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diff --git a/codelite/xmount.project b/codelite/xmount.project
index d2f0f42..584d48e 100644
--- a/codelite/xmount.project
+++ b/codelite/xmount.project
@@ -1,249 +1,251 @@
<?xml version="1.0" encoding="UTF-8"?>
<CodeLite_Project Name="xmount" InternalType="Console">
<Description/>
<Dependencies/>
<VirtualDirectory Name="src">
<File Name="../src/CMakeLists.txt"/>
<File Name="../src/macros.h"/>
<File Name="../src/md5.c"/>
<File Name="../src/md5.h"/>
<File Name="../src/xmount.c"/>
<File Name="../src/xmount.h"/>
+ <File Name="../src/xmount_fuse.c"/>
+ <File Name="../src/xmount_fuse.h"/>
</VirtualDirectory>
<VirtualDirectory Name="libxmount">
<File Name="../libxmount/endianness.h"/>
<File Name="../libxmount/libxmount.c"/>
<File Name="../libxmount/libxmount.h"/>
</VirtualDirectory>
<VirtualDirectory Name="libxmount_input">
<File Name="../libxmount_input/CMakeLists.txt"/>
<File Name="../libxmount_input/libxmount_input.h"/>
<VirtualDirectory Name="libxmount_input_aaff">
<File Name="../libxmount_input/libxmount_input_aaff/CMakeLists.txt"/>
<File Name="../libxmount_input/libxmount_input_aaff/libxmount_input_aaff.c"/>
<File Name="../libxmount_input/libxmount_input_aaff/libxmount_input_aaff.h"/>
</VirtualDirectory>
<VirtualDirectory Name="libxmount_input_aewf">
<File Name="../libxmount_input/libxmount_input_aewf/CMakeLists.txt"/>
<File Name="../libxmount_input/libxmount_input_aewf/libxmount_input_aewf.c"/>
<File Name="../libxmount_input/libxmount_input_aewf/libxmount_input_aewf.h"/>
</VirtualDirectory>
<VirtualDirectory Name="libxmount_input_aff">
<File Name="../libxmount_input/libxmount_input_aff/CMakeLists.txt"/>
<File Name="../libxmount_input/libxmount_input_aff/libxmount_input_aff.c"/>
<File Name="../libxmount_input/libxmount_input_aff/libxmount_input_aff.h"/>
</VirtualDirectory>
<VirtualDirectory Name="libxmount_input_ewf">
<File Name="../libxmount_input/libxmount_input_ewf/CMakeLists.txt"/>
<File Name="../libxmount_input/libxmount_input_ewf/libxmount_input_ewf.c"/>
<File Name="../libxmount_input/libxmount_input_ewf/libxmount_input_ewf.h"/>
</VirtualDirectory>
<VirtualDirectory Name="libxmount_input_raw">
<File Name="../libxmount_input/libxmount_input_raw/CMakeLists.txt"/>
<File Name="../libxmount_input/libxmount_input_raw/libxmount_input_raw.c"/>
<File Name="../libxmount_input/libxmount_input_raw/libxmount_input_raw.h"/>
</VirtualDirectory>
</VirtualDirectory>
<VirtualDirectory Name="libxmount_morphing">
<VirtualDirectory Name="libxmount_morphing_combine">
<File Name="../libxmount_morphing/libxmount_morphing_combine/CMakeLists.txt"/>
<File Name="../libxmount_morphing/libxmount_morphing_combine/libxmount_morphing_combine.c"/>
<File Name="../libxmount_morphing/libxmount_morphing_combine/libxmount_morphing_combine.h"/>
</VirtualDirectory>
<VirtualDirectory Name="libxmount_morphing_raid">
<File Name="../libxmount_morphing/libxmount_morphing_raid/CMakeLists.txt"/>
<File Name="../libxmount_morphing/libxmount_morphing_raid/libxmount_morphing_raid.c"/>
<File Name="../libxmount_morphing/libxmount_morphing_raid/libxmount_morphing_raid.h"/>
</VirtualDirectory>
<VirtualDirectory Name="libxmount_morphing_unallocated">
<File Name="../libxmount_morphing/libxmount_morphing_unallocated/CMakeLists.txt"/>
<File Name="../libxmount_morphing/libxmount_morphing_unallocated/fat_functions.c"/>
<File Name="../libxmount_morphing/libxmount_morphing_unallocated/fat_functions.h"/>
<File Name="../libxmount_morphing/libxmount_morphing_unallocated/hfs_functions.c"/>
<File Name="../libxmount_morphing/libxmount_morphing_unallocated/hfs_functions.h"/>
<File Name="../libxmount_morphing/libxmount_morphing_unallocated/libxmount_morphing_unallocated.c"/>
<File Name="../libxmount_morphing/libxmount_morphing_unallocated/libxmount_morphing_unallocated.h"/>
<File Name="../libxmount_morphing/libxmount_morphing_unallocated/libxmount_morphing_unallocated_retvalues.h"/>
<File Name="../libxmount_morphing/libxmount_morphing_unallocated/ntfs_functions.c"/>
<File Name="../libxmount_morphing/libxmount_morphing_unallocated/ntfs_functions.h"/>
</VirtualDirectory>
<File Name="../libxmount_morphing/CMakeLists.txt"/>
<File Name="../libxmount_morphing/libxmount_morphing.h"/>
</VirtualDirectory>
<Settings Type="Executable">
<GlobalSettings>
<Compiler Options="" C_Options="" Assembler="">
<IncludePath Value="."/>
</Compiler>
<Linker Options="">
<LibraryPath Value="."/>
</Linker>
<ResourceCompiler Options=""/>
</GlobalSettings>
<Configuration Name="Debug_Linux" CompilerType="gnu gcc" DebuggerType="GNU gdb debugger" Type="Executable" BuildCmpWithGlobalSettings="append" BuildLnkWithGlobalSettings="append" BuildResWithGlobalSettings="append">
<Compiler Options="-g;-O0;-Wall" C_Options="-g;-O0;-Wall" Assembler="" Required="yes" PreCompiledHeader="" PCHInCommandLine="no" PCHFlags="" PCHFlagsPolicy="0">
<IncludePath Value="."/>
</Compiler>
<Linker Options="" Required="yes"/>
<ResourceCompiler Options="" Required="no"/>
<General OutputFile="$(IntermediateDirectory)/$(ProjectName)" IntermediateDirectory="./Debug" Command="./build-debug/HelloWorld" CommandArguments="" UseSeparateDebugArgs="no" DebugArguments="" WorkingDirectory="" PauseExecWhenProcTerminates="yes" IsGUIProgram="no" IsEnabled="yes"/>
<Environment EnvVarSetName="&lt;Use Defaults&gt;" DbgSetName="&lt;Use Defaults&gt;">
<![CDATA[]]>
</Environment>
<Debugger IsRemote="no" RemoteHostName="" RemoteHostPort="" DebuggerPath="" IsExtended="no">
<DebuggerSearchPaths/>
<PostConnectCommands/>
<StartupCommands/>
</Debugger>
<PreBuild/>
<PostBuild/>
<CustomBuild Enabled="yes">
<Target Name="cmake">cmake ../.. -DCMAKE_BUILD_TYPE=Debug -DCMAKE_EXPORT_COMPILE_COMMANDS=1</Target>
<RebuildCommand>make clean &amp;&amp; make -j4</RebuildCommand>
<CleanCommand>make clean</CleanCommand>
<BuildCommand>make -j4</BuildCommand>
<PreprocessFileCommand/>
<SingleFileCommand/>
<MakefileGenerationCommand/>
<ThirdPartyToolName>None</ThirdPartyToolName>
<WorkingDirectory>$(WorkspacePath)/build-debug</WorkingDirectory>
</CustomBuild>
<AdditionalRules>
<CustomPostBuild/>
<CustomPreBuild/>
</AdditionalRules>
<Completion EnableCpp11="no" EnableCpp14="no">
<ClangCmpFlagsC/>
<ClangCmpFlags/>
<ClangPP/>
<SearchPaths/>
</Completion>
</Configuration>
<Configuration Name="Debug_Windows" CompilerType="gnu gcc" DebuggerType="GNU gdb debugger" Type="Executable" BuildCmpWithGlobalSettings="append" BuildLnkWithGlobalSettings="append" BuildResWithGlobalSettings="append">
<Compiler Options="-g;-O0;-Wall" C_Options="-g;-O0;-Wall" Assembler="" Required="yes" PreCompiledHeader="" PCHInCommandLine="no" PCHFlags="" PCHFlagsPolicy="0">
<IncludePath Value="."/>
</Compiler>
<Linker Options="" Required="yes"/>
<ResourceCompiler Options="" Required="no"/>
<General OutputFile="$(IntermediateDirectory)/$(ProjectName)" IntermediateDirectory="./Debug" Command="./build-debug/HelloWorld" CommandArguments="" UseSeparateDebugArgs="no" DebugArguments="" WorkingDirectory="" PauseExecWhenProcTerminates="yes" IsGUIProgram="no" IsEnabled="yes"/>
<Environment EnvVarSetName="&lt;Use Defaults&gt;" DbgSetName="&lt;Use Defaults&gt;">
<![CDATA[]]>
</Environment>
<Debugger IsRemote="no" RemoteHostName="" RemoteHostPort="" DebuggerPath="" IsExtended="no">
<DebuggerSearchPaths/>
<PostConnectCommands/>
<StartupCommands/>
</Debugger>
<PreBuild/>
<PostBuild/>
<CustomBuild Enabled="yes">
<Target Name="cmake">cmake .. -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Debug -DCMAKE_EXPORT_COMPILE_COMMANDS=1</Target>
<RebuildCommand>mingw32-make clean &amp;&amp; mingw32-make -j4</RebuildCommand>
<CleanCommand>mingw32-make clean</CleanCommand>
<BuildCommand>mingw32-make -j4</BuildCommand>
<PreprocessFileCommand/>
<SingleFileCommand/>
<MakefileGenerationCommand/>
<ThirdPartyToolName>None</ThirdPartyToolName>
<WorkingDirectory>$(WorkspacePath)/build-debug</WorkingDirectory>
</CustomBuild>
<AdditionalRules>
<CustomPostBuild/>
<CustomPreBuild/>
</AdditionalRules>
<Completion EnableCpp11="no" EnableCpp14="no">
<ClangCmpFlagsC/>
<ClangCmpFlags/>
<ClangPP/>
<SearchPaths/>
</Completion>
</Configuration>
<Configuration Name="Release_Linux" CompilerType="gnu gcc" DebuggerType="GNU gdb debugger" Type="Executable" BuildCmpWithGlobalSettings="append" BuildLnkWithGlobalSettings="append" BuildResWithGlobalSettings="append">
<Compiler Options="-g;-O0;-Wall" C_Options="-g;-O0;-Wall" Assembler="" Required="yes" PreCompiledHeader="" PCHInCommandLine="no" PCHFlags="" PCHFlagsPolicy="0">
<IncludePath Value="."/>
</Compiler>
<Linker Options="" Required="yes"/>
<ResourceCompiler Options="" Required="no"/>
<General OutputFile="$(IntermediateDirectory)/$(ProjectName)" IntermediateDirectory="./Release" Command="./build-release/HelloWorld" CommandArguments="" UseSeparateDebugArgs="no" DebugArguments="" WorkingDirectory="" PauseExecWhenProcTerminates="yes" IsGUIProgram="no" IsEnabled="yes"/>
<Environment EnvVarSetName="&lt;Use Defaults&gt;" DbgSetName="&lt;Use Defaults&gt;">
<![CDATA[]]>
</Environment>
<Debugger IsRemote="no" RemoteHostName="" RemoteHostPort="" DebuggerPath="" IsExtended="no">
<DebuggerSearchPaths/>
<PostConnectCommands/>
<StartupCommands/>
</Debugger>
<PreBuild/>
<PostBuild/>
<CustomBuild Enabled="yes">
<Target Name="cmake">cmake ../.. -DCMAKE_EXPORT_COMPILE_COMMANDS=1</Target>
<RebuildCommand>make clean &amp;&amp; make -j4</RebuildCommand>
<CleanCommand>make clean</CleanCommand>
<BuildCommand>make -j4</BuildCommand>
<PreprocessFileCommand/>
<SingleFileCommand/>
<MakefileGenerationCommand/>
<ThirdPartyToolName>None</ThirdPartyToolName>
<WorkingDirectory>$(WorkspacePath)/build-release</WorkingDirectory>
</CustomBuild>
<AdditionalRules>
<CustomPostBuild/>
<CustomPreBuild/>
</AdditionalRules>
<Completion EnableCpp11="no" EnableCpp14="no">
<ClangCmpFlagsC/>
<ClangCmpFlags/>
<ClangPP/>
<SearchPaths/>
</Completion>
</Configuration>
<Configuration Name="Release_Windows" CompilerType="gnu gcc" DebuggerType="GNU gdb debugger" Type="Executable" BuildCmpWithGlobalSettings="append" BuildLnkWithGlobalSettings="append" BuildResWithGlobalSettings="append">
<Compiler Options="-g;-O0;-Wall" C_Options="-g;-O0;-Wall" Assembler="" Required="yes" PreCompiledHeader="" PCHInCommandLine="no" PCHFlags="" PCHFlagsPolicy="0">
<IncludePath Value="."/>
</Compiler>
<Linker Options="" Required="yes"/>
<ResourceCompiler Options="" Required="no"/>
<General OutputFile="$(IntermediateDirectory)/$(ProjectName)" IntermediateDirectory="./Release" Command="./build-release/HelloWorld" CommandArguments="" UseSeparateDebugArgs="no" DebugArguments="" WorkingDirectory="" PauseExecWhenProcTerminates="yes" IsGUIProgram="no" IsEnabled="yes"/>
<Environment EnvVarSetName="&lt;Use Defaults&gt;" DbgSetName="&lt;Use Defaults&gt;">
<![CDATA[]]>
</Environment>
<Debugger IsRemote="no" RemoteHostName="" RemoteHostPort="" DebuggerPath="" IsExtended="no">
<DebuggerSearchPaths/>
<PostConnectCommands/>
<StartupCommands/>
</Debugger>
<PreBuild/>
<PostBuild/>
<CustomBuild Enabled="yes">
<Target Name="cmake">cmake .. -G "MinGW Makefiles" -DCMAKE_EXPORT_COMPILE_COMMANDS=1</Target>
<RebuildCommand>mingw32-make clean &amp;&amp; mingw32-make -j4</RebuildCommand>
<CleanCommand>mingw32-make clean</CleanCommand>
<BuildCommand>mingw32-make -j4</BuildCommand>
<PreprocessFileCommand/>
<SingleFileCommand/>
<MakefileGenerationCommand/>
<ThirdPartyToolName>None</ThirdPartyToolName>
<WorkingDirectory>$(WorkspacePath)/build-release</WorkingDirectory>
</CustomBuild>
<AdditionalRules>
<CustomPostBuild/>
<CustomPreBuild/>
</AdditionalRules>
<Completion EnableCpp11="no" EnableCpp14="no">
<ClangCmpFlagsC/>
<ClangCmpFlags/>
<ClangPP/>
<SearchPaths/>
</Completion>
</Configuration>
</Settings>
<VirtualDirectory Name="libxmount_output">
<File Name="../libxmount_output/CMakeLists.txt"/>
<File Name="../libxmount_output/libxmount_output.h"/>
<VirtualDirectory Name="libxmount_output_raw">
<File Name="../libxmount_output/libxmount_output_raw/CMakeLists.txt"/>
<File Name="../libxmount_output/libxmount_output_raw/libxmount_output_raw.c"/>
<File Name="../libxmount_output/libxmount_output_raw/libxmount_output_raw.h"/>
</VirtualDirectory>
</VirtualDirectory>
</CodeLite_Project>
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 3b3b7f6..a1445d1 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,22 +1,22 @@
if(NOT APPLE)
include_directories(${LIBFUSE_INCLUDE_DIRS})
set(LIBS ${LIBS} ${LIBFUSE_LIBRARIES})
else(NOT APPLE)
include_directories(${LIBOSXFUSE_INCLUDE_DIRS})
set(LIBS ${LIBS} ${LIBOSXFUSE_LIBRARIES})
link_directories(${LIBOSXFUSE_LIBRARY_DIRS})
endif(NOT APPLE)
set(LIBS ${LIBS} ${libgidafs_LIBRARIES})
include_directories(${libgidafs_INCLUDE_DIRS})
set(LIBS ${LIBS} "dl")
add_definitions(-DXMOUNT_LIBRARY_PATH="${CMAKE_INSTALL_PREFIX}/lib/xmount")
-add_executable(xmount xmount.c md5.c ../libxmount/libxmount.c)
+add_executable(xmount xmount.c xmount_fuse.c md5.c ../libxmount/libxmount.c)
target_link_libraries(xmount ${LIBS})
install(TARGETS xmount DESTINATION bin)
diff --git a/src/xmount.c b/src/xmount.c
index 933cf9d..a60b4e1 100755
--- a/src/xmount.c
+++ b/src/xmount.c
@@ -1,3547 +1,2930 @@
/*******************************************************************************
* xmount Copyright (c) 2008-2016 by Gillen Daniel <gillen.dan@pinguin.lu> *
* *
* xmount is a small tool to "fuse mount" various harddisk image formats as dd, *
* vdi, vhd or vmdk files and enable virtual write access to them. *
* *
* This program is free software: you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the Free *
* Software Foundation, either version 3 of the License, or (at your option) *
* any later version. *
* *
* This program is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for *
* more details. *
* *
* You should have received a copy of the GNU General Public License along with *
* this program. If not, see <http://www.gnu.org/licenses/>. *
*******************************************************************************/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <inttypes.h> // For PRI*
#include <errno.h>
#include <dlfcn.h> // For dlopen, dlclose, dlsym
#include <dirent.h> // For opendir, readdir, closedir
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/stat.h> // For fstat
#include <sys/types.h>
#ifdef HAVE_LINUX_FS_H
#include <linux/fs.h> // For SEEK_* ??
#endif
#if !defined(__APPLE__) && defined(HAVE_GRP_H) && defined(HAVE_PWD_H)
#include <grp.h> // For getgrnam, struct group
#include <pwd.h> // For getpwuid, struct passwd
#endif
#include <pthread.h>
#include <time.h> // For time
-#define FUSE_USE_VERSION 26
-#include <fuse.h>
-
-#include <gidafs.h>
-
#include "xmount.h"
+#include "xmount_fuse.h"
#include "md5.h"
#include "macros.h"
#include "../libxmount/libxmount.h"
#define XMOUNT_COPYRIGHT_NOTICE \
"xmount v%s Copyright (c) 2008-2016 by Gillen Daniel <gillen.dan@pinguin.lu>"
#define LOG_WARNING(...) { \
LIBXMOUNT_LOG_WARNING(__VA_ARGS__); \
}
#define LOG_ERROR(...) { \
LIBXMOUNT_LOG_ERROR(__VA_ARGS__); \
}
#define LOG_DEBUG(...) { \
LIBXMOUNT_LOG_DEBUG(glob_xmount.debug,__VA_ARGS__); \
}
-/*******************************************************************************
- * Global vars
- ******************************************************************************/
-//! Struct that contains various runtime configuration options
-static ts_XmountData glob_xmount;
/*******************************************************************************
* Forward declarations
******************************************************************************/
/*
* Misc
*/
static void InitResources();
static void FreeResources();
static void PrintUsage(char*);
static void CheckFuseSettings();
static int ParseCmdLine(const int, char**);
static int ExtractOutputFileNames(char*);
static int CalculateInputImageHash(uint64_t*, uint64_t*);
/*
* Input
*/
static int ReadInputImageData(pts_InputImage, char*, off_t, size_t, size_t*);
/*
* Morphing
*/
static int GetMorphedImageSize(uint64_t*);
static int ReadMorphedImageData(char*, off_t, size_t, size_t*);
static int WriteMorphedImageData(const char*, off_t, size_t, size_t*);
/*
* Cache
*/
static int InitCacheFile();
static int UpdateBlockCacheIndex(uint64_t, t_CacheFileBlockIndex);
-/*
- * Output
- */
-static int GetOutputImageSize(uint64_t*);
-static int ReadOutputImageData(char*, off_t, size_t);
-static int WriteOutputImageData(const char*, off_t, size_t);
+
/*
* Info file
*/
static int InitInfoFile();
/*
* Lib related
*/
static int LoadLibs();
static int FindInputLib(pts_InputImage);
static int FindMorphingLib();
static int FindOutputLib();
static int SplitLibraryParameters(char*, uint32_t*, pts_LibXmountOptions**);
/*
* Functions exported to LibXmount_Morphing
*/
static int LibXmount_Morphing_ImageCount(uint64_t*);
static int LibXmount_Morphing_Size(uint64_t, uint64_t*);
static int LibXmount_Morphing_Read(uint64_t, char*, off_t, size_t, size_t*);
/*
* Functions exported to LibXmount_Output
*/
static int LibXmount_Output_Size(uint64_t*);
static int LibXmount_Output_Read(char*, off_t, size_t, size_t*);
static int LibXmount_Output_Write(char*, off_t, size_t, size_t*);
-/*
- * Functions implementing FUSE functions
- */
-static int FuseGetAttr(const char*, struct stat*);
-static int FuseMkDir(const char*, mode_t);
-static int FuseMkNod(const char*, mode_t, dev_t);
-static int FuseReadDir(const char*,
- void*,
- fuse_fill_dir_t,
- off_t,
- struct fuse_file_info*);
-static int FuseOpen(const char*, struct fuse_file_info*);
-static int FuseRead(const char*, char*, size_t, off_t, struct fuse_file_info*);
-static int FuseRename(const char*, const char*);
-static int FuseRmDir(const char*);
-static int FuseUnlink(const char*);
-//static int FuseStatFs(const char*, struct statvfs*);
-static int FuseWrite(const char *p_path,
- const char*,
- size_t,
- off_t,
- struct fuse_file_info*);
/*******************************************************************************
* Helper functions
******************************************************************************/
//! Print usage instructions (cmdline options etc..)
/*!
