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Systemd/src/core/load-fragment.c

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/* SPDX-License-Identifier: LGPL-2.1+ */
/***
Copyright © 2012 Holger Hans Peter Freyther
***/
#include <errno.h>
#include <fcntl.h>
#include <linux/fs.h>
#include <linux/oom.h>
#if HAVE_SECCOMP
#include <seccomp.h>
#endif
#include <sched.h>
#include <string.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include "af-list.h"
#include "alloc-util.h"
#include "all-units.h"
#include "bus-error.h"
#include "bus-internal.h"
#include "bus-util.h"
#include "cap-list.h"
#include "capability-util.h"
#include "cgroup.h"
#include "conf-parser.h"
#include "cpu-set-util.h"
#include "env-util.h"
#include "errno-list.h"
#include "escape.h"
#include "fd-util.h"
#include "fs-util.h"
#include "hexdecoct.h"
#include "io-util.h"
#include "ioprio.h"
#include "journal-util.h"
#include "load-fragment.h"
#include "log.h"
#include "missing.h"
#include "mount-util.h"
#include "parse-util.h"
#include "path-util.h"
#include "process-util.h"
#if HAVE_SECCOMP
#include "seccomp-util.h"
#endif
#include "securebits.h"
#include "securebits-util.h"
#include "signal-util.h"
#include "socket-protocol-list.h"
#include "stat-util.h"
#include "string-util.h"
#include "strv.h"
#include "unit-name.h"
#include "unit-printf.h"
#include "user-util.h"
#include "web-util.h"
static int supported_socket_protocol_from_string(const char *s) {
int r;
if (isempty(s))
return IPPROTO_IP;
r = socket_protocol_from_name(s);
if (r < 0)
return -EINVAL;
if (!IN_SET(r, IPPROTO_UDPLITE, IPPROTO_SCTP))
return -EPROTONOSUPPORT;
return r;
}
DEFINE_CONFIG_PARSE(config_parse_socket_protocol, supported_socket_protocol_from_string, "Failed to parse socket protocol");
DEFINE_CONFIG_PARSE(config_parse_exec_secure_bits, secure_bits_from_string, "Failed to parse secure bits");
DEFINE_CONFIG_PARSE_ENUM(config_parse_collect_mode, collect_mode, CollectMode, "Failed to parse garbage collection mode");
DEFINE_CONFIG_PARSE_ENUM(config_parse_device_policy, cgroup_device_policy, CGroupDevicePolicy, "Failed to parse device policy");
DEFINE_CONFIG_PARSE_ENUM(config_parse_exec_keyring_mode, exec_keyring_mode, ExecKeyringMode, "Failed to parse keyring mode");
DEFINE_CONFIG_PARSE_ENUM(config_parse_exec_utmp_mode, exec_utmp_mode, ExecUtmpMode, "Failed to parse utmp mode");
DEFINE_CONFIG_PARSE_ENUM(config_parse_job_mode, job_mode, JobMode, "Failed to parse job mode");
DEFINE_CONFIG_PARSE_ENUM(config_parse_kill_mode, kill_mode, KillMode, "Failed to parse kill mode");
DEFINE_CONFIG_PARSE_ENUM(config_parse_notify_access, notify_access, NotifyAccess, "Failed to parse notify access specifier");
DEFINE_CONFIG_PARSE_ENUM(config_parse_protect_home, protect_home, ProtectHome, "Failed to parse protect home value");
DEFINE_CONFIG_PARSE_ENUM(config_parse_protect_system, protect_system, ProtectSystem, "Failed to parse protect system value");
DEFINE_CONFIG_PARSE_ENUM(config_parse_runtime_preserve_mode, exec_preserve_mode, ExecPreserveMode, "Failed to parse runtime directory preserve mode");
DEFINE_CONFIG_PARSE_ENUM(config_parse_service_type, service_type, ServiceType, "Failed to parse service type");
DEFINE_CONFIG_PARSE_ENUM(config_parse_service_restart, service_restart, ServiceRestart, "Failed to parse service restart specifier");
DEFINE_CONFIG_PARSE_ENUM(config_parse_socket_bind, socket_address_bind_ipv6_only_or_bool, SocketAddressBindIPv6Only, "Failed to parse bind IPv6 only value");
DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(config_parse_ip_tos, ip_tos, int, -1, "Failed to parse IP TOS value");
DEFINE_CONFIG_PARSE_PTR(config_parse_blockio_weight, cg_blkio_weight_parse, uint64_t, "Invalid block IO weight");
DEFINE_CONFIG_PARSE_PTR(config_parse_cg_weight, cg_weight_parse, uint64_t, "Invalid weight");
DEFINE_CONFIG_PARSE_PTR(config_parse_cpu_shares, cg_cpu_shares_parse, uint64_t, "Invalid CPU shares");
DEFINE_CONFIG_PARSE_PTR(config_parse_exec_mount_flags, mount_propagation_flags_from_string, unsigned long, "Failed to parse mount flag");
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;
const char *p;
assert(filename);
assert(lvalue);
assert(rvalue);
p = rvalue;
for (;;) {
_cleanup_free_ char *word = NULL, *k = NULL;
int r;
r = extract_first_word(&p, &word, NULL, EXTRACT_RETAIN_ESCAPE);
if (r == 0)
break;
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
break;
}
r = unit_name_printf(u, word, &k);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", word);
continue;
}
r = unit_add_dependency_by_name(u, d, k, true, UNIT_DEPENDENCY_FILE);
if (r < 0)
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to add dependency on %s, ignoring: %m", k);
}
return 0;
}
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;
Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(u);
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', ignoring: %m", rvalue);
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) {
Unit *u = userdata;
_cleanup_free_ char *k = NULL;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(u);
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', 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;
Unit *u = userdata;
int r;
bool fatal = ltype;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(u);
/* Let's not bother with anything that is too long */
if (strlen(rvalue) >= PATH_MAX) {
log_syntax(unit, LOG_ERR, filename, line, 0,
"%s value too long%s.",
lvalue, fatal ? "" : ", ignoring");
return fatal ? -ENAMETOOLONG : 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'%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_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;
Unit *u = userdata;
int r;
const char *p;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(u);
if (isempty(rvalue)) {
*x = strv_free(*x);
return 0;
}
for (p = rvalue;;) {
_cleanup_free_ char *word = NULL, *k = NULL;
r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES);
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_full_printf(u, word, &k);
if (r < 0) {
log_syntax(unit, LOG_ERR, 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_push(x, k);
if (r < 0)
return log_oom();
k = NULL;
}
}
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) {
_cleanup_free_ SocketPort *p = NULL;
SocketPort *tail;
Socket *s;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
s = SOCKET(data);
if (isempty(rvalue)) {
/* An empty assignment removes all ports */
socket_free_ports(s);
return 0;
}
p = new0(SocketPort, 1);
if (!p)
return log_oom();
if (ltype != SOCKET_SOCKET) {
_cleanup_free_ char *k = NULL;
r = unit_full_printf(UNIT(s), rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_ERR, 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;
free_and_replace(p->path, k);
p->type = ltype;
} else if (streq(lvalue, "ListenNetlink")) {
_cleanup_free_ char *k = NULL;
r = unit_full_printf(UNIT(s), rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_ERR, 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_ERR, 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_full_printf(UNIT(s), rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
return 0;
}
r = socket_address_parse_and_warn(&p->address, k);
if (r < 0) {
if (r != -EAFNOSUPPORT)
log_syntax(unit, LOG_ERR, 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_LOCAL && p->address.type == SOCK_SEQPACKET) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Address family not supported, ignoring: %s", rvalue);
return 0;
}
p->type = SOCKET_SOCKET;
}
p->fd = -1;
p->auxiliary_fds = NULL;
p->n_auxiliary_fds = 0;
p->socket = s;
LIST_FIND_TAIL(port, s->ports, tail);
LIST_INSERT_AFTER(port, s->ports, tail, p);
p = NULL;
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 = data;
int priority, r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
