static int test_unit_file_get_set(void) {
int r;
Hashmap *h;
Iterator i;
UnitFileList *p;
h = hashmap_new(&string_hash_ops);
assert_se(h);
r = unit_file_get_list(UNIT_FILE_SYSTEM, NULL, h);
if (r == -EPERM || r == -EACCES) {
printf("Skipping test: unit_file_get_list: %s", strerror(-r));
return EXIT_TEST_SKIP;
}
log_full(r == 0 ? LOG_INFO : LOG_ERR,
"unit_file_get_list: %s", strerror(-r));
if (r < 0)
return EXIT_FAILURE;
HASHMAP_FOREACH(p, h, i)
printf("%s = %s\n", p->path, unit_file_state_to_string(p->state));
unit_file_list_free(h);
return 0;
}
static int mount_one(const MountPoint *p, bool relabel) {
int r;
assert(p);
if (p->condition_fn && !p->condition_fn())
return 0;
/* Relabel first, just in case */
if (relabel)
label_fix(p->where, true, true);
r = path_is_mount_point(p->where, true);
if (r < 0)
return r;
if (r > 0)
return 0;
/* Skip securityfs in a container */
if (!(p->mode & MNT_IN_CONTAINER) && detect_container(NULL) > 0)
return 0;
/* The access mode here doesn't really matter too much, since
* the mounted file system will take precedence anyway. */
if (relabel)
mkdir_p_label(p->where, 0755);
else
mkdir_p(p->where, 0755);
log_debug("Mounting %s to %s of type %s with options %s.",
p->what,
p->where,
p->type,
strna(p->options));
if (mount(p->what,
p->where,
p->type,
p->flags,
p->options) < 0) {
log_full((p->mode & MNT_FATAL) ? LOG_ERR : LOG_DEBUG, "Failed to mount %s at %s: %m", p->type, p->where);
return (p->mode & MNT_FATAL) ? -errno : 0;
}
/* Relabel again, since we now mounted something fresh here */
if (relabel)
label_fix(p->where, false, false);
return 1;
}
int server_open_dev_kmsg(Server *s) {
mode_t mode;
int r;
assert(s);
if (s->read_kmsg)
mode = O_RDWR|O_CLOEXEC|O_NONBLOCK|O_NOCTTY;
else
mode = O_WRONLY|O_CLOEXEC|O_NONBLOCK|O_NOCTTY;
s->dev_kmsg_fd = open("/dev/kmsg", mode);
if (s->dev_kmsg_fd < 0) {
log_full(errno == ENOENT ? LOG_DEBUG : LOG_WARNING,
"Failed to open /dev/kmsg, ignoring: %m");
return 0;
}
if (!s->read_kmsg)
return 0;
r = sd_event_add_io(s->event, &s->dev_kmsg_event_source, s->dev_kmsg_fd, EPOLLIN, dispatch_dev_kmsg, s);
if (r < 0) {
/* This will fail with EPERM on older kernels where
* /dev/kmsg is not readable. */
if (r == -EPERM) {
r = 0;
goto fail;
}
log_error_errno(r, "Failed to add /dev/kmsg fd to event loop: %m");
goto fail;
}
r = sd_event_source_set_priority(s->dev_kmsg_event_source, SD_EVENT_PRIORITY_IMPORTANT+10);
if (r < 0) {
log_error_errno(r, "Failed to adjust priority of kmsg event source: %m");
goto fail;
}
s->dev_kmsg_readable = true;
return 0;
fail:
s->dev_kmsg_event_source = sd_event_source_unref(s->dev_kmsg_event_source);
s->dev_kmsg_fd = safe_close(s->dev_kmsg_fd);
return r;
}
static int hibernation_partition_size(size_t *size, size_t *used) {
_cleanup_fclose_ FILE *f;
unsigned i;
assert(size);
assert(used);
f = fopen("/proc/swaps", "re");
if (!f) {
log_full(errno == ENOENT ? LOG_DEBUG : LOG_WARNING,
"Failed to retrieve open /proc/swaps: %m");
assert(errno > 0);
return -errno;
}
(void) fscanf(f, "%*s %*s %*s %*s %*s\n");
for (i = 1;; i++) {
_cleanup_free_ char *dev = NULL, *type = NULL;
size_t size_field, used_field;
int k;
k = fscanf(f,
"%ms " /* device/file */
