/*
* Copyright 2004-2020 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU Lesser General Public License
* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
*/
#include <crm_internal.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <sys/utsname.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <limits.h>
#include <ctype.h>
#include <pwd.h>
#include <grp.h>
#include <time.h>
#include <libgen.h>
#include <signal.h>
#include <bzlib.h>
#include <qb/qbdefs.h>
#include <crm/crm.h>
#include <crm/common/mainloop.h>
unsigned int crm_log_level = LOG_INFO;
unsigned int crm_trace_nonlog = 0;
bool pcmk__is_daemon = false;
static unsigned int crm_log_priority = LOG_NOTICE;
static GLogFunc glib_log_default = NULL;
static gboolean crm_tracing_enabled(void);
static void
crm_glib_handler(const gchar * log_domain, GLogLevelFlags flags, const gchar * message,
gpointer user_data)
{
int log_level = LOG_WARNING;
GLogLevelFlags msg_level = (flags & G_LOG_LEVEL_MASK);
static struct qb_log_callsite *glib_cs = NULL;
if (glib_cs == NULL) {
glib_cs = qb_log_callsite_get(__func__, __FILE__, "glib-handler",
LOG_DEBUG, __LINE__, crm_trace_nonlog);
}
switch (msg_level) {
case G_LOG_LEVEL_CRITICAL:
log_level = LOG_CRIT;
if (crm_is_callsite_active(glib_cs, LOG_DEBUG, 0) == FALSE) {
/* log and record how we got here */
crm_abort(__FILE__, __func__, __LINE__, message, TRUE, TRUE);
}
break;
case G_LOG_LEVEL_ERROR:
log_level = LOG_ERR;
break;
case G_LOG_LEVEL_MESSAGE:
log_level = LOG_NOTICE;
break;
case G_LOG_LEVEL_INFO:
log_level = LOG_INFO;
break;
case G_LOG_LEVEL_DEBUG:
log_level = LOG_DEBUG;
break;
case G_LOG_LEVEL_WARNING:
case G_LOG_FLAG_RECURSION:
case G_LOG_FLAG_FATAL:
case G_LOG_LEVEL_MASK:
log_level = LOG_WARNING;
break;
}
do_crm_log(log_level, "%s: %s", log_domain, message);
}
#ifndef NAME_MAX
# define NAME_MAX 256
#endif
/*!
* \internal
* \brief Write out a blackbox (enabling blackboxes if needed)
*
* \param[in] nsig Signal number that was received
*
* \note This is a true signal handler, and so must be async-safe.
*/
static void
crm_trigger_blackbox(int nsig)
{
if(nsig == SIGTRAP) {
/* Turn it on if it wasn't already */
crm_enable_blackbox(nsig);
}
crm_write_blackbox(nsig, NULL);
}
void
crm_log_deinit(void)
{
if (glib_log_default != NULL) {
g_log_set_default_handler(glib_log_default, NULL);
}
}
#define FMT_MAX 256
static void
set_format_string(int method, const char *daemon)
{
if (method == QB_LOG_SYSLOG) {
// The system log gets a simplified, user-friendly format
crm_extended_logging(method, QB_FALSE);
qb_log_format_set(method, "%g %p: %b");
} else {
// Everything else gets more detail, for advanced troubleshooting
int offset = 0;
char fmt[FMT_MAX];
if (method > QB_LOG_STDERR) {
struct utsname res;
const char *nodename = "localhost";
if (uname(&res) == 0) {
nodename = res.nodename;
}
// If logging to file, prefix with timestamp, node name, daemon ID
offset += snprintf(fmt + offset, FMT_MAX - offset,
"%%t %s %-20s[%lu] ",
nodename, daemon, (unsigned long) getpid());
}
// Add function name (in parentheses)
offset += snprintf(fmt + offset, FMT_MAX - offset, "(%%n");
if (crm_tracing_enabled()) {
// When tracing, add file and line number
