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Systemd/src/load-fragment.c
Lennart Poettering 7f110ff9b8 conf: enforce UTF8 validty everywhere 
we need to make sure that configuration data we expose via the bus ends
up in using getting an assert(). Even though configuration data is only
parsed from trusted sources we should be more careful with what we read.
2012-03-12 22:22:21 +01:00

2446 lines
70 KiB
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 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
General Public License for more details.
You should have received a copy of the GNU 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 "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 "bus-errors.h"
#include "utf8.h"
#ifndef HAVE_SYSV_COMPAT
int config_parse_warn_compat(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
log_debug("[%s:%u] Support for option %s= has been disabled at compile time and is ignored", filename, line, lvalue);
return 0;
}
#endif
int config_parse_unit_deps(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
UnitDependency d = ltype;
Unit *u = userdata;
char *w;
size_t l;
char *state;
assert(filename);
assert(lvalue);
assert(rvalue);
FOREACH_WORD_QUOTED(w, l, rvalue, state) {
char *t, *k;
int r;
t = strndup(w, l);
if (!t)
return -ENOMEM;
k = unit_name_printf(u, t);
free(t);
if (!k)
return -ENOMEM;
r = unit_add_dependency_by_name(u, d, k, NULL, true);
if (r < 0)
log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", filename, line, k, strerror(-r));
free(k);
}
return 0;
}
int config_parse_unit_names(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
Unit *u = userdata;
char *w;
size_t l;
char *state;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
FOREACH_WORD_QUOTED(w, l, rvalue, state) {
char *t, *k;
int r;
t = strndup(w, l);
if (!t)
return -ENOMEM;
k = unit_name_printf(u, t);
free(t);
if (!k)
return -ENOMEM;
r = unit_merge_by_name(u, k);
if (r < 0)
log_error("Failed to add name %s, ignoring: %s", k, strerror(-r));
free(k);
}
return 0;
}
int config_parse_unit_string_printf(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
Unit *u = userdata;
char *k;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(u);
k = unit_full_printf(u, rvalue);
if (!k)
return -ENOMEM;
r = config_parse_string(filename, line, section, lvalue, ltype, k, data, userdata);
free (k);
return r;
}
int config_parse_unit_strv_printf(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
Unit *u = userdata;
char *k;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(u);
k = unit_full_printf(u, rvalue);
if (!k)
return -ENOMEM;
r = config_parse_strv(filename, line, section, lvalue, ltype, k, data, userdata);
free(k);
return r;
}
int config_parse_unit_path_printf(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
Unit *u = userdata;
char *k;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(u);
k = unit_full_printf(u, rvalue);
if (!k)
return -ENOMEM;
r = config_parse_path(filename, line, section, lvalue, ltype, k, data, userdata);
free(k);
return r;
}
int config_parse_socket_listen(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
SocketPort *p, *tail;
Socket *s;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
s = SOCKET(data);
p = new0(SocketPort, 1);
if (!p)
return -ENOMEM;
if (streq(lvalue, "ListenFIFO")) {
p->type = SOCKET_FIFO;
if (!(p->path = unit_full_printf(UNIT(s), rvalue))) {
free(p);
return -ENOMEM;
}
path_kill_slashes(p->path);
} else if (streq(lvalue, "ListenSpecial")) {
p->type = SOCKET_SPECIAL;
if (!(p->path = unit_full_printf(UNIT(s), rvalue))) {
free(p);
return -ENOMEM;
}
path_kill_slashes(p->path);
} else if (streq(lvalue, "ListenMessageQueue")) {
p->type = SOCKET_MQUEUE;
if (!(p->path = unit_full_printf(UNIT(s), rvalue))) {
free(p);
return -ENOMEM;
}
path_kill_slashes(p->path);
} else if (streq(lvalue, "ListenNetlink")) {
char *k;
int r;
p->type = SOCKET_SOCKET;
k = unit_full_printf(UNIT(s), rvalue);
r = socket_address_parse_netlink(&p->address, k);
free(k);
if (r < 0) {
log_error("[%s:%u] Failed to parse address value, ignoring: %s", filename, line, rvalue);
free(p);
return 0;
}
} else {
char *k;
int r;
p->type = SOCKET_SOCKET;
k = unit_full_printf(UNIT(s), rvalue);
r = socket_address_parse(&p->address, k);
free(k);
if (r < 0) {
log_error("[%s:%u] Failed to parse address value, ignoring: %s", filename, line, rvalue);