"%ms " /* type of swap */
"%zu " /* swap size */
"%zu " /* used */
"%*i\n", /* priority */
&dev, &type, &size_field, &used_field);
if (k != 4) {
if (k == EOF)
break;
log_warning("Failed to parse /proc/swaps:%u", i);
continue;
}
if (streq(type, "partition") && endswith(dev, "\\040(deleted)")) {
log_warning("Ignoring deleted swapfile '%s'.", dev);
continue;
}
*size = size_field;
*used = used_field;
return 0;
}
log_debug("No swap partitions were found.");
return -ENOSYS;
}
bool log_event(EventType type, time_t timestamp) {
if (log_full()) {
APP_LOG(APP_LOG_LEVEL_ERROR, "log capacity exhausted");
return false;
}
eventLog[(firstEventIdx + eventLogSize++) % EVENT_LOG_MAX_SIZE] = (Event){
.type = type,
.timestamp = timestamp
};
LOG(APP_LOG_LEVEL_DEBUG, "recorded one event");
return true;
}
int server_open_dev_kmsg(Server *s) {
int r;
assert(s);
s->dev_kmsg_fd = open("/dev/kmsg", O_RDWR|O_CLOEXEC|O_NONBLOCK|O_NOCTTY);
if (s->dev_kmsg_fd < 0) {
log_full(errno == ENOENT ? LOG_DEBUG : LOG_WARNING,
"Failed to open /dev/kmsg, ignoring: %m");
return 0;
}
r = sd_event_add_io(s->event, &s->dev_kmsg_event_source, s->dev_kmsg_fd, EPOLLIN, dispatch_dev_kmsg, s);
if (r < 0) {
/* This will fail with EPERM on older kernels where
* /dev/kmsg is not readable. */
if (r == -EPERM) {
r = 0;
goto fail;
}
log_error("Failed to add /dev/kmsg fd to event loop: %s", strerror(-r));
goto fail;
}
r = sd_event_source_set_priority(s->dev_kmsg_event_source, SD_EVENT_PRIORITY_IMPORTANT+10);
if (r < 0) {
log_error("Failed to adjust priority of kmsg event source: %s", strerror(-r));
goto fail;
}
s->dev_kmsg_readable = true;
return 0;
fail:
if (s->dev_kmsg_event_source)
s->dev_kmsg_event_source = sd_event_source_unref(s->dev_kmsg_event_source);
if (s->dev_kmsg_fd >= 0) {
close_nointr_nofail(s->dev_kmsg_fd);
s->dev_kmsg_fd = -1;
}
return r;
}
int label_socket_set(const char *label) {
#ifdef HAVE_SELINUX
if (!use_selinux())
return 0;
if (setsockcreatecon((security_context_t) label) < 0) {
log_full(security_getenforce() == 1 ? LOG_ERR : LOG_DEBUG,
"Failed to set SELinux context (%s) on socket: %m", label);
if (security_getenforce() == 1)
return -errno;
}
#endif
return 0;
}
static int update_timeout(void) {
int r;
if (watchdog_fd < 0)
return 0;
if (watchdog_timeout == USEC_INFINITY)
return 0;
else if (watchdog_timeout == 0) {
int flags;
flags = WDIOS_DISABLECARD;
r = ioctl(watchdog_fd, WDIOC_SETOPTIONS, &flags);
if (r < 0)
return log_warning_errno(errno, "Failed to disable hardware watchdog: %m");
} else {
int sec, flags;
char buf[FORMAT_TIMESPAN_MAX];
sec = (int) ((watchdog_timeout + USEC_PER_SEC - 1) / USEC_PER_SEC);
r = ioctl(watchdog_fd, WDIOC_SETTIMEOUT, &sec);
if (r < 0)
return log_warning_errno(errno, "Failed to set timeout to %is: %m", sec);
watchdog_timeout = (usec_t) sec * USEC_PER_SEC;
log_info("Set hardware watchdog to %s.", format_timespan(buf, sizeof(buf), watchdog_timeout, 0));
flags = WDIOS_ENABLECARD;
r = ioctl(watchdog_fd, WDIOC_SETOPTIONS, &flags);
if (r < 0) {
/* ENOTTY means the watchdog is always enabled so we're fine */
log_full(errno == ENOTTY ? LOG_DEBUG : LOG_WARNING,
"Failed to enable hardware watchdog: %m");
if (errno != ENOTTY)
