load-fragment.c revision ae6c3cc009a21df4b51851fb8fe3fde0b7d6d8f0
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
Copyright 2012 Holger Hans Peter Freyther
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <linux/oom.h>
#include <assert.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <sched.h>
#include <sys/prctl.h>
#include <sys/mount.h>
#include <linux/fs.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/types.h>
#include <grp.h>
#ifdef HAVE_SECCOMP
#include <seccomp.h>
#endif
#include "sd-messages.h"
#include "unit.h"
#include "strv.h"
#include "conf-parser.h"
#include "load-fragment.h"
#include "log.h"
#include "ioprio.h"
#include "securebits.h"
#include "missing.h"
#include "unit-name.h"
#include "unit-printf.h"
#include "utf8.h"
#include "path-util.h"
#include "env-util.h"
#include "cgroup.h"
#include "bus-util.h"
#include "bus-error.h"
#include "errno-list.h"
#include "af-list.h"
#include "cap-list.h"
#ifdef HAVE_SECCOMP
#include "seccomp-util.h"
#endif
int config_parse_warn_compat(
const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
Disabled reason = ltype;
switch(reason) {
case DISABLED_CONFIGURATION:
log_syntax(unit, LOG_DEBUG, filename, line, EINVAL,
"Support for option %s= has been disabled at compile time and it is ignored", lvalue);
break;
case DISABLED_LEGACY:
log_syntax(unit, LOG_INFO, filename, line, EINVAL,
"Support for option %s= has been removed and it is ignored", lvalue);
break;
case DISABLED_EXPERIMENTAL:
log_syntax(unit, LOG_INFO, filename, line, EINVAL,
"Support for option %s= has not yet been enabled and it is ignored", lvalue);
break;
};
return 0;
}
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 *word, *state;
size_t l;
assert(filename);
assert(lvalue);
assert(rvalue);
FOREACH_WORD_QUOTED(word, l, rvalue, state) {
_cleanup_free_ char *t = NULL, *k = NULL;
int r;
t = strndup(word, l);
if (!t)
return log_oom();
r = unit_name_printf(u, t, &k);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to resolve specifiers, ignoring: %s", strerror(-r));
continue;
}
r = unit_add_dependency_by_name(u, d, k, NULL, true);
if (r < 0)
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to add dependency on %s, ignoring: %s", k, strerror(-r));
}
if (!isempty(state))
log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Invalid syntax, ignoring.");
return 0;
}
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) {
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 on %s, ignoring: %s", rvalue, strerror(-r));
return config_parse_string(unit, filename, line, section, section_line, lvalue, ltype,
k ? k : rvalue, 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 on %s, ignoring: %s", rvalue, strerror(-r));
return config_parse_strv(unit, filename, line, section, section_line, lvalue, ltype,
k ? k : rvalue, 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;
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 on %s, ignoring: %s", rvalue, strerror(-r));
return 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;
const char *word, *state;
Unit *u = userdata;
size_t l;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(u);
FOREACH_WORD_QUOTED(word, l, rvalue, state) {
_cleanup_free_ char *k = NULL;
char t[l+1];
memcpy(t, word, l);
t[l] = 0;
r = unit_full_printf(u, t, &k);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve unit specifiers on %s, ignoring: %s", t, strerror(-r));
return 0;
}
if (!utf8_is_valid(k)) {
log_invalid_utf8(unit, LOG_ERR, filename, line, EINVAL, rvalue);
return 0;
}
if (!path_is_absolute(k)) {
log_syntax(unit, LOG_ERR, filename, line, -r, "Symlink path %s is not absolute, ignoring: %s", k, strerror(-r));
return 0;
}
path_kill_slashes(k);
r = strv_push(x, k);
if (r < 0)
return log_oom();
k = NULL;
}
if (!isempty(state))
log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Invalid syntax, ignoring.");
return 0;
}
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) {
p->type = ltype;
r = unit_full_printf(UNIT(s), rvalue, &p->path);
if (r < 0) {
p->path = strdup(rvalue);
if (!p->path)
return log_oom();
else
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to resolve unit specifiers on %s, ignoring: %s", rvalue, strerror(-r));
}
path_kill_slashes(p->path);
} else if (streq(lvalue, "ListenNetlink")) {
_cleanup_free_ char *k = NULL;
p->type = SOCKET_SOCKET;
r = unit_full_printf(UNIT(s), rvalue, &k);
if (r < 0)
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to resolve unit specifiers on %s, ignoring: %s", rvalue, strerror(-r));
r = socket_address_parse_netlink(&p->address, k ?: rvalue);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to parse address value, ignoring: %s", rvalue);
return 0;
}
} else {
_cleanup_free_ char *k = NULL;
p->type = SOCKET_SOCKET;
r = unit_full_printf(UNIT(s), rvalue, &k);
if (r < 0)
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to resolve unit specifiers on %s, ignoring: %s", rvalue, strerror(-r));
r = socket_address_parse(&p->address, k ? k : rvalue);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to parse address value, ignoring: %s", rvalue);
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, ENOTSUP,
"Address family not supported, ignoring: %s", rvalue);
return 0;
}
}
p->fd = -1;
p->socket = s;
if (s->ports) {
LIST_FIND_TAIL(port, s->ports, tail);
LIST_INSERT_AFTER(port, s->ports, tail, p);
} else
LIST_PREPEND(port, s->ports, p);
p = NULL;
return 0;
}
int config_parse_socket_bind(const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
Socket *s;
SocketAddressBindIPv6Only b;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
s = SOCKET(data);
b = socket_address_bind_ipv6_only_from_string(rvalue);
if (b < 0) {
int r;
r = parse_boolean(rvalue);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Failed to parse bind IPv6 only value, ignoring: %s", rvalue);
return 0;
}
