isempty(dest)) {
r = unit_path_printf(u, dest, &dresolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve unit specifiers in \"%s\", ignoring: %m", dest);
continue;
}
r = path_simplify_and_warn(dresolved, PATH_CHECK_RELATIVE, unit, filename, line, lvalue);
if (r < 0)
continue;
}
ExecDirectoryFlags exec_directory_flags = exec_directory_flags_from_string(flags);
if (exec_directory_flags < 0 || (exec_directory_flags & ~_EXEC_DIRECTORY_FLAGS_PUBLIC) != 0) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Invalid flags for %s=, ignoring: %s", lvalue, flags);
continue;
}
r = exec_directory_add(ed, sresolved, dresolved, exec_directory_flags);
if (r < 0)
return log_oom();
}
}
int config_parse_exec_quota(
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) {
QuotaLimit *quota_limit = ASSERT_PTR(data);
uint64_t quota_absolute = UINT64_MAX;
uint32_t quota_scale = UINT32_MAX;
int r;
if (isempty(rvalue) || streq(rvalue, "off")) {
quota_limit->quota_enforce = false;
quota_limit->quota_absolute = UINT64_MAX;
quota_limit->quota_scale = UINT32_MAX;
return 0;
}
r = parse_permyriad(rvalue);
if (r < 0) {
r = parse_size(rvalue, 1024, &quota_absolute);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse disk quota value, ignoring: %s", rvalue);
return 0;
}
} else
/* Normalize to 2^32-1 == 100% */
quota_scale = UINT32_SCALE_FROM_PERMYRIAD(r);
quota_limit->quota_absolute = quota_absolute;
quota_limit->quota_scale = quota_scale;
quota_limit->quota_enforce = true;
return 0;
}
int config_parse_set_credential(
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) {
ExecContext *context = ASSERT_PTR(data);
const Unit *u = ASSERT_PTR(userdata);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
context->set_credentials = hashmap_free(context->set_credentials);
return 0;
}
_cleanup_free_ char *word = NULL, *id = NULL;
const char *p = rvalue;
bool encrypted = ltype;
r = extract_first_word(&p, &word, ":", EXTRACT_DONT_COALESCE_SEPARATORS);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to extract credential name, ignoring: %s", rvalue);
return 0;
}
if (r == 0 || isempty(p)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid syntax, ignoring: %s", rvalue);
return 0;
}
r = unit_cred_printf(u, word, &id);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in \"%s\", ignoring: %m", word);
return 0;
}
if (!credential_name_valid(id)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Credential name \"%s\" not valid, ignoring.", id);
return 0;
}
_cleanup_free_ void *d = NULL;
size_t size;
if (encrypted) {
r = unbase64mem_full(p, SIZE_MAX, /* secure= */ true, &d, &size);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Encrypted credential data not valid Base64 data, ignoring: %m");
return 0;
}
} else {
ssize_t l;
/* We support escape codes here, so that users can insert trailing \n if they like */
l = cunescape(p, UNESCAPE_ACCEPT_NUL, (char**) &d);
if (l == -ENOMEM)
return log_oom();
if (l < 0) {
log_syntax(unit, LOG_WARNING, filename, line, l, "Can't unescape \"%s\", ignoring: %m", p);
return 0;
}
size = l;
}
r = exec_context_put_set_credential(context, id, TAKE_PTR(d), size, encrypted);
if (r < 0)
return log_error_errno(r, "Failed to store set credential '%s': %m", rvalue);
return 0;
}
int config_parse_load_credential(
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) {
ExecContext *context = ASSERT_PTR(data);
const Unit *u = ASSERT_PTR(userdata);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
context->load_credentials = hashmap_free(context->load_credentials);
return 0;
}
_cleanup_free_ char *word = NULL, *id = NULL, *path = NULL;
const char *p = rvalue;
bool encrypted = ltype;
r = extract_first_word(&p, &word, ":", EXTRACT_DONT_COALESCE_SEPARATORS);
if (r == -ENOMEM)
return log_oom();
if (r <= 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
return 0;
}
r = unit_cred_printf(u, word, &id);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in \"%s\", ignoring: %m", word);
return 0;
}
if (!credential_name_valid(id)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Credential name \"%s\" not valid, ignoring.", id);
return 0;
}
if (isempty(p)) {
/* If only one field is specified take it as shortcut for inheriting a credential named
* the same way from our parent */
path = strdup(id);
if (!path)
return log_oom();
} else {
r = unit_path_printf(u, p, &path);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in \"%s\", ignoring: %m", p);
return 0;
}
if (path_is_absolute(path) ? !path_is_normalized(path) : !credential_name_valid(path)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Credential source \"%s\" not valid, ignoring.", path);
return 0;
}
}
r = exec_context_put_load_credential(context, id, path, encrypted);
if (r < 0)
return log_error_errno(r, "Failed to store load credential '%s': %m", rvalue);
return 0;
}
int config_parse_import_credential(
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) {
ExecContext *context = ASSERT_PTR(data);
Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
context->import_credentials = ordered_set_free(context->import_credentials);
return 0;
}
const char *p = rvalue;
_cleanup_free_ char *word = NULL, *glob = NULL;
r = extract_first_word(&p, &word, ":", EXTRACT_DONT_COALESCE_SEPARATORS);
if (r == -ENOMEM)
return log_oom();
if (r <= 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
return 0;
}