return -errno;
}
r = ioctl(watchdog_fd, WDIOC_KEEPALIVE, 0);
if (r < 0)
return log_warning_errno(errno, "Failed to ping hardware watchdog: %m");
}
return 0;
}
int label_fix(const char *path, bool ignore_enoent) {
int r = 0;
#ifdef HAVE_SELINUX
struct stat st;
security_context_t fcon;
if (!use_selinux() || !label_hnd)
return 0;
r = lstat(path, &st);
if (r == 0) {
r = selabel_lookup_raw(label_hnd, &fcon, path, st.st_mode);
/* If there's no label to set, then exit without warning */
if (r < 0 && errno == ENOENT)
return 0;
if (r == 0) {
r = setfilecon(path, fcon);
freecon(fcon);
/* If the FS doesn't support labels, then exit without warning */
if (r < 0 && errno == ENOTSUP)
return 0;
}
}
if (r < 0) {
/* Ignore ENOENT in some cases */
if (ignore_enoent && errno == ENOENT)
return 0;
log_full(security_getenforce() == 1 ? LOG_ERR : LOG_DEBUG,
"Unable to fix label of %s: %m", path);
r = security_getenforce() == 1 ? -errno : 0;
}
#endif
return r;
}
int label_init(void) {
int r = 0;
#ifdef HAVE_SELINUX
if (!use_selinux())
return 0;
if (label_hnd)
return 0;
label_hnd = selabel_open(SELABEL_CTX_FILE, NULL, 0);
if (!label_hnd) {
log_full(security_getenforce() == 1 ? LOG_ERR : LOG_DEBUG,
"Failed to initialize SELinux context: %m");
r = security_getenforce() == 1 ? -errno : 0;
}
#endif
return r;
}
void cryptsetup_log_glue(int level, const char *msg, void *usrptr) {
switch (level) {
case CRYPT_LOG_NORMAL:
level = LOG_NOTICE;
break;
case CRYPT_LOG_ERROR:
level = LOG_ERR;
break;
case CRYPT_LOG_VERBOSE:
level = LOG_INFO;
break;
case CRYPT_LOG_DEBUG:
level = LOG_DEBUG;
break;
default:
log_error("Unknown libcryptsetup log level: %d", level);
level = LOG_ERR;
}
log_full(level, "%s", msg);
}
static int test_unit_file_get_set(void) {
int r;
Hashmap *h;
Iterator i;
UnitFileList *p;
h = hashmap_new(string_hash_func, string_compare_func);
assert(h);
r = unit_file_get_list(UNIT_FILE_SYSTEM, NULL, h);
log_full(r == 0 ? LOG_INFO : LOG_ERR,
"unit_file_get_list: %s", strerror(-r));
if (r < 0)
return EXIT_FAILURE;
HASHMAP_FOREACH(p, h, i)
printf("%s = %s\n", p->path, unit_file_state_to_string(p->state));
unit_file_list_free(h);
return 0;
}
/* Go through the file and parse each line */
int config_parse(const char *unit,
const char *filename,
FILE *f,
const char *sections,
ConfigItemLookup lookup,
const void *table,
bool relaxed,
bool allow_include,
bool warn,
void *userdata) {
_cleanup_free_ char *section = NULL, *continuation = NULL;
_cleanup_fclose_ FILE *ours = NULL;
unsigned line = 0, section_line = 0;
bool section_ignored = false;
int r;
assert(filename);
assert(lookup);
if (!f) {
f = ours = fopen(filename, "re");
if (!f) {
/* Only log on request, except for ENOENT,
* since we return 0 to the caller. */
if (warn || errno == ENOENT)
log_full(errno == ENOENT ? LOG_DEBUG : LOG_ERR,
"Failed to open configuration file '%s': %m", filename);
return errno == ENOENT ? 0 : -errno;
}
}
fd_warn_permissions(filename, fileno(f));
while (!feof(f)) {
char l[LINE_MAX], *p, *c = NULL, *e;
bool escaped = false;
if (!fgets(l, sizeof(l), f)) {
if (feof(f))
break;
log_error_errno(errno, "Failed to read configuration file '%s': %m", filename);
return -errno;
}