s->bind_ipv6_only = r ? SOCKET_ADDRESS_IPV6_ONLY : SOCKET_ADDRESS_BOTH;
} else
s->bind_ipv6_only = b;
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);
r = safe_atoi(rvalue, &priority);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to parse nice priority, ignoring: %s. ", rvalue);
return 0;
}
if (priority < PRIO_MIN || priority >= PRIO_MAX) {
log_syntax(unit, LOG_ERR, filename, line, ERANGE,
"Nice priority out of range, ignoring: %s", 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);
r = safe_atoi(rvalue, &oa);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to parse the OOM score adjust value, ignoring: %s", rvalue);
return 0;
}
if (oa < OOM_SCORE_ADJ_MIN || oa > OOM_SCORE_ADJ_MAX) {
log_syntax(unit, LOG_ERR, filename, line, ERANGE,
"OOM score adjust value out of range, ignoring: %s", 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, *nce;
char *path, **n;
unsigned k;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(e);
e += ltype;
if (isempty(rvalue)) {
/* An empty assignment resets the list */
exec_command_free_list(*e);
*e = NULL;
return 0;
}
/* We accept an absolute path as first argument, or
* alternatively an absolute prefixed with @ to allow
* overriding of argv[0]. */
for (;;) {
int i;
const char *word, *state;
size_t l;
bool honour_argv0 = false, ignore = false;
path = NULL;
nce = NULL;
n = NULL;
rvalue += strspn(rvalue, WHITESPACE);
if (rvalue[0] == 0)
break;
for (i = 0; i < 2; i++) {
if (rvalue[0] == '-' && !ignore) {
ignore = true;
rvalue ++;
}
if (rvalue[0] == '@' && !honour_argv0) {
honour_argv0 = true;
rvalue ++;
}
}
if (*rvalue != '/') {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Executable path is not absolute, ignoring: %s", rvalue);
return 0;
}
k = 0;
FOREACH_WORD_QUOTED(word, l, rvalue, state) {
if (strneq(word, ";", MAX(l, 1U)))
goto found;
k++;
}
if (!isempty(state)) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Trailing garbage, ignoring.");
return 0;
}
found:
n = new(char*, k + !honour_argv0);
if (!n)
return log_oom();
k = 0;
FOREACH_WORD_QUOTED(word, l, rvalue, state) {
if (strneq(word, ";", MAX(l, 1U)))
break;
else if (strneq(word, "\\;", MAX(l, 1U)))
word ++;
if (honour_argv0 && word == rvalue) {
assert(!path);
path = strndup(word, l);
if (!path) {
r = log_oom();
goto fail;
}
if (!utf8_is_valid(path)) {
log_invalid_utf8(unit, LOG_ERR, filename, line, EINVAL, rvalue);
r = 0;
goto fail;
}
} else {
char *c;
c = n[k++] = cunescape_length(word, l);
if (!c) {
r = log_oom();
goto fail;
}
if (!utf8_is_valid(c)) {
log_invalid_utf8(unit, LOG_ERR, filename, line, EINVAL, rvalue);
r = 0;
goto fail;
}
}
}
n[k] = NULL;
if (!n[0]) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Invalid command line, ignoring: %s", rvalue);
r = 0;
goto fail;
}
if (!path) {
path = strdup(n[0]);
if (!path) {
r = log_oom();
goto fail;
}
}
assert(path_is_absolute(path));
nce = new0(ExecCommand, 1);
if (!nce) {
r = log_oom();
goto fail;
}
nce->argv = n;
nce->path = path;
nce->ignore = ignore;
path_kill_slashes(nce->path);
exec_command_append_list(e, nce);
rvalue = state;
}
return 0;
fail:
n[k] = NULL;
strv_free(n);
free(path);
free(nce);
return r;
}
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");
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;
char *n;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (rvalue[0] && !streq(rvalue, "*")) {
n = strdup(rvalue);
if (!n)
return log_oom();
} else
n = NULL;
free(s->bind_to_device);
s->bind_to_device = n;
return 0;
}
DEFINE_CONFIG_PARSE_ENUM(config_parse_output, exec_output, ExecOutput, "Failed to parse output specifier");
DEFINE_CONFIG_PARSE_ENUM(config_parse_input, exec_input, ExecInput, "Failed to parse input specifier");
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);
x = ioprio_class_from_string(rvalue);
if (x < 0) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"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);
r = safe_atoi(rvalue, &i);
if (r < 0 || i < 0 || i >= IOPRIO_BE_NR) {
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);
x = sched_policy_from_string(rvalue);
if (x < 0) {
log_syntax(unit, LOG_ERR, filename, line, -x,
"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 policy, 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, ERANGE,
"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;
const char *word, *state;
size_t l;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
/* An empty assignment resets the CPU list */
if (c->cpuset)
CPU_FREE(c->cpuset);
c->cpuset = NULL;
return 0;
}
FOREACH_WORD_QUOTED(word, l, rvalue, state) {
_cleanup_free_ char *t = NULL;
int r;
unsigned cpu;
t = strndup(word, l);
if (!t)
return log_oom();
r = safe_atou(t, &cpu);
if (!c->cpuset) {
c->cpuset = cpu_set_malloc(&c->cpuset_ncpus);
if (!c->cpuset)
return log_oom();
}
if (r < 0 || cpu >= c->cpuset_ncpus) {
log_syntax(unit, LOG_ERR, filename, line, ERANGE,
"Failed to parse CPU affinity '%s', ignoring: %s", t, rvalue);
return 0;
}
CPU_SET_S(cpu, CPU_ALLOC_SIZE(c->cpuset_ncpus), c->cpuset);
}
if (!isempty(state))
log_syntax(unit, LOG_WARNING, filename, line, EINVAL,
"Trailing garbage, ignoring.");
return 0;
}
int config_parse_exec_capabilities(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;
cap_t cap;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
cap = cap_from_text(rvalue);
if (!cap) {
log_syntax(unit, LOG_ERR, filename, line, errno,
"Failed to parse capabilities, ignoring: %s", rvalue);
return 0;
}
if (c->capabilities)
cap_free(c->capabilities);
c->capabilities = cap;
return 0;
}
int config_parse_exec_secure_bits(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;
size_t l;
const char *word, *state;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
/* An empty assignment resets the field */
c->secure_bits = 0;
return 0;
}
FOREACH_WORD_QUOTED(word, l, rvalue, state) {