* \param p_prog_name Program name (argv[0])
*/
static void PrintUsage(char *p_prog_name) {
char *p_buf;
int first;
int ret;
printf("\n" XMOUNT_COPYRIGHT_NOTICE "\n",XMOUNT_VERSION);
printf("\nUsage:\n");
printf(" %s [fopts] <xopts> <mntp>\n\n",p_prog_name);
printf("Options:\n");
printf(" fopts:\n");
printf(" -d : Enable FUSE's and xmount's debug mode.\n");
printf(" -h : Display this help message.\n");
printf(" -s : Run single threaded.\n");
printf(" -o no_allow_other : Disable automatic addition of FUSE's "
"allow_other option.\n");
printf(" -o <fopts> : Specify fuse mount options. Will also disable "
"automatic addition of FUSE's allow_other option!\n");
printf("\n");
printf(" xopts:\n");
printf(" --cache <cfile> : Enable virtual write support.\n");
printf(" <cfile> specifies the cache file to use.\n");
printf(" --in <itype> <ifile> : Input image format and source file(s). "
"May be specified multiple times.\n");
printf(" <itype> can be ");
// List supported input formats
first=1;
for(uint32_t i=0;i<glob_xmount.input.libs_count;i++) {
p_buf=glob_xmount.input.pp_libs[i]->p_supported_input_types;
while(*p_buf!='\0') {
if(first==1) {
printf("\"%s\"",p_buf);
first=0;
} else printf(", \"%s\"",p_buf);
p_buf+=(strlen(p_buf)+1);
}
}
printf(".\n");
printf(" <ifile> specifies the source file. If your image is split into "
"multiple files, you have to specify them all!\n");
printf(" --inopts <iopts> : Specify input library specific options.\n");
printf(" <iopts> specifies a comma separated list of key=value options. "
"See below for details.\n");
printf(" --info : Print out infos about used compiler and libraries.\n");
printf(" --morph <mtype> : Morphing function to apply to input image(s). "
"If not specified, defaults to \"combine\".\n");
printf(" <mtype> can be ");
// List supported morphing functions
first=1;
for(uint32_t i=0;i<glob_xmount.morphing.libs_count;i++) {
p_buf=glob_xmount.morphing.pp_libs[i]->p_supported_morphing_types;
while(*p_buf!='\0') {
if(first==1) {
printf("\"%s\"",p_buf);
first=0;
} else printf(", \"%s\"",p_buf);
p_buf+=(strlen(p_buf)+1);
}
}
printf(".\n");
printf(" --morphopts <mopts> : Specify morphing library specific "
"options.\n");
printf(" <mopts> specifies a comma separated list of key=value options. "
"See below for details.\n");
printf(" --offset <off> : Move the output image data start <off> bytes "
"into the input image(s).\n");
printf(" --out <otype> : Output image format. If not specified, "
"defaults to ");
#ifdef __APPLE__
printf("\"dmg\".\n");
#else
printf("\"raw\".\n");
#endif
printf(" <otype> can be ");
// List supported output formats
first=1;
for(uint32_t i=0;i<glob_xmount.output.libs_count;i++) {
p_buf=glob_xmount.output.pp_libs[i]->p_supported_output_formats;
while(*p_buf!='\0') {
if(first==1) {
printf("\"%s\"",p_buf);
first=0;
} else printf(", \"%s\"",p_buf);
p_buf+=(strlen(p_buf)+1);
}
}
printf(".\n");
printf(" --outopts <oopts> : Specify output library specific "
"options.\n");
printf(" --owcache <file> : Same as --cache <file> but overwrites "
"existing cache file.\n");
printf(" --sizelimit <size> : The data end of input image(s) is set to no "
"more than <size> bytes after the data start.\n");
printf(" --version : Same as --info.\n");
printf("\n");
printf(" mntp:\n");
printf(" Mount point where output image should be located.\n");
printf("\n");
printf("Infos:\n");
printf(" * One --in option and a mount point are mandatory!\n");
printf(" * If you specify --in multiple times, data from all images is "
"morphed into one output image using the specified morphing "
"function.\n");
printf(" * For VMDK emulation, you have to uncomment \"user_allow_other\" "
"in /etc/fuse.conf or run xmount as root.\n");
printf("\n");
printf("Input / Morphing library specific options:\n");
printf(" Input / Morphing libraries might support an own set of "
"options to configure / tune their behaviour.\n");
printf(" Libraries supporting this feature (if any) and their "
"options are listed below.\n");
printf("\n");
// List input, morphing and output lib options
for(uint32_t i=0;i<glob_xmount.input.libs_count;i++) {
ret=glob_xmount.input.pp_libs[i]->
lib_functions.OptionsHelp((const char**)&p_buf);
if(ret!=0) {
LOG_ERROR("Unable to get options help for library '%s': %s!\n",
glob_xmount.input.pp_libs[i]->p_name,
glob_xmount.input.pp_libs[i]->
lib_functions.GetErrorMessage(ret));
}
if(p_buf==NULL) continue;
printf(" - %s\n",glob_xmount.input.pp_libs[i]->p_name);
printf("%s",p_buf);
printf("\n");
ret=glob_xmount.input.pp_libs[i]->lib_functions.FreeBuffer(p_buf);
if(ret!=0) {
LOG_ERROR("Unable to free options help text from library '%s': %s!\n",
glob_xmount.input.pp_libs[i]->p_name,
glob_xmount.input.pp_libs[i]->
lib_functions.GetErrorMessage(ret));
}
}
for(uint32_t i=0;i<glob_xmount.morphing.libs_count;i++) {
ret=glob_xmount.morphing.pp_libs[i]->
lib_functions.OptionsHelp((const char**)&p_buf);
if(ret!=0) {
LOG_ERROR("Unable to get options help for library '%s': %s!\n",
glob_xmount.morphing.pp_libs[i]->p_name,
glob_xmount.morphing.pp_libs[i]->
lib_functions.GetErrorMessage(ret));
}
if(p_buf==NULL) continue;
printf(" - %s\n",glob_xmount.morphing.pp_libs[i]->p_name);
printf("%s",p_buf);
printf("\n");
}
for(uint32_t i=0;i<glob_xmount.output.libs_count;i++) {
ret=glob_xmount.output.pp_libs[i]->
lib_functions.OptionsHelp((const char**)&p_buf);
if(ret!=0) {
LOG_ERROR("Unable to get options help for library '%s': %s!\n",
glob_xmount.output.pp_libs[i]->p_name,
glob_xmount.output.pp_libs[i]->
lib_functions.GetErrorMessage(ret));
}
if(p_buf==NULL) continue;
printf(" - %s\n",glob_xmount.output.pp_libs[i]->p_name);
printf("%s",p_buf);
printf("\n");
}
}
//! Check fuse settings
/*!
* Check if FUSE allows us to pass the -o allow_other parameter. This only works
* if we are root or user_allow_other is set in /etc/fuse.conf.
*
* In addition, this function also checks if the user is member of the fuse
* group which is generally needed to use fuse at all.
*/
static void CheckFuseSettings() {
#if !defined(__APPLE__) && defined(HAVE_GRP_H) && defined(HAVE_PWD_H)
struct group *p_group;
struct passwd *p_passwd;
#endif
int found;
FILE *h_fuse_conf;
char line[256];
glob_xmount.may_set_fuse_allow_other=FALSE;
if(geteuid()==0) {
// Running as root, there should be no problems
glob_xmount.may_set_fuse_allow_other=TRUE;
return;
}
#if !defined(__APPLE__) && defined(HAVE_GRP_H) && defined(HAVE_PWD_H)
// Check if a fuse group exists and if so, make sure user is a member of it.
// Makes only sense on Linux because as far as I know osxfuse has no own group
p_group=getgrnam("fuse");
if(p_group!=NULL) {
// Get effective user name
p_passwd=getpwuid(geteuid());
if(p_passwd==NULL) {
printf("\nWARNING: Unable to determine your effective user name. If "
"mounting works, you can ignore this message.\n\n");
return;
}
// Check if user is member of fuse group
found=FALSE;
while(*(p_group->gr_mem)!=NULL) {
if(strcmp(*(p_group->gr_mem),p_passwd->pw_name)==0) {
found=TRUE;
break;
}
p_group->gr_mem++;
}
if(found==FALSE) {
printf("\nWARNING: You are not a member of the \"fuse\" group. This will "
"prevent you from mounting images using xmount. Please add "
"yourself to the \"fuse\" group using the command "
"\"sudo usermod -a -G fuse %s\" and reboot your system or "
"execute xmount as root.\n\n",
p_passwd->pw_name);
return;
}
} else {
printf("\nWARNING: Your system does not seem to have a \"fuse\" group. If "
"mounting works, you can ignore this message.\n\n");
}
#endif
// Read FUSE's config file /etc/fuse.conf and check for set user_allow_other
h_fuse_conf=(FILE*)FOPEN("/etc/fuse.conf","r");
if(h_fuse_conf!=NULL) {
// Search conf file for set user_allow_others
found=FALSE;
while(fgets(line,sizeof(line),h_fuse_conf)!=NULL) {
// TODO: This works as long as there is no other parameter beginning with
// "user_allow_other" :)
if(strncmp(line,"user_allow_other",16)==0) {
found=TRUE;
break;
}
}
fclose(h_fuse_conf);
if(found==TRUE) {
glob_xmount.may_set_fuse_allow_other=TRUE;
} else {
printf("\nWARNING: FUSE will not allow other users nor root to access "
"your virtual harddisk image. To change this behavior, please "
"add \"user_allow_other\" to /etc/fuse.conf or execute xmount "
"as root.\n\n");
}
} else {
printf("\nWARNING: Unable to open /etc/fuse.conf. If mounting works, you "
"can ignore this message. If you encounter issues, please create "
"the file and add a single line containing the string "
"\"user_allow_other\" or execute xmount as root.\n\n");
return;
}
}
//! Parse command line options
/*!
* \param argc Number of cmdline params
* \param pp_argv Array containing cmdline params
* \return TRUE on success, FALSE on error
*/
static int ParseCmdLine(const int argc, char **pp_argv) {
int i=1;
int FuseMinusOControl=TRUE;
int FuseAllowOther=TRUE;
int first;
char *p_buf;
pts_InputImage p_input_image=NULL;
int ret;
// add pp_argv[0] to FUSE's argv
XMOUNT_MALLOC(glob_xmount.pp_fuse_argv,char**,sizeof(char*));
XMOUNT_STRSET(glob_xmount.pp_fuse_argv[0],pp_argv[0]);
glob_xmount.fuse_argc=1;
// Parse options
while(i<argc && *pp_argv[i]=='-') {
if(strlen(pp_argv[i])>1 && *(pp_argv[i]+1)!='-') {
// Options beginning with one - are mostly FUSE specific
if(strcmp(pp_argv[i],"-d")==0) {
// Enable FUSE's and xmount's debug mode
XMOUNT_REALLOC(glob_xmount.pp_fuse_argv,
char**,
(glob_xmount.fuse_argc+1)*sizeof(char*));
XMOUNT_STRSET(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc],
pp_argv[i])
glob_xmount.fuse_argc++;
glob_xmount.debug=TRUE;
} else if(strcmp(pp_argv[i],"-h")==0) {
// Print help message
PrintUsage(pp_argv[0]);
exit(0);
} else if(strcmp(pp_argv[i],"-o")==0) {
// Next parameter specifies fuse mount options
if((i+1)<argc) {
i++;
// As the user specified the -o option, we assume he knows what he is
// doing. We won't append allow_other automatically. And we allow him
// to disable allow_other by passing a single "-o no_allow_other"
// which won't be passed to FUSE as it is xmount specific.
if(strcmp(pp_argv[i],"no_allow_other")!=0) {
glob_xmount.fuse_argc+=2;
XMOUNT_REALLOC(glob_xmount.pp_fuse_argv,
char**,
glob_xmount.fuse_argc*sizeof(char*));
XMOUNT_STRSET(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc-2],
pp_argv[i-1]);
XMOUNT_STRSET(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc-1],
pp_argv[i]);
FuseMinusOControl=FALSE;
} else FuseAllowOther=FALSE;
} else {
LOG_ERROR("Couldn't parse fuse mount options!\n")
return FALSE;
}
} else if(strcmp(pp_argv[i],"-s")==0) {
// Enable FUSE's single threaded mode
XMOUNT_REALLOC(glob_xmount.pp_fuse_argv,
char**,
(glob_xmount.fuse_argc+1)*sizeof(char*));
XMOUNT_STRSET(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc],
pp_argv[i]);
glob_xmount.fuse_argc++;
} else if(strcmp(pp_argv[i],"-V")==0) {
// Display FUSE version info
XMOUNT_REALLOC(glob_xmount.pp_fuse_argv,
char**,
(glob_xmount.fuse_argc+1)*sizeof(char*));
XMOUNT_STRSET(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc],
pp_argv[i]);
glob_xmount.fuse_argc++;
} else {
LOG_ERROR("Unknown command line option \"%s\"\n",pp_argv[i]);
return FALSE;
}
} else {
// Options beginning with -- are xmount specific
if(strcmp(pp_argv[i],"--cache")==0 /*|| strcmp(pp_argv[i],"--rw")==0*/) {
// Emulate writable access to mounted image
// Next parameter must be cache file to read/write changes from/to
if((i+1)<argc) {
i++;
XMOUNT_STRSET(glob_xmount.cache.p_cache_file,pp_argv[i])
glob_xmount.output.writable=TRUE;
} else {
LOG_ERROR("You must specify a cache file!\n")
return FALSE;
}
LOG_DEBUG("Enabling virtual write support using cache file \"%s\"\n",
glob_xmount.cache.p_cache_file)
} else if(strcmp(pp_argv[i],"--in")==0) {
// Specify input image type and source files
if((i+2)<argc) {
i++;
// Alloc and init new ts_InputImage struct
XMOUNT_MALLOC(p_input_image,pts_InputImage,sizeof(ts_InputImage));
XMOUNT_STRSET(p_input_image->p_type,pp_argv[i]);
p_input_image->pp_files=NULL;
p_input_image->p_functions=NULL;
p_input_image->p_handle=NULL;
// Parse input image filename(s) and add to p_input_image->pp_files
i++;
p_input_image->files_count=0;
while(i<(argc-1) && strncmp(pp_argv[i],"--",2)!=0) {
p_input_image->files_count++;
XMOUNT_REALLOC(p_input_image->pp_files,
char**,
p_input_image->files_count*sizeof(char*));
XMOUNT_STRSET(p_input_image->pp_files[p_input_image->files_count-1],
pp_argv[i]);
i++;
}
i--;
if(p_input_image->files_count==0) {
LOG_ERROR("No input files specified for \"--in %s\"!\n",
p_input_image->p_type)
free(p_input_image->p_type);
free(p_input_image);
return FALSE;
}
// Add input image struct to input image array
glob_xmount.input.images_count++;
XMOUNT_REALLOC(glob_xmount.input.pp_images,
pts_InputImage*,
glob_xmount.input.images_count*
sizeof(pts_InputImage));
glob_xmount.input.pp_images[glob_xmount.input.images_count-1]=
p_input_image;
} else {
LOG_ERROR("You must specify an input image type and source file!\n");
return FALSE;
}
} else if(strcmp(pp_argv[i],"--inopts")==0) {
// Set input lib options
if((i+1)<argc) {
i++;
if(glob_xmount.input.pp_lib_params==NULL) {
if(SplitLibraryParameters(pp_argv[i],
&(glob_xmount.input.lib_params_count),
&(glob_xmount.input.pp_lib_params)
)==FALSE)
{
LOG_ERROR("Unable to parse input library options '%s'!\n",
pp_argv[i]);
return FALSE;
}
} else {
LOG_ERROR("You can only specify --inopts once!")
return FALSE;
}
} else {
LOG_ERROR("You must specify special options!\n");
return FALSE;
}
} else if(strcmp(pp_argv[i],"--morph")==0) {
// Set morphing lib to use
if((i+1)<argc) {
i++;
if(glob_xmount.morphing.p_morph_type==NULL) {
XMOUNT_STRSET(glob_xmount.morphing.p_morph_type,pp_argv[i]);
} else {
LOG_ERROR("You can only specify --morph once!")
return FALSE;
}
} else {
LOG_ERROR("You must specify morphing type!\n");
return FALSE;
}
} else if(strcmp(pp_argv[i],"--morphopts")==0) {
// Set morphing lib options
if((i+1)<argc) {
i++;
if(glob_xmount.morphing.pp_lib_params==NULL) {
if(SplitLibraryParameters(pp_argv[i],
&(glob_xmount.morphing.lib_params_count),
&(glob_xmount.morphing.pp_lib_params)
)==FALSE)
{
LOG_ERROR("Unable to parse morphing library options '%s'!\n",
pp_argv[i]);
return FALSE;
}
} else {
LOG_ERROR("You can only specify --morphopts once!")
return FALSE;
}
} else {
LOG_ERROR("You must specify special morphing lib params!\n");
return FALSE;
}
} else if(strcmp(pp_argv[i],"--offset")==0) {
// Set input image offset
if((i+1)<argc) {
i++;
glob_xmount.input.image_offset=StrToUint64(pp_argv[i],&ret);
if(ret==0) {
LOG_ERROR("Unable to convert '%s' to a number!\n",pp_argv[i])
return FALSE;
}
} else {
LOG_ERROR("You must specify an offset!\n")
return FALSE;
}
LOG_DEBUG("Setting input image offset to \"%" PRIu64 "\"\n",
glob_xmount.input.image_offset)
} else if(strcmp(pp_argv[i],"--out")==0) {
// Set output lib to use
if((i+1)<argc) {
i++;
if(glob_xmount.output.p_output_format==NULL) {
XMOUNT_STRSET(glob_xmount.output.p_output_format,pp_argv[i]);
} else {
LOG_ERROR("You can only specify --out once!")
return FALSE;
}
} else {
LOG_ERROR("You must specify an output format!\n");
return FALSE;
}
} else if(strcmp(pp_argv[i],"--outopts")==0) {
// Set output lib options
if((i+1)<argc) {
i++;
if(glob_xmount.output.pp_lib_params==NULL) {
if(SplitLibraryParameters(pp_argv[i],
&(glob_xmount.output.lib_params_count),
&(glob_xmount.output.pp_lib_params)
)==FALSE)
{
LOG_ERROR("Unable to parse output library options '%s'!\n",
pp_argv[i]);
return FALSE;
}
} else {
LOG_ERROR("You can only specify --outopts once!")
return FALSE;
}
} else {
LOG_ERROR("You must specify special output lib params!\n");
return FALSE;
}
} else if(strcmp(pp_argv[i],"--owcache")==0) {
// Enable writable access to mounted image and overwrite existing cache
// Next parameter must be cache file to read/write changes from/to
if((i+1)<argc) {
i++;
XMOUNT_STRSET(glob_xmount.cache.p_cache_file,pp_argv[i])
glob_xmount.output.writable=TRUE;
glob_xmount.cache.overwrite_cache=TRUE;
} else {
LOG_ERROR("You must specify a cache file!\n")
return FALSE;
}
LOG_DEBUG("Enabling virtual write support overwriting cache file %s\n",
glob_xmount.cache.p_cache_file)
} else if(strcmp(pp_argv[i],"--sizelimit")==0) {
// Set input image size limit
if((i+1)<argc) {
i++;
glob_xmount.input.image_size_limit=StrToUint64(pp_argv[i],&ret);
if(ret==0) {
LOG_ERROR("Unable to convert '%s' to a number!\n",pp_argv[i])
return FALSE;
}
} else {
LOG_ERROR("You must specify a size limit!\n")
return FALSE;
}
LOG_DEBUG("Setting input image size limit to \"%" PRIu64 "\"\n",
glob_xmount.input.image_size_limit)
} else if(strcmp(pp_argv[i],"--version")==0 ||
strcmp(pp_argv[i],"--info")==0)
{
// Print xmount info
printf(XMOUNT_COPYRIGHT_NOTICE "\n\n",XMOUNT_VERSION);
#ifdef __GNUC__
printf(" compile timestamp: %s %s\n",__DATE__,__TIME__);
printf(" gcc version: %s\n",__VERSION__);
#endif
printf(" loaded input libraries:\n");
for(uint32_t ii=0;ii<glob_xmount.input.libs_count;ii++) {
printf(" - %s supporting ",glob_xmount.input.pp_libs[ii]->p_name);
p_buf=glob_xmount.input.pp_libs[ii]->p_supported_input_types;
first=TRUE;
while(*p_buf!='\0') {
if(first) {
printf("\"%s\"",p_buf);
first=FALSE;
} else printf(", \"%s\"",p_buf);
p_buf+=(strlen(p_buf)+1);
}
printf("\n");
}
printf(" loaded morphing libraries:\n");
for(uint32_t ii=0;ii<glob_xmount.morphing.libs_count;ii++) {
printf(" - %s supporting ",
glob_xmount.morphing.pp_libs[ii]->p_name);
p_buf=glob_xmount.morphing.pp_libs[ii]->p_supported_morphing_types;
first=TRUE;
while(*p_buf!='\0') {
if(first) {
printf("\"%s\"",p_buf);
first=FALSE;
} else printf(", \"%s\"",p_buf);
p_buf+=(strlen(p_buf)+1);
}
printf("\n");
}
printf(" loaded output libraries:\n");
for(uint32_t ii=0;ii<glob_xmount.output.libs_count;ii++) {
printf(" - %s supporting ",
glob_xmount.output.pp_libs[ii]->p_name);
p_buf=glob_xmount.output.pp_libs[ii]->p_supported_output_formats;
first=TRUE;
while(*p_buf!='\0') {
if(first) {
printf("\"%s\"",p_buf);
first=FALSE;
} else printf(", \"%s\"",p_buf);
p_buf+=(strlen(p_buf)+1);
}
printf("\n");
}
printf("\n");
exit(0);
} else {
LOG_ERROR("Unknown command line option \"%s\"\n",pp_argv[i]);
return FALSE;
}
}
i++;
}
// Extract mountpoint
if(i==(argc-1)) {
XMOUNT_STRSET(glob_xmount.p_mountpoint,pp_argv[argc-1])
XMOUNT_REALLOC(glob_xmount.pp_fuse_argv,
char**,
(glob_xmount.fuse_argc+1)*sizeof(char*));
XMOUNT_STRSET(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc],
glob_xmount.p_mountpoint);
glob_xmount.fuse_argc++;
} else {
LOG_ERROR("No mountpoint specified!\n")
return FALSE;
}
if(FuseMinusOControl==TRUE) {
// We control the -o flag, set subtype, fsname and allow_other options
glob_xmount.fuse_argc+=2;
XMOUNT_REALLOC(glob_xmount.pp_fuse_argv,
char**,
glob_xmount.fuse_argc*sizeof(char*));
XMOUNT_STRSET(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc-2],"-o");
XMOUNT_STRSET(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc-1],
"subtype=xmount");
if(glob_xmount.input.images_count!=0) {
// Set name of first source file as fsname
XMOUNT_STRAPP(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc-1],
",fsname='");
// If possible, use full path
p_buf=realpath(glob_xmount.input.pp_images[0]->pp_files[0],NULL);
if(p_buf==NULL) {
XMOUNT_STRSET(p_buf,glob_xmount.input.pp_images[0]->pp_files[0]);
}
// Make sure fsname does not include some forbidden chars
for(uint32_t i=0;i<strlen(p_buf);i++) {
if(p_buf[i]=='\'') p_buf[i]='_';
}
// Set fsname
XMOUNT_STRAPP(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc-1],
p_buf);
XMOUNT_STRAPP(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc-1],
"'");
free(p_buf);
}
if(FuseAllowOther==TRUE) {
// Add "allow_other" option if allowed
if(glob_xmount.may_set_fuse_allow_other) {
XMOUNT_STRAPP(glob_xmount.pp_fuse_argv[glob_xmount.fuse_argc-1],
",allow_other");
}
}
}
return TRUE;
}
//! Extract output file name from input image name
/*!