free(p);
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_error("[%s:%u] Address family not supported, ignoring: %s", filename, line, rvalue);
free(p);
return 0;
}
}
p->fd = -1;
if (s->ports) {
LIST_FIND_TAIL(SocketPort, port, s->ports, tail);
LIST_INSERT_AFTER(SocketPort, port, s->ports, tail, p);
} else
LIST_PREPEND(SocketPort, port, s->ports, p);
return 0;
}
int config_parse_socket_bind(
const char *filename,
unsigned line,
const char *section,
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);
if ((b = socket_address_bind_ipv6_only_from_string(rvalue)) < 0) {
int r;
if ((r = parse_boolean(rvalue)) < 0) {
log_error("[%s:%u] Failed to parse bind IPv6 only value, ignoring: %s", filename, line, 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 *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
int priority;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (safe_atoi(rvalue, &priority) < 0) {
log_error("[%s:%u] Failed to parse nice priority, ignoring: %s. ", filename, line, rvalue);
return 0;
}
if (priority < PRIO_MIN || priority >= PRIO_MAX) {
log_error("[%s:%u] Nice priority out of range, ignoring: %s", filename, line, rvalue);
return 0;
}
c->nice = priority;
c->nice_set = true;
return 0;
}
int config_parse_exec_oom_score_adjust(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
int oa;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (safe_atoi(rvalue, &oa) < 0) {
log_error("[%s:%u] Failed to parse the OOM score adjust value, ignoring: %s", filename, line, rvalue);
return 0;
}
if (oa < OOM_SCORE_ADJ_MIN || oa > OOM_SCORE_ADJ_MAX) {
log_error("[%s:%u] OOM score adjust value out of range, ignoring: %s", filename, line, rvalue);
return 0;
}
c->oom_score_adjust = oa;
c->oom_score_adjust_set = true;
return 0;
}
int config_parse_exec(
const char *filename,
unsigned line,
const char *section,
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);
/* We accept an absolute path as first argument, or
* alternatively an absolute prefixed with @ to allow
* overriding of argv[0]. */
e += ltype;
for (;;) {
char *w;
size_t l;
char *state;
bool honour_argv0 = false, ignore = false;
path = NULL;
nce = NULL;
n = NULL;
rvalue += strspn(rvalue, WHITESPACE);
if (rvalue[0] == 0)
break;
if (rvalue[0] == '-') {
ignore = true;
rvalue ++;
}
if (rvalue[0] == '@') {
honour_argv0 = true;
rvalue ++;
}
if (*rvalue != '/') {
log_error("[%s:%u] Invalid executable path in command line, ignoring: %s", filename, line, rvalue);
return 0;
}
k = 0;
FOREACH_WORD_QUOTED(w, l, rvalue, state) {
if (strncmp(w, ";", MAX(l, 1U)) == 0)
break;
k++;
}
n = new(char*, k + !honour_argv0);
if (!n)
return -ENOMEM;
k = 0;
FOREACH_WORD_QUOTED(w, l, rvalue, state) {
if (strncmp(w, ";", MAX(l, 1U)) == 0)
break;
if (honour_argv0 && w == rvalue) {
assert(!path);
path = strndup(w, l);
if (!path) {
r = -ENOMEM;
goto fail;
}
if (!utf8_is_valid(path)) {
log_error("[%s:%u] Path is not UTF-8 clean, ignoring assignment: %s", filename, line, rvalue);
r = 0;
goto fail;
}
} else {
char *c;
c = n[k++] = cunescape_length(w, l);
if (!c) {
r = -ENOMEM;
goto fail;
}
if (!utf8_is_valid(c)) {
log_error("[%s:%u] Path is not UTF-8 clean, ignoring assignment: %s", filename, line, rvalue);
r = 0;
goto fail;
}
}
}
n[k] = NULL;
if (!n[0]) {
log_error("[%s:%u] Invalid command line, ignoring: %s", filename, line, rvalue);
r = 0;
goto fail;
}
if (!path) {
path = strdup(n[0]);
if (!path) {
r = -ENOMEM;
goto fail;
}
}
assert(path_is_absolute(path));
nce = new0(ExecCommand, 1);
if (!nce) {
r = -ENOMEM;
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 *filename,
unsigned line,
const char *section,
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, "*")) {
if (!(n = strdup(rvalue)))
return -ENOMEM;
} 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_facility(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
int *o = data, x;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if ((x = log_facility_unshifted_from_string(rvalue)) < 0) {
log_error("[%s:%u] Failed to parse log facility, ignoring: %s", filename, line, rvalue);
return 0;
}
*o = (x << 3) | LOG_PRI(*o);
return 0;
}
int config_parse_level(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
int *o = data, x;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if ((x = log_level_from_string(rvalue)) < 0) {
