Implementation of the fs_shell for ExFAT.

Change-Id: I93533c746e7b52b2a5e46bf6209f871258d11df0
Reviewed-on: https://review.haiku-os.org/c/haiku/+/10476
Reviewed-by: Muhammad Fawad Shah <[email protected]>
Reviewed-by: Raghav Sharma <[email protected]>
Reviewed-by: Adrien Destugues <[email protected]>

headers/private/fs_shell/fssh_convertutf.h

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2014 Jonathan Schleifer <[email protected]>
+ * Copyright 2014 Haiku, Inc. All rights reserved.
+ *
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		Jonathan Schleifer, [email protected]
+ *		John Scipione, [email protected]
+ */
+#ifndef FSSH_CONVERT_UTF_H
+#define FSSH_CONVERT_UTF_H
+
+#include "fssh_api_wrapper.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+ssize_t utf16le_to_utf8(const uint16* source, size_t sourceCodeUnitCount,
+	char* target, size_t targetLength);
+
+ssize_t utf16be_to_utf8(const uint16* source, size_t sourceCodeUnitCount,
+	char* target, size_t targetLength);
+
+
+#ifdef __cplusplus
+};
+#endif
+
+
+#endif	// CONVERT_UTF_H

src/add-ons/kernel/file_systems/exfat/CachedBlock.h

@@ -7,7 +7,6 @@
 
 //!	interface for the block cache
 
-#include <fs_cache.h>
 
 #include "Volume.h"
 

src/add-ons/kernel/file_systems/exfat/DirectoryIterator.cpp

@@ -11,11 +11,6 @@
 
 
 #include "DirectoryIterator.h"
-
-#include <stdlib.h>
-
-#include <util/convertutf.h>
-
 #include "Inode.h"
 
 

src/add-ons/kernel/file_systems/exfat/DirectoryIterator.h

@@ -15,6 +15,7 @@
 #include "CachedBlock.h"
 #include "exfat.h"
 
+
 class Inode;
 
 class EntryVisitor {

src/add-ons/kernel/file_systems/exfat/Inode.cpp

@@ -6,11 +6,6 @@
 
 
 #include "Inode.h"
-
-#include <real_time_clock.h>
-#include <string.h>
-#include <stdlib.h>
-
 #include "CachedBlock.h"
 #include "DataStream.h"
 #include "Utility.h"
@@ -223,8 +218,16 @@ void
 Inode::_GetTimespec(uint16 date, uint16 time, struct timespec &timespec) const
 {
 	static int32 tzoffset = -1; /* in minutes */
-	if (tzoffset == -1)
-		tzoffset = get_timezone_offset() / 60;
+#ifdef _KERNEL_MODE
+	tzoffset = static_cast<int32>(get_timezone_offset());
+#elif defined USER
+	time_t localTime;
+	time(&localTime);
+
+	struct tm localTm;
+	localtime_r(&localTime, &localTm);
+	tzoffset = localTm.tm_gmtoff;
+#endif
 
 	time_t days = daze[(date >> 5) & 15] + ((date >> 9) + 10) * 365
 		+ leaps((date >> 9) + 10, ((date >> 5) & 15) - 1) + (date & 31) -1;

src/add-ons/kernel/file_systems/exfat/Inode.h

@@ -7,15 +7,10 @@
 #define INODE_H
 
 
-#include <fs_cache.h>
-#include <lock.h>
-#include <string.h>
-
-#include <util/SplayTree.h>
-
 #include "DirectoryIterator.h"
 #include "exfat.h"
 #include "Volume.h"
+#include "system_dependencies.h"
 
 
 //#define TRACE_EXFAT

src/add-ons/kernel/file_systems/exfat/Jamfile

@@ -1,8 +1,8 @@
 SubDir HAIKU_TOP src add-ons kernel file_systems exfat ;
-
+UsePrivateKernelHeaders ;
+UsePrivateHeaders kernel ;
 UsePrivateHeaders shared storage ;
 UsePrivateHeaders file_systems ;
-UsePrivateKernelHeaders ;
 
