static int process_dunder(RemoteSource *source, char *line, size_t n) {
const char *timestamp;
int r;
assert(line);
assert(n > 0);
assert(line[n-1] == '\n');
/* XXX: is it worth to support timestamps in extended format?
* We don't produce them, but who knows... */
timestamp = startswith(line, "__CURSOR=");
if (timestamp)
/* ignore __CURSOR */
return 1;
timestamp = startswith(line, "__REALTIME_TIMESTAMP=");
if (timestamp) {
long long unsigned x;
line[n-1] = '\0';
r = safe_atollu(timestamp, &x);
if (r < 0)
log_warning("Failed to parse __REALTIME_TIMESTAMP: '%s'", timestamp);
else
source->ts.realtime = x;
return r < 0 ? r : 1;
}
timestamp = startswith(line, "__MONOTONIC_TIMESTAMP=");
if (timestamp) {
long long unsigned x;
line[n-1] = '\0';
r = safe_atollu(timestamp, &x);
if (r < 0)
log_warning("Failed to parse __MONOTONIC_TIMESTAMP: '%s'", timestamp);
else
source->ts.monotonic = x;
return r < 0 ? r : 1;
}
timestamp = startswith(line, "__");
if (timestamp) {
log_notice("Unknown dunder line %s", line);
return 1;
}
/* no dunder */
return 0;
}
static bool enough_memory_for_hibernation(void) {
_cleanup_free_ char *active = NULL;
unsigned long long act = 0;
size_t size = 0, used = 0;
int r;
r = hibernation_partition_size(&size, &used);
if (r < 0)
return false;
r = get_proc_field("/proc/meminfo", "Active(anon)", WHITESPACE, &active);
if (r < 0) {
log_error_errno(r, "Failed to retrieve Active(anon) from /proc/meminfo: %m");
return false;
}
r = safe_atollu(active, &act);
if (r < 0) {
log_error_errno(r, "Failed to parse Active(anon) from /proc/meminfo: %s: %m",
active);
return false;
}
r = act <= (size - used) * HIBERNATION_SWAP_THRESHOLD;
log_debug("Hibernation is %spossible, Active(anon)=%llu kB, size=%zu kB, used=%zu kB, threshold=%.2g%%",
r ? "" : "im", act, size, used, 100*HIBERNATION_SWAP_THRESHOLD);
return r;
}
/**
* udev_device_get_seqnum:
* @udev_device: udev device
*
* This is only valid if the device was received through a monitor. Devices read from
* sys do not have a sequence number.
*
* Returns: the kernel event sequence number, or 0 if there is no sequence number available.
**/
_public_ unsigned long long int udev_device_get_seqnum(struct udev_device *udev_device)
{
const char *seqnum;
unsigned long long ret;
int r;
assert_return_errno(udev_device, 0, EINVAL);
r = sd_device_get_property_value(udev_device->device, "SEQNUM", &seqnum);
if (r == -ENOENT)
return 0;
else if (r < 0) {
errno = -r;
return 0;
}
r = safe_atollu(seqnum, &ret);
if (r < 0) {
errno = -r;
return 0;
}
return ret;
}
static int parse_argv(int argc, char *argv[]) {
enum {
ARG_VERSION = 0x100,
ARG_FILES_MAX,
ARG_FILE_SIZE_MAX,
ARG_TIMEOUT
};
static const struct option options[] = {
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, ARG_VERSION },
{ "files-max", required_argument, NULL, ARG_FILES_MAX },
{ "file-size-max", required_argument, NULL, ARG_FILE_SIZE_MAX },
{ "timeout", required_argument, NULL, ARG_TIMEOUT },
{}
};
int c;
assert(argc >= 0);
assert(argv);
while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) {
switch (c) {
case 'h':
return help();
case ARG_VERSION:
puts(PACKAGE_STRING);
puts(SYSTEMD_FEATURES);
return 0;
case ARG_FILES_MAX:
if (safe_atou(optarg, &arg_files_max) < 0 || arg_files_max <= 0) {
log_error("Failed to parse maximum number of files %s.", optarg);
return -EINVAL;
}
break;
case ARG_FILE_SIZE_MAX: {
unsigned long long ull;
if (safe_atollu(optarg, &ull) < 0 || ull <= 0) {
log_error("Failed to parse maximum file size %s.", optarg);
return -EINVAL;
}
arg_file_size_max = (off_t) ull;
break;
}
case ARG_TIMEOUT:
if (parse_sec(optarg, &arg_timeout) < 0 || arg_timeout <= 0) {
log_error("Failed to parse timeout %s.", optarg);
return -EINVAL;
}
break;
case '?':
return -EINVAL;
default:
assert_not_reached("Unhandled option");
}
}
if (optind != argc-1 &&
optind != argc-2) {
help();
return -EINVAL;
}
return 1;
}
static void dev_kmsg_record(Server *s, const char *p, size_t l) {