log_error("[%s:%u] Failed to parse log level, ignoring: %s", filename, line, rvalue);
return 0;
}
*o = (*o & LOG_FACMASK) | x;
return 0;
}
int config_parse_exec_io_class(
const char *filename,
unsigned line,
const char *section,
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 ((x = ioprio_class_from_string(rvalue)) < 0) {
log_error("[%s:%u] Failed to parse IO scheduling class, ignoring: %s", filename, line, 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 *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
int i;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (safe_atoi(rvalue, &i) < 0 || i < 0 || i >= IOPRIO_BE_NR) {
log_error("[%s:%u] Failed to parse io priority, ignoring: %s", filename, line, 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 *filename,
unsigned line,
const char *section,
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 ((x = sched_policy_from_string(rvalue)) < 0) {
log_error("[%s:%u] Failed to parse CPU scheduling policy, ignoring: %s", filename, line, rvalue);
return 0;
}
c->cpu_sched_policy = x;
c->cpu_sched_set = true;
return 0;
}
int config_parse_exec_cpu_sched_prio(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
int i;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
/* On Linux RR/FIFO have the same range */
if (safe_atoi(rvalue, &i) < 0 || i < sched_get_priority_min(SCHED_RR) || i > sched_get_priority_max(SCHED_RR)) {
log_error("[%s:%u] Failed to parse CPU scheduling priority, ignoring: %s", filename, line, rvalue);
return 0;
}
c->cpu_sched_priority = i;
c->cpu_sched_set = true;
return 0;
}
int config_parse_exec_cpu_affinity(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
char *w;
size_t l;
char *state;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
FOREACH_WORD_QUOTED(w, l, rvalue, state) {
char *t;
int r;
unsigned cpu;
if (!(t = strndup(w, l)))
return -ENOMEM;
r = safe_atou(t, &cpu);
free(t);
if (!(c->cpuset))
if (!(c->cpuset = cpu_set_malloc(&c->cpuset_ncpus)))
return -ENOMEM;
if (r < 0 || cpu >= c->cpuset_ncpus) {
log_error("[%s:%u] Failed to parse CPU affinity, ignoring: %s", filename, line, rvalue);
return 0;
}
CPU_SET_S(cpu, CPU_ALLOC_SIZE(c->cpuset_ncpus), c->cpuset);
}
return 0;
}
int config_parse_exec_capabilities(
const char *filename,
unsigned line,
const char *section,
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);
if (!(cap = cap_from_text(rvalue))) {
if (errno == ENOMEM)
return -ENOMEM;
log_error("[%s:%u] Failed to parse capabilities, ignoring: %s", filename, line, rvalue);
return 0;
}
if (c->capabilities)
cap_free(c->capabilities);
c->capabilities = cap;
return 0;
}
int config_parse_exec_secure_bits(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
char *w;
size_t l;
char *state;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
FOREACH_WORD_QUOTED(w, l, rvalue, state) {
if (first_word(w, "keep-caps"))
c->secure_bits |= SECURE_KEEP_CAPS;
else if (first_word(w, "keep-caps-locked"))
c->secure_bits |= SECURE_KEEP_CAPS_LOCKED;
else if (first_word(w, "no-setuid-fixup"))
c->secure_bits |= SECURE_NO_SETUID_FIXUP;
else if (first_word(w, "no-setuid-fixup-locked"))
c->secure_bits |= SECURE_NO_SETUID_FIXUP_LOCKED;
else if (first_word(w, "noroot"))
c->secure_bits |= SECURE_NOROOT;
else if (first_word(w, "noroot-locked"))
c->secure_bits |= SECURE_NOROOT_LOCKED;
else {
log_error("[%s:%u] Failed to parse secure bits, ignoring: %s", filename, line, rvalue);
return 0;
}
}
return 0;
}
int config_parse_exec_bounding_set(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
char *w;
size_t l;
char *state;
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(w, l, rvalue, state) {
char *t;
int r;
cap_value_t cap;
if (!(t = strndup(w, l)))
return -ENOMEM;
r = cap_from_name(t, &cap);
free(t);
if (r < 0) {
log_error("[%s:%u] Failed to parse capability bounding set, ignoring: %s", filename, line, rvalue);
return 0;
}
sum |= ((uint64_t) 1ULL) << (uint64_t) cap;
}
if (invert)
c->capability_bounding_set_drop |= sum;
else
c->capability_bounding_set_drop |= ~sum;
return 0;
}
int config_parse_exec_timer_slack_nsec(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
unsigned long u;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (safe_atolu(rvalue, &u) < 0) {
log_error("[%s:%u] Failed to parse time slack value, ignoring: %s", filename, line, rvalue);
return 0;
}
c->timer_slack_nsec = u;
return 0;
}
int config_parse_limit(