truncate_nl(l);
if (continuation) {
c = strappend(continuation, l);
if (!c) {
if (warn)
log_oom();
return -ENOMEM;
}
continuation = mfree(continuation);
p = c;
} else
p = l;
for (e = p; *e; e++) {
if (escaped)
escaped = false;
else if (*e == '\\')
escaped = true;
}
if (escaped) {
*(e-1) = ' ';
if (c)
continuation = c;
else {
continuation = strdup(l);
if (!continuation) {
if (warn)
log_oom();
return -ENOMEM;
}
}
continue;
}
r = parse_line(unit,
filename,
++line,
sections,
lookup,
table,
relaxed,
allow_include,
§ion,
§ion_line,
§ion_ignored,
p,
userdata);
free(c);
if (r < 0) {
if (warn)
log_warning_errno(r, "Failed to parse file '%s': %m",
filename);
return r;
}
}
return 0;
}
int parse_sleep_config(const char *verb, char ***_modes, char ***_states) {
_cleanup_strv_free_ char
**suspend_mode = NULL, **suspend_state = NULL,
**hibernate_mode = NULL, **hibernate_state = NULL,
**hybrid_mode = NULL, **hybrid_state = NULL;
char **modes, **states;
const ConfigTableItem items[] = {
{ "Sleep", "SuspendMode", config_parse_strv, 0, &suspend_mode },
{ "Sleep", "SuspendState", config_parse_strv, 0, &suspend_state },
{ "Sleep", "HibernateMode", config_parse_strv, 0, &hibernate_mode },
{ "Sleep", "HibernateState", config_parse_strv, 0, &hibernate_state },
{ "Sleep", "HybridSleepMode", config_parse_strv, 0, &hybrid_mode },
{ "Sleep", "HybridSleepState", config_parse_strv, 0, &hybrid_state },
{}
};
int r;
_cleanup_fclose_ FILE *f;
f = fopen(PKGSYSCONFDIR "/sleep.conf", "re");
if (!f)
log_full(errno == ENOENT ? LOG_DEBUG: LOG_WARNING,
"Failed to open configuration file " PKGSYSCONFDIR "/sleep.conf: %m");
else {
r = config_parse(NULL, PKGSYSCONFDIR "/sleep.conf", f, "Sleep\0",
config_item_table_lookup, (void*) items, false, false, NULL);
if (r < 0)
log_warning("Failed to parse configuration file: %s", strerror(-r));
}
if (streq(verb, "suspend")) {
/* empty by default */
USE(modes, suspend_mode);
if (suspend_state)
USE(states, suspend_state);
else
states = strv_new("mem", "standby", "freeze", NULL);
} else if (streq(verb, "hibernate")) {
if (hibernate_mode)
USE(modes, hibernate_mode);
else
modes = strv_new("platform", "shutdown", NULL);
if (hibernate_state)
USE(states, hibernate_state);
else
states = strv_new("disk", NULL);
} else if (streq(verb, "hybrid-sleep")) {
if (hybrid_mode)
USE(modes, hybrid_mode);
else
modes = strv_new("suspend", "platform", "shutdown", NULL);
if (hybrid_state)
USE(states, hybrid_state);
else
states = strv_new("disk", NULL);
} else
assert_not_reached("what verb");
if ((!modes && !streq(verb, "suspend")) || !states) {
strv_free(modes);
strv_free(states);
return log_oom();
}
*_modes = modes;
*_states = states;
return 0;
}
int journal_directory_vacuum(
const char *directory,
uint64_t max_use,
uint64_t n_max_files,
usec_t max_retention_usec,
usec_t *oldest_usec,
bool verbose) {
_cleanup_closedir_ DIR *d = NULL;
struct vacuum_info *list = NULL;
unsigned n_list = 0, i, n_active_files = 0;
size_t n_allocated = 0;
uint64_t sum = 0, freed = 0;
usec_t retention_limit = 0;
char sbytes[FORMAT_BYTES_MAX];
struct dirent *de;
int r;
assert(directory);
if (max_use <= 0 && max_retention_usec <= 0 && n_max_files <= 0)
return 0;
