diff options
Diffstat (limited to 'lib/sqfs/src/win32/io_file.c')
| -rw-r--r-- | lib/sqfs/src/win32/io_file.c | 271 |
1 files changed, 0 insertions, 271 deletions
diff --git a/lib/sqfs/src/win32/io_file.c b/lib/sqfs/src/win32/io_file.c deleted file mode 100644 index 4d76b94..0000000 --- a/lib/sqfs/src/win32/io_file.c +++ /dev/null @@ -1,271 +0,0 @@ -/* SPDX-License-Identifier: LGPL-3.0-or-later */ -/* - * io_file.c - * - * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at> - */ -#define SQFS_BUILDING_DLL -#include "config.h" - -#include "sqfs/io.h" -#include "sqfs/error.h" -#include "compat.h" - -#include <stdlib.h> - -#define WIN32_LEAN_AND_MEAN -#include <windows.h> - - -typedef struct { - sqfs_file_t base; - - bool readonly; - sqfs_u64 size; - sqfs_file_handle_t fd; - - char name[]; -} sqfs_file_stdio_t; - - -static void stdio_destroy(sqfs_object_t *base) -{ - sqfs_file_stdio_t *file = (sqfs_file_stdio_t *)base; - - CloseHandle(file->fd); - free(file); -} - -static sqfs_object_t *stdio_copy(const sqfs_object_t *base) -{ - const sqfs_file_stdio_t *file = (const sqfs_file_stdio_t *)base; - sqfs_file_stdio_t *copy; - size_t size; - BOOL ret; - - if (!file->readonly) { - SetLastError(ERROR_NOT_SUPPORTED); - return NULL; - } - - size = sizeof(*file) + strlen(file->name) + 1; - copy = calloc(1, size); - if (copy == NULL) - return NULL; - - memcpy(copy, file, size); - - ret = DuplicateHandle(GetCurrentProcess(), file->fd, - GetCurrentProcess(), ©->fd, - 0, FALSE, DUPLICATE_SAME_ACCESS); - - if (!ret) { - os_error_t err = get_os_error_state(); - free(copy); - set_os_error_state(err); - return NULL; - } - - return (sqfs_object_t *)copy; -} - -static int stdio_read_at(sqfs_file_t *base, sqfs_u64 offset, - void *buffer, size_t size) -{ - sqfs_file_stdio_t *file = (sqfs_file_stdio_t *)base; - DWORD actually_read; - LARGE_INTEGER pos; - - if (offset >= file->size) - return SQFS_ERROR_OUT_OF_BOUNDS; - - if (size == 0) - return 0; - - if ((offset + size - 1) >= file->size) - return SQFS_ERROR_OUT_OF_BOUNDS; - - pos.QuadPart = offset; - - if (!SetFilePointerEx(file->fd, pos, NULL, FILE_BEGIN)) - return SQFS_ERROR_IO; - - while (size > 0) { - if (!ReadFile(file->fd, buffer, size, &actually_read, NULL)) - return SQFS_ERROR_IO; - - size -= actually_read; - buffer = (char *)buffer + actually_read; - } - - return 0; -} - -static int stdio_write_at(sqfs_file_t *base, sqfs_u64 offset, - const void *buffer, size_t size) -{ - sqfs_file_stdio_t *file = (sqfs_file_stdio_t *)base; - DWORD actually_read; - LARGE_INTEGER pos; - - if (size == 0) - return 0; - - pos.QuadPart = offset; - - if (!SetFilePointerEx(file->fd, pos, NULL, FILE_BEGIN)) - return SQFS_ERROR_IO; - - while (size > 0) { - if (!WriteFile(file->fd, buffer, size, &actually_read, NULL)) - return SQFS_ERROR_IO; - - size -= actually_read; - buffer = (char *)buffer + actually_read; - offset += actually_read; - - if (offset > file->size) - file->size = offset; - } - - return 0; -} - -static sqfs_u64 stdio_get_size(const sqfs_file_t *base) -{ - const sqfs_file_stdio_t *file = (const sqfs_file_stdio_t *)base; - - return