const char *filename,
unsigned line,
const char *section,
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 if (safe_atollu(rvalue, &u) < 0) {
log_error("[%s:%u] Failed to parse resource value, ignoring: %s", filename, line, rvalue);
return 0;
}
if (!*rl)
if (!(*rl = new(struct rlimit, 1)))
return -ENOMEM;
(*rl)->rlim_cur = (*rl)->rlim_max = (rlim_t) u;
return 0;
}
int config_parse_unit_cgroup(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
Unit *u = userdata;
char *w;
size_t l;
char *state;
FOREACH_WORD_QUOTED(w, l, rvalue, state) {
char *t, *k;
int r;
t = strndup(w, l);
if (!t)
return -ENOMEM;
k = unit_full_printf(u, t);
free(t);
if (!k)
return -ENOMEM;
t = cunescape(k);
free(k);
if (!t)
return -ENOMEM;
r = unit_add_cgroup_from_text(u, t);
free(t);
if (r < 0) {
log_error("[%s:%u] Failed to parse cgroup value, ignoring: %s", filename, line, rvalue);
return 0;
}
}
return 0;
}
#ifdef HAVE_SYSV_COMPAT
int config_parse_sysv_priority(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
int *priority = data;
int i;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (safe_atoi(rvalue, &i) < 0 || i < 0) {
log_error("[%s:%u] Failed to parse SysV start priority, ignoring: %s", filename, line, rvalue);
return 0;
}
*priority = (int) i;
return 0;
}
#endif
int config_parse_fsck_passno(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
int *passno = data;
int i;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (safe_atoi(rvalue, &i) || i < 0) {
log_error("[%s:%u] Failed to parse fsck pass number, ignoring: %s", filename, line, rvalue);
return 0;
}
*passno = (int) i;
return 0;
}
DEFINE_CONFIG_PARSE_ENUM(config_parse_kill_mode, kill_mode, KillMode, "Failed to parse kill mode");
int config_parse_kill_signal(
const char *filename,
unsigned line,
const char *section,
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);
if ((r = signal_from_string_try_harder(rvalue)) <= 0) {
log_error("[%s:%u] Failed to parse kill signal, ignoring: %s", filename, line, rvalue);
return 0;
}
*sig = r;
return 0;
}
int config_parse_exec_mount_flags(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
ExecContext *c = data;
char *w;
size_t l;
char *state;
unsigned long flags = 0;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
FOREACH_WORD_QUOTED(w, l, rvalue, state) {
if (strncmp(w, "shared", MAX(l, 6U)) == 0)
flags |= MS_SHARED;
else if (strncmp(w, "slave", MAX(l, 5U)) == 0)
flags |= MS_SLAVE;
else if (strncmp(w, "private", MAX(l, 7U)) == 0)
flags |= MS_PRIVATE;
else {
log_error("[%s:%u] Failed to parse mount flags, ignoring: %s", filename, line, rvalue);
return 0;
}
}
c->mount_flags = flags;
return 0;
}
int config_parse_timer(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
Timer *t = data;
usec_t u;
TimerValue *v;
TimerBase b;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if ((b = timer_base_from_string(lvalue)) < 0) {
log_error("[%s:%u] Failed to parse timer base, ignoring: %s", filename, line, lvalue);
return 0;
}
if (parse_usec(rvalue, &u) < 0) {
log_error("[%s:%u] Failed to parse timer value, ignoring: %s", filename, line, rvalue);
return 0;
}
if (!(v = new0(TimerValue, 1)))
return -ENOMEM;
v->base = b;
v->value = u;
LIST_PREPEND(TimerValue, value, t->values, v);
return 0;
}
int config_parse_timer_unit(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
Timer *t = data;
int r;
DBusError error;
Unit *u;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
dbus_error_init(&error);
if (endswith(rvalue, ".timer")) {
log_error("[%s:%u] Unit cannot be of type timer, ignoring: %s", filename, line, rvalue);
return 0;
}
r = manager_load_unit(UNIT(t)->manager, rvalue, NULL, NULL, &u);
if (r < 0) {
log_error("[%s:%u] Failed to load unit %s, ignoring: %s", filename, line, rvalue, bus_error(&error, r));
dbus_error_free(&error);
return 0;
}
unit_ref_set(&t->unit, u);
return 0;
}
int config_parse_path_spec(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
Path *p = data;
PathSpec *s;
PathType b;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if ((b = path_type_from_string(lvalue)) < 0) {
log_error("[%s:%u] Failed to parse path type, ignoring: %s", filename, line, lvalue);
return 0;
}
if (!path_is_absolute(rvalue)) {
log_error("[%s:%u] Path is not absolute, ignoring: %s", filename, line, rvalue);
return 0;
}
if (!(s = new0(PathSpec, 1)))
return -ENOMEM;
if (!(s->path = strdup(rvalue))) {