 KernelAddon exfat :
 	DataStream.cpp

src/add-ons/kernel/file_systems/exfat/Utility.cpp

@@ -12,14 +12,6 @@
 
 #include "Utility.h"
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <Errors.h>
-
-#include <util/convertutf.h>
-
 
 status_t
 get_volume_name(struct exfat_entry* entry, char* name, size_t length)

src/add-ons/kernel/file_systems/exfat/Utility.h

@@ -13,6 +13,7 @@
 
 
 #include "exfat.h"
+#include "system_dependencies.h"
 
 
 enum inode_type {

src/add-ons/kernel/file_systems/exfat/Volume.cpp

@@ -16,19 +16,6 @@
 
 
 #include "Volume.h"
-
-#include <errno.h>
-#include <unistd.h>
-#include <new>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <fs_cache.h>
-#include <fs_volume.h>
-
-#include <util/AutoLock.h>
-
 #include "CachedBlock.h"
 #include "DeviceOpener.h"
 #include "Inode.h"

src/add-ons/kernel/file_systems/exfat/Volume.h

@@ -14,13 +14,8 @@
 #define VOLUME_H
 
 
-#include <lock.h>
-#include <string.h>
-
-#include <StorageDefs.h>
-#include <util/SplayTree.h>
-
 #include "exfat.h"
+#include "system_dependencies.h"
 
 
 struct node_key {

src/add-ons/kernel/file_systems/exfat/exfat.h

@@ -12,11 +12,7 @@
 #define EXFAT_H
 
 
-#include <sys/stat.h>
-
-#include <ByteOrder.h>
-#include <fs_interface.h>
-#include <KernelExport.h>
+#include "system_dependencies.h"
 
 
 typedef uint64 fileblock_t;		// file block number

src/add-ons/kernel/file_systems/exfat/kernel_interface.cpp

@@ -12,27 +12,13 @@
  */
 
 
-#include <dirent.h>
-#include <unistd.h>
-#include <util/kernel_cpp.h>
-#include <string.h>
-
-#include <new>
-
-#include <AutoDeleter.h>
-#include <fs_cache.h>
-#include <fs_info.h>
-#include <io_requests.h>
-#include <NodeMonitor.h>
-#include <StorageDefs.h>
-#include <util/AutoLock.h>
-#include <file_systems/fs_ops_support.h>
-
 #include "DirectoryIterator.h"
 #include "exfat.h"
 #include "Inode.h"
 #include "Utility.h"
 
+#include <file_systems/fs_ops_support.h>
+
 
 //#define TRACE_EXFAT
 #ifdef TRACE_EXFAT
@@ -158,6 +144,7 @@ static status_t
 exfat_mount(fs_volume* _volume, const char* device, uint32 flags,
 	const char* args, ino_t* _rootID)
 {
+	TRACE("exfat_mount(): Trying to mount\n");
 	Volume* volume = new(std::nothrow) Volume(_volume);
 	if (volume == NULL)
 		return B_NO_MEMORY;
@@ -312,7 +299,7 @@ exfat_io(fs_volume* _volume, fs_vnode* _node, void* _cookie,
 	Volume* volume = (Volume*)_volume->private_volume;
 	Inode* inode = (Inode*)_node->private_node;
 
-#ifndef EXFAT_SHELL
+#ifndef FS_SHELL
 	if (io_request_is_write(request) && volume->IsReadOnly()) {
 		notify_io_request(request, B_READ_ONLY_DEVICE);
 		return B_READ_ONLY_DEVICE;
@@ -320,7 +307,7 @@ exfat_io(fs_volume* _volume, fs_vnode* _node, void* _cookie,
 #endif
 
 	if (inode->FileCache() == NULL) {
-#ifndef EXFAT_SHELL
+#ifndef FS_SHELL
 		notify_io_request(request, B_BAD_VALUE);
 #endif
 		return B_BAD_VALUE;

