inode based API first working version
diff --git a/example/hello_ll.c b/example/hello_ll.c
new file mode 100644
index 0000000..2739e3a
--- /dev/null
+++ b/example/hello_ll.c
@@ -0,0 +1,170 @@
+/*
+ FUSE: Filesystem in Userspace
+ Copyright (C) 2001-2005 Miklos Szeredi <miklos@szeredi.hu>
+
+ This program can be distributed under the terms of the GNU GPL.
+ See the file COPYING.
+*/
+
+#include <fuse_lowlevel.h>
+#include <fuse.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";
+
+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;
+
+ default:
+ return -1;
+ }
+ return 0;
+}
+
+static void hello_ll_getattr(fuse_req_t req, fuse_ino_t ino)
+{
+ struct stat stbuf;
+
+ 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;
+
+ 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);
+ }
+}
+
+struct dirbuf {
+ char *p;
+ size_t size;
+};
+
+static void dirbuf_add(struct dirbuf *b, const char *name, fuse_ino_t ino)
+{
+ struct stat stbuf;
+ size_t oldsize = b->size;
+ b->size += fuse_dirent_size(strlen(name));
+ b->p = realloc(b->p, b->size);
+ memset(&stbuf, 0, sizeof(stbuf));
+ stbuf.st_ino = ino;
+ fuse_add_dirent(b->p + 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(&b, ".", 1);
+ dirbuf_add(&b, "..", 1);
+ dirbuf_add(&b, hello_name, 2);
+ 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)
+{
+ if (ino != 2)
+ 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;
+
+ assert(ino == 2);
+ reply_buf_limited(req, hello_str, strlen(hello_str), off, size);
+}
+
+static struct fuse_ll_operations 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[])
+{
+ const char *mountpoint;
+ struct fuse_ll *f;
+ int err = -1;
+ int fd;
+
+ if (argc != 2) {
+ fprintf(stderr, "usage: %s mountpoint\n", argv[0]);
+ return 1;
+ }
+ mountpoint = argv[1];
+ fd = fuse_mount(mountpoint, NULL);
+ if (fd != -1) {
+ f = fuse_ll_new(fd, "debug", &hello_ll_oper, sizeof(hello_ll_oper));
+ if (f != NULL) {
+ err = fuse_ll_loop(f);
+ fuse_ll_destroy(f);
+ }
+ close(fd);
+ }
+ fuse_unmount(mountpoint);
+
+ return err ? 1 : 0;
+}