r = unit_cred_printf(u, word, &glob);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in \"%s\", ignoring: %m", word);
return 0;
}
if (!credential_glob_valid(glob)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Credential name or glob \"%s\" not valid, ignoring.", glob);
return 0;
}
if (!isempty(p) && !credential_name_valid(p)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Credential name \"%s\" not valid, ignoring.", p);
return 0;
}
r = exec_context_put_import_credential(context, glob, p);
if (r < 0)
return log_error_errno(r, "Failed to store import credential '%s': %m", rvalue);
return 0;
}
int config_parse_set_status(
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) {
ExitStatusSet *status_set = ASSERT_PTR(data);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
/* Empty assignment resets the list */
if (isempty(rvalue)) {
exit_status_set_free(status_set);
return 0;
}
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL;
Bitmap *bitmap;
r = extract_first_word(&p, &word, NULL, 0);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to parse %s=%s, ignoring: %m", lvalue, rvalue);
return 0;
}
if (r == 0)
return 0;
/* We need to call exit_status_from_string() first, because we want
* to parse numbers as exit statuses, not signals. */
r = exit_status_from_string(word);
if (r >= 0) {
assert(r >= 0 && r < 256);
bitmap = &status_set->status;
} else {
r = signal_from_string(word);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to parse value, ignoring: %s", word);
continue;
}
bitmap = &status_set->signal;
}
r = bitmap_set(bitmap, r);
if (r < 0)
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to set signal or status %s, ignoring: %m", word);
}
}
int config_parse_namespace_path_strv(
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) {
const Unit *u = userdata;
char*** sv = ASSERT_PTR(data);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
*sv = strv_free(*sv);
return 0;
}
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL, *resolved = NULL, *joined = NULL;
const char *w;
bool ignore_enoent = false, shall_prefix = false;
r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to extract first word, ignoring: %s", rvalue);
return 0;
}
if (r == 0)
break;
w = word;
if (startswith(w, "-")) {
ignore_enoent = true;
w++;
}
if (startswith(w, "+")) {
shall_prefix = true;
w++;
}
r = unit_path_printf(u, w, &resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s: %m", w);
continue;
}
r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
if (r < 0)
continue;
joined = strjoin(ignore_enoent ? "-" : "",
shall_prefix ? "+" : "",
resolved);
r = strv_push(sv, joined);
if (r < 0)
return log_oom();
joined = NULL;
}
return 0;
}
int config_parse_temporary_filesystems(
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) {
const Unit *u = userdata;
ExecContext *c = ASSERT_PTR(data);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
temporary_filesystem_free_many(c->temporary_filesystems, c->n_temporary_filesystems);
c->temporary_filesystems = NULL;
c->n_temporary_filesystems = 0;
return 0;
}
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL, *path = NULL, *resolved = NULL;
const char *w;
r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to extract first word, ignoring: %s", rvalue);
return 0;
}
if (r == 0)
return 0;
w = word;
r = extract_first_word(&w, &path, ":", EXTRACT_DONT_COALESCE_SEPARATORS);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to extract first word, ignoring: %s", word);
continue;
}
if (r == 0) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid syntax, ignoring: %s", word);
continue;
}
r = unit_path_printf(u, path, &resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", path);
continue;
}
r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
if (r < 0)
continue;
r = temporary_filesystem_add(&c->temporary_filesystems, &c->n_temporary_filesystems, resolved, w);
if (r < 0)
return log_oom();
}
}
int config_parse_bind_paths(
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) {
ExecContext *c = ASSERT_PTR(data);
const Unit *u = ASSERT_PTR(userdata);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
bind_mount_free_many(c->bind_mounts, c->n_bind_mounts);
c->bind_mounts = NULL;
c->n_bind_mounts = 0;
return 0;
}
for (const char *p = rvalue;;) {
_cleanup_free_ char *source = NULL, *destination = NULL;
_cleanup_free_ char *sresolved = NULL, *dresolved = NULL;
char *s = NULL, *d = NULL;
bool rbind = true, ignore_enoent = false;
r = extract_first_word(&p, &source, ":" WHITESPACE, EXTRACT_UNQUOTE|EXTRACT_DONT_COALESCE_SEPARATORS);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s, ignoring: %s", lvalue, rvalue);
return 0;
}
if (r == 0)
break;
r = unit_path_printf(u, source, &sresolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve unit specifiers in \"%s\", ignoring: %m", source);
continue;
}
s = sresolved;
if (s[0] == '-') {
ignore_enoent = true;
s++;
}
r = path_simplify_and_warn(s, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
if (r < 0)
continue;
/* Optionally, the destination is specified. */
if (p && p[-1] == ':') {
r = extract_first_word(&p, &destination, ":" WHITESPACE, EXTRACT_UNQUOTE|EXTRACT_DONT_COALESCE_SEPARATORS);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s, ignoring: %s", lvalue, rvalue);
return 0;
}
if (r == 0) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Missing argument after ':', ignoring: %s", s);
continue;
}