if (first_word(word, "keep-caps"))
c->secure_bits |= 1<<SECURE_KEEP_CAPS;
else if (first_word(word, "keep-caps-locked"))
c->secure_bits |= 1<<SECURE_KEEP_CAPS_LOCKED;
else if (first_word(word, "no-setuid-fixup"))
c->secure_bits |= 1<<SECURE_NO_SETUID_FIXUP;
else if (first_word(word, "no-setuid-fixup-locked"))
c->secure_bits |= 1<<SECURE_NO_SETUID_FIXUP_LOCKED;
else if (first_word(word, "noroot"))
c->secure_bits |= 1<<SECURE_NOROOT;
else if (first_word(word, "noroot-locked"))
c->secure_bits |= 1<<SECURE_NOROOT_LOCKED;
else {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Failed to parse secure bits, ignoring: %s", rvalue);
return 0;
}
}
if (!isempty(state))
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Invalid syntax, garbage at the end, ignoring.");
return 0;
}
int config_parse_bounding_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_bounding_set_drop = data;
const char *word, *state;
size_t l;
bool invert = false;
uint64_t sum = 0;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (rvalue[0] == '~') {
invert = true;
rvalue++;
}
/* Note that we store this inverted internally, since the
* kernel wants it like this. But we actually expose it
* non-inverted everywhere to have a fully normalized
* interface. */
FOREACH_WORD_QUOTED(word, l, rvalue, state) {
_cleanup_free_ char *t = NULL;
int cap;
t = strndup(word, l);
if (!t)
return log_oom();
cap = capability_from_name(t);
if (cap < 0) {
log_syntax(unit, LOG_ERR, filename, line, errno, "Failed to parse capability in bounding set, ignoring: %s", t);
continue;
}
sum |= ((uint64_t) 1ULL) << (uint64_t) cap;
}
if (!isempty(state))
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Trailing garbage, ignoring.");
if (invert)
*capability_bounding_set_drop |= sum;
else
*capability_bounding_set_drop |= ~sum;
return 0;
}
int config_parse_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) {
struct rlimit **rl = data;
unsigned long long u;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
rl += ltype;
if (streq(rvalue, "infinity"))
u = (unsigned long long) RLIM_INFINITY;
else {
int r;
r = safe_atollu(rvalue, &u);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to parse resource value, ignoring: %s", rvalue);
return 0;
}
}
if (!*rl) {
*rl = new(struct rlimit, 1);
if (!*rl)
return log_oom();
}
(*rl)->rlim_cur = (*rl)->rlim_max = (rlim_t) u;
return 0;
}
#ifdef HAVE_SYSV_COMPAT
int config_parse_sysv_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) {
int *priority = data;
int i, r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
r = safe_atoi(rvalue, &i);
if (r < 0 || i < 0) {
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to parse SysV start priority, ignoring: %s", rvalue);
return 0;
}
*priority = (int) i;
return 0;
}
#endif
DEFINE_CONFIG_PARSE_ENUM(config_parse_kill_mode, kill_mode, KillMode, "Failed to parse kill mode");
int config_parse_kill_signal(const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
int *sig = data;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(sig);
r = signal_from_string_try_harder(rvalue);
if (r <= 0) {
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to parse kill signal, ignoring: %s", rvalue);
return 0;
}
*sig = r;
return 0;
}
int config_parse_exec_mount_flags(const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
const char *word, *state;
size_t l;
unsigned long flags = 0;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
FOREACH_WORD_SEPARATOR(word, l, rvalue, ", ", state) {
_cleanup_free_ char *t;
t = strndup(word, l);
if (!t)
return log_oom();
if (streq(t, "shared"))
flags = MS_SHARED;
else if (streq(t, "slave"))
flags = MS_SLAVE;
else if (streq(word, "private"))
flags = MS_PRIVATE;
else {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Failed to parse mount flag %s, ignoring: %s", t, rvalue);
return 0;
}
}
if (!isempty(state))
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Trailing garbage, ignoring.");
c->mount_flags = flags;
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)) {
free(c->selinux_context);
c->selinux_context = NULL;
c->selinux_context_ignore = false;
return 0;
}
if (rvalue[0] == '-') {
ignore = true;
rvalue++;
} else
ignore = false;
r = unit_name_printf(u, rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to resolve specifiers, ignoring: %s", strerror(-r));
return 0;
}
free(c->selinux_context);
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)) {
free(c->apparmor_profile);
c->apparmor_profile = NULL;
c->apparmor_profile_ignore = false;
return 0;
}
if (rvalue[0] == '-') {
ignore = true;
rvalue++;
} else
ignore = false;
r = unit_name_printf(u, rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to resolve specifiers, ignoring: %s", strerror(-r));
return 0;
}
free(c->apparmor_profile);
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)) {
free(c->smack_process_label);
c->smack_process_label = NULL;
c->smack_process_label_ignore = false;
return 0;
}
if (rvalue[0] == '-') {
ignore = true;
rvalue++;
} else
ignore = false;
r = unit_name_printf(u, rvalue, &k);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to resolve specifiers, ignoring: %s", strerror(-r));
return 0;
}
free(c->smack_process_label);
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 u = 0;
TimerValue *v;
TimerBase b;
CalendarSpec *c = NULL;
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, -b,
"Failed to parse timer base, ignoring: %s", lvalue);
return 0;
}
if (b == TIMER_CALENDAR) {
if (calendar_spec_from_string(rvalue, &c) < 0) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Failed to parse calendar specification, ignoring: %s",
rvalue);
return 0;
}
} else {
if (parse_sec(rvalue, &u) < 0) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Failed to parse timer value, ignoring: %s",
rvalue);
return 0;
}
}
v = new0(TimerValue, 1);
if (!v) {
calendar_spec_free(c);
