The myriadfs program is now in it's own seperate area and not built by default.

1 files changed, 333 insertions, 0 deletions

diff --git a/src/extra/myriadfs.cpp b/src/extra/myriadfs.cpp
new file mode 100644
index 0000000..3e4599b
--- /dev/null
+++ b/src/extra/myriadfs.cpp
@@ -0,0 +1,333 @@
+/*
+ * Copyright (C) 2007-2011 Xagasoft, All rights reserved.
+ *
+ * This file is part of the libbu++ library and is released under the
+ * terms of the license contained in the file LICENSE.
+ */
+
+#define FUSE_USE_VERSION 26
+
+#include <fuse.h>
+
+#include <string.h>
+#include <errno.h>
+
+#include <bu/file.h>
+#include <bu/myriadfs.h>
+#include <bu/myriadstream.h>
+#include <bu/hash.h>
+
+Bu::File *pF = NULL;
+Bu::MyriadFs *pFs = NULL;
+
+typedef Bu::Hash<int64_t, Bu::MyriadStream> FileHash;
+FileHash hOpenFiles;
+int64_t iNextFileId = 0;
+
+#define TRACE
+
+extern "C" {
+        static int myriadfs_getattr( const char *sPath, struct stat *stbuf )
+        {
+#ifdef TRACE
+                printf("myriadfs_getattr(\"%s\", ... );\n", sPath );
+#endif
+                try
+                {
+                        Bu::MyriadFs::Stat st;
+                        pFs->stat( sPath, st );
+                        stbuf->st_ino = st.iNode;
+                        stbuf->st_mode = st.uPerms;
+                        stbuf->st_nlink = st.iLinks;
+                        stbuf->st_uid = st.iUser;
+                        stbuf->st_gid = st.iGroup;
+                        stbuf->st_rdev = Bu::MyriadFs::devToSys( st.uDev );
+                        stbuf->st_size = st.iSize;
+                        stbuf->st_blocks = 8;
+                        stbuf->st_atime = st.iATime;
+                        stbuf->st_mtime = st.iMTime;
+                        stbuf->st_ctime = st.iCTime;
+                        return 0;
+                }
+                catch(...)
+                {
+                        return -ENOENT;
+                }
+        }
+
+        static int myriadfs_readdir( const char *sPath, void *buf,
+                        fuse_fill_dir_t filler, off_t offset, struct fuse_file_info *fi )
+        {
+#ifdef TRACE
+                printf("myriadfs_readdir(\"%s\", ... );\n", sPath );
+#endif
+                Bu::MyriadFs::Dir lDir = pFs->readDir( sPath );
+                filler( buf, ".", NULL, 0 );
+                filler( buf, "..", NULL, 0 );
+                for( Bu::MyriadFs::Dir::iterator i = lDir.begin(); i; i++ )
+                {
+                        filler( buf, (*i).sName.getStr(), NULL, 0 );
+                }
+
+                return 0;
+        }
+
+        static int myriadfs_mkdir( const char *sPath, mode_t uMode )
+        {
+#ifdef TRACE
+                printf("myriadfs_mkdir(\"%s\", 0%o );\n", sPath, uMode );
+#endif
+                pFs->mkDir( sPath, uMode );
+                return 0;
+        }
+
+        static int myriadfs_open( const char *sPath, struct fuse_file_info *fi )
+        {
+#ifdef TRACE
+                printf("myriadfs_open(\"%s\", ... );\n", sPath );
+#endif
+                try
+                {
+                        Bu::MyriadStream ms = pFs->open( sPath, 0 );
+                        fi->fh = iNextFileId;
+                        hOpenFiles.insert( iNextFileId++, ms );
+//                      printf("File '%s' opened, %d files open now.\n",
+//                              sPath, hOpenFiles.getSize() );
+                        return 0;
+                }
+                catch(...)
