21#define FUSE_USE_VERSION 34 
   32static const char *hello_str = 
"Hello World!\n";
 
   33static const char *hello_name = 
"hello";
 
   35static int hello_stat(
fuse_ino_t ino, 
struct stat *stbuf)
 
   40                stbuf->st_mode = S_IFDIR | 0755;
 
   45                stbuf->st_mode = S_IFREG | 0444;
 
   47                stbuf->st_size = strlen(hello_str);
 
   63        memset(&stbuf, 0, 
sizeof(stbuf));
 
   64        if (hello_stat(ino, &stbuf) == -1)
 
   74        if (parent != 1 || strcmp(name, hello_name) != 0)
 
   77                memset(&e, 0, 
sizeof(e));
 
   80                e.entry_timeout = 1.0;
 
   81                hello_stat(e.ino, &e.attr);
 
   92static void dirbuf_add(
fuse_req_t req, 
struct dirbuf *b, 
const char *name,
 
   96        size_t oldsize = b->size;
 
   98        b->p = (
char *) realloc(b->p, b->size);
 
   99        memset(&stbuf, 0, 
sizeof(stbuf));
 
  105#define min(x, y) ((x) < (y) ? (x) : (y)) 
  107static int reply_buf_limited(
fuse_req_t req, 
const char *buf, 
size_t bufsize,
 
  108                             off_t off, 
size_t maxsize)
 
  112                                      min(bufsize - off, maxsize));
 
  127                memset(&b, 0, 
sizeof(b));
 
  128                dirbuf_add(req, &b, 
".", 1);
 
  129                dirbuf_add(req, &b, 
"..", 1);
 
  130                dirbuf_add(req, &b, hello_name, 2);
 
  131                reply_buf_limited(req, b.p, b.size, off, size);
 
  141        else if ((fi->
flags & O_ACCMODE) != O_RDONLY)
 
  153        reply_buf_limited(req, hello_str, strlen(hello_str), off, size);
 
  161        if (strcmp(name, 
"hello_ll_getxattr_name") == 0)
 
  163                const char *buf = 
"hello_ll_getxattr_value";
 
  173                                                          const char *value, 
size_t size, 
int flags)
 
  178        const char* exp_val = 
"hello_ll_setxattr_value";
 
  179        if (strcmp(name, 
"hello_ll_setxattr_name") == 0 &&
 
  180            strlen(exp_val) == size &&
 
  181            strncmp(value, exp_val, size) == 0)
 
  194        if (strcmp(name, 
"hello_ll_removexattr_name") == 0)
 
  205        .
lookup = hello_ll_lookup,
 
  206        .getattr = hello_ll_getattr,
 
  207        .readdir = hello_ll_readdir,
 
  208        .open = hello_ll_open,
 
  209        .read = hello_ll_read,
 
  210        .setxattr = hello_ll_setxattr,
 
  211        .getxattr = hello_ll_getxattr,
 
  212        .removexattr = hello_ll_removexattr,
 
  215int main(
int argc, 
char *argv[])
 
  218        struct fuse_session *se;
 
  223        if (fuse_parse_cmdline(&args, &opts) != 0)
 
  225        if (opts.show_help) {
 
  226                printf(
"usage: %s [options] <mountpoint>\n\n", argv[0]);
 
  231        } 
else if (opts.show_version) {
 
  238        if(opts.mountpoint == NULL) {
 
  239                printf(
"usage: %s [options] <mountpoint>\n", argv[0]);
 
  240                printf(
"       %s --help\n", argv[0]);
 
  246                              sizeof(hello_ll_oper), NULL);
 
  259        if (opts.singlethread)
 
  262                config.clone_fd = opts.clone_fd;
 
  263                config.max_idle_threads = opts.max_idle_threads;
 
  264                ret = fuse_session_loop_mt(se, &config);
 
  273        free(opts.mountpoint);
 
int fuse_set_signal_handlers(struct fuse_session *se)
const char * fuse_pkgversion(void)
void fuse_remove_signal_handlers(struct fuse_session *se)
int fuse_daemonize(int foreground)
void fuse_session_destroy(struct fuse_session *se)
int fuse_reply_open(fuse_req_t req, const struct fuse_file_info *fi)
int fuse_reply_err(fuse_req_t req, int err)
int fuse_reply_buf(fuse_req_t req, const char *buf, size_t size)
struct fuse_req * fuse_req_t
int fuse_session_loop(struct fuse_session *se)
int fuse_reply_entry(fuse_req_t req, const struct fuse_entry_param *e)
void fuse_session_unmount(struct fuse_session *se)
void fuse_cmdline_help(void)
struct fuse_session * fuse_session_new(struct fuse_args *args, const struct fuse_lowlevel_ops *op, size_t op_size, void *userdata)
void fuse_lowlevel_help(void)
int fuse_session_mount(struct fuse_session *se, const char *mountpoint)
void fuse_lowlevel_version(void)
size_t fuse_add_direntry(fuse_req_t req, char *buf, size_t bufsize, const char *name, const struct stat *stbuf, off_t off)
int fuse_reply_attr(fuse_req_t req, const struct stat *attr, double attr_timeout)
void fuse_opt_free_args(struct fuse_args *args)
#define FUSE_ARGS_INIT(argc, argv)
void(* lookup)(fuse_req_t req, fuse_ino_t parent, const char *name)