Add Windows implementation for sqfs_file_t

This commit moves the generic unix implementation into a "unix"
subdirectory and adds a "win32" subdirectory with a winapi based
implementation.

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 0 insertions, 163 deletions

diff --git a/lib/sqfs/io_file.c b/lib/sqfs/io_file.c
deleted file mode 100644
index f93af4d..0000000
--- a/lib/sqfs/io_file.c
+++ /dev/null
@@ -1,163 +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 <sys/stat.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <fcntl.h>
-
-
-typedef struct {
-	sqfs_file_t base;
-
-	sqfs_u64 size;
-	int fd;
-} sqfs_file_stdio_t;
-
-
-static void stdio_destroy(sqfs_file_t *base)
-{
-	sqfs_file_stdio_t *file = (sqfs_file_stdio_t *)base;
-
-	close(file->fd);
-	free(file);
-}
-
-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;
-	ssize_t ret;
-
-	while (size > 0) {
-		ret = pread(file->fd, buffer, size, offset);
-
-		if (ret < 0) {
-			if (errno == EINTR)
-				continue;
-			return SQFS_ERROR_IO;
-		}
-
-		if (ret == 0)
-			return SQFS_ERROR_OUT_OF_BOUNDS;
-
-		buffer = (char *)buffer + ret;
-		size -= ret;
-		offset += ret;
-	}
-
-	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;
-	ssize_t ret;
-
-	while (size > 0) {
-		ret = pwrite(file->fd, buffer, size, offset);
-
-		if (ret < 0) {
-			if (errno == EINTR)
-				continue;
-			return SQFS_ERROR_IO;
-		}
-
-		if (ret == 0)
-			return SQFS_ERROR_OUT_OF_BOUNDS;
-
-		buffer = (const char *)buffer + ret;
-		size -= ret;
-		offset += ret;
-	}
-
-	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;
-
-	if (ftruncate(file->fd, size))
-		return SQFS_ERROR_IO;
-
-	file->size = size;
-	return 0;
-}
-
-
-sqfs_file_t *sqfs_open_file(const char *filename, sqfs_u32 flags)
-{
-	sqfs_file_stdio_t *file;
-	int open_mode, temp;
-	sqfs_file_t *base;
-	struct stat sb;
-
-	if (flags & ~SQFS_FILE_OPEN_ALL_FLAGS) {
-		errno = EINVAL;
-		return NULL;
-	}
-
-	file = calloc(1, sizeof(*file));
-	base = (sqfs_file_t *)file;
-	if (file == NULL)
-		return NULL;
-
-	if (flags & SQFS_FILE_OPEN_READ_ONLY) {
-		open_mode = O_RDONLY;
-	} else {
-		open_mode = O_CREAT | O_RDWR;
-
-		if (flags & SQFS_FILE_OPEN_OVERWRITE) {
-			open_mode |= O_TRUNC;
-		} else {
-			open_mode |= O_EXCL;
-		}
-	}
-
-	file->fd = open(filename, open_mode, 0600);
-	if (file->fd < 0) {
-		temp = errno;
-		free(file);
-		errno = temp;
-		return NULL;
-	}
-
-	if (fstat(file->fd, &sb)) {
-		temp = errno;
-		close(file->fd);
-		free(file);
-		errno = temp;
-		return NULL;
-	}
-
-	file->size = sb.st_size;
-
-	base->destroy = stdio_destroy;
-	base->read_at = stdio_read_at;
-	base->write_at = stdio_write_at;
-	base->get_size = stdio_get_size;
-	base->truncate = stdio_truncate;
-	return base;
-}