* \param p_orig_name Name of input image (may include a path)
* \return TRUE on success, FALSE on error
*/
static int ExtractOutputFileNames(char *p_orig_name) {
char *tmp;
// Truncate any leading path
tmp=strrchr(p_orig_name,'/');
if(tmp!=NULL) p_orig_name=tmp+1;
// Extract file extension
tmp=strrchr(p_orig_name,'.');
// Set leading '/'
XMOUNT_STRSET(glob_xmount.output.p_virtual_image_path,"/");
XMOUNT_STRSET(glob_xmount.output.p_info_path,"/");
// Copy filename
if(tmp==NULL) {
// Input image filename has no extension
XMOUNT_STRAPP(glob_xmount.output.p_virtual_image_path,p_orig_name);
XMOUNT_STRAPP(glob_xmount.output.p_info_path,p_orig_name);
XMOUNT_STRAPP(glob_xmount.output.p_info_path,".info");
} else {
XMOUNT_STRNAPP(glob_xmount.output.p_virtual_image_path,p_orig_name,
strlen(p_orig_name)-strlen(tmp));
XMOUNT_STRNAPP(glob_xmount.output.p_info_path,p_orig_name,
strlen(p_orig_name)-strlen(tmp));
XMOUNT_STRAPP(glob_xmount.output.p_info_path,".info");
}
// Add virtual file extensions
// TODO: Get from output lib and add
//XMOUNT_STRAPP(glob_xmount.output.p_virtual_image_path,".dd");
LOG_DEBUG("Set virtual image name to \"%s\"\n",
glob_xmount.output.p_virtual_image_path);
LOG_DEBUG("Set virtual image info name to \"%s\"\n",
glob_xmount.output.p_info_path);
return TRUE;
}
//! Get size of morphed image
/*!
* \param p_size Buf to save size to
* \return TRUE on success, FALSE on error
*/
static int GetMorphedImageSize(uint64_t *p_size) {
int ret;
ret=glob_xmount.morphing.p_functions->Size(glob_xmount.morphing.p_handle,
p_size);
if(ret!=0) {
LOG_ERROR("Unable to get morphed image size: %s!\n",
glob_xmount.morphing.p_functions->GetErrorMessage(ret));
return FALSE;
}
return TRUE;
}
//! Get size of output image
/*!
* \param p_size Pointer to an uint64_t to which the size will be written to
* \return TRUE on success, FALSE on error
*/
-static int GetOutputImageSize(uint64_t *p_size) {
+int GetOutputImageSize(uint64_t *p_size) {
int ret;
uint64_t output_image_size=0;
if(glob_xmount.output.image_size!=0) {
*p_size=glob_xmount.output.image_size;
return TRUE;
}
ret=glob_xmount.output.p_functions->Size(glob_xmount.output.p_handle,
&output_image_size);
if(ret!=0) {
LOG_ERROR("Couldn't get output image size!\n")
return FALSE;
}
glob_xmount.output.image_size=output_image_size;
*p_size=output_image_size;
return TRUE;
}
//! Read data from input image
/*!
* \param p_image Image from which to read data
* \param p_buf Pointer to buffer to write read data to (must be preallocated!)
* \param offset Offset at which data should be read
* \param size Size of data which should be read (size of buffer)
* \param p_read Number of read bytes on success
* \return 0 on success, negated error code on error
*/
static int ReadInputImageData(pts_InputImage p_image,
char *p_buf,
off_t offset,
size_t size,
size_t *p_read)
{
int ret;
size_t to_read=0;
int read_errno=0;
LOG_DEBUG("Reading %zu bytes at offset %zu from input image '%s'\n",
size,
offset,
p_image->pp_files[0]);
// Make sure we aren't reading past EOF of image file
if(offset>=p_image->size) {
// Offset is beyond image size
LOG_DEBUG("Offset %zu is at / beyond size of input image '%s'\n",
offset,
p_image->pp_files[0]);
*p_read=0;
return 0;
}
if(offset+size>p_image->size) {
// Attempt to read data past EOF of image file
to_read=p_image->size-offset;
LOG_DEBUG("Attempt to read data past EOF of input image '%s'. "
"Correcting size from %zu to %zu\n",
p_image->pp_files[0],
size,
to_read);
} else to_read=size;
// Read data from image file (adding input image offset if one was specified)
ret=p_image->p_functions->Read(p_image->p_handle,
p_buf,
offset+glob_xmount.input.image_offset,
to_read,
p_read,
&read_errno);
if(ret!=0) {
LOG_ERROR("Couldn't read %zu bytes at offset %zu from input image "
"'%s': %s!\n",
to_read,
offset,
p_image->pp_files[0],
p_image->p_functions->GetErrorMessage(ret));
if(read_errno==0) return -EIO;
else return (read_errno*(-1));
}
return 0;
}
//! Read data from morphed image
/*!
* \param p_buf Pointer to buffer to write read data to (must be preallocated!)
* \param offset Offset at which data should be read
* \param size Size of data which should be read (size of buffer)
* \param p_read Number of read bytes on success
* \return TRUE on success, negated error code on error
*/
static int ReadMorphedImageData(char *p_buf,
off_t offset,
size_t size,
size_t *p_read)
{
uint64_t block_off=0;
uint64_t cur_block=0;
uint64_t cur_to_read=0;
uint64_t image_size=0;
size_t read=0;
size_t to_read=0;
int ret;
teGidaFsError gidafs_ret=eGidaFsError_None;
// Make sure we aren't reading past EOF of image file
if(GetMorphedImageSize(&image_size)!=TRUE) {
LOG_ERROR("Couldn't get size of morphed image!\n");
return -EIO;
}
if(offset>=image_size) {
// Offset is beyond image size
LOG_DEBUG("Offset %zu is at / beyond size of morphed image.\n",offset);
*p_read=0;
return FALSE;
}
if(offset+size>image_size) {
// Attempt to read data past EOF of morphed image file
to_read=image_size-offset;
LOG_DEBUG("Attempt to read data past EOF of morphed image. Corrected size "
"from %zu to %" PRIu64 ".\n",
size,
to_read);
} else to_read=size;
// Calculate block to start reading data from
cur_block=offset/CACHE_BLOCK_SIZE;
block_off=offset%CACHE_BLOCK_SIZE;
// Read image data
while(to_read!=0) {
// Calculate how many bytes we have to read from this block
if(block_off+to_read>CACHE_BLOCK_SIZE) {
cur_to_read=CACHE_BLOCK_SIZE-block_off;
} else cur_to_read=to_read;
// Check if block is cached
if(glob_xmount.output.writable==TRUE &&
glob_xmount.cache.p_block_cache_index[cur_block]!=CACHE_BLOCK_FREE)
{
// Write support enabled and need to read altered data from cachefile
LOG_DEBUG("Reading %zu bytes at offset %" PRIu64
" from block cache file\n",
cur_to_read,
glob_xmount.cache.p_block_cache_index[cur_block]+block_off)
gidafs_ret=GidaFsLib_ReadFile(glob_xmount.cache.h_cache_file,
glob_xmount.cache.h_block_cache,
glob_xmount.cache.
p_block_cache_index[cur_block]+block_off,
cur_to_read,
p_buf,
&read);
if(gidafs_ret!=eGidaFsError_None || read!=cur_to_read) {
LOG_ERROR("Unable to read cached data from block %" PRIu64
": Error code %u!\n",
cur_block,
gidafs_ret);
return -EIO;
}
} else {
// No write support or data not cached
ret=glob_xmount.morphing.p_functions->Read(glob_xmount.morphing.p_handle,
p_buf,
(cur_block*CACHE_BLOCK_SIZE)+
block_off,
cur_to_read,
&read);
if(ret!=0 || read!=cur_to_read) {
LOG_ERROR("Couldn't read %zu bytes at offset %zu from morphed image: "
"%s!\n",
cur_to_read,
offset,
glob_xmount.morphing.p_functions->GetErrorMessage(ret));
return -EIO;
}
LOG_DEBUG("Read %" PRIu64 " bytes at offset %" PRIu64
" from morphed image file\n",
cur_to_read,
(cur_block*CACHE_BLOCK_SIZE)+block_off);
}
cur_block++;
block_off=0;
p_buf+=cur_to_read;
to_read-=cur_to_read;
}
*p_read=to_read;
return TRUE;
}
//! Write data to morphed image
/*!
* \param p_buf Buffer with data to write
* \param offset Offset to start writing at
* \param count Amount of bytes to write
* \param p_written Amount of successfully written bytes
* \return TRUE on success, negated error code on error
*/
static int WriteMorphedImageData(const char *p_buf,
off_t offset,
size_t count,
size_t *p_written)
{
uint64_t block_off=0;
uint64_t cur_block=0;
+ uint64_t cur_to_read=0;
uint64_t cur_to_write=0;
uint64_t image_size=0;
size_t written=0;
size_t to_write=0;
int ret;
+ teGidaFsError gidafs_ret=eGidaFsError_None;
+ char *p_buf2=NULL;
// Make sure we aren't writing past EOF of image file
if(GetMorphedImageSize(&image_size)!=TRUE) {
LOG_ERROR("Couldn't get size of morphed image!\n");
return -EIO;
}
if(offset>=image_size) {
// Offset is beyond image size
LOG_DEBUG("Offset %zu is at / beyond size of morphed image.\n",offset);
*p_written=0;
return 0;
}
if(offset+count>image_size) {
// Attempt to write data past EOF of morphed image file
to_write=image_size-offset;
LOG_DEBUG("Attempt to write data past EOF of morphed image. Corrected size "
"from %zu to %" PRIu64 ".\n",
count,
to_write);
} else to_write=count;
// Calculate block to start writing data to
cur_block=offset/CACHE_BLOCK_SIZE;
block_off=offset%CACHE_BLOCK_SIZE;
while(to_write!=0) {
// Calculate how many bytes we have to write to this block
if(block_off+to_write>CACHE_BLOCK_SIZE) {
cur_to_write=CACHE_BLOCK_SIZE-block_off;
} else cur_to_write=to_write;
-/*
- if(glob_xmount.cache.p_cache_blkidx[cur_block].Assigned==1) {
- // Block was already cached
- // Seek to data offset in cache file
- if(fseeko(glob_xmount.cache.h_old_cache_file,
- glob_xmount.cache.p_cache_blkidx[cur_block].off_data+block_off,
- SEEK_SET)!=0)
- {
- LOG_ERROR("Couldn't seek to cached block at address %" PRIu64 "\n",
- glob_xmount.cache.p_cache_blkidx[cur_block].off_data+
- block_off);
- return -1;
- }
- if(fwrite(p_write_buf,cur_to_write,1,glob_xmount.cache.h_old_cache_file)!=1) {
- LOG_ERROR("Error while writing %zu bytes "
- "to cache file at offset %" PRIu64 "!\n",
- cur_to_write,
- glob_xmount.cache.p_cache_blkidx[cur_block].off_data+
- block_off);
- return -1;
+
+ // Check if block is cached
+ if(glob_xmount.cache.p_block_cache_index[cur_block]!=CACHE_BLOCK_FREE) {
+ // Block is cached
+ gidafs_ret=GidaFsLib_WriteFile(glob_xmount.cache.h_cache_file,
+ glob_xmount.cache.h_block_cache,
+ glob_xmount.cache.
+ p_block_cache_index[cur_block]+block_off,
+ cur_to_write,
+ p_buf,
+ &written);
+ if(gidafs_ret!=eGidaFsError_None || written!=cur_to_write) {
+ LOG_ERROR("Unable to write data to cached block %" PRIu64
+ ": Error code %u!\n",
+ cur_block,
+ gidafs_ret);
+ return -EIO;
}
- LOG_DEBUG("Wrote %zd bytes at offset %" PRIu64
- " to cache file\n",cur_to_write,
- glob_xmount.cache.p_cache_blkidx[cur_block].off_data+
- block_off);
+
+ LOG_DEBUG("Wrote %" PRIu64 " bytes at offset %" PRIu64
+ " to block cache file\n",
+ cur_to_write,
+ glob_xmount.cache.p_block_cache_index[cur_block]+block_off);
} else {
// Uncached block. Need to cache entire new block
- // Seek to end of cache file to append new cache block
- fseeko(glob_xmount.cache.h_old_cache_file,0,SEEK_END);
- glob_xmount.cache.p_cache_blkidx[cur_block].off_data=
- ftello(glob_xmount.cache.h_old_cache_file);
- if(block_off!=0) {
- // Changed data does not begin at block boundry. Need to prepend
- // with data from virtual image file
- XMOUNT_MALLOC(p_buf2,char*,block_off*sizeof(char));
- ret=ReadMorphedImageData(p_buf2,
- file_offset-block_off,
- block_off,
- &read);
- if(ret!=TRUE || read!=block_off) {
- LOG_ERROR("Couldn't read data from morphed image!\n")
- return -1;
- }
- if(fwrite(p_buf2,block_off,1,glob_xmount.cache.h_old_cache_file)!=1) {
- LOG_ERROR("Couldn't writing %" PRIu64 " bytes "
- "to cache file at offset %" PRIu64 "!\n",
- block_off,
- glob_xmount.cache.p_cache_blkidx[cur_block].off_data);
- return -1;
- }
- LOG_DEBUG("Prepended changed data with %" PRIu64
- " bytes from virtual image file at offset %" PRIu64
- "\n",block_off,file_offset-block_off)
- free(p_buf2);
+ // Prepare new write buffer
+ XMOUNT_MALLOC(p_buf2,char*,CACHE_BLOCK_SIZE);
+ memset(p_buf2,0x00,CACHE_BLOCK_SIZE);
+
+ // Read full block from morphed image
+ cur_to_read=CACHE_BLOCK_SIZE;
+ if((cur_block*CACHE_BLOCK_SIZE)+CACHE_BLOCK_SIZE>image_size) {
+ cur_to_read=CACHE_BLOCK_SIZE-(((cur_block*CACHE_BLOCK_SIZE)+
+ CACHE_BLOCK_SIZE)-image_size);
}
- if(fwrite(p_write_buf,cur_to_write,1,glob_xmount.cache.h_old_cache_file)!=1) {
- LOG_ERROR("Error while writing %zd bytes "
- "to cache file at offset %" PRIu64 "!\n",
- cur_to_write,
- glob_xmount.cache.p_cache_blkidx[cur_block].off_data+
- block_off);
- return -1;
+ ret=glob_xmount.morphing.p_functions->Read(glob_xmount.morphing.p_handle,
+ p_buf2,
+ cur_block*CACHE_BLOCK_SIZE,
+ cur_to_read,
+ &read);
+ if(ret!=0 || read!=cur_to_read) {
+ LOG_ERROR("Couldn't read %" PRIu64 " bytes at offset %zu "
+ "from morphed image: %s!\n",
+ cur_to_read,
+ offset,
+ glob_xmount.morphing.p_functions->GetErrorMessage(ret));
+ XMOUNT_FREE(p_buf2);
+ return -EIO;
}
- if(block_off+cur_to_write!=CACHE_BLOCK_SIZE) {
- // Changed data does not end at block boundry. Need to append
- // with data from virtual image file
- XMOUNT_MALLOC(p_buf2,char*,(CACHE_BLOCK_SIZE-
- (block_off+cur_to_write))*sizeof(char))
- memset(p_buf2,0,CACHE_BLOCK_SIZE-(block_off+cur_to_write));
- if((file_offset-block_off)+CACHE_BLOCK_SIZE>orig_image_size) {
- // Original image is smaller than full cache block
- ret=ReadMorphedImageData(p_buf2,
- file_offset+cur_to_write,
- orig_image_size-(file_offset+cur_to_write),
- &read);
- if(ret!=TRUE || read!=orig_image_size-(file_offset+cur_to_write)) {
- LOG_ERROR("Couldn't read data from virtual image file!\n")
- return -1;
- }
- } else {
- ret=ReadMorphedImageData(p_buf2,
- file_offset+cur_to_write,
- CACHE_BLOCK_SIZE-(block_off+cur_to_write),
- &read);
- if(ret!=TRUE || read!=CACHE_BLOCK_SIZE-(block_off+cur_to_write)) {
- LOG_ERROR("Couldn't read data from virtual image file!\n")
- return -1;
- }
- }
- if(fwrite(p_buf2,
- CACHE_BLOCK_SIZE-(block_off+cur_to_write),
- 1,
- glob_xmount.cache.h_old_cache_file)!=1)
- {
- LOG_ERROR("Error while writing %zd bytes "
- "to cache file at offset %" PRIu64 "!\n",
- CACHE_BLOCK_SIZE-(block_off+cur_to_write),
- glob_xmount.cache.p_cache_blkidx[cur_block].off_data+
- block_off+cur_to_write);
- return -1;
- }
- free(p_buf2);
+
+ // Set changed data
+ memcpy(p_buf2+block_off,p_buf,cur_to_write);
+
+ // Write new block to block cache
+ // Get current block cache size
+ gidafs_ret=GidaFsLib_GetFileSize(glob_xmount.cache.h_cache_file,
+ glob_xmount.cache.h_block_cache,
+ &(glob_xmount.cache.
+ p_block_cache_index[cur_block]));
+ if(gidafs_ret!=eGidaFsError_None) {
+ LOG_ERROR("Unable to get current block cache size: Error code %u!\n",
+ gidafs_ret);
+ XMOUNT_FREE(p_buf2);
+ return -EIO;
}
- // All important data for this cache block has been written,
- // flush all buffers and mark cache block as assigned
- fflush(glob_xmount.cache.h_old_cache_file);
-#ifndef __APPLE__
- ioctl(fileno(glob_xmount.cache.h_old_cache_file),BLKFLSBUF,0);
-#endif
- glob_xmount.cache.p_cache_blkidx[cur_block].Assigned=1;
- // Update cache block index entry in cache file
- fseeko(glob_xmount.cache.h_old_cache_file,
- sizeof(ts_CacheFileHeader)+
- (cur_block*sizeof(ts_CacheFileBlockIndex)),
- SEEK_SET);
- if(fwrite(&(glob_xmount.cache.p_cache_blkidx[cur_block]),
- sizeof(ts_CacheFileBlockIndex),
- 1,
- glob_xmount.cache.h_old_cache_file)!=1)
- {
- LOG_ERROR("Couldn't update cache file block index!\n");
- return -1;
+ // Append new block
+ gidafs_ret=GidaFsLib_WriteFile(glob_xmount.cache.h_cache_file,
+ glob_xmount.cache.h_block_cache,
+ glob_xmount.cache.
+ p_block_cache_index[cur_block],
+ CACHE_BLOCK_SIZE,
+ p_buf2,
+ &written);
+ if(gidafs_ret!=eGidaFsError_None || written!=cur_to_write) {
+ LOG_ERROR("Unable to write data to cached block %" PRIu64
+ ": Error code %u!\n",
+ cur_block,
+ gidafs_ret);
+ XMOUNT_FREE(p_buf2);
+ return -EIO;
+ }
+ XMOUNT_FREE(p_buf2);
+ // Update on-disk block cache index
+ ret=UpdateBlockCacheIndex(cur_block,
+ glob_xmount.cache.p_block_cache_index[
+ cur_block]);
+ if(ret!=TRUE) {
+ LOG_ERROR("Unable to update block cache index %" PRIu64
+ ": Error code %u!\n",
+ cur_block,
+ gidafs_ret);
+ return -EIO;
}
+
LOG_DEBUG("Updated cache file block index: Number=%" PRIu64
", Data offset=%" PRIu64 "\n",
cur_block,
- glob_xmount.cache.p_cache_blkidx[cur_block].off_data);
+ glob_xmount.cache.p_block_cache_index[cur_block]);
}
- // Flush buffers
- fflush(glob_xmount.cache.h_old_cache_file);
-#ifndef __APPLE__
- ioctl(fileno(glob_xmount.cache.h_old_cache_file),BLKFLSBUF,0);
-#endif
-*/
+
block_off=0;
cur_block++;
p_buf+=cur_to_write;
to_write-=cur_to_write;
}
*p_written=to_write;
return TRUE;
}
//! Read data from output image
/*!