c->nice_set = false;
return 0;
}
r = parse_nice(rvalue, &priority);
if (r < 0) {
if (r == -ERANGE)
log_syntax(unit, LOG_ERR, filename, line, r, "Nice priority out of range, ignoring: %s", rvalue);
else
log_syntax(unit, LOG_ERR, 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 = data;
int oa, r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
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_ERR, filename, line, r, "OOM score adjust value out of range, ignoring: %s", rvalue);
else
log_syntax(unit, LOG_ERR, 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(
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 = data;
Unit *u = userdata;
const char *p;
bool semicolon;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(e);
e += ltype;
rvalue += strspn(rvalue, WHITESPACE);
if (isempty(rvalue)) {
/* An empty assignment resets the list */
*e = exec_command_free_list(*e);
return 0;
}
p = rvalue;
do {
_cleanup_free_ char *path = NULL, *firstword = NULL;
ExecCommandFlags flags = 0;
bool ignore = false, separate_argv0 = false;
_cleanup_free_ ExecCommand *nce = NULL;
_cleanup_strv_free_ char **n = NULL;
size_t nlen = 0, nbufsize = 0;
const char *f;
semicolon = false;
r = extract_first_word_and_warn(&p, &firstword, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE, unit, filename, line, rvalue);
if (r <= 0)
return 0;
f = firstword;
for (;;) {
/* We accept an absolute path as first argument. If it's prefixed with - and the path doesn't
* exist, we ignore it instead of erroring out; if it's prefixed with @, we allow overriding of
* argv[0]; if it's prefixed with +, it will be run with full privileges and no sandboxing; if
* it's prefixed with '!' we apply sandboxing, but do not change user/group credentials; if
* it's prefixed with '!!', then we apply user/group credentials if the kernel supports ambient
* capabilities -- if it doesn't we don't apply the credentials themselves, but do apply most
* other sandboxing, with some special exceptions for changing UID.
*
* The idea is that '!!' may be used to write services that can take benefit of systemd's
* UID/GID dropping if the kernel supports ambient creds, but provide an automatic fallback to
* privilege dropping within the daemon if the kernel does not offer that. */
if (*f == '-' && !(flags & EXEC_COMMAND_IGNORE_FAILURE)) {
flags |= EXEC_COMMAND_IGNORE_FAILURE;
ignore = true;
} else if (*f == '@' && !separate_argv0)
separate_argv0 = true;
else if (*f == '+' && !(flags & (EXEC_COMMAND_FULLY_PRIVILEGED|EXEC_COMMAND_NO_SETUID|EXEC_COMMAND_AMBIENT_MAGIC)))
flags |= EXEC_COMMAND_FULLY_PRIVILEGED;
else if (*f == '!' && !(flags & (EXEC_COMMAND_FULLY_PRIVILEGED|EXEC_COMMAND_NO_SETUID|EXEC_COMMAND_AMBIENT_MAGIC)))
flags |= EXEC_COMMAND_NO_SETUID;
else if (*f == '!' && !(flags & (EXEC_COMMAND_FULLY_PRIVILEGED|EXEC_COMMAND_AMBIENT_MAGIC))) {
flags &= ~EXEC_COMMAND_NO_SETUID;
flags |= EXEC_COMMAND_AMBIENT_MAGIC;
} else
break;
f++;
}
r = unit_full_printf(u, f, &path);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to resolve unit specifiers in '%s'%s: %m",
f, ignore ? ", ignoring" : "");
return ignore ? 0 : -ENOEXEC;
}
if (isempty(path)) {
/* First word is either "-" or "@" with no command. */
log_syntax(unit, 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, LOG_ERR, filename, line, 0,
"Executable name contains special characters%s: %s",
ignore ? ", ignoring" : "", path);
return ignore ? 0 : -ENOEXEC;
}
if (endswith(path, "/")) {
log_syntax(unit, LOG_ERR, filename, line, 0,
"Executable path specifies a directory%s: %s",
ignore ? ", ignoring" : "", path);
return ignore ? 0 : -ENOEXEC;
}
if (!path_is_absolute(path)) {
const char *prefix;
bool found = false;
if (!filename_is_valid(path)) {
log_syntax(unit, LOG_ERR, filename, line, 0,
"Neither a valid executable name nor an absolute path%s: %s",
ignore ? ", ignoring" : "", path);
return ignore ? 0 : -ENOEXEC;
}
/* Resolve a single-component name to a full path */
NULSTR_FOREACH(prefix, DEFAULT_PATH_NULSTR) {
_cleanup_free_ char *fullpath = NULL;
fullpath = strjoin(prefix, "/", path);
if (!fullpath)
return log_oom();
if (access(fullpath, F_OK) >= 0) {
free_and_replace(path, fullpath);
found = true;
break;
}
}
if (!found) {
log_syntax(unit, LOG_ERR, filename, line, 0,
"Executable \"%s\" not found in path \"%s\"%s",
path, DEFAULT_PATH, ignore ? ", ignoring" : "");
return ignore ? 0 : -ENOEXEC;
}
}
if (!separate_argv0) {
char *w = NULL;
if (!GREEDY_REALLOC(n, nbufsize, nlen + 2))
return log_oom();
w = strdup(path);
if (!w)
return log_oom();
n[nlen++] = w;
n[nlen] = NULL;
}
path_simplify(path, false);
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 += strspn(p, WHITESPACE);
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]))) {
char *w;
p += 2;
p += strspn(p, WHITESPACE);
if (!GREEDY_REALLOC(n, nbufsize, nlen + 2))
return log_oom();
w = strdup(";");
if (!w)
return log_oom();
n[nlen++] = w;
n[nlen] = NULL;
continue;
}
r = extract_first_word_and_warn(&p, &word, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE, unit, filename, line, rvalue);
if (r == 0)
break;
if (r < 0)
return ignore ? 0 : -ENOEXEC;
r = unit_full_printf(u, word, &resolved);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to resolve unit specifiers in %s%s: %m",
word, ignore ? ", ignoring" : "");
return ignore ? 0 : -ENOEXEC;
}
if (!GREEDY_REALLOC(n, nbufsize, nlen + 2))
return log_oom();
n[nlen++] = TAKE_PTR(resolved);
n[nlen] = NULL;
}
if (!n || !n[0]) {
log_syntax(unit, LOG_ERR, filename, line, 0,
"Empty executable name or zeroeth argument%s: %s",
ignore ? ", ignoring" : "", rvalue);
return ignore ? 0 : -ENOEXEC;
}
nce = new0(ExecCommand, 1);
if (!nce)
return log_oom();
nce->argv = TAKE_PTR(n);
nce->path = TAKE_PTR(path);
nce->flags = flags;
exec_command_append_list(e, nce);
/* Do not _cleanup_free_ these. */
nce = NULL;
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) {
Socket *s = data;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue) || streq(rvalue, "*")) {
s->bind_to_device = mfree(s->bind_to_device);
return 0;
}
if (!ifname_valid(rvalue)) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid interface name, ignoring: %s", rvalue);
return 0;
}
if (free_and_strdup(&s->bind_to_device, rvalue) < 0)
return log_oom();
return 0;
}
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 = data;
Unit *u = userdata;
const char *n;
ExecInput ei;
int r;
assert(data);
assert(filename);
assert(line);
assert(rvalue);
n = startswith(rvalue, "fd:");
if (n) {
_cleanup_free_ char *resolved = NULL;
r = unit_full_printf(u, n, &resolved);
if (r < 0)
return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s': %m", n);
if (isempty(resolved))
resolved = mfree(resolved);
else if (!fdname_is_valid(resolved)) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid file descriptor name: %s", resolved);
return -ENOEXEC;
}
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_full_printf(u, n, &resolved);
if (r < 0)
return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s': %m", n);
r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE | PATH_CHECK_FATAL, unit, filename, line, lvalue);
if (r < 0)
return -ENOEXEC;
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_ERR, filename, line, 0, "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 = data;
Unit *u = userdata;
size_t sz;
void *p;
int r;
assert(data);
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 = cunescape(rvalue, 0, &unescaped);
if (r < 0)
return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to decode C escaped text '%s': %m", rvalue);
r = unit_full_printf(u, unescaped, &resolved);
if (r < 0)
return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s': %m", unescaped);
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_ERR, 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 -E2BIG;
