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syslogd: reduce data/bss usage. Code size is practically the same.

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This commit is contained in:
Denis Vlasenko 2007-03-15 19:50:46 +00:00
parent bff32ce4d5
commit 5e892bae51
1 changed files with 170 additions and 129 deletions
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277
sysklogd/syslogd.c
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@ -17,47 +17,107 @@
#include <paths.h> #include <paths.h>
#include <sys/un.h> #include <sys/un.h>
/* SYSLOG_NAMES defined to pull some extra junk from syslog.h */ /* SYSLOG_NAMES defined to pull some extra junk from syslog.h: */
/* prioritynames[] and facilitynames[]. uclibc pulls those in _rwdata_! :( */
#define SYSLOG_NAMES #define SYSLOG_NAMES
#include <sys/syslog.h> #include <sys/syslog.h>
#include <sys/uio.h> #include <sys/uio.h>
#if ENABLE_FEATURE_REMOTE_LOG
#include <netinet/in.h>
#endif
#if ENABLE_FEATURE_IPC_SYSLOG
#include <sys/ipc.h>
#include <sys/sem.h>
#include <sys/shm.h>
#endif
#define DEBUG 0 #define DEBUG 0
/* Path for the file where all log messages are written */ // Semaphore operation structures
static const char *logFilePath = "/var/log/messages"; struct shbuf_ds {
static int logFD = -1; int32_t size; // size of data written
int32_t head; // start of message list
int32_t tail; // end of message list
char data[1]; // data/messages
}; // shared memory pointer
struct globals {
const char *logFilePath;
int logFD;
/* This is not very useful, is bloat, and broken: /* This is not very useful, is bloat, and broken:
* can deadlock if alarmed to make MARK while writing to IPC buffer * can deadlock if alarmed to make MARK while writing to IPC buffer
* (semaphores are down but do_mark routine tries to down them again) */ * (semaphores are down but do_mark routine tries to down them again) */
#ifdef SYSLOGD_MARK #ifdef SYSLOGD_MARK
/* interval between marks in seconds */ /* interval between marks in seconds */
static int markInterval = 20 * 60; int markInterval;
#endif #endif
/* level of messages to be locally logged */ /* level of messages to be locally logged */
static int logLevel = 8; int logLevel;
/* localhost's name */
static char localHostName[64];
#if ENABLE_FEATURE_ROTATE_LOGFILE #if ENABLE_FEATURE_ROTATE_LOGFILE
/* max size of message file before being rotated */ /* max size of message file before being rotated */
static unsigned logFileSize = 200 * 1024; unsigned logFileSize;
/* number of rotated message files */ /* number of rotated message files */
static unsigned logFileRotate = 1; unsigned logFileRotate;
static unsigned curFileSize; unsigned curFileSize;
static smallint isRegular; smallint isRegular;
#endif #endif
#if ENABLE_FEATURE_REMOTE_LOG #if ENABLE_FEATURE_REMOTE_LOG
#include <netinet/in.h>
/* udp socket for logging to remote host */ /* udp socket for logging to remote host */
static int remoteFD = -1; int remoteFD;
static len_and_sockaddr* remoteAddr; len_and_sockaddr* remoteAddr;
#endif #endif
#if ENABLE_FEATURE_IPC_SYSLOG
int shmid; // ipc shared memory id
int s_semid; // ipc semaphore id
int shm_size;
struct sembuf SMwup[1];
struct sembuf SMwdn[3];
struct shbuf_ds *shbuf;
#endif
time_t last_log_time;
/* localhost's name */
char localHostName[64];
}; /* struct globals */
static const struct globals init_globals = {
.logFilePath = "/var/log/messages",
.logFD = -1,
#ifdef SYSLOGD_MARK
.markInterval = 20 * 60,
#endif
.logLevel = 8,
#if ENABLE_FEATURE_ROTATE_LOGFILE
.logFileSize = 200 * 1024,
.logFileRotate = 1,
#endif
#if ENABLE_FEATURE_REMOTE_LOG
.remoteFD = -1,
#endif
#if ENABLE_FEATURE_IPC_SYSLOG
.shmid = -1,
.s_semid = -1,
.shm_size = ((CONFIG_FEATURE_IPC_SYSLOG_BUFFER_SIZE)*1024), // default shm size
.SMwup = { {1, -1, IPC_NOWAIT} },
.SMwdn = { {0, 0}, {1, 0}, {1, +1} },
#endif
// FIXME: hidden tail with lotsa zeroes is here....