+                {
+                        return -EACCES;
+                }
+        }
+
+        static int myriadfs_read( const char *sPath, char *buf, size_t iSize,
+                        off_t iOffset, struct fuse_file_info *fi )
+        {
+#ifdef TRACE
+                printf("myriadfs_read(\"%s\", ..., %d, %d, ... );\n", sPath, iSize,
+                                iOffset );
+#endif
+                Bu::MyriadStream &ms = hOpenFiles.get( fi->fh );
+                ms.setPos( iOffset );
+                return ms.read( buf, iSize );
+        }
+
+        static int myriadfs_write( const char *sPath, const char *buf, size_t iSize,
+                        off_t iOffset, struct fuse_file_info *fi )
+        {
+#ifdef TRACE
+                printf("myriadfs_write(\"%s\", ..., %d, %d, ... );\n", sPath, iSize,
+                                iOffset );
+#endif
+                Bu::MyriadStream &ms = hOpenFiles.get( fi->fh );
+                ms.setPos( iOffset );
+                return ms.write( buf, iSize );
+        }
+
+        static int myriadfs_create( const char *sPath, mode_t uPerms,
+                        struct fuse_file_info *fi )
+        {
+#ifdef TRACE
+                printf("myriadfs_create(\"%s\", 0%o, ... );\n", sPath, uPerms );
+#endif
+                try
+                {
+                        Bu::MyriadStream ms = pFs->open( sPath, 0, uPerms );
+                        fi->fh = iNextFileId;
+                        hOpenFiles.insert( iNextFileId++, ms );
+//                      printf("File '%s' created, %d files open now.\n",
+//                              sPath, hOpenFiles.getSize() );
+                        return 0;
+                }
+                catch(...)
+                {
+                        return -EACCES;
+                }
+        }
+        
+        static int myriadfs_mknod( const char *sPath, mode_t uPerms, dev_t Dev )
+        {
+#ifdef TRACE
+                printf("myriadfs_mknod(\"%s\", 0%o, %x );\n", sPath, uPerms, Dev );
+#endif
+                try
+                {
+                        pFs->create( sPath, uPerms, Bu::MyriadFs::sysToDev( Dev ) );
+                        return 0;
+                }
+                catch(...)
+                {
+                        return -EACCES;
+                }
+        }
+
+        static int myriadfs_release( const char *sPath, struct fuse_file_info *fi )
+        {
+#ifdef TRACE
+                printf("myriadfs_release(\"%s\", ... );\n", sPath );
+#endif
+                hOpenFiles.erase( fi->fh );
+//              printf("File '%s' released, %d files open now.\n",
+//                      sPath, hOpenFiles.getSize() );
+
+                return 0;
+        }
+
+        static int myriadfs_utimens( const char *sPath,
+                        const struct timespec tv[2] )
+        {
+#ifdef TRACE
+                printf("myriadfs_utimens(\"%s\", ... );\n", sPath );
+#endif
+                try
+                {
+                        pFs->setTimes( sPath, tv[0].tv_sec, tv[1].tv_sec );
+                }
+                catch(...)
