mirror of
https://github.com/melonDS-emu/melonDS.git
synced 2025-07-26 15:50:00 -06:00
955 lines
25 KiB
C++
955 lines
25 KiB
C++
/*
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Copyright 2016-2021 Arisotura
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This file is part of melonDS.
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melonDS is free software: you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with melonDS. If not, see http://www.gnu.org/licenses/.
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*/
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#ifdef __WIN32__
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#include <windows.h>
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#else
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#include <sys/types.h>
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#endif // __WIN32__
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#include <dirent.h>
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#include <errno.h>
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#include <inttypes.h>
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#include "FATStorage.h"
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#include "Platform.h"
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namespace fs = std::filesystem;
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static int GetDirEntryType(const char* path, struct dirent* entry)
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{
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#ifdef __WIN32__
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DWORD res = GetFileAttributesA(path);
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if (res == INVALID_FILE_ATTRIBUTES) return -1;
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if (res & FILE_ATTRIBUTE_DIRECTORY) return 1;
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if (res & (FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_DEVICE | FILE_ATTRIBUTE_VIRTUAL)) return -1;
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return 0;
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#else
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if (entry->d_type == DT_DIR) return 1;
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if (entry->d_type == DT_REG) return 0;
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return -1;
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#endif // __WIN32__
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}
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FATStorage::FATStorage()
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{
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printf("FATStorage begin\n");
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bool res = Build("dldi", 0x20000000, "melonDLDI.bin");
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printf("FATStorage result: %d\n", res);
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}
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FATStorage::~FATStorage()
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{
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printf("SAVING DLDI SHIT\n");
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Save("dldi");
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}
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FILE* FATStorage::FF_File;
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u64 FATStorage::FF_FileSize;
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UINT FATStorage::FF_ReadStorage(BYTE* buf, LBA_t sector, UINT num)
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{
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if (!FF_File) return 0;
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u64 addr = sector * 0x200ULL;
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u32 len = num * 0x200;
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if ((addr+len) > FF_FileSize)
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{
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if (addr >= FF_FileSize) return 0;
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len = FF_FileSize - addr;
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num = len >> 9;
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}
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fseek(FF_File, addr, SEEK_SET);
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u32 res = fread(buf, 0x200, num, FF_File);
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if (res < num)
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{
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if (feof(FF_File))
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{
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memset(&buf[0x200*res], 0, 0x200*(num-res));
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return num;
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}
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}
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return res;
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}
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UINT FATStorage::FF_WriteStorage(BYTE* buf, LBA_t sector, UINT num)
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{
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if (!FF_File) return 0;
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u64 addr = sector * 0x200ULL;
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u32 len = num * 0x200;
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if ((addr+len) > FF_FileSize)
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{
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if (addr >= FF_FileSize) return 0;
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len = FF_FileSize - addr;
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num = len >> 9;
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}
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fseek(FF_File, addr, SEEK_SET);
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u32 res = fwrite(buf, 0x200, num, FF_File);
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return res;
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}