r = unit_path_printf(u, destination, &dresolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve specifiers in \"%s\", ignoring: %m", destination);
continue;
}
r = path_simplify_and_warn(dresolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
if (r < 0)
continue;
d = dresolved;
/* Optionally, there's also a short option string specified */
if (p && p[-1] == ':') {
_cleanup_free_ char *options = NULL;
r = extract_first_word(&p, &options, NULL, EXTRACT_UNQUOTE);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s=, ignoring: %s", lvalue, rvalue);
return 0;
}
if (isempty(options) || streq(options, "rbind"))
rbind = true;
else if (streq(options, "norbind"))
rbind = false;
else {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid option string, ignoring setting: %s", options);
continue;
}
}
} else
d = s;
r = bind_mount_add(&c->bind_mounts, &c->n_bind_mounts,
&(BindMount) {
.source = s,
.destination = d,
.read_only = !!strstr(lvalue, "ReadOnly"),
.recursive = rbind,
.ignore_enoent = ignore_enoent,
});
if (r < 0)
return log_oom();
}
return 0;
}
int config_parse_mount_images(
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) {
ExecContext *c = ASSERT_PTR(data);
const Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
c->mount_images = mount_image_free_many(c->mount_images, &c->n_mount_images);
return 0;
}
for (const char *p = rvalue;;) {
_cleanup_(mount_options_free_allp) MountOptions *options = NULL;
_cleanup_free_ char *first = NULL, *second = NULL, *tuple = NULL;
_cleanup_free_ char *sresolved = NULL, *dresolved = NULL;
const char *q = NULL;
char *s = NULL;
bool permissive = false;
r = extract_first_word(&p, &tuple, NULL, EXTRACT_UNQUOTE|EXTRACT_RETAIN_ESCAPE);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Invalid syntax %s=%s, ignoring: %m", lvalue, rvalue);
return 0;
}
if (r == 0)
return 0;
q = tuple;
r = extract_many_words(&q, ":", EXTRACT_CUNESCAPE|EXTRACT_UNESCAPE_SEPARATORS, &first, &second);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Invalid syntax in %s=, ignoring: %s", lvalue, tuple);
return 0;
}
if (r == 0)
continue;
s = first;
if (s[0] == '-') {
permissive = true;
s++;
}
r = unit_path_printf(u, s, &sresolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve unit specifiers in \"%s\", ignoring: %m", s);
continue;
}
r = path_simplify_and_warn(sresolved, PATH_CHECK_ABSOLUTE|PATH_CHECK_NON_API_VFS_DEV_OK, unit, filename, line, lvalue);
if (r < 0)
continue;
if (isempty(second)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Missing destination in %s, ignoring: %s", lvalue, rvalue);
continue;
}
r = unit_path_printf(u, second, &dresolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve specifiers in \"%s\", ignoring: %m", second);
continue;
}
r = path_simplify_and_warn(dresolved, PATH_CHECK_ABSOLUTE|PATH_CHECK_NON_API_VFS_DEV_OK, unit, filename, line, lvalue);
if (r < 0)
continue;
for (;;) {
_cleanup_free_ char *partition = NULL, *mount_options = NULL, *mount_options_resolved = NULL;
MountOptions *o = NULL;
PartitionDesignator partition_designator;
r = extract_many_words(&q, ":", EXTRACT_CUNESCAPE|EXTRACT_UNESCAPE_SEPARATORS, &partition, &mount_options);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", q);
return 0;
}
if (r == 0)
break;
/* Single set of options, applying to the root partition/single filesystem */
if (r == 1) {
r = unit_full_printf(u, partition, &mount_options_resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", first);
continue;
}
o = new(MountOptions, 1);
if (!o)
return log_oom();
*o = (MountOptions) {
.partition_designator = PARTITION_ROOT,
.options = TAKE_PTR(mount_options_resolved),
};
LIST_APPEND(mount_options, options, o);
break;
}
partition_designator = partition_designator_from_string(partition);
if (partition_designator < 0) {
log_syntax(unit, LOG_WARNING, filename, line, partition_designator,
"Invalid partition name %s, ignoring", partition);
continue;
}
r = unit_full_printf(u, mount_options, &mount_options_resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", mount_options);
continue;
}
o = new(MountOptions, 1);
if (!o)
return log_oom();
*o = (MountOptions) {
.partition_designator = partition_designator,
.options = TAKE_PTR(mount_options_resolved),
};
LIST_APPEND(mount_options, options, o);
}
r = mount_image_add(&c->mount_images, &c->n_mount_images,
&(MountImage) {
.source = sresolved,
.destination = dresolved,
.mount_options = options,
.ignore_enoent = permissive,
.type = MOUNT_IMAGE_DISCRETE,
});
if (r < 0)
return log_oom();
}
}
int config_parse_extension_images(
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) {
ExecContext *c = ASSERT_PTR(data);
const Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
c->extension_images = mount_image_free_many(c->extension_images, &c->n_extension_images);
return 0;
}
for (const char *p = rvalue;;) {
_cleanup_free_ char *source = NULL, *tuple = NULL, *sresolved = NULL;
_cleanup_(mount_options_free_allp) MountOptions *options = NULL;
bool permissive = false;
const char *q = NULL;
char *s = NULL;
r = extract_first_word(&p, &tuple, NULL, EXTRACT_UNQUOTE|EXTRACT_RETAIN_ESCAPE);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Invalid syntax %s=%s, ignoring: %m", lvalue, rvalue);
return 0;
}
if (r == 0)
return 0;
q = tuple;
r = extract_first_word(&q, &source, ":", EXTRACT_CUNESCAPE|EXTRACT_UNESCAPE_SEPARATORS);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Invalid syntax in %s=, ignoring: %s", lvalue, tuple);