}
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 = data;
size_t sz;
void *q;
int r;
assert(data);
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, (size_t) -1, &p, &sz);
if (r < 0)
return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to decode base64 data, ignoring: %s", rvalue);
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_ERR, 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 -E2BIG;
}
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 = data;
Unit *u = userdata;
ExecOutput eo;
int r;
assert(data);
assert(filename);
assert(line);
assert(lvalue);
assert(rvalue);
n = startswith(rvalue, "fd:");
if (n) {
r = unit_full_printf(u, n, &resolved);
if (r < 0)
return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s: %m", n);
if (isempty(resolved))
resolved = mfree(resolved);
else if (!fdname_is_valid(resolved)) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid file descriptor name: %s", resolved);
return -ENOEXEC;
}
eo = EXEC_OUTPUT_NAMED_FD;
} else if ((n = startswith(rvalue, "file:"))) {
r = unit_full_printf(u, n, &resolved);
if (r < 0)
return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s: %m", n);
r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE | PATH_CHECK_FATAL, unit, filename, line, lvalue);
if (r < 0)
return -ENOEXEC;
eo = EXEC_OUTPUT_FILE;
} else if ((n = startswith(rvalue, "append:"))) {
r = unit_full_printf(u, n, &resolved);
if (r < 0)
return log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s: %m", n);
r = path_simplify_and_warn(resolved, PATH_CHECK_ABSOLUTE | PATH_CHECK_FATAL, unit, filename, line, lvalue);
if (r < 0)
return -ENOEXEC;
eo = EXEC_OUTPUT_FILE_APPEND;
} else {
eo = exec_output_from_string(rvalue);
if (eo < 0) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse output specifier, ignoring: %s", rvalue);
return 0;
}
}
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 = data;
int x;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
c->ioprio_set = false;
c->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 0);
return 0;
}
x = ioprio_class_from_string(rvalue);
if (x < 0) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse IO scheduling class, ignoring: %s", rvalue);
return 0;
}
c->ioprio = IOPRIO_PRIO_VALUE(x, IOPRIO_PRIO_DATA(c->ioprio));
c->ioprio_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 = data;
int i, r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
c->ioprio_set = false;
c->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 0);
return 0;
}
r = ioprio_parse_priority(rvalue, &i);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse IO priority, ignoring: %s", rvalue);
return 0;
}
c->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_PRIO_CLASS(c->ioprio), i);
c->ioprio_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 = data;
int x;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
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_ERR, filename, line, 0, "Failed to parse CPU scheduling policy, ignoring: %s", rvalue);
return 0;
}
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(x), sched_get_priority_max(x));
c->cpu_sched_set = true;
return 0;
}
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 = data;
int i, min, max, r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
r = safe_atoi(rvalue, &i);
if (r < 0) {
log_syntax(unit, LOG_ERR, 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 */
min = sched_get_priority_min(c->cpu_sched_policy);
max = sched_get_priority_max(c->cpu_sched_policy);
if (i < min || i > max) {
log_syntax(unit, LOG_ERR, 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_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 = data;
_cleanup_cpu_free_ cpu_set_t *cpuset = NULL;
int ncpus;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
ncpus = parse_cpu_set_and_warn(rvalue, &cpuset, unit, filename, line, lvalue);
if (ncpus < 0)
return ncpus;
if (ncpus == 0) {
/* An empty assignment resets the CPU list */
c->cpuset = cpu_set_mfree(c->cpuset);
c->cpuset_ncpus = 0;
return 0;
}
if (!c->cpuset) {
c->cpuset = TAKE_PTR(cpuset);
c->cpuset_ncpus = (unsigned) ncpus;
return 0;
}
if (c->cpuset_ncpus < (unsigned) ncpus) {
CPU_OR_S(CPU_ALLOC_SIZE(c->cpuset_ncpus), cpuset, c->cpuset, cpuset);
CPU_FREE(c->cpuset);
c->cpuset = TAKE_PTR(cpuset);
c->cpuset_ncpus = (unsigned) ncpus;
return 0;
}
CPU_OR_S(CPU_ALLOC_SIZE((unsigned) ncpus), c->cpuset, c->cpuset, cpuset);
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 = data;
uint64_t sum = 0, initial = 0;
bool invert = false;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (rvalue[0] == '~') {
invert = true;
rvalue++;
}
if (streq(lvalue, "CapabilityBoundingSet"))
initial = CAP_ALL; /* initialized to all bits on */
/* else "AmbientCapabilities" initialized to all bits off */
r = capability_set_from_string(rvalue, &sum);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse %s= specifier '%s', ignoring: %m", lvalue, rvalue);
return 0;
}
if (sum == 0 || *capability_set == initial)
/* "", "~" or uninitialized data -> replace */
*capability_set = invert ? ~sum : sum;
else {
/* previous data -> merge */
if (invert)
*capability_set &= ~sum;
else
*capability_set |= sum;
}
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 = data;
Unit *u = userdata;
bool ignore;
char *k;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
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, 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 = data;
Unit *u = userdata;
bool ignore;
char *k;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
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, 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 = data;
Unit *u = userdata;
bool ignore;
char *k;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
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, 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) {
Timer *t = data;
usec_t usec = 0;
TimerValue *v;
TimerBase b;
_cleanup_(calendar_spec_freep) CalendarSpec *c = NULL;
Unit *u = userdata;
_cleanup_free_ char *k = NULL;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
/* Empty assignment resets list */
timer_free_values(t);
return 0;
}
b = timer_base_from_string(lvalue);
if (b < 0) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse timer base, ignoring: %s", lvalue);
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', ignoring: %m", rvalue);
return 0;
}
if (b == TIMER_CALENDAR) {
if (calendar_spec_from_string(k, &c) < 0) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse calendar specification, ignoring: %s", k);
return 0;
}
} else
if (parse_sec(k, &usec) < 0) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse timer value, ignoring: %s", k);
return 0;
}
v = new0(TimerValue, 1);
if (!v)
return log_oom();
v->base = b;
v->value = usec;
v->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 = data;
UnitType type;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (!hashmap_isempty(u->dependencies[UNIT_TRIGGERS])) {
log_syntax(unit, LOG_ERR, 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_ERR, 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_ERR, filename, line, 0, "Unit type not valid, ignoring: %s", rvalue);
return 0;
}
if (unit_has_name(u, p)) {
log_syntax(unit, LOG_ERR, 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_ERR, 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 = data;
PathSpec *s;
PathType b;
_cleanup_free_ char *k = NULL;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
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_ERR, filename, line, 0, "Failed to parse path type, ignoring: %s", lvalue);
return 0;
}
r = unit_full_printf(UNIT(p), rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_ERR, 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 = -1;