free(s);
return -ENOMEM;
}
path_kill_slashes(s->path);
s->type = b;
s->inotify_fd = -1;
LIST_PREPEND(PathSpec, spec, p->specs, s);
return 0;
}
int config_parse_path_unit(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
Path *t = data;
int r;
DBusError error;
Unit *u;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
dbus_error_init(&error);
if (endswith(rvalue, ".path")) {
log_error("[%s:%u] Unit cannot be of type path, ignoring: %s", filename, line, rvalue);
return 0;
}
if ((r = manager_load_unit(UNIT(t)->manager, rvalue, NULL, &error, &u)) < 0) {
log_error("[%s:%u] Failed to load unit %s, ignoring: %s", filename, line, rvalue, bus_error(&error, r));
dbus_error_free(&error);
return 0;
}
unit_ref_set(&t->unit, u);
return 0;
}
int config_parse_socket_service(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
Socket *s = data;
int r;
DBusError error;
Unit *x;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
dbus_error_init(&error);
if (!endswith(rvalue, ".service")) {
log_error("[%s:%u] Unit must be of type service, ignoring: %s", filename, line, rvalue);
return 0;
}
r = manager_load_unit(UNIT(s)->manager, rvalue, NULL, &error, &x);
if (r < 0) {
log_error("[%s:%u] Failed to load unit %s, ignoring: %s", filename, line, rvalue, bus_error(&error, r));
dbus_error_free(&error);
return 0;
}
unit_ref_set(&s->service, x);
return 0;
}
int config_parse_service_sockets(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
Service *s = data;
int r;
char *state, *w;
size_t l;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
FOREACH_WORD_QUOTED(w, l, rvalue, state) {
char *t, *k;
t = strndup(w, l);
if (!t)
return -ENOMEM;
k = unit_name_printf(UNIT(s), t);
free(t);
if (!k)
return -ENOMEM;
if (!endswith(k, ".socket")) {
log_error("[%s:%u] Unit must be of type socket, ignoring: %s", filename, line, rvalue);
free(k);
continue;
}
r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_WANTS, UNIT_AFTER, k, NULL, true);
if (r < 0)
log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", filename, line, k, strerror(-r));
r = unit_add_dependency_by_name(UNIT(s), UNIT_TRIGGERED_BY, k, NULL, true);
if (r < 0)
return r;
free(k);
}
return 0;
}
int config_parse_unit_env_file(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
char ***env = data, **k;
Unit *u = userdata;
char *s;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
s = unit_full_printf(u, rvalue);
if (!s)
return -ENOMEM;
if (!path_is_absolute(s[0] == '-' ? s + 1 : s)) {
log_error("[%s:%u] Path '%s' is not absolute, ignoring.", filename, line, s);
free(s);
return 0;
}
k = strv_append(*env, s);
free(s);
if (!k)
return -ENOMEM;
strv_free(*env);
*env = k;
return 0;
}
int config_parse_ip_tos(
const char *filename,
unsigned line,
const char *section,
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);
if ((x = ip_tos_from_string(rvalue)) < 0)
if (safe_atoi(rvalue, &x) < 0) {
log_error("[%s:%u] Failed to parse IP TOS value, ignoring: %s", filename, line, rvalue);
return 0;
}
*ip_tos = x;
return 0;
}
int config_parse_unit_condition_path(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
ConditionType cond = ltype;
Unit *u = data;
bool trigger, negate;
Condition *c;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
trigger = rvalue[0] == '|';
if (trigger)
rvalue++;
negate = rvalue[0] == '!';
if (negate)
rvalue++;
if (!path_is_absolute(rvalue)) {
log_error("[%s:%u] Path in condition not absolute, ignoring: %s", filename, line, rvalue);
return 0;
}
c = condition_new(cond, rvalue, trigger, negate);
if (!c)
return -ENOMEM;
LIST_PREPEND(Condition, conditions, u->conditions, c);
return 0;
}
int config_parse_unit_condition_string(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
ConditionType cond = ltype;
Unit *u = data;
bool trigger, negate;
Condition *c;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if ((trigger = rvalue[0] == '|'))
rvalue++;
if ((negate = rvalue[0] == '!'))
rvalue++;
if (!(c = condition_new(cond, rvalue, trigger, negate)))
return -ENOMEM;
LIST_PREPEND(Condition, conditions, u->conditions, c);
return 0;
}
int config_parse_unit_condition_null(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
Unit *u = data;
Condition *c;
bool trigger, negate;
int b;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if ((trigger = rvalue[0] == '|'))
rvalue++;
if ((negate = rvalue[0] == '!'))
