file: refactored the file layer so it only implements business logic

deps/crc32/crc32.c

@@ -350,7 +350,7 @@ crc_t crc_update(crc_t crc, const void *data, size_t data_len)
     const uint32_t *d32 = (const uint32_t *)d;
     while (data_len >= 8)
     {
-#if __BYTE_ORDER == __BIG_ENDIAN
+#if defined(__BYTE_ORDER) && __BYTE_ORDER == __BIG_ENDIAN
         crc_t d1 = *d32++ ^ le16toh(crc);
         crc_t d2 = *d32++;
         crc  =

include/chunkio/cio_file.h

@@ -40,9 +40,8 @@ struct cio_file {
     char *path;               /* root path + stream   */
     char *map;                /* map of data          */
 #ifdef _WIN32
-    void *h;
-    crc_t crc_be;
-    int map_synced;
+    HANDLE backing_file;
+    HANDLE backing_mapping;
 #endif
     /* cached addr */
     char *st_content;
@@ -61,7 +60,7 @@ void cio_file_close(struct cio_chunk *ch, int delete);
 int cio_file_write(struct cio_chunk *ch, const void *buf, size_t count);
 int cio_file_write_metadata(struct cio_chunk *ch, char *buf, size_t size);
 int cio_file_sync(struct cio_chunk *ch);
-int cio_file_fs_size_change(struct cio_file *cf, size_t new_size);
+int cio_file_resize(struct cio_file *cf, size_t new_size);
 char *cio_file_hash(struct cio_file *cf);
 void cio_file_hash_print(struct cio_file *cf);
 void cio_file_calculate_checksum(struct cio_file *cf, crc_t *out);
@@ -77,5 +76,9 @@ int cio_file_up(struct cio_chunk *ch);
 int cio_file_up_force(struct cio_chunk *ch);
 int cio_file_lookup_user(char *user, void **result);
 int cio_file_lookup_group(char *group, void **result);
+int cio_file_update_size(struct cio_file *cf);
+
+#define cio_file_report_runtime_error() { cio_file_native_report_runtime_error(); }
+#define cio_file_report_os_error() { cio_file_native_report_os_error(); }
 
 #endif

include/chunkio/cio_file_native.h

@@ -0,0 +1,55 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+
+/*  Chunk I/O
+ *  =========
+ *  Copyright 2018 Eduardo Silva <[email protected]>
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#ifndef CIO_FILE_NATIVE_H
+#define CIO_FILE_NATIVE_H
+
+#include <chunkio/cio_file.h>
+
+
+
+#ifdef _WIN32
+#define cio_file_native_is_open(cf) (cf->backing_file != INVALID_HANDLE_VALUE)
+#define cio_file_native_is_mapped(cf) (cf->backing_mapping != INVALID_HANDLE_VALUE)
+#define cio_file_native_report_runtime_error() { cio_errno(); }
+#define cio_file_native_report_os_error() { cio_winapi_error(); }
+#else
+#define cio_file_native_is_open(cf) (cf->fd != -1)
+#define cio_file_native_is_mapped(cf) (cf->map != NULL)
+#define cio_file_native_report_runtime_error() { cio_errno(); }
+#define cio_file_native_report_os_error() { cio_errno(); }
+#endif
+
+int cio_file_native_apply_acl_and_settings(struct cio_ctx *ctx, struct cio_file *cf);
+char *cio_file_native_compose_path(char *root_path, char *stream_name, 
+                                   char *chunk_name);
+int cio_file_native_unmap(struct cio_file *cf);
+int cio_file_native_map(struct cio_file *cf, size_t map_size);
+int cio_file_native_remap(struct cio_file *cf, size_t new_size);
+int cio_file_native_lookup_user(char *user, void **result);
+int cio_file_native_lookup_group(char *group, void **result);
+int cio_file_native_get_size(struct cio_file *cf, size_t *file_size);
+int cio_file_native_filename_check(char *name);
+int cio_file_native_open(struct cio_file *cf);
+int cio_file_native_close(struct cio_file *cf);
+int cio_file_native_delete(struct cio_file *cf);
+int cio_file_native_sync(struct cio_file *cf, int sync_mode);
+int cio_file_native_resize(struct cio_file *cf, size_t new_size);
+
+#endif

include/chunkio/cio_file_st.h

@@ -75,8 +75,8 @@ static inline uint16_t cio_file_st_get_meta_len(char *map)
 /* Set metadata length */
 static inline void cio_file_st_set_meta_len(char *map, uint16_t len)
 {
-    map[22] = (uint8_t) len >> 8;
-    map[23] = (uint8_t) len;
+    map[22] = (uint8_t) (len >> 8);
+    map[23] = (uint8_t) (len & 0xFF);
 }
 
 /* Return pointer to start point of metadata */

src/CMakeLists.txt

@@ -1,6 +1,7 @@
 set(src
   cio_os.c
   cio_log.c
+  cio_file.c
   cio_memfs.c
   cio_chunk.c
   cio_meta.c
@@ -27,7 +28,7 @@ if(${CMAKE_SYSTEM_NAME} MATCHES "Windows")
 else()
   set(src
     ${src}
-    cio_file.c
+    cio_file_unix.c
     )
 endif()