#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 "unit-printf.h"

#include "bus-errors.h"

#include "utf8.h"

#include "path-util.h"

#include "syscall-list.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_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 log_oom();

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);

b = socket_address_bind_ipv6_only_from_string(rvalue);

if (b < 0) {

int r;

r = parse_boolean(rvalue);

if (r < 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

e += ltype;

for (;;) {

int i;

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;

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_error("[%s:%u] Executable path is not absolute, 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;

else if (strncmp(w, "\\;", MAX(l, 1U)) == 0)

w ++;

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_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);

x = ioprio_class_from_string(rvalue);

if (x < 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);

x = sched_policy_from_string(rvalue);

if (x < 0) {

log_error("[%s:%u] Failed to parse CPU scheduling policy, ignoring: %s", filename, line, 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 *filename,

unsigned line,

const char *section,

const char *lvalue,

int ltype,

const char *rvalue,

void *data,

void *userdata) {

ExecContext *c = data;

int i, min, max;

assert(filename);

assert(lvalue);

assert(rvalue);

assert(data);

if (safe_atoi(rvalue, &i) < 0) {

log_error("[%s:%u] Failed to parse CPU scheduling priority, ignoring: %s", filename, line, 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_error("[%s:%u] CPU scheduling priority is out of range, 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_bounding_set(

const char *filename,

unsigned line,

const char *section,

const char *lvalue,

int ltype,

const char *rvalue,

void *data,

void *userdata) {

uint64_t *capability_bounding_set_drop = 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

FOREACH_WORD_QUOTED(w, l, rvalue, state) {

char *t;

int r;

cap_value_t cap;

t = strndup(w, l);

if (!t)

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);

continue;

}

sum |= ((uint64_t) 1ULL) << (uint64_t) cap;

}

if (invert)

*capability_bounding_set_drop |= sum;

else

*capability_bounding_set_drop |= ~sum;

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;

char *k;

assert(filename);

assert(lvalue);

assert(rvalue);

assert(data);

b = path_type_from_string(lvalue);

if (b < 0) {

log_error("[%s:%u] Failed to parse path type, ignoring: %s", filename, line, lvalue);

return 0;

}

k = unit_full_printf(UNIT(p), rvalue);

if (!k)

return log_oom();

if (!path_is_absolute(k)) {

log_error("[%s:%u] Path is not absolute, ignoring: %s", filename, line, k);

free(k);

return 0;

}

s = new0(PathSpec, 1);

if (!s) {

free(k);

return log_oom();

}

s->path = path_kill_slashes(k);

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_service_timeout(

const char *filename,

unsigned line,

const char *section,

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_usec(filename, line, section, lvalue, ltype, rvalue, data, userdata);

if (r)

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_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);

x = ip_tos_from_string(rvalue);

if (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;

_cleanup_free_ char *p = NULL;

assert(filename);

assert(lvalue);

assert(rvalue);

assert(data);

trigger = rvalue[0] == '|';

if (trigger)

rvalue++;

negate = rvalue[0] == '!';

if (negate)

rvalue++;

p = unit_full_printf(u, rvalue);

if (!p)

return -ENOMEM;

if (!path_is_absolute(p)) {

log_error("[%s:%u] Path in condition not absolute, ignoring: %s", filename, line, p);

return 0;

}

c = condition_new(cond, p, 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;

_cleanup_free_ char *s = NULL;

assert(filename);

assert(lvalue);

assert(rvalue);

assert(data);

trigger = rvalue[0] == '|';

if (trigger)

rvalue++;

negate = rvalue[0] == '!';

if (negate)

rvalue++;

s = unit_full_printf(u, rvalue);

if (!s)

return -ENOMEM;

c = condition_new(cond, s, trigger, negate);

if (!c)

return log_oom();

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

d = st.st_dev;

/* If this is a partition, try to get the originating

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 bandwidth 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;

}

int config_parse_unit_requires_mounts_for(

const char *filename,

unsigned line,

const char *section,

const char *lvalue,

int ltype,

const char *rvalue,

void *data,

void *userdata) {

Unit *u = userdata;

int r;

bool empty_before;

assert(filename);

assert(lvalue);

assert(rvalue);

assert(data);

empty_before = !u->requires_mounts_for;

r = config_parse_path_strv(filename, line, section, lvalue, ltype, rvalue, data, userdata);