rvalue++;
if ((b = parse_boolean(rvalue)) < 0) {
log_error("[%s:%u] Failed to parse boolean value in condition, ignoring: %s", filename, line, rvalue);
return 0;
}
if (!b)
negate = !negate;
if (!(c = condition_new(CONDITION_NULL, NULL, trigger, negate)))
return -ENOMEM;
LIST_PREPEND(Condition, conditions, u->conditions, 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_start_limit_action, start_limit_action, StartLimitAction, "Failed to parse start limit action specifier");
int config_parse_unit_cgroup_attr(
const char *filename,
unsigned line,
const char *section,
const char *lvalue,
int ltype,
const char *rvalue,
void *data,
void *userdata) {
Unit *u = data;
char **l;
int r;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
l = strv_split_quoted(rvalue);
if (!l)
return -ENOMEM;
if (strv_length(l) != 2) {
log_error("[%s:%u] Failed to parse cgroup attribute value, ignoring: %s", filename, line, rvalue);
strv_free(l);
return 0;
}
r = unit_add_cgroup_attribute(u, NULL, l[0], l[1], NULL);
strv_free(l);
if (r < 0) {
log_error("[%s:%u] Failed to add cgroup attribute value, ignoring: %s", filename, line, rvalue);
return 0;
}
return 0;
}
int config_parse_unit_cpu_shares(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) {
Unit *u = data;
int r;
unsigned long ul;
char *t;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (safe_atolu(rvalue, &ul) < 0 || ul < 1) {
log_error("[%s:%u] Failed to parse CPU shares value, ignoring: %s", filename, line, rvalue);
return 0;
}
if (asprintf(&t, "%lu", ul) < 0)
return -ENOMEM;
r = unit_add_cgroup_attribute(u, "cpu", "cpu.shares", t, NULL);
free(t);
if (r < 0) {
log_error("[%s:%u] Failed to add cgroup attribute value, ignoring: %s", filename, line, rvalue);
return 0;
}
return 0;
}
int config_parse_unit_memory_limit(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) {
Unit *u = data;
int r;
off_t sz;
char *t;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
if (parse_bytes(rvalue, &sz) < 0 || sz <= 0) {
log_error("[%s:%u] Failed to parse memory limit value, ignoring: %s", filename, line, rvalue);
return 0;
}
if (asprintf(&t, "%llu", (unsigned long long) sz) < 0)
return -ENOMEM;
r = unit_add_cgroup_attribute(u,
"memory",
streq(lvalue, "MemorySoftLimit") ? "memory.soft_limit_in_bytes" : "memory.limit_in_bytes",
t, NULL);
free(t);
if (r < 0) {
log_error("[%s:%u] Failed to add cgroup attribute value, ignoring: %s", filename, line, rvalue);
return 0;
}
return 0;
}
static int device_map(const char *controller, const char *name, const char *value, char **ret) {
char **l;
assert(controller);
assert(name);
assert(value);
assert(ret);
l = strv_split_quoted(value);
if (!l)
return -ENOMEM;
assert(strv_length(l) >= 1);
if (streq(l[0], "*")) {
if (asprintf(ret, "a *:*%s%s",
isempty(l[1]) ? "" : " ", strempty(l[1])) < 0) {
strv_free(l);
return -ENOMEM;
}
} else {
struct stat st;
if (stat(l[0], &st) < 0) {
log_warning("Couldn't stat device %s", l[0]);
strv_free(l);
return -errno;
}
if (!S_ISCHR(st.st_mode) && !S_ISBLK(st.st_mode)) {
log_warning("%s is not a device.", l[0]);
strv_free(l);
return -ENODEV;
}
if (asprintf(ret, "%c %u:%u%s%s",
S_ISCHR(st.st_mode) ? 'c' : 'b',
major(st.st_rdev), minor(st.st_rdev),
isempty(l[1]) ? "" : " ", strempty(l[1])) < 0) {
strv_free(l);
return -ENOMEM;
}
}
strv_free(l);
return 0;
}
int config_parse_unit_device_allow(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) {
Unit *u = data;
char **l;
int r;
unsigned k;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
l = strv_split_quoted(rvalue);
if (!l)
return -ENOMEM;
k = strv_length(l);
if (k < 1 || k > 2) {
log_error("[%s:%u] Failed to parse device value, ignoring: %s", filename, line, rvalue);
strv_free(l);
return 0;
}
if (!streq(l[0], "*") && !path_startswith(l[0], "/dev")) {
log_error("[%s:%u] Device node path not absolute, ignoring: %s", filename, line, rvalue);
strv_free(l);
return 0;
}
if (!isempty(l[1]) && !in_charset(l[1], "rwm")) {
log_error("[%s:%u] Device access string invalid, ignoring: %s", filename, line, rvalue);
strv_free(l);
return 0;
}
strv_free(l);
r = unit_add_cgroup_attribute(u, "devices",