return log_oom();
}
v->base = b;
v->value = u;
v->calendar_spec = 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 (!set_isempty(u->dependencies[UNIT_TRIGGERS])) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"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 specifiers, ignoring: %s", strerror(-r));
type = unit_name_to_type(p ?: rvalue);
if (type < 0) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Unit type not valid, ignoring: %s", rvalue);
return 0;
}
if (type == u->type) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Trigger cannot be of same type, ignoring: %s", rvalue);
return 0;
}
r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_TRIGGERS, p ?: rvalue, NULL, true);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to add trigger on %s, ignoring: %s", p ?: rvalue, strerror(-r));
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, EINVAL,
"Failed to parse path type, ignoring: %s", lvalue);
return 0;
}
r = unit_full_printf(UNIT(p), rvalue, &k);
if (r < 0) {
k = strdup(rvalue);
if (!k)
return log_oom();
else
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to resolve unit specifiers on %s. Ignoring.",
rvalue);
}
if (!path_is_absolute(k)) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Path is not absolute, ignoring: %s", k);
return 0;
}
s = new0(PathSpec, 1);
if (!s)
return log_oom();
s->unit = UNIT(p);
s->path = path_kill_slashes(k);
k = NULL;
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_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
Socket *s = data;
int r;
Unit *x;
_cleanup_free_ char *p = NULL;
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 specifiers, ignoring: %s", rvalue);
return 0;
}
if (!endswith(p, ".service")) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Unit must be of type service, ignoring: %s", rvalue);
return 0;
}
r = manager_load_unit(UNIT(s)->manager, p, NULL, &error, &x);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to load unit %s, ignoring: %s", rvalue, bus_error_message(&error, r));
return 0;
}
unit_ref_set(&s->service, x);
return 0;
}
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;
int r;
const char *word, *state;
size_t l;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
FOREACH_WORD_QUOTED(word, l, rvalue, state) {
_cleanup_free_ char *t = NULL, *k = NULL;
t = strndup(word, l);
if (!t)
return log_oom();
r = unit_name_printf(UNIT(s), t, &k);
if (r < 0)
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to resolve specifiers, ignoring: %s", strerror(-r));
if (!endswith(k ?: t, ".socket")) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Unit must be of type socket, ignoring: %s", k ?: t);
continue;
}
r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_WANTS, UNIT_AFTER, k ?: t, NULL, true);
if (r < 0)
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to add dependency on %s, ignoring: %s",
k ?: t, strerror(-r));
r = unit_add_dependency_by_name(UNIT(s), UNIT_TRIGGERED_BY, k ?: t, NULL, true);
if (r < 0)
return r;
}
if (!isempty(state))
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Trailing garbage, ignoring.");
return 0;
}
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;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(s);
r = config_parse_sec(unit, filename, line, section, section_line, lvalue, ltype,
rvalue, data, userdata);
if (r < 0)
return r;
if (streq(lvalue, "TimeoutSec")) {
s->start_timeout_defined = true;
s->timeout_stop_usec = s->timeout_start_usec;
} else if (streq(lvalue, "TimeoutStartSec"))
s->start_timeout_defined = true;
return 0;
}
int config_parse_busname_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_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
BusName *n = data;
int r;
Unit *x;
_cleanup_free_ char *p = NULL;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
r = unit_name_printf(UNIT(n), rvalue, &p);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to resolve specifiers, ignoring: %s", rvalue);
return 0;
}
if (!endswith(p, ".service")) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Unit must be of type service, ignoring: %s", rvalue);
return 0;
}
r = manager_load_unit(UNIT(n)->manager, p, NULL, &error, &x);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to load unit %s, ignoring: %s", rvalue, bus_error_message(&error, r));
return 0;
}
unit_ref_set(&n->service, x);
return 0;
}
DEFINE_CONFIG_PARSE_ENUM(config_parse_bus_policy_world, bus_policy_access, BusPolicyAccess, "Failed to parse bus name policy access");
int config_parse_bus_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) {
_cleanup_free_ BusNamePolicy *p = NULL;
_cleanup_free_ char *id_str = NULL;
BusName *busname = data;
char *access_str;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
p = new0(BusNamePolicy, 1);
if (!p)
return log_oom();
if (streq(lvalue, "AllowUser"))
p->type = BUSNAME_POLICY_TYPE_USER;
else if (streq(lvalue, "AllowGroup"))
p->type = BUSNAME_POLICY_TYPE_GROUP;
else
assert_not_reached("Unknown lvalue");
id_str = strdup(rvalue);
if (!id_str)
return log_oom();
access_str = strpbrk(id_str, WHITESPACE);
if (!access_str) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Invalid busname policy value '%s'", rvalue);
return 0;
}
*access_str = '\0';
access_str++;
access_str += strspn(access_str, WHITESPACE);
p->access = bus_policy_access_from_string(access_str);
if (p->access < 0) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Invalid busname policy access type '%s'", access_str);
return 0;
}
p->name = id_str;
id_str = NULL;
LIST_PREPEND(policy, busname->policy, p);
p = NULL;
return 0;
}
int config_parse_bus_endpoint_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) {
_cleanup_free_ char *name = NULL;
BusPolicyAccess access;
ExecContext *c = data;
char *access_str;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
name = strdup(rvalue);