return 0;
}
if (r == 0)
continue;
s = source;
if (s[0] == '-') {
permissive = true;
s++;
}
r = unit_path_printf(u, s, &sresolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve unit specifiers in \"%s\", ignoring: %m", s);
continue;
}
r = path_simplify_and_warn(sresolved, PATH_CHECK_ABSOLUTE|PATH_CHECK_NON_API_VFS, unit, filename, line, lvalue);
if (r < 0)
continue;
for (;;) {
_cleanup_free_ char *partition = NULL, *mount_options = NULL, *mount_options_resolved = NULL;
MountOptions *o = NULL;
PartitionDesignator partition_designator;
r = extract_many_words(&q, ":", EXTRACT_CUNESCAPE|EXTRACT_UNESCAPE_SEPARATORS, &partition, &mount_options);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", q);
return 0;
}
if (r == 0)
break;
/* Single set of options, applying to the root partition/single filesystem */
if (r == 1) {
r = unit_full_printf(u, partition, &mount_options_resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", partition);
continue;
}
o = new(MountOptions, 1);
if (!o)
return log_oom();
*o = (MountOptions) {
.partition_designator = PARTITION_ROOT,
.options = TAKE_PTR(mount_options_resolved),
};
LIST_APPEND(mount_options, options, o);
break;
}
partition_designator = partition_designator_from_string(partition);
if (partition_designator < 0) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid partition name %s, ignoring", partition);
continue;
}
r = unit_full_printf(u, mount_options, &mount_options_resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", mount_options);
continue;
}
o = new(MountOptions, 1);
if (!o)
return log_oom();
*o = (MountOptions) {
.partition_designator = partition_designator,
.options = TAKE_PTR(mount_options_resolved),
};
LIST_APPEND(mount_options, options, o);
}
r = mount_image_add(&c->extension_images, &c->n_extension_images,
&(MountImage) {
.source = sresolved,
.mount_options = options,
.ignore_enoent = permissive,
.type = MOUNT_IMAGE_EXTENSION,
});
if (r < 0)
return log_oom();
}
}
int config_parse_job_timeout_sec(
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) {
Unit *u = ASSERT_PTR(data);
usec_t usec;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
r = parse_sec_fix_0(rvalue, &usec);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse JobTimeoutSec= parameter, ignoring: %s", rvalue);
return 0;
}
/* If the user explicitly changed JobTimeoutSec= also change JobRunningTimeoutSec=, for compatibility with old
* versions. If JobRunningTimeoutSec= was explicitly set, avoid this however as whatever the user picked should
* count. */
if (!u->job_running_timeout_set)
u->job_running_timeout = usec;
u->job_timeout = usec;
return 0;
}
int config_parse_job_running_timeout_sec(
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) {
Unit *u = ASSERT_PTR(data);
usec_t usec;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
r = parse_sec_fix_0(rvalue, &usec);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse JobRunningTimeoutSec= parameter, ignoring: %s", rvalue);
return 0;
}
u->job_running_timeout = usec;
u->job_running_timeout_set = true;
return 0;
}
int config_parse_emergency_action(
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) {
EmergencyAction *x = ASSERT_PTR(data);
RuntimeScope runtime_scope;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
/* If we have a unit determine the scope based on it */
if (unit)
runtime_scope = ((Unit*) ASSERT_PTR(userdata))->manager->runtime_scope;
else
runtime_scope = ltype; /* otherwise, assume the scope is passed in via ltype */
r = parse_emergency_action(rvalue, runtime_scope, x);
if (r == -EOPNOTSUPP)
log_syntax(unit, LOG_WARNING, filename, line, r,
"%s= specified as %s mode action, ignoring: %s",
lvalue, runtime_scope_to_string(runtime_scope), rvalue);
else if (r < 0)
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to parse %s=, ignoring: %s", lvalue, rvalue);
return 0;
}
int config_parse_pid_file(
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_free_ char *k = NULL, *n = NULL;
const Unit *u = ASSERT_PTR(userdata);
char **s = data;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* An empty assignment removes already set value. */
*s = mfree(*s);
return 0;
}
r = unit_path_printf(u, rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
return 0;
}
/* If this is a relative path make it absolute by prefixing the /run */
n = path_make_absolute(k, u->manager->prefix[EXEC_DIRECTORY_RUNTIME]);
if (!n)
return log_oom();
/* Check that the result is a sensible path */
r = path_simplify_and_warn(n, PATH_CHECK_ABSOLUTE|PATH_CHECK_NON_API_VFS, unit, filename, line, lvalue);
if (r < 0)
return r;
r = patch_var_run(unit, filename, line, lvalue, &n);
if (r < 0)
return r;
free_and_replace(*s, n);
return 0;
}
int config_parse_exit_status(
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) {
int *exit_status = data, r;
uint8_t u;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(exit_status);
if (isempty(rvalue)) {
*exit_status = -1;
return 0;
}
r = safe_atou8(rvalue, &u);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse exit status '%s', ignoring: %m", rvalue);
return 0;
}
*exit_status = u;
return 0;
}
int config_parse_disable_controllers(
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) {
int r;
CGroupContext *c = data;
CGroupMask disabled_mask;
/* 1. If empty, make all controllers eligible for use again.
