make_ext4fs: fix sepolicy lookup for lost+found

selabel_lookup needs the full path including mountpoint.

Change-Id: Idc0641683a4e4528d94e54be1897315bf5fcdb0d

diff --git a/ext4_utils/make_ext4fs.c b/ext4_utils/make_ext4fs.c
index 85dad4e..db6fbe6 100644 (file)
--- a/ext4_utils/make_ext4fs.c
+++ b/ext4_utils/make_ext4fs.c
@@ -215,7 +215,7 @@ static u32 build_directory_structure(const char *full_path, const char *dir_path
                dentries = tmp;
 
                dentries[0].filename = strdup("lost+found");
-               dentries[0].path = strdup("/lost+found");
+               asprintf(&dentries[0].path, "%s/lost+found", dir_path);
                dentries[0].full_path = NULL;
                dentries[0].size = 0;
                dentries[0].mode = S_IRWXU;
@@ -223,9 +223,13 @@ static u32 build_directory_structure(const char *full_path, const char *dir_path
                dentries[0].uid = 0;
                dentries[0].gid = 0;
 #ifdef HAVE_SELINUX
-               if (sehnd)
-                       if (selabel_lookup(sehnd, &dentries[0].secon, "lost+found", dentries[0].mode) < 0)
-                               error("cannot lookup security context for /lost+found");
+               if (sehnd) {
+                       char *sepath = NULL;
+                       asprintf(&sepath, "/%s", dentries[0].path);
+                       if (selabel_lookup(sehnd, &dentries[0].secon, sepath, dentries[0].mode) < 0)
+                               error("cannot lookup security context for %s", dentries[0].path);
+                       free(sepath);
+               }
 #endif
                entries++;
                dirs++;