offset += snprintf(fmt + offset, FMT_MAX - offset, "@%%f:%%l");
}
offset += snprintf(fmt + offset, FMT_MAX - offset, ")");
// Add tag (if any), severity, and actual message
offset += snprintf(fmt + offset, FMT_MAX - offset, " %%g\t%%p: %%b");
CRM_LOG_ASSERT(offset > 0);
qb_log_format_set(method, fmt);
}
}
#define DEFAULT_LOG_FILE CRM_LOG_DIR "/pacemaker.log"
gboolean
crm_add_logfile(const char *filename)
{
bool is_default = false;
static int default_fd = -1;
static gboolean have_logfile = FALSE;
struct stat parent;
int fd = 0, rc = 0;
FILE *logfile = NULL;
char *parent_dir = NULL;
char *filename_cp;
if (filename == NULL && have_logfile == FALSE) {
filename = DEFAULT_LOG_FILE;
}
if ((filename == NULL)
|| pcmk__str_eq(filename, "none", pcmk__str_casei)
|| pcmk__str_eq(filename, "/dev/null", pcmk__str_none)) {
return FALSE; // User doesn't want logging, so there's nothing to do
} else if (pcmk__str_eq(filename, DEFAULT_LOG_FILE, pcmk__str_none)) {
is_default = TRUE;
}
if(is_default && default_fd >= 0) {
return TRUE; /* Nothing to do */
}
/* Check the parent directory */
filename_cp = strdup(filename);
parent_dir = dirname(filename_cp);
rc = stat(parent_dir, &parent);
if (rc != 0) {
crm_err("Directory '%s' does not exist: logging to '%s' is disabled", parent_dir, filename);
free(filename_cp);
return FALSE;
}
free(filename_cp);
errno = 0;
logfile = fopen(filename, "a");
if(logfile == NULL) {
crm_err("%s (%d): Logging to '%s' as uid=%u, gid=%u is disabled",
pcmk_strerror(errno), errno, filename, geteuid(), getegid());
return FALSE;
}
/* Check/Set permissions if we're root */
if (geteuid() == 0) {
struct stat st;
uid_t pcmk_uid = 0;
gid_t pcmk_gid = 0;
gboolean fix = FALSE;
int logfd = fileno(logfile);
const char *modestr;
mode_t filemode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP;
rc = fstat(logfd, &st);
if (rc < 0) {
crm_perror(LOG_WARNING, "Cannot stat %s", filename);
fclose(logfile);
return FALSE;
}
if (pcmk_daemon_user(&pcmk_uid, &pcmk_gid) == 0) {
if (st.st_gid != pcmk_gid) {
/* Wrong group */
fix = TRUE;
} else if ((st.st_mode & S_IRWXG) != (S_IRGRP | S_IWGRP)) {
/* Not read/writable by the correct group */
fix = TRUE;
}
}
modestr = getenv("PCMK_logfile_mode");
if (modestr) {
long filemode_l = strtol(modestr, NULL, 8);
if (filemode_l != LONG_MIN && filemode_l != LONG_MAX) {
filemode = (mode_t)filemode_l;
}
}
if (fix) {
rc = fchown(logfd, pcmk_uid, pcmk_gid);
if (rc < 0) {
crm_warn("Cannot change the ownership of %s to user %s and gid %d",
filename, CRM_DAEMON_USER, pcmk_gid);
}
}
if (filemode) {
rc = fchmod(logfd, filemode);
if (rc < 0) {
crm_warn("Cannot change the mode of %s to %o", filename, filemode);
}
fprintf(logfile, "Set r/w permissions for uid=%d, gid=%d on %s\n",
pcmk_uid, pcmk_gid, filename);
if (fflush(logfile) < 0 || fsync(logfd) < 0) {
crm_err("Couldn't write out logfile: %s", filename);
}
}
}
/* Close and reopen with libqb */
fclose(logfile);
fd = qb_log_file_open(filename);
if (fd < 0) {
crm_perror(LOG_WARNING, "Couldn't send additional logging to %s", filename);
return FALSE;
}
if(is_default) {
default_fd = fd;
// Some resource agents will log only if environment variable is set
