1、使用ssh客户端，登陆ubuntu ssh-p2206root@127.0.0.1 2、下载fuse源码，进行编译，安装(当前工作目录为~) wgethttps://github.com/libfuse/libfuse/releases/download/fuse-3.0.0rc3/fuse-3.0.0rc3.tar.gztarxvffuse-3.0.0rc
1、使用ssh客户端，登陆ubuntu
ssh -p 2206 root@127.0.0.12、下载fuse源码，进行编译，安装(当前工作目录为~)
3、测试example\hello_ll是否能正常工作
cd example/ ./hello_ll --help ./hello_ll /mnt mount cd /mnt ls cat hello cd umount /mnt针对example\hello_ll.c，进行改动测试：
1、在根目录下多创建一个文件出来，节点号定为5，名称为frombyte，内容为文本"http://www.datahf.net"
改动如下：
/* FUSE: Filesystem in Userspace Copyright (C) 2001-2007 Miklos Szeredi <miklos@szeredi.hu> This program can be distributed under the terms of the GNU GPL. See the file COPYING. */ /** @file * * minimal example filesystem using low-level API * * Compile with: * * gcc -Wall hello_ll.c `pkg-config fuse3 --cflags --libs` -o hello_ll * * ## Source code ## * \include hello_ll.c */ #define FUSE_USE_VERSION 30 #include <config.h> #include <fuse_lowlevel.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <errno.h> #include <fcntl.h> #include <unistd.h> #include <assert.h> static const char *hello_str = "Hello World!\n"; static const char *hello_name = "hello"; //change1 #0 static const char *inode5_str = "http://www.datahf.net!\n"; static const char *inode5_name = "frombyte"; //change end static int hello_stat(fuse_ino_t ino, struct stat *stbuf) { stbuf->st_ino = ino; switch (ino) { case 1: stbuf->st_mode = S_IFDIR | 0755; stbuf->st_nlink = 2; break; case 2: stbuf->st_mode = S_IFREG | 0444; stbuf->st_nlink = 1; stbuf->st_size = strlen(hello_str); break; //change1 #1 case 5: stbuf->st_mode = S_IFREG | 0444; stbuf->st_nlink = 1; stbuf->st_size = strlen(inode5_str); break; //change1 end default: return -1; } return 0; } static void hello_ll_getattr(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi) { struct stat stbuf; (void) fi; memset(&stbuf, 0, sizeof(stbuf)); if (hello_stat(ino, &stbuf) == -1) fuse_reply_err(req, ENOENT); else fuse_reply_attr(req, &stbuf, 1.0); } static void hello_ll_lookup(fuse_req_t req, fuse_ino_t parent, const char *name) { struct fuse_entry_param e; //change1 #2 /* if (parent != 1 || strcmp(name, hello_name) != 0) fuse_reply_err(req, ENOENT); else { memset(&e, 0, sizeof(e)); e.ino = 2; e.attr_timeout = 1.0; e.entry_timeout = 1.0; hello_stat(e.ino, &e.attr); fuse_reply_entry(req, &e); }*/ if (parent != 1) fuse_reply_err(req, ENOENT); else if(strcmp(name, hello_name) == 0){ memset(&e, 0, sizeof(e)); e.ino = 2; e.attr_timeout = 1.0; e.entry_timeout = 1.0; hello_stat(e.ino, &e.attr); fuse_reply_entry(req, &e); } else if(strcmp(name, inode5_name) == 0){ memset(&e, 0, sizeof(e)); e.ino = 5; e.attr_timeout = 1.0; e.entry_timeout = 1.0; hello_stat(e.ino, &e.attr); fuse_reply_entry(req, &e); } else fuse_reply_err(req, ENOENT); //change1 end } struct dirbuf { char *p; size_t size; }; static void dirbuf_add(fuse_req_t req, struct dirbuf *b, const char *name, fuse_ino_t ino) { struct stat stbuf; size_t oldsize = b->size; b->size += fuse_add_direntry(req, NULL, 0, name, NULL, 0); b->p = (char *) realloc(b->p, b->size); memset(&stbuf, 0, sizeof(stbuf)); stbuf.st_ino = ino; fuse_add_direntry(req, b->p + oldsize, b->size - oldsize, name, &stbuf, b->size); } #define min(x, y) ((x) < (y) ? (x) : (y)) static int reply_buf_limited(fuse_req_t req, const char *buf, size_t bufsize, off_t off, size_t maxsize) { if (off < bufsize) return fuse_reply_buf(req, buf + off, min(bufsize - off, maxsize)); else return fuse_reply_buf(req, NULL, 0); } static void hello_ll_readdir(fuse_req_t req, fuse_ino_t ino, size_t size, off_t off, struct fuse_file_info *fi) { (void) fi; if (ino != 1) fuse_reply_err(req, ENOTDIR); else { struct dirbuf b; memset(&b, 0, sizeof(b)); dirbuf_add(req, &b, ".", 1); dirbuf_add(req, &b, "..", 1); dirbuf_add(req, &b, hello_name, 2); //change1 dirbuf_add(req, &b, inode5_name, 5); //end reply_buf_limited(req, b.p, b.size, off, size); free(b.p); } } static void hello_ll_open(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi) { //change1 //if (ino != 2) if ( (ino !=2) && (ino != 5) ) //end fuse_reply_err(req, EISDIR); else if ((fi->flags & 3) != O_RDONLY) fuse_reply_err(req, EACCES); else fuse_reply_open(req, fi); } static void hello_ll_read(fuse_req_t req, fuse_ino_t ino, size_t size, off_t off, struct fuse_file_info *fi) { (void) fi; //change1 //assert(ino == 2); //reply_buf_limited(req, hello_str, strlen(hello_str), off, size); switch (ino) { case 2: reply_buf_limited(req, hello_str, strlen(hello_str), off, size); break; case 5: reply_buf_limited(req, inode5_str, strlen(inode5_str), off, size); break; default: ; } //end } static struct fuse_lowlevel_ops hello_ll_oper = { .lookup = hello_ll_lookup, .getattr = hello_ll_getattr, .readdir = hello_ll_readdir, .open = hello_ll_open, .read = hello_ll_read, }; int main(int argc, char *argv[]) { struct fuse_args args = FUSE_ARGS_INIT(argc, argv); struct fuse_session *se; struct fuse_cmdline_opts opts; int ret = -1; if (fuse_parse_cmdline(&args, &opts) != 0) return 1; if (opts.show_help) { printf("usage: %s [options] <mountpoint>\n\n", argv[0]); fuse_cmdline_help(); fuse_lowlevel_help(); ret = 0; goto err_out1; } else if (opts.show_version) { printf("FUSE library version %s\n", fuse_pkgversion()); fuse_lowlevel_version(); ret = 0; goto err_out1; } se = fuse_session_new(&args, &hello_ll_oper, sizeof(hello_ll_oper), NULL); if (se == NULL) goto err_out1; if (fuse_set_signal_handlers(se) != 0) goto err_out2; if (fuse_session_mount(se, opts.mountpoint) != 0) goto err_out3; fuse_daemonize(opts.foreground); /* Block until ctrl+c or fusermount -u */ if (opts.singlethread) ret = fuse_session_loop(se); else ret = fuse_session_loop_mt(se, opts.clone_fd); fuse_session_unmount(se); err_out3: fuse_remove_signal_handlers(se); err_out2: fuse_session_destroy(se); err_out1: free(opts.mountpoint); fuse_opt_free_args(&args); return ret ? 1 : 0; }结果测试：
cd ~/fuse-3.0.0rc3/example/ make ./hello_ll /mnt ll -i /mnt cat /mnt/frombyte umount /mnt2、增加目录、增加二进制文件测试：
/* FUSE: Filesystem in Userspace Copyright (C) 2001-2007 Miklos Szeredi <miklos@szeredi.hu> This program can be distributed under the terms of the GNU GPL. See the file COPYING. */ /** @file * * minimal example filesystem using low-level API * * Compile with: * * gcc -Wall hello_ll.c `pkg-config fuse3 --cflags --libs` -o hello_ll * * ## Source code ## * \include hello_ll.c */ #define FUSE_USE_VERSION 30 #include <config.h> #include <fuse_lowlevel.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <errno.h> #include <fcntl.h> #include <unistd.h> #include <assert.h> static const char *hello_str = "Hello World!\n"; static const char *hello_name = "hello"; //change1 #0 static const char *inode5_str = "http://www.datahf.net!