if (!name)
return log_oom();
access_str = strpbrk(name, WHITESPACE);
if (!access_str) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Invalid endpoint policy value '%s'", rvalue);
return 0;
}
*access_str = '\0';
access_str++;
access_str += strspn(access_str, WHITESPACE);
access = bus_policy_access_from_string(access_str);
if (access <= _BUS_POLICY_ACCESS_INVALID ||
access >= _BUS_POLICY_ACCESS_MAX) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Invalid endpoint policy access type '%s'", access_str);
return 0;
}
if (!c->bus_endpoint) {
r = bus_endpoint_new(&c->bus_endpoint);
if (r < 0)
return r;
}
return bus_endpoint_add_policy(c->bus_endpoint, name, access);
}
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;
const char *s;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
/* Empty assignment frees the list */
strv_free(*env);
*env = NULL;
return 0;
}
r = unit_full_printf(u, rvalue, &n);
if (r < 0)
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to resolve specifiers, ignoring: %s", rvalue);
s = n ?: rvalue;
if (!path_is_absolute(s[0] == '-' ? s + 1 : s)) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Path '%s' is not absolute, ignoring.", s);
return 0;
}
r = strv_extend(env, s);
if (r < 0)
return log_oom();
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 *word, *state;
size_t l;
_cleanup_free_ char *k = NULL;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
strv_free(*env);
*env = NULL;
return 0;
}
if (u) {
r = unit_full_printf(u, rvalue, &k);
if (r < 0)
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to resolve specifiers, ignoring: %s", rvalue);
}
if (!k)
k = strdup(rvalue);
if (!k)
return log_oom();
FOREACH_WORD_QUOTED(word, l, k, state) {
_cleanup_free_ char *n;
char **x;
n = cunescape_length(word, l);
if (!n)
return log_oom();
if (!env_assignment_is_valid(n)) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Invalid environment assignment, ignoring: %s", rvalue);
continue;
}
x = strv_env_set(*env, n);
if (!x)
return log_oom();
strv_free(*env);
*env = x;
}
if (!isempty(state))
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Trailing garbage, ignoring.");
return 0;
}
int config_parse_ip_tos(const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
int *ip_tos = data, x;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
x = ip_tos_from_string(rvalue);
if (x < 0) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Failed to parse IP TOS value, ignoring: %s", rvalue);
return 0;
}
*ip_tos = x;
return 0;
}
int config_parse_unit_condition_path(
const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
_cleanup_free_ char *p = NULL;
Condition **list = 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 */
condition_free_list(*list);
*list = NULL;
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 specifiers, ignoring: %s", rvalue);
return 0;
}
if (!path_is_absolute(p)) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Path in condition not absolute, ignoring: %s", p);
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 */
condition_free_list(*list);
*list = NULL;
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 specifiers, ignoring: %s", 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 */
condition_free_list(*list);
*list = NULL;
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;
}
DEFINE_CONFIG_PARSE_ENUM(config_parse_notify_access, notify_access, NotifyAccess, "Failed to parse notify access specifier");
DEFINE_CONFIG_PARSE_ENUM(config_parse_failure_action, failure_action, FailureAction, "Failed to parse failure action specifier");
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) {
Unit *u = userdata;
const char *word, *state;
size_t l;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
FOREACH_WORD_QUOTED(word, l, rvalue, state) {
int r;
_cleanup_free_ char *n;
n = strndup(word, l);
if (!n)
return log_oom();
if (!utf8_is_valid(n)) {
log_invalid_utf8(unit, LOG_ERR, filename, line, EINVAL, rvalue);
continue;
}
r = unit_require_mounts_for(u, n);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to add required mount for, ignoring: %s", rvalue);
continue;
}
}
if (!isempty(state))
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Trailing garbage, ignoring.");
return 0;
}
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 */
strv_free(u->documentation);
u->documentation = NULL;
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 (is_valid_documentation_url(*a))
*(b++) = *a;
else {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Invalid URL, ignoring: %s", *a);
free(*a);
}
}
if (b)
*b = NULL;
return r;
}
#ifdef 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) {
static const char default_syscalls[] =
"execve\0"
"exit\0"
"exit_group\0"
"rt_sigreturn\0"
"sigreturn\0";
ExecContext *c = data;
Unit *u = userdata;
bool invert = false;
const char *word, *state;
size_t l;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(u);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
set_free(c->syscall_filter);
c->syscall_filter = NULL;
c->syscall_whitelist = false;
return 0;
}
if (rvalue[0] == '~') {
invert = true;
rvalue++;
}
if (!c->syscall_filter) {
c->syscall_filter = set_new(NULL);
if (!c->syscall_filter)
return log_oom();
if (invert)
/* Allow everything but the ones listed */
c->syscall_whitelist = false;
else {
const char *i;
/* Allow nothing but the ones listed */
c->syscall_whitelist = true;
/* Accept default syscalls if we are on a whitelist */
NULSTR_FOREACH(i, default_syscalls) {
int id;
id = seccomp_syscall_resolve_name(i);
if (id < 0)
continue;
r = set_put(c->syscall_filter, INT_TO_PTR(id + 1));
if (r == -EEXIST)
continue;
if (r < 0)
return log_oom();
}
}
}
FOREACH_WORD_QUOTED(word, l, rvalue, state) {
_cleanup_free_ char *t = NULL;
int id;
t = strndup(word, l);
if (!t)
return log_oom();
id = seccomp_syscall_resolve_name(t);