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void FATStorage::LoadIndex()
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{
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DirIndex.clear();
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FileIndex.clear();
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FILE* f = Platform::OpenLocalFile(IndexPath.c_str(), "r");
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if (!f) return;
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char linebuf[1536];
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while (!feof(f))
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{
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if (fgets(linebuf, 1536, f) == nullptr)
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break;
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if (linebuf[0] == 'D')
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{
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u32 readonly;
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char fpath[1536] = {0};
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int ret = sscanf(linebuf, "DIR %u %[^\t\r\n]",
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&readonly, fpath);
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if (ret < 2) continue;
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for (int i = 0; i < 1536 && fpath[i] != '\0'; i++)
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{
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if (fpath[i] == '\\')
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fpath[i] = '/';
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}
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DirIndexEntry entry;
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entry.Path = fpath;
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entry.IsReadOnly = readonly!=0;
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DirIndex[entry.Path] = entry;
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}
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else if (linebuf[0] == 'F')
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{
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u32 readonly;
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u64 fsize;
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s64 lastmodified;
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u32 lastmod_internal;
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char fpath[1536] = {0};
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int ret = sscanf(linebuf, "FILE %u %" PRIu64 " %" PRId64 " %u %[^\t\r\n]",
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&readonly, &fsize, &lastmodified, &lastmod_internal, fpath);
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if (ret < 5) continue;
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for (int i = 0; i < 1536 && fpath[i] != '\0'; i++)
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{
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if (fpath[i] == '\\')
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fpath[i] = '/';
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}
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FileIndexEntry entry;
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entry.Path = fpath;
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entry.IsReadOnly = readonly!=0;
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entry.Size = fsize;
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entry.LastModified = lastmodified;
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entry.LastModifiedInternal = lastmod_internal;
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FileIndex[entry.Path] = entry;
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}
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}
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fclose(f);
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// ensure the indexes are sane
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std::vector<std::string> removelist;
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for (const auto& [key, val] : DirIndex)
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{
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std::string path = val.Path;
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if ((path.find("/./") != std::string::npos) ||
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(path.find("/../") != std::string::npos) ||
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(path.substr(0,2) == "./") ||
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(path.substr(0,3) == "../"))
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{
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removelist.push_back(key);
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continue;
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}
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int sep = path.rfind('/');
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if (sep == std::string::npos) continue;
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path = path.substr(0, sep);
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if (DirIndex.count(path) < 1)
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{
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removelist.push_back(key);
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}
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}
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for (const auto& key : removelist)
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{
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DirIndex.erase(key);
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}
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removelist.clear();
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for (const auto& [key, val] : FileIndex)
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{
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std::string path = val.Path;
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if ((path.find("/./") != std::string::npos) ||
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(path.find("/../") != std::string::npos) ||