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 = data;
Unit *x;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
r = unit_name_printf(UNIT(s), rvalue, &p);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s: %m", rvalue);
return -ENOEXEC;
}
if (!endswith(p, ".service")) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Unit must be of type service: %s", rvalue);
return -ENOEXEC;
}
r = manager_load_unit(UNIT(s)->manager, p, NULL, &error, &x);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to load unit %s: %s", rvalue, bus_error_message(&error, r));
return -ENOEXEC;
}
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 = data;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
s->fdname = mfree(s->fdname);
return 0;
}
r = unit_full_printf(UNIT(s), rvalue, &p);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", rvalue);
return 0;
}
if (!fdname_is_valid(p)) {
log_syntax(unit, LOG_ERR, 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 = data;
const char *p;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
p = rvalue;
for (;;) {
_cleanup_free_ char *word = NULL, *k = NULL;
r = extract_first_word(&p, &word, NULL, 0);
if (r == 0)
break;
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Trailing garbage in sockets, ignoring: %s", rvalue);
break;
}
r = unit_name_printf(UNIT(s), word, &k);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in '%s', ignoring: %m", word);
continue;
}
if (!endswith(k, ".socket")) {
log_syntax(unit, LOG_ERR, 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_ERR, 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_ERR, filename, line, r, "Failed to add dependency on %s, ignoring: %m", k);
}
return 0;
}
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;
Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(u);
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, ignoring: %m", rvalue);
return 0;
}
if (!service_name_is_valid(k)) {
log_syntax(unit, LOG_ERR, 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 = userdata;
usec_t usec;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(s);
/* 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_ERR, 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_sec_fix_0(
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;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(usec);
/* This is pretty much like config_parse_sec(), except that this treats a time of 0 as infinity, for
* compatibility with older versions of systemd where 0 instead of infinity was used as indicator to turn off a
* timeout. */
r = parse_sec_fix_0(rvalue, usec);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse %s= parameter, ignoring: %s", lvalue, rvalue);
return 0;
}
return 0;
}
int config_parse_user_group(
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;
Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(u);
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_or_id(k)) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid user/group name or numeric ID: %s", k);
return -ENOEXEC;
}
return free_and_replace(*user, k);
}
int config_parse_user_group_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) {
char ***users = data;
Unit *u = userdata;
const char *p = rvalue;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(u);
if (isempty(rvalue)) {
*users = strv_free(*users);
return 0;
}
for (;;) {
_cleanup_free_ char *word = NULL, *k = NULL;
r = extract_first_word(&p, &word, NULL, 0);
if (r == 0)
break;
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Invalid syntax: %s", rvalue);
return -ENOEXEC;
}
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_or_id(k)) {
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;
}
return 0;
}
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 = data;
Unit *u = userdata;
bool missing_ok;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(c);
assert(u);
if (isempty(rvalue)) {
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_full_printf(u, rvalue, &k);
if (r < 0) {
log_syntax(unit, 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 = data;
Unit *u = userdata;
_cleanup_free_ char *n = NULL;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
/* Empty assignment frees the list */
*env = strv_free(*env);
return 0;
}
r = unit_full_printf(u, rvalue, &n);
if (r < 0) {
log_syntax(unit, LOG_ERR, 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) {
Unit *u = userdata;
char ***env = data;
const char *p;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
*env = strv_free(*env);
return 0;
}
for (p = rvalue;; ) {
_cleanup_free_ char *word = NULL, *k = NULL;
r = extract_first_word(&p, &word, NULL, EXTRACT_CUNESCAPE|EXTRACT_QUOTES);
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;
}
if (u) {
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, ignoring: %m", word);
continue;
}
} else
k = TAKE_PTR(word);
if (!env_assignment_is_valid(k)) {
log_syntax(unit, LOG_ERR, filename, line, 0,
"Invalid environment assignment, ignoring: %s", k);
continue;
}
r = strv_env_replace(env, k);
if (r < 0)
return log_oom();
k = NULL;
}
}
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) {
_cleanup_strv_free_ char **n = NULL;
size_t nlen = 0, nbufsize = 0;
char*** passenv = data;
const char *p = rvalue;
Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
*passenv = strv_free(*passenv);
return 0;
}
for (;;) {
_cleanup_free_ char *word = NULL, *k = NULL;
r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES);
if (r == 0)
break;
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Trailing garbage in %s, ignoring: %s", lvalue, rvalue);
break;
}
if (u) {
r = unit_full_printf(u, word, &k);
if (r < 0) {
log_syntax(unit, LOG_ERR, 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_ERR, filename, line, 0,
"Invalid environment name for %s, ignoring: %s", lvalue, k);
continue;
}
if (!GREEDY_REALLOC(n, nbufsize, nlen + 2))
return log_oom();
n[nlen++] = TAKE_PTR(k);
n[nlen] = NULL;
}
if (n) {
r = strv_extend_strv(passenv, n, true);
if (r < 0)
return r;
}
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) {
_cleanup_strv_free_ char **n = NULL;
size_t nlen = 0, nbufsize = 0;
char*** unsetenv = data;
const char *p = rvalue;
Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
*unsetenv = strv_free(*unsetenv);
return 0;
}
for (;;) {
_cleanup_free_ char *word = NULL, *k = NULL;
r = extract_first_word(&p, &word, NULL, EXTRACT_CUNESCAPE|EXTRACT_QUOTES);
if (r == 0)
break;
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Trailing garbage in %s, ignoring: %s", lvalue, rvalue);
break;
}
if (u) {
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, ignoring: %m", word);
continue;
}
} else
k = TAKE_PTR(word);
if (!env_assignment_is_valid(k) && !env_name_is_valid(k)) {
log_syntax(unit, LOG_ERR, filename, line, 0,
"Invalid environment name or assignment %s, ignoring: %s", lvalue, k);
continue;
}
if (!GREEDY_REALLOC(n, nbufsize, nlen + 2))
return log_oom();
n[nlen++] = TAKE_PTR(k);
n[nlen] = NULL;
}
if (n) {
r = strv_extend_strv(unsetenv, n, true);
if (r < 0)
return r;
}
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 = data;
Unit *u = userdata;
const char *p = rvalue;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(c);
if (isempty(rvalue)) {
exec_context_free_log_extra_fields(c);
return 0;
}
for (;;) {
_cleanup_free_ char *word = NULL, *k = NULL;
struct iovec *t;
const char *eq;
r = extract_first_word(&p, &word, NULL, EXTRACT_CUNESCAPE|EXTRACT_QUOTES);
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_full_printf(u, word, &k);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", word);
continue;
}
eq = strchr(k, '=');
if (!eq) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Log field lacks '=' character, ignoring: %s", k);
continue;
}
