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Fix issue where files over 2.5gb approx would fail to load on uwp/xbox (#13150) 

* fix issue where files over 2.5 gb would fail to read

* fix issue where trying to get the file size on excessively large files would fail
This commit is contained in:
tunip3 2021-10-26 00:43:44 +01:00 committed by GitHub
parent f5d8d07cf1
commit d75127e9c2
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 17 additions and 3 deletions
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20
libretro-common/vfs/vfs_implementation_uwp.cpp
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@ -158,9 +158,16 @@ int64_t retro_vfs_file_truncate_impl(libretro_vfs_implementation_file* stream, i
int64_t retro_vfs_file_tell_impl(libretro_vfs_implementation_file* stream) int64_t retro_vfs_file_tell_impl(libretro_vfs_implementation_file* stream)
{ {
if (!stream) if (!stream || (!stream->fp && stream->fh == INVALID_HANDLE_VALUE))
return -1; return -1;
if (stream->fh != INVALID_HANDLE_VALUE)
{
LARGE_INTEGER sz;
if (GetFileSizeEx(stream->fh, &sz))
return sz.QuadPart;
return 0;
}
if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0) if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
{ {
return ftell(stream->fp); return ftell(stream->fp);
@ -213,8 +220,15 @@ int64_t retro_vfs_file_seek_impl(libretro_vfs_implementation_file* stream,
int64_t retro_vfs_file_read_impl(libretro_vfs_implementation_file* stream, int64_t retro_vfs_file_read_impl(libretro_vfs_implementation_file* stream,
void* s, uint64_t len) void* s, uint64_t len)
{ {
if (!stream || !s) if (!stream || (!stream->fp && stream->fh == INVALID_HANDLE_VALUE) || !s)
return -1; return -1;
if (stream->fh != INVALID_HANDLE_VALUE)
{
DWORD _bytes_read;
ReadFile(stream->fh, (char*)s, len, &_bytes_read, NULL);
return (int64_t)_bytes_read;
}
if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0) if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
{ {