if (id < 0) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Failed to parse system call, ignoring: %s", t);
continue;
}
/* If we previously wanted to forbid a syscall and now
* we want to allow it, then remove it from the list
*/
if (!invert == c->syscall_whitelist) {
r = set_put(c->syscall_filter, INT_TO_PTR(id + 1));
if (r == -EEXIST)
continue;
if (r < 0)
return log_oom();
} else
set_remove(c->syscall_filter, INT_TO_PTR(id + 1));
}
if (!isempty(state))
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Trailing garbage, ignoring.");
/* Turn on NNP, but only if it wasn't configured explicitly
* before, and only if we are in user mode. */
if (!c->no_new_privileges_set && u->manager->running_as == SYSTEMD_USER)
c->no_new_privileges = true;
return 0;
}
int config_parse_syscall_archs(
const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
Set **archs = data;
const char *word, *state;
size_t l;
int r;
if (isempty(rvalue)) {
set_free(*archs);
*archs = NULL;
return 0;
}
r = set_ensure_allocated(archs, NULL);
if (r < 0)
return log_oom();
FOREACH_WORD_QUOTED(word, l, rvalue, state) {
_cleanup_free_ char *t = NULL;
uint32_t a;
t = strndup(word, l);
if (!t)
return log_oom();
r = seccomp_arch_from_string(t, &a);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Failed to parse system call architecture, ignoring: %s", t);
continue;
}
r = set_put(*archs, UINT32_TO_PTR(a + 1));
if (r == -EEXIST)
continue;
if (r < 0)
return log_oom();
}
if (!isempty(state))
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Trailing garbage, ignoring.");
return 0;
}
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 = errno_from_name(rvalue);
if (e < 0) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"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 *word, *state;
size_t l;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
set_free(c->address_families);
c->address_families = NULL;
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;
}
FOREACH_WORD_QUOTED(word, l, rvalue, state) {
_cleanup_free_ char *t = NULL;
int af;
t = strndup(word, l);
if (!t)
return log_oom();
af = af_from_name(t);
if (af <= 0) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Failed to parse address family, ignoring: %s", t);
continue;
}
/* If we previously wanted to forbid an address family and now
* we want to allow it, then remove it from the list
*/
if (!invert == c->address_families_whitelist) {
r = set_put(c->address_families, INT_TO_PTR(af));
if (r == -EEXIST)
continue;
if (r < 0)
return log_oom();
} else
set_remove(c->address_families, INT_TO_PTR(af));
}
if (!isempty(state))
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Trailing garbage, ignoring.");
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_free_ char *k = NULL;
Unit *u = userdata, *slice;
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 on %s. Ignoring.", rvalue);
if (!k) {
k = strdup(rvalue);
if (!k)
return log_oom();
}
r = manager_load_unit(u->manager, k, NULL, NULL, &slice);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, -r,
"Failed to load slice unit %s. Ignoring.", k);
return 0;
}
if (slice->type != UNIT_SLICE) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Slice unit %s is not a slice. Ignoring.", k);
return 0;
}
unit_ref_set(&u->slice, slice);
return 0;
}
DEFINE_CONFIG_PARSE_ENUM(config_parse_device_policy, cgroup_device_policy, CGroupDevicePolicy, "Failed to parse device policy");
int config_parse_cpu_shares(
const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
unsigned long *shares = data, lu;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
*shares = (unsigned long) -1;
return 0;
}
r = safe_atolu(rvalue, &lu);
if (r < 0 || lu <= 0) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"CPU shares '%s' invalid. Ignoring.", rvalue);
return 0;
}
*shares = lu;
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;
double percent;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
c->cpu_quota_per_sec_usec = USEC_INFINITY;
return 0;
}
if (!endswith(rvalue, "%")) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"CPU quota '%s' not ending in '%%'. Ignoring.", rvalue);
return 0;
}
if (sscanf(rvalue, "%lf%%", &percent) != 1 || percent <= 0) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"CPU quota '%s' invalid. Ignoring.", rvalue);
return 0;
}
c->cpu_quota_per_sec_usec = (usec_t) (percent * USEC_PER_SEC / 100);
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;
off_t bytes;
int r;
if (isempty(rvalue)) {
c->memory_limit = (uint64_t) -1;
return 0;
}
assert_cc(sizeof(uint64_t) == sizeof(off_t));
r = parse_size(rvalue, 1024, &bytes);
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Memory limit '%s' invalid. Ignoring.", rvalue);
return 0;
}
c->memory_limit = (uint64_t) bytes;
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;
CGroupContext *c = data;
CGroupDeviceAllow *a;
const char *m;
size_t n;
if (isempty(rvalue)) {
while (c->device_allow)
cgroup_context_free_device_allow(c, c->device_allow);
return 0;
}
n = strcspn(rvalue, WHITESPACE);
path = strndup(rvalue, n);
if (!path)
return log_oom();
if (!startswith(path, "/dev/") &&
!startswith(path, "block-") &&
!startswith(path, "char-")) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Invalid device node path '%s'. Ignoring.", path);
return 0;
}
m = rvalue + n + strspn(rvalue + n, WHITESPACE);
if (isempty(m))
m = "rwm";
if (!in_charset(m, "rwm")) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Invalid device rights '%s'. Ignoring.", m);
return 0;
}
a = new0(CGroupDeviceAllow, 1);
if (!a)
return log_oom();
a->path = path;
path = NULL;
a->r = !!strchr(m, 'r');
a->w = !!strchr(m, 'w');
a->m = !!strchr(m, 'm');
LIST_PREPEND(device_allow, c->device_allow, a);
return 0;
}
int config_parse_blockio_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) {
