libfuse: implement readdirplus for high-level API

Reuse the old "readdir" callback, but add a flags argument, that has
FUSE_READDIR_PLUS in case this is a "plus" version.  Filesystems can safely
ignore this flag, but if they want they can add optimizations based on it:
i.e. only retrieve the full attributes in PLUS mode.

The filler function is also given a flags argument and the filesystem can
set FUSE_FILL_DIR_PLUS if all the attributes in "stat" are valid.

1 files changed, 4 insertions, 2 deletions

diff --git a/example/fusexmp.c b/example/fusexmp.c
index 6f63ae9..fe20f57 100755
--- a/example/fusexmp.c
+++ b/example/fusexmp.c
@@ -81,13 +81,15 @@ static int xmp_readlink(const char *path, char *buf, size_t size)
 
 
 static int xmp_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
-		       off_t offset, struct fuse_file_info *fi)
+		       off_t offset, struct fuse_file_info *fi,
+		       enum fuse_readdir_flags flags)
 {
 	DIR *dp;
 	struct dirent *de;
 
 	(void) offset;
 	(void) fi;
+	(void) flags;
 
 	dp = opendir(path);
 	if (dp == NULL)
@@ -98,7 +100,7 @@ static int xmp_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
 		memset(&st, 0, sizeof(st));
 		st.st_ino = de->d_ino;
 		st.st_mode = de->d_type << 12;
-		if (filler(buf, de->d_name, &st, 0))
+		if (filler(buf, de->d_name, &st, 0, 0))
 			break;
 	}