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(path.substr(0,2) == "./") ||
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(path.substr(0,3) == "../"))
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{
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removelist.push_back(key);
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continue;
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}
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int sep = path.rfind('/');
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if (sep == std::string::npos) continue;
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path = path.substr(0, sep);
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if (DirIndex.count(path) < 1)
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{
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removelist.push_back(key);
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}
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}
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for (const auto& key : removelist)
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{
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FileIndex.erase(key);
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}
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}
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void FATStorage::SaveIndex()
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{
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FILE* f = Platform::OpenLocalFile(IndexPath.c_str(), "w");
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if (!f) return;
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for (const auto& [key, val] : DirIndex)
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{
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fprintf(f, "DIR %u %s\r\n",
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val.IsReadOnly?1:0, val.Path.c_str());
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}
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for (const auto& [key, val] : FileIndex)
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{
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fprintf(f, "FILE %u %" PRIu64 " %" PRId64 " %u %s\r\n",
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val.IsReadOnly?1:0, val.Size, val.LastModified, val.LastModifiedInternal, val.Path.c_str());
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}
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fclose(f);
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}
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bool FATStorage::ExportFile(std::string path, std::string out, fs::file_time_type& modtime)
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{
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FF_FIL file;
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FILE* fout;
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FRESULT res;
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res = f_open(&file, path.c_str(), FA_OPEN_EXISTING | FA_READ);
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if (res != FR_OK)
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return false;
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u32 len = f_size(&file);
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if (fs::exists(out))
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{
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std::error_code err;
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fs::permissions(out,
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fs::perms::owner_read | fs::perms::owner_write,
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fs::perm_options::add,
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err);
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}
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fout = fopen(out.c_str(), "wb");
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if (!fout)
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{
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f_close(&file);
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return false;
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}
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u8 buf[0x1000];
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for (u32 i = 0; i < len; i += 0x1000)
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{
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u32 blocklen;
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if ((i + 0x1000) > len)
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blocklen = len - i;
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else
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blocklen = 0x1000;
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u32 nread;
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f_read(&file, buf, blocklen, &nread);
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fwrite(buf, blocklen, 1, fout);
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}
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fclose(fout);
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f_close(&file);
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modtime = fs::last_write_time(out);
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return true;
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}
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void FATStorage::ExportDirectory(std::string path, std::string outbase, int level)
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{
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if (level >= 32) return;
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FF_DIR dir;
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FF_FILINFO info;
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FRESULT res;
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printf("EXPORTING DIRECTORY %s (base %s level %d)\n", path.c_str(), outbase.c_str(), level);
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std::string fullpath = "0:/" + path;
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res = f_opendir(&dir, fullpath.c_str());