* \param p_buf Pointer to buffer to write read data to
* \param offset Offset at which data should be read
* \param size Size of data which should be read
* \return Number of read bytes on success or negated error code on error
*/
-static int ReadOutputImageData(char *p_buf, off_t offset, size_t size) {
+int ReadOutputImageData(char *p_buf, off_t offset, size_t size) {
uint64_t output_image_size;
size_t read=0;
int ret;
// Get output image size
if(GetOutputImageSize(&output_image_size)!=TRUE) {
LOG_ERROR("Couldn't get size of output image!\n")
return -EIO;
}
// Make sure request is within output image
if(offset>=output_image_size) {
LOG_DEBUG("Offset %zu is at / beyond size of output image.\n",offset);
return 0;
}
if(offset+size>output_image_size) {
LOG_DEBUG("Attempt to read data past EOF of output image. Correcting size "
"from %zu to %zu.\n",
size,
output_image_size-offset);
size=output_image_size-offset;
}
// Read data
ret=glob_xmount.output.p_functions->Read(glob_xmount.output.p_handle,
p_buf,
offset,
size,
&read);
if(ret!=0) {
LOG_ERROR("Unable to read %zu bytes at offset %zu from output image!\n",
size,
offset)
return ret;
} else if(read!=size) {
LOG_WARNING("Unable to read all requested data from output image!\n")
return read;
}
return size;
}
//! Write data to output image
/*!
* \param p_buf Buffer with data to write
* \param offset Offset to write to
* \param size Amount of bytes to write
* \return Number of written bytes on success or "-1" on error
*/
-static int WriteOutputImageData(const char *p_buf, off_t offset, size_t size) {
+int WriteOutputImageData(const char *p_buf, off_t offset, size_t size) {
uint64_t output_image_size;
int ret;
size_t written;
// Get output image size
if(!GetOutputImageSize(&output_image_size)) {
LOG_ERROR("Couldn't get output image size!\n")
return -1;
}
// Make sure write is within output image
if(offset>=output_image_size) {
LOG_ERROR("Attempt to write beyond EOF of output image file!\n")
return -1;
}
if(offset+size>output_image_size) {
LOG_DEBUG("Attempt to write past EOF of output image file. Correcting size "
"from %zu to %zu.\n",
size,
output_image_size-offset);
size=output_image_size-offset;
}
ret=glob_xmount.output.p_functions->Write(glob_xmount.output.p_handle,
p_buf,
offset,
size,
&written);
if(ret!=0) {
LOG_ERROR("Unable to write %zu bytes at offset %zu to output image!\n",
offset,
size)
return ret;
} else if(written!=size) {
LOG_WARNING("Unable to write all requested data to output image!\n")
}
return size;
-
- // TODO: Move part of this code to WriteMorphedImageData() !!
-/*
- // Get original image size
- if(!GetMorphedImageSize(&orig_image_size)) {
- LOG_ERROR("Couldn't get morphed image size!\n")
- return -1;
- }
-
- // Cache virtual image type specific data preceeding original image data
- switch(glob_xmount.output.VirtImageType) {
- case VirtImageType_DD:
- case VirtImageType_DMG:
- case VirtImageType_VMDK:
- case VirtImageType_VMDKS:
- break;
- case VirtImageType_VDI:
- if(file_offset<glob_xmount.output.vdi.vdi_header_size) {
- ret=SetVdiFileHeaderData(p_write_buf,file_offset,to_write);
- if(ret==-1) {
- LOG_ERROR("Couldn't write data to virtual VDI file header!\n")
- return -1;
- }
- if(ret==to_write) return to_write;
- else {
- to_write-=ret;
- p_write_buf+=ret;
- file_offset=0;
- }
- } else file_offset-=glob_xmount.output.vdi.vdi_header_size;
- break;
- case VirtImageType_VHD:
- // When emulating VHD, make sure the while loop below only writes data
- // available in the original image. Any VHD footer data must be written
- // afterwards.
- if(file_offset>=orig_image_size) {
- to_write_later=to_write;
- to_write=0;
- } else if((file_offset+to_write)>orig_image_size) {
- to_write_later=(file_offset+to_write)-orig_image_size;
- to_write-=to_write_later;
- }
- break;
- }
-
- // Calculate block to write data to
- cur_block=file_offset/CACHE_BLOCK_SIZE;
- block_offset=file_offset%CACHE_BLOCK_SIZE;
-
- while(to_write!=0) {
- // Calculate how many bytes we have to write to this block
- if(block_offset+to_write>CACHE_BLOCK_SIZE) {
- to_write_now=CACHE_BLOCK_SIZE-block_offset;
- } else to_write_now=to_write;
- if(glob_xmount.cache.p_cache_blkidx[cur_block].Assigned==1) {
- // Block was already cached
- // Seek to data offset in cache file
- if(fseeko(glob_xmount.cache.h_old_cache_file,
- glob_xmount.cache.p_cache_blkidx[cur_block].off_data+block_offset,
- SEEK_SET)!=0)
- {
- LOG_ERROR("Couldn't seek to cached block at address %" PRIu64 "\n",
- glob_xmount.cache.p_cache_blkidx[cur_block].off_data+
- block_offset);
- return -1;
- }
- if(fwrite(p_write_buf,to_write_now,1,glob_xmount.cache.h_old_cache_file)!=1) {
- LOG_ERROR("Error while writing %zu bytes "
- "to cache file at offset %" PRIu64 "!\n",
- to_write_now,
- glob_xmount.cache.p_cache_blkidx[cur_block].off_data+
- block_offset);
- return -1;
- }
- LOG_DEBUG("Wrote %zd bytes at offset %" PRIu64
- " to cache file\n",to_write_now,
- glob_xmount.cache.p_cache_blkidx[cur_block].off_data+
- block_offset);
- } else {
- // Uncached block. Need to cache entire new block
- // Seek to end of cache file to append new cache block
- fseeko(glob_xmount.cache.h_old_cache_file,0,SEEK_END);
- glob_xmount.cache.p_cache_blkidx[cur_block].off_data=
- ftello(glob_xmount.cache.h_old_cache_file);
- if(block_offset!=0) {
- // Changed data does not begin at block boundry. Need to prepend
- // with data from virtual image file
- XMOUNT_MALLOC(p_buf2,char*,block_offset*sizeof(char));
- ret=ReadMorphedImageData(p_buf2,
- file_offset-block_offset,
- block_offset,
- &read);
- if(ret!=TRUE || read!=block_offset) {
- LOG_ERROR("Couldn't read data from morphed image!\n")
- return -1;
- }
- if(fwrite(p_buf2,block_offset,1,glob_xmount.cache.h_old_cache_file)!=1) {
- LOG_ERROR("Couldn't writing %" PRIu64 " bytes "
- "to cache file at offset %" PRIu64 "!\n",
- block_offset,
- glob_xmount.cache.p_cache_blkidx[cur_block].off_data);
- return -1;
- }
- LOG_DEBUG("Prepended changed data with %" PRIu64
- " bytes from virtual image file at offset %" PRIu64
- "\n",block_offset,file_offset-block_offset)
- free(p_buf2);
- }
- if(fwrite(p_write_buf,to_write_now,1,glob_xmount.cache.h_old_cache_file)!=1) {
- LOG_ERROR("Error while writing %zd bytes "
- "to cache file at offset %" PRIu64 "!\n",
- to_write_now,
- glob_xmount.cache.p_cache_blkidx[cur_block].off_data+
- block_offset);
- return -1;
- }
- if(block_offset+to_write_now!=CACHE_BLOCK_SIZE) {
- // Changed data does not end at block boundry. Need to append
- // with data from virtual image file
- XMOUNT_MALLOC(p_buf2,char*,(CACHE_BLOCK_SIZE-
- (block_offset+to_write_now))*sizeof(char))
- memset(p_buf2,0,CACHE_BLOCK_SIZE-(block_offset+to_write_now));
- if((file_offset-block_offset)+CACHE_BLOCK_SIZE>orig_image_size) {
- // Original image is smaller than full cache block
- ret=ReadMorphedImageData(p_buf2,
- file_offset+to_write_now,
- orig_image_size-(file_offset+to_write_now),
- &read);
- if(ret!=TRUE || read!=orig_image_size-(file_offset+to_write_now)) {
- LOG_ERROR("Couldn't read data from virtual image file!\n")
- return -1;
- }
- } else {
- ret=ReadMorphedImageData(p_buf2,
- file_offset+to_write_now,
- CACHE_BLOCK_SIZE-(block_offset+to_write_now),
- &read);
- if(ret!=TRUE || read!=CACHE_BLOCK_SIZE-(block_offset+to_write_now)) {
- LOG_ERROR("Couldn't read data from virtual image file!\n")
- return -1;
- }
- }
- if(fwrite(p_buf2,
- CACHE_BLOCK_SIZE-(block_offset+to_write_now),
- 1,
- glob_xmount.cache.h_old_cache_file)!=1)
- {
- LOG_ERROR("Error while writing %zd bytes "
- "to cache file at offset %" PRIu64 "!\n",
- CACHE_BLOCK_SIZE-(block_offset+to_write_now),
- glob_xmount.cache.p_cache_blkidx[cur_block].off_data+
- block_offset+to_write_now);
- return -1;
- }
- free(p_buf2);
- }
- // All important data for this cache block has been written,
- // flush all buffers and mark cache block as assigned
- fflush(glob_xmount.cache.h_old_cache_file);
-#ifndef __APPLE__
- ioctl(fileno(glob_xmount.cache.h_old_cache_file),BLKFLSBUF,0);
-#endif
- glob_xmount.cache.p_cache_blkidx[cur_block].Assigned=1;
- // Update cache block index entry in cache file
- fseeko(glob_xmount.cache.h_old_cache_file,
- sizeof(ts_CacheFileHeader)+
- (cur_block*sizeof(ts_CacheFileBlockIndex)),
- SEEK_SET);
- if(fwrite(&(glob_xmount.cache.p_cache_blkidx[cur_block]),
- sizeof(ts_CacheFileBlockIndex),
- 1,
- glob_xmount.cache.h_old_cache_file)!=1)
- {
- LOG_ERROR("Couldn't update cache file block index!\n");
- return -1;
- }
- LOG_DEBUG("Updated cache file block index: Number=%" PRIu64
- ", Data offset=%" PRIu64 "\n",
- cur_block,
- glob_xmount.cache.p_cache_blkidx[cur_block].off_data);
- }
- // Flush buffers
- fflush(glob_xmount.cache.h_old_cache_file);
-#ifndef __APPLE__
- ioctl(fileno(glob_xmount.cache.h_old_cache_file),BLKFLSBUF,0);
-#endif
- block_offset=0;
- cur_block++;
- p_write_buf+=to_write_now;
- to_write-=to_write_now;
- file_offset+=to_write_now;
- }
-
- if(to_write_later!=0) {
- // Cache virtual image type specific data preceeding original image data
- switch(glob_xmount.output.VirtImageType) {
- case VirtImageType_DD:
- case VirtImageType_DMG:
- case VirtImageType_VMDK:
- case VirtImageType_VMDKS:
- case VirtImageType_VDI:
- break;
- case VirtImageType_VHD:
- // Micro$oft has choosen to use a footer rather then a header.
- ret=SetVhdFileHeaderData(p_write_buf,
- file_offset-orig_image_size,
- to_write_later);
- if(ret==-1) {
- LOG_ERROR("Couldn't write data to virtual VHD file footer!\n")
- return -1;
- }
- break;
- }
- }
-*/
}
//! Calculates an MD5 hash of the first HASH_AMOUNT bytes of the input image
/*!
* \param p_hash_low Pointer to the lower 64 bit of the hash
* \param p_hash_high Pointer to the higher 64 bit of the hash
* \return TRUE on success, FALSE on error
*/
static int CalculateInputImageHash(uint64_t *p_hash_low,
uint64_t *p_hash_high)
{
char hash[16];
md5_state_t md5_state;
char *p_buf;
int ret;
size_t read_data;
XMOUNT_MALLOC(p_buf,char*,HASH_AMOUNT*sizeof(char));
ret=ReadMorphedImageData(p_buf,0,HASH_AMOUNT,&read_data);
if(ret!=TRUE || read_data==0) {
LOG_ERROR("Couldn't read data from morphed image file!\n")
free(p_buf);
return FALSE;
}
// Calculate MD5 hash
md5_init(&md5_state);
md5_append(&md5_state,(const md5_byte_t*)p_buf,read_data);
md5_finish(&md5_state,(md5_byte_t*)hash);
// Convert MD5 hash into two 64bit integers
*p_hash_low=*((uint64_t*)hash);
*p_hash_high=*((uint64_t*)(hash+8));
free(p_buf);
return TRUE;
}
//! Create info file
/*!
* \return TRUE on success, FALSE on error
*/
static int InitInfoFile() {
int ret;
char *p_buf;
// Start with static input header
XMOUNT_MALLOC(glob_xmount.output.p_info_file,
char*,
strlen(IMAGE_INFO_INPUT_HEADER)+1);
strncpy(glob_xmount.output.p_info_file,
IMAGE_INFO_INPUT_HEADER,
strlen(IMAGE_INFO_INPUT_HEADER)+1);
// Get and add infos from input lib(s)
for(uint64_t i=0;i<glob_xmount.input.images_count;i++) {
ret=glob_xmount.input.pp_images[i]->p_functions->
GetInfofileContent(glob_xmount.input.pp_images[i]->p_handle,(const char**)&p_buf);
if(ret!=0) {
LOG_ERROR("Unable to get info file content for image '%s': %s!\n",
glob_xmount.input.pp_images[i]->pp_files[0],
glob_xmount.input.pp_images[i]->p_functions->
GetErrorMessage(ret));
return FALSE;
}
// Add infos to main buffer and free p_buf
XMOUNT_STRAPP(glob_xmount.output.p_info_file,"\n--> ");
XMOUNT_STRAPP(glob_xmount.output.p_info_file,
glob_xmount.input.pp_images[i]->pp_files[0]);
XMOUNT_STRAPP(glob_xmount.output.p_info_file," <--\n");
if(p_buf!=NULL) {
XMOUNT_STRAPP(glob_xmount.output.p_info_file,p_buf);
glob_xmount.input.pp_images[i]->p_functions->FreeBuffer(p_buf);
} else {
XMOUNT_STRAPP(glob_xmount.output.p_info_file,"None\n");
}
}
// Add static morphing header
XMOUNT_STRAPP(glob_xmount.output.p_info_file,IMAGE_INFO_MORPHING_HEADER);
// Get and add infos from morphing lib
ret=glob_xmount.morphing.p_functions->
GetInfofileContent(glob_xmount.morphing.p_handle,(const char**)&p_buf);
if(ret!=0) {
LOG_ERROR("Unable to get info file content from morphing lib: %s!\n",
glob_xmount.morphing.p_functions->GetErrorMessage(ret));
return FALSE;
}
if(p_buf!=NULL) {
XMOUNT_STRAPP(glob_xmount.output.p_info_file,p_buf);
glob_xmount.morphing.p_functions->FreeBuffer(p_buf);
} else {
XMOUNT_STRAPP(glob_xmount.output.p_info_file,"None\n");
}
return TRUE;
}
//! Create / load cache file to enable virtual write support
/*!
* \return TRUE on success, FALSE on error
*/
static int InitCacheFile() {
uint64_t blockindex_size=0;
uint64_t image_size=0;
uint64_t read=0;
uint8_t is_new_cache_file=0;
teGidaFsError gidafs_ret=eGidaFsError_None;
// Get input image size for later use
if(!GetMorphedImageSize(&image_size)) {
LOG_ERROR("Couldn't get morphed image size!\n")
return FALSE;
}
if(!glob_xmount.cache.overwrite_cache) {
// Try to open an existing cache file or create a new one
gidafs_ret=GidaFsLib_OpenFs(&(glob_xmount.cache.h_cache_file),
glob_xmount.cache.p_cache_file);
if(gidafs_ret!=eGidaFsError_None &&
gidafs_ret!=eGidaFsError_FailedOpeningFsFile)
{
// TODO: Check for old cache file type and inform user it isn't supported
// anymore!
LOG_ERROR("Couldn't open cache file '%s': Error code %u!\n",
glob_xmount.cache.p_cache_file,
gidafs_ret)
return FALSE;
} else if(gidafs_ret==eGidaFsError_FailedOpeningFsFile) {
// Unable to open cache file. It might simply not exist.
LOG_DEBUG("Cache file '%s' does not exist. Creating new one\n",
glob_xmount.cache.p_cache_file)
gidafs_ret=GidaFsLib_NewFs(&(glob_xmount.cache.h_cache_file),
glob_xmount.cache.p_cache_file,
0);
if(gidafs_ret!=eGidaFsError_None) {
// There is really a problem opening/creating the file
LOG_ERROR("Couldn't open cache file '%s': Error code %u!\n",
glob_xmount.cache.p_cache_file,
gidafs_ret)
return FALSE;
}
is_new_cache_file=1;
}
} else {
// Overwrite existing cache file or create a new one
gidafs_ret=GidaFsLib_NewFs(&(glob_xmount.cache.h_cache_file),
glob_xmount.cache.p_cache_file,
0);
if(gidafs_ret!=eGidaFsError_None) {
// There is really a problem opening/creating the file
LOG_ERROR("Couldn't open cache file '%s': Error code %u!\n",
glob_xmount.cache.p_cache_file,
gidafs_ret)
return FALSE;
}
is_new_cache_file=1;
}
#define INITCACHEFILE__CLOSE_CACHE do { \
gidafs_ret=GidaFsLib_CloseFs(&(glob_xmount.cache.h_cache_file)); \
if(gidafs_ret!=eGidaFsError_None) { \
LOG_ERROR("Unable to close cache file: Error code %u: Ignoring!\n", \
gidafs_ret) \
} \
} while(0)
#define INITCACHEFILE__CLOSE_BLOCK_CACHE do { \
gidafs_ret=GidaFsLib_CloseFile(glob_xmount.cache.h_cache_file, \
&(glob_xmount.cache.h_block_cache)); \
if(gidafs_ret!=eGidaFsError_None) { \
LOG_ERROR("Unable to close block cache file: Error code %u: Ignoring!\n", \
gidafs_ret) \
} \
} while(0)
#define INITCACHEFILE__CLOSE_BLOCK_CACHE_INDEX do { \
gidafs_ret=GidaFsLib_CloseFile(glob_xmount.cache.h_cache_file, \
&(glob_xmount.cache.h_block_cache_index)); \
if(gidafs_ret!=eGidaFsError_None) { \
LOG_ERROR("Unable to close block cache index file: Error code %u: " \
"Ignoring!\n", \
gidafs_ret) \
} \
} while(0)
// TODO: Check if cache file uses same block size as we do
if(is_new_cache_file==1) {
// New cache file, create needed xmount subdirectory
gidafs_ret=GidaFsLib_CreateDir(glob_xmount.cache.h_cache_file,
XMOUNT_CACHE_FOLDER,
eGidaFsNodeFlag_RWXu);
if(gidafs_ret!=eGidaFsError_None) {
LOG_ERROR("Unable to create cache file directory '%s': Error code %u!\n",
XMOUNT_CACHE_FOLDER,
gidafs_ret)
INITCACHEFILE__CLOSE_CACHE;
return FALSE;
}
}
// Open / Create block cache file
gidafs_ret=GidaFsLib_OpenFile(glob_xmount.cache.h_cache_file,
XMOUNT_CACHE_BLOCK_FILE,
&(glob_xmount.cache.h_block_cache),
eGidaFsOpenFileFlag_ReadWrite |
(is_new_cache_file==1 ?
eGidaFsOpenFileFlag_CreateAlways : 0),
eGidaFsNodeFlag_Rall |
eGidaFsNodeFlag_Wusr);
if(gidafs_ret!=eGidaFsError_None) {
LOG_ERROR("Unable to open / create block cache file '%s': Error code %u!\n",
XMOUNT_CACHE_BLOCK_FILE,
gidafs_ret)
INITCACHEFILE__CLOSE_CACHE;
return FALSE;
}
// Open / Create block cache index file
gidafs_ret=GidaFsLib_OpenFile(glob_xmount.cache.h_cache_file,
XMOUNT_CACHE_BLOCK_INDEX_FILE,
&(glob_xmount.cache.h_block_cache_index),
eGidaFsOpenFileFlag_ReadWrite |
(is_new_cache_file==1 ?
eGidaFsOpenFileFlag_CreateAlways : 0),
eGidaFsNodeFlag_Rall |
eGidaFsNodeFlag_Wusr);
if(gidafs_ret!=eGidaFsError_None) {
LOG_ERROR("Unable to open / create block cache index file '%s': "
"Error code %u!\n",
XMOUNT_CACHE_BLOCK_FILE,
gidafs_ret)
INITCACHEFILE__CLOSE_BLOCK_CACHE;
INITCACHEFILE__CLOSE_CACHE;
return FALSE;
}
// Calculate how many cache blocks are needed and how big the cache block
// index must be
glob_xmount.cache.block_cache_index_len=image_size/CACHE_BLOCK_SIZE;
if((image_size%CACHE_BLOCK_SIZE)!=0) {
glob_xmount.cache.block_cache_index_len++;
}
LOG_DEBUG("Cache blocks: %u (0x%04X) entries using %zd (0x%08zX) bytes\n",
glob_xmount.cache.block_cache_index_len,
glob_xmount.cache.block_cache_index_len,
glob_xmount.cache.block_cache_index_len*
sizeof(t_CacheFileBlockIndex),
glob_xmount.cache.block_cache_index_len*
sizeof(t_CacheFileBlockIndex))
// Prepare in-memory buffer for block cache index
XMOUNT_MALLOC(glob_xmount.cache.p_block_cache_index,
t_CacheFileBlockIndex*,
glob_xmount.cache.block_cache_index_len*
sizeof(t_CacheFileBlockIndex))
if(is_new_cache_file==1) {
// Generate initial block cache index
for(uint64_t i=0;i<glob_xmount.cache.block_cache_index_len;i++) {
glob_xmount.cache.p_block_cache_index[i]=CACHE_BLOCK_FREE;
}
// Write initial block cache index to cache file
if(UpdateBlockCacheIndex(XMOUNT_BLOCK_CACHE_INVALID_INDEX,0)!=TRUE) {
LOG_ERROR("Unable to generate initial block cache index file '%s': "
"Error code %u!\n",
XMOUNT_CACHE_BLOCK_FILE,
gidafs_ret)
INITCACHEFILE__CLOSE_BLOCK_CACHE_INDEX;
INITCACHEFILE__CLOSE_BLOCK_CACHE;
INITCACHEFILE__CLOSE_CACHE;
XMOUNT_FREE(glob_xmount.cache.p_block_cache_index);
return FALSE;
}
} else {
// Existing cache file, make sure block cache index has correct size
gidafs_ret=GidaFsLib_GetFileSize(glob_xmount.cache.h_cache_file,
glob_xmount.cache.h_block_cache_index,
&blockindex_size);
if(gidafs_ret!=eGidaFsError_None) {
LOG_ERROR("Unable to get block cache index file size: Error code %u!\n",
gidafs_ret)
INITCACHEFILE__CLOSE_BLOCK_CACHE_INDEX;
INITCACHEFILE__CLOSE_BLOCK_CACHE;
INITCACHEFILE__CLOSE_CACHE;
XMOUNT_FREE(glob_xmount.cache.p_block_cache_index);
return FALSE;
}
if(blockindex_size%sizeof(t_CacheFileBlockIndex)!=0 ||
(blockindex_size/sizeof(t_CacheFileBlockIndex))!=
glob_xmount.cache.block_cache_index_len)
{
// TODO: Be more helpfull in error message
LOG_ERROR("Block cache index size is incorrect for given input image!\n")
INITCACHEFILE__CLOSE_BLOCK_CACHE_INDEX;
INITCACHEFILE__CLOSE_BLOCK_CACHE;
INITCACHEFILE__CLOSE_CACHE;
XMOUNT_FREE(glob_xmount.cache.p_block_cache_index);
return FALSE;
}
// Read block cache index into memory
gidafs_ret=GidaFsLib_ReadFile(glob_xmount.cache.h_cache_file,
glob_xmount.cache.h_block_cache_index,
0,
blockindex_size,
glob_xmount.cache.p_block_cache_index,
&read);
if(gidafs_ret!=eGidaFsError_None || read!=blockindex_size) {
LOG_ERROR("Unable to read block cache index: Error code %u!\n",
gidafs_ret);
INITCACHEFILE__CLOSE_BLOCK_CACHE_INDEX;
INITCACHEFILE__CLOSE_BLOCK_CACHE;
INITCACHEFILE__CLOSE_CACHE;
XMOUNT_FREE(glob_xmount.cache.p_block_cache_index);
return FALSE;
}
}
#undef INITCACHEFILE__CLOSE_BLOCK_CACHE_INDEX
#undef INITCACHEFILE__CLOSE_BLOCK_CACHE
#undef INITCACHEFILE__CLOSE_CACHE
return TRUE;
}
//! Update block cache index
/*!
