From 8fcfebe3f911690d0613c3705b684fd9d7d7f569 Mon Sep 17 00:00:00 2001
From: fedir <f.kovalyoff@tutanota.de>
Date: Wed, 20 Nov 2024 10:32:33 +0100
Subject: [PATCH] Implemented getattr and source_stat.

Now filesystem implements getattr through source_stat,
which is a wrapper for an fstatat with
`dirfd == handle.root_path`.
---
 sources/main.c     | 28 ++++++++++++++++++++++++++++
 sources/sourcefs.c |  9 ++++++++-
 sources/sourcefs.h |  9 +++++++++
 3 files changed, 45 insertions(+), 1 deletion(-)

diff --git a/sources/main.c b/sources/main.c
index 133f13d..a625b69 100644
--- a/sources/main.c
+++ b/sources/main.c
@@ -20,8 +20,36 @@ static void *icfs_init(struct fuse_conn_info *conn, struct fuse_config *cfg) {
   return NULL;
 }
 
+static int icfs_getattr(const char *path, struct stat *stbuf,
+                        struct fuse_file_info *fi) {
+
+  int statret = source_stat(path, stbuf);
+
+  //(void)fi;
+
+  /*
+  int res = 0;
+
+  memset(stbuf, 0, sizeof(struct stat));
+  if (strcmp(path, "/") == 0) {
+    stbuf->st_mode = S_IFDIR | 0755;
+    stbuf->st_nlink = 2;
+  } else if (strcmp(path + 1, options.filename) == 0) {
+    stbuf->st_mode = S_IFREG | 0444;
+    stbuf->st_nlink = 1;
+    stbuf->st_size = strlen(options.contents);
+  } else
+    res = -ENOENT;
+
+  */
+  // return res;
+
+  return statret;
+}
+
 static const struct fuse_operations icfs_oper = {
     .init = icfs_init,
+    .getattr = icfs_getattr,
 };
 
 int main(int argc, char *argv[]) {
diff --git a/sources/sourcefs.c b/sources/sourcefs.c
index 0d26955..41a625d 100644
--- a/sources/sourcefs.c
+++ b/sources/sourcefs.c
@@ -1,8 +1,9 @@
 #define _GNU_SOURCE
 
 #include "sourcefs.h"
-
 #include <fcntl.h>
+#include <stdio.h>
+#include <sys/stat.h>
 
 static struct source_files_handle {
   int root_fd;
@@ -19,3 +20,9 @@ int source_init(const char *root_path) {
 
   return 0;
 }
+
+// Currently this literally is a fstatat wrapper.
+int source_stat(const char *restrict pathname, struct stat *restrict statbuf) {
+  int statret = fstatat(handle.root_fd, pathname, statbuf, 0);
+  return statret;
+}
diff --git a/sources/sourcefs.h b/sources/sourcefs.h
index e5ff4dc..4b1a0e8 100644
--- a/sources/sourcefs.h
+++ b/sources/sourcefs.h
@@ -3,6 +3,8 @@
 #ifndef SOURCEFS_H
 #define SOURCEFS_H
 
+#include <sys/stat.h>
+
 /**
  * Initializes the source file handling.
  *
@@ -11,4 +13,11 @@
  */
 int source_init(const char *root_path);
 
+/**
+ * `stat()`, but for source files.
+ *
+ * @see `stat()`
+ */
+int source_stat(const char *restrict pathname, struct stat *restrict statbuf);
+
 #endif // !SOURCEFS_H