\n"; static const char *inode5_name = "frombyte"; static const char *inode3_name = "frombyte.dir"; static const char *inode6_name = "inode6.img"; //change end static int hello_stat(fuse_ino_t ino, struct stat *stbuf) { stbuf->st_ino = ino; switch (ino) { case 1: stbuf->st_mode = S_IFDIR | 0755; stbuf->st_nlink = 3; break; case 2: stbuf->st_mode = S_IFREG | 0444; stbuf->st_nlink = 1; stbuf->st_size = strlen(hello_str); break; //change1 #1 case 3: stbuf->st_mode = S_IFDIR | 0755; stbuf->st_nlink = 2; break; case 5: stbuf->st_mode = S_IFREG | 0444; stbuf->st_nlink = 1; stbuf->st_size = strlen(inode5_str); break; case 6: stbuf->st_mode = S_IFREG | 0444; stbuf->st_nlink = 1; stbuf->st_size = 1024 * 1024 * 1024; break; //change1 end default: return -1; } return 0; } static void hello_ll_getattr(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi) { struct stat stbuf; (void) fi; memset(&stbuf, 0, sizeof(stbuf)); if (hello_stat(ino, &stbuf) == -1) fuse_reply_err(req, ENOENT); else fuse_reply_attr(req, &stbuf, 1.0); } static void hello_ll_lookup(fuse_req_t req, fuse_ino_t parent, const char *name) { struct fuse_entry_param e; //change1 #2 /* if (parent != 1 || strcmp(name, hello_name) != 0) fuse_reply_err(req, ENOENT); else { memset(&e, 0, sizeof(e)); e.ino = 2; e.attr_timeout = 1.0; e.entry_timeout = 1.0; hello_stat(e.ino, &e.attr); fuse_reply_entry(req, &e); }*/ switch (parent) { case 1: if(strcmp(name, hello_name) == 0){ memset(&e, 0, sizeof(e)); e.ino = 2; e.attr_timeout = 1.0; e.entry_timeout = 1.0; hello_stat(e.ino, &e.attr); fuse_reply_entry(req, &e); } else if(strcmp(name, inode3_name) == 0){ memset(&e, 0, sizeof(e)); e.ino = 3; e.attr_timeout = 1.0; e.entry_timeout = 1.0; hello_stat(e.ino, &e.attr); fuse_reply_entry(req, &e); } else fuse_reply_err(req, ENOENT); break; case 3: if(strcmp(name, inode5_name) == 0){ memset(&e, 0, sizeof(e)); e.ino = 5; e.attr_timeout = 1.0; e.entry_timeout = 1.0; hello_stat(e.ino, &e.attr); fuse_reply_entry(req, &e); } else if(strcmp(name, inode6_name) == 0){ memset(&e, 0, sizeof(e)); e.ino = 6; e.attr_timeout = 1.0; e.entry_timeout = 1.0; hello_stat(e.ino, &e.attr); fuse_reply_entry(req, &e); } else fuse_reply_err(req, ENOENT); break; default: fuse_reply_err(req, ENOENT); break; } //change1 end } struct dirbuf { char *p; size_t size; }; static void dirbuf_add(fuse_req_t req, struct dirbuf *b, const char *name, fuse_ino_t ino) { struct stat stbuf; size_t oldsize = b->size; b->size += fuse_add_direntry(req, NULL, 0, name, NULL, 0); b->p = (char *) realloc(b->p, b->size); memset(&stbuf, 0, sizeof(stbuf)); stbuf.st_ino = ino; fuse_add_direntry(req, b->p + oldsize, b->size - oldsize, name, &stbuf, b->size); } #define min(x, y) ((x) < (y) ? (x) : (y)) static int reply_buf_limited(fuse_req_t req, const char *buf, size_t bufsize, off_t off, size_t maxsize) { if (off < bufsize) return fuse_reply_buf(req, buf + off, min(bufsize - off, maxsize)); else return fuse_reply_buf(req, NULL, 0); } static void hello_ll_readdir(fuse_req_t req, fuse_ino_t ino, size_t size, off_t off, struct fuse_file_info *fi) { (void) fi; /* if (ino != 1) fuse_reply_err(req, ENOTDIR); else {*/ struct dirbuf b; switch (ino) { case 1: memset(&b, 0, sizeof(b)); dirbuf_add(req, &b, ".", 1); dirbuf_add(req, &b, "..", 1); dirbuf_add(req, &b, hello_name, 2); //change1 dirbuf_add(req, &b, inode3_name, 3); //end reply_buf_limited(req, b.p, b.size, off, size); free(b.p); break; case 3: memset(&b, 0, sizeof(b)); dirbuf_add(req, &b, ".", 3); dirbuf_add(req, &b, "..", 