1 #include "stdio_impl.h"
3 int __fseeko_unlocked(FILE *f, off_t off, int whence)
5 /* Adjust relative offset for unread data in buffer, if any. */
6 if (whence == SEEK_CUR) off -= f->rend - f->rpos;
8 /* Flush write buffer, and report error on failure. */
9 if (f->wpos > f->wbase) {
11 if (!f->wpos) return -1;
14 /* Leave writing mode */
15 f->wpos = f->wbase = f->wend = 0;
17 /* Perform the underlying seek. */
18 if (f->seek(f, off, whence) < 0) {
23 /* If seek succeeded, file is seekable and we discard read buffer. */
24 f->rpos = f->rend = 0;
30 int __fseeko(FILE *f, off_t off, int whence)
34 result = __fseeko_unlocked(f, off, whence);
39 int fseek(FILE *f, long off, int whence)
41 return __fseeko(f, off, whence);
44 weak_alias(__fseeko, fseeko);