};
#define G (*ptr_to_globals)
/* We are using bb_common_bufsiz1 for buffering: */ /* We are using bb_common_bufsiz1 for buffering: */
enum { MAX_READ = (BUFSIZ/6) & ~0xf }; enum { MAX_READ = (BUFSIZ/6) & ~0xf };
/* We recv into RECVBUF... (size: MAX_READ ~== BUFSIZ/6) */ /* We recv into RECVBUF... (size: MAX_READ ~== BUFSIZ/6) */
@ -109,7 +169,7 @@ enum {
USE_FEATURE_ROTATE_LOGFILE(,*opt_b) \ USE_FEATURE_ROTATE_LOGFILE(,*opt_b) \
USE_FEATURE_REMOTE_LOG( ,*opt_R) \ USE_FEATURE_REMOTE_LOG( ,*opt_R) \
USE_FEATURE_IPC_SYSLOG( ,*opt_C = NULL) USE_FEATURE_IPC_SYSLOG( ,*opt_C = NULL)
#define OPTION_PARAM &opt_m, &logFilePath, &opt_l \ #define OPTION_PARAM &opt_m, &G.logFilePath, &opt_l \
USE_FEATURE_ROTATE_LOGFILE(,&opt_s) \ USE_FEATURE_ROTATE_LOGFILE(,&opt_s) \
USE_FEATURE_ROTATE_LOGFILE(,&opt_b) \ USE_FEATURE_ROTATE_LOGFILE(,&opt_b) \
USE_FEATURE_REMOTE_LOG( ,&opt_R) \ USE_FEATURE_REMOTE_LOG( ,&opt_R) \
@ -119,68 +179,51 @@ enum {
/* circular buffer variables/structures */ /* circular buffer variables/structures */
#if ENABLE_FEATURE_IPC_SYSLOG #if ENABLE_FEATURE_IPC_SYSLOG
#if CONFIG_FEATURE_IPC_SYSLOG_BUFFER_SIZE < 4 #if CONFIG_FEATURE_IPC_SYSLOG_BUFFER_SIZE < 4
#error Sorry, you must set the syslogd buffer size to at least 4KB. #error Sorry, you must set the syslogd buffer size to at least 4KB.
#error Please check CONFIG_FEATURE_IPC_SYSLOG_BUFFER_SIZE #error Please check CONFIG_FEATURE_IPC_SYSLOG_BUFFER_SIZE
#endif #endif
#include <sys/ipc.h>
#include <sys/sem.h>
#include <sys/shm.h>
/* our shared key */ /* our shared key */
#define KEY_ID ((long)0x414e4547) /* "GENA" */ #define KEY_ID ((long)0x414e4547) /* "GENA" */
// Semaphore operation structures
static struct shbuf_ds {
int32_t size; // size of data written
int32_t head; // start of message list
int32_t tail; // end of message list
char data[1]; // data/messages
} *shbuf; // shared memory pointer
static int shmid = -1; // ipc shared memory id
static int s_semid = -1; // ipc semaphore id
static int shm_size = ((CONFIG_FEATURE_IPC_SYSLOG_BUFFER_SIZE)*1024); // default shm size
static void ipcsyslog_cleanup(void) static void ipcsyslog_cleanup(void)
{ {
if (shmid != -1) { if (G.shmid != -1) {
shmdt(shbuf); shmdt(G.shbuf);
} }
if (shmid != -1) { if (G.shmid != -1) {
shmctl(shmid, IPC_RMID, NULL); shmctl(G.shmid, IPC_RMID, NULL);
} }
if (s_semid != -1) { if (G.s_semid != -1) {
semctl(s_semid, 0, IPC_RMID, 0); semctl(G.s_semid, 0, IPC_RMID, 0);
} }
} }
static void ipcsyslog_init(void) static void ipcsyslog_init(void)
{ {
if (DEBUG) if (DEBUG)
printf("shmget(%lx, %d,...)\n", KEY_ID, shm_size); printf("shmget(%lx, %d,...)\n", KEY_ID, G.shm_size);
shmid = shmget(KEY_ID, shm_size, IPC_CREAT | 1023); G.shmid = shmget(KEY_ID, G.shm_size, IPC_CREAT | 1023);
if (shmid == -1) { if (G.shmid == -1) {
bb_perror_msg_and_die("shmget"); bb_perror_msg_and_die("shmget");
} }
shbuf = shmat(shmid, NULL, 0); G.shbuf = shmat(G.shmid, NULL, 0);
if (!shbuf) { if (!G.shbuf) {
bb_perror_msg_and_die("shmat"); bb_perror_msg_and_die("shmat");
} }
shbuf->size = shm_size - offsetof(struct shbuf_ds, data); G.shbuf->size = G.shm_size - offsetof(struct shbuf_ds, data);
shbuf->head = shbuf->tail = 0; G.shbuf->head = G.shbuf->tail = 0;