unsigned long *weight = data, lu;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
if (isempty(rvalue)) {
*weight = (unsigned long) -1;
return 0;
}
r = safe_atolu(rvalue, &lu);
if (r < 0 || lu < 10 || lu > 1000) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Block IO weight '%s' invalid. Ignoring.", rvalue);
return 0;
}
*weight = lu;
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;
CGroupBlockIODeviceWeight *w;
CGroupContext *c = data;
unsigned long lu;
const char *weight;
size_t n;
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;
}
n = strcspn(rvalue, WHITESPACE);
weight = rvalue + n;
if (!*weight) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Expected block device and device weight. Ignoring.");
return 0;
}
path = strndup(rvalue, n);
if (!path)
return log_oom();
if (!path_startswith(path, "/dev")) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Invalid device node path '%s'. Ignoring.", path);
return 0;
}
weight += strspn(weight, WHITESPACE);
r = safe_atolu(weight, &lu);
if (r < 0 || lu < 10 || lu > 1000) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Block IO weight '%s' invalid. Ignoring.", rvalue);
return 0;
}
w = new0(CGroupBlockIODeviceWeight, 1);
if (!w)
return log_oom();
w->path = path;
path = NULL;
w->weight = lu;
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;
CGroupBlockIODeviceBandwidth *b;
CGroupContext *c = data;
const char *bandwidth;
off_t bytes;
bool read;
size_t n;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
read = streq("BlockIOReadBandwidth", lvalue);
if (isempty(rvalue)) {
CGroupBlockIODeviceBandwidth *next;
LIST_FOREACH_SAFE (device_bandwidths, b, next, c->blockio_device_bandwidths)
if (b->read == read)
cgroup_context_free_blockio_device_bandwidth(c, b);
return 0;
}
n = strcspn(rvalue, WHITESPACE);
bandwidth = rvalue + n;
bandwidth += strspn(bandwidth, WHITESPACE);
if (!*bandwidth) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Expected space separated pair of device node and bandwidth. Ignoring.");
return 0;
}
path = strndup(rvalue, n);
if (!path)
return log_oom();
if (!path_startswith(path, "/dev")) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Invalid device node path '%s'. Ignoring.", path);
return 0;
}
r = parse_size(bandwidth, 1000, &bytes);
if (r < 0 || bytes <= 0) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Block IO Bandwidth '%s' invalid. Ignoring.", rvalue);
return 0;
}
b = new0(CGroupBlockIODeviceBandwidth, 1);
if (!b)
return log_oom();
b->path = path;
path = NULL;
b->bandwidth = (uint64_t) bytes;
b->read = read;
LIST_PREPEND(device_bandwidths, c->blockio_device_bandwidths, b);
return 0;
}
DEFINE_CONFIG_PARSE_ENUM(config_parse_job_mode, job_mode, JobMode, "Failed to parse job mode");
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, EINVAL,
"Failed to parse boolean, ignoring: %s", rvalue);
return 0;
}
*m = r ? JOB_ISOLATE : JOB_REPLACE;
return 0;
}
int config_parse_personality(
const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
unsigned long *personality = data, p;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(personality);
p = personality_from_string(rvalue);
if (p == 0xffffffffUL) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Failed to parse personality, ignoring: %s", rvalue);
return 0;
}
*personality = p;
return 0;
}
int config_parse_runtime_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) {
char***rt = data;
const char *word, *state;
size_t l;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
strv_free(*rt);
*rt = NULL;
return 0;
}
FOREACH_WORD_QUOTED(word, l, rvalue, state) {
_cleanup_free_ char *n;
n = strndup(word, l);
if (!n)
return log_oom();
if (!filename_is_valid(n)) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Runtime directory is not valid, ignoring assignment: %s", rvalue);
continue;
}
r = strv_push(rt, n);
if (r < 0)
return log_oom();
n = NULL;
}
if (!isempty(state))
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Trailing garbage, ignoring.");
return 0;
}
int config_parse_set_status(
const char *unit,
const char *filename,
unsigned line,
const char *section,
unsigned section_line,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
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;
temp = strndup(word, l);
if (!temp)
return log_oom();
r = safe_atoi(temp, &val);
if (r < 0) {
val = signal_from_string_try_harder(temp);
if (val <= 0) {
log_syntax(unit, LOG_ERR, filename, line, -val,
"Failed to parse value, ignoring: %s", word);
return 0;
}
} else {
if (val < 0 || val > 255) {
log_syntax(unit, LOG_ERR, filename, line, ERANGE,
"Value %d is outside range 0-255, ignoring", val);
continue;
}
}
r = set_ensure_allocated(&status_set->status, NULL);
if (r < 0)
return log_oom();
r = set_put(status_set->status, INT_TO_PTR(val));
if (r < 0) {
log_syntax(unit, LOG_ERR, filename, line, -r,
"Unable to store: %s", word);
return r;
}
}
if (!isempty(state))
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"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) {
char*** sv = data;
const char *word, *state;
size_t l;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (isempty(rvalue)) {
/* Empty assignment resets the list */
strv_free(*sv);
*sv = NULL;
return 0;
}
FOREACH_WORD_QUOTED(word, l, rvalue, state) {
_cleanup_free_ char *n;
int offset;
n = strndup(word, l);
if (!n)
return log_oom();
if (!utf8_is_valid(n)) {
log_invalid_utf8(unit, LOG_ERR, filename, line, EINVAL, rvalue);
continue;
}
offset = n[0] == '-';
if (!path_is_absolute(n + offset)) {
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Not an absolute path, ignoring: %s", rvalue);
continue;
}
path_kill_slashes(n);
r = strv_push(sv, n);
if (r < 0)
return log_oom();
n = NULL;
}
if (!isempty(state))
log_syntax(unit, LOG_ERR, filename, line, EINVAL,
"Trailing garbage, ignoring.");
return 0;
}