if (max_retention_usec > 0) {
retention_limit = now(CLOCK_REALTIME);
if (retention_limit > max_retention_usec)
retention_limit -= max_retention_usec;
else
max_retention_usec = retention_limit = 0;
}
d = opendir(directory);
if (!d)
return -errno;
FOREACH_DIRENT_ALL(de, d, r = -errno; goto finish) {
unsigned long long seqnum = 0, realtime;
_cleanup_free_ char *p = NULL;
sd_id128_t seqnum_id;
bool have_seqnum;
uint64_t size;
struct stat st;
size_t q;
if (fstatat(dirfd(d), de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) {
log_debug_errno(errno, "Failed to stat file %s while vacuuming, ignoring: %m", de->d_name);
continue;
}
if (!S_ISREG(st.st_mode))
continue;
q = strlen(de->d_name);
if (endswith(de->d_name, ".journal")) {
/* Vacuum archived files. Active files are
* left around */
if (q < 1 + 32 + 1 + 16 + 1 + 16 + 8) {
n_active_files++;
continue;
}
if (de->d_name[q-8-16-1] != '-' ||
de->d_name[q-8-16-1-16-1] != '-' ||
de->d_name[q-8-16-1-16-1-32-1] != '@') {
n_active_files++;
continue;
}
p = strdup(de->d_name);
if (!p) {
r = -ENOMEM;
goto finish;
}
de->d_name[q-8-16-1-16-1] = 0;
if (sd_id128_from_string(de->d_name + q-8-16-1-16-1-32, &seqnum_id) < 0) {
n_active_files++;
continue;
}
if (sscanf(de->d_name + q-8-16-1-16, "%16llx-%16llx.journal", &seqnum, &realtime) != 2) {
n_active_files++;
continue;
}
have_seqnum = true;
} else if (endswith(de->d_name, ".journal~")) {
unsigned long long tmp;
/* Vacuum corrupted files */
if (q < 1 + 16 + 1 + 16 + 8 + 1) {
n_active_files ++;
continue;
}
if (de->d_name[q-1-8-16-1] != '-' ||
de->d_name[q-1-8-16-1-16-1] != '@') {
n_active_files ++;
continue;
}
p = strdup(de->d_name);
if (!p) {
r = -ENOMEM;
goto finish;
}
if (sscanf(de->d_name + q-1-8-16-1-16, "%16llx-%16llx.journal~", &realtime, &tmp) != 2) {
n_active_files ++;
continue;
}
have_seqnum = false;
} else {
/* We do not vacuum unknown files! */
log_debug("Not vacuuming unknown file %s.", de->d_name);
continue;
}
size = 512UL * (uint64_t) st.st_blocks;
r = journal_file_empty(dirfd(d), p);
if (r < 0) {
log_debug_errno(r, "Failed check if %s is empty, ignoring: %m", p);
continue;
}
if (r > 0) {
/* Always vacuum empty non-online files. */
if (unlinkat(dirfd(d), p, 0) >= 0) {
log_full(verbose ? LOG_INFO : LOG_DEBUG,
"Deleted empty archived journal %s/%s (%s).", directory, p, format_bytes(sbytes, sizeof(sbytes), size));
freed += size;
} else if (errno != ENOENT)
log_warning_errno(errno, "Failed to delete empty archived journal %s/%s: %m", directory, p);
continue;
}
patch_realtime(dirfd(d), p, &st, &realtime);
if (!GREEDY_REALLOC(list, n_allocated, n_list + 1)) {
r = -ENOMEM;
goto finish;
}
list[n_list].filename = p;
list[n_list].usage = size;
list[n_list].seqnum = seqnum;
list[n_list].realtime = realtime;
list[n_list].seqnum_id = seqnum_id;
list[n_list].have_seqnum = have_seqnum;
n_list ++;
p = NULL;
sum += size;
}
qsort_safe(list, n_list, sizeof(struct vacuum_info), vacuum_compare);
for (i = 0; i < n_list; i++) {
unsigned left;
left = n_active_files + n_list - i;
if ((max_retention_usec <= 0 || list[i].realtime >= retention_limit) &&
(max_use <= 0 || sum <= max_use) &&
(n_max_files <= 0 || left <= n_max_files))
break;