if (pcmk__env_option("logfile") == NULL) {
pcmk__set_env_option("logfile", filename);
}
} else if(default_fd >= 0) {
crm_notice("Switching to %s", filename);
qb_log_ctl(default_fd, QB_LOG_CONF_ENABLED, QB_FALSE);
}
crm_notice("Additional logging available in %s", filename);
qb_log_ctl(fd, QB_LOG_CONF_ENABLED, QB_TRUE);
/* qb_log_ctl(fd, QB_LOG_CONF_FILE_SYNC, 1); Turn on synchronous writes */
#ifdef HAVE_qb_log_conf_QB_LOG_CONF_MAX_LINE_LEN
// Longer than default, for logging long XML lines
qb_log_ctl(fd, QB_LOG_CONF_MAX_LINE_LEN, 800);
#endif
/* Enable callsites */
crm_update_callsites();
have_logfile = TRUE;
return TRUE;
}
static int blackbox_trigger = 0;
static volatile char *blackbox_file_prefix = NULL;
#ifdef QB_FEATURE_LOG_HIRES_TIMESTAMPS
typedef struct timespec *log_time_t;
#else
typedef time_t log_time_t;
#endif
static void
blackbox_logger(int32_t t, struct qb_log_callsite *cs, log_time_t timestamp,
const char *msg)
{
if(cs && cs->priority < LOG_ERR) {
crm_write_blackbox(SIGTRAP, cs); /* Bypass the over-dumping logic */
} else {
crm_write_blackbox(0, cs);
}
}
static void
crm_control_blackbox(int nsig, bool enable)
{
int lpc = 0;
if (blackbox_file_prefix == NULL) {
pid_t pid = getpid();
blackbox_file_prefix = crm_strdup_printf("%s/%s-%lu",
CRM_BLACKBOX_DIR,
crm_system_name,
(unsigned long) pid);
}
if (enable && qb_log_ctl(QB_LOG_BLACKBOX, QB_LOG_CONF_STATE_GET, 0) != QB_LOG_STATE_ENABLED) {
qb_log_ctl(QB_LOG_BLACKBOX, QB_LOG_CONF_SIZE, 5 * 1024 * 1024); /* Any size change drops existing entries */
qb_log_ctl(QB_LOG_BLACKBOX, QB_LOG_CONF_ENABLED, QB_TRUE); /* Setting the size seems to disable it */
/* Enable synchronous logging */
for (lpc = QB_LOG_BLACKBOX; lpc < QB_LOG_TARGET_MAX; lpc++) {
qb_log_ctl(lpc, QB_LOG_CONF_FILE_SYNC, QB_TRUE);
}
crm_notice("Initiated blackbox recorder: %s", blackbox_file_prefix);
/* Save to disk on abnormal termination */
crm_signal_handler(SIGSEGV, crm_trigger_blackbox);
crm_signal_handler(SIGABRT, crm_trigger_blackbox);
crm_signal_handler(SIGILL, crm_trigger_blackbox);
crm_signal_handler(SIGBUS, crm_trigger_blackbox);
crm_signal_handler(SIGFPE, crm_trigger_blackbox);
crm_update_callsites();
blackbox_trigger = qb_log_custom_open(blackbox_logger, NULL, NULL, NULL);
qb_log_ctl(blackbox_trigger, QB_LOG_CONF_ENABLED, QB_TRUE);
crm_trace("Trigger: %d is %d %d", blackbox_trigger,
qb_log_ctl(blackbox_trigger, QB_LOG_CONF_STATE_GET, 0), QB_LOG_STATE_ENABLED);
crm_update_callsites();
} else if (!enable && qb_log_ctl(QB_LOG_BLACKBOX, QB_LOG_CONF_STATE_GET, 0) == QB_LOG_STATE_ENABLED) {
qb_log_ctl(QB_LOG_BLACKBOX, QB_LOG_CONF_ENABLED, QB_FALSE);
/* Disable synchronous logging again when the blackbox is disabled */
for (lpc = QB_LOG_BLACKBOX; lpc < QB_LOG_TARGET_MAX; lpc++) {
qb_log_ctl(lpc, QB_LOG_CONF_FILE_SYNC, QB_FALSE);
}
}
}
void
crm_enable_blackbox(int nsig)
{
crm_control_blackbox(nsig, TRUE);
}
void
crm_disable_blackbox(int nsig)
{
crm_control_blackbox(nsig, FALSE);
}
/*!
* \internal
* \brief Write out a blackbox, if blackboxes are enabled
*
* \param[in] nsig Signal that was received
* \param[in] cs libqb callsite
*
* \note This may be called via a true signal handler and so must be async-safe.