file->size; -} - -static int stdio_truncate(sqfs_file_t *base, sqfs_u64 size) -{ - sqfs_file_stdio_t *file = (sqfs_file_stdio_t *)base; - LARGE_INTEGER pos; - - pos.QuadPart = size; - - if (!SetFilePointerEx(file->fd, pos, NULL, FILE_BEGIN)) - return SQFS_ERROR_IO; - - if (!SetEndOfFile(file->fd)) - return SQFS_ERROR_IO; - - file->size = size; - return 0; -} - -static const char *stdio_get_filename(sqfs_file_t *file) -{ - return ((sqfs_file_stdio_t *)file)->name; -} - -int sqfs_open_native_file(sqfs_file_handle_t *out, const char *filename, - sqfs_u32 flags) -{ - int access_flags, creation_mode, share_mode; - WCHAR *wpath = NULL; - os_error_t err; - DWORD length; - - *out = INVALID_HANDLE_VALUE; - - if (flags & ~SQFS_FILE_OPEN_ALL_FLAGS) { - SetLastError(ERROR_INVALID_PARAMETER); - return SQFS_ERROR_UNSUPPORTED; - } - - if (flags & SQFS_FILE_OPEN_READ_ONLY) { - access_flags = GENERIC_READ; - creation_mode = OPEN_EXISTING; - share_mode = FILE_SHARE_READ; - } else { - access_flags = GENERIC_READ | GENERIC_WRITE; - share_mode = 0; - - if (flags & SQFS_FILE_OPEN_OVERWRITE) { - creation_mode = CREATE_ALWAYS; - } else { - creation_mode = CREATE_NEW; - } - } - - if (flags & SQFS_FILE_OPEN_NO_CHARSET_XFRM) { - *out = CreateFileA(filename, access_flags, share_mode, NULL, - creation_mode, FILE_ATTRIBUTE_NORMAL, NULL); - } else { - length = MultiByteToWideChar(CP_UTF8, 0, filename, -1, NULL, 0); - if (length <= 0) - return SQFS_ERROR_INTERNAL; - - wpath = calloc(sizeof(wpath[0]), length + 1); - if (wpath == NULL) { - SetLastError(ERROR_NOT_ENOUGH_MEMORY); - return SQFS_ERROR_ALLOC; - } - - MultiByteToWideChar(CP_UTF8, 0, filename, -1, - wpath, length + 1); - wpath[length] = '\0'; - - *out = CreateFileW(wpath, access_flags, share_mode, NULL, - creation_mode, FILE_ATTRIBUTE_NORMAL, - NULL); - - err = get_os_error_state(); - free(wpath); - set_os_error_state(err); - } - - return (*out == INVALID_HANDLE_VALUE) ? SQFS_ERROR_IO : 0; -} - -sqfs_file_t *sqfs_open_file(const char *filename, sqfs_u32 flags) -{ - sqfs_file_stdio_t *file; - size_t namelen, total; - LARGE_INTEGER size; - sqfs_file_t *base; - os_error_t err; - - namelen = strlen(filename); - total = sizeof(*file) + 1; - - if (SZ_ADD_OV(total, namelen, &total)) { - SetLastError(ERROR_NOT_ENOUGH_MEMORY); - return NULL; - } - - file = calloc(1, total); - base = (sqfs_file_t *)file; - if (file == NULL) { - SetLastError(ERROR_NOT_ENOUGH_MEMORY); - return NULL; - } - - sqfs_object_init(file, stdio_destroy, stdio_copy); - memcpy(file->name, filename, namelen); - - if (sqfs_open_native_file(&file->fd, filename, flags)) - goto fail; - - if (!GetFileSizeEx(file->fd, &size)) - goto fail; - - file->size = size.QuadPart; - file->readonly = (flags & SQFS_FILE_OPEN_READ_ONLY) != 0; - - base->read_at = stdio_read_at; - base->write_at = stdio_write_at; - base->get_size = stdio_get_size; - base->truncate = stdio_truncate; - base->get_filename = stdio_get_filename; - return base; -fail: - err = get_os_error_state(); - if (file->fd != INVALID_HANDLE_VALUE) - CloseHandle(file->fd); - free(file); - set_os_error_state(err); - return NULL; -} |