Fix returning inode numbers from readdir() in offset==0 mode. (#584)

- Test added for all passthrough examples.
- passthrough.c uses offset==0 mode. The others don't.
- passthrough.c changed to set FUSE_FILL_DIR_PLUS to make the test pass.
- This fixes #583.

1 files changed, 45 insertions, 0 deletions

diff --git a/test/readdir_inode.c b/test/readdir_inode.c
new file mode 100644
index 0000000..7f46c0a
--- /dev/null
+++ b/test/readdir_inode.c
@@ -0,0 +1,45 @@
+/*
+ * Prints each directory entry and its inode as returned by 'readdir'.
+ * Skips '.' and '..' because readdir is not required to return them and
+ * some of our examples don't.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <errno.h>
+
+int main(int argc, char* argv[])
+{
+    DIR* dirp;
+    struct dirent* dent;
+
+    if (argc != 2) {
+        fprintf(stderr, "Usage: readdir_inode dir\n");
+        return 1;
+    }
+
+    dirp = opendir(argv[1]);
+    if (dirp == NULL) {
+        perror("failed to open directory");
+        return 2;
+    }
+
+    errno = 0;
+    dent = readdir(dirp);
+    while (dent != NULL) {
+        if (strcmp(dent->d_name, ".") != 0 && strcmp(dent->d_name, "..") != 0) {
+            printf("%llu %s\n", (unsigned long long)dent->d_ino, dent->d_name);
+        }
+        dent = readdir(dirp);
+    }
+    if (errno != 0) {
+        perror("failed to read directory entry");
+        return 3;
+    }
+
+    closedir(dirp);
+
+    return 0;
+}