* 2. If non-empty, merge all listed controllers, space separated. */
if (isempty(rvalue)) {
c->disable_controllers = 0;
return 0;
}
r = cg_mask_from_string(rvalue, &disabled_mask);
if (r < 0 || disabled_mask <= 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid cgroup string: %s, ignoring", rvalue);
return 0;
}
c->disable_controllers |= disabled_mask;
return 0;
}
int config_parse_ip_filter_bpf_progs(
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_free_ char *resolved = NULL;
const Unit *u = userdata;
char ***paths = ASSERT_PTR(data);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
*paths = strv_free(*paths);
return 0;
}
r = unit_path_printf(u, rvalue, &resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
return 0;
}
r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
if (r < 0)
return 0;
if (strv_contains(*paths, resolved))
return 0;
r = strv_extend(paths, resolved);
if (r < 0)
return log_oom();
if (bpf_program_supported() <= 0) {
static bool warned = false;
log_syntax(unit, warned ? LOG_DEBUG : LOG_WARNING, filename, line, 0,
"Configures an IP firewall with BPF programs (%s=%s), but the local system does not support BPF/cgroup based firewalling with multiple filters. "
"Starting this unit will fail! (This warning is only shown for the first loaded unit using IP firewalling.)", lvalue, rvalue);
warned = true;
}
return 0;
}
int config_parse_bpf_foreign_program(
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_free_ char *resolved = NULL, *word = NULL;
CGroupContext *c = data;
const char *p = ASSERT_PTR(rvalue);
Unit *u = userdata;
int attach_type, r;
assert(filename);
assert(lvalue);
if (isempty(rvalue)) {
while (c->bpf_foreign_programs)
cgroup_context_remove_bpf_foreign_program(c, c->bpf_foreign_programs);
return 0;
}
r = extract_first_word(&p, &word, ":", 0);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse foreign BPF program, ignoring: %s", rvalue);
return 0;
}
if (r == 0 || isempty(p)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid syntax in %s=, ignoring: %s", lvalue, rvalue);
return 0;
}
attach_type = bpf_cgroup_attach_type_from_string(word);
if (attach_type < 0) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Unknown BPF attach type=%s, ignoring: %s", word, rvalue);
return 0;
}
r = unit_path_printf(u, p, &resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %s", p, rvalue);
return 0;
}
r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE, unit, filename, line, lvalue);
if (r < 0)
return 0;
r = cgroup_context_add_bpf_foreign_program(c, attach_type, resolved);
if (r < 0)
return log_error_errno(r, "Failed to add foreign BPF program to cgroup context: %m");
return 0;
}
int config_parse_cgroup_socket_bind(
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_free_ CGroupSocketBindItem *item = NULL;
CGroupSocketBindItem **head = data;
uint16_t nr_ports, port_min;
int af, ip_protocol, r;
if (isempty(rvalue)) {
cgroup_context_remove_socket_bind(head);
return 0;
}
r = parse_socket_bind_item(rvalue, &af, &ip_protocol, &nr_ports, &port_min);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Unable to parse %s= assignment, ignoring: %s", lvalue, rvalue);
return 0;
}
item = new(CGroupSocketBindItem, 1);
if (!item)
return log_oom();
*item = (CGroupSocketBindItem) {
.address_family = af,
.ip_protocol = ip_protocol,
.nr_ports = nr_ports,
.port_min = port_min,
};
LIST_PREPEND(socket_bind_items, *head, TAKE_PTR(item));
return 0;
}
int config_parse_restrict_network_interfaces(
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) {
CGroupContext *c = ASSERT_PTR(data);
bool is_allow_rule = true;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
c->restrict_network_interfaces = set_free(c->restrict_network_interfaces);
return 0;
}
if (rvalue[0] == '~') {
is_allow_rule = false;
rvalue++;
}
if (set_isempty(c->restrict_network_interfaces))
/* Only initialize this when creating the set */
c->restrict_network_interfaces_is_allow_list = is_allow_rule;
for (const char *p = rvalue;;) {
_cleanup_free_ char *word = NULL;
r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
if (r == 0)
break;
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Trailing garbage in %s, ignoring: %s", lvalue, rvalue);
break;
}
if (!ifname_valid_full(word, IFNAME_VALID_ALTERNATIVE)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid interface name, ignoring: %s", word);
continue;
}
if (c->restrict_network_interfaces_is_allow_list != is_allow_rule)
free(set_remove(c->restrict_network_interfaces, word));
else {
r = set_put_strdup(&c->restrict_network_interfaces, word);
if (r < 0)
return log_oom();
}
}
return 0;
}
int config_parse_mount_node(
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) {
const Unit *u = ASSERT_PTR(userdata);
_cleanup_free_ char *resolved = NULL, *path = NULL;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
r = unit_full_printf(u, rvalue, &resolved);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
return 0;
}
path = fstab_node_to_udev_node(resolved);
if (!path)
return log_oom();
/* The source passed is not necessarily something we understand, and we pass it as-is to mount/swapon,
* so path_is_valid is not used. But let's check for basic sanity, i.e. if the source is longer than
* PATH_MAX, you're likely doing something wrong. */