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if (res != FR_OK) return;
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std::vector<std::string> subdirlist;
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for (;;)
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{
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res = f_readdir(&dir, &info);
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if (res != FR_OK) break;
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if (!info.fname[0]) break;
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std::string fullpath = path + info.fname;
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if (info.fattrib & AM_DIR)
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{
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if (DirIndex.count(fullpath) < 1)
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{
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std::string dirpath = outbase+"/"+fullpath;
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mkdir(dirpath.c_str());
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DirIndexEntry entry;
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entry.Path = fullpath;
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entry.IsReadOnly = (info.fattrib & AM_RDO) != 0;
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DirIndex[entry.Path] = entry;
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}
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subdirlist.push_back(fullpath);
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}
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else
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{
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bool doexport = false;
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printf("- FILE %s ATTRIB %08X\n", fullpath.c_str(), info.fattrib);
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if (FileIndex.count(fullpath) < 1)
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{
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doexport = true;
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FileIndexEntry entry;
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entry.Path = fullpath;
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entry.IsReadOnly = (info.fattrib & AM_RDO) != 0;
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entry.Size = info.fsize;
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entry.LastModifiedInternal = (info.fdate << 16) | info.ftime;
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FileIndex[entry.Path] = entry;
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}
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else
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{
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u32 lastmod = (info.fdate << 16) | info.ftime;
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FileIndexEntry& entry = FileIndex[fullpath];
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if ((info.fsize != entry.Size) || (lastmod != entry.LastModifiedInternal))
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doexport = true;
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entry.Size = info.fsize;
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entry.LastModifiedInternal = lastmod;
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}
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if (doexport)
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{
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printf("EXPORTING FILE 0:/%s TO %s/%s\n", fullpath.c_str(), outbase.c_str(), fullpath.c_str());
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fs::file_time_type modtime;
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if (ExportFile("0:/"+fullpath, outbase+"/"+fullpath, modtime))
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{
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s64 modtime_raw = std::chrono::duration_cast<std::chrono::seconds>(modtime.time_since_epoch()).count();
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FileIndexEntry& entry = FileIndex[fullpath];
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entry.LastModified = modtime_raw;
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}
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else
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{
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// ??????
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}
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}
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}
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std::error_code err;
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fs::permissions(outbase+"/"+fullpath,
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fs::perms::owner_read | fs::perms::owner_write,
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(info.fattrib & AM_RDO) ? fs::perm_options::remove : fs::perm_options::add,
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err);
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}
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f_closedir(&dir);
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for (auto& entry : subdirlist)
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{
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ExportDirectory(entry+"/", outbase, level+1);
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}
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}
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bool FATStorage::DeleteHostDirectory(std::string path, std::string outbase, int level)
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{
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if (level >= 32) return false;
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std::vector<std::string> filedeletelist;
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std::vector<std::string> dirdeletelist;
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printf("-- PURGING HOST DIRECTORY %s (base %s) LEVEL=%d\n", path.c_str(), outbase.c_str(), level);
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int outlen = outbase.length();
