+ if (filename) {
+ /* Purge the log file if the max size is defined. */
+ if (maxsize) {
+ fp = fopen(filename, "r");
+ if (fp) {
+ int filelen;
+
+ filelen = fseek(fp, (off_t)0L, SEEK_END);
+ fseek(fp, (off_t)0L, SEEK_SET);
+
+ /* Purge? */
+ if (filelen >= maxsize)
+ unlink(filename);
+
+ fclose(fp);
+ }
+ }
+
+ /* Open the log file */
+ if ((fp = fopen(filename, "a+")) == NULL) {
+ fprintf(stderr, "warning: could not open log file "
+ "%s: %s\n", filename, strerror(errno));
+ fprintf(stderr, "warning: log messages will be displayed on "
+ "the screen\n");
+ fp = stderr;