* \return TRUE on success, FALSE on error
*/
static int UpdateBlockCacheIndex(uint64_t index, t_CacheFileBlockIndex value) {
uint64_t update_size=0;
uint64_t written=0;
teGidaFsError gidafs_ret=eGidaFsError_None;
t_CacheFileBlockIndex *p_buf;
if(index!=XMOUNT_BLOCK_CACHE_INVALID_INDEX) {
// Update specific index element in cache file
p_buf=glob_xmount.cache.p_block_cache_index+index;
update_size=sizeof(t_CacheFileBlockIndex);
} else {
// Dump whole block cache index to cache file
p_buf=glob_xmount.cache.p_block_cache_index;
update_size=glob_xmount.cache.block_cache_index_len*
sizeof(t_CacheFileBlockIndex);
}
// Update cache file
gidafs_ret=GidaFsLib_WriteFile(glob_xmount.cache.h_cache_file,
glob_xmount.cache.h_block_cache_index,
0,
update_size,
p_buf,
&written);
if(gidafs_ret!=eGidaFsError_None || written!=update_size) {
LOG_ERROR("Unable to update block cache index file '%s': "
"Error code %u!\n",
XMOUNT_CACHE_BLOCK_INDEX_FILE,
gidafs_ret)
return FALSE;
}
return TRUE;
}
//! Load input / morphing libs
/*!
* \return TRUE on success, FALSE on error
*/
static int LoadLibs() {
DIR *p_dir=NULL;
struct dirent *p_dirent=NULL;
int base_library_path_len=0;
char *p_library_path=NULL;
void *p_libxmount=NULL;
t_LibXmount_Input_GetApiVersion pfun_input_GetApiVersion;
t_LibXmount_Input_GetSupportedFormats pfun_input_GetSupportedFormats;
t_LibXmount_Input_GetFunctions pfun_input_GetFunctions;
t_LibXmount_Morphing_GetApiVersion pfun_morphing_GetApiVersion;
t_LibXmount_Morphing_GetSupportedTypes pfun_morphing_GetSupportedTypes;
t_LibXmount_Morphing_GetFunctions pfun_morphing_GetFunctions;
t_LibXmount_Output_GetApiVersion pfun_output_GetApiVersion;
t_LibXmount_Output_GetSupportedFormats pfun_output_GetSupportedFormats;
t_LibXmount_Output_GetFunctions pfun_output_GetFunctions;
const char *p_supported_formats=NULL;
const char *p_buf;
uint32_t supported_formats_len=0;
pts_InputLib p_input_lib=NULL;
pts_MorphingLib p_morphing_lib=NULL;
pts_OutputLib p_output_lib=NULL;
LOG_DEBUG("Searching for xmount libraries in '%s'.\n",
XMOUNT_LIBRARY_PATH);
// Open lib dir
p_dir=opendir(XMOUNT_LIBRARY_PATH);
if(p_dir==NULL) {
LOG_ERROR("Unable to access xmount library directory '%s'!\n",
XMOUNT_LIBRARY_PATH);
return FALSE;
}
// Construct base library path
base_library_path_len=strlen(XMOUNT_LIBRARY_PATH);
XMOUNT_STRSET(p_library_path,XMOUNT_LIBRARY_PATH);
if(XMOUNT_LIBRARY_PATH[base_library_path_len]!='/') {
base_library_path_len++;
XMOUNT_STRAPP(p_library_path,"/");
}
#define LIBXMOUNT_LOAD(path) { \
p_libxmount=dlopen(path,RTLD_NOW); \
if(p_libxmount==NULL) { \
LOG_ERROR("Unable to load input library '%s': %s!\n", \
path, \
dlerror()); \
continue; \
} \
}
#define LIBXMOUNT_LOAD_SYMBOL(name,pfun) { \
if((pfun=dlsym(p_libxmount,name))==NULL) { \
LOG_ERROR("Unable to load symbol '%s' from library '%s'!\n", \
name, \
p_library_path); \
dlclose(p_libxmount); \
p_libxmount=NULL; \
continue; \
} \
}
// Loop over lib dir
while((p_dirent=readdir(p_dir))!=NULL) {
LOG_DEBUG("Trying to load '%s'\n",p_dirent->d_name);
// Construct full path to found object
p_library_path=realloc(p_library_path,
base_library_path_len+strlen(p_dirent->d_name)+1);
if(p_library_path==NULL) {
LOG_ERROR("Couldn't allocate memory!\n");
exit(1);
}
strcpy(p_library_path+base_library_path_len,p_dirent->d_name);
if(strncmp(p_dirent->d_name,"libxmount_input_",16)==0) {
// Found possible input lib. Try to load it
LIBXMOUNT_LOAD(p_library_path);
// Load library symbols
LIBXMOUNT_LOAD_SYMBOL("LibXmount_Input_GetApiVersion",
pfun_input_GetApiVersion);
// Check library's API version
if(pfun_input_GetApiVersion()!=LIBXMOUNT_INPUT_API_VERSION) {
LOG_DEBUG("Failed! Wrong API version.\n");
LOG_ERROR("Unable to load input library '%s'. Wrong API version\n",
p_library_path);
dlclose(p_libxmount);
continue;
}
LIBXMOUNT_LOAD_SYMBOL("LibXmount_Input_GetSupportedFormats",
pfun_input_GetSupportedFormats);
LIBXMOUNT_LOAD_SYMBOL("LibXmount_Input_GetFunctions",
pfun_input_GetFunctions);
// Construct new entry for our library list
XMOUNT_MALLOC(p_input_lib,pts_InputLib,sizeof(ts_InputLib));
// Initialize lib_functions structure to NULL
memset(&(p_input_lib->lib_functions),
0,
sizeof(ts_LibXmountInputFunctions));
// Set name and handle
XMOUNT_STRSET(p_input_lib->p_name,p_dirent->d_name);
p_input_lib->p_lib=p_libxmount;
// Get and set supported formats
p_supported_formats=pfun_input_GetSupportedFormats();
supported_formats_len=0;
p_buf=p_supported_formats;
while(*p_buf!='\0') {
supported_formats_len+=(strlen(p_buf)+1);
p_buf+=(strlen(p_buf)+1);
}
supported_formats_len++;
XMOUNT_MALLOC(p_input_lib->p_supported_input_types,
char*,
supported_formats_len);
memcpy(p_input_lib->p_supported_input_types,
p_supported_formats,
supported_formats_len);
// Get, set and check lib_functions
pfun_input_GetFunctions(&(p_input_lib->lib_functions));
if(p_input_lib->lib_functions.CreateHandle==NULL ||
p_input_lib->lib_functions.DestroyHandle==NULL ||
p_input_lib->lib_functions.Open==NULL ||
p_input_lib->lib_functions.Close==NULL ||
p_input_lib->lib_functions.Size==NULL ||
p_input_lib->lib_functions.Read==NULL ||
p_input_lib->lib_functions.OptionsHelp==NULL ||
p_input_lib->lib_functions.OptionsParse==NULL ||
p_input_lib->lib_functions.GetInfofileContent==NULL ||
p_input_lib->lib_functions.GetErrorMessage==NULL ||
p_input_lib->lib_functions.FreeBuffer==NULL)
{
LOG_DEBUG("Missing implemention of one or more functions in lib %s!\n",
p_dirent->d_name);
free(p_input_lib->p_supported_input_types);
free(p_input_lib->p_name);
free(p_input_lib);
dlclose(p_libxmount);
continue;
}
// Add entry to the input library list
XMOUNT_REALLOC(glob_xmount.input.pp_libs,
pts_InputLib*,
sizeof(pts_InputLib)*(glob_xmount.input.libs_count+1));
glob_xmount.input.pp_libs[glob_xmount.input.libs_count++]=p_input_lib;
LOG_DEBUG("Input library '%s' loaded successfully\n",p_dirent->d_name);
} if(strncmp(p_dirent->d_name,"libxmount_morphing_",19)==0) {
// Found possible morphing lib. Try to load it
LIBXMOUNT_LOAD(p_library_path);
// Load library symbols
LIBXMOUNT_LOAD_SYMBOL("LibXmount_Morphing_GetApiVersion",
pfun_morphing_GetApiVersion);
// Check library's API version
if(pfun_morphing_GetApiVersion()!=LIBXMOUNT_MORPHING_API_VERSION) {
LOG_DEBUG("Failed! Wrong API version.\n");
LOG_ERROR("Unable to load morphing library '%s'. Wrong API version\n",
p_library_path);
dlclose(p_libxmount);
continue;
}
LIBXMOUNT_LOAD_SYMBOL("LibXmount_Morphing_GetSupportedTypes",
pfun_morphing_GetSupportedTypes);
LIBXMOUNT_LOAD_SYMBOL("LibXmount_Morphing_GetFunctions",
pfun_morphing_GetFunctions);
// Construct new entry for our library list
XMOUNT_MALLOC(p_morphing_lib,pts_MorphingLib,sizeof(ts_MorphingLib));
// Initialize lib_functions structure to NULL
memset(&(p_morphing_lib->lib_functions),
0,
sizeof(ts_LibXmountMorphingFunctions));
// Set name and handle
XMOUNT_STRSET(p_morphing_lib->p_name,p_dirent->d_name);
p_morphing_lib->p_lib=p_libxmount;
// Get and set supported types
p_supported_formats=pfun_morphing_GetSupportedTypes();
supported_formats_len=0;
p_buf=p_supported_formats;
while(*p_buf!='\0') {
supported_formats_len+=(strlen(p_buf)+1);
p_buf+=(strlen(p_buf)+1);
}
supported_formats_len++;
XMOUNT_MALLOC(p_morphing_lib->p_supported_morphing_types,
char*,
supported_formats_len);
memcpy(p_morphing_lib->p_supported_morphing_types,
p_supported_formats,
supported_formats_len);
// Get, set and check lib_functions
pfun_morphing_GetFunctions(&(p_morphing_lib->lib_functions));
if(p_morphing_lib->lib_functions.CreateHandle==NULL ||
p_morphing_lib->lib_functions.DestroyHandle==NULL ||
p_morphing_lib->lib_functions.Morph==NULL ||
p_morphing_lib->lib_functions.Size==NULL ||
p_morphing_lib->lib_functions.Read==NULL ||
p_morphing_lib->lib_functions.OptionsHelp==NULL ||
p_morphing_lib->lib_functions.OptionsParse==NULL ||
p_morphing_lib->lib_functions.GetInfofileContent==NULL ||
p_morphing_lib->lib_functions.GetErrorMessage==NULL ||
p_morphing_lib->lib_functions.FreeBuffer==NULL)
{
LOG_DEBUG("Missing implemention of one or more functions in lib %s!\n",
p_dirent->d_name);
free(p_morphing_lib->p_supported_morphing_types);
free(p_morphing_lib->p_name);
free(p_morphing_lib);
dlclose(p_libxmount);
continue;
}
// Add entry to the input library list
XMOUNT_REALLOC(glob_xmount.morphing.pp_libs,
pts_MorphingLib*,
sizeof(pts_MorphingLib)*
(glob_xmount.morphing.libs_count+1));
glob_xmount.morphing.pp_libs[glob_xmount.morphing.libs_count++]=
p_morphing_lib;
LOG_DEBUG("Morphing library '%s' loaded successfully\n",p_dirent->d_name);
} if(strncmp(p_dirent->d_name,"libxmount_output_",17)==0) {
// Found possible output lib. Try to load it
LIBXMOUNT_LOAD(p_library_path);
// Load library symbols
LIBXMOUNT_LOAD_SYMBOL("LibXmount_Output_GetApiVersion",
pfun_output_GetApiVersion);
// Check library's API version
if(pfun_output_GetApiVersion()!=LIBXMOUNT_OUTPUT_API_VERSION) {
LOG_DEBUG("Failed! Wrong API version.\n");
LOG_ERROR("Unable to load output library '%s'. Wrong API version\n",
p_library_path);
dlclose(p_libxmount);
continue;
}
LIBXMOUNT_LOAD_SYMBOL("LibXmount_Output_GetSupportedFormats",
pfun_output_GetSupportedFormats);
LIBXMOUNT_LOAD_SYMBOL("LibXmount_Output_GetFunctions",
pfun_output_GetFunctions);
// Construct new entry for our library list
XMOUNT_MALLOC(p_output_lib,pts_OutputLib,sizeof(ts_OutputLib));
// Initialize lib_functions structure to NULL
memset(&(p_output_lib->lib_functions),
0,
sizeof(ts_LibXmountOutput_Functions));
// Set name and handle
XMOUNT_STRSET(p_output_lib->p_name,p_dirent->d_name);
p_output_lib->p_lib=p_libxmount;
// Get and set supported types
p_supported_formats=pfun_output_GetSupportedFormats();
supported_formats_len=0;
p_buf=p_supported_formats;
while(*p_buf!='\0') {
supported_formats_len+=(strlen(p_buf)+1);
p_buf+=(strlen(p_buf)+1);
}
supported_formats_len++;
XMOUNT_MALLOC(p_output_lib->p_supported_output_formats,
char*,
supported_formats_len);
memcpy(p_output_lib->p_supported_output_formats,
p_supported_formats,
supported_formats_len);
// Get, set and check lib_functions
pfun_output_GetFunctions(&(p_output_lib->lib_functions));
if(p_output_lib->lib_functions.CreateHandle==NULL ||
p_output_lib->lib_functions.DestroyHandle==NULL ||
p_output_lib->lib_functions.Transform==NULL ||
p_output_lib->lib_functions.Size==NULL ||
p_output_lib->lib_functions.Read==NULL ||
p_output_lib->lib_functions.Write==NULL ||
p_output_lib->lib_functions.OptionsHelp==NULL ||
p_output_lib->lib_functions.OptionsParse==NULL ||
p_output_lib->lib_functions.GetInfofileContent==NULL ||
p_output_lib->lib_functions.GetErrorMessage==NULL ||
p_output_lib->lib_functions.FreeBuffer==NULL)
{
LOG_DEBUG("Missing implemention of one or more functions in lib %s!\n",
p_dirent->d_name);
free(p_output_lib->p_supported_output_formats);
free(p_output_lib->p_name);
free(p_output_lib);
dlclose(p_libxmount);
continue;
}
// Add entry to the input library list
XMOUNT_REALLOC(glob_xmount.output.pp_libs,
pts_OutputLib*,
sizeof(pts_OutputLib)*
(glob_xmount.output.libs_count+1));
glob_xmount.output.pp_libs[glob_xmount.output.libs_count++]=
p_output_lib;
LOG_DEBUG("Output library '%s' loaded successfully\n",p_dirent->d_name);
} else {
LOG_DEBUG("Ignoring '%s'.\n",p_dirent->d_name);
continue;
}
}
#undef LIBXMOUNT_LOAD_SYMBOL
#undef LIBXMOUNT_LOAD
LOG_DEBUG("A total of %u input libs, %u morphing libs and %u output libs "
"were loaded.\n",
glob_xmount.input.libs_count,
glob_xmount.morphing.libs_count,
glob_xmount.output.libs_count);
free(p_library_path);
closedir(p_dir);
return ((glob_xmount.input.libs_count>0 &&
glob_xmount.morphing.libs_count>0 &&
glob_xmount.output.libs_count>0) ? TRUE : FALSE);
}
//! Search an appropriate input lib for specified input type
/*!
* \param p_input_image Input image to search input lib for
* \return TRUE on success, FALSE on error
*/
static int FindInputLib(pts_InputImage p_input_image) {
char *p_buf;
LOG_DEBUG("Trying to find suitable library for input type '%s'.\n",
p_input_image->p_type);
// Loop over all loaded libs
for(uint32_t i=0;i<glob_xmount.input.libs_count;i++) {
LOG_DEBUG("Checking input library %s\n",
glob_xmount.input.pp_libs[i]->p_name);
p_buf=glob_xmount.input.pp_libs[i]->p_supported_input_types;
while(*p_buf!='\0') {
if(strcmp(p_buf,p_input_image->p_type)==0) {
// Library supports input type, set lib functions
LOG_DEBUG("Input library '%s' pretends to handle that input type.\n",
glob_xmount.input.pp_libs[i]->p_name);
p_input_image->p_functions=
&(glob_xmount.input.pp_libs[i]->lib_functions);
return TRUE;
}
p_buf+=(strlen(p_buf)+1);
}
}
LOG_DEBUG("Couldn't find any suitable library.\n");
// No library supporting input type found
return FALSE;
}
//! Search an appropriate morphing lib for the specified morph type
/*!
* \return TRUE on success, FALSE on error
*/
static int FindMorphingLib() {
char *p_buf;
LOG_DEBUG("Trying to find suitable library for morph type '%s'.\n",
glob_xmount.morphing.p_morph_type);
// Loop over all loaded libs
for(uint32_t i=0;i<glob_xmount.morphing.libs_count;i++) {
LOG_DEBUG("Checking morphing library %s\n",
glob_xmount.morphing.pp_libs[i]->p_name);
p_buf=glob_xmount.morphing.pp_libs[i]->p_supported_morphing_types;
while(*p_buf!='\0') {
if(strcmp(p_buf,glob_xmount.morphing.p_morph_type)==0) {
// Library supports morph type, set lib functions
LOG_DEBUG("Morphing library '%s' pretends to handle that morph type.\n",
glob_xmount.morphing.pp_libs[i]->p_name);
glob_xmount.morphing.p_functions=
&(glob_xmount.morphing.pp_libs[i]->lib_functions);
return TRUE;
}
p_buf+=(strlen(p_buf)+1);
}
}
LOG_DEBUG("Couldn't find any suitable library.\n");
// No library supporting morph type found
return FALSE;
}
//! Search an appropriate output lib for the specified output format
/*!