if (strlen(path) >= PATH_MAX) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Resolved mount path '%s' too long, ignoring.", path);
return 0;
}
return config_parse_string(unit, filename, line, section, section_line, lvalue, ltype, path, data, userdata);
}
int config_parse_concurrency_max(
const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
unsigned *concurrency_max = ASSERT_PTR(data);
if (isempty(rvalue) || streq(rvalue, "infinity")) {
*concurrency_max = UINT_MAX;
return 0;
}
return config_parse_unsigned(unit, filename, line, section, section_line, lvalue, ltype, rvalue, data, userdata);
}
static int merge_by_names(Unit *u, Set *names, const char *id) {
char *k;
int r;
assert(u);
/* Let's try to add in all names that are aliases of this unit */
while ((k = set_steal_first(names))) {
_cleanup_free_ _unused_ char *free_k = k;
/* First try to merge in the other name into our unit */
r = unit_merge_by_name(u, k);
if (r < 0) {
Unit *other;
/* Hmm, we couldn't merge the other unit into ours? Then let's try it the other way
* round. */
other = manager_get_unit(u->manager, k);
if (!other)
return r; /* return previous failure */
r = unit_merge(other, u);
if (r < 0)
return r;
return merge_by_names(other, names, NULL);
}
if (streq_ptr(id, k))
unit_choose_id(u, id);
}
return 0;
}
int unit_load_fragment(Unit *u) {
int r;
assert(u);
assert(u->load_state == UNIT_STUB);
assert(u->id);
if (u->transient) {
u->access_selinux_context = mfree(u->access_selinux_context);
u->load_state = UNIT_LOADED;
return 0;
}
/* Possibly rebuild the fragment map to catch new units */
r = unit_file_build_name_map(&u->manager->lookup_paths,
&u->manager->unit_cache_timestamp_hash,
&u->manager->unit_id_map,
&u->manager->unit_name_map,
&u->manager->unit_path_cache);
if (r < 0)
return log_error_errno(r, "Failed to rebuild name map: %m");
const char *fragment;
_cleanup_set_free_ Set *names = NULL;
r = unit_file_find_fragment(u->manager->unit_id_map,
u->manager->unit_name_map,
u->id,
&fragment,
&names);
if (r < 0 && r != -ENOENT)
return r;
if (fragment) {
/* Open the file, check if this is a mask, otherwise read. */
_cleanup_fclose_ FILE *f = NULL;
struct stat st;
/* Try to open the file name. A symlink is OK, for example for linked files or masks. We
* expect that all symlinks within the lookup paths have been already resolved, but we don't
* verify this here. */
f = fopen(fragment, "re");
if (!f)
return log_unit_notice_errno(u, errno, "Failed to open %s: %m", fragment);
if (fstat(fileno(f), &st) < 0)
return -errno;
r = free_and_strdup(&u->fragment_path, fragment);
if (r < 0)
return r;
if (null_or_empty(&st)) {
/* Unit file is masked */
u->load_state = u->perpetual ? UNIT_LOADED : UNIT_MASKED; /* don't allow perpetual units to ever be masked */
u->fragment_mtime = 0;
u->access_selinux_context = mfree(u->access_selinux_context);
} else {
#if HAVE_SELINUX
if (mac_selinux_use()) {
_cleanup_freecon_ char *selcon = NULL;
/* Cache the SELinux context of the unit file here. We'll make use of when checking access permissions to loaded units */
r = sym_fgetfilecon_raw(fileno(f), &selcon);
if (r < 0)
log_unit_warning_errno(u, r, "Failed to read SELinux context of '%s', ignoring: %m", fragment);
r = free_and_strdup(&u->access_selinux_context, selcon);
if (r < 0)
return r;
} else
#endif
u->access_selinux_context = mfree(u->access_selinux_context);
u->load_state = UNIT_LOADED;
u->fragment_mtime = timespec_load(&st.st_mtim);
/* Now, parse the file contents */
r = config_parse(u->id, fragment, f,
UNIT_VTABLE(u)->sections,
config_item_perf_lookup, load_fragment_gperf_lookup,
0,
u,
NULL);
if (r == -ENOEXEC)
log_unit_notice_errno(u, r, "Unit configuration has fatal error, unit will not be started.");
if (r < 0)
return r;
}
}
/* Call merge_by_names with the name derived from the fragment path as the preferred name.
*
* We do the merge dance here because for some unit types, the unit might have aliases which are not
* declared in the file system. In particular, this is true (and frequent) for device and swap units.
*/
const char *id = u->id;
_cleanup_free_ char *filename = NULL, *free_id = NULL;
if (fragment) {
r = path_extract_filename(fragment, &filename);
if (r < 0)
return log_debug_errno(r, "Failed to extract filename from fragment '%s': %m", fragment);
id = filename;
if (unit_name_is_valid(id, UNIT_NAME_TEMPLATE)) {
assert(u->instance); /* If we're not trying to use a template for non-instanced unit,
* this must be set. */
r = unit_name_replace_instance(id, u->instance, &free_id);
if (r < 0)
return log_debug_errno(r, "Failed to build id (%s + %s): %m", id, u->instance);
id = free_id;
}
}
return merge_by_names(u, names, id);
}
void unit_dump_config_items(FILE *f) {
static const struct {
const ConfigParserCallback callback;
const char *rvalue;
} table[] = {
{ config_parse_warn_compat, "NOTSUPPORTED" },
{ config_parse_int, "INTEGER" },
{ config_parse_unsigned, "UNSIGNED" },
{ config_parse_iec_size, "SIZE" },
{ config_parse_iec_uint64, "SIZE" },
{ config_parse_si_uint64, "SIZE" },
{ config_parse_bool, "BOOLEAN" },
{ config_parse_string, "STRING" },
{ config_parse_path, "PATH" },
{ config_parse_unit_path_printf, "PATH" },
{ config_parse_colon_separated_paths, "PATH" },