/* Make it easy to find units with requires_mounts set */

if (empty_before && u->requires_mounts_for)

LIST_PREPEND(Unit, has_requires_mounts_for, u->manager->has_requires_mounts_for, u);

return r;

}

int config_parse_documentation(

const char *filename,

unsigned line,

const char *section,

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);

r = config_parse_unit_strv_printf(filename, line, section, 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_error("[%s:%u] Invalid URL, ignoring: %s", filename, line, *a);

free(*a);

}

}

*b = NULL;

return r;

}

static void syscall_set(uint32_t *p, int nr) {

p[nr >> 4] |= 1 << (nr & 31);

}

static void syscall_unset(uint32_t *p, int nr) {

p[nr >> 4] &= ~(1 << (nr & 31));

}

int config_parse_syscall_filter(

const char *filename,

unsigned line,

const char *section,

const char *lvalue,

int ltype,

const char *rvalue,

void *data,

void *userdata) {

ExecContext *c = data;

Unit *u = userdata;

bool invert = false;

char *w;

size_t l;

char *state;

assert(filename);

assert(lvalue);

assert(rvalue);

assert(u);

if (rvalue[0] == '~') {

invert = true;

rvalue++;

}

if (!c->syscall_filter) {

size_t n;

n = (syscall_max() + 31) >> 4;

c->syscall_filter = new(uint32_t, n);

if (!c->syscall_filter)

return -ENOMEM;

memset(c->syscall_filter, invert ? 0xFF : 0, n * sizeof(uint32_t));

/* Add these by default */

syscall_set(c->syscall_filter, __NR_execve);

syscall_set(c->syscall_filter, __NR_rt_sigreturn);

#ifdef __NR_sigreturn

syscall_set(c->syscall_filter, __NR_sigreturn);

#endif

syscall_set(c->syscall_filter, __NR_exit_group);

syscall_set(c->syscall_filter, __NR_exit);

}

FOREACH_WORD_QUOTED(w, l, rvalue, state) {

int id;

char *t;

t = strndup(w, l);

if (!t)

return -ENOMEM;

id = syscall_from_name(t);

free(t);

if (id < 0) {

log_error("[%s:%u] Failed to parse syscall, ignoring: %s", filename, line, rvalue);

continue;

}

if (invert)

syscall_unset(c->syscall_filter, id);

else

syscall_set(c->syscall_filter, id);

}

c->no_new_privileges = true;

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

for (;;) {

char *target, *name;

if (c++ >= FOLLOW_MAX)

return -ELOOP;

path_kill_slashes(*filename);

/* Add the file name we are currently looking at to

name = path_get_file_name(*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 */

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;

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

r = unit_merge_by_name(*u, k);

if (r < 0) {

Unit *other;

/* Hmm, we couldn't merge the other unit into

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;

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)) {

filename = strdup(path);

if (!filename) {

r = -ENOMEM;

goto finish;

}

r = open_follow(&filename, &f, symlink_names, &id);

if (r < 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

filename = path_make_absolute(path, *p);

if (!filename) {

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) {

free(filename);

filename = NULL;

if (r != -ENOENT)

goto finish;

/* Empty the symlink names for the next run */

set_clear_free(symlink_names);

continue;

}

break;

}

}

if (!filename) {

/* Hmm, no suitable file found? */

r = 0;

goto finish;

}

merged = u;

r = merge_by_names(&merged, symlink_names, id);

if (r < 0)

goto finish;

if (merged != u) {

u->load_state = UNIT_MERGED;

r = 0;

goto finish;

}

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);

if (u->source_path) {

if (stat(u->source_path, &st) >= 0)

u->source_mtime = timespec_load(&st.st_mtim);

else

u->source_mtime = 0;

}

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

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

free(u->fragment_path);

u->fragment_path = NULL;

}

}

/* Look for a template */

if (u->load_state == UNIT_STUB && u->instance) {

char *k;

k = unit_name_template(u->id);

if (!k)

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;

k = unit_name_template(t);

if (!k)

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_bounding_set, "BOUNDINGSET" },

{ config_parse_limit, "LIMIT" },

{ config_parse_unit_cgroup, "CGROUP [...]" },

{ 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" },

#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_nsec, "NANOSECONDS" },

{ config_parse_path_strv, "PATH [...]" },

{ config_parse_unit_requires_mounts_for, "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;

}

}