* \return TRUE on success, FALSE on error
*/
static int FindOutputLib() {
char *p_buf;
LOG_DEBUG("Trying to find suitable library for output format '%s'.\n",
glob_xmount.output.p_output_format);
// Loop over all loaded output libs
for(uint32_t i=0;i<glob_xmount.output.libs_count;i++) {
LOG_DEBUG("Checking output library %s\n",
glob_xmount.output.pp_libs[i]->p_name);
p_buf=glob_xmount.output.pp_libs[i]->p_supported_output_formats;
while(*p_buf!='\0') {
if(strcmp(p_buf,glob_xmount.output.p_output_format)==0) {
// Library supports output type, set lib functions
LOG_DEBUG("Output library '%s' pretends to handle that output format.\n",
glob_xmount.output.pp_libs[i]->p_name);
glob_xmount.output.p_functions=
&(glob_xmount.output.pp_libs[i]->lib_functions);
return TRUE;
}
p_buf+=(strlen(p_buf)+1);
}
}
LOG_DEBUG("Couldn't find any suitable library.\n");
// No library supporting output format found
return FALSE;
}
static void InitResources() {
// Input
glob_xmount.input.libs_count=0;
glob_xmount.input.pp_libs=NULL;
glob_xmount.input.lib_params_count=0;
glob_xmount.input.pp_lib_params=NULL;
glob_xmount.input.images_count=0;
glob_xmount.input.pp_images=NULL;
glob_xmount.input.image_offset=0;
glob_xmount.input.image_size_limit=0;
glob_xmount.input.image_hash_lo=0;
glob_xmount.input.image_hash_hi=0;
// Morphing
glob_xmount.morphing.libs_count=0;
glob_xmount.morphing.pp_libs=NULL;
glob_xmount.morphing.p_morph_type=NULL;
glob_xmount.morphing.lib_params_count=0;
glob_xmount.morphing.pp_lib_params=NULL;
glob_xmount.morphing.p_handle=NULL;
glob_xmount.morphing.p_functions=NULL;
glob_xmount.morphing.input_image_functions.ImageCount=
&LibXmount_Morphing_ImageCount;
glob_xmount.morphing.input_image_functions.Size=&LibXmount_Morphing_Size;
glob_xmount.morphing.input_image_functions.Read=&LibXmount_Morphing_Read;
// Cache
glob_xmount.cache.overwrite_cache=FALSE;
glob_xmount.cache.p_cache_file=NULL;
glob_xmount.cache.h_cache_file=NULL;
glob_xmount.cache.h_block_cache=NULL;
glob_xmount.cache.h_block_cache_index=NULL;
glob_xmount.cache.p_block_cache_index=NULL;
glob_xmount.cache.block_cache_index_len=0;
// Output
glob_xmount.output.libs_count=0;
glob_xmount.output.pp_libs=NULL;
glob_xmount.output.p_output_format=NULL;
glob_xmount.output.lib_params_count=0;
glob_xmount.output.pp_lib_params=NULL;
glob_xmount.output.p_handle=NULL;
glob_xmount.output.p_functions=NULL;
glob_xmount.output.input_functions.Size=&LibXmount_Output_Size;
glob_xmount.output.input_functions.Read=&LibXmount_Output_Read;
glob_xmount.output.input_functions.Write=&LibXmount_Output_Write;
glob_xmount.output.image_size=0;
glob_xmount.output.writable=FALSE;
glob_xmount.output.p_virtual_image_path=NULL;
glob_xmount.output.p_info_path=NULL;
glob_xmount.output.p_info_file=NULL;
// Misc data
glob_xmount.debug=FALSE;
glob_xmount.may_set_fuse_allow_other=FALSE;
glob_xmount.fuse_argc=0;
glob_xmount.pp_fuse_argv=NULL;
glob_xmount.p_mountpoint=NULL;
}
/*
* FreeResources
*/
static void FreeResources() {
int ret;
teGidaFsError gidafs_ret=eGidaFsError_None;
LOG_DEBUG("Freeing all resources\n");
// Misc
if(glob_xmount.pp_fuse_argv!=NULL) {
for(int i=0;i<glob_xmount.fuse_argc;i++) free(glob_xmount.pp_fuse_argv[i]);
free(glob_xmount.pp_fuse_argv);
}
if(glob_xmount.p_mountpoint!=NULL) free(glob_xmount.p_mountpoint);
// Output
if(glob_xmount.output.p_functions!=NULL) {
if(glob_xmount.output.p_handle!=NULL) {
// Destroy output handle
ret=glob_xmount.output.p_functions->
DestroyHandle(&(glob_xmount.output.p_handle));
if(ret!=0) {
LOG_ERROR("Unable to destroy output handle: %s!\n",
glob_xmount.output.p_functions->GetErrorMessage(ret));
}
}
}
if(glob_xmount.output.pp_lib_params!=NULL) {
for(uint32_t i=0;i<glob_xmount.output.lib_params_count;i++)
free(glob_xmount.output.pp_lib_params[i]);
free(glob_xmount.output.pp_lib_params);
}
if(glob_xmount.output.p_output_format!=NULL)
free(glob_xmount.output.p_output_format);
if(glob_xmount.output.pp_libs!=NULL) {
// Unload output libs
for(uint32_t i=0;i<glob_xmount.output.libs_count;i++) {
if(glob_xmount.output.pp_libs[i]==NULL) continue;
if(glob_xmount.output.pp_libs[i]->p_supported_output_formats!=NULL)
free(glob_xmount.output.pp_libs[i]->p_supported_output_formats);
if(glob_xmount.output.pp_libs[i]->p_lib!=NULL)
dlclose(glob_xmount.output.pp_libs[i]->p_lib);
if(glob_xmount.output.pp_libs[i]->p_name!=NULL)
free(glob_xmount.output.pp_libs[i]->p_name);
free(glob_xmount.output.pp_libs[i]);
}
free(glob_xmount.output.pp_libs);
}
if(glob_xmount.output.p_info_path!=NULL)
free(glob_xmount.output.p_info_path);
if(glob_xmount.output.p_info_file!=NULL)
free(glob_xmount.output.p_info_file);
if(glob_xmount.output.p_virtual_image_path!=NULL)
free(glob_xmount.output.p_virtual_image_path);
// Cache
if(glob_xmount.cache.h_cache_file!=NULL) {
if(glob_xmount.cache.p_block_cache_index!=NULL)
free(glob_xmount.cache.p_block_cache_index);
if(glob_xmount.cache.h_block_cache_index!=NULL) {
gidafs_ret=GidaFsLib_CloseFile(glob_xmount.cache.h_cache_file,
&(glob_xmount.cache.h_block_cache_index));
if(gidafs_ret!=eGidaFsError_None) {
LOG_ERROR("Unable to close block cache index file: Error code %u: "
"Ignoring!\n",
gidafs_ret)
}
}
if(glob_xmount.cache.h_block_cache!=NULL) {
gidafs_ret=GidaFsLib_CloseFile(glob_xmount.cache.h_cache_file,
&(glob_xmount.cache.h_block_cache));
if(gidafs_ret!=eGidaFsError_None) {
LOG_ERROR("Unable to close block cache file: Error code %u: "
"Ignoring!\n",
gidafs_ret)
}
}
gidafs_ret=GidaFsLib_CloseFs(&(glob_xmount.cache.h_cache_file));
if(gidafs_ret!=eGidaFsError_None) {
LOG_ERROR("Unable to close cache file: Error code %u: Ignoring!\n",
gidafs_ret)
}
}
if(glob_xmount.cache.p_cache_file!=NULL) free(glob_xmount.cache.p_cache_file);
// Morphing
if(glob_xmount.morphing.p_functions!=NULL) {
if(glob_xmount.morphing.p_handle!=NULL) {
// Destroy morphing handle
ret=glob_xmount.morphing.p_functions->
DestroyHandle(&(glob_xmount.morphing.p_handle));
if(ret!=0) {
LOG_ERROR("Unable to destroy morphing handle: %s!\n",
glob_xmount.morphing.p_functions->GetErrorMessage(ret));
}
}
}
if(glob_xmount.morphing.pp_lib_params!=NULL) {
for(uint32_t i=0;i<glob_xmount.morphing.lib_params_count;i++)
free(glob_xmount.morphing.pp_lib_params[i]);
free(glob_xmount.morphing.pp_lib_params);
}
if(glob_xmount.morphing.p_morph_type!=NULL)
free(glob_xmount.morphing.p_morph_type);
if(glob_xmount.morphing.pp_libs!=NULL) {
// Unload morphing libs
for(uint32_t i=0;i<glob_xmount.morphing.libs_count;i++) {
if(glob_xmount.morphing.pp_libs[i]==NULL) continue;
if(glob_xmount.morphing.pp_libs[i]->p_supported_morphing_types!=NULL)
free(glob_xmount.morphing.pp_libs[i]->p_supported_morphing_types);
if(glob_xmount.morphing.pp_libs[i]->p_lib!=NULL)
dlclose(glob_xmount.morphing.pp_libs[i]->p_lib);
if(glob_xmount.morphing.pp_libs[i]->p_name!=NULL)
free(glob_xmount.morphing.pp_libs[i]->p_name);
free(glob_xmount.morphing.pp_libs[i]);
}
free(glob_xmount.morphing.pp_libs);
}
// Input
if(glob_xmount.input.pp_images!=NULL) {
// Close all input images
for(uint64_t i=0;i<glob_xmount.input.images_count;i++) {
if(glob_xmount.input.pp_images[i]==NULL) continue;
if(glob_xmount.input.pp_images[i]->p_functions!=NULL) {
if(glob_xmount.input.pp_images[i]->p_handle!=NULL) {
ret=glob_xmount.input.pp_images[i]->p_functions->
Close(glob_xmount.input.pp_images[i]->p_handle);
if(ret!=0) {
LOG_ERROR("Unable to close input image: %s\n",
glob_xmount.input.pp_images[i]->p_functions->
GetErrorMessage(ret));
}
ret=glob_xmount.input.pp_images[i]->p_functions->
DestroyHandle(&(glob_xmount.input.pp_images[i]->p_handle));
if(ret!=0) {
LOG_ERROR("Unable to destroy input image handle: %s\n",
glob_xmount.input.pp_images[i]->p_functions->
GetErrorMessage(ret));
}
}
}
if(glob_xmount.input.pp_images[i]->pp_files!=NULL) {
for(uint64_t ii=0;ii<glob_xmount.input.pp_images[i]->files_count;ii++) {
if(glob_xmount.input.pp_images[i]->pp_files[ii]!=NULL)
free(glob_xmount.input.pp_images[i]->pp_files[ii]);
}
free(glob_xmount.input.pp_images[i]->pp_files);
}
if(glob_xmount.input.pp_images[i]->p_type!=NULL)
free(glob_xmount.input.pp_images[i]->p_type);
free(glob_xmount.input.pp_images[i]);
}
free(glob_xmount.input.pp_images);
}
if(glob_xmount.input.pp_lib_params!=NULL) {
for(uint32_t i=0;i<glob_xmount.input.lib_params_count;i++)
free(glob_xmount.input.pp_lib_params[i]);
free(glob_xmount.input.pp_lib_params);
}
if(glob_xmount.input.pp_libs!=NULL) {
// Unload all input libs
for(uint32_t i=0;i<glob_xmount.input.libs_count;i++) {
if(glob_xmount.input.pp_libs[i]->p_supported_input_types!=NULL)
free(glob_xmount.input.pp_libs[i]->p_supported_input_types);
if(glob_xmount.input.pp_libs[i]->p_lib!=NULL)
dlclose(glob_xmount.input.pp_libs[i]->p_lib);
if(glob_xmount.input.pp_libs[i]->p_name!=NULL)
free(glob_xmount.input.pp_libs[i]->p_name);
free(glob_xmount.input.pp_libs[i]);
}
free(glob_xmount.input.pp_libs);
}
// Before we return, initialize everything in case ReleaseResources would be
// called again.
InitResources();
}
//! Function to split given library options
static int SplitLibraryParameters(char *p_params,
uint32_t *p_ret_opts_count,
pts_LibXmountOptions **ppp_ret_opt)
{
pts_LibXmountOptions p_opts=NULL;
pts_LibXmountOptions *pp_opts=NULL;
uint32_t params_len;
uint32_t opts_count=0;
uint32_t sep_pos=0;
char *p_buf=p_params;
if(p_params==NULL) return FALSE;
// Get params length
params_len=strlen(p_params);
// Return if no params specified
if(params_len==0) {
*ppp_ret_opt=NULL;
p_ret_opts_count=0;
return TRUE;
}
// Split params
while(*p_buf!='\0') {
XMOUNT_MALLOC(p_opts,pts_LibXmountOptions,sizeof(ts_LibXmountOptions));
p_opts->valid=0;
#define FREE_PP_OPTS() { \
if(pp_opts!=NULL) { \
for(uint32_t i=0;i<opts_count;i++) free(pp_opts[i]); \
free(pp_opts); \
} \
}
// Search next assignment operator
sep_pos=0;
while(p_buf[sep_pos]!='\0' && p_buf[sep_pos]!='=') sep_pos++;
if(sep_pos==0 || p_buf[sep_pos]=='\0') {
LOG_ERROR("Library parameter '%s' is missing an assignment operator!\n",
p_buf);
free(p_opts);
FREE_PP_OPTS();
return FALSE;
}
// Save option key
XMOUNT_STRNSET(p_opts->p_key,p_buf,sep_pos);
p_buf+=(sep_pos+1);
// Search next separator
sep_pos=0;
while(p_buf[sep_pos]!='\0' && p_buf[sep_pos]!=',') sep_pos++;
if(sep_pos==0) {
LOG_ERROR("Library parameter '%s' is not of format key=value!\n",
p_opts->p_key);
free(p_opts->p_key);
free(p_opts);
FREE_PP_OPTS();
return FALSE;
}
// Save option value
XMOUNT_STRNSET(p_opts->p_value,p_buf,sep_pos);
p_buf+=sep_pos;
LOG_DEBUG("Extracted library option: '%s' = '%s'\n",
p_opts->p_key,
p_opts->p_value);
#undef FREE_PP_OPTS
// Add current option to return array
XMOUNT_REALLOC(pp_opts,
pts_LibXmountOptions*,
sizeof(pts_LibXmountOptions)*(opts_count+1));
pp_opts[opts_count++]=p_opts;
// If we're not at the end of p_params, skip over separator for next run
if(*p_buf!='\0') p_buf++;
}
LOG_DEBUG("Extracted a total of %" PRIu32 " library options\n",opts_count);
*p_ret_opts_count=opts_count;
*ppp_ret_opt=pp_opts;
return TRUE;
}
/*******************************************************************************
* LibXmount_Morphing function implementation
******************************************************************************/
//! Function to get the amount of input images
/*!
* \param p_count Count of input images
* \return 0 on success
*/
static int LibXmount_Morphing_ImageCount(uint64_t *p_count) {
*p_count=glob_xmount.input.images_count;
return 0;
}
//! Function to get the size of the morphed data
/*!
* \param image Image number
* \param p_size Pointer to store input image's size to
* \return 0 on success
*/
static int LibXmount_Morphing_Size(uint64_t image, uint64_t *p_size) {
if(image>=glob_xmount.input.images_count) return -1;
*p_size=glob_xmount.input.pp_images[image]->size;
return 0;
}
//! Function to read data from input image
/*!
* \param image Image number
* \param p_buf Buffer to store read data to
* \param offset Position at which to start reading
* \param count Amount of bytes to read
* \param p_read Number of read bytes on success
* \return 0 on success or negated error code on error
*/
static int LibXmount_Morphing_Read(uint64_t image,
char *p_buf,
off_t offset,
size_t count,
size_t *p_read)
{
if(image>=glob_xmount.input.images_count) return -EIO;
return ReadInputImageData(glob_xmount.input.pp_images[image],
p_buf,
offset,
count,
p_read);
}
/*******************************************************************************
* LibXmount_Output function implementation
******************************************************************************/
//! Function to get the size of the morphed image
/*!
* \param p_size Pointer to store morphed image's size to
* \return 0 on success
*/
static int LibXmount_Output_Size(uint64_t *p_size) {
int ret=0;
ret=GetMorphedImageSize(p_size);
return ret==TRUE ? 0 : ret;
}
//! Function to read data from the morphed image
/*!
* \param p_buf Buffer to store read data to
* \param offset Position at which to start reading
* \param count Amount of bytes to read
* \param p_read Number of read bytes on success
* \return 0 on success or negated error code on error
*/
static int LibXmount_Output_Read(char *p_buf,
off_t offset,
size_t count,
size_t *p_read)
{
return ReadMorphedImageData(p_buf,offset,count,p_read);
}
//! Function to write data to the morphed image
/*!
* \param p_buf Buffer with data to write
* \param offset Position at which to start writing
* \param count Amount of bytes to write
* \param p_written Number of written bytes on success
* \return 0 on success or negated error code on error
*/
static int LibXmount_Output_Write(char *p_buf,
off_t offset,
size_t count,
size_t *p_written)
{
- return WriteMorphedImageData(p_buf,offset,count,p_read);
-}
-
-/*******************************************************************************
- * FUSE function implementation
- ******************************************************************************/
-//! FUSE access implementation
-/*!
- * \param p_path Path of file to get attributes from
- * \param perm Requested permissisons
- * \return 0 on success, negated error code on error
- */
-/*
-static int FuseAccess(const char *path, int perm) {
- // TODO: Implement propper file permission handling
- // http://www.cs.cf.ac.uk/Dave/C/node20.html
- // Values for the second argument to access.
- // These may be OR'd together.
- //#define R_OK 4 // Test for read permission.
- //#define W_OK 2 // Test for write permission.
- //#define X_OK 1 // Test for execute permission.
- //#define F_OK 0 // Test for existence.
- return 0;
-}
-*/
-
-//! FUSE getattr implementation
-/*!
- * \param p_path Path of file to get attributes from
- * \param p_stat Pointer to stat structure to save attributes to
- * \return 0 on success, negated error code on error
- */
-static int FuseGetAttr(const char *p_path, struct stat *p_stat) {
- memset(p_stat,0,sizeof(struct stat));
- if(strcmp(p_path,"/")==0) {
- // Attributes of mountpoint
- p_stat->st_mode=S_IFDIR | 0777;
- p_stat->st_nlink=2;
- } else if(strcmp(p_path,glob_xmount.output.p_virtual_image_path)==0) {
- // Attributes of virtual image
- if(!glob_xmount.output.writable) p_stat->st_mode=S_IFREG | 0444;
- else p_stat->st_mode=S_IFREG | 0666;
- p_stat->st_nlink=1;
- // Get output image file size
- if(!GetOutputImageSize((uint64_t*)&(p_stat->st_size))) {
- LOG_ERROR("Couldn't get image size!\n");
- return -ENOENT;
- }
- // Make sure virtual image seems to be fully allocated (not sparse file).
- p_stat->st_blocks=p_stat->st_size/512;
- if(p_stat->st_size%512!=0) p_stat->st_blocks++;
- } else if(strcmp(p_path,glob_xmount.output.p_info_path)==0) {
- // Attributes of virtual image info file
- p_stat->st_mode=S_IFREG | 0444;
- p_stat->st_nlink=1;
- // Get virtual image info file size
- if(glob_xmount.output.p_info_file!=NULL) {
- p_stat->st_size=strlen(glob_xmount.output.p_info_file);
- } else p_stat->st_size=0;
- } else return -ENOENT;
- // Set uid and gid of all files to uid and gid of current process
- p_stat->st_uid=getuid();
- p_stat->st_gid=getgid();
- return 0;
-}
-
-//! FUSE mkdir implementation
-/*!
- * \param p_path Directory path
- * \param mode Directory permissions
- * \return 0 on success, negated error code on error
- */
-static int FuseMkDir(const char *p_path, mode_t mode) {
- // TODO: Implement
- LOG_ERROR("Attempt to create directory \"%s\" "
- "on read-only filesystem!\n",p_path)
- return -1;
-}
-
-//! FUSE create implementation.
-/*!
- * \param p_path File to create
- * \param mode File mode
- * \param dev ??? but not used
- * \return 0 on success, negated error code on error
- */
-static int FuseMkNod(const char *p_path, mode_t mode, dev_t dev) {
- // TODO: Implement
- LOG_ERROR("Attempt to create illegal file \"%s\"\n",p_path)
- return -1;
-}
-
-//! FUSE readdir implementation
-/*!
- * \param p_path Path from where files should be listed
- * \param p_buf Buffer to write file entrys to
- * \param filler Function to write dir entrys to buffer
- * \param offset ??? but not used
- * \param p_fi File info struct
- * \return 0 on success, negated error code on error
- */
-static int FuseReadDir(const char *p_path,
- void *p_buf,
- fuse_fill_dir_t filler,
- off_t offset,
- struct fuse_file_info *p_fi)
-{
- // Ignore some params
- (void)offset;
- (void)p_fi;
-
- if(strcmp(p_path,"/")==0) {
- // Add std . and .. entrys
- filler(p_buf,".",NULL,0);
- filler(p_buf,"..",NULL,0);
- // Add our virtual files (p+1 to ignore starting "/")
- filler(p_buf,glob_xmount.output.p_virtual_image_path+1,NULL,0);
- filler(p_buf,glob_xmount.output.p_info_path+1,NULL,0);
- } else return -ENOENT;
-
- return 0;
-}
-
-//! FUSE open implementation
-/*!
- * \param p_path Path to file to open
- * \param p_fi File info struct
- * \return 0 on success, negated error code on error
- */
-static int FuseOpen(const char *p_path, struct fuse_file_info *p_fi) {
-
-#define CHECK_OPEN_PERMS() { \
- if(!glob_xmount.output.writable && (p_fi->flags & 3)!=O_RDONLY) { \
- LOG_DEBUG("Attempt to open the read-only file \"%s\" for writing.\n", \
- p_path) \
- return -EACCES; \
- } \
- return 0; \
-}
-
- if(strcmp(p_path,glob_xmount.output.p_virtual_image_path)==0 ||
- strcmp(p_path,glob_xmount.output.p_info_path)==0)
- {
- CHECK_OPEN_PERMS();
- }
-
-#undef CHECK_OPEN_PERMS
-
- LOG_DEBUG("Attempt to open inexistant file \"%s\".\n",p_path);
- return -ENOENT;
-}
-
-//! FUSE read implementation
-/*!
- * \param p_path Path (relative to mount folder) of file to read data from
- * \param p_buf Pre-allocated buffer where read data should be written to
- * \param size Number of bytes to read
- * \param offset Offset to start reading at
- * \param p_fi: File info struct
- * \return Read bytes on success, negated error code on error
- */
-static int FuseRead(const char *p_path,
- char *p_buf,
- size_t size,
- off_t offset,
- struct fuse_file_info *p_fi)
-{
- (void)p_fi;
-
- int ret;
- uint64_t len;
-
-#define READ_MEM_FILE(filebuf,filesize,filetypestr,mutex) { \
- len=filesize; \
- if(offset<len) { \
- if(offset+size>len) { \
- LOG_DEBUG("Attempt to read past EOF of virtual " filetypestr " file\n"); \
- LOG_DEBUG("Adjusting read size from %u to %u\n",size,len-offset); \
- size=len-offset; \
- } \
- pthread_mutex_lock(&mutex); \
- memcpy(p_buf,filebuf+offset,size); \
- pthread_mutex_unlock(&mutex); \
- LOG_DEBUG("Read %" PRIu64 " bytes at offset %" PRIu64 \
- " from virtual " filetypestr " file\n",size,offset); \
- ret=size; \
- } else { \
- LOG_DEBUG("Attempt to read behind EOF of virtual " filetypestr " file\n"); \
- ret=0; \
- } \
-}
-
- if(strcmp(p_path,glob_xmount.output.p_virtual_image_path)==0) {
- // Read data from virtual output file
- // Wait for other threads to end reading/writing data
- pthread_mutex_lock(&(glob_xmount.mutex_image_rw));
- // Get requested data
- if((ret=ReadOutputImageData(p_buf,offset,size))<0) {
- LOG_ERROR("Couldn't read data from virtual image file!\n")
- }
- // Allow other threads to read/write data again
- pthread_mutex_unlock(&(glob_xmount.mutex_image_rw));
- } else if(strcmp(p_path,glob_xmount.output.p_info_path)==0) {
- // Read data from virtual info file
- READ_MEM_FILE(glob_xmount.output.p_info_file,
- strlen(glob_xmount.output.p_info_file),
- "info",
- glob_xmount.mutex_info_read);
- } else {
- // Attempt to read non existant file
- LOG_DEBUG("Attempt to read from non existant file \"%s\"\n",p_path)
- ret=-ENOENT;
- }
-
-#undef READ_MEM_FILE
-
- // TODO: Return size of read data!!!!!
