diff options
| -rw-r--r-- | src/core/file_sys/vfs_concat.cpp | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/src/core/file_sys/vfs_concat.cpp b/src/core/file_sys/vfs_concat.cpp index 853b893a1..311a59e5f 100644 --- a/src/core/file_sys/vfs_concat.cpp +++ b/src/core/file_sys/vfs_concat.cpp @@ -150,23 +150,29 @@ std::size_t ConcatenatedVfsFile::Read(u8* data, std::size_t length, std::size_t while (cur_length > 0 && it != concatenation_map.end()) { // Check if we can read the file at this position. const auto& file = it->file; - const u64 file_offset = it->offset; + const u64 map_offset = it->offset; const u64 file_size = file->GetSize(); - if (cur_offset >= file_offset + file_size) { + if (cur_offset > map_offset + file_size) { // Entirely out of bounds read. break; } // Read the file at this position. - const u64 intended_read_size = std::min<u64>(cur_length, file_size); + const u64 file_seek = cur_offset - map_offset; + const u64 intended_read_size = std::min<u64>(cur_length, file_size - file_seek); const u64 actual_read_size = - file->Read(data + (cur_offset - offset), intended_read_size, cur_offset - file_offset); + file->Read(data + (cur_offset - offset), intended_read_size, file_seek); // Update tracking. cur_offset += actual_read_size; cur_length -= actual_read_size; it++; + + // If we encountered a short read, we're done. + if (actual_read_size < intended_read_size) { + break; + } } return cur_offset - offset; |