File bsc1202436-1.patch of Package tar.31894

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File bsc1202436-1.patch of Package tar.31894

From edf38d13a47becec81b2c3a2b74f54771e1cbee4 Mon Sep 17 00:00:00 2001
From: Sergey Poznyakoff <gray@gnu.org>
Date: Sat, 11 Feb 2023 13:03:23 +0200
Subject: Prevent dead loop in extract_file

* src/extract.c (maybe_recoverable): If make_directories indicates
success, suppose some intermediate directories have been made, even
if in fact they have not.  That's necessary to avoid dead loops when
maybe_recoverable is called with the same arguments again.
---
 src/extract.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/src/extract.c b/src/extract.c
index 2d43947..aec5de6 100644
--- a/src/extract.c
+++ b/src/extract.c
@@ -682,7 +682,7 @@ fixup_delayed_set_stat (char const *src, char const *dst)
    directories were created, nonzero (issuing a diagnostic) otherwise.
    Set *INTERDIR_MADE if at least one directory was created.  */
 static int
-make_directories (char *file_name, bool *interdir_made)
+make_directories (char *file_name)
 {
   char *cursor0 = file_name + FILE_SYSTEM_PREFIX_LEN (file_name);
   char *cursor;	        	/* points into the file name */
@@ -726,7 +726,6 @@ make_directories (char *file_name, bool *interdir_made)
 			  desired_mode, AT_SYMLINK_NOFOLLOW);
 
 	  print_for_mkdir (file_name, cursor - file_name, desired_mode);
-	  *interdir_made = true;
 	  parent_end = NULL;
 	}
       else
@@ -882,8 +881,11 @@ maybe_recoverable (char *file_name, bool regular, bool *interdir_made)
 
     case ENOENT:
       /* Attempt creating missing intermediate directories. */
-      if (make_directories (file_name, interdir_made) == 0)
-	return RECOVER_OK;
+      if (make_directories (file_name) == 0)
+	{
+	  *interdir_made = true;
+	  return RECOVER_OK;
+	}
       break;
 
     default:
@@ -1985,12 +1987,11 @@ rename_directory (char *src, char *dst)
   else
     {
       int e = errno;
-      bool interdir_made;
 
       switch (e)
 	{
 	case ENOENT:
-	  if (make_directories (dst, &interdir_made) == 0)
+	  if (make_directories (dst) == 0)
 	    {
 	      if (renameat (chdir_fd, src, chdir_fd, dst) == 0)
 		return true;
-- 
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