1 #include "stdio_impl.h"
4 int __fseeko_unlocked(FILE *f, off_t off, int whence)
6 /* Adjust relative offset for unread data in buffer, if any. */
7 if (whence == SEEK_CUR) off -= f->rend - f->rpos;
9 /* Flush write buffer, and report error on failure. */
10 if (f->wpos > f->wbase) {
12 if (!f->wpos) return -1;
15 /* Leave writing mode */
16 f->wpos = f->wbase = f->wend = 0;
18 /* Perform the underlying seek. */
19 if (f->seek(f, off, whence) < 0) return -1;
21 /* If seek succeeded, file is seekable and we discard read buffer. */
22 f->rpos = f->rend = 0;
28 int __fseeko(FILE *f, off_t off, int whence)
32 result = __fseeko_unlocked(f, off, whence);
37 int fseek(FILE *f, long off, int whence)
39 return __fseeko(f, off, whence);
42 weak_alias(__fseeko, fseeko);