src/libadacl.c: add a special case for the path ".." as an argument.

In a similar vein, the path ".." needs special-case handling when
opening its parent and child file descriptots. With the special-case
added, the test suite once again passes.

diff --git a/src/libadacl.c b/src/libadacl.c
index a43afa5c1b203a63e7d905296a56719fa0a43d49..911e69ae3022736eab1f30e1e463b7bd18188e73 100644 (file)
--- a/src/libadacl.c
+++ b/src/libadacl.c
@@ -1016,6 +1016,9 @@ int apply_default_acl(const char* path, bool recursive) {
   if (strcmp(path, ".") == 0 && strcmp(parent, ".") == 0) {
     parent_fd = safe_open("..", O_DIRECTORY | O_NOFOLLOW);
   }
+  else if (strcmp(path, "..") == 0 && strcmp(parent, ".") == 0) {
+    parent_fd = safe_open("../..", O_DIRECTORY | O_NOFOLLOW);
+  }
   else {
     parent_fd = safe_open(parent, O_DIRECTORY | O_NOFOLLOW);
   }
@@ -1050,6 +1053,9 @@ int apply_default_acl(const char* path, bool recursive) {
   if (strcmp(path, ".") == 0 && strcmp(parent, ".") == 0) {
     fd = open(".", O_NOFOLLOW);
   }
+  else if (strcmp(path, "..") == 0 && strcmp(parent, ".") == 0) {
+    fd = open("..", O_NOFOLLOW);
+  }
   else {
     fd = openat(parent_fd, basename(basename_path_copy), O_NOFOLLOW);
   }