static void message(char *fmt, ...)
{
int fd;
struct flock fl;
va_list arguments;
fl.l_whence = SEEK_SET;
fl.l_start = 0;
fl.l_len = 1;
#ifdef CONFIG_FEATURE_IPC_SYSLOG
if ((circular_logging == TRUE) && (buf != NULL)) {
char b[1024];
va_start(arguments, fmt);
vsnprintf(b, sizeof(b) - 1, fmt, arguments);
va_end(arguments);
circ_message(b);
} else
#endif
if ((fd =
device_open(logFilePath,
O_WRONLY | O_CREAT | O_NOCTTY | O_APPEND |
O_NONBLOCK)) >= 0) {
fl.l_type = F_WRLCK;
fcntl(fd, F_SETLKW, &fl);
#ifdef CONFIG_FEATURE_ROTATE_LOGFILE
if ( logFileSize > 0 ) {
struct stat statf;
int r = fstat(fd, &statf);
if( !r && (statf.st_mode & S_IFREG)
&& (lseek(fd,0,SEEK_END) > logFileSize) ) {
if(logFileRotate > 0) {
int i;
char oldFile[(strlen(logFilePath)+3)], newFile[(strlen(logFilePath)+3)];
for(i=logFileRotate-1;i>0;i--) {
sprintf(oldFile, "%s.%d", logFilePath, i-1);
sprintf(newFile, "%s.%d", logFilePath, i);
rename(oldFile, newFile);
}
sprintf(newFile, "%s.%d", logFilePath, 0);
fl.l_type = F_UNLCK;
fcntl (fd, F_SETLKW, &fl);
close(fd);
rename(logFilePath, newFile);
fd = device_open (logFilePath,
O_WRONLY | O_CREAT | O_NOCTTY | O_APPEND |
O_NONBLOCK);
fl.l_type = F_WRLCK;
fcntl (fd, F_SETLKW, &fl);
} else {
ftruncate( fd, 0 );
}
}
}
#endif
va_start(arguments, fmt);
vdprintf(fd, fmt, arguments);
va_end(arguments);
fl.l_type = F_UNLCK;
fcntl(fd, F_SETLKW, &fl);
close(fd);
} else {
/* Always send console messages to /dev/console so people will see them. */
if ((fd =
device_open(_PATH_CONSOLE,
O_WRONLY | O_NOCTTY | O_NONBLOCK)) >= 0) {
va_start(arguments, fmt);
vdprintf(fd, fmt, arguments);
va_end(arguments);
close(fd);
} else {
fprintf(stderr, "Bummer, can't print: ");
va_start(arguments, fmt);
vfprintf(stderr, fmt, arguments);
fflush(stderr);
va_end(arguments);
}
}
}
void log_local_message(syslogd_local_config_t *local, const char *msg)
{
int fd;
struct flock fl;
debug_printf("log_local_message: local=%p, msg=%s", local, msg);
fl.l_whence = SEEK_SET;
fl.l_start = 0;
fl.l_len = 1;
#ifdef CONFIG_FEATURE_IPC_SYSLOG
if (local->circular_logging && (buf != NULL)) {
circ_message(msg);
} else
#endif
debug_printf("logfile=%s", local->logfile);
if ((fd =
device_open(local->logfile,
O_WRONLY | O_CREAT | O_NOCTTY | O_APPEND |
O_NONBLOCK)) >= 0) {
fl.l_type = F_WRLCK;
fcntl(fd, F_SETLKW, &fl);
#ifdef CONFIG_FEATURE_ROTATE_LOGFILE
if ( local->maxsize > 0 ) {
struct stat statf;
int r = fstat(fd, &statf);
if( !r && (statf.st_mode & S_IFREG)
&& (lseek(fd,0,SEEK_END) > local->maxsize * 1024) ) {
if(local->numfiles > 0) {
int i;
char oldFile[(strlen(local->logfile)+3)], newFile[(strlen(local->logfile)+3)];
debug_printf("rotating");
for(i=local->numfiles-1;i>0;i--) {
sprintf(oldFile, "%s.%d", local->logfile, i-1);
sprintf(newFile, "%s.%d", local->logfile, i);
rename(oldFile, newFile);
}
sprintf(newFile, "%s.%d", local->logfile, 0);
fl.l_type = F_UNLCK;
fcntl (fd, F_SETLKW, &fl);
close(fd);
rename(local->logfile, newFile);
fd = device_open (local->logfile,
O_WRONLY | O_CREAT | O_NOCTTY | O_APPEND |
O_NONBLOCK);
fl.l_type = F_WRLCK;
fcntl (fd, F_SETLKW, &fl);
} else {
ftruncate( fd, 0 );
}
}
}
#endif
debug_printf("writing");
write(fd, msg, strlen(msg));
fl.l_type = F_UNLCK;
fcntl(fd, F_SETLKW, &fl);
close(fd);
} else {
/* Always send console messages to /dev/console so people will see them. */
debug_printf("sending to console");
if ((fd =
device_open(_PATH_CONSOLE,
O_WRONLY | O_NOCTTY | O_NONBLOCK)) >= 0) {
debug_printf("writing to console");
write(fd, msg, strlen(msg));
close(fd);
} else {
debug_printf("writing to stderr");
fprintf(stderr, "Bummer, can't print: %s", msg);
fflush(stderr);
}
}
}