streq(lvalue, "DeviceAllow") ? "devices.allow" : "devices.deny",
rvalue, device_map);
if (r < 0) {
log_error("[%s:%u] Failed to add cgroup attribute value, ignoring: %s", filename, line, rvalue);
return 0;
}
return 0;
}
static int blkio_map(const char *controller, const char *name, const char *value, char **ret) {
struct stat st;
char **l;
dev_t d;
assert(controller);
assert(name);
assert(value);
assert(ret);
l = strv_split_quoted(value);
if (!l)
return -ENOMEM;
assert(strv_length(l) == 2);
if (stat(l[0], &st) < 0) {
log_warning("Couldn't stat device %s", l[0]);
strv_free(l);
return -errno;
}
if (S_ISBLK(st.st_mode))
d = st.st_rdev;
else if (major(st.st_dev) != 0) {
/* If this is not a device node then find the block
* device this file is stored on */
d = st.st_dev;
/* If this is a partition, try to get the originating
* block device */
block_get_whole_disk(d, &d);
} else {
log_warning("%s is not a block device and file system block device cannot be determined or is not local.", l[0]);
strv_free(l);
return -ENODEV;
}
if (asprintf(ret, "%u:%u %s", major(d), minor(d), l[1]) < 0) {
strv_free(l);
return -ENOMEM;
}
strv_free(l);
return 0;
}
int config_parse_unit_blkio_weight(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) {
Unit *u = data;
int r;
unsigned long ul;
const char *device = NULL, *weight;
unsigned k;
char *t, **l;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
l = strv_split_quoted(rvalue);
if (!l)
return -ENOMEM;
k = strv_length(l);
if (k < 1 || k > 2) {
log_error("[%s:%u] Failed to parse weight value, ignoring: %s", filename, line, rvalue);
strv_free(l);
return 0;
}
if (k == 1)
weight = l[0];
else {
device = l[0];
weight = l[1];
}
if (device && !path_is_absolute(device)) {
log_error("[%s:%u] Failed to parse block device node value, ignoring: %s", filename, line, rvalue);
strv_free(l);
return 0;
}
if (safe_atolu(weight, &ul) < 0 || ul < 10 || ul > 1000) {
log_error("[%s:%u] Failed to parse block IO weight value, ignoring: %s", filename, line, rvalue);
strv_free(l);
return 0;
}
if (device)
r = asprintf(&t, "%s %lu", device, ul);
else
r = asprintf(&t, "%lu", ul);
strv_free(l);
if (r < 0)
return -ENOMEM;
if (device)
r = unit_add_cgroup_attribute(u, "blkio", "blkio.weight_device", t, blkio_map);
else
r = unit_add_cgroup_attribute(u, "blkio", "blkio.weight", t, NULL);
free(t);
if (r < 0) {
log_error("[%s:%u] Failed to add cgroup attribute value, ignoring: %s", filename, line, rvalue);
return 0;
}
return 0;
}
int config_parse_unit_blkio_bandwidth(const char *filename, unsigned line, const char *section, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) {
Unit *u = data;
int r;
off_t bytes;
unsigned k;
char *t, **l;
assert(filename);
assert(lvalue);
assert(rvalue);
assert(data);
l = strv_split_quoted(rvalue);
if (!l)
return -ENOMEM;
k = strv_length(l);
if (k != 2) {
log_error("[%s:%u] Failed to parse bandwidth value, ignoring: %s", filename, line, rvalue);
strv_free(l);
return 0;
}
if (!path_is_absolute(l[0])) {
log_error("[%s:%u] Failed to parse block device node value, ignoring: %s", filename, line, rvalue);
strv_free(l);
return 0;
}
if (parse_bytes(l[1], &bytes) < 0 || bytes <= 0) {
log_error("[%s:%u] Failed to parse block IO bandwith value, ignoring: %s", filename, line, rvalue);
strv_free(l);
return 0;
}
r = asprintf(&t, "%s %llu", l[0], (unsigned long long) bytes);
strv_free(l);
if (r < 0)
return -ENOMEM;
r = unit_add_cgroup_attribute(u, "blkio",
streq(lvalue, "BlockIOReadBandwidth") ? "blkio.read_bps_device" : "blkio.write_bps_device",
t, blkio_map);
free(t);
if (r < 0) {
log_error("[%s:%u] Failed to add cgroup attribute value, ignoring: %s", filename, line, rvalue);
return 0;
}
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 = file_name_from_path(*filename);
if (unit_name_is_valid(name, true)) {
id = set_get(names, name);
if (!id) {
id = strdup(name);
if (!id)
return -ENOMEM;
r = set_put(names, id);
if (r < 0) {
free(id);
return r;
}
}
}
/* Try to open the file name, but don't if its a symlink */
if ((fd = open(*filename, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW)) >= 0)
break;
if (errno != ELOOP)