// we'll trust the OS to set initial semval to 0 (let's hope) // we'll trust the OS to set initial semval to 0 (let's hope)
s_semid = semget(KEY_ID, 2, IPC_CREAT | IPC_EXCL | 1023); G.s_semid = semget(KEY_ID, 2, IPC_CREAT | IPC_EXCL | 1023);
if (s_semid == -1) { if (G.s_semid == -1) {
if (errno == EEXIST) { if (errno == EEXIST) {
s_semid = semget(KEY_ID, 2, 0); G.s_semid = semget(KEY_ID, 2, 0);
if (s_semid != -1) if (G.s_semid != -1)
return; return;
} }
bb_perror_msg_and_die("semget"); bb_perror_msg_and_die("semget");
@ -190,14 +233,10 @@ static void ipcsyslog_init(void)
/* Write message to shared mem buffer */ /* Write message to shared mem buffer */
static void log_to_shmem(const char *msg, int len) static void log_to_shmem(const char *msg, int len)
{ {
/* Why libc insists on these being rw? */
static struct sembuf SMwup[1] = { {1, -1, IPC_NOWAIT} };
static struct sembuf SMwdn[3] = { {0, 0}, {1, 0}, {1, +1} };
int old_tail, new_tail; int old_tail, new_tail;
char *c; char *c;
if (semop(s_semid, SMwdn, 3) == -1) { if (semop(G.s_semid, G.SMwdn, 3) == -1) {
bb_perror_msg_and_die("SMwdn"); bb_perror_msg_and_die("SMwdn");
} }
@ -212,53 +251,53 @@ static void log_to_shmem(const char *msg, int len)
*/ */
len++; /* length with NUL included */ len++; /* length with NUL included */
again: again:
old_tail = shbuf->tail; old_tail = G.shbuf->tail;
new_tail = old_tail + len; new_tail = old_tail + len;
if (new_tail < shbuf->size) { if (new_tail < G.shbuf->size) {
/* No need to move head if shbuf->head <= old_tail, /* No need to move head if shbuf->head <= old_tail,
* else... */ * else... */
if (old_tail < shbuf->head && shbuf->head <= new_tail) { if (old_tail < G.shbuf->head && G.shbuf->head <= new_tail) {
/* ...need to move head forward */ /* ...need to move head forward */
c = memchr(shbuf->data + new_tail, '\0', c = memchr(G.shbuf->data + new_tail, '\0',
shbuf->size - new_tail); G.shbuf->size - new_tail);
if (!c) /* no NUL ahead of us, wrap around */ if (!c) /* no NUL ahead of us, wrap around */
c = memchr(shbuf->data, '\0', old_tail); c = memchr(G.shbuf->data, '\0', old_tail);
if (!c) { /* still nothing? point to this msg... */ if (!c) { /* still nothing? point to this msg... */
shbuf->head = old_tail; G.shbuf->head = old_tail;
} else { } else {
/* convert pointer to offset + skip NUL */ /* convert pointer to offset + skip NUL */
shbuf->head = c - shbuf->data + 1; G.shbuf->head = c - G.shbuf->data + 1;
} }
} }
/* store message, set new tail */ /* store message, set new tail */
memcpy(shbuf->data + old_tail, msg, len); memcpy(G.shbuf->data + old_tail, msg, len);
shbuf->tail = new_tail; G.shbuf->tail = new_tail;
} else { } else {
/* we need to break up the message and wrap it around */ /* we need to break up the message and wrap it around */
/* k == available buffer space ahead of old tail */ /* k == available buffer space ahead of old tail */
int k = shbuf->size - old_tail - 1; int k = G.shbuf->size - old_tail - 1;
if (shbuf->head > old_tail) { if (G.shbuf->head > old_tail) {
/* we are going to overwrite head, need to /* we are going to overwrite head, need to
* move it out of the way */ * move it out of the way */
c = memchr(shbuf->data, '\0', old_tail); c = memchr(G.shbuf->data, '\0', old_tail);