src/add-ons/kernel/file_systems/exfat/system_dependencies.h

@@ -0,0 +1,64 @@
+/*
+ * Copyright 2018, Your Name <your@email.address>
+ * All rights reserved. Distributed under the terms of the MIT license.
+ */
+#ifndef _SYSTEM_DEPENDENCIES_H
+#define _SYSTEM_DEPENDENCIES_H
+
+#ifdef FS_SHELL
+// This needs to be included before the fs_shell wrapper
+
+#include "fssh_api_wrapper.h"
+#include "fssh_auto_deleter.h"
+#include "fssh_convertutf.h"
+
+#include <util/SplayTree.h>
+
+#else // !FS_SHELL
+
+#include <AutoDeleter.h>
+#include <util/AutoLock.h>
+#include <util/convertutf.h>
+#include <util/DoublyLinkedList.h>
+#include <util/kernel_cpp.h>
+#include <util/SinglyLinkedList.h>
+#include <util/Stack.h>
+#include <util/SplayTree.h>
+
+
+#include <ByteOrder.h>
+//#include <uuid.h>
+
+#include <dirent.h>
+#include <driver_settings.h>
+#include "Debug.h"
+#include <Drivers.h>
+#include <errno.h>
+#include <Errors.h>
+#include <fs_attr.h>
+#include <fs_cache.h>
+#include <fs_index.h>
+#include <fs_info.h>
+#include <fs_interface.h>
+#include <fs_query.h>
+#include <fs_volume.h>
+#include <io_requests.h>
+#include <kernel.h>
+#include <KernelExport.h>
+#include <lock.h>
+#include <new>
+#include <NodeMonitor.h>
+#include <real_time_clock.h>
+#include <SupportDefs.h>
+#include <StorageDefs.h>
+#include <sys/stat.h>
+#include <tracing.h>
+#include <TypeConstants.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#endif // !FS_SHELL
+
+#endif // _SYSTEM_DEPENDENCIES

src/tests/add-ons/kernel/file_systems/Jamfile

@@ -3,6 +3,7 @@ SubDir HAIKU_TOP src tests add-ons kernel file_systems ;
 HaikuSubInclude bfs ;
 HaikuSubInclude btrfs ;
 HaikuSubInclude cdda ;
+HaikuSubInclude exfat ;
 HaikuSubInclude iso9660 ;
 HaikuSubInclude shared ;
 HaikuSubInclude udf ;

src/tests/add-ons/kernel/file_systems/exfat/Jamfile

@@ -0,0 +1,3 @@
+SubDir HAIKU_TOP src tests add-ons kernel file_systems exfat ;
+
+SubInclude HAIKU_TOP src tests add-ons kernel file_systems exfat exfat_shell ;