* @TODO actually make this async-safe
*/
void
crm_write_blackbox(int nsig, struct qb_log_callsite *cs)
{
static volatile int counter = 1;
static volatile time_t last = 0;
char buffer[NAME_MAX];
time_t now = time(NULL);
if (blackbox_file_prefix == NULL) {
return;
}
switch (nsig) {
case 0:
case SIGTRAP:
/* The graceful case - such as assertion failure or user request */
if (nsig == 0 && now == last) {
/* Prevent over-dumping */
return;
}
snprintf(buffer, NAME_MAX, "%s.%d", blackbox_file_prefix, counter++);
if (nsig == SIGTRAP) {
crm_notice("Blackbox dump requested, please see %s for contents", buffer);
} else if (cs) {
syslog(LOG_NOTICE,
"Problem detected at %s:%d (%s), please see %s for additional details",
cs->function, cs->lineno, cs->filename, buffer);
} else {
crm_notice("Problem detected, please see %s for additional details", buffer);
}
last = now;
qb_log_blackbox_write_to_file(buffer);
/* Flush the existing contents
* A size change would also work
*/
qb_log_ctl(QB_LOG_BLACKBOX, QB_LOG_CONF_ENABLED, QB_FALSE);
qb_log_ctl(QB_LOG_BLACKBOX, QB_LOG_CONF_ENABLED, QB_TRUE);
break;
default:
/* Do as little as possible, just try to get what we have out
* We logged the filename when the blackbox was enabled
*/
crm_signal_handler(nsig, SIG_DFL);
qb_log_blackbox_write_to_file((const char *)blackbox_file_prefix);
qb_log_ctl(QB_LOG_BLACKBOX, QB_LOG_CONF_ENABLED, QB_FALSE);
raise(nsig);
break;
}
}
gboolean
crm_log_cli_init(const char *entity)
{
return crm_log_init(entity, LOG_ERR, FALSE, FALSE, 0, NULL, TRUE);
}
static const char *
crm_quark_to_string(uint32_t tag)
{
const char *text = g_quark_to_string(tag);
if (text) {
return text;
}
return "";
}
static void
crm_log_filter_source(int source, const char *trace_files, const char *trace_fns,
const char *trace_fmts, const char *trace_tags, const char *trace_blackbox,
struct qb_log_callsite *cs)
{
if (qb_log_ctl(source, QB_LOG_CONF_STATE_GET, 0) != QB_LOG_STATE_ENABLED) {
return;
} else if (cs->tags != crm_trace_nonlog && source == QB_LOG_BLACKBOX) {
/* Blackbox gets everything if enabled */
qb_bit_set(cs->targets, source);
} else if (source == blackbox_trigger && blackbox_trigger > 0) {
/* Should this log message result in the blackbox being dumped */
if (cs->priority <= LOG_ERR) {
qb_bit_set(cs->targets, source);
} else if (trace_blackbox) {
char *key = crm_strdup_printf("%s:%d", cs->function, cs->lineno);
if (strstr(trace_blackbox, key) != NULL) {
qb_bit_set(cs->targets, source);
}
free(key);
}
} else if (source == QB_LOG_SYSLOG) { /* No tracing to syslog */
if (cs->priority <= crm_log_priority && cs->priority <= crm_log_level) {
qb_bit_set(cs->targets, source);
}
/* Log file tracing options... */
} else if (cs->priority <= crm_log_level) {
qb_bit_set(cs->targets, source);
} else if (trace_files && strstr(trace_files, cs->filename) != NULL) {
qb_bit_set(cs->targets, source);
} else if (trace_fns && strstr(trace_fns, cs->function) != NULL) {
qb_bit_set(cs->targets, source);
} else if (trace_fmts && strstr(trace_fmts, cs->format) != NULL) {
qb_bit_set(cs->targets, source);
} else if (trace_tags
&& cs->tags != 0
&& cs->tags != crm_trace_nonlog && g_quark_to_string(cs->tags) != NULL) {
qb_bit_set(cs->targets, source);
}
}
static void
crm_log_filter(struct qb_log_callsite *cs)
{
int lpc = 0;
static int need_init = 1;
static const char *trace_fns = NULL;
static const char *trace_tags = NULL;
static const char *trace_fmts = NULL;
static const char *trace_files = NULL;