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for (auto& entry : fs::directory_iterator(outbase + "/" + path))
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{
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std::string fullpath = entry.path().string();
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std::string innerpath = fullpath.substr(outlen);
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if (innerpath[0] == '/' || innerpath[0] == '\\')
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innerpath = innerpath.substr(1);
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int ilen = innerpath.length();
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for (int i = 0; i < ilen; i++)
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{
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if (innerpath[i] == '\\')
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innerpath[i] = '/';
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}
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printf("---- ENTRY %s (%d)\n", innerpath.c_str(), entry.is_directory());
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if (entry.is_directory())
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{
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dirdeletelist.push_back(innerpath);
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}
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else
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{
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filedeletelist.push_back(innerpath);
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}
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}
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for (const auto& key : filedeletelist)
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{
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std::string fullpath = outbase + "/" + key;
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std::error_code err;
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fs::permissions(fullpath,
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fs::perms::owner_read | fs::perms::owner_write,
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fs::perm_options::add,
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err);
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if (!fs::remove(fullpath))
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return false;
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FileIndex.erase(key);
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}
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for (const auto& key : dirdeletelist)
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{
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if (!DeleteHostDirectory(key, outbase, level+1))
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return false;
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}
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{
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std::string fullpath = outbase + "/" + path;
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printf("DELETING DIR ITSELF: %s\n", fullpath.c_str());
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std::error_code err;
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fs::permissions(fullpath,
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fs::perms::owner_read | fs::perms::owner_write,
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fs::perm_options::add,
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err);
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if (!fs::remove(fullpath)){printf("DICKPILE %d\n", errno);
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return false;}
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DirIndex.erase(path);
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}
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return true;
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}
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void FATStorage::ExportChanges(std::string outbase)
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{
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// reflect changes in the FAT volume to the host filesystem
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// * delete directories and files that exist in the index but not in the volume
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// * copy files to the host FS if they exist within the index and their size or
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// internal last-modified time is different
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// * index and copy directories and files that exist in the volume but not in
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// the index
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std::vector<std::string> deletelist;
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for (const auto& [key, val] : FileIndex)
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{
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std::string innerpath = "0:/" + val.Path;
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FF_FILINFO finfo;
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FRESULT res = f_stat(innerpath.c_str(), &finfo);
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if (res == FR_OK)
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{
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if (finfo.fattrib & AM_DIR)
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{
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deletelist.push_back(key);
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}
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}
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else if (res == FR_NO_FILE || res == FR_NO_PATH)
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{
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deletelist.push_back(key);
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}
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}
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for (const auto& key : deletelist)
