*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
+//config:config SYSLOGD
+//config: bool "syslogd (13 kb)"
+//config: default y
+//config: help
+//config: The syslogd utility is used to record logs of all the
+//config: significant events that occur on a system. Every
+//config: message that is logged records the date and time of the
+//config: event, and will generally also record the name of the
+//config: application that generated the message. When used in
+//config: conjunction with klogd, messages from the Linux kernel
+//config: can also be recorded. This is terribly useful,
+//config: especially for finding what happened when something goes
+//config: wrong. And something almost always will go wrong if
+//config: you wait long enough....
+//config:
+//config:config FEATURE_ROTATE_LOGFILE
+//config: bool "Rotate message files"
+//config: default y
+//config: depends on SYSLOGD
+//config: help
+//config: This enables syslogd to rotate the message files
+//config: on his own. No need to use an external rotate script.
+//config:
+//config:config FEATURE_REMOTE_LOG
+//config: bool "Remote Log support"
+//config: default y
+//config: depends on SYSLOGD
+//config: help
+//config: When you enable this feature, the syslogd utility can
+//config: be used to send system log messages to another system
+//config: connected via a network. This allows the remote
+//config: machine to log all the system messages, which can be
+//config: terribly useful for reducing the number of serial
+//config: cables you use. It can also be a very good security
+//config: measure to prevent system logs from being tampered with
+//config: by an intruder.
+//config:
+//config:config FEATURE_SYSLOGD_DUP
+//config: bool "Support -D (drop dups) option"
+//config: default y
+//config: depends on SYSLOGD
+//config: help
+//config: Option -D instructs syslogd to drop consecutive messages
+//config: which are totally the same.
+//config:
+//config:config FEATURE_SYSLOGD_CFG
+//config: bool "Support syslog.conf"
+//config: default y
+//config: depends on SYSLOGD
+//config: help
+//config: Supports restricted syslogd config. See docs/syslog.conf.txt
+//config:
+//config:config FEATURE_SYSLOGD_PRECISE_TIMESTAMPS
+//config: bool "Include milliseconds in timestamps"
+//config: default n
+//config: depends on SYSLOGD
+//config: help
+//config: Includes milliseconds (HH:MM:SS.mmm) in timestamp when
+//config: timestamps are added.
+//config:
+//config:config FEATURE_SYSLOGD_READ_BUFFER_SIZE
+//config: int "Read buffer size in bytes"
+//config: default 256
+//config: range 256 20000
+//config: depends on SYSLOGD
+//config: help
+//config: This option sets the size of the syslog read buffer.
+//config: Actual memory usage increases around five times the
+//config: change done here.
+//config:
+//config:config FEATURE_IPC_SYSLOG
+//config: bool "Circular Buffer support"
+//config: default y
+//config: depends on SYSLOGD
+//config: help
+//config: When you enable this feature, the syslogd utility will
+//config: use a circular buffer to record system log messages.
+//config: When the buffer is filled it will continue to overwrite
+//config: the oldest messages. This can be very useful for
+//config: systems with little or no permanent storage, since
+//config: otherwise system logs can eventually fill up your
+//config: entire filesystem, which may cause your system to
+//config: break badly.
+//config:
+//config:config FEATURE_IPC_SYSLOG_BUFFER_SIZE
+//config: int "Circular buffer size in Kbytes (minimum 4KB)"
+//config: default 16
+//config: range 4 2147483647
+//config: depends on FEATURE_IPC_SYSLOG
+//config: help
+//config: This option sets the size of the circular buffer
+//config: used to record system log messages.
+//config:
+//config:config FEATURE_KMSG_SYSLOG
+//config: bool "Linux kernel printk buffer support"
+//config: default y
+//config: depends on SYSLOGD
+//config: select PLATFORM_LINUX
+//config: help
+//config: When you enable this feature, the syslogd utility will
+//config: write system log message to the Linux kernel's printk buffer.
+//config: This can be used as a smaller alternative to the syslogd IPC
+//config: support, as klogd and logread aren't needed.
+//config:
+//config: NOTICE: Syslog facilities in log entries needs kernel 3.5+.