static const char *trace_blackbox = NULL;
if (need_init) {
need_init = 0;
trace_fns = getenv("PCMK_trace_functions");
trace_fmts = getenv("PCMK_trace_formats");
trace_tags = getenv("PCMK_trace_tags");
trace_files = getenv("PCMK_trace_files");
trace_blackbox = getenv("PCMK_trace_blackbox");
if (trace_tags != NULL) {
uint32_t tag;
char token[500];
const char *offset = NULL;
const char *next = trace_tags;
do {
offset = next;
next = strchrnul(offset, ',');
snprintf(token, sizeof(token), "%.*s", (int)(next - offset), offset);
tag = g_quark_from_string(token);
crm_info("Created GQuark %u from token '%s' in '%s'", tag, token, trace_tags);
if (next[0] != 0) {
next++;
}
} while (next != NULL && next[0] != 0);
}
}
cs->targets = 0; /* Reset then find targets to enable */
for (lpc = QB_LOG_SYSLOG; lpc < QB_LOG_TARGET_MAX; lpc++) {
crm_log_filter_source(lpc, trace_files, trace_fns, trace_fmts, trace_tags, trace_blackbox,
cs);
}
}
gboolean
crm_is_callsite_active(struct qb_log_callsite *cs, uint8_t level, uint32_t tags)
{
gboolean refilter = FALSE;
if (cs == NULL) {
return FALSE;
}
if (cs->priority != level) {
cs->priority = level;
refilter = TRUE;
}
if (cs->tags != tags) {
cs->tags = tags;
refilter = TRUE;
}
if (refilter) {
crm_log_filter(cs);
}
if (cs->targets == 0) {
return FALSE;
}
return TRUE;
}
void
crm_update_callsites(void)
{
static gboolean log = TRUE;
if (log) {
log = FALSE;
crm_debug
("Enabling callsites based on priority=%d, files=%s, functions=%s, formats=%s, tags=%s",
crm_log_level, getenv("PCMK_trace_files"), getenv("PCMK_trace_functions"),
getenv("PCMK_trace_formats"), getenv("PCMK_trace_tags"));
}
qb_log_filter_fn_set(crm_log_filter);
}
static gboolean
crm_tracing_enabled(void)
{
if (crm_log_level == LOG_TRACE) {
return TRUE;
} else if (getenv("PCMK_trace_files") || getenv("PCMK_trace_functions")
|| getenv("PCMK_trace_formats") || getenv("PCMK_trace_tags")) {
return TRUE;
}
return FALSE;
}
static int
crm_priority2int(const char *name)
{
struct syslog_names {
const char *name;
int priority;
};
static struct syslog_names p_names[] = {
{"emerg", LOG_EMERG},
{"alert", LOG_ALERT},
{"crit", LOG_CRIT},
{"error", LOG_ERR},
{"warning", LOG_WARNING},
{"notice", LOG_NOTICE},
{"info", LOG_INFO},
{"debug", LOG_DEBUG},
{NULL, -1}
};
int lpc;
for (lpc = 0; name != NULL && p_names[lpc].name != NULL; lpc++) {
if (pcmk__str_eq(p_names[lpc].name, name, pcmk__str_none)) {
return p_names[lpc].priority;
}
}
return crm_log_priority;
}
static void
crm_identity(const char *entity, int argc, char **argv)
{
if(crm_system_name != NULL) {
/* Nothing to do */
} else if (entity) {
free(crm_system_name);
crm_system_name = strdup(entity);
} else if (argc > 0 && argv != NULL) {
char *mutable = strdup(argv[0]);
char *modified = basename(mutable);
if (strstr(modified, "lt-") == modified) {
modified += 3;
}
free(crm_system_name);
crm_system_name = strdup(modified);
free(mutable);
} else if (crm_system_name == NULL) {
crm_system_name = strdup("Unknown");
}
setenv("PCMK_service", crm_system_name, 1);
}
void
crm_log_preinit(const char *entity, int argc, char **argv)
{
/* Configure libqb logging with nothing turned on */
int lpc = 0;
int32_t qb_facility = 0;
static bool have_logging = FALSE;
if(have_logging == FALSE) {
have_logging = TRUE;
crm_xml_init(); /* Sets buffer allocation strategy */
if (crm_trace_nonlog == 0) {
crm_trace_nonlog = g_quark_from_static_string("Pacemaker non-logging tracepoint");
}
umask(S_IWGRP | S_IWOTH | S_IROTH);