src/tests/add-ons/kernel/file_systems/exfat/exfat_shell/Jamfile

@@ -0,0 +1,78 @@
+SubDir HAIKU_TOP src tests add-ons kernel file_systems exfat exfat_shell ;
+
+SEARCH_SOURCE += [ FDirName $(HAIKU_TOP) src add-ons kernel file_systems exfat ] ;
+
+# prevent inclusion of HaikuBuildCompatibility.h and _BSD_SOURCE headers
+DEFINES += HAIKU_BUILD_COMPATIBILITY_H __STRICT_ANSI__ ; 
+
+# set some additional defines
+{
+	local defines =
+		FS_SHELL
+		;
+
+	defines = [ FDefines $(defines) ] ;
+
+	local c++flags = ;
+
+	SubDirCcFlags $(defines) -Wno-multichar ;
+	SubDirC++Flags $(defines) $(c++flags) -Wno-multichar -fno-rtti ;
+}
+
+# platform specific libraries
+local fsShellCommandLibs ;
+if ! $(HOST_PLATFORM_HAIKU_COMPATIBLE) {
+	fsShellCommandLibs = $(HOST_NETWORK_LIBS) ;
+}
+
+UseHeaders [ FDirName $(HAIKU_TOP) headers build ] : true ;
+UseHeaders [ FDirName $(HAIKU_TOP) headers os storage ] : true ;
+
+if ! $(HOST_PLATFORM_HAIKU_COMPATIBLE) {
+	UseHeaders [ FDirName $(HAIKU_TOP) headers build os ] : true ;
+	UseHeaders [ FDirName $(HAIKU_TOP) headers build os support ] : true ;
+}
+
+UsePrivateKernelHeaders ;
+UsePrivateHeaders shared storage fs_shell ;
+UsePrivateHeaders file_systems ;
+UseHeaders [ FDirName $(HAIKU_TOP) headers private ] : true ;
+UseHeaders [ FDirName $(HAIKU_TOP) src tools fs_shell ] ;
+UseHeaders [ FDirName $(HAIKU_TOP) src add-ons kernel file_systems shared ] : true ;
+
+local exfatSource =
+	DataStream.cpp
+	DeviceOpener.cpp
+	DirectoryIterator.cpp
+	kernel_interface.cpp
+	Inode.cpp
+	Volume.cpp
+	Utility.cpp
+	
+;
+
+BuildPlatformMergeObject <build>exfat_shell.o : $(exfatSource) ;
+
+BuildPlatformMain <build>exfat_shell
+	:
+	:
+	<build>exfat_shell.o
+	<build>fs_shell.a $(HOST_LIBSUPC++) $(HOST_LIBSTDC++)
+	$(HOST_LIBROOT) $(fsShellCommandLibs)
+;
+
+BuildPlatformMain <build>exfat_fuse
+	:
+	:
+	<build>exfat_shell.o
+	<build>fuse_module.a
+	$(HOST_LIBSUPC++) $(HOST_LIBSTDC++)
+	$(HOST_STATIC_LIBROOT) $(fsShellCommandLibs) fuse
+;
+
+SEARCH on [ FGristFiles $(utilitySources) ]
+	+= [ FDirName $(HAIKU_TOP) src system kernel util ] ;
+SEARCH on [ FGristFiles QueryParserUtils.cpp ]
+	+= [ FDirName $(HAIKU_TOP) src add-ons kernel file_systems shared ] ;
+SEARCH on [ FGristFiles DeviceOpener.cpp ]
+	+= [ FDirName $(HAIKU_TOP) src add-ons kernel file_systems shared ] ;

src/tools/fs_shell/Jamfile

@@ -35,6 +35,7 @@ local kernelEmulationSources =
 	block_cache.cpp
 	byte_order.cpp
 	command_cp.cpp
+	convertutf.cpp
 	disk_device_manager.cpp
 	driver_settings.cpp
 	errno.cpp