if (!journal_field_valid(k, eq-k, false)) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Log field name is invalid, ignoring: %s", k);
continue;
}
t = reallocarray(c->log_extra_fields, c->n_log_extra_fields+1, sizeof(struct iovec));
if (!t)
return log_oom();
c->log_extra_fields = t;
c->log_extra_fields[c->n_log_extra_fields++] = IOVEC_MAKE_STRING(k);
k = NULL;
}
}
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 = data, *c;
ConditionType t = ltype;
bool trigger, negate;
Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
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_full_printf(u, rvalue, &p);
if (r < 0) {
log_syntax(unit, LOG_ERR, 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 = data, *c;
ConditionType t = ltype;
bool trigger, negate;
Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
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_full_printf(u, rvalue, &s);
if (r < 0) {
log_syntax(unit, LOG_ERR, 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_condition_null(
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) {
Condition **list = data, *c;
bool trigger, negate;
int b;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
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++;
b = parse_boolean(rvalue);
if (b < 0) {
log_syntax(unit, LOG_ERR, filename, line, b, "Failed to parse boolean value in condition, ignoring: %s", rvalue);
return 0;
}
if (!b)
negate = !negate;
c = condition_new(CONDITION_NULL, NULL, trigger, negate);
if (!c)
return log_oom();
LIST_PREPEND(conditions, *list, c);
return 0;
}
int config_parse_unit_requires_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) {
const char *p = rvalue;
Unit *u = userdata;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
for (;;) {
_cleanup_free_ char *word = NULL, *resolved = NULL;
r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES);
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_full_printf(u, word, &resolved);
if (r < 0) {
log_syntax(unit, LOG_ERR, 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_require_mounts_for(u, resolved, UNIT_DEPENDENCY_FILE);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to add required 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 = userdata;
int r;
char **a, **b;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(u);
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_ERR, filename, line, 0, "Invalid URL, ignoring: %s", *a);
free(*a);
}
}
if (b)
*b = NULL;
return r;
}
#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;
Unit *u = userdata;
bool invert = false;
const char *p;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(u);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
c->syscall_filter = hashmap_free(c->syscall_filter);
c->syscall_whitelist = 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_whitelist = false;
else {
/* Allow nothing but the ones listed */
c->syscall_whitelist = true;
/* Accept default syscalls if we are on a whitelist */
r = seccomp_parse_syscall_filter("@default", -1, c->syscall_filter, SECCOMP_PARSE_WHITELIST);
if (r < 0)
return r;
}
}
p = rvalue;
for (;;) {
_cleanup_free_ char *word = NULL, *name = NULL;
int num;
r = extract_first_word(&p, &word, NULL, 0);
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 = 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;
}
r = seccomp_parse_syscall_filter_full(name, num, c->syscall_filter,
SECCOMP_PARSE_LOG|SECCOMP_PARSE_PERMISSIVE|(invert ? SECCOMP_PARSE_INVERT : 0)|(c->syscall_whitelist ? SECCOMP_PARSE_WHITELIST : 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) {
const char *p = rvalue;
Set **archs = data;
int r;
if (isempty(rvalue)) {
*archs = set_free(*archs);
return 0;
}
r = set_ensure_allocated(archs, NULL);
if (r < 0)
return log_oom();
for (;;) {
_cleanup_free_ char *word = NULL;
uint32_t a;
r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES);
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 = seccomp_arch_from_string(word, &a);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to parse system call architecture \"%s\", ignoring: %m", word);
continue;
}
r = set_put(*archs, 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)) {
/* Empty assignment resets to KILL */
c->syscall_errno = 0;
return 0;
}
e = parse_errno(rvalue);
if (e <= 0) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse 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;
const char *p;
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_whitelist = false;
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_whitelist = !invert;
}
for (p = rvalue;;) {
_cleanup_free_ char *word = NULL;
int af;
r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES);
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;
}
af = af_from_name(word);
if (af <= 0) {
log_syntax(unit, LOG_ERR, filename, line, 0,
"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_whitelist) {
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));
}
}
int config_parse_restrict_namespaces(
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;
unsigned long flags;
bool invert = false;
int r;
if (isempty(rvalue)) {
/* Reset to the default. */
c->restrict_namespaces = NAMESPACE_FLAGS_INITIAL;
return 0;
}
/* Boolean parameter ignores the previous settings */
r = parse_boolean(rvalue);
if (r > 0) {
c->restrict_namespaces = 0;
return 0;
} else if (r == 0) {
c->restrict_namespaces = NAMESPACE_FLAGS_ALL;
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, &flags);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse namespace type string, ignoring: %s", rvalue);
return 0;
}
if (c->restrict_namespaces == NAMESPACE_FLAGS_INITIAL)
/* Initial assignment. Just set the value. */
c->restrict_namespaces = invert ? (~flags) & NAMESPACE_FLAGS_ALL : flags;
else
/* Merge the value with the previous one. */
SET_FLAG(c->restrict_namespaces, flags, !invert);
return 0;
}
#endif
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) {
_cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_free_ char *k = NULL;
Unit *u = userdata, *slice = NULL;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(u);
r = unit_name_printf(u, rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_ERR, 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_ERR, 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_ERR, 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_permille_unbounded(rvalue);
if (r <= 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Invalid CPU quota '%s', ignoring.", rvalue);
return 0;
}
c->cpu_quota_per_sec_usec = ((usec_t) r * USEC_PER_SEC) / 1000U;
return 0;
}
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) && !streq(rvalue, "infinity")) {
r = parse_permille(rvalue);
if (r < 0) {
r = parse_size(rvalue, 1024, &bytes);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Invalid memory limit '%s', ignoring: %m", rvalue);
return 0;
}
} else
bytes = physical_memory_scale(r, 1000U);
if (bytes >= UINT64_MAX ||
(bytes <= 0 && !streq(lvalue, "MemorySwapMax"))) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Memory limit '%s' out of range, ignoring.", rvalue);
return 0;
}
}
if (streq(lvalue, "MemoryMin"))
c->memory_min = bytes;
else if (streq(lvalue, "MemoryLow"))
c->memory_low = bytes;
else if (streq(lvalue, "MemoryHigh"))
c->memory_high = bytes;
else if (streq(lvalue, "MemoryMax"))
c->memory_max = bytes;
else if (streq(lvalue, "MemorySwapMax"))
c->memory_swap_max = bytes;
else if (streq(lvalue, "MemoryLimit"))
c->memory_limit = bytes;
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) {
uint64_t *tasks_max = data, v;
Unit *u = userdata;
int r;
if (isempty(rvalue)) {
*tasks_max = u ? u->manager->default_tasks_max : UINT64_MAX;
return 0;
}
if (streq(rvalue, "infinity")) {
*tasks_max = CGROUP_LIMIT_MAX;
return 0;
}
r = parse_permille(rvalue);
if (r < 0) {