{ config_parse_strv, "STRING [...]" },
{ config_parse_exec_nice, "NICE" },
{ config_parse_exec_oom_score_adjust, "OOMSCOREADJUST" },
{ config_parse_exec_io_class, "IOCLASS" },
{ config_parse_exec_io_priority, "IOPRIORITY" },
{ config_parse_exec_cpu_sched_policy, "CPUSCHEDPOLICY" },
{ config_parse_exec_cpu_sched_prio, "CPUSCHEDPRIO" },
{ config_parse_exec_cpu_affinity, "CPUAFFINITY" },
{ config_parse_mode, "MODE" },
{ config_parse_unit_env_file, "FILE" },
{ config_parse_exec_output, "OUTPUT" },
{ config_parse_exec_input, "INPUT" },
{ config_parse_log_facility, "FACILITY" },
{ config_parse_log_level, "LEVEL" },
{ config_parse_exec_secure_bits, "SECUREBITS" },
{ config_parse_capability_set, "BOUNDINGSET" },
{ config_parse_rlimit, "LIMIT" },
{ config_parse_unit_deps, "UNIT [...]" },
{ config_parse_exec, "PATH [ARGUMENT [...]]" },
{ config_parse_service_type, "SERVICETYPE" },
{ config_parse_service_exit_type, "SERVICEEXITTYPE" },
{ config_parse_service_restart, "SERVICERESTART" },
{ config_parse_service_restart_mode, "SERVICERESTARTMODE" },
{ config_parse_service_timeout_failure_mode, "TIMEOUTMODE" },
{ config_parse_kill_mode, "KILLMODE" },
{ config_parse_signal, "SIGNAL" },
{ config_parse_socket_listen, "SOCKET [...]" },
{ config_parse_socket_bind, "SOCKETBIND" },
{ config_parse_socket_bindtodevice, "NETWORKINTERFACE" },
{ config_parse_sec, "SECONDS" },
{ config_parse_nsec, "NANOSECONDS" },
{ config_parse_namespace_path_strv, "PATH [...]" },
{ config_parse_bind_paths, "PATH[:PATH[:OPTIONS]] [...]" },
{ config_parse_unit_mounts_for, "PATH [...]" },
{ config_parse_exec_mount_propagation_flag,
"MOUNTFLAG" },
{ config_parse_unit_string_printf, "STRING" },
{ config_parse_trigger_unit, "UNIT" },
{ config_parse_timer, "TIMER" },
{ config_parse_path_spec, "PATH" },
{ config_parse_notify_access, "ACCESS" },
{ config_parse_ip_tos, "TOS" },
{ config_parse_unit_condition_path, "CONDITION" },
{ config_parse_unit_condition_string, "CONDITION" },
{ config_parse_unit_slice, "SLICE" },
{ config_parse_documentation, "URL" },
{ config_parse_service_timeout, "SECONDS" },
{ config_parse_emergency_action, "ACTION" },
{ config_parse_set_status, "STATUS" },
{ config_parse_service_sockets, "SOCKETS" },
{ config_parse_environ, "ENVIRON" },
#if HAVE_SECCOMP
{ config_parse_syscall_filter, "SYSCALLS" },
{ config_parse_syscall_archs, "ARCHS" },
{ config_parse_syscall_errno, "ERRNO" },
{ config_parse_syscall_log, "SYSCALLS" },
{ config_parse_address_families, "FAMILIES" },
#endif
{ config_parse_namespace_flags, "NAMESPACES" },
{ config_parse_restrict_filesystems, "FILESYSTEMS" },
{ config_parse_cg_weight, "WEIGHT" },
{ config_parse_cg_cpu_weight, "CPUWEIGHT" },
{ config_parse_memory_limit, "LIMIT" },
{ config_parse_device_allow, "DEVICE" },
{ config_parse_device_policy, "POLICY" },
{ config_parse_io_limit, "LIMIT" },
{ config_parse_io_device_weight, "DEVICEWEIGHT" },
{ config_parse_io_device_latency, "DEVICELATENCY" },
{ config_parse_long, "LONG" },
{ config_parse_socket_service, "SERVICE" },
#if HAVE_SELINUX
{ config_parse_exec_selinux_context, "LABEL" },
#endif
{ config_parse_job_mode, "MODE" },
{ config_parse_job_mode_isolate, "BOOLEAN" },
{ config_parse_personality, "PERSONALITY" },
{ config_parse_log_filter_patterns, "REGEX" },
{ config_parse_mount_node, "NODE" },
{ config_parse_bpf_delegate_commands, "BPF_DELEGATE_COMMANDS" },
{ config_parse_bpf_delegate_maps, "BPF_DELEGATE_MAPS" },
{ config_parse_bpf_delegate_programs, "BPF_DELEGATE_PROGRAMS" },
{ config_parse_bpf_delegate_attachments, "BPF_DELEGATE_ATTACHMENTS" },
};
const char *prev = NULL;
assert(f);
NULSTR_FOREACH(i, load_fragment_gperf_nulstr) {
const char *rvalue = "OTHER", *lvalue;
const ConfigPerfItem *p;
const char *dot;
assert_se(p = load_fragment_gperf_lookup(i, strlen(i)));
/* Hide legacy settings */
if (p->parse == config_parse_warn_compat &&
p->ltype == DISABLED_LEGACY)
continue;
FOREACH_ELEMENT(j, table)
if (p->parse == j->callback) {
rvalue = j->rvalue;
break;
}
dot = strchr(i, '.');
lvalue = dot ? dot + 1 : i;
if (dot) {
size_t prefix_len = dot - i;
if (!prev || !strneq(prev, i, prefix_len+1)) {
if (prev)
fputc('\n', f);
fprintf(f, "[%.*s]\n", (int) prefix_len, i);
}
}
fprintf(f, "%s=%s\n", lvalue, rvalue);
prev = i;
}
}
int config_parse_show_status(
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) {
int k;
ShowStatus *b = ASSERT_PTR(data);
assert(filename);
assert(lvalue);
assert(rvalue);
k = parse_show_status(rvalue, b);
if (k < 0)
log_syntax(unit, LOG_WARNING, filename, line, k, "Failed to parse show status setting, ignoring: %s", rvalue);
return 0;
}
int config_parse_output_restricted(
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) {
ExecOutput t, *eo = ASSERT_PTR(data);
bool obsolete = false;
assert(filename);
assert(lvalue);
assert(rvalue);
if (streq(rvalue, "syslog")) {
t = EXEC_OUTPUT_JOURNAL;
obsolete = true;
} else if (streq(rvalue, "syslog+console")) {
t = EXEC_OUTPUT_JOURNAL_AND_CONSOLE;
obsolete = true;
} else {
t = exec_output_from_string(rvalue);
if (t < 0) {
log_syntax(unit, LOG_WARNING, filename, line, t, "Failed to parse output type, ignoring: %s", rvalue);
return 0;
}