_cleanup_free_ char *message = NULL, *syslog_priority = NULL, *syslog_pid = NULL, *syslog_facility = NULL, *syslog_identifier = NULL, *source_time = NULL, *identifier = NULL, *pid = NULL;
struct iovec iovec[N_IOVEC_META_FIELDS + 7 + N_IOVEC_KERNEL_FIELDS + 2 + N_IOVEC_UDEV_FIELDS];
char *kernel_device = NULL;
unsigned long long usec;
size_t n = 0, z = 0, j;
int priority, r;
char *e, *f, *k;
uint64_t serial;
size_t pl;
assert(s);
assert(p);
if (l <= 0)
return;
e = memchr(p, ',', l);
if (!e)
return;
*e = 0;
r = safe_atoi(p, &priority);
if (r < 0 || priority < 0 || priority > 999)
return;
if (s->forward_to_kmsg && (priority & LOG_FACMASK) != LOG_KERN)
return;
l -= (e - p) + 1;
p = e + 1;
e = memchr(p, ',', l);
if (!e)
return;
*e = 0;
r = safe_atou64(p, &serial);
if (r < 0)
return;
if (s->kernel_seqnum) {
/* We already read this one? */
if (serial < *s->kernel_seqnum)
return;
/* Did we lose any? */
if (serial > *s->kernel_seqnum)
server_driver_message(s, 0,
"MESSAGE_ID=" SD_MESSAGE_JOURNAL_MISSED_STR,
LOG_MESSAGE("Missed %"PRIu64" kernel messages",
serial - *s->kernel_seqnum),
NULL);
/* Make sure we never read this one again. Note that
* we always store the next message serial we expect
* here, simply because this makes handling the first
* message with serial 0 easy. */
*s->kernel_seqnum = serial + 1;
}
l -= (e - p) + 1;
p = e + 1;
f = memchr(p, ';', l);
if (!f)
return;
/* Kernel 3.6 has the flags field, kernel 3.5 lacks that */
e = memchr(p, ',', l);
if (!e || f < e)
e = f;
*e = 0;
r = safe_atollu(p, &usec);
if (r < 0)
return;
l -= (f - p) + 1;
p = f + 1;
e = memchr(p, '\n', l);
if (!e)
return;
*e = 0;
pl = e - p;
l -= (e - p) + 1;
k = e + 1;
for (j = 0; l > 0 && j < N_IOVEC_KERNEL_FIELDS; j++) {
char *m;
/* Metadata fields attached */
if (*k != ' ')
break;
k++, l--;
e = memchr(k, '\n', l);
if (!e)
return;
*e = 0;
if (cunescape_length_with_prefix(k, e - k, "_KERNEL_", UNESCAPE_RELAX, &m) < 0)
break;
if (startswith(m, "_KERNEL_DEVICE="))
kernel_device = m + 15;
iovec[n++] = IOVEC_MAKE_STRING(m);
z++;
l -= (e - k) + 1;
k = e + 1;
}
if (kernel_device) {
struct udev_device *ud;
ud = udev_device_new_from_device_id(s->udev, kernel_device);
if (ud) {
const char *g;
struct udev_list_entry *ll;
char *b;
g = udev_device_get_devnode(ud);
if (g) {
b = strappend("_UDEV_DEVNODE=", g);
if (b) {
iovec[n++] = IOVEC_MAKE_STRING(b);
z++;
}
}
g = udev_device_get_sysname(ud);
if (g) {
b = strappend("_UDEV_SYSNAME=", g);
if (b) {
iovec[n++] = IOVEC_MAKE_STRING(b);
z++;
}
}
j = 0;
ll = udev_device_get_devlinks_list_entry(ud);
udev_list_entry_foreach(ll, ll) {
if (j > N_IOVEC_UDEV_FIELDS)
break;
g = udev_list_entry_get_name(ll);
if (g) {
b = strappend("_UDEV_DEVLINK=", g);
if (b) {
iovec[n++] = IOVEC_MAKE_STRING(b);
z++;
}
}
j++;
}
udev_device_unref(ud);
}
}
if (asprintf(&source_time, "_SOURCE_MONOTONIC_TIMESTAMP=%llu", usec) >= 0)
iovec[n++] = IOVEC_MAKE_STRING(source_time);
iovec[n++] = IOVEC_MAKE_STRING("_TRANSPORT=kernel");
if (asprintf(&syslog_priority, "PRIORITY=%i", priority & LOG_PRIMASK) >= 0)
iovec[n++] = IOVEC_MAKE_STRING(syslog_priority);
if (asprintf(&syslog_facility, "SYSLOG_FACILITY=%i", LOG_FAC(priority)) >= 0)
iovec[n++] = IOVEC_MAKE_STRING(syslog_facility);
if ((priority & LOG_FACMASK) == LOG_KERN)
iovec[n++] = IOVEC_MAKE_STRING("SYSLOG_IDENTIFIER=kernel");
else {
pl -= syslog_parse_identifier((const char**) &p, &identifier, &pid);
/* Avoid any messages we generated ourselves via
* log_info() and friends. */
if (pid && is_us(pid))
goto finish;
if (identifier) {
syslog_identifier = strappend("SYSLOG_IDENTIFIER=", identifier);
if (syslog_identifier)
iovec[n++] = IOVEC_MAKE_STRING(syslog_identifier);
}
if (pid) {
syslog_pid = strappend("SYSLOG_PID=", pid);
if (syslog_pid)
iovec[n++] = IOVEC_MAKE_STRING(syslog_pid);
}
}
if (cunescape_length_with_prefix(p, pl, "MESSAGE=", UNESCAPE_RELAX, &message) >= 0)
iovec[n++] = IOVEC_MAKE_STRING(message);
server_dispatch_message(s, iovec, n, ELEMENTSOF(iovec), NULL, NULL, priority, 0);
finish:
for (j = 0; j < z; j++)
free(iovec[j].iov_base);
}