int config_parse_no_new_privileges(
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 k;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
k = parse_boolean(rvalue);
if (k < 0) {
log_syntax(unit, LOG_ERR, filename, line, -k,
"Failed to parse boolean value, ignoring: %s", rvalue);
return 0;
}
c->no_new_privileges = !!k;
c->no_new_privileges_set = true;
return 0;
}
int config_parse_protect_home(
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 k;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
/* Our enum shall be a superset of booleans, hence first try
* to parse as as boolean, and then as enum */
k = parse_boolean(rvalue);
if (k > 0)
c->protect_home = PROTECT_HOME_YES;
else if (k == 0)
c->protect_home = PROTECT_HOME_NO;
else {
ProtectHome h;
h = protect_home_from_string(rvalue);
if (h < 0){
log_syntax(unit, LOG_ERR, filename, line, -h,
"Failed to parse protect home value, ignoring: %s", rvalue);
return 0;
}
c->protect_home = h;
}
return 0;
}
int config_parse_protect_system(
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 k;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
/* Our enum shall be a superset of booleans, hence first try
* to parse as as boolean, and then as enum */
k = parse_boolean(rvalue);
if (k > 0)
c->protect_system = PROTECT_SYSTEM_YES;
else if (k == 0)
c->protect_system = PROTECT_SYSTEM_NO;
else {
ProtectSystem s;
s = protect_system_from_string(rvalue);
if (s < 0){
log_syntax(unit, LOG_ERR, filename, line, -s,
"Failed to parse protect system value, ignoring: %s", rvalue);
return 0;
}
c->protect_system = s;
}
return 0;
}
#define FOLLOW_MAX 8
static int open_follow(char **filename, FILE **_f, Set *names, char **_final) {
unsigned c = 0;
int fd, r;
FILE *f;
char *id = NULL;
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_kill_slashes(*filename);
/* 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, TEMPLATE_VALID)) {
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(*filename);
*filename = target;
}
f = fdopen(fd, "re");
if (!f) {
r = -errno;
safe_close(fd);
return r;
}
*_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 */
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) {
int r;
_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;
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) {
free(filename);
filename = NULL;
if (r != -ENOENT)
return r;
}
} else {
char **p;
STRV_FOREACH(p, u->manager->lookup_paths.unit_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) {
free(filename);
filename = NULL;
if (r != -ENOENT)
return r;
/* Empty the symlink names for the next run */
set_clear_free(symlink_names);
continue;
}
break;
}
}
if (!filename)
/* Hmm, no suitable file found? */
return 0;
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;
else {
u->load_state = UNIT_LOADED;
/* Now, parse the file contents */
r = config_parse(u->id, filename, f,
UNIT_VTABLE(u)->sections,
config_item_perf_lookup, load_fragment_gperf_lookup,
false, true, false, u);
if (r < 0)
return r;
}
free(u->fragment_path);
u->fragment_path = filename;
filename = NULL;
u->fragment_mtime = timespec_load(&st.st_mtim);
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);
/* 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. */
free(u->fragment_path);
u->fragment_path = NULL;
}
}
/* Look for a template */
if (u->load_state == UNIT_STUB && u->instance) {
_cleanup_free_ char *k;
k = unit_name_template(u->id);
if (!k)
return -ENOMEM;
r = load_from_path(u, k);
if (r < 0)
return r;
if (u->load_state == UNIT_STUB)
SET_FOREACH(t, u->names, i) {
_cleanup_free_ char *z = NULL;
if (t == u->id)
continue;
z = unit_name_template(t);
if (!z)
return -ENOMEM;
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[] = {
#if !defined(HAVE_SYSV_COMPAT) || !defined(HAVE_SECCOMP) || !defined(HAVE_PAM) || !defined(HAVE_SELINUX) || !defined(HAVE_SMACK) || !defined(HAVE_APPARMOR)
{ config_parse_warn_compat, "NOTSUPPORTED" },
#endif
{ config_parse_int, "INTEGER" },
{ config_parse_unsigned, "UNSIGNED" },
{ config_parse_iec_size, "SIZE" },
{ config_parse_iec_off, "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_output, "OUTPUT" },
{ config_parse_input, "INPUT" },
{ config_parse_log_facility, "FACILITY" },
{ config_parse_log_level, "LEVEL" },
{ config_parse_exec_capabilities, "CAPABILITIES" },
{ config_parse_exec_secure_bits, "SECUREBITS" },
{ config_parse_bounding_set, "BOUNDINGSET" },
{ config_parse_limit, "LIMIT" },
{ config_parse_unit_deps, "UNIT [...]" },
{ config_parse_exec, "PATH [ARGUMENT [...]]" },
{ config_parse_service_type, "SERVICETYPE" },
{ config_parse_service_restart, "SERVICERESTART" },
#ifdef HAVE_SYSV_COMPAT
{ config_parse_sysv_priority, "SYSVPRIORITY" },
#endif
{ config_parse_kill_mode, "KILLMODE" },
{ config_parse_kill_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_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_failure_action, "ACTION" },
{ config_parse_set_status, "STATUS" },
{ config_parse_service_sockets, "SOCKETS" },
{ config_parse_environ, "ENVIRON" },
#ifdef HAVE_SECCOMP
{ config_parse_syscall_filter, "SYSCALLS" },
{ config_parse_syscall_archs, "ARCHS" },
{ config_parse_syscall_errno, "ERRNO" },
{ config_parse_address_families, "FAMILIES" },
#endif
{ config_parse_cpu_shares, "SHARES" },
{ config_parse_memory_limit, "LIMIT" },
{ config_parse_device_allow, "DEVICE" },
{ config_parse_device_policy, "POLICY" },
{ 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" },
#ifdef 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;
unsigned j;
size_t prefix_len;
const char *dot;
const ConfigPerfItem *p;
assert_se(p = load_fragment_gperf_lookup(i, strlen(i)));
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);
}
for (j = 0; j < ELEMENTSOF(table); j++)
if (p->parse == table[j].callback) {
rvalue = table[j].rvalue;
break;
}
fprintf(f, "%s=%s\n", lvalue, rvalue);
prev = i;
}
}