if (unlinkat(dirfd(d), list[i].filename, 0) >= 0) {
log_full(verbose ? LOG_INFO : LOG_DEBUG, "Deleted archived journal %s/%s (%s).", directory, list[i].filename, format_bytes(sbytes, sizeof(sbytes), list[i].usage));
freed += list[i].usage;
if (list[i].usage < sum)
sum -= list[i].usage;
else
sum = 0;
} else if (errno != ENOENT)
log_warning_errno(errno, "Failed to delete archived journal %s/%s: %m", directory, list[i].filename);
}
if (oldest_usec && i < n_list && (*oldest_usec == 0 || list[i].realtime < *oldest_usec))
*oldest_usec = list[i].realtime;
r = 0;
finish:
for (i = 0; i < n_list; i++)
free(list[i].filename);
free(list);
log_full(verbose ? LOG_INFO : LOG_DEBUG, "Vacuuming done, freed %s of archived journals on disk.", format_bytes(sbytes, sizeof(sbytes), freed));
return r;
}
int parse_sleep_config(const char *verb, char ***modes, char ***states) {
_cleanup_strv_free_ char
**suspend_mode = NULL, **suspend_state = NULL,
**hibernate_mode = NULL, **hibernate_state = NULL,
**hybrid_mode = NULL, **hybrid_state = NULL;
const ConfigTableItem items[] = {
{ "Sleep", "SuspendMode", config_parse_strv, 0, &suspend_mode },
{ "Sleep", "SuspendState", config_parse_strv, 0, &suspend_state },
{ "Sleep", "HibernateMode", config_parse_strv, 0, &hibernate_mode },
{ "Sleep", "HibernateState", config_parse_strv, 0, &hibernate_state },
{ "Sleep", "HybridSleepMode", config_parse_strv, 0, &hybrid_mode },
{ "Sleep", "HybridSleepState", config_parse_strv, 0, &hybrid_state },
{}};
int r;
FILE _cleanup_fclose_ *f;
f = fopen(PKGSYSCONFDIR "/sleep.conf", "re");
if (!f)
log_full(errno == ENOENT ? LOG_DEBUG: LOG_WARNING,
"Failed to open configuration file " PKGSYSCONFDIR "/sleep.conf: %m");
else {
r = config_parse(NULL, PKGSYSCONFDIR "/sleep.conf", f, "Sleep\0",
config_item_table_lookup, (void*) items, false, false, NULL);
if (r < 0)
log_warning("Failed to parse configuration file: %s", strerror(-r));
}
if (streq(verb, "suspend")) {
/* empty by default */
*modes = suspend_mode;
if (suspend_state)
*states = suspend_state;
else
*states = strv_split_nulstr("mem\0standby\0freeze\0");
suspend_mode = suspend_state = NULL;
} else if (streq(verb, "hibernate")) {
if (hibernate_mode)
*modes = hibernate_mode;
else
*modes = strv_split_nulstr("platform\0shutdown\0");
if (hibernate_state)
*states = hibernate_state;
else
*states = strv_split_nulstr("disk\0");
hibernate_mode = hibernate_state = NULL;
} else if (streq(verb, "hybrid-sleep")) {
if (hybrid_mode)
*modes = hybrid_mode;
else
*modes = strv_split_nulstr("suspend\0platform\0shutdown\0");
if (hybrid_state)
*states = hybrid_state;
else
*states = strv_split_nulstr("disk\0");
hybrid_mode = hybrid_state = NULL;
} else
assert_not_reached("what verb");
if (!modes || !states) {
strv_free(*modes);
strv_free(*states);
return log_oom();
}
return 0;
}
/* Go through the file and parse each line */
int config_parse(const char *unit,
const char *filename,
FILE *f,
const char *sections,
ConfigItemLookup lookup,
const void *table,
ConfigParseFlags flags,
void *userdata) {
_cleanup_free_ char *section = NULL, *continuation = NULL;
_cleanup_fclose_ FILE *ours = NULL;
unsigned line = 0, section_line = 0;
bool section_ignored = false;