if (!c) { /* nothing? point to this msg... */ if (!c) { /* nothing? point to this msg... */
shbuf->head = old_tail; G.shbuf->head = old_tail;
} else { /* convert pointer to offset + skip NUL */ } else { /* convert pointer to offset + skip NUL */
shbuf->head = c - shbuf->data + 1; G.shbuf->head = c - G.shbuf->data + 1;
} }
} }
/* copy what fits to the end of buffer, and repeat */ /* copy what fits to the end of buffer, and repeat */
memcpy(shbuf->data + old_tail, msg, k); memcpy(G.shbuf->data + old_tail, msg, k);
msg += k; msg += k;
len -= k; len -= k;
shbuf->tail = 0; G.shbuf->tail = 0;
goto again; goto again;
} }
if (semop(s_semid, SMwup, 1) == -1) { if (semop(G.s_semid, G.SMwup, 1) == -1) {
bb_perror_msg_and_die("SMwup"); bb_perror_msg_and_die("SMwup");
} }
if (DEBUG) if (DEBUG)
printf("head:%d tail:%d\n", shbuf->head, shbuf->tail); printf("head:%d tail:%d\n", G.shbuf->head, G.shbuf->tail);
} }
#else #else
void ipcsyslog_cleanup(void); void ipcsyslog_cleanup(void);
@ -270,29 +309,28 @@ void log_to_shmem(const char *msg);
/* Print a message to the log file. */ /* Print a message to the log file. */
static void log_locally(char *msg) static void log_locally(char *msg)
{ {
static time_t last;
struct flock fl; struct flock fl;
int len = strlen(msg); int len = strlen(msg);
#if ENABLE_FEATURE_IPC_SYSLOG #if ENABLE_FEATURE_IPC_SYSLOG
if ((option_mask32 & OPT_circularlog) && shbuf) { if ((option_mask32 & OPT_circularlog) && G.shbuf) {
log_to_shmem(msg, len); log_to_shmem(msg, len);
return; return;
} }
#endif #endif
if (logFD >= 0) { if (G.logFD >= 0) {
time_t cur; time_t cur;
time(&cur); time(&cur);
if (last != cur) { if (G.last_log_time != cur) {
last = cur; /* reopen log file every second */ G.last_log_time = cur; /* reopen log file every second */
close(logFD); close(G.logFD);
goto reopen; goto reopen;
} }
} else { } else {
reopen: reopen:
logFD = device_open(logFilePath, O_WRONLY | O_CREAT G.logFD = device_open(G.logFilePath, O_WRONLY | O_CREAT
| O_NOCTTY | O_APPEND | O_NONBLOCK); | O_NOCTTY | O_APPEND | O_NONBLOCK);
if (logFD < 0) { if (G.logFD < 0) {
/* cannot open logfile? - print to /dev/console then */ /* cannot open logfile? - print to /dev/console then */
int fd = device_open(_PATH_CONSOLE, O_WRONLY | O_NOCTTY | O_NONBLOCK); int fd = device_open(_PATH_CONSOLE, O_WRONLY | O_NOCTTY | O_NONBLOCK);
if (fd < 0) if (fd < 0)
@ -306,9 +344,9 @@ static void log_locally(char *msg)
{ {
struct stat statf; struct stat statf;
isRegular = (fstat(logFD, &statf) == 0 && (statf.st_mode & S_IFREG)); G.isRegular = (fstat(G.logFD, &statf) == 0 && (statf.st_mode & S_IFREG));
/* bug (mostly harmless): can wrap around if file > 4gb */ /* bug (mostly harmless): can wrap around if file > 4gb */
curFileSize = statf.st_size; G.curFileSize = statf.st_size;
} }
#endif #endif
} }
@ -317,36 +355,36 @@ static void log_locally(char *msg)
fl.l_start = 0; fl.l_start = 0;
fl.l_len = 1; fl.l_len = 1;
fl.l_type = F_WRLCK; fl.l_type = F_WRLCK;
fcntl(logFD, F_SETLKW, &fl); fcntl(G.logFD, F_SETLKW, &fl);
#if ENABLE_FEATURE_ROTATE_LOGFILE #if ENABLE_FEATURE_ROTATE_LOGFILE
if (logFileSize && isRegular && curFileSize > logFileSize) { if (G.logFileSize && G.isRegular && G.curFileSize > G.logFileSize) {