if (IN_SET(t, EXEC_OUTPUT_SOCKET, EXEC_OUTPUT_NAMED_FD, EXEC_OUTPUT_FILE, EXEC_OUTPUT_FILE_APPEND, EXEC_OUTPUT_FILE_TRUNCATE)) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Standard output types socket, fd:, file:, append:, truncate: are not supported as defaults, ignoring: %s", rvalue);
return 0;
}
}
if (obsolete)
log_syntax(unit, LOG_NOTICE, filename, line, 0,
"Standard output type %s is obsolete, automatically updating to %s. Please update your configuration.",
rvalue, exec_output_to_string(t));
*eo = t;
return 0;
}
int config_parse_crash_chvt(
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) {
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
r = parse_crash_chvt(rvalue, data);
if (r < 0)
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse CrashChangeVT= setting, ignoring: %s", rvalue);
return 0;
}
int config_parse_swap_priority(
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) {
Swap *s = ASSERT_PTR(userdata);
int r, priority;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
s->parameters_fragment.priority = -1;
s->parameters_fragment.priority_set = false;
return 0;
}
r = safe_atoi(rvalue, &priority);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid swap priority '%s', ignoring.", rvalue);
return 0;
}
if (priority < -1) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Sorry, swap priorities smaller than -1 may only be assigned by the kernel itself, ignoring: %s", rvalue);
return 0;
}
if (priority > 32767) {
log_syntax(unit, LOG_WARNING, filename, line, 0, "Swap priority out of range, ignoring: %s", rvalue);
return 0;
}
s->parameters_fragment.priority = priority;
s->parameters_fragment.priority_set = true;
return 0;
}
int config_parse_watchdog_sec(
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) {
usec_t *usec = data;
assert(filename);
assert(lvalue);
assert(rvalue);
/* This is called for {Runtime,Reboot,KExec}WatchdogSec= where "default" maps to
* USEC_INFINITY internally. */
if (streq(rvalue, "default"))
*usec = USEC_INFINITY;
else if (streq(rvalue, "off"))
*usec = 0;
else
return config_parse_sec(unit, filename, line, section, section_line, lvalue, ltype, rvalue, data, userdata);
return 0;
}
int config_parse_tty_size(
const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
unsigned *sz = data;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
*sz = UINT_MAX;
return 0;
}
return config_parse_unsigned(unit, filename, line, section, section_line, lvalue, ltype, rvalue, data, userdata);
}
int config_parse_log_filter_patterns(
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) {
ExecContext *c = ASSERT_PTR(data);
const char *pattern = ASSERT_PTR(rvalue);
bool is_allowlist = true;
int r;
assert(filename);
assert(lvalue);
if (isempty(pattern)) {
/* Empty assignment resets the lists. */
c->log_filter_allowed_patterns = set_free(c->log_filter_allowed_patterns);
c->log_filter_denied_patterns = set_free(c->log_filter_denied_patterns);
return 0;
}
if (pattern[0] == '~') {
is_allowlist = false;
pattern++;
if (isempty(pattern))
/* LogFilterPatterns=~ is not considered a valid pattern. */
return log_syntax(unit, LOG_WARNING, filename, line, 0,
"Regex pattern invalid, ignoring: %s=%s", lvalue, rvalue);
}
if (pattern_compile_and_log(pattern, 0, NULL) < 0)
return 0;
r = set_put_strdup(is_allowlist ? &c->log_filter_allowed_patterns : &c->log_filter_denied_patterns,
pattern);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to store log filtering pattern, ignoring: %s=%s", lvalue, rvalue);
return 0;
}
return 0;
}
int config_parse_open_file(
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_(open_file_freep) OpenFile *of = NULL;
OpenFile **head = ASSERT_PTR(data);
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
open_file_free_many(head);
return 0;
}
r = open_file_parse(rvalue, &of);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse OpenFile= setting, ignoring: %s", rvalue);
return 0;
}
LIST_APPEND(open_files, *head, TAKE_PTR(of));
return 0;
}
int config_parse_cgroup_nft_set(
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) {
CGroupContext *c = ASSERT_PTR(data);
Unit *u = ASSERT_PTR(userdata);
return config_parse_nft_set(unit, filename, line, section, section_line, lvalue, ltype, rvalue, &c->nft_set_context, u);
}
int config_parse_protect_hostname(
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) {
ExecContext *c = ASSERT_PTR(data);
Unit *u = ASSERT_PTR(userdata);
_cleanup_free_ char *h = NULL, *p = NULL;
int r;
if (isempty(rvalue)) {
c->protect_hostname = PROTECT_HOSTNAME_NO;
c->private_hostname = mfree(c->private_hostname);
return 1;
}
const char *colon = strchr(rvalue, ':');
if (colon) {
r = unit_full_printf_full(u, colon + 1, LINUX_HOST_NAME_MAX, &h);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r,
"Failed to resolve unit specifiers in '%s', ignoring: %m", colon + 1);
return 0;
}
if (!hostname_is_valid(h, /* flags= */ 0))
return log_syntax(unit, LOG_WARNING, filename, line, 0,
"Invalid hostname is specified to %s=, ignoring: %s", lvalue, h);
p = strndup(rvalue, colon - rvalue);
if (!p)
return log_oom();
}
ProtectHostname t = protect_hostname_from_string(p ?: rvalue);
if (t < 0 || (t == PROTECT_HOSTNAME_NO && h))
return log_syntax_parse_error(unit, filename, line, 0, lvalue, rvalue);
c->protect_hostname = t;
free_and_replace(c->private_hostname, h);
return 1;
}
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