1); dirbuf_add(req, &b, inode5_name, 5); dirbuf_add(req, &b, inode6_name, 6); reply_buf_limited(req, b.p, b.size, off, size); free(b.p); break; default: fuse_reply_err(req, ENOTDIR); break; } //} } static void hello_ll_open(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi) { //change1 //if (ino != 2) switch(ino) { case 2:case 5:case 6: if ((fi->flags & 3) != O_RDONLY) fuse_reply_err(req, EACCES); else fuse_reply_open(req, fi); break; default: fuse_reply_err(req, EISDIR); break; } } static void hello_ll_read(fuse_req_t req, fuse_ino_t ino, size_t size, off_t off, struct fuse_file_info *fi) { (void) fi; char * tbuf; //change1 //assert(ino == 2); //reply_buf_limited(req, hello_str, strlen(hello_str), off, size); switch (ino) { case 2: reply_buf_limited(req, hello_str, strlen(hello_str), off, size); break; case 5: reply_buf_limited(req, inode5_str, strlen(inode5_str), off, size); break; case 6: tbuf = (char *)malloc(size); for(int i = 0; i < size / sizeof(int); i++) ((int*)tbuf)[i] = size; fuse_reply_buf(req, tbuf,size); free(tbuf); default: ; } //end } static struct fuse_lowlevel_ops hello_ll_oper = { .lookup = hello_ll_lookup, .getattr = hello_ll_getattr, .readdir = hello_ll_readdir, .open = hello_ll_open, .read = hello_ll_read, }; int main(int argc, char *argv[]) { struct fuse_args args = FUSE_ARGS_INIT(argc, argv); struct fuse_session *se; struct fuse_cmdline_opts opts; int ret = -1; if (fuse_parse_cmdline(&args, &opts) != 0) return 1; if (opts.show_help) { printf("usage: %s [options] <mountpoint>\n\n", argv[0]); fuse_cmdline_help(); fuse_lowlevel_help(); ret = 0; goto err_out1; } else if (opts.show_version) { printf("FUSE library version %s\n", fuse_pkgversion()); fuse_lowlevel_version(); ret = 0; goto err_out1; } se = fuse_session_new(&args, &hello_ll_oper, sizeof(hello_ll_oper), NULL); if (se == NULL) goto err_out1; if (fuse_set_signal_handlers(se) != 0) goto err_out2; if (fuse_session_mount(se, opts.mountpoint) != 0) goto err_out3; fuse_daemonize(opts.foreground); /* Block until ctrl+c or fusermount -u */ if (opts.singlethread) ret = fuse_session_loop(se); else ret = fuse_session_loop_mt(se, opts.clone_fd); fuse_session_unmount(se); err_out3: fuse_remove_signal_handlers(se); err_out2: fuse_session_destroy(se); err_out1: free(opts.mountpoint); fuse_opt_free_args(&args); return ret ? 1 : 0; }3、fuse的根节点号是1，在源码中是以常量的方式定义的，本来想改成变量，估计工作量和稳定性会有麻烦，变通处理吧。
4、修改代码，实现自定义文件生成
/* FUSE: Filesystem in Userspace Copyright (C) 2001-2007 Miklos Szeredi <miklos@szeredi.hu> This program can be distributed under the terms of the GNU GPL. See the file COPYING. */ /** @file * * minimal example filesystem using low-level API * * Compile with: * * gcc -Wall hello_ll.c `pkg-config fuse3 --cflags --libs` -o hello_ll * * ## Source code ## * \include hello_ll.c */ /*change2: 定义一个idx文件，格式为typedef struct Str_idx { int low_off; short hige_off; short fileid; }str_idx; 按每8字节一个索引的方式组合某个镜像文件，文件ID为0表示自由，用字符'F'填充。 文件ID为1，表示使用当前目录下的$MFT文件做为数据源进行加工。 测试代码，至少还需补全： 1、配置文件(文件大小、源文件路径等)的参数指定 2、idx结构的准确大小(int,short和机器位长有关系，需修改为与机器位长无关的数据类型) 3、排错：文件打不开 4、排错：文件大小与idx不符 5、排错：文件溢出处理 6、修改缓冲机制，不能先把源文件全读到内存，需要建立缓冲机制，应对读函数，或者简单地用fopen加缓冲处理。 by www.datahf.net 张宇 */ #define FUSE_USE_VERSION 30 #include <config.h> #include <fuse_lowlevel.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <errno.h> #include <fcntl.h> #include <unistd.h> #include <assert.h> #include <string.h> static const char *hello_str = "Hello World!