int r;
assert(filename);
assert(lookup);
if (!f) {
f = ours = fopen(filename, "re");
if (!f) {
/* Only log on request, except for ENOENT,
* since we return 0 to the caller. */
if ((flags & CONFIG_PARSE_WARN) || errno == ENOENT)
log_full(errno == ENOENT ? LOG_DEBUG : LOG_ERR,
"Failed to open configuration file '%s': %m", filename);
return errno == ENOENT ? 0 : -errno;
}
}
fd_warn_permissions(filename, fileno(f));
for (;;) {
_cleanup_free_ char *buf = NULL;
bool escaped = false;
char *l, *p, *e;
r = read_line(f, LONG_LINE_MAX, &buf);
if (r == 0)
break;
if (r == -ENOBUFS) {
if (flags & CONFIG_PARSE_WARN)
log_error_errno(r, "%s:%u: Line too long", filename, line);
return r;
}
if (r < 0) {
if (CONFIG_PARSE_WARN)
log_error_errno(r, "%s:%u: Error while reading configuration file: %m", filename, line);
return r;
}
l = buf;
if (!(flags & CONFIG_PARSE_REFUSE_BOM)) {
char *q;
q = startswith(buf, UTF8_BYTE_ORDER_MARK);
if (q) {
l = q;
flags |= CONFIG_PARSE_REFUSE_BOM;
}
}
if (continuation) {
if (strlen(continuation) + strlen(l) > LONG_LINE_MAX) {
if (flags & CONFIG_PARSE_WARN)
log_error("%s:%u: Continuation line too long", filename, line);
return -ENOBUFS;
}
if (!strextend(&continuation, l, NULL)) {
if (flags & CONFIG_PARSE_WARN)
log_oom();
return -ENOMEM;
}
p = continuation;
} else
p = l;
for (e = p; *e; e++) {
if (escaped)
escaped = false;
else if (*e == '\\')
escaped = true;
}
if (escaped) {
*(e-1) = ' ';
if (!continuation) {
continuation = strdup(l);
if (!continuation) {
if (flags & CONFIG_PARSE_WARN)
log_oom();
return -ENOMEM;
}
}
continue;
}
r = parse_line(unit,
filename,
++line,
sections,
lookup,
table,
flags,
§ion,
§ion_line,
§ion_ignored,
p,
userdata);
if (r < 0) {
if (flags & CONFIG_PARSE_WARN)
log_warning_errno(r, "%s:%u: Failed to parse file: %m", filename, line);
return r;
}
continuation = mfree(continuation);
}
return 0;
}
/**
* This function is the only log function which should be called from the simulation platform. Actually,
* it is a demultiplexer which calls the correct function depending on the current configuration of the
* platform. Note that this function only returns a pointer to a malloc'd area which contains the
* state buffers. This means that this memory area cannot be used as-is, but should be wrapped
* into a state_t structure, which gives information about the simulation state pointer (defined
* via <SetState>() by the application-level code and the lvt associated with the log.
* This is done implicitly by the <LogState>() function, which in turn connects the newly taken
* snapshot with the currencly-scheduled LP.
* Therefore, any point of the simulator which wants to take a (real) log, shouldn't call directly this
* function, rather <LogState>() should be used, after having correctly set current_lp and current_lvt.
*
* @author Alessandro Pellegrini
*
* @param lid The logical process' local identifier
* @return A pointer to a malloc()'d memory area which contains the log of the current simulation state,
* along with the relative meta-data which can be used to perform a restore operation.
*/
void *log_state(int lid) {
statistics_post_lp_data(lid, STAT_CKPT, 1.0);
return log_full(lid);
}