r = safe_atou64(rvalue, &v);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Invalid maximum tasks value '%s', ignoring: %m", rvalue);
return 0;
}
} else
v = system_tasks_max_scale(r, 1000U);
if (v <= 0 || v >= UINT64_MAX) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Maximum tasks value '%s' out of range, ignoring.", rvalue);
return 0;
}
*tasks_max = 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_ERR, 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. */
if (isempty(rvalue)) {
/* An empty string resets controllers and set Delegate=yes. */
c->delegate = true;
c->delegate_controllers = 0;
return 0;
}
r = parse_boolean(rvalue);
if (r < 0) {
const char *p = rvalue;
CGroupMask mask = 0;
for (;;) {
_cleanup_free_ char *word = NULL;
CGroupController cc;
r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES);
if (r == 0)
break;
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Invalid syntax, ignoring: %s", rvalue);
return 0;
}
cc = cgroup_controller_from_string(word);
if (cc < 0) {
log_syntax(unit, LOG_ERR, 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_ALL;
} else {
c->delegate = false;
c->delegate_controllers = 0;
}
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;
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_QUOTES);
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) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Failed to extract device path and rights from '%s', ignoring.", rvalue);
return 0;
}
r = unit_full_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(resolved, "block-") && !startswith(resolved, "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_ERR, filename, line, 0, "Invalid device node path '%s', ignoring.", resolved);
return 0;
}
}
if (!isempty(p) && !in_charset(p, "rwm")) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid device rights '%s', ignoring.", p);
return 0;
}
return cgroup_add_device_allow(c, resolved, p);
}
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 = rvalue;
uint64_t u;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
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_QUOTES);
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 || isempty(p)) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Failed to extract device path and weight from '%s', ignoring.", rvalue);
return 0;
}
r = unit_full_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_ERR, 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_PREPEND(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 = rvalue;
usec_t usec;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
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_QUOTES);
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 || isempty(p)) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Failed to extract device path and latency from '%s', ignoring.", rvalue);
return 0;
}
r = unit_full_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 (parse_sec(p, &usec) < 0) {
log_syntax(unit, LOG_ERR, filename, line, 0, "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_PREPEND(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, *t;
CGroupContext *c = data;
CGroupIOLimitType type;
const char *p = rvalue;
uint64_t num;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
type = cgroup_io_limit_type_from_string(lvalue);
assert(type >= 0);
if (isempty(rvalue)) {
LIST_FOREACH(device_limits, l, c->io_device_limits)
l->limits[type] = cgroup_io_limit_defaults[type];
return 0;
}
r = extract_first_word(&p, &path, NULL, EXTRACT_QUOTES);
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 || isempty(p)) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Failed to extract device node and bandwidth from '%s', ignoring.", rvalue);
return 0;
}
r = unit_full_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("infinity", p))
num = CGROUP_LIMIT_MAX;
else {
r = parse_size(p, 1000, &num);
if (r < 0 || num <= 0) {
log_syntax(unit, LOG_ERR, 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) {
CGroupIOLimitType ttype;
l = new0(CGroupIODeviceLimit, 1);
if (!l)
return log_oom();
l->path = TAKE_PTR(resolved);
for (ttype = 0; ttype < _CGROUP_IO_LIMIT_TYPE_MAX; ttype++)
l->limits[ttype] = cgroup_io_limit_defaults[ttype];
LIST_PREPEND(device_limits, c->io_device_limits, l);
}
l->limits[type] = num;
return 0;
}
int config_parse_blockio_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;
CGroupBlockIODeviceWeight *w;
CGroupContext *c = data;
const char *p = rvalue;
uint64_t u;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
while (c->blockio_device_weights)
cgroup_context_free_blockio_device_weight(c, c->blockio_device_weights);
return 0;
}
r = extract_first_word(&p, &path, NULL, EXTRACT_QUOTES);
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 || isempty(p)) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Failed to extract device node and weight from '%s', ignoring.", rvalue);
return 0;
}
r = unit_full_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_blkio_weight_parse(p, &u);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Invalid block IO weight '%s', ignoring: %m", p);
return 0;
}
assert(u != CGROUP_BLKIO_WEIGHT_INVALID);
w = new0(CGroupBlockIODeviceWeight, 1);
if (!w)
return log_oom();
w->path = TAKE_PTR(resolved);
w->weight = u;
LIST_PREPEND(device_weights, c->blockio_device_weights, w);
return 0;
}
int config_parse_blockio_bandwidth(
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;
CGroupBlockIODeviceBandwidth *b = NULL, *t;
CGroupContext *c = data;
const char *p = rvalue;
uint64_t bytes;
bool read;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
read = streq("BlockIOReadBandwidth", lvalue);
if (isempty(rvalue)) {
LIST_FOREACH(device_bandwidths, b, c->blockio_device_bandwidths) {
b->rbps = CGROUP_LIMIT_MAX;
b->wbps = CGROUP_LIMIT_MAX;
}
return 0;
}
r = extract_first_word(&p, &path, NULL, EXTRACT_QUOTES);
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 || isempty(p)) {
log_syntax(unit, LOG_WARNING, filename, line, 0,
"Failed to extract device node and bandwidth from '%s', ignoring.", rvalue);
return 0;
}
r = unit_full_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_size(p, 1000, &bytes);
if (r < 0 || bytes <= 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Invalid Block IO Bandwidth '%s', ignoring.", p);
return 0;
}
LIST_FOREACH(device_bandwidths, t, c->blockio_device_bandwidths) {
if (path_equal(resolved, t->path)) {
b = t;
break;
}
}
if (!t) {
b = new0(CGroupBlockIODeviceBandwidth, 1);
if (!b)
return log_oom();
b->path = TAKE_PTR(resolved);
b->rbps = CGROUP_LIMIT_MAX;
b->wbps = CGROUP_LIMIT_MAX;
LIST_PREPEND(device_bandwidths, c->blockio_device_bandwidths, b);
}
if (read)
b->rbps = bytes;
else
b->wbps = bytes;
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_ERR, 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) {
char***rt = data;
Unit *u = userdata;
const char *p;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
*rt = strv_free(*rt);
return 0;
}
for (p = rvalue;;) {
_cleanup_free_ char *word = NULL, *k = NULL;
r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES);
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_ERR, filename, line, r,
"Failed to resolve unit specifiers in \"%s\", ignoring: %m", word);
continue;
}
r = path_simplify_and_warn(k, PATH_CHECK_RELATIVE, unit, filename, line, lvalue);
if (r < 0)
continue;
if (path_startswith(k, "private")) {
log_syntax(unit, LOG_ERR, filename, line, 0,
"%s= path can't be 'private', ingoring assignment: %s", lvalue, word);
continue;
}
r = strv_push(rt, k);
if (r < 0)
return log_oom();
k = NULL;
}
}
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) {
size_t l;
const char *word, *state;
int r;
ExitStatusSet *status_set = data;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