if (logFileRotate) { /* always 0..99 */ if (G.logFileRotate) { /* always 0..99 */
int i = strlen(logFilePath) + 3 + 1; int i = strlen(G.logFilePath) + 3 + 1;
char oldFile[i]; char oldFile[i];
char newFile[i]; char newFile[i];
i = logFileRotate - 1; i = G.logFileRotate - 1;
/* rename: f.8 -> f.9; f.7 -> f.8; ... */ /* rename: f.8 -> f.9; f.7 -> f.8; ... */
while (1) { while (1) {
sprintf(newFile, "%s.%d", logFilePath, i); sprintf(newFile, "%s.%d", G.logFilePath, i);
if (i == 0) break; if (i == 0) break;
sprintf(oldFile, "%s.%d", logFilePath, --i); sprintf(oldFile, "%s.%d", G.logFilePath, --i);
rename(oldFile, newFile); rename(oldFile, newFile);
} }
/* newFile == "f.0" now */ /* newFile == "f.0" now */
rename(logFilePath, newFile); rename(G.logFilePath, newFile);
fl.l_type = F_UNLCK; fl.l_type = F_UNLCK;
fcntl(logFD, F_SETLKW, &fl); fcntl(G.logFD, F_SETLKW, &fl);
close(logFD); close(G.logFD);
goto reopen; goto reopen;
} }
ftruncate(logFD, 0); ftruncate(G.logFD, 0);
} }
curFileSize += G.curFileSize +=
#endif #endif
full_write(logFD, msg, len); full_write(G.logFD, msg, len);
fl.l_type = F_UNLCK; fl.l_type = F_UNLCK;
fcntl(logFD, F_SETLKW, &fl); fcntl(G.logFD, F_SETLKW, &fl);
} }
static void parse_fac_prio_20(int pri, char *res20) static void parse_fac_prio_20(int pri, char *res20)
@ -397,13 +435,13 @@ static void timestamp_and_log(int pri, char *msg, int len)
/* Log message locally (to file or shared mem) */ /* Log message locally (to file or shared mem) */
if (!ENABLE_FEATURE_REMOTE_LOG || (option_mask32 & OPT_locallog)) { if (!ENABLE_FEATURE_REMOTE_LOG || (option_mask32 & OPT_locallog)) {
if (LOG_PRI(pri) < logLevel) { if (LOG_PRI(pri) < G.logLevel) {
if (option_mask32 & OPT_small) if (option_mask32 & OPT_small)
sprintf(PRINTBUF, "%s %s\n", timestamp, msg); sprintf(PRINTBUF, "%s %s\n", timestamp, msg);
else { else {
char res[20]; char res[20];
parse_fac_prio_20(pri, res); parse_fac_prio_20(pri, res);
sprintf(PRINTBUF, "%s %s %s %s\n", timestamp, localHostName, res, msg); sprintf(PRINTBUF, "%s %s %s %s\n", timestamp, G.localHostName, res, msg);
} }
log_locally(PRINTBUF); log_locally(PRINTBUF);
} }
@ -456,9 +494,9 @@ static void quit_signal(int sig)
#ifdef SYSLOGD_MARK #ifdef SYSLOGD_MARK
static void do_mark(int sig) static void do_mark(int sig)
{ {
if (markInterval) { if (G.markInterval) {
timestamp_and_log(LOG_SYSLOG | LOG_INFO, (char*)"-- MARK --", 0); timestamp_and_log(LOG_SYSLOG | LOG_INFO, (char*)"-- MARK --", 0);
alarm(markInterval); alarm(G.markInterval);
} }
} }
#endif #endif
@ -482,7 +520,7 @@ static void do_syslogd(void)
#endif #endif
#ifdef SYSLOGD_MARK #ifdef SYSLOGD_MARK
signal(SIGALRM, do_mark); signal(SIGALRM, do_mark);
alarm(markInterval); alarm(G.markInterval);
#endif #endif
memset(&sunx, 0, sizeof(sunx)); memset(&sunx, 0, sizeof(sunx));
@ -541,14 +579,14 @@ static void do_syslogd(void)
#if ENABLE_FEATURE_REMOTE_LOG #if ENABLE_FEATURE_REMOTE_LOG
/* We are not modifying log messages in any way before send */ /* We are not modifying log messages in any way before send */
/* Remote site cannot trust _us_ anyway and need to do validation again */ /* Remote site cannot trust _us_ anyway and need to do validation again */
if (remoteAddr) { if (G.remoteAddr) {