\n"; static const char *hello_name = "hello"; //change1 #0 static const char *inode5_str = "http://www.datahf.net!\n"; static const char *inode5_name = "frombyte"; static const char *inode3_name = "frombyte.dir"; static const char *inode6_name = "inode6.img"; unsigned char *databuf; #define INODE6_SIZE (1024*1024*4) //change end static int hello_stat(fuse_ino_t ino, struct stat *stbuf) { stbuf->st_ino = ino; switch (ino) { case 1: stbuf->st_mode = S_IFDIR | 0755; stbuf->st_nlink = 3; break; case 2: stbuf->st_mode = S_IFREG | 0444; stbuf->st_nlink = 1; stbuf->st_size = strlen(hello_str); break; //change1 #1 case 3: stbuf->st_mode = S_IFDIR | 0755; stbuf->st_nlink = 2; break; case 5: stbuf->st_mode = S_IFREG | 0444; stbuf->st_nlink = 1; stbuf->st_size = strlen(inode5_str); break; case 6: stbuf->st_mode = S_IFREG | 0444; stbuf->st_nlink = 1; stbuf->st_size = INODE6_SIZE; break; //change1 end default: return -1; } return 0; } static void hello_ll_getattr(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi) { struct stat stbuf; (void) fi; memset(&stbuf, 0, sizeof(stbuf)); if (hello_stat(ino, &stbuf) == -1) fuse_reply_err(req, ENOENT); else fuse_reply_attr(req, &stbuf, 1.0); } static void hello_ll_lookup(fuse_req_t req, fuse_ino_t parent, const char *name) { struct fuse_entry_param e; //change1 #2 /* if (parent != 1 || strcmp(name, hello_name) != 0) fuse_reply_err(req, ENOENT); else { memset(&e, 0, sizeof(e)); e.ino = 2; e.attr_timeout = 1.0; e.entry_timeout = 1.0; hello_stat(e.ino, &e.attr); fuse_reply_entry(req, &e); }*/ switch (parent) { case 1: if(strcmp(name, hello_name) == 0){ memset(&e, 0, sizeof(e)); e.ino = 2; e.attr_timeout = 1.0; e.entry_timeout = 1.0; hello_stat(e.ino, &e.attr); fuse_reply_entry(req, &e); } else if(strcmp(name, inode3_name) == 0){ memset(&e, 0, sizeof(e)); e.ino = 3; e.attr_timeout = 1.0; e.entry_timeout = 1.0; hello_stat(e.ino, &e.attr); fuse_reply_entry(req, &e); } else fuse_reply_err(req, ENOENT); break; case 3: if(strcmp(name, inode5_name) == 0){ memset(&e, 0, sizeof(e)); e.ino = 5; e.attr_timeout = 1.0; e.entry_timeout = 1.0; hello_stat(e.ino, &e.attr); fuse_reply_entry(req, &e); } else if(strcmp(name, inode6_name) == 0){ memset(&e, 0, sizeof(e)); e.ino = 6; e.attr_timeout = 1.0; e.entry_timeout = 1.0; hello_stat(e.ino, &e.attr); fuse_reply_entry(req, &e); } else fuse_reply_err(req, ENOENT); break; default: fuse_reply_err(req, ENOENT); break; } //change1 end } struct dirbuf { char *p; size_t size; }; //change2 typedef struct Str_idx { int low_off; short hige_off; short fileid; }str_idx; static void dirbuf_add(fuse_req_t req, struct dirbuf *b, const char *name, fuse_ino_t ino) { struct stat stbuf; size_t oldsize = b->size; b->size += fuse_add_direntry(req, NULL, 0, name, NULL, 0); b->p = (char *) realloc(b->p, b->size); memset(&stbuf, 0, sizeof(stbuf)); stbuf.st_ino = ino; fuse_add_direntry(req, b->p + oldsize, b->size - oldsize, name, &stbuf, b->size); } #define min(x, y) ((x) < (y) ? (x) : (y)) static int reply_buf_limited(fuse_req_t req, const char *buf, size_t bufsize, off_t off, size_t maxsize) { if (off < bufsize) return fuse_reply_buf(req, buf + off, min(bufsize - off, maxsize)); else return fuse_reply_buf(req, NULL, 0); } static void hello_ll_readdir(fuse_req_t req, fuse_ino_t ino, size_t size, off_t off, struct fuse_file_info *fi) { (void) fi; /* if (ino != 1) fuse_reply_err(req, ENOTDIR); else {*/ struct dirbuf b; switch (ino) { case 1: memset(&b, 0, sizeof(b)); dirbuf_add(req, &b, ".", 1); dirbuf_add(req, &b, "..", 1); dirbuf_add(req, &b, hello_name, 2); //change1 dirbuf_add(req, &b, inode3_name, 3); //end reply_buf_limited(req, b.p, b.size, off, size); free(b.p); break; case 3: memset(&b, 0, sizeof(b)); dirbuf_add(req, &b, ".", 3); dirbuf_add(req, &b, "..", 1); dirbuf_add(req, &b, inode5_name, 5); dirbuf_add(req, &b, inode6_name, 6); reply_buf_limited(req, b.p, b.size, off, size); free(b.p); break; default: fuse_reply_err(req, ENOTDIR); break; } //} } static void hello_ll_open(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi) { //change1 //if (ino != 2) switch(ino) { case 2:case 5:case 6: if ((fi->flags & 3) != O_RDONLY) fuse_reply_err(req, EACCES); else fuse_reply_open(req, fi); break; default: fuse_reply_err(req, EISDIR); break; } } static void hello_ll_read(fuse_req_t req, fuse_ino_t ino, size_t size, off_t off, struct fuse_file_info *fi) { (void) fi; //change1 //assert(ino == 2); //reply_buf_limited(req, hello_str, strlen(hello_str), off, size); switch (ino) { case 2: reply_buf_limited(req, hello_str, strlen(hello_str), off, size); break; case 5: reply_buf_limited(req, inode5_str, strlen(inode5_str), off, size); break; case 6: fuse_reply_buf(req, databuf + off,size); default: ; } //end } static struct fuse_lowlevel_ops hello_ll_oper = { .lookup = hello_ll_lookup, .getattr = hello_ll_getattr, .readdir = hello_ll_readdir, .open = hello_ll_open, .read = hello_ll_read, }; int main(int argc, char *argv[]) { struct fuse_args args = FUSE_ARGS_INIT(argc, argv); struct fuse_session *se; struct fuse_cmdline_opts opts; int ret = -1; if (fuse_parse_cmdline(&args, &opts) != 0) return 1; if (opts.show_help) { printf("usage: %s [options] <mountpoint>\n\n", argv[0]); fuse_cmdline_help(); fuse_lowlevel_help(); ret = 0; goto err_out1; } else if (opts.show_version) { printf("FUSE library version %s\n", fuse_pkgversion()); fuse_lowlevel_version(); ret = 0; goto err_out1; } //change2 FILE *f_idx,*f_img; f_idx = fopen("./1.idx","rb"); f_img = fopen("./$MFT","rb"); if ( (f_idx == -1) || (f_img == -1) ) { printf("f_idx is %d\nf_img is %d\n",f_idx,f_img); goto err_out1; } size_t s_idx,s_img; s_idx = 512; unsigned char idx_buf[512]; databuf = NULL; databuf = (char *)malloc(INODE6_SIZE); fread(idx_buf,512,1,f_idx); int i=0; struct Str_idx * tidx; tidx = (struct Str_idx*) idx_buf; for(i=0;i<4;i++) { if(tidx[i].fileid == 0) memset(databuf+ i * 1024 * 1024,'F',1024*1024); else if(tidx[i].fileid == 1) { fseek(f_img, tidx[i].low_off * 1024 * 1024 + tidx[i].hige_off * 1024 * 1024, SEEK_SET); fread(databuf + i * 1024 * 1024,1024*1024,1,f_img); } else ; printf("#i:%d,%d,%d\n",tidx[i].low_off,tidx[i].hige_off,tidx[i].fileid); } se = fuse_session_new(&args, &hello_ll_oper, sizeof(hello_ll_oper), NULL); if (se == NULL) goto err_out1; if (fuse_set_signal_handlers(se) != 0) goto err_out2; if (fuse_session_mount(se, opts.mountpoint) != 0) goto err_out3; fuse_daemonize(opts.foreground); /* Block until ctrl+c or fusermount -u */ if (opts.singlethread) ret = fuse_session_loop(se); else ret = fuse_session_loop_mt(se, opts.clone_fd); fuse_session_unmount(se); err_out3: fuse_remove_signal_handlers(se); err_out2: fuse_session_destroy(se); err_out1: free(opts.mountpoint); fuse_opt_free_args(&args); return ret ? 1 : 0; }待续