/* Redirect messages from glib functions to our handler */
glib_log_default = g_log_set_default_handler(crm_glib_handler, NULL);
/* and for good measure... - this enum is a bit field (!) */
g_log_set_always_fatal((GLogLevelFlags) 0); /*value out of range */
/* Who do we log as */
crm_identity(entity, argc, argv);
qb_facility = qb_log_facility2int("local0");
qb_log_init(crm_system_name, qb_facility, LOG_ERR);
crm_log_level = LOG_CRIT;
/* Nuke any syslog activity until it's asked for */
qb_log_ctl(QB_LOG_SYSLOG, QB_LOG_CONF_ENABLED, QB_FALSE);
#ifdef HAVE_qb_log_conf_QB_LOG_CONF_MAX_LINE_LEN
// Shorter than default, generous for what we *should* send to syslog
qb_log_ctl(QB_LOG_SYSLOG, QB_LOG_CONF_MAX_LINE_LEN, 256);
#endif
/* Set format strings and disable threading
* Pacemaker and threads do not mix well (due to the amount of forking)
*/
qb_log_tags_stringify_fn_set(crm_quark_to_string);
for (lpc = QB_LOG_SYSLOG; lpc < QB_LOG_TARGET_MAX; lpc++) {
qb_log_ctl(lpc, QB_LOG_CONF_THREADED, QB_FALSE);
#ifdef HAVE_qb_log_conf_QB_LOG_CONF_ELLIPSIS
// End truncated lines with '...'
qb_log_ctl(lpc, QB_LOG_CONF_ELLIPSIS, QB_TRUE);
#endif
set_format_string(lpc, crm_system_name);
}
}
}
gboolean
crm_log_init(const char *entity, uint8_t level, gboolean daemon, gboolean to_stderr,
int argc, char **argv, gboolean quiet)
{
const char *syslog_priority = NULL;
const char *facility = pcmk__env_option("logfacility");
const char *f_copy = facility;
pcmk__is_daemon = daemon;
crm_log_preinit(entity, argc, argv);
if (level > LOG_TRACE) {
level = LOG_TRACE;
}
if(level > crm_log_level) {
crm_log_level = level;
}
/* Should we log to syslog */
if (facility == NULL) {
if (pcmk__is_daemon) {
facility = "daemon";
} else {
facility = "none";
}
pcmk__set_env_option("logfacility", facility);
}
if (pcmk__str_eq(facility, "none", pcmk__str_casei)) {
quiet = TRUE;
} else {
qb_log_ctl(QB_LOG_SYSLOG, QB_LOG_CONF_FACILITY, qb_log_facility2int(facility));
}
if (pcmk__env_option_enabled(crm_system_name, "debug")) {
/* Override the default setting */
crm_log_level = LOG_DEBUG;
}
/* What lower threshold do we have for sending to syslog */
syslog_priority = pcmk__env_option("logpriority");
if (syslog_priority) {
crm_log_priority = crm_priority2int(syslog_priority);
}
qb_log_filter_ctl(QB_LOG_SYSLOG, QB_LOG_FILTER_ADD, QB_LOG_FILTER_FILE, "*",
crm_log_priority);
// Log to syslog unless requested to be quiet
if (!quiet) {
qb_log_ctl(QB_LOG_SYSLOG, QB_LOG_CONF_ENABLED, QB_TRUE);
}
/* Should we log to stderr */
if (pcmk__env_option_enabled(crm_system_name, "stderr")) {
/* Override the default setting */
to_stderr = TRUE;
}
crm_enable_stderr(to_stderr);
// Log to a file if we're a daemon or user asked for one
{
const char *logfile = pcmk__env_option("logfile");
if (!pcmk__str_eq("none", logfile, pcmk__str_casei)
&& (pcmk__is_daemon || (logfile != NULL))) {
// Daemons always get a log file, unless explicitly set to "none"
crm_add_logfile(logfile);
}
}
if (pcmk__is_daemon
&& pcmk__env_option_enabled(crm_system_name, "blackbox")) {
crm_enable_blackbox(0);
}
/* Summary */
crm_trace("Quiet: %d, facility %s", quiet, f_copy);
pcmk__env_option("logfile");
pcmk__env_option("logfacility");
crm_update_callsites();
/* Ok, now we can start logging... */
// Disable daemon request if user isn't root or Pacemaker daemon user
if (pcmk__is_daemon) {
const char *user = getenv("USER");
if (user != NULL && !pcmk__strcase_any_of(user, "root", CRM_DAEMON_USER, NULL)) {
