40 int FlushAndSync(FILE *fp);
44     FILE *fp = fopen(filename, "r");  in FileSize()  local
45     if (!fp) {  in FileSize()
50     int ret = fseek(fp, 0L, SEEK_END);  in FileSize()
52         size = ftell(fp);  in FileSize()
54     fclose(fp);  in FileSize()
59 static FILE *FileClear(FILE **fp, const char *filename)  in FileClear()  argument
61     if (*fp != NULL) {  in FileClear()
62         fclose(*fp);  in FileClear()
64     *fp = fopen(filename, "w");  in FileClear()
65     if (*fp == NULL) {  in FileClear()
69     return *fp;  in FileClear()
104 int FlushAndSync(FILE *fp)  in FlushAndSync()  argument
106     if (fp == NULL) {  in FlushAndSync()
109     if (fflush(fp) != 0) {  in FlushAndSync()
112     int fd = fileno(fp);  in FlushAndSync()