/* Empty assignment resets the list */
if (isempty(rvalue)) {
exit_status_set_free(status_set);
return 0;
}
FOREACH_WORD(word, l, rvalue, state) {
_cleanup_free_ char *temp;
int val;
Set **set;
temp = strndup(word, l);
if (!temp)
return log_oom();
r = safe_atoi(temp, &val);
if (r < 0) {
val = signal_from_string(temp);
if (val <= 0) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse value, ignoring: %s", word);
continue;
}
set = &status_set->signal;
} else {
if (val < 0 || val > 255) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Value %d is outside range 0-255, ignoring", val);
continue;
}
set = &status_set->status;
}
r = set_ensure_allocated(set, NULL);
if (r < 0)
return log_oom();
r = set_put(*set, INT_TO_PTR(val));
if (r < 0)
return log_oom();
}
if (!isempty(state))
log_syntax(unit, LOG_ERR, filename, line, 0, "Trailing garbage, ignoring.");
return 0;
}
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) {
Unit *u = userdata;
char*** sv = data;
const char *p = rvalue;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
*sv = strv_free(*sv);
return 0;
}
for (;;) {
_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_QUOTES);
if (r == 0)
break;
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract first word, ignoring: %s", rvalue);
return 0;
}
w = word;
if (startswith(w, "-")) {
ignore_enoent = true;
w++;
}
if (startswith(w, "+")) {
shall_prefix = true;
w++;
}
r = unit_full_printf(u, w, &resolved);
if (r < 0) {
log_syntax(unit, LOG_ERR, 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) {
Unit *u = userdata;
ExecContext *c = data;
const char *p = rvalue;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
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 (;;) {
_cleanup_free_ char *word = NULL, *path = NULL, *resolved = NULL;
const char *w;
r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES);
if (r == 0)
return 0;
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract first word, ignoring: %s", rvalue);
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_ERR, filename, line, r, "Failed to extract first word, ignoring: %s", word);
continue;
}
if (r == 0) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid syntax, ignoring: %s", word);
continue;
}
r = unit_full_printf(u, path, &resolved);
if (r < 0) {
log_syntax(unit, LOG_ERR, 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 = data;
Unit *u = userdata;
const char *p;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
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;
}
p = rvalue;
for (;;) {
_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_QUOTES|EXTRACT_DONT_COALESCE_SEPARATORS);
if (r == 0)
break;
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse %s, ignoring: %s", lvalue, rvalue);
return 0;
}
r = unit_full_printf(u, source, &sresolved);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to resolved 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_QUOTES|EXTRACT_DONT_COALESCE_SEPARATORS);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse %s, ignoring: %s", lvalue, rvalue);
return 0;
}
if (r == 0) {
log_syntax(unit, LOG_ERR, filename, line, 0, "Missing argument after ':', ignoring: %s", s);
continue;
}
r = unit_full_printf(u, destination, &dresolved);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to resolved 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_QUOTES);
if (r == -ENOMEM)
return log_oom();
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse %s: %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_ERR, 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_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 = data;
usec_t usec;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(u);
r = parse_sec_fix_0(rvalue, &usec);
if (r < 0) {
log_syntax(unit, LOG_ERR, 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 = data;
usec_t usec;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(u);
r = parse_sec_fix_0(rvalue, &usec);
if (r < 0) {
log_syntax(unit, LOG_ERR, 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) {
Manager *m = NULL;
EmergencyAction *x = data;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (unit)
m = ((Unit*) userdata)->manager;
else
m = data;
r = parse_emergency_action(rvalue, MANAGER_IS_SYSTEM(m), x);
if (r < 0) {
if (r == -EOPNOTSUPP)
log_syntax(unit, LOG_ERR, filename, line, r,
"%s= specified as %s mode action, ignoring: %s",
lvalue, MANAGER_IS_SYSTEM(m) ? "user" : "system", rvalue);
else
log_syntax(unit, LOG_ERR, filename, line, r,
"Failed to parse %s=, ignoring: %s", lvalue, rvalue);
return 0;
}
return 0;
}
#define FOLLOW_MAX 8
static int open_follow(char **filename, FILE **_f, Set *names, char **_final) {
char *id = NULL;
unsigned c = 0;
int fd, r;
FILE *f;
assert(filename);
assert(*filename);
assert(_f);
assert(names);
/* This will update the filename pointer if the loaded file is
* reached by a symlink. The old string will be freed. */
for (;;) {
char *target, *name;
if (c++ >= FOLLOW_MAX)
return -ELOOP;
path_simplify(*filename, false);
/* Add the file name we are currently looking at to
* the names of this unit, but only if it is a valid
* unit name. */
name = basename(*filename);
if (unit_name_is_valid(name, UNIT_NAME_ANY)) {
id = set_get(names, name);
if (!id) {
id = strdup(name);
if (!id)
return -ENOMEM;
r = set_consume(names, id);
if (r < 0)
return r;
}
}
/* Try to open the file name, but don't if its a symlink */
fd = open(*filename, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW);
if (fd >= 0)
break;
if (errno != ELOOP)
return -errno;
/* Hmm, so this is a symlink. Let's read the name, and follow it manually */
r = readlink_and_make_absolute(*filename, &target);
if (r < 0)
return r;
free_and_replace(*filename, target);
}
f = fdopen(fd, "re");
if (!f) {
safe_close(fd);
return -errno;
}
*_f = f;
*_final = id;
return 0;
}
static int merge_by_names(Unit **u, Set *names, const char *id) {
char *k;
int r;
assert(u);
assert(*u);
assert(names);
/* Let's try to add in all symlink names we found */
while ((k = set_steal_first(names))) {
/* 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 */
/* If the symlink name we are looking at is unit template, then
we must search for instance of this template */
if (unit_name_is_valid(k, UNIT_NAME_TEMPLATE) && (*u)->instance) {
_cleanup_free_ char *instance = NULL;
r = unit_name_replace_instance(k, (*u)->instance, &instance);
if (r < 0)
return r;
other = manager_get_unit((*u)->manager, instance);
} else
other = manager_get_unit((*u)->manager, k);
free(k);
if (other) {
r = unit_merge(other, *u);
if (r >= 0) {
*u = other;
return merge_by_names(u, names, NULL);
}
}
return r;
}
if (id == k)
unit_choose_id(*u, id);
free(k);
}
return 0;
}
static int load_from_path(Unit *u, const char *path) {
_cleanup_set_free_free_ Set *symlink_names = NULL;
_cleanup_fclose_ FILE *f = NULL;
_cleanup_free_ char *filename = NULL;
char *id = NULL;
Unit *merged;
struct stat st;
int r;
assert(u);
assert(path);
symlink_names = set_new(&string_hash_ops);
if (!symlink_names)
return -ENOMEM;
if (path_is_absolute(path)) {
filename = strdup(path);
if (!filename)
return -ENOMEM;
r = open_follow(&filename, &f, symlink_names, &id);
if (r < 0) {
filename = mfree(filename);
if (r != -ENOENT)
return r;
}
} else {
char **p;
STRV_FOREACH(p, u->manager->lookup_paths.search_path) {
/* Instead of opening the path right away, we manually
* follow all symlinks and add their name to our unit
* name set while doing so */
filename = path_make_absolute(path, *p);
if (!filename)
return -ENOMEM;
if (u->manager->unit_path_cache &&
!set_get(u->manager->unit_path_cache, filename))
r = -ENOENT;
else
r = open_follow(&filename, &f, symlink_names, &id);
if (r >= 0)
break;
filename = mfree(filename);
/* ENOENT means that the file is missing or is a dangling symlink.
