From 82982e037dea53b334070699471e682fb023dc9e Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Mon, 12 Dec 2022 13:25:19 +0300
Subject: Support detecting inaccessible/dangling entries in dir_iterator,
 path_search()

---
 tests/dir-iterator/driver.cxx | 13 +++++++++++--
 tests/dir-iterator/testscript | 18 ++++++++++++++++++
 2 files changed, 29 insertions(+), 2 deletions(-)

(limited to 'tests/dir-iterator')

diff --git a/tests/dir-iterator/driver.cxx b/tests/dir-iterator/driver.cxx
index 4a2ff53..92b0b57 100644
--- a/tests/dir-iterator/driver.cxx
+++ b/tests/dir-iterator/driver.cxx
@@ -26,7 +26,7 @@ operator<< (ostream& os, entry_type e)
   return os << entry_type_string[static_cast<size_t> (e)];
 }
 
-// Usage: argv[0] [-v] [-i] <dir>
+// Usage: argv[0] [-v] [-i|-d] <dir>
 //
 // Iterates over a directory filesystem sub-entries, obtains their types and
 // target types for symlinks.
@@ -45,6 +45,7 @@ main (int argc, const char* argv[])
 
   bool verbose (false);
   bool ignore_dangling (false);
+  bool detect_dangling (false);
 
   int i (1);
   for (; i != argc; ++i)
@@ -55,6 +56,8 @@ main (int argc, const char* argv[])
       verbose = true;
     else if (v == "-i")
       ignore_dangling = true;
+    else if (v == "-d")
+      detect_dangling = true;
     else
       break;
   }
@@ -65,11 +68,17 @@ main (int argc, const char* argv[])
     return 1;
   }
 
+  assert (!ignore_dangling || !detect_dangling);
+
   const char* d (argv[i]);
 
   try
   {
-    for (const dir_entry& de: dir_iterator (dir_path (d), ignore_dangling))
+    for (const dir_entry& de:
+           dir_iterator (dir_path (d),
+                         (ignore_dangling ? dir_iterator::ignore_dangling :
+                          detect_dangling ? dir_iterator::detect_dangling :
+                                            dir_iterator::no_follow)))
     {
       entry_type lt (de.ltype ());
       entry_type t (lt == entry_type::symlink ? de.type () : lt);
diff --git a/tests/dir-iterator/testscript b/tests/dir-iterator/testscript
index 30cf6d7..9ecc58b 100644
--- a/tests/dir-iterator/testscript
+++ b/tests/dir-iterator/testscript
@@ -54,6 +54,12 @@ if ($test.target == $build.host)
 
       $*    ../wd >- 2>! != 0 : keep
       $* -i ../wd >'reg     f': skip
+
+      : detect
+      :
+      $* -d ../wd >>~%EOO%
+        %(reg     f|sym unk l)%{2}
+        EOO
     }
 
     : dir
@@ -71,6 +77,12 @@ if ($test.target == $build.host)
 
       $*    ../wd >- 2>! != 0 : keep
       $* -i ../wd >'dir     d': skip
+
+      : detect
+      :
+      $* -d ../wd >>~%EOO%
+        %(dir     d|sym unk l)%{2}
+        EOO
     }
   }
 
@@ -89,5 +101,11 @@ if ($test.target == $build.host)
 
     $*    ../wd >- 2>! != 0 : keep
     $* -i ../wd >'dir     d': skip
+
+      : detect
+      :
+      $* -d ../wd >>~%EOO%
+        %(dir     d|sym unk l)%{2}
+        EOO
   }
 }
-- 
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