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fsp_srv: Use std::string_view's copy() function instead of strncpy()

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Given elements inserted into a vector are zeroed out, we can just copy
MAX_LEN - 1 elements and the data will already be properly null
terminated.
This commit is contained in:
Lioncash 2018-08-08 17:49:57 -04:00
parent 4afb05d0cc
commit 7353cfc781
2 changed files with 10 additions and 8 deletions
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12
src/core/file_sys/directory.h
View File

@ -4,8 +4,9 @@
#pragma once #pragma once
#include <array>
#include <cstddef> #include <cstddef>
#include <iterator>
#include <string_view>
#include "common/common_funcs.h" #include "common/common_funcs.h"
#include "common/common_types.h" #include "common/common_types.h"
@ -21,9 +22,14 @@ enum EntryType : u8 {
// Structure of a directory entry, from // Structure of a directory entry, from
// http://switchbrew.org/index.php?title=Filesystem_services#DirectoryEntry // http://switchbrew.org/index.php?title=Filesystem_services#DirectoryEntry
const size_t FILENAME_LENGTH = 0x300;
struct Entry { struct Entry {
char filename[FILENAME_LENGTH]; Entry(std::string_view view, EntryType entry_type, u64 entry_size)
: type{entry_type}, file_size{entry_size} {
const size_t copy_size = view.copy(filename, std::size(filename) - 1);
filename[copy_size] = '\0';
}
char filename[0x300];
INSERT_PADDING_BYTES(4); INSERT_PADDING_BYTES(4);
EntryType type; EntryType type;
INSERT_PADDING_BYTES(3); INSERT_PADDING_BYTES(3);

6
src/core/hle/service/filesystem/fsp_srv.cpp
View File

@ -196,11 +196,7 @@ static void BuildEntryIndex(std::vector<FileSys::Entry>& entries, const std::vec
entries.reserve(entries.size() + new_data.size()); entries.reserve(entries.size() + new_data.size());
for (const auto& new_entry : new_data) { for (const auto& new_entry : new_data) {
auto& entry = entries.emplace_back(); entries.emplace_back(new_entry->GetName(), type, new_entry->GetSize());
entry.filename[0] = '\0';
std::strncat(entry.filename, new_entry->GetName().c_str(), FileSys::FILENAME_LENGTH - 1);
entry.type = type;
entry.file_size = new_entry->GetSize();
} }
} }