- return ret;
-}
-
-//! FUSE rename implementation
-/*!
- * \param p_path File to rename
- * \param p_npath New filename
- * \return 0 on error, negated error code on error
- */
-static int FuseRename(const char *p_path, const char *p_npath) {
- // TODO: Implement
- return -ENOENT;
-}
-
-//! FUSE rmdir implementation
-/*!
- * \param p_path Directory to delete
- * \return 0 on success, negated error code on error
- */
-static int FuseRmDir(const char *p_path) {
- // TODO: Implement
- return -1;
-}
-
-//! FUSE unlink implementation
-/*!
- * \param p_path File to delete
- * \return 0 on success, negated error code on error
- */
-static int FuseUnlink(const char *p_path) {
- // TODO: Implement
- return -1;
-}
-
-//! FUSE statfs implementation
-/*!
- * \param p_path Get stats for fs that the specified file resides in
- * \param stats Stats
- * \return 0 on success, negated error code on error
- */
-/*
-static int FuseStatFs(const char *p_path, struct statvfs *stats) {
- struct statvfs CacheFileFsStats;
- int ret;
-
- if(glob_xmount.writable==TRUE) {
- // If write support is enabled, return stats of fs upon which cache file
- // resides in
- if((ret=statvfs(glob_xmount.p_cache_file,&CacheFileFsStats))==0) {
- memcpy(stats,&CacheFileFsStats,sizeof(struct statvfs));
- return 0;
- } else {
- LOG_ERROR("Couldn't get stats for fs upon which resides \"%s\"\n",
- glob_xmount.p_cache_file)
- return ret;
- }
- } else {
- // TODO: Return read only
- return 0;
- }
-}
-*/
-
-// FUSE write implementation
-/*!
- * \param p_buf Buffer containing data to write
- * \param size Number of bytes to write
- * \param offset Offset to start writing at
- * \param p_fi: File info struct
- *
- * Returns:
- * Written bytes on success, negated error code on error
- */
-static int FuseWrite(const char *p_path,
- const char *p_buf,
- size_t size,
- off_t offset,
- struct fuse_file_info *p_fi)
-{
- (void)p_fi;
-
- uint64_t len;
-
- if(strcmp(p_path,glob_xmount.output.p_virtual_image_path)==0) {
- // Wait for other threads to end reading/writing data
- pthread_mutex_lock(&(glob_xmount.mutex_image_rw));
-
- // Get output image file size
- if(!GetOutputImageSize(&len)) {
- LOG_ERROR("Couldn't get virtual image size!\n")
- pthread_mutex_unlock(&(glob_xmount.mutex_image_rw));
- return 0;
- }
- if(offset<len) {
- if(offset+size>len) size=len-offset;
- if(WriteOutputImageData(p_buf,offset,size)!=size) {
- LOG_ERROR("Couldn't write data to virtual image file!\n")
- pthread_mutex_unlock(&(glob_xmount.mutex_image_rw));
- return 0;
- }
- } else {
- LOG_DEBUG("Attempt to write past EOF of virtual image file\n")
- pthread_mutex_unlock(&(glob_xmount.mutex_image_rw));
- return 0;
- }
-
- // Allow other threads to read/write data again
- pthread_mutex_unlock(&(glob_xmount.mutex_image_rw));
- } else if(strcmp(p_path,glob_xmount.output.p_info_path)==0) {
- // Attempt to write data to read only image info file
- LOG_DEBUG("Attempt to write data to virtual info file\n");
- return -ENOENT;
- } else {
- // Attempt to write to non existant file
- LOG_DEBUG("Attempt to write to the non existant file \"%s\"\n",p_path)
- return -ENOENT;
- }
-
- return size;
+ return WriteMorphedImageData(p_buf,offset,count,p_written);
}
/*******************************************************************************
* Main
******************************************************************************/
int main(int argc, char *argv[]) {
struct stat file_stat;
int ret;
int fuse_ret;
char *p_err_msg;
// Set implemented FUSE functions
struct fuse_operations xmount_operations = {
//.access=FuseAccess,
- .getattr=FuseGetAttr,
- .mkdir=FuseMkDir,
- .mknod=FuseMkNod,
- .open=FuseOpen,
- .readdir=FuseReadDir,
- .read=FuseRead,
- .rename=FuseRename,
- .rmdir=FuseRmDir,
+ .getattr=Xmount_FuseGetAttr,
+ .mkdir=Xmount_FuseMkDir,
+ .mknod=Xmount_FuseMkNod,
+ .open=Xmount_FuseOpen,
+ .readdir=Xmount_FuseReadDir,
+ .read=Xmount_FuseRead,
+ .rename=Xmount_FuseRename,
+ .rmdir=Xmount_FuseRmDir,
//.statfs=FuseStatFs,
- .unlink=FuseUnlink,
- .write=FuseWrite
+ .unlink=Xmount_FuseUnlink,
+ .write=Xmount_FuseWrite
};
// Disable std output / input buffering
setbuf(stdout,NULL);
setbuf(stderr,NULL);
// Init glob_xmount
InitResources();
// Load input and morphing libs
if(!LoadLibs()) {
LOG_ERROR("Unable to load any libraries!\n")
return 1;
}
// Check FUSE settings
CheckFuseSettings();
// Parse command line options
if(ParseCmdLine(argc,argv)!=TRUE) {
PrintUsage(argv[0]);
FreeResources();
return 1;
}
// Check command line options
if(glob_xmount.input.images_count==0) {
LOG_ERROR("No --in command line option specified!\n")
PrintUsage(argv[0]);
FreeResources();
return 1;
}
if(glob_xmount.fuse_argc<2) {
LOG_ERROR("Couldn't parse command line options!\n")
PrintUsage(argv[0]);
FreeResources();
return 1;
}
if(glob_xmount.morphing.p_morph_type==NULL) {
XMOUNT_STRSET(glob_xmount.morphing.p_morph_type,"combine");
}
// Check if mountpoint is a valid dir
if(stat(glob_xmount.p_mountpoint,&file_stat)!=0) {
LOG_ERROR("Unable to stat mount point '%s'!\n",glob_xmount.p_mountpoint);
PrintUsage(argv[0]);
FreeResources();
return 1;
}
if(!S_ISDIR(file_stat.st_mode)) {
LOG_ERROR("Mount point '%s' is not a directory!\n",
glob_xmount.p_mountpoint);
PrintUsage(argv[0]);
FreeResources();
return 1;
}
if(glob_xmount.debug==TRUE) {
LOG_DEBUG("Options passed to FUSE: ")
for(int i=0;i<glob_xmount.fuse_argc;i++) {
printf("%s ",glob_xmount.pp_fuse_argv[i]);
}
printf("\n");
}
// Init mutexes
pthread_mutex_init(&(glob_xmount.mutex_image_rw),NULL);
pthread_mutex_init(&(glob_xmount.mutex_info_read),NULL);
// Load input images
for(uint64_t i=0;i<glob_xmount.input.images_count;i++) {
if(glob_xmount.debug==TRUE) {
if(glob_xmount.input.pp_images[i]->files_count==1) {
LOG_DEBUG("Loading image file \"%s\"...\n",
glob_xmount.input.pp_images[i]->pp_files[0])
} else {
LOG_DEBUG("Loading image files \"%s .. %s\"...\n",
glob_xmount.input.pp_images[i]->pp_files[0],
glob_xmount.input.pp_images[i]->
pp_files[glob_xmount.input.pp_images[i]->files_count-1])
}
}
// Find input lib
if(!FindInputLib(glob_xmount.input.pp_images[i])) {
LOG_ERROR("Unknown input image type '%s' for input image '%s'!\n",
glob_xmount.input.pp_images[i]->p_type,
glob_xmount.input.pp_images[i]->pp_files[0])
PrintUsage(argv[0]);
FreeResources();
return 1;
}
// Init input image handle
ret=glob_xmount.input.pp_images[i]->p_functions->
CreateHandle(&(glob_xmount.input.pp_images[i]->p_handle),
glob_xmount.input.pp_images[i]->p_type,
glob_xmount.debug);
if(ret!=0) {
LOG_ERROR("Unable to init input handle for input image '%s': %s!\n",
glob_xmount.input.pp_images[i]->pp_files[0],
glob_xmount.input.pp_images[i]->p_functions->
GetErrorMessage(ret));
FreeResources();
return 1;
}
// Parse input lib specific options
if(glob_xmount.input.pp_lib_params!=NULL) {
ret=glob_xmount.input.pp_images[i]->p_functions->
OptionsParse(glob_xmount.input.pp_images[i]->p_handle,
glob_xmount.input.lib_params_count,
glob_xmount.input.pp_lib_params,
(const char**)&p_err_msg);
if(ret!=0) {
if(p_err_msg!=NULL) {
LOG_ERROR("Unable to parse input library specific options for image "
"'%s': %s: %s!\n",
glob_xmount.input.pp_images[i]->pp_files[0],
glob_xmount.input.pp_images[i]->p_functions->
GetErrorMessage(ret),
p_err_msg);
glob_xmount.input.pp_images[i]->p_functions->FreeBuffer(p_err_msg);
FreeResources();
return 1;
} else {
LOG_ERROR("Unable to parse input library specific options for image "
"'%s': %s!\n",
glob_xmount.input.pp_images[i]->pp_files[0],
glob_xmount.input.pp_images[i]->p_functions->
GetErrorMessage(ret));
FreeResources();
return 1;
}
}
}
// Open input image
ret=
glob_xmount.input.pp_images[i]->
p_functions->
Open(glob_xmount.input.pp_images[i]->p_handle,
(const char**)(glob_xmount.input.pp_images[i]->pp_files),
glob_xmount.input.pp_images[i]->files_count);
if(ret!=0) {
LOG_ERROR("Unable to open input image file '%s': %s!\n",
glob_xmount.input.pp_images[i]->pp_files[0],
glob_xmount.input.pp_images[i]->p_functions->
GetErrorMessage(ret));
FreeResources();
return 1;
}
// Determine input image size
ret=glob_xmount.input.pp_images[i]->
p_functions->
Size(glob_xmount.input.pp_images[i]->p_handle,
&(glob_xmount.input.pp_images[i]->size));
if(ret!=0) {
LOG_ERROR("Unable to determine size of input image '%s': %s!\n",
glob_xmount.input.pp_images[i]->pp_files[0],
glob_xmount.input.pp_images[i]->
p_functions->GetErrorMessage(ret));
FreeResources();
return 1;
}
// If an offset was specified, check it against offset and change size
if(glob_xmount.input.image_offset!=0) {
if(glob_xmount.input.image_offset>glob_xmount.input.pp_images[i]->size) {
LOG_ERROR("The specified offset is larger than the size of the input "
"image '%s'! (%" PRIu64 " > %" PRIu64 ")\n",
glob_xmount.input.pp_images[i]->pp_files[0],
glob_xmount.input.image_offset,
glob_xmount.input.pp_images[i]->size);
FreeResources();
return 1;
}
glob_xmount.input.pp_images[i]->size-=glob_xmount.input.image_offset;
}
// If a size limit was specified, check it and change size
if(glob_xmount.input.image_size_limit!=0) {
if(glob_xmount.input.pp_images[i]->size<
glob_xmount.input.image_size_limit)
{
LOG_ERROR("The specified size limit is larger than the size of the "
"input image '%s'! (%" PRIu64 " > %" PRIu64 ")\n",
glob_xmount.input.pp_images[i]->pp_files[0],
glob_xmount.input.image_size_limit,
glob_xmount.input.pp_images[i]->size);
FreeResources();
return 1;
}
glob_xmount.input.pp_images[i]->size=glob_xmount.input.image_size_limit;
}
LOG_DEBUG("Input image loaded successfully\n")
}
// Find morphing lib
if(FindMorphingLib()!=TRUE) {
LOG_ERROR("Unable to find a library supporting the morphing type '%s'!\n",
glob_xmount.morphing.p_morph_type);
FreeResources();
return 1;
}
// Init morphing
ret=glob_xmount.morphing.p_functions->
CreateHandle(&glob_xmount.morphing.p_handle,
glob_xmount.morphing.p_morph_type,
glob_xmount.debug);
if(ret!=0) {
LOG_ERROR("Unable to create morphing handle: %s!\n",
glob_xmount.morphing.p_functions->GetErrorMessage(ret));
FreeResources();
return 1;
}
// Parse morphing lib specific options
if(glob_xmount.morphing.pp_lib_params!=NULL) {
p_err_msg=NULL;
ret=glob_xmount.morphing.p_functions->
OptionsParse(glob_xmount.morphing.p_handle,
glob_xmount.morphing.lib_params_count,
glob_xmount.morphing.pp_lib_params,
(const char**)&p_err_msg);
if(ret!=0) {
if(p_err_msg!=NULL) {
LOG_ERROR("Unable to parse morphing library specific options: %s: %s!\n",
glob_xmount.morphing.p_functions->GetErrorMessage(ret),
p_err_msg);
glob_xmount.morphing.p_functions->FreeBuffer(p_err_msg);
FreeResources();
return 1;
} else {
LOG_ERROR("Unable to parse morphing library specific options: %s!\n",
glob_xmount.morphing.p_functions->GetErrorMessage(ret));
FreeResources();
return 1;
}
}
}
// Morph image
ret=glob_xmount.morphing.p_functions->
Morph(glob_xmount.morphing.p_handle,
&(glob_xmount.morphing.input_image_functions));
if(ret!=0) {
LOG_ERROR("Unable to start morphing: %s!\n",
glob_xmount.morphing.p_functions->GetErrorMessage(ret));
FreeResources();
return 1;
}
// Init random generator
srand(time(NULL));
// Calculate partial MD5 hash of input image file
if(CalculateInputImageHash(&(glob_xmount.input.image_hash_lo),
&(glob_xmount.input.image_hash_hi))==FALSE)
{
LOG_ERROR("Couldn't calculate partial hash of morphed image!\n")
return 1;
}
if(glob_xmount.debug==TRUE) {
LOG_DEBUG("Partial MD5 hash of morphed image: ")
for(int i=0;i<8;i++)
printf("%02hhx",*(((char*)(&(glob_xmount.input.image_hash_lo)))+i));
for(int i=0;i<8;i++)
printf("%02hhx",*(((char*)(&(glob_xmount.input.image_hash_hi)))+i));
printf("\n");
}
if(!ExtractOutputFileNames(glob_xmount.input.pp_images[0]->pp_files[0])) {
LOG_ERROR("Couldn't extract virtual file names!\n");
FreeResources();
return 1;
}
LOG_DEBUG("Virtual file names extracted successfully\n")
// Find output lib
if(FindOutputLib()!=TRUE) {
LOG_ERROR("Unable to find a library supporting the output format '%s'!\n",
glob_xmount.output.p_output_format);
FreeResources();
return 1;
}
// Init output
ret=glob_xmount.output.p_functions->
CreateHandle(&glob_xmount.output.p_handle,
glob_xmount.output.p_output_format,
glob_xmount.debug);
if(ret!=0) {
LOG_ERROR("Unable to create output handle: %s!\n",
glob_xmount.output.p_functions->GetErrorMessage(ret));
FreeResources();
return 1;
}
// Parse output lib specific options
if(glob_xmount.output.pp_lib_params!=NULL) {
p_err_msg=NULL;
ret=glob_xmount.output.p_functions->
OptionsParse(glob_xmount.output.p_handle,
glob_xmount.output.lib_params_count,
glob_xmount.output.pp_lib_params,
(const char**)&p_err_msg);
if(ret!=0) {
if(p_err_msg!=NULL) {
LOG_ERROR("Unable to parse output library specific options: %s: %s!\n",
glob_xmount.output.p_functions->GetErrorMessage(ret),
p_err_msg);
glob_xmount.output.p_functions->FreeBuffer(p_err_msg);
FreeResources();
return 1;
} else {
LOG_ERROR("Unable to parse output library specific options: %s!\n",
glob_xmount.output.p_functions->GetErrorMessage(ret));
FreeResources();
return 1;
}
}
}
// Morph image
ret=glob_xmount.morphing.p_functions->
Morph(glob_xmount.morphing.p_handle,
&(glob_xmount.morphing.input_image_functions));
if(ret!=0) {
LOG_ERROR("Unable to start morphing: %s!\n",
glob_xmount.morphing.p_functions->GetErrorMessage(ret));
FreeResources();
return 1;
}
// Gather infos for info file
if(!InitInfoFile()) {
LOG_ERROR("Couldn't gather infos for virtual image info file!\n")
FreeResources();
return 1;
}
LOG_DEBUG("Virtual image info file build successfully\n")
if(glob_xmount.output.writable) {
// Init cache file and cache file block index
if(!InitCacheFile()) {
LOG_ERROR("Couldn't initialize cache file!\n")
FreeResources();
return 1;
}
LOG_DEBUG("Cache file initialized successfully\n")
}
// Call fuse_main to do the fuse magic
fuse_ret=fuse_main(glob_xmount.fuse_argc,
glob_xmount.pp_fuse_argv,
&xmount_operations,
NULL);
// Destroy mutexes
pthread_mutex_destroy(&(glob_xmount.mutex_image_rw));
pthread_mutex_destroy(&(glob_xmount.mutex_info_read));
// Free allocated memory
FreeResources();
return fuse_ret;
}
diff --git a/src/xmount.h b/src/xmount.h
index 9039559..72e993c 100755
--- a/src/xmount.h
+++ b/src/xmount.h
@@ -1,292 +1,312 @@
/*******************************************************************************
* xmount Copyright (c) 2008-2016 by Gillen Daniel <gillen.dan@pinguin.lu> *
* *
* xmount is a small tool to "fuse mount" various image formats and enable *
* virtual write access. *
* *
* This program is free software: you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the Free *
* Software Foundation, either version 3 of the License, or (at your option) *
* any later version. *
* *
* This program is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for *
* more details. *
* *
* You should have received a copy of the GNU General Public License along with *
* this program. If not, see <http://www.gnu.org/licenses/>. *
*******************************************************************************/
+#ifndef XMOUNT_H
+#define XMOUNT_H
+
+#include <gidafs.h>
+
#include "../libxmount_input/libxmount_input.h"
#include "../libxmount_morphing/libxmount_morphing.h"
#include "../libxmount_output/libxmount_output.h"
#undef FALSE
#undef TRUE
#define FALSE 0
#define TRUE 1
/*
* Constants
*/
#define IMAGE_INFO_INPUT_HEADER \
"------> The following values are supplied by the used input library(ies) " \
"<------\n"
#define IMAGE_INFO_MORPHING_HEADER \
"\n------> The following values are supplied by the used morphing library " \
"<------\n\n"
/*******************************************************************************
* Xmount specific structures
******************************************************************************/
#ifdef __LP64__
#define CACHE_BLOCK_FREE 0xFFFFFFFFFFFFFFFF
#else
#define CACHE_BLOCK_FREE 0xFFFFFFFFFFFFFFFFLL
#endif
#ifdef __LP64__
#define XMOUNT_BLOCK_CACHE_INVALID_INDEX 0xFFFFFFFFFFFFFFFF
#else
#define XMOUNT_BLOCK_CACHE_INVALID_INDEX 0xFFFFFFFFFFFFFFFFLL
#endif
//! Cache file block index array element
typedef uint64_t t_CacheFileBlockIndex;
// TODO: Remove
typedef struct s_CacheFileBlockIndex {
//! Set to 1 if block is assigned (this block has data in cache file)
uint32_t Assigned;
//! Offset to data in cache file
uint64_t off_data;
} __attribute__ ((packed)) ts_CacheFileBlockIndex, *pts_CacheFileBlockIndex;
#define CACHE_BLOCK_SIZE (1024*1024) // 1 megabyte
#ifdef __LP64__
#define CACHE_FILE_SIGNATURE 0xFFFF746E756F6D78 // "xmount\xFF\xFF"
#else
#define CACHE_FILE_SIGNATURE 0xFFFF746E756F6D78LL
#endif
#define CUR_CACHE_FILE_VERSION 0x00000002 // Current cache file version
#define HASH_AMOUNT (1024*1024)*10 // Amount of data used to construct a
// "unique" hash for every input image
// (10MByte)
//! Cache file header structure
typedef struct s_CacheFileHeader {
//! Simple signature to identify cache files
uint64_t FileSignature;
//! Cache file version
uint32_t CacheFileVersion;
//! Cache block size
uint64_t BlockSize;
//! Total amount of cache blocks
uint64_t BlockCount;
//! Offset to the first block index array element
uint64_t pBlockIndex;
//! Set to 1 if VDI file header is cached
uint32_t VdiFileHeaderCached;
//! Offset to cached VDI file header
uint64_t pVdiFileHeader;
//! Set to 1 if VMDK file is cached
uint32_t VmdkFileCached;
//! Size of VMDK file
uint64_t VmdkFileSize;
//! Offset to cached VMDK file
uint64_t pVmdkFile;
//! Set to 1 if VHD header is cached
uint32_t VhdFileHeaderCached;
//! Offset to cached VHD header
uint64_t pVhdFileHeader;
//! Padding to get 512 byte alignment and ease further additions
char HeaderPadding[432];
} __attribute__ ((packed)) ts_CacheFileHeader, *pts_CacheFileHeader;
//! Cache file header structure - Old v1 header
typedef struct s_CacheFileHeader_v1 {
//! Simple signature to identify cache files
uint64_t FileSignature;
//! Cache file version
uint32_t CacheFileVersion;
//! Total amount of cache blocks
uint64_t BlockCount;
//! Offset to the first block index array element
uint64_t pBlockIndex;
//! Set to 1 if VDI file header is cached
uint32_t VdiFileHeaderCached;
//! Offset to cached VDI file header
uint64_t pVdiFileHeader;
//! Set to 1 if VMDK file is cached
} ts_CacheFileHeader_v1, *pts_CacheFileHeader_v1;
//! Structure containing infos about input libs
typedef struct s_InputLib {
//! Filename of lib (without path)
char *p_name;
//! Handle to the loaded lib
void *p_lib;
//! Array of supported input types
char *p_supported_input_types;
//! Struct containing lib functions
ts_LibXmountInputFunctions lib_functions;
} ts_InputLib, *pts_InputLib;
//! Structure containing infos about input images
typedef struct s_InputImage {
//! Image type
char *p_type;
//! Image source file count
uint64_t files_count;
//! Image source files