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{
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std::string fullpath = outbase + "/" + key;
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printf("DELETING FILE %s\n", fullpath.c_str());
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std::error_code err;
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fs::permissions(fullpath,
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fs::perms::owner_read | fs::perms::owner_write,
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fs::perm_options::add,
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err);
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fs::remove(fullpath);
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FileIndex.erase(key);
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}
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deletelist.clear();
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for (const auto& [key, val] : DirIndex)
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{
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std::string innerpath = "0:/" + val.Path;
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FF_FILINFO finfo;
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FRESULT res = f_stat(innerpath.c_str(), &finfo);
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if (res == FR_OK)
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{
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if (!(finfo.fattrib & AM_DIR))
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{
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deletelist.push_back(key);
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}
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}
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else if (res == FR_NO_FILE || res == FR_NO_PATH)
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{
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deletelist.push_back(key);
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}
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}
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for (const auto& key : deletelist)
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{
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printf("DELETING DIRECTORY %s\n", key.c_str());
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DeleteHostDirectory(key, outbase, 0);
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}
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ExportDirectory("", outbase, 0);
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}
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bool FATStorage::CanFitFile(u32 len)
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{
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FATFS* fs;
|
|
DWORD freeclusters;
|
|
FRESULT res;
|
|
|
|
res = f_getfree("0:", &freeclusters, &fs);
|
|
if (res != FR_OK) return false;
|
|
|
|
u32 clustersize = fs->csize * 0x200;
|
|
printf("CHECK IF FILE CAN FIT: len=%d, clus=%d, num=%d, free=%d\n",
|
|
len, clustersize, (len + clustersize - 1) / clustersize, freeclusters);
|
|
len = (len + clustersize - 1) / clustersize;
|
|
return (freeclusters >= len);
|
|
}
|
|
|
|
bool FATStorage::DeleteDirectory(std::string path, int level)
|
|
{
|
|
if (level >= 32) return false;
|
|
if (path.length() < 1) return false;
|
|
|
|
FF_DIR dir;
|
|
FF_FILINFO info;
|
|
FRESULT res;
|
|
|
|
std::string fullpath = "0:/" + path;
|
|
f_chmod(fullpath.c_str(), 0, AM_RDO);
|
|
res = f_opendir(&dir, fullpath.c_str());
|
|
if (res != FR_OK) return false;
|
|
|
|
std::vector<std::string> deletelist;
|
|
std::vector<std::string> subdirlist;
|
|
int survivors = 0;
|
|
|
|
for (;;)
|
|
{
|
|
res = f_readdir(&dir, &info);
|
|
if (res != FR_OK) break;
|
|
if (!info.fname[0]) break;
|
|
|
|
std::string fullpath = path + info.fname;
|
|
|
|
if (info.fattrib & AM_DIR)
|
|
{
|
|
subdirlist.push_back(fullpath);
|
|
}
|
|
else
|
|
{
|
|
deletelist.push_back(fullpath);
|
|
}
|
|
}
|
|
|
|
f_closedir(&dir);
|
|
|
|
for (auto& entry : deletelist)
|
|
{
|
|
std::string fullpath = "0:/" + entry;
|
|
f_chmod(fullpath.c_str(), 0, AM_RDO);
|
|
res = f_unlink(fullpath.c_str());
|
|
if (res != FR_OK) return false;
|
|
}
|
|
|
|
for (auto& entry : subdirlist)
|
|
{
|
|
if (!DeleteDirectory(entry+"/", level+1)) return false;
|
|
|
|
std::string fullpath = "0:/" + entry;
|
|
f_chmod(fullpath.c_str(), 0, AM_RDO);
|
|
res = f_unlink(fullpath.c_str());
|
|
if (res != FR_OK) return false;
|
|
}
|
|
|
|
res = f_unlink(fullpath.c_str());
|
|
if (res != FR_OK) return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
void FATStorage::CleanupDirectory(std::string sourcedir, std::string path, int level)
|
|
{
|
|
if (level >= 32) return;
|
|
|
|
FF_DIR dir;
|
|
FF_FILINFO info;
|
|
FRESULT res;
|
|
printf("CLEANING UP DIRECTORY %s (level=%d)\n", path.c_str(), level);
|
|
std::string fullpath = "0:/" + path;
|
|
res = f_opendir(&dir, fullpath.c_str());
|
|
if (res != FR_OK) return;
|
|
|
|
std::vector<std::string> filedeletelist;
|
|
std::vector<std::string> dirdeletelist;
|
|
std::vector<std::string> subdirlist;
|
|
|
|
for (;;)
|
|
{
|
|
res = f_readdir(&dir, &info);
|
|
if (res != FR_OK) break;
|
|
if (!info.fname[0]) break;
|
|
|
|
std::string fullpath = path + info.fname;
|
|
printf("FOUND ENTRY %s %08X (%d/%d, %d)\n",
|
|
fullpath.c_str(), info.fattrib, FileIndex.count(fullpath), DirIndex.count(fullpath),
|
|
fs::exists(sourcedir+"/"+fullpath));
|
|
if (info.fattrib & AM_DIR)
|
|
{
|
|
if (DirIndex.count(fullpath) < 1)
|
|
dirdeletelist.push_back(fullpath);
|
|
else if (!fs::is_directory(sourcedir+"/"+fullpath))
|
|
{
|
|
DirIndex.erase(fullpath);
|
|
dirdeletelist.push_back(fullpath);
|
|
}
|
|
else
|
|
subdirlist.push_back(fullpath);
|
|
}
|
|
else
|
|
{
|
|
if (FileIndex.count(fullpath) < 1)
|
|
filedeletelist.push_back(fullpath);
|
|
else if (!fs::is_regular_file(sourcedir+"/"+fullpath))
|
|
{
|
|
FileIndex.erase(fullpath);
|
|
filedeletelist.push_back(fullpath);
|
|
}
|
|
}
|
|
}
|
|
|
|
f_closedir(&dir);
|
|
|
|
for (auto& entry : filedeletelist)
|
|
{
|
|
std::string fullpath = "0:/" + entry;
|
|
f_chmod(fullpath.c_str(), 0, AM_RDO);
|
|
f_unlink(fullpath.c_str());