return -errno;
/* Hmm, so this is a symlink. Let's read the name, and follow it manually */
if ((r = readlink_and_make_absolute(*filename, &target)) < 0)
return r;
free(*filename);
*filename = target;
}
if (!(f = fdopen(fd, "re"))) {
r = -errno;
close_nointr_nofail(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 */
if ((r = unit_merge_by_name(*u, k)) < 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)
if ((r = unit_merge(other, *u)) >= 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;
Set *symlink_names;
FILE *f = NULL;
char *filename = NULL, *id = NULL;
Unit *merged;
struct stat st;
assert(u);
assert(path);
symlink_names = set_new(string_hash_func, string_compare_func);
if (!symlink_names)
return -ENOMEM;
if (path_is_absolute(path)) {
if (!(filename = strdup(path))) {
r = -ENOMEM;
goto finish;
}
if ((r = open_follow(&filename, &f, symlink_names, &id)) < 0) {
free(filename);
filename = NULL;
if (r != -ENOENT)
goto finish;
}
} 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 */
if (!(filename = path_make_absolute(path, *p))) {
r = -ENOMEM;
goto finish;
}
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) {
char *sn;
free(filename);
filename = NULL;
if (r != -ENOENT)
goto finish;
/* Empty the symlink names for the next run */
while ((sn = set_steal_first(symlink_names)))
free(sn);
continue;
}
break;
}
}
if (!filename) {
/* Hmm, no suitable file found? */
r = 0;
goto finish;
}
merged = u;
if ((r = merge_by_names(&merged, symlink_names, id)) < 0)
goto finish;
if (merged != u) {
u->load_state = UNIT_MERGED;
r = 0;
goto finish;
}
zero(st);
if (fstat(fileno(f), &st) < 0) {
r = -errno;
goto finish;
}
if (null_or_empty(&st))
u->load_state = UNIT_MASKED;
else {
/* Now, parse the file contents */
r = config_parse(filename, f, UNIT_VTABLE(u)->sections, config_item_perf_lookup, (void*) load_fragment_gperf_lookup, false, u);
if (r < 0)
goto finish;
u->load_state = UNIT_LOADED;
}
free(u->fragment_path);
u->fragment_path = filename;
filename = NULL;
u->fragment_mtime = timespec_load(&st.st_mtim);
r = 0;
finish:
set_free_free(symlink_names);
free(filename);
if (f)
fclose(f);
return r;
}
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 */
if ((r = load_from_path(u, u->id)) < 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;
if ((r = load_from_path(u, t)) < 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) {
if ((r = load_from_path(u, u->fragment_path)) < 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) {
char *k;
if (!(k = unit_name_template(u->id)))
return -ENOMEM;
r = load_from_path(u, k);
free(k);
if (r < 0)
return r;
if (u->load_state == UNIT_STUB)
SET_FOREACH(t, u->names, i) {
if (t == u->id)
continue;
if (!(k = unit_name_template(t)))
return -ENOMEM;
r = load_from_path(u, k);
free(k);
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_int, "INTEGER" },
{ config_parse_unsigned, "UNSIGNED" },
{ config_parse_bytes_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_facility, "FACILITY" },
{ config_parse_level, "LEVEL" },
{ config_parse_exec_capabilities, "CAPABILITIES" },
{ config_parse_exec_secure_bits, "SECUREBITS" },
{ config_parse_exec_bounding_set, "BOUNDINGSET" },
{ config_parse_exec_timer_slack_nsec, "TIMERSLACK" },
{ config_parse_limit, "LIMIT" },
{ config_parse_unit_cgroup, "CGROUP [...]" },
{ config_parse_unit_deps, "UNIT [...]" },
{ config_parse_unit_names, "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" },
#else
{ config_parse_warn_compat, "NOTSUPPORTED" },
#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_usec, "SECONDS" },
{ config_parse_path_strv, "PATH [...]" },
{ config_parse_exec_mount_flags, "MOUNTFLAG [...]" },
{ config_parse_unit_string_printf, "STRING" },
{ config_parse_timer, "TIMER" },
{ config_parse_timer_unit, "NAME" },
{ config_parse_path_spec, "PATH" },
{ config_parse_path_unit, "UNIT" },
{ 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" },
};
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 || strncmp(prev, i, prefix_len+1) != 0) {
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;
}
}
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