char **pp_files;
//! Input lib functions for this image
pts_LibXmountInputFunctions p_functions;
//! Image handle
void *p_handle;
//! Image size
uint64_t size;
} ts_InputImage, *pts_InputImage;
typedef struct s_InputData {
//! Loaded input lib count
uint32_t libs_count;
//! Array containing infos about loaded input libs
pts_InputLib *pp_libs;
//! Amount of input lib params (--inopts)
uint32_t lib_params_count;
//! Input lib params (--inopts)
pts_LibXmountOptions *pp_lib_params;
//! Input image count
uint64_t images_count;
//! Input images
pts_InputImage *pp_images;
//! Input image offset (--offset)
uint64_t image_offset;
//! Input image size limit (--sizelimit)
uint64_t image_size_limit;
//! MD5 hash of partial input image (lower 64 bit) (after morph)
uint64_t image_hash_lo;
//! MD5 hash of partial input image (higher 64 bit) (after morph)
uint64_t image_hash_hi;
} ts_InputData;
//! Structure containing infos about morphing libs
typedef struct s_MorphingLib {
//! Filename of lib (without path)
char *p_name;
//! Handle to the loaded lib
void *p_lib;
//! Array of supported morphing types
char *p_supported_morphing_types;
//! Struct containing lib functions
ts_LibXmountMorphingFunctions lib_functions;
} ts_MorphingLib, *pts_MorphingLib;
//! Structures and vars needed for morph support
typedef struct s_MorphingData {
//! Loaded morphing lib count
uint32_t libs_count;
//! Array containing infos about loaded morphing libs
pts_MorphingLib *pp_libs;
//! Specified morphing type (--morph)
char *p_morph_type;
//! Amount of specified morphing lib params (--morphopts)
uint32_t lib_params_count;
//! Specified morphing lib params (--morphopts)
pts_LibXmountOptions *pp_lib_params;
//! Handle to initialized morphing lib
void *p_handle;
//! Morphing functions of initialized lib
pts_LibXmountMorphingFunctions p_functions;
//! Input image functions passed to morphing lib
ts_LibXmountMorphingInputFunctions input_image_functions;
} ts_MorphingData;
//! Structures and vars needed for write access
#define XMOUNT_CACHE_FOLDER "/.xmount"
#define XMOUNT_CACHE_BLOCK_FILE XMOUNT_CACHE_FOLDER "/blocks.data"
#define XMOUNT_CACHE_BLOCK_INDEX_FILE XMOUNT_CACHE_FOLDER "/blocks.index"
typedef struct s_CacheData {
//! Cache file to save changes to
char *p_cache_file;
//! Handle to cache file
hGidaFs h_cache_file;
//! Handle to block cache
hGidaFsFile h_block_cache;
//! Handle to block cache index
hGidaFsFile h_block_cache_index;
//! In-memory copy of cache index
t_CacheFileBlockIndex *p_block_cache_index;
//! Length (in elements) of in-memory block cache index
uint64_t block_cache_index_len;
// TODO: Move to s_XmountData
//! Overwrite existing cache
uint8_t overwrite_cache;
} ts_CacheData;
//! Structure containing infos about output libs
typedef struct s_OutputLib {
//! Filename of lib (without path)
char *p_name;
//! Handle to the loaded lib
void *p_lib;
//! Array of supported output formats
char *p_supported_output_formats;
//! Struct containing lib functions
ts_LibXmountOutput_Functions lib_functions;
} ts_OutputLib, *pts_OutputLib;
//! Structure containing infos about output image
typedef struct s_OutputData {
//! Loaded output lib count
uint32_t libs_count;
//! Array containing infos about loaded output libs
pts_OutputLib *pp_libs;
//! Specified output format (--out)
char *p_output_format;
//! Amount of specified output lib params
uint32_t lib_params_count;
//! Specified output lib params (--outopts)
pts_LibXmountOptions *pp_lib_params;
//! Handle to initialized output lib
void *p_handle;
//! Transformation functions of initialized lib
pts_LibXmountOutput_Functions p_functions;
//! Input image functions passed to output lib
ts_LibXmountOutput_InputFunctions input_functions;
//! Size
uint64_t image_size;
//! Writable? (Set to 1 if --cache was specified)
uint8_t writable;
//! Path of virtual image file
char *p_virtual_image_path;
//! Path of virtual image info file
char *p_info_path;
//! Pointer to virtual info file
char *p_info_file;
} ts_OutputData;
//! Structure containing global xmount runtime infos
typedef struct s_XmountData {
//! Input image related data
ts_InputData input;
//! Morphing related data
ts_MorphingData morphing;
//! Cache file related data
ts_CacheData cache;
//! Output image related data
ts_OutputData output;
//! Enable debug output
uint8_t debug;
//! Set if we are allowed to set fuse's allow_other option
uint8_t may_set_fuse_allow_other;
//! Argv for FUSE
int fuse_argc;
//! Argv for FUSE
char **pp_fuse_argv;
//! Mount point
char *p_mountpoint;
//! Mutex to control concurrent read & write access on output image
pthread_mutex_t mutex_image_rw;
//! Mutex to control concurrent read access on info file
pthread_mutex_t mutex_info_read;
} ts_XmountData;
+
+/*******************************************************************************
+ * Global vars
+ ******************************************************************************/
+//! Struct that contains various runtime configuration options
+ts_XmountData glob_xmount;
+
+/*******************************************************************************
+ * Xmount functions
+ ******************************************************************************/
+int GetOutputImageSize(uint64_t*);
+int ReadOutputImageData(char*, off_t, size_t);
+int WriteOutputImageData(const char*, off_t, size_t);
+
+#endif // XMOUNT_H
diff --git a/src/xmount_fuse.c b/src/xmount_fuse.c
new file mode 100644
index 0000000..9d22d22
--- /dev/null
+++ b/src/xmount_fuse.c
@@ -0,0 +1,366 @@
+/*******************************************************************************
+* xmount Copyright (c) 2008-2016 by Gillen Daniel <gillen.dan@pinguin.lu> *
+* *
+* This program is free software: you can redistribute it and/or modify it *
+* under the terms of the GNU General Public License as published by the Free *
+* Software Foundation, either version 3 of the License, or (at your option) *
+* any later version. *
+* *
+* This program is distributed in the hope that it will be useful, but WITHOUT *
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
+* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for *
+* more details. *
+* *
+* You should have received a copy of the GNU General Public License along with *
+* this program. If not, see <http://www.gnu.org/licenses/>. *
+*******************************************************************************/
+
+#include <errno.h>
+
+#include "xmount_fuse.h"
+#include "xmount.h"
+
+#define LOG_WARNING(...) { \
+ LIBXMOUNT_LOG_WARNING(__VA_ARGS__); \
+}
+#define LOG_ERROR(...) { \
+ LIBXMOUNT_LOG_ERROR(__VA_ARGS__); \
+}
+#define LOG_DEBUG(...) { \
+ LIBXMOUNT_LOG_DEBUG(glob_xmount.debug,__VA_ARGS__); \
+}
+
+/*******************************************************************************
+ * FUSE function implementation
+ ******************************************************************************/
+//! FUSE access implementation
+/*!
+ * \param p_path Path of file to get attributes from
+ * \param perm Requested permissisons
+ * \return 0 on success, negated error code on error
+ */
+/*
+int Xmount_FuseAccess(const char *path, int perm) {
+ // TODO: Implement propper file permission handling
+ // http://www.cs.cf.ac.uk/Dave/C/node20.html
+ // Values for the second argument to access.
+ // These may be OR'd together.
+ //#define R_OK 4 // Test for read permission.
+ //#define W_OK 2 // Test for write permission.
+ //#define X_OK 1 // Test for execute permission.
+ //#define F_OK 0 // Test for existence.
+ return 0;
+}
+*/
+
+//! FUSE getattr implementation
+/*!
+ * \param p_path Path of file to get attributes from
+ * \param p_stat Pointer to stat structure to save attributes to
+ * \return 0 on success, negated error code on error
+ */
+int Xmount_FuseGetAttr(const char *p_path, struct stat *p_stat) {
+ memset(p_stat,0,sizeof(struct stat));
+ if(strcmp(p_path,"/")==0) {
+ // Attributes of mountpoint
+ p_stat->st_mode=S_IFDIR | 0777;
+ p_stat->st_nlink=2;
+ } else if(strcmp(p_path,glob_xmount.output.p_virtual_image_path)==0) {
+ // Attributes of virtual image
+ if(!glob_xmount.output.writable) p_stat->st_mode=S_IFREG | 0444;
+ else p_stat->st_mode=S_IFREG | 0666;
+ p_stat->st_nlink=1;
+ // Get output image file size
+ if(!GetOutputImageSize((uint64_t*)&(p_stat->st_size))) {
+ LOG_ERROR("Couldn't get image size!\n");
+ return -ENOENT;
+ }
+ // Make sure virtual image seems to be fully allocated (not sparse file).
+ p_stat->st_blocks=p_stat->st_size/512;
+ if(p_stat->st_size%512!=0) p_stat->st_blocks++;
+ } else if(strcmp(p_path,glob_xmount.output.p_info_path)==0) {
+ // Attributes of virtual image info file
+ p_stat->st_mode=S_IFREG | 0444;
+ p_stat->st_nlink=1;
+ // Get virtual image info file size
+ if(glob_xmount.output.p_info_file!=NULL) {
+ p_stat->st_size=strlen(glob_xmount.output.p_info_file);
+ } else p_stat->st_size=0;
+ } else return -ENOENT;
+ // Set uid and gid of all files to uid and gid of current process
+ p_stat->st_uid=getuid();
+ p_stat->st_gid=getgid();
+ return 0;
+}
+
+//! FUSE mkdir implementation
+/*!
+ * \param p_path Directory path
+ * \param mode Directory permissions
+ * \return 0 on success, negated error code on error
+ */
+int Xmount_FuseMkDir(const char *p_path, mode_t mode) {
+ // TODO: Implement
+ LOG_ERROR("Attempt to create directory \"%s\" "
+ "on read-only filesystem!\n",p_path)
+ return -1;
+}
+
+//! FUSE create implementation.
+/*!
+ * \param p_path File to create
+ * \param mode File mode
+ * \param dev ??? but not used
+ * \return 0 on success, negated error code on error
+ */
+int Xmount_FuseMkNod(const char *p_path, mode_t mode, dev_t dev) {
+ // TODO: Implement
+ LOG_ERROR("Attempt to create illegal file \"%s\"\n",p_path)
+ return -1;
+}
+
+//! FUSE readdir implementation
+/*!
+ * \param p_path Path from where files should be listed
+ * \param p_buf Buffer to write file entrys to
+ * \param filler Function to write dir entrys to buffer
+ * \param offset ??? but not used
+ * \param p_fi File info struct
+ * \return 0 on success, negated error code on error
+ */
+int Xmount_FuseReadDir(const char *p_path,
+ void *p_buf,
+ fuse_fill_dir_t filler,
+ off_t offset,
+ struct fuse_file_info *p_fi)
+{
+ // Ignore some params
+ (void)offset;
+ (void)p_fi;
+
+ if(strcmp(p_path,"/")==0) {
+ // Add std . and .. entrys
+ filler(p_buf,".",NULL,0);
+ filler(p_buf,"..",NULL,0);
+ // Add our virtual files (p+1 to ignore starting "/")
+ filler(p_buf,glob_xmount.output.p_virtual_image_path+1,NULL,0);
+ filler(p_buf,glob_xmount.output.p_info_path+1,NULL,0);
+ } else return -ENOENT;
+
+ return 0;
+}
+
+//! FUSE open implementation
+/*!
+ * \param p_path Path to file to open
+ * \param p_fi File info struct
+ * \return 0 on success, negated error code on error
+ */
+int Xmount_FuseOpen(const char *p_path, struct fuse_file_info *p_fi) {
+
+#define CHECK_OPEN_PERMS() { \
+ if(!glob_xmount.output.writable && (p_fi->flags & 3)!=O_RDONLY) { \
+ LOG_DEBUG("Attempt to open the read-only file \"%s\" for writing.\n", \
+ p_path) \
+ return -EACCES; \
+ } \
+ return 0; \
+}
+
+ if(strcmp(p_path,glob_xmount.output.p_virtual_image_path)==0 ||
+ strcmp(p_path,glob_xmount.output.p_info_path)==0)
+ {
+ CHECK_OPEN_PERMS();
+ }
+
+#undef CHECK_OPEN_PERMS
+
+ LOG_DEBUG("Attempt to open inexistant file \"%s\".\n",p_path);
+ return -ENOENT;
+}
+
+//! FUSE read implementation
+/*!
+ * \param p_path Path (relative to mount folder) of file to read data from
+ * \param p_buf Pre-allocated buffer where read data should be written to
+ * \param size Number of bytes to read
+ * \param offset Offset to start reading at
+ * \param p_fi: File info struct
+ * \return Read bytes on success, negated error code on error
+ */
+int Xmount_FuseRead(const char *p_path,
+ char *p_buf,
+ size_t size,
+ off_t offset,
+ struct fuse_file_info *p_fi)
+{
+ (void)p_fi;
+
+ int ret;
+ uint64_t len;
+
+#define READ_MEM_FILE(filebuf,filesize,filetypestr,mutex) { \
+ len=filesize; \
+ if(offset<len) { \
+ if(offset+size>len) { \
+ LOG_DEBUG("Attempt to read past EOF of virtual " filetypestr " file\n"); \
+ LOG_DEBUG("Adjusting read size from %u to %u\n",size,len-offset); \
+ size=len-offset; \
+ } \
+ pthread_mutex_lock(&mutex); \
+ memcpy(p_buf,filebuf+offset,size); \
+ pthread_mutex_unlock(&mutex); \
+ LOG_DEBUG("Read %" PRIu64 " bytes at offset %" PRIu64 \
+ " from virtual " filetypestr " file\n",size,offset); \
+ ret=size; \
+ } else { \
+ LOG_DEBUG("Attempt to read behind EOF of virtual " filetypestr " file\n"); \
+ ret=0; \
+ } \
+}
+
+ if(strcmp(p_path,glob_xmount.output.p_virtual_image_path)==0) {
+ // Read data from virtual output file
+ // Wait for other threads to end reading/writing data
+ pthread_mutex_lock(&(glob_xmount.mutex_image_rw));
+ // Get requested data
+ if((ret=ReadOutputImageData(p_buf,offset,size))<0) {
+ LOG_ERROR("Couldn't read data from virtual image file!\n")
+ }
+ // Allow other threads to read/write data again
+ pthread_mutex_unlock(&(glob_xmount.mutex_image_rw));
+ } else if(strcmp(p_path,glob_xmount.output.p_info_path)==0) {
+ // Read data from virtual info file
+ READ_MEM_FILE(glob_xmount.output.p_info_file,
+ strlen(glob_xmount.output.p_info_file),
+ "info",
+ glob_xmount.mutex_info_read);
+ } else {
+ // Attempt to read non existant file
+ LOG_DEBUG("Attempt to read from non existant file \"%s\"\n",p_path)
+ ret=-ENOENT;
+ }
+
+#undef READ_MEM_FILE
+
+ // TODO: Return size of read data!!!!!
+ return ret;
+}
+
+//! FUSE rename implementation
+/*!
+ * \param p_path File to rename
+ * \param p_npath New filename
+ * \return 0 on error, negated error code on error
+ */
+int Xmount_FuseRename(const char *p_path, const char *p_npath) {
+ // TODO: Implement
+ return -ENOENT;
+}
+
+//! FUSE rmdir implementation
+/*!
+ * \param p_path Directory to delete
+ * \return 0 on success, negated error code on error
+ */
+int Xmount_FuseRmDir(const char *p_path) {
+ // TODO: Implement
+ return -1;
+}
+
+//! FUSE unlink implementation
+/*!
+ * \param p_path File to delete
+ * \return 0 on success, negated error code on error
+ */
+int Xmount_FuseUnlink(const char *p_path) {
+ // TODO: Implement
+ return -1;
+}
+
+//! FUSE statfs implementation
+/*!
+ * \param p_path Get stats for fs that the specified file resides in
+ * \param stats Stats
+ * \return 0 on success, negated error code on error
+ */
+/*
+int Xmount_FuseStatFs(const char *p_path, struct statvfs *stats) {
+ struct statvfs CacheFileFsStats;
+ int ret;
+
+ if(glob_xmount.writable==TRUE) {
+ // If write support is enabled, return stats of fs upon which cache file
+ // resides in
+ if((ret=statvfs(glob_xmount.p_cache_file,&CacheFileFsStats))==0) {
+ memcpy(stats,&CacheFileFsStats,sizeof(struct statvfs));
+ return 0;
+ } else {
+ LOG_ERROR("Couldn't get stats for fs upon which resides \"%s\"\n",
+ glob_xmount.p_cache_file)
+ return ret;
+ }
+ } else {
+ // TODO: Return read only
+ return 0;
+ }
+}
+*/
+
+// FUSE write implementation
+/*!
+ * \param p_buf Buffer containing data to write
+ * \param size Number of bytes to write
+ * \param offset Offset to start writing at
+ * \param p_fi: File info struct
+ *
+ * Returns:
+ * Written bytes on success, negated error code on error
+ */
+int Xmount_FuseWrite(const char *p_path,
+ const char *p_buf,
+ size_t size,
+ off_t offset,
+ struct fuse_file_info *p_fi)
+{
+ (void)p_fi;
+
+ uint64_t len;
+
+ if(strcmp(p_path,glob_xmount.output.p_virtual_image_path)==0) {
+ // Wait for other threads to end reading/writing data
+ pthread_mutex_lock(&(glob_xmount.mutex_image_rw));
+
+ // Get output image file size
+ if(!GetOutputImageSize(&len)) {
+ LOG_ERROR("Couldn't get virtual image size!\n")
+ pthread_mutex_unlock(&(glob_xmount.mutex_image_rw));
+ return 0;
+ }
+ if(offset<len) {
+ if(offset+size>len) size=len-offset;
+ if(WriteOutputImageData(p_buf,offset,size)!=size) {
+ LOG_ERROR("Couldn't write data to virtual image file!\n")
+ pthread_mutex_unlock(&(glob_xmount.mutex_image_rw));
+ return 0;
+ }
+ } else {
+ LOG_DEBUG("Attempt to write past EOF of virtual image file\n")
+ pthread_mutex_unlock(&(glob_xmount.mutex_image_rw));
+ return 0;
+ }
+
+ // Allow other threads to read/write data again
+ pthread_mutex_unlock(&(glob_xmount.mutex_image_rw));
+ } else if(strcmp(p_path,glob_xmount.output.p_info_path)==0) {
+ // Attempt to write data to read only image info file
+ LOG_DEBUG("Attempt to write data to virtual info file\n");
+ return -ENOENT;
+ } else {
+ // Attempt to write to non existant file
+ LOG_DEBUG("Attempt to write to the non existant file \"%s\"\n",p_path)
+ return -ENOENT;
+ }
+
+ return size;
+}
diff --git a/src/xmount_fuse.h b/src/xmount_fuse.h
new file mode 100644
index 0000000..45a22c4
--- /dev/null
+++ b/src/xmount_fuse.h
@@ -0,0 +1,59 @@
+/*******************************************************************************
+* xmount Copyright (c) 2008-2016 by Gillen Daniel <gillen.dan@pinguin.lu> *
+* *
+* This program is free software: you can redistribute it and/or modify it *
+* under the terms of the GNU General Public License as published by the Free *
+* Software Foundation, either version 3 of the License, or (at your option) *
+* any later version. *
+* *
+* This program is distributed in the hope that it will be useful, but WITHOUT *
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
+* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for *
+* more details. *
+* *
+* You should have received a copy of the GNU General Public License along with *
+* this program. If not, see <http://www.gnu.org/licenses/>. *
+*******************************************************************************/
+
+#ifndef XMOUNT_FUSE_H
+#define XMOUNT_FUSE_H
+
+#define FUSE_USE_VERSION 26
+#include <fuse.h>
+/*
+int Xmount_FuseAccess(const char*,
+ int);
+*/
+int Xmount_FuseGetAttr(const char*,
+ struct stat*);
+int Xmount_FuseMkDir(const char*,
+ mode_t);
+int Xmount_FuseMkNod(const char*,
+ mode_t, dev_t);
+int Xmount_FuseReadDir(const char*,
+ void*,
+ fuse_fill_dir_t,
+ off_t,
+ struct fuse_file_info*);
+int Xmount_FuseOpen(const char*,
+ struct fuse_file_info*);
+int Xmount_FuseRead(const char*,
+ char*,
+ size_t,
+ off_t,
+ struct fuse_file_info*);
+int Xmount_FuseRename(const char*,
+ const char*);
+int Xmount_FuseRmDir(const char*);
+int Xmount_FuseUnlink(const char*);
+/*
+int XmountFuse_StatFs(const char*,
+ struct statvfs*);
+*/
+int Xmount_FuseWrite(const char *p_path,
+ const char*,
+ size_t,
+ off_t,
+ struct fuse_file_info*);
+
+#endif // XMOUNT_FUSE_H

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Storage Format
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Storage Handle
1176901
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