3 * Copyright 2012, 2013 MinGW.org project
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
29 fseeko64 (FILE* stream, off64_t offset, int whence)
32 if (whence == SEEK_CUR)
34 /* If stream is invalid, fgetpos sets errno. */
35 if (fgetpos (stream, &pos))
37 pos += (fpos_t) offset;
39 else if (whence == SEEK_END)
41 /* If writing, we need to flush before getting file length. */
43 pos = (fpos_t) (_filelengthi64 (_fileno (stream)) + offset);
45 else if (whence == SEEK_SET)
46 pos = (fpos_t) offset;
52 return fsetpos (stream, &pos);