mirror of
https://github.com/wiiu-env/libmocha.git
synced 2024-11-17 00:49:24 +01:00
87 lines
3.1 KiB
C++
87 lines
3.1 KiB
C++
#include "devoptab_fs.h"
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#include "logger.h"
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#include <mutex>
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// Extended "magic" value that allows opening files with FS_OPEN_FLAG_UNENCRYPTED in underlying FSOpenFileEx() call similar to O_DIRECTORY
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#ifndef O_UNENCRYPTED
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#define O_UNENCRYPTED 0x4000000
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#endif
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int __fsa_open(struct _reent *r,
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void *fileStruct,
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const char *path,
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int flags,
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int mode) {
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FSAFileHandle fd;
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FSError status;
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const char *fsMode;
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__fsa_file_t *file;
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if (!fileStruct || !path) {
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r->_errno = EINVAL;
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return -1;
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}
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// Map flags to open modes
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int commonFlagMask = O_CREAT | O_TRUNC | O_APPEND;
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if (((flags & O_ACCMODE) == O_RDONLY) && !(flags & commonFlagMask)) {
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fsMode = "r";
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} else if (((flags & O_ACCMODE) == O_RDWR) && !(flags & commonFlagMask)) {
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fsMode = "r+";
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} else if (((flags & O_ACCMODE) == O_WRONLY) && ((flags & commonFlagMask) == (O_CREAT | O_TRUNC))) {
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fsMode = "w";
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} else if (((flags & O_ACCMODE) == O_RDWR) && ((flags & commonFlagMask) == (O_CREAT | O_TRUNC))) {
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fsMode = "w+";
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} else if (((flags & O_ACCMODE) == O_WRONLY) && ((flags & commonFlagMask) == (O_CREAT | O_APPEND))) {
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fsMode = "a";
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} else if (((flags & O_ACCMODE) == O_RDWR) && ((flags & commonFlagMask) == (O_CREAT | O_APPEND))) {
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fsMode = "a+";
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} else {
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r->_errno = EINVAL;
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return -1;
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}
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char *fixedPath = __fsa_fixpath(r, path);
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if (!fixedPath) {
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r->_errno = ENOMEM;
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return -1;
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}
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// Open the file
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FSOpenFileFlags openFlags = (mode & O_UNENCRYPTED) ? FS_OPEN_FLAG_ENCRYPTED : FS_OPEN_FLAG_NONE;
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auto *deviceData = (FSADeviceData *) r->deviceData;
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std::lock_guard<FastLockWrapper> lock(deviceData->mutex);
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FSMode translatedMode = __fsa_translate_permission_mode(mode);
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uint32_t preAllocSize = 0;
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status = FSAOpenFileEx(deviceData->clientHandle, fixedPath, fsMode, translatedMode, openFlags, preAllocSize, &fd);
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if (status < 0) {
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DEBUG_FUNCTION_LINE_ERR("FSAOpenFileEx(0x%08X, %s, %s, 0x%X, 0x%08X, 0x%08X, 0x%08X) failed: %s", deviceData->clientHandle, fixedPath, fsMode, translatedMode, openFlags, preAllocSize, &fd, FSAGetStatusStr(status));
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r->_errno = __fsa_translate_error(status);
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free(fixedPath);
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return -1;
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}
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file = (__fsa_file_t *) fileStruct;
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file->fd = fd;
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file->flags = (flags & (O_ACCMODE | O_APPEND | O_SYNC));
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strncpy(file->path, fixedPath, FS_MAX_PATH);
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free(fixedPath);
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if (flags & O_APPEND) {
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status = FSAGetPosFile(deviceData->clientHandle, fd, &file->offset);
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if (status < 0) {
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DEBUG_FUNCTION_LINE_ERR("FSAGetPosFile(0x%08X, 0x%08X, 0x%08X) failed: %s", deviceData->clientHandle, fd, &file->offset, FSAGetStatusStr(status));
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r->_errno = __fsa_translate_error(status);
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if (FSACloseFile(deviceData->clientHandle, fd) < 0) {
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DEBUG_FUNCTION_LINE_ERR("FSACloseFile(0x%08X, 0x%08X) failed: %s", deviceData->clientHandle, fd, FSAGetStatusStr(status));
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}
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return -1;
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}
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}
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return 0;
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} |