+
+//applet:IF_SYSLOGD(APPLET(syslogd, BB_DIR_SBIN, BB_SUID_DROP))
+
+//kbuild:lib-$(CONFIG_SYSLOGD) += syslogd_and_logger.o
//usage:#define syslogd_trivial_usage
//usage: "[OPTIONS]"
//usage: IF_FEATURE_KMSG_SYSLOG(
//usage: "\n -K Log to kernel printk buffer (use dmesg to read it)"
//usage: )
-//usage: "\n -O FILE Log to FILE (default:/var/log/messages, stdout if -)"
+//usage: "\n -O FILE Log to FILE (default: /var/log/messages, stdout if -)"
//usage: IF_FEATURE_ROTATE_LOGFILE(
-//usage: "\n -s SIZE Max size (KB) before rotation (default:200KB, 0=off)"
-//usage: "\n -b N N rotated logs to keep (default:1, max=99, 0=purge)"
+//usage: "\n -s SIZE Max size (KB) before rotation (default 200KB, 0=off)"
+//usage: "\n -b N N rotated logs to keep (default 1, max 99, 0=purge)"
//usage: )
//usage: "\n -l N Log only messages more urgent than prio N (1-8)"
//usage: "\n -S Smaller output"
+//usage: "\n -t Strip client-generated timestamps"
//usage: IF_FEATURE_SYSLOGD_DUP(
//usage: "\n -D Drop duplicates"
//usage: )
//usage: IF_FEATURE_SYSLOGD_CFG(
//usage: "\n -f FILE Use FILE as config (default:/etc/syslog.conf)"
//usage: )
-/* //usage: "\n -m MIN Minutes between MARK lines (default:20, 0=off)" */
+/* //usage: "\n -m MIN Minutes between MARK lines (default 20, 0=off)" */
//usage:
//usage:#define syslogd_example_usage
//usage: "$ syslogd -R masterlog:514\n"
/* ...then copy to parsebuf, escaping control chars */
/* (can grow x2 max) */
char parsebuf[MAX_READ*2];
- /* ...then sprintf into printbuf, adding timestamp (15 chars),
+ /* ...then sprintf into printbuf, adding timestamp (15 or 19 chars),
* host (64), fac.prio (20) to the message */
/* (growth by: 15 + 64 + 20 + delims = ~110) */
char printbuf[MAX_READ*2 + 128];
OPTBIT_outfile, // -O
OPTBIT_loglevel, // -l
OPTBIT_small, // -S
+ OPTBIT_timestamp, // -t
IF_FEATURE_ROTATE_LOGFILE(OPTBIT_filesize ,) // -s
IF_FEATURE_ROTATE_LOGFILE(OPTBIT_rotatecnt ,) // -b
IF_FEATURE_REMOTE_LOG( OPTBIT_remotelog ,) // -R
OPT_outfile = 1 << OPTBIT_outfile ,
OPT_loglevel = 1 << OPTBIT_loglevel,
OPT_small = 1 << OPTBIT_small ,
+ OPT_timestamp = 1 << OPTBIT_timestamp,
OPT_filesize = IF_FEATURE_ROTATE_LOGFILE((1 << OPTBIT_filesize )) + 0,
OPT_rotatecnt = IF_FEATURE_ROTATE_LOGFILE((1 << OPTBIT_rotatecnt )) + 0,
OPT_remotelog = IF_FEATURE_REMOTE_LOG( (1 << OPTBIT_remotelog )) + 0,
OPT_dup = IF_FEATURE_SYSLOGD_DUP( (1 << OPTBIT_dup )) + 0,
OPT_cfg = IF_FEATURE_SYSLOGD_CFG( (1 << OPTBIT_cfg )) + 0,
OPT_kmsg = IF_FEATURE_KMSG_SYSLOG( (1 << OPTBIT_kmsg )) + 0,
-
};
-#define OPTION_STR "m:nO:l:S" \
+#define OPTION_STR "m:nO:l:St" \
IF_FEATURE_ROTATE_LOGFILE("s:" ) \
IF_FEATURE_ROTATE_LOGFILE("b:" ) \
- IF_FEATURE_REMOTE_LOG( "R:" ) \
+ IF_FEATURE_REMOTE_LOG( "R:*") \
IF_FEATURE_REMOTE_LOG( "L" ) \
IF_FEATURE_IPC_SYSLOG( "C::") \
IF_FEATURE_SYSLOGD_DUP( "D" ) \
primap = 0xff; /* all 8 log levels enabled */
else {
uint8_t priority;
- code = find_by_name(t, prioritynames);
+ code = find_by_name(t, bb_prioritynames);
if (!code)
goto cfgerr;
primap = 0;
next_facility = strchr(t, ',');
if (next_facility)
*next_facility++ = '\0';
- code = find_by_name(t, facilitynames);
+ code = find_by_name(t, bb_facilitynames);
if (!code)
goto cfgerr;
/* "mark" is not a real facility, skip it */
G.shmid = shmget(KEY_ID, G.shm_size, IPC_CREAT | 0644);
