diff options
Diffstat (limited to 'lib/sqfs/src/win32')
| -rw-r--r-- | lib/sqfs/src/win32/io_file.c | 271 | ||||
| -rw-r--r-- | lib/sqfs/src/win32/istream.c | 190 | ||||
| -rw-r--r-- | lib/sqfs/src/win32/ostream.c | 201 |
3 files changed, 0 insertions, 662 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; -} diff --git a/lib/sqfs/src/win32/istream.c b/lib/sqfs/src/win32/istream.c deleted file mode 100644 index aeb3352..0000000 --- a/lib/sqfs/src/win32/istream.c +++ /dev/null @@ -1,190 +0,0 @@ -/* SPDX-License-Identifier: LGPL-3.0-or-later */ -/* - * istream.c - * - * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at> - */ -#define SQFS_BUILDING_DLL -#include "config.h" - -#include "sqfs/io.h" -#include "sqfs/error.h" - -#define BUFSZ (131072) - -#define WIN32_LEAN_AND_MEAN -#include <windows.h> -#include <assert.h> - -typedef struct { - sqfs_istream_t base; - char *path; - HANDLE hnd; - - bool eof; - size_t buffer_offset; - size_t buffer_used; - sqfs_u8 buffer[BUFSZ]; -} file_istream_t; - -static int precache(sqfs_istream_t *strm) -{ - file_istream_t *file = (file_istream_t *)strm; - DWORD diff, actual; - - if (file->eof) - return 0; - - if (file->buffer_offset > 0 && - file->buffer_offset < file->buffer_used) { - memmove(file->buffer, file->buffer + file->buffer_offset, - file->buffer_used - file->buffer_offset); - } - - file->buffer_used -= file->buffer_offset; - file->buffer_offset = 0; - - while (file->buffer_used < sizeof(file->buffer)) { - diff = sizeof(file->buffer) - file->buffer_used; - - if (!ReadFile(file->hnd, file->buffer + file->buffer_used, - diff, &actual, NULL)) { - os_error_t error = get_os_error_state(); - - if (error.w32_errno == ERROR_HANDLE_EOF || - error.w32_errno == ERROR_BROKEN_PIPE) { - file->eof = true; - break; - } - - set_os_error_state(error); - return SQFS_ERROR_IO; - } - - if (actual == 0) { - file->eof = true; - break; - } - - file->buffer_used += actual; - } - - return 0; -} - -static int file_get_buffered_data(sqfs_istream_t *strm, const sqfs_u8 **out, - size_t *size, size_t want) -{ - file_istream_t *file = (file_istream_t *)strm; - - if (want > BUFSZ) - want = BUFSZ; - - if (file->buffer_used == 0 || - (file->buffer_used - file->buffer_offset) < want) { - int ret = precache(strm); - if (ret) - return ret; - } - - *out = file->buffer + file->buffer_offset; - *size = file->buffer_used - file->buffer_offset; - return (file->eof && *size == 0) ? 1 : 0; -} - -static void file_advance_buffer(sqfs_istream_t *strm, size_t count) -{ - file_istream_t *file = (file_istream_t *)strm; - - assert(count <= file->buffer_used); - - file->buffer_offset += count; - - assert(file->buffer_offset <= file->buffer_used); -} - -static const char *file_get_filename(sqfs_istream_t *strm) -{ - return ((file_istream_t *)strm)->path; -} - -static void file_destroy(sqfs_object_t *obj) -{ - file_istream_t *file = (file_istream_t *)obj; - - CloseHandle(file->hnd); - free(file->path); - free(file); -} - -int sqfs_istream_open_handle(sqfs_istream_t **out, const char *path, - sqfs_file_handle_t hnd, sqfs_u32 flags) -{ - file_istream_t *file; - sqfs_istream_t *strm; - BOOL ret; - - if (flags & ~(SQFS_FILE_OPEN_ALL_FLAGS)) - return SQFS_ERROR_UNSUPPORTED; - - file = calloc(1, sizeof(*file)); - strm = (sqfs_istream_t *)file; - if (file == NULL) - return SQFS_ERROR_ALLOC; - - sqfs_object_init(file, file_destroy, NULL); - - file->path = strdup(path); - if (file->path == NULL) { - os_error_t err = get_os_error_state(); - free(file); - set_os_error_state(err); - return SQFS_ERROR_ALLOC; - } - - ret = DuplicateHandle(GetCurrentProcess(), hnd, - GetCurrentProcess(), &file->hnd, - 0, FALSE, DUPLICATE_SAME_ACCESS); - if (!ret) { - os_error_t err = get_os_error_state(); - free(file->path); - free(file); - set_os_error_state(err); - return SQFS_ERROR_IO; - } - - CloseHandle(hnd); - - strm->get_buffered_data = file_get_buffered_data; - strm->advance_buffer = file_advance_buffer; - strm->get_filename = file_get_filename; - - *out = strm; - return 0; -} - -int sqfs_istream_open_file(sqfs_istream_t **out, const char *path, - sqfs_u32 flags) -{ - sqfs_file_handle_t hnd; - int ret; - - flags |= SQFS_FILE_OPEN_READ_ONLY; - - if (flags & (SQFS_FILE_OPEN_OVERWRITE | SQFS_FILE_OPEN_NO_SPARSE)) - return SQFS_ERROR_ARG_INVALID; - - ret = sqfs_open_native_file(&hnd, path, flags); - if (ret) - return ret; - - ret = sqfs_istream_open_handle(out, path, hnd, flags); - if (ret) { - os_error_t err = get_os_error_state(); - CloseHandle(hnd); - set_os_error_state(err); - return ret; - } - - return 0; -} diff --git a/lib/sqfs/src/win32/ostream.c b/lib/sqfs/src/win32/ostream.c deleted file mode 100644 index 2f85c29..0000000 --- a/lib/sqfs/src/win32/ostream.c +++ /dev/null @@ -1,201 +0,0 @@ -/* SPDX-License-Identifier: LGPL-3.0-or-later */ -/* - * ostream.c - * - * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at> - */ -#define SQFS_BUILDING_DLL -#include "config.h" - -#include "sqfs/io.h" -#include "sqfs/error.h" - -#define WIN32_LEAN_AND_MEAN -#include <windows.h> - -typedef struct { - sqfs_ostream_t base; - sqfs_u64 sparse_count; - char *path; - HANDLE hnd; - int flags; -} file_ostream_t; - -static int write_data(file_ostream_t *file, const void *data, size_t size) -{ - DWORD diff; - - while (size > 0) { - if (!WriteFile(file->hnd, data, size, &diff, NULL)) - return SQFS_ERROR_IO; - - size -= diff; - data = (const char *)data + diff; - } - - return 0; -} - -static int realize_sparse(file_ostream_t *file) -{ - size_t bufsz, diff; - LARGE_INTEGER pos; - void *buffer; - int ret; - - if (file->sparse_count == 0) - return 0; - - if (file->flags & SQFS_FILE_OPEN_NO_SPARSE) { - bufsz = file->sparse_count > 1024 ? 1024 : file->sparse_count; - buffer = calloc(1, bufsz); - - if (buffer == NULL) - return SQFS_ERROR_ALLOC; - - while (file->sparse_count > 0) { - diff = file->sparse_count > bufsz ? - bufsz : file->sparse_count; - - ret = write_data(file, buffer, diff); - if (ret) { - os_error_t err = get_os_error_state(); - free(buffer); - set_os_error_state(err); - return ret; - } - - file->sparse_count -= diff; - } - - free(buffer); - } else { - pos.QuadPart = file->sparse_count; - - if (!SetFilePointerEx(file->hnd, pos, NULL, FILE_CURRENT)) - return SQFS_ERROR_IO; - - if (!SetEndOfFile(file->hnd)) - return SQFS_ERROR_IO; - - file->sparse_count = 0; - } - - return 0; -} - -static int file_append(sqfs_ostream_t *strm, const void *data, size_t size) -{ - file_ostream_t *file = (file_ostream_t *)strm; - int ret; - - if (size == 0 || data == NULL) { - file->sparse_count += size; - return 0; - } - - ret = realize_sparse(file); - if (ret) - return ret; - - return write_data(file, data, size); -} - -static int file_flush(sqfs_ostream_t *strm) -{ - file_ostream_t *file = (file_ostream_t *)strm; - int ret; - - ret = realize_sparse(file); - if (ret) - return ret; - - if (!FlushFileBuffers(file->hnd)) - return SQFS_ERROR_IO; - - return 0; -} - -static void file_destroy(sqfs_object_t *obj) -{ - file_ostream_t *file = (file_ostream_t *)obj; - - CloseHandle(file->hnd); - free(file->path); - free(file); -} - -static const char *file_get_filename(sqfs_ostream_t *strm) -{ - return ((file_ostream_t *)strm)->path; -} - -int sqfs_ostream_open_handle(sqfs_ostream_t **out, const char *path, - sqfs_file_handle_t hnd, sqfs_u32 flags) -{ - file_ostream_t *file; - sqfs_ostream_t *strm; - BOOL ret; - - if (flags & ~(SQFS_FILE_OPEN_ALL_FLAGS)) - return SQFS_ERROR_UNSUPPORTED; - - file = calloc(1, sizeof(*file)); - strm = (sqfs_ostream_t *)file; - if (file == NULL) - return SQFS_ERROR_ALLOC; - - sqfs_object_init(file, file_destroy, NULL); - - file->path = strdup(path); - if (file->path == NULL) { - free(file); - return SQFS_ERROR_ALLOC; - } - - ret = DuplicateHandle(GetCurrentProcess(), hnd, - GetCurrentProcess(), &file->hnd, - 0, FALSE, DUPLICATE_SAME_ACCESS); - if (!ret) { - os_error_t err = get_os_error_state(); - free(file->path); - free(file); - set_os_error_state(err); - return SQFS_ERROR_IO; - } - - CloseHandle(hnd); - - file->flags = flags; - strm->append = file_append; - strm->flush = file_flush; - strm->get_filename = file_get_filename; - - *out = strm; - return 0; -} - -int sqfs_ostream_open_file(sqfs_ostream_t **out, const char *path, - sqfs_u32 flags) -{ - sqfs_file_handle_t hnd; - int ret; - - *out = NULL; - if (flags & SQFS_FILE_OPEN_READ_ONLY) - return SQFS_ERROR_ARG_INVALID; - - ret = sqfs_open_native_file(&hnd, path, flags); - if (ret) - return ret; - - ret = sqfs_ostream_open_handle(out, path, hnd, flags); - if (ret) { - os_error_t err = get_os_error_state(); - CloseHandle(hnd); - set_os_error_state(err); - return SQFS_ERROR_IO; - } - - return 0; -} |