|
|
}
|
|
|
|
for (auto& entry : dirdeletelist)
|
|
{
|
|
DeleteDirectory(entry+"/", level+1);
|
|
}
|
|
|
|
for (auto& entry : subdirlist)
|
|
{
|
|
CleanupDirectory(sourcedir, entry+"/", level+1);
|
|
}
|
|
}
|
|
|
|
bool FATStorage::ImportFile(std::string path, std::string in)
|
|
{
|
|
FF_FIL file;
|
|
FILE* fin;
|
|
FRESULT res;
|
|
|
|
fin = fopen(in.c_str(), "rb");
|
|
if (!fin)
|
|
return false;
|
|
|
|
fseek(fin, 0, SEEK_END);
|
|
u32 len = (u32)ftell(fin);
|
|
fseek(fin, 0, SEEK_SET);
|
|
|
|
if (!CanFitFile(len))
|
|
{
|
|
fclose(fin);
|
|
return false;
|
|
}
|
|
|
|
res = f_open(&file, path.c_str(), FA_CREATE_ALWAYS | FA_WRITE);
|
|
if (res != FR_OK)
|
|
{
|
|
fclose(fin);
|
|
return false;
|
|
}
|
|
|
|
u8 buf[0x1000];
|
|
for (u32 i = 0; i < len; i += 0x1000)
|
|
{
|
|
u32 blocklen;
|
|
if ((i + 0x1000) > len)
|
|
blocklen = len - i;
|
|
else
|
|
blocklen = 0x1000;
|
|
|
|
u32 nwrite;
|
|
fread(buf, blocklen, 1, fin);
|
|
f_write(&file, buf, blocklen, &nwrite);
|
|
}
|
|
|
|
fclose(fin);
|
|
f_close(&file);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool FATStorage::BuildSubdirectory(const char* sourcedir, const char* path, int level)
|
|
{
|
|
if (level >= 32)
|
|
{
|
|
printf("FATStorage::BuildSubdirectory: too many subdirectory levels, skipping\n");
|
|
return false;
|
|
}
|
|
|
|
if (level == 0)
|
|
{
|
|
// remove whatever isn't in the index
|
|
CleanupDirectory(sourcedir, "", 0);
|
|
|
|
int srclen = strlen(sourcedir);
|
|
|
|
// iterate through the host directory:
|
|
// * directories will be added if they aren't in the index
|
|
// * files will be added if they aren't in the index, or if the size or last-modified-date don't match
|
|
for (auto& entry : fs::recursive_directory_iterator(sourcedir))
|
|
{
|
|
std::string fullpath = entry.path().string();
|
|
std::string innerpath = fullpath.substr(srclen);
|
|
if (innerpath[0] == '/' || innerpath[0] == '\\')
|
|
innerpath = innerpath.substr(1);
|
|
|
|
int ilen = innerpath.length();
|
|
for (int i = 0; i < ilen; i++)
|
|
{
|
|
if (innerpath[i] == '\\')
|
|
innerpath[i] = '/';
|
|
}
|
|
|
|
bool readonly = (entry.status().permissions() & fs::perms::owner_write) == fs::perms::none;
|
|
|
|
//std::chrono::duration<s64> bourf(lastmodified_raw);
|
|
//printf("DORP: %016llX\n", bourf.count());
|
|
|
|
if (entry.is_directory())
|
|
{
|
|
if (DirIndex.count(innerpath) < 1)
|
|
{
|
|
DirIndexEntry ientry;
|
|
ientry.Path = innerpath;
|
|
ientry.IsReadOnly = readonly;
|
|
|
|
innerpath = "0:/" + innerpath;
|
|
FRESULT res = f_mkdir(innerpath.c_str());
|
|
if (res == FR_OK)
|
|
{
|
|
DirIndex[ientry.Path] = ientry;
|
|
|
|
printf("IMPORTING DIR %s (FROM %s), %d\n", innerpath.c_str(), fullpath.c_str(), readonly);
|
|
}
|
|
}
|
|
}
|
|
else if (entry.is_regular_file())
|
|
{
|
|
u64 filesize = entry.file_size();
|
|
|
|
auto lastmodified = entry.last_write_time();
|
|
s64 lastmodified_raw = std::chrono::duration_cast<std::chrono::seconds>(lastmodified.time_since_epoch()).count();
|
|
|
|
bool import = false;
|
|
if (FileIndex.count(innerpath) < 1)
|
|
{
|
|
import = true;
|
|
}
|
|
else
|
|
{
|
|
FileIndexEntry& chk = FileIndex[innerpath];
|
|
if (chk.Size != filesize) import = true;
|
|
if (chk.LastModified != lastmodified_raw) import = true;
|
|
}
|
|
|
|
if (import)
|
|
{
|
|
FileIndexEntry ientry;
|
|
ientry.Path = innerpath;
|
|
ientry.IsReadOnly = readonly;
|
|
ientry.Size = filesize;
|
|
ientry.LastModified = lastmodified_raw;
|
|
|
|
innerpath = "0:/" + innerpath;
|
|
if (ImportFile(innerpath, fullpath))
|
|
{
|
|
FF_FILINFO finfo;
|
|
f_stat(innerpath.c_str(), &finfo);
|
|
|
|
ientry.LastModifiedInternal = (finfo.fdate << 16) | finfo.ftime;
|
|
|
|
FileIndex[ientry.Path] = ientry;
|
|
|
|
printf("IMPORTING FILE %s (FROM %s), %d\n", innerpath.c_str(), fullpath.c_str(), readonly);
|
|
}
|
|
}
|
|
}
|
|
|
|
f_chmod(innerpath.c_str(), readonly?AM_RDO:0, AM_RDO);
|
|
}
|
|
|
|
SaveIndex();
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
return false;
|
|
}
|
|
|
|
bool FATStorage::Build(const char* sourcedir, u64 size, const char* filename)
|
|
{
|
|
FilePath = filename;
|
|
FileSize = size;
|
|
|
|
FF_File = Platform::OpenLocalFile(filename, "r+b");
|
|
if (!FF_File)
|
|
{
|
|
FF_File = Platform::OpenLocalFile(filename, "w+b");
|
|
if (!FF_File)
|
|
return false;
|
|
}
|
|
|
|
IndexPath = FilePath + ".idx";
|
|
LoadIndex();
|
|
|
|
FF_FileSize = size;
|
|
ff_disk_open(FF_ReadStorage, FF_WriteStorage, (LBA_t)(size>>9));
|
|
|
|
FRESULT res;
|
|
FATFS fs;
|
|
|
|
res = f_mount(&fs, "0:", 1);
|
|
if (res != FR_OK)
|
|
{
|
|
// TODO: determine proper FAT type!
|
|
// for example: libfat tries to determine the FAT type from the number of clusters
|
|
// which doesn't match the way fatfs handles autodetection
|
|
//
|
|
// partition->dataStart = partition->rootDirStart + (( u8array_to_u16(sectorBuffer, BPB_rootEntries) * DIR_ENTRY_DATA_SIZE) / partition->bytesPerSector);
|
|
// uint32_t clusterCount = (partition->numberOfSectors - (uint32_t)(partition->dataStart - startSector)) / partition->sectorsPerCluster;
|
|
// FAT12: max cluster count 4085
|
|
// FAT16; max cluster count: 65525
|
|
//
|
|
FF_MKFS_PARM fsopt;
|
|
fsopt.fmt = FM_FAT;// | FM_FAT32;
|
|
fsopt.au_size = 0;
|
|
fsopt.align = 1;
|
|
fsopt.n_fat = 1;
|
|
fsopt.n_root = 512;
|
|
|
|
BYTE workbuf[FF_MAX_SS];
|
|
res = f_mkfs("0:", &fsopt, workbuf, sizeof(workbuf));
|
|
|
|
if (res == FR_OK)
|
|
res = f_mount(&fs, "0:", 1);
|
|
}
|
|
|
|
if (res == FR_OK)
|
|
BuildSubdirectory(sourcedir, "", 0);
|
|
|
|
f_unmount("0:");
|
|
|
|
ff_disk_close();
|
|
fclose(FF_File);
|
|
FF_File = nullptr;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool FATStorage::Save(std::string sourcedir)
|
|
{
|
|
FF_File = Platform::OpenLocalFile(FilePath.c_str(), "r+b");
|
|
if (!FF_File)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
FF_FileSize = FileSize;
|
|
ff_disk_open(FF_ReadStorage, FF_WriteStorage, (LBA_t)(FileSize>>9));
|
|
|
|
FRESULT res;
|
|
FATFS fs;
|
|
|
|
res = f_mount(&fs, "0:", 1);
|
|
if (res != FR_OK)
|
|
{
|
|
ff_disk_close();
|
|
fclose(FF_File);
|
|
FF_File = nullptr;
|
|
return false;
|
|
}
|
|
|
|
ExportChanges("dldi");
|
|
|
|
SaveIndex();
|
|
|
|
f_unmount("0:");
|
|
|
|
ff_disk_close();
|
|
fclose(FF_File);
|
|
FF_File = nullptr;
|
|
|
|
return true;
|
|
}
|