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windows: fix _lws_plat_file_seek_cur to update pos in fd

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* needed to make fops_zip to work in windows
This commit is contained in:
=?UTF-8?q?M=C3=A4rt=20Laak?= 2021-09-22 12:03:28 +03:00 • committed by Andy Green
parent 457ec95d0c
commit 1873ff6168
1 changed files with 17 additions and 1 deletions
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18
lib/plat/windows/windows-file.c
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@ -92,7 +92,23 @@ _lws_plat_file_seek_cur(lws_fop_fd_t fop_fd, lws_fileofs_t offset)
LARGE_INTEGER l;
l.QuadPart = offset;
return SetFilePointerEx((HANDLE)fop_fd->fd, l, NULL, FILE_CURRENT);
if (!SetFilePointerEx((HANDLE)fop_fd->fd, l, NULL, FILE_CURRENT))
{
lwsl_err("error seeking from cur %ld, offset %ld\n", (long)fop_fd->pos, (long)offset);
return -1;
}
LARGE_INTEGER zero;
zero.QuadPart = 0;
LARGE_INTEGER newPos;
if (!SetFilePointerEx((HANDLE)fop_fd->fd, zero, &newPos, FILE_CURRENT))
{
lwsl_err("error seeking from cur %ld, offset %ld\n", (long)fop_fd->pos, (long)offset);
return -1;
}
fop_fd->pos = newPos.QuadPart;
return newPos.QuadPart;
}
int