/* Open a new log file: determine the start of the current
* period, generate the log file name from the fileTemplate,
* determine the end of the period and open the new log file.
*
* Returns the file descriptor of the new log file and also sets the
* name of the file and the start time of the next period via pointers
* supplied.
*/
static FILE *new_log_file(const char *fileTemplate, const char *linkname,
mode_t linktype, const char *prevlinkname,
PERIODICITY periodicity, int period_multiple,
int period_delay, char *pfilename,
size_t pfilename_len, time_t time_now,
time_t *pnext_period) {
time_t start_of_period;
struct tm *tm;
int log_fd;
start_of_period = start_of_this_period(time_now, periodicity,
period_multiple);
tm = localtime(&start_of_period);
strftime(pfilename, pfilename_len, fileTemplate, tm);
*pnext_period = start_of_next_period(start_of_period, periodicity,
period_multiple) + period_delay;
CRONO_DEBUG(("%s (%d): using log file \"%s\" from %s (%d) until %s (%d) "
"(for %d secs)\n",
timestamp(time_now), time_now, pfilename,
timestamp(start_of_period), start_of_period,
timestamp(*pnext_period), *pnext_period,
*pnext_period - time_now));
log_fd = open(pfilename, O_WRONLY|O_CREAT|O_APPEND, FILE_MODE);
#ifndef DONT_CREATE_SUBDIRS
if ((log_fd < 0) && (errno == ENOENT)) {
create_subdirs(pfilename);
log_fd = open(pfilename, O_WRONLY|O_CREAT|O_APPEND, FILE_MODE);
}
#endif
if (log_fd < 0) {
perror(pfilename);
return NULL;
}
if (linkname) {
/* Create a relative symlink to logs under linkname's directory */
std::string dir = Util::safe_dirname(linkname);
if (dir != "/") {
dir.append("/");
}
std::string filename;
if (!strncmp(pfilename, dir.c_str(), dir.length())) {
filename = pfilename + dir.length();
} else {
filename = pfilename;
}
create_link(filename.c_str(), linkname, linktype, prevlinkname);
}
return fdopen(log_fd, "a");
}
/* Open a new log file: determine the start of the current
* period, generate the log file name from the fileTemplate,
* determine the end of the period and open the new log file.
*
* Returns the file descriptor of the new log file and also sets the
* name of the file and the start time of the next period via pointers
* supplied.
*/
static FILE *new_log_file(const char *fileTemplate, const char *linkname,
mode_t linktype, const char *prevlinkname,
PERIODICITY periodicity, int period_multiple,
int period_delay, char *pfilename,
size_t pfilename_len, time_t time_now,
time_t *pnext_period) {
time_t start_of_period;
struct tm *tm;
int log_fd;
start_of_period = start_of_this_period(time_now, periodicity,
period_multiple);
tm = localtime(&start_of_period);
strftime(pfilename, pfilename_len, fileTemplate, tm);
*pnext_period = start_of_next_period(start_of_period, periodicity,
period_multiple) + period_delay;
DEBUG(("%s (%d): using log file \"%s\" from %s (%d) until %s (%d) "
"(for %d secs)\n",
timestamp(time_now), time_now, pfilename,
timestamp(start_of_period), start_of_period,
timestamp(*pnext_period), *pnext_period,
*pnext_period - time_now));
log_fd = open(pfilename, O_WRONLY|O_CREAT|O_APPEND, FILE_MODE);
#ifndef DONT_CREATE_SUBDIRS
if ((log_fd == 0) && (errno == ENOENT)) {
create_subdirs(pfilename);
log_fd = open(pfilename, O_WRONLY|O_CREAT|O_APPEND, FILE_MODE);
}
#endif
if (log_fd < 0) {
perror(pfilename);
return NULL;
}
if (linkname) {
create_link(pfilename, linkname, linktype, prevlinkname);
}
return fdopen(log_fd, "a");
}