crm_trace("Not switching to corefile directory for %s", user);
pcmk__is_daemon = false;
}
}
if (pcmk__is_daemon) {
int user = getuid();
const char *base = CRM_CORE_DIR;
struct passwd *pwent = getpwuid(user);
if (pwent == NULL) {
crm_perror(LOG_ERR, "Cannot get name for uid: %d", user);
} else if (!pcmk__strcase_any_of(pwent->pw_name, "root", CRM_DAEMON_USER, NULL)) {
crm_trace("Don't change active directory for regular user: %s", pwent->pw_name);
} else if (chdir(base) < 0) {
crm_perror(LOG_INFO, "Cannot change active directory to %s", base);
} else {
crm_info("Changed active directory to %s", base);
#if 0
{
char path[512];
snprintf(path, 512, "%s-%lu", crm_system_name, (unsigned long) getpid());
mkdir(path, 0750);
chdir(path);
crm_info("Changed active directory to %s/%s/%s", base, pwent->pw_name, path);
}
#endif
}
/* Original meanings from signal(7)
*
* Signal Value Action Comment
* SIGTRAP 5 Core Trace/breakpoint trap
* SIGUSR1 30,10,16 Term User-defined signal 1
* SIGUSR2 31,12,17 Term User-defined signal 2
*
* Our usage is as similar as possible
*/
mainloop_add_signal(SIGUSR1, crm_enable_blackbox);
mainloop_add_signal(SIGUSR2, crm_disable_blackbox);
mainloop_add_signal(SIGTRAP, crm_trigger_blackbox);
} else if (!quiet) {
crm_log_args(argc, argv);
}
return TRUE;
}
/* returns the old value */
unsigned int
set_crm_log_level(unsigned int level)
{
unsigned int old = crm_log_level;
if (level > LOG_TRACE) {
level = LOG_TRACE;
}
crm_log_level = level;
crm_update_callsites();
crm_trace("New log level: %d", level);
return old;
}
void
crm_enable_stderr(int enable)
{
if (enable && qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_STATE_GET, 0) != QB_LOG_STATE_ENABLED) {
qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_ENABLED, QB_TRUE);
crm_update_callsites();
} else if (enable == FALSE) {
qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_ENABLED, QB_FALSE);
}
}
/*!
* \brief Make logging more verbose
*
* If logging to stderr is not already enabled when this function is called,
* enable it. Otherwise, increase the log level by 1.
*
* \param[in] argc Ignored
* \param[in] argv Ignored
*/
void
crm_bump_log_level(int argc, char **argv)
{
if (qb_log_ctl(QB_LOG_STDERR, QB_LOG_CONF_STATE_GET, 0)
!= QB_LOG_STATE_ENABLED) {
crm_enable_stderr(TRUE);
} else {
set_crm_log_level(crm_log_level + 1);
}
}
unsigned int
get_crm_log_level(void)
{
return crm_log_level;
}
/*!
* \brief Log the command line (once)
*
* \param[in] Number of values in \p argv
* \param[in] Command-line arguments (including command name)
*
* \note This function will only log once, even if called with different
* arguments.
*/
void
crm_log_args(int argc, char **argv)
{
static bool logged = false;
gchar *arg_string = NULL;
if ((argc == 0) || (argv == NULL) || logged) {
return;
}
logged = true;
arg_string = g_strjoinv(" ", argv);
crm_notice("Invoked: %s", arg_string);
g_free(arg_string);
}
void
crm_log_output_fn(const char *file, const char *function, int line, int level, const char *prefix,
const char *output)
{
const char *next = NULL;
const char *offset = NULL;
if (level == LOG_NEVER) {
return;
}
if (output == NULL) {
if (level != LOG_STDOUT) {
level = LOG_TRACE;
}
output = "-- empty --";
}
next = output;
do {
offset = next;
next = strchrnul(offset, '\n');
do_crm_log_alias(level, file, function, line, "%s [ %.*s ]", prefix,
(int)(next - offset), offset);
if (next[0] != 0) {
next++;
}
} while (next != NULL && next[0] != 0);
}