21#define FUSE_USE_VERSION FUSE_MAKE_VERSION(3, 12)
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);
56static void hello_ll_init(
void *userdata,
struct fuse_conn_info *conn)
71 memset(&stbuf, 0,
sizeof(stbuf));
72 if (hello_stat(ino, &stbuf) == -1)
82 if (parent != 1 || strcmp(name, hello_name) != 0)
85 memset(&e, 0,
sizeof(e));
88 e.entry_timeout = 1.0;
89 hello_stat(e.ino, &e.attr);
100static void dirbuf_add(
fuse_req_t req,
struct dirbuf *b,
const char *name,
104 size_t oldsize = b->size;
106 b->p = (
char *) realloc(b->p, b->size);
107 memset(&stbuf, 0,
sizeof(stbuf));
113#define min(x, y) ((x) < (y) ? (x) : (y))
115static int reply_buf_limited(
fuse_req_t req,
const char *buf,
size_t bufsize,
116 off_t off,
size_t maxsize)
120 min(bufsize - off, maxsize));
135 memset(&b, 0,
sizeof(b));
136 dirbuf_add(req, &b,
".", 1);
137 dirbuf_add(req, &b,
"..", 1);
138 dirbuf_add(req, &b, hello_name, 2);
139 reply_buf_limited(req, b.p, b.size, off, size);
149 else if ((fi->
flags & O_ACCMODE) != O_RDONLY)
161 reply_buf_limited(req, hello_str, strlen(hello_str), off, size);
168 assert(ino == 1 || ino == 2);
169 if (strcmp(name,
"hello_ll_getxattr_name") == 0)
171 const char *buf =
"hello_ll_getxattr_value";
181 const char *value,
size_t size,
int flags)
185 assert(ino == 1 || ino == 2);
186 const char* exp_val =
"hello_ll_setxattr_value";
187 if (strcmp(name,
"hello_ll_setxattr_name") == 0 &&
188 strlen(exp_val) == size &&
189 strncmp(value, exp_val, size) == 0)
201 assert(ino == 1 || ino == 2);
202 if (strcmp(name,
"hello_ll_removexattr_name") == 0)
213 .
init = hello_ll_init,
214 .lookup = hello_ll_lookup,
215 .getattr = hello_ll_getattr,
216 .readdir = hello_ll_readdir,
217 .open = hello_ll_open,
218 .read = hello_ll_read,
219 .setxattr = hello_ll_setxattr,
220 .getxattr = hello_ll_getxattr,
221 .removexattr = hello_ll_removexattr,
224int main(
int argc,
char *argv[])
227 struct fuse_session *se;
232 if (fuse_parse_cmdline(&args, &opts) != 0)
234 if (opts.show_help) {
235 printf(
"usage: %s [options] <mountpoint>\n\n", argv[0]);
240 }
else if (opts.show_version) {
247 if(opts.mountpoint == NULL) {
248 printf(
"usage: %s [options] <mountpoint>\n", argv[0]);
249 printf(
" %s --help\n", argv[0]);
254 se = fuse_session_new(&args, &hello_ll_oper,
255 sizeof(hello_ll_oper), NULL);
268 if (opts.singlethread)
271 config = fuse_loop_cfg_create();
272 fuse_loop_cfg_set_clone_fd(config, opts.clone_fd);
273 fuse_loop_cfg_set_max_threads(config, opts.max_threads);
274 ret = fuse_session_loop_mt(se, config);
275 fuse_loop_cfg_destroy(config);
285 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)
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(* init)(void *userdata, struct fuse_conn_info *conn)