+                {
+                        return -EACCES;
+                }
+                return 0;
+        }
+
+        static int myriadfs_unlink( const char *sPath )
+        {
+#ifdef TRACE
+                printf("myriadfs_unlink(\"%s\");\n", sPath );
+#endif
+                try
+                {
+                        pFs->unlink( sPath );
+                }
+                catch( Bu::MyriadFsException &e )
+                {
+                        printf("MyriadFsException: %s\n", e.what() );
+                        return -EACCES;
+                }
+                return 0;
+        }
+
+        static int myriadfs_symlink( const char *sTarget, const char *sPath )
+        {
+#ifdef TRACE
+                printf("myriadfs_symlink(\"%s\", \"%s\");\n", sTarget, sPath );
+#endif
+                try
+                {
+                        pFs->mkSymLink( sTarget, sPath );
+                }
+                catch( Bu::MyriadFsException &e )
+                {
+                        printf("MyriadFsException: %s\n", e.what() );
+                        return -EACCES;
+                }
+                return 0;
+        }
+
+        static int myriadfs_readlink( const char *sPath, char *sOut, size_t s )
+        {
+#ifdef TRACE
+                printf("myriadfs_readlink(\"%s\", ... );\n", sPath );
+#endif
+                try
+                {
+                        Bu::String sTrg = pFs->readSymLink( sPath );
+                        size_t iLen = (s-1>sTrg.getSize())?(sTrg.getSize()):(s-1);
+                        memcpy( sOut, sTrg.getStr(), iLen );
+                        sOut[iLen] = '\0';
+                }
+                catch( Bu::MyriadFsException &e )
+                {
+                        printf("MyriadFsException: %s\n", e.what() );
+                        return -EACCES;
+                }
+                return 0;
+        }
+
+        static int myriadfs_truncate( const char *sPath, off_t iSize )
+        {
+#ifdef TRACE
+                printf("myriadfs_truncate(\"%s\", %d );\n", sPath, iSize );
+#endif
+
+                try
+                {
+                        pFs->setFileSize( sPath, iSize );
+                }
+                catch( Bu::MyriadFsException &e )
+                {
+                        printf("MyriadFsException: %s\n", e.what() );
+                        return -ENOENT;
+                }
+                return 0;
+        }
+
+        static int myriadfs_link( const char *sTarget, const char *sPath )
+        {
+#ifdef TRACE
+                printf("myriadfs_link(\"%s\", \"%s\");\n", sTarget, sPath );
+#endif
+
+                try
+                {
+                        pFs->mkHardLink( sTarget, sPath );
+                }
+                catch( Bu::MyriadFsException &e )
+                {
+                        printf("MyriadFsException: %s\n", e.what() );
+                        return -EACCES;
+                }
+                return 0;
+        }
+
+        static int myriadfs_rename( const char *sFrom, const char *sTo )
+        {
+#ifdef TRACE
+                printf("myriadfs_rename(\"%s\", \"%s\");\n", sFrom, sTo );
+#endif
+
+                try
+                {
+                        pFs->rename( sFrom, sTo );
+                }
+                catch( Bu::MyriadFsException &e )
+                {
+                        printf("MyriadFsException: %s\n", e.what() );
+                        return -EACCES;
+                }
+                return 0;
+        }
+
+        static struct fuse_operations myriadfs_oper;
+
+        int main( int argc, char *argv[] )
+        {
+                pF = new Bu::File("store.myr", Bu::File::Read|Bu::File::Write|Bu::File::Create );
+                pFs = new Bu::MyriadFs( *pF, 512 );
+                memset( &myriadfs_oper, sizeof(myriadfs_oper), 0 );
+                myriadfs_oper.getattr    = myriadfs_getattr;
+                myriadfs_oper.readdir    = myriadfs_readdir;
+                myriadfs_oper.mkdir              = myriadfs_mkdir;
+                myriadfs_oper.open       = myriadfs_open;
+                myriadfs_oper.read       = myriadfs_read;
+                myriadfs_oper.write      = myriadfs_write;
+                myriadfs_oper.create     = myriadfs_create;
+                myriadfs_oper.mknod              = myriadfs_mknod;
+                myriadfs_oper.release    = myriadfs_release;
+                myriadfs_oper.utimens    = myriadfs_utimens;
+                myriadfs_oper.unlink     = myriadfs_unlink;
+                myriadfs_oper.rmdir              = myriadfs_unlink;
+                myriadfs_oper.symlink    = myriadfs_symlink;
+                myriadfs_oper.readlink   = myriadfs_readlink;
+                myriadfs_oper.truncate   = myriadfs_truncate;
+                myriadfs_oper.link               = myriadfs_link;
+                myriadfs_oper.rename     = myriadfs_rename;
+                printf("Starting fuse_main.\n");
+                int iRet = fuse_main( argc, argv, &myriadfs_oper, NULL );
+                printf("Done with fuse_main.\n");
+                delete pFs;
+                delete pF;
+                return iRet;
+        }
+}