* ENOTDIR means that one of paths we expect to be is a directory
* is not a directory, we should just ignore that.
* EACCES means that the directory or file permissions are wrong.
*/
if (r == -EACCES)
log_debug_errno(r, "Cannot access \"%s\": %m", filename);
else if (!IN_SET(r, -ENOENT, -ENOTDIR))
return r;
/* Empty the symlink names for the next run */
set_clear_free(symlink_names);
}
}
if (!filename)
/* Hmm, no suitable file found? */
return 0;
if (!unit_type_may_alias(u->type) && set_size(symlink_names) > 1) {
log_unit_warning(u, "Unit type of %s does not support alias names, refusing loading via symlink.", u->id);
return -ELOOP;
}
merged = u;
r = merge_by_names(&merged, symlink_names, id);
if (r < 0)
return r;
if (merged != u) {
u->load_state = UNIT_MERGED;
return 0;
}
if (fstat(fileno(f), &st) < 0)
return -errno;
if (null_or_empty(&st)) {
u->load_state = UNIT_MASKED;
u->fragment_mtime = 0;
} else {
u->load_state = UNIT_LOADED;
u->fragment_mtime = timespec_load(&st.st_mtim);
/* Now, parse the file contents */
r = config_parse(u->id, filename, f,
UNIT_VTABLE(u)->sections,
config_item_perf_lookup, load_fragment_gperf_lookup,
CONFIG_PARSE_ALLOW_INCLUDE, u);
if (r < 0)
return r;
}
free_and_replace(u->fragment_path, filename);
if (u->source_path) {
if (stat(u->source_path, &st) >= 0)
u->source_mtime = timespec_load(&st.st_mtim);
else
u->source_mtime = 0;
}
return 0;
}
int unit_load_fragment(Unit *u) {
int r;
Iterator i;
const char *t;
assert(u);
assert(u->load_state == UNIT_STUB);
assert(u->id);
if (u->transient) {
u->load_state = UNIT_LOADED;
return 0;
}
/* First, try to find the unit under its id. We always look
* for unit files in the default directories, to make it easy
* to override things by placing things in /etc/systemd/system */
r = load_from_path(u, u->id);
if (r < 0)
return r;
/* Try to find an alias we can load this with */
if (u->load_state == UNIT_STUB) {
SET_FOREACH(t, u->names, i) {
if (t == u->id)
continue;
r = load_from_path(u, t);
if (r < 0)
return r;
if (u->load_state != UNIT_STUB)
break;
}
}
/* And now, try looking for it under the suggested (originally linked) path */
if (u->load_state == UNIT_STUB && u->fragment_path) {
r = load_from_path(u, u->fragment_path);
if (r < 0)
return r;
if (u->load_state == UNIT_STUB)
/* Hmm, this didn't work? Then let's get rid
* of the fragment path stored for us, so that
* we don't point to an invalid location. */
u->fragment_path = mfree(u->fragment_path);
}
/* Look for a template */
if (u->load_state == UNIT_STUB && u->instance) {
_cleanup_free_ char *k = NULL;
r = unit_name_template(u->id, &k);
if (r < 0)
return r;
r = load_from_path(u, k);
if (r < 0) {
if (r == -ENOEXEC)
log_unit_notice(u, "Unit configuration has fatal error, unit will not be started.");
return r;
}
if (u->load_state == UNIT_STUB) {
SET_FOREACH(t, u->names, i) {
_cleanup_free_ char *z = NULL;
if (t == u->id)
continue;
r = unit_name_template(t, &z);
if (r < 0)
return r;
r = load_from_path(u, z);
if (r < 0)
return r;
if (u->load_state != UNIT_STUB)
break;
}
}
}
return 0;
}
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_size, "SIZE" },
{ config_parse_bool, "BOOLEAN" },
{ config_parse_string, "STRING" },
{ config_parse_path, "PATH" },
{ config_parse_unit_path_printf, "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_restart, "SERVICERESTART" },
{ 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_requires_mounts_for, "PATH [...]" },
{ config_parse_exec_mount_flags, "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_condition_null, "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_address_families, "FAMILIES" },
{ config_parse_restrict_namespaces, "NAMESPACES" },
#endif
{ config_parse_cpu_shares, "SHARES" },
{ config_parse_cg_weight, "WEIGHT" },
{ 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_blockio_bandwidth, "BANDWIDTH" },
{ config_parse_blockio_weight, "WEIGHT" },
{ config_parse_blockio_device_weight, "DEVICEWEIGHT" },
{ 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" },
};
const char *prev = NULL;
const char *i;
assert(f);
NULSTR_FOREACH(i, load_fragment_gperf_nulstr) {
const char *rvalue = "OTHER", *lvalue;
const ConfigPerfItem *p;
size_t prefix_len;
const char *dot;
unsigned j;
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;
for (j = 0; j < ELEMENTSOF(table); j++)
if (p->parse == table[j].callback) {
rvalue = table[j].rvalue;
break;
}
dot = strchr(i, '.');
lvalue = dot ? dot + 1 : i;
prefix_len = dot-i;
if (dot)
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;
}
}
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