if (-1 == remoteFD) { if (-1 == G.remoteFD) {
remoteFD = socket(remoteAddr->sa.sa_family, SOCK_DGRAM, 0); G.remoteFD = socket(G.remoteAddr->sa.sa_family, SOCK_DGRAM, 0);
} }
if (-1 != remoteFD) { if (-1 != G.remoteFD) {
/* send message to remote logger, ignore possible error */ /* send message to remote logger, ignore possible error */
sendto(remoteFD, RECVBUF, i, MSG_DONTWAIT, sendto(G.remoteFD, RECVBUF, i, MSG_DONTWAIT,
&remoteAddr->sa, remoteAddr->len); &G.remoteAddr->sa, G.remoteAddr->len);
} }
} }
#endif #endif
@ -564,33 +602,36 @@ int syslogd_main(int argc, char **argv)
char OPTION_DECL; char OPTION_DECL;
char *p; char *p;
PTR_TO_GLOBALS = xzalloc(sizeof(G));
memcpy(ptr_to_globals, &init_globals, sizeof(init_globals));
/* do normal option parsing */ /* do normal option parsing */
opt_complementary = "=0"; /* no non-option params */ opt_complementary = "=0"; /* no non-option params */
getopt32(argc, argv, OPTION_STR, OPTION_PARAM); getopt32(argc, argv, OPTION_STR, OPTION_PARAM);
#ifdef SYSLOGD_MARK #ifdef SYSLOGD_MARK
if (option_mask32 & OPT_mark) // -m if (option_mask32 & OPT_mark) // -m
markInterval = xatou_range(opt_m, 0, INT_MAX/60) * 60; G.markInterval = xatou_range(opt_m, 0, INT_MAX/60) * 60;
#endif #endif
//if (option_mask32 & OPT_nofork) // -n //if (option_mask32 & OPT_nofork) // -n
//if (option_mask32 & OPT_outfile) // -O //if (option_mask32 & OPT_outfile) // -O
if (option_mask32 & OPT_loglevel) // -l if (option_mask32 & OPT_loglevel) // -l
logLevel = xatou_range(opt_l, 1, 8); G.logLevel = xatou_range(opt_l, 1, 8);
//if (option_mask32 & OPT_small) // -S //if (option_mask32 & OPT_small) // -S
#if ENABLE_FEATURE_ROTATE_LOGFILE #if ENABLE_FEATURE_ROTATE_LOGFILE
if (option_mask32 & OPT_filesize) // -s if (option_mask32 & OPT_filesize) // -s
logFileSize = xatou_range(opt_s, 0, INT_MAX/1024) * 1024; G.logFileSize = xatou_range(opt_s, 0, INT_MAX/1024) * 1024;
if (option_mask32 & OPT_rotatecnt) // -b if (option_mask32 & OPT_rotatecnt) // -b
logFileRotate = xatou_range(opt_b, 0, 99); G.logFileRotate = xatou_range(opt_b, 0, 99);
#endif #endif
#if ENABLE_FEATURE_REMOTE_LOG #if ENABLE_FEATURE_REMOTE_LOG
if (option_mask32 & OPT_remotelog) { // -R if (option_mask32 & OPT_remotelog) { // -R
remoteAddr = xhost2sockaddr(opt_R, 514); G.remoteAddr = xhost2sockaddr(opt_R, 514);
} }
//if (option_mask32 & OPT_locallog) // -L //if (option_mask32 & OPT_locallog) // -L
#endif #endif
#if ENABLE_FEATURE_IPC_SYSLOG #if ENABLE_FEATURE_IPC_SYSLOG
if (opt_C) // -Cn if (opt_C) // -Cn
shm_size = xatoul_range(opt_C, 4, INT_MAX/1024) * 1024; G.shm_size = xatoul_range(opt_C, 4, INT_MAX/1024) * 1024;
#endif #endif
/* If they have not specified remote logging, then log locally */ /* If they have not specified remote logging, then log locally */
@ -598,8 +639,8 @@ int syslogd_main(int argc, char **argv)
option_mask32 |= OPT_locallog; option_mask32 |= OPT_locallog;
/* Store away localhost's name before the fork */ /* Store away localhost's name before the fork */
gethostname(localHostName, sizeof(localHostName)); gethostname(G.localHostName, sizeof(G.localHostName));
p = strchr(localHostName, '.'); p = strchr(G.localHostName, '.');
if (p) { if (p) {
*p = '\0'; *p = '\0';
} }