trying something

Signed-off-by: Umer Saleem <[email protected]>

module/os/linux/zfs/zfs_ctldir.c

@@ -1126,6 +1126,36 @@ get_dpath(struct path *path, int len, char *full_path)
 	return (error);
 }
 
+static char *
+construct_absolute_path(struct path *path, char *buf, int buflen)
+{
+    char *p;
+    struct dentry *dentry;
+    struct vfsmount *mnt;
+
+    p = buf + buflen - 1;
+    *p = '\0';
+
+    dentry = *current->dentry->d_parent;
+    mnt = path->mnt;
+
+//    while (!IS_ROOT(dentry)) {
+    while (!IS_ROOT(dentry)) {
+    	zfs_dbgmsg("inside loop");
+        int len = dentry->d_name.len;
+        p -= len;
+        if (p < buf) {
+            return ERR_PTR(-ENAMETOOLONG);
+        }
+        memcpy(p, dentry->d_name.name, len);
+        *(--p) = '/';
+        dentry = dentry->d_parent;
+    }
+    zfs_dbgmsg("buf: %s, p: %s", buf, p);
+    return p;
+}
+
+
 static void
 get_global_namespace_path(struct path *path)
 {
@@ -1166,8 +1196,35 @@ get_global_namespace_path(struct path *path)
     zfs_dbgmsg("path in global namespace: %s", p);
 
 	revert_creds(old_cred);
-	put_cred(kern_cred);
+	//put_cred(kern_cred);
 	kmem_free(p, MAXPATHLEN);
+
+    char *init_path_buf;
+    char *chroot_path_buf;
+    char *relative_path;
+    int len;
+
+    // Allocate buffers for the paths
+    init_path_buf = kmem_zalloc(MAXPATHLEN, KM_SLEEP);
+    chroot_path_buf = kmem_zalloc(MAXPATHLEN, KM_SLEEP);
+    relative_path = kmem_zalloc(MAXPATHLEN, KM_SLEEP);
+
+    if (!init_path_buf || !chroot_path_buf || !relative_path) {
+        goto out;
+    }
+
+    // Construct the absolute paths
+    construct_absolute_path(&init->fs->root, init_path_buf, MAXPATHLEN);
+    construct_absolute_path(path, chroot_path_buf, MAXPATHLEN);
+
+    // Calculate the relative path
+    len = snprintf(relative_path, MAXPATHLEN, "%s", chroot_path_buf + strlen(init_path_buf));
+    zfs_dbgmsg("relative path: %s", relative_path);
+
+out:
+    kfree(init_path_buf);
+    kfree(chroot_path_buf);
+    kfree(relative_path);
 }
 
 static int
@@ -1241,6 +1298,7 @@ zfsctl_snapshot_mount(struct path *path, int flags)
 	if (is_current_chrooted()) {
 		zfs_dbgmsg("We are chrooted");
 		get_global_namespace_path(path);
+
 	}
 
 	/*
@@ -1277,7 +1335,7 @@ zfsctl_snapshot_mount(struct path *path, int flags)
 	zfs_dbgmsg("vfs->vfs_mntpoint: %s, full_path: %s, full_name: %s, dfp: %s", zfsvfs->z_vfs->vfs_mntpoint, full_path, full_name, dfp);
 
 	argv[5] = full_name;
-	argv[6] = dfp;
+	argv[6] = full_path;
 	for (int x = 0; x < 8; x++) {
 		if (argv[x] != NULL)
 			zfs_dbgmsg("argv[%d]: %s", x, argv[x]);