if (G.shmid == -1) {
- bb_perror_msg_and_die("shmget");
+ bb_simple_perror_msg_and_die("shmget");
}
G.shbuf = shmat(G.shmid, NULL, 0);
if (G.shbuf == (void*) -1L) { /* shmat has bizarre error return */
- bb_perror_msg_and_die("shmat");
+ bb_simple_perror_msg_and_die("shmat");
}
memset(G.shbuf, 0, G.shm_size);
if (G.s_semid != -1)
return;
}
- bb_perror_msg_and_die("semget");
+ bb_simple_perror_msg_and_die("semget");
}
}
int len;
if (semop(G.s_semid, G.SMwdn, 3) == -1) {
- bb_perror_msg_and_die("SMwdn");
+ bb_simple_perror_msg_and_die("SMwdn");
}
/* Circular Buffer Algorithm:
goto again;
}
if (semop(G.s_semid, G.SMwup, 1) == -1) {
- bb_perror_msg_and_die("SMwup");
+ bb_simple_perror_msg_and_die("SMwup");
}
if (DEBUG)
printf("tail:%d\n", G.shbuf->tail);
{
const CODE *c_pri, *c_fac;
- c_fac = find_by_val(LOG_FAC(pri) << 3, facilitynames);
+ c_fac = find_by_val(LOG_FAC(pri) << 3, bb_facilitynames);
if (c_fac) {
- c_pri = find_by_val(LOG_PRI(pri), prioritynames);
+ c_pri = find_by_val(LOG_PRI(pri), bb_prioritynames);
if (c_pri) {
snprintf(res20, 20, "%s.%s", c_fac->c_name, c_pri->c_name);
return;
* that there is no timestamp, short-circuiting the test. */
static void timestamp_and_log(int pri, char *msg, int len)
{
- char *timestamp;
+ char *timestamp = NULL;
time_t now;
/* Jan 18 00:11:22 msg... */
/* 01234567890123456 */
- if (len < 16 || msg[3] != ' ' || msg[6] != ' '
- || msg[9] != ':' || msg[12] != ':' || msg[15] != ' '
+ if (len >= 16 && msg[3] == ' ' && msg[6] == ' '
+ && msg[9] == ':' && msg[12] == ':' && msg[15] == ' '
) {
- time(&now);
+ if (!(option_mask32 & OPT_timestamp)) {
+ /* use message timestamp */
+ timestamp = msg;
+ now = 0;
+ }
+ msg += 16;
+ }
+
+#if ENABLE_FEATURE_SYSLOGD_PRECISE_TIMESTAMPS
+ if (!timestamp) {
+ struct timeval tv;
+ gettimeofday(&tv, NULL);
+ now = tv.tv_sec;
timestamp = ctime(&now) + 4; /* skip day of week */
+ /* overwrite year by milliseconds, zero terminate */
+ sprintf(timestamp + 15, ".%03u", (unsigned)tv.tv_usec / 1000u);
} else {
- now = 0;
- timestamp = msg;
- msg += 16;
+ timestamp[15] = '\0';
+ }
+#else
+ if (!timestamp) {
+ time(&now);
+ timestamp = ctime(&now) + 4; /* skip day of week */
}
timestamp[15] = '\0';
+#endif
if (option_mask32 & OPT_kmsg) {
log_to_kmsg(pri, msg);
int sock_fd;
char *dev_log_name;
-#if ENABLE_FEATURE_SYSTEMD
- if (sd_listen_fds() == 1)
- return SD_LISTEN_FDS_START;
-#endif
-
memset(&sunx, 0, sizeof(sunx));
sunx.sun_family = AF_UNIX;
} /* while (!bb_got_signal) */
timestamp_and_log_internal("syslogd exiting");
- remove_pidfile(CONFIG_PID_FILE_PATH "/syslogd.pid");
+ remove_pidfile_std_path_and_ext("syslogd");
ipcsyslog_cleanup();
if (option_mask32 & OPT_kmsg)
kmsg_cleanup();
INIT_G();
- /* No non-option params, -R can occur multiple times */
- opt_complementary = "=0" IF_FEATURE_REMOTE_LOG(":R::");
- opts = getopt32(argv, OPTION_STR, OPTION_PARAM);
+ /* No non-option params */
+ opts = getopt32(argv, "^"OPTION_STR"\0""=0", OPTION_PARAM);
#if ENABLE_FEATURE_REMOTE_LOG
while (remoteAddrList) {
remoteHost_t *rh = xzalloc(sizeof(*rh));
}
//umask(0); - why??
- write_pidfile(CONFIG_PID_FILE_PATH "/syslogd.pid");
+ write_pidfile_std_path_and_ext("syslogd");
do_syslogd();
/* return EXIT_SUCCESS; */
projects / oweals / busybox.git / blobdiff