src/tools/fs_shell/convertutf.cpp

@@ -0,0 +1,130 @@
+/*
+ * Copyright 2014 Jonathan Schleifer <js@webkeks.org>
+ * Copyright 2014 Haiku, Inc. All rights reserved.
+ *
+ * Distributed under the terms of the MIT License.
+ *
+ * Authors:
+ *		Jonathan Schleifer, js@webkeks.org
+ *		John Scipione, jscipione@gmail.com
+ */
+
+
+#include "fssh_convertutf.h"
+
+
+static inline size_t
+glyph_length(uint32 glyph)
+{
+	if (glyph < 0x80)
+		return 1;
+	else if (glyph < 0x800)
+		return 2;
+	else if (glyph < 0x10000)
+		return 3;
+	else if (glyph < 0x110000)
+		return 4;
+
+	return 0;
+}
+
+
+static void
+encode_glyph(uint32 glyph, size_t glyphLength, char* buffer)
+{
+	if (glyphLength == 1) {
+		*buffer = glyph;
+	} else if (glyphLength == 2) {
+		*buffer++ = 0xC0 | (glyph >> 6);
+		*buffer = 0x80 | (glyph & 0x3F);
+	} else if (glyphLength == 3) {
+		*buffer++ = 0xE0 | (glyph >> 12);
+		*buffer++ = 0x80 | (glyph >> 6 & 0x3F);
+		*buffer = 0x80 | (glyph & 0x3F);
+	} else if (glyphLength == 4) {
+		*buffer++ = 0xF0 | (glyph >> 18);
+		*buffer++ = 0x80 | (glyph >> 12 & 0x3F);
+		*buffer++ = 0x80 | (glyph >> 6 & 0x3F);
+		*buffer = 0x80 | (glyph & 0x3F);
+	}
+}
+
+
+static ssize_t
+utf16_to_utf8(const uint16* source, size_t sourceCodeUnitCount, char* target,
+	size_t targetLength, bool isLittleEndian)
+{
+	if (source == NULL || sourceCodeUnitCount == 0
+		|| target == NULL || targetLength == 0) {
+		return B_BAD_VALUE;
+	}
+
+	ssize_t outLength = 0;
+
+	for (size_t i = 0; i < sourceCodeUnitCount; i++) {
+		uint32 glyph = isLittleEndian
+			? B_LENDIAN_TO_HOST_INT32(source[i])
+			: B_BENDIAN_TO_HOST_INT32(source[i]);
+
+		if ((glyph & 0xFC00) == 0xDC00) {
+			// missing high surrogate
+			return B_BAD_VALUE;
+		}
+
+		if ((glyph & 0xFC00) == 0xD800) {
+			if (sourceCodeUnitCount <= i + 1) {
+				// high surrogate at end of string
+				return B_BAD_VALUE;
+			}
+
+			uint32 low = isLittleEndian
+				? B_LENDIAN_TO_HOST_INT32(source[i + 1])
+				: B_BENDIAN_TO_HOST_INT32(source[i + 1]);
+			if ((low & 0xFC00) != 0xDC00) {
+				// missing low surrogate
+				return B_BAD_VALUE;
+			}
+
+			glyph = (((glyph & 0x3FF) << 10) | (low & 0x3FF)) + 0x10000;
+			i++;
+		}
+
+		size_t glyphLength = glyph_length(glyph);
+		if (glyphLength == 0)
+			return B_BAD_VALUE;
+		else if (outLength + glyphLength >= targetLength
+			|| outLength + glyphLength >= B_FILE_NAME_LENGTH) {
+			// NUL terminate the string so the caller can use the
+			// abbreviated version in this case. Since the length
+			// isn't returned the caller will need to call strlen()
+			// to get the length of the string.
+			target[outLength] = '\0';
+			return B_NAME_TOO_LONG;
+		}
+
+		encode_glyph(glyph, glyphLength, target + outLength);
+		outLength += glyphLength;
+	}
+
+	target[outLength] = '\0';
+
+	return outLength;
+}
+
+
+ssize_t
+utf16le_to_utf8(const uint16* source, size_t sourceCodeUnitCount,
+	char* target, size_t targetLength)
+{
+	return utf16_to_utf8(source, sourceCodeUnitCount, target, targetLength,
+		true);
+}
+
+
+ssize_t
+utf16be_to_utf8(const uint16* source, size_t sourceCodeUnitCount,
+	char* target, size_t targetLength)
+{
+	return utf16_to_utf8(source, sourceCodeUnitCount, target, targetLength,
+		false);
+}

src/tools/fs_shell/module.cpp

@@ -191,14 +191,12 @@ init_module(module *module)
 			module->state = MODULE_INIT;
 
 			// init module
-
 			TRACE(("initializing module %s (at %p)... \n", module->name, module->info->std_ops));
 			if (module->info->std_ops != NULL)
 				status = module->info->std_ops(FSSH_B_MODULE_INIT);
 			else
 				status = FSSH_B_OK;
 			TRACE(("...done (%s)\n", strerror(status)));
-
 			if (status >= FSSH_B_OK)
 				module->state = MODULE_READY;
 			else {