File bsc1200657.patch of Package tar.31900

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File bsc1200657.patch of Package tar.31900

From 79d1ac38c19faad64f0e993180bf1ad27f217072 Mon Sep 17 00:00:00 2001
From: James Abbatiello <abbeyj@gmail.com>
Date: Fri, 10 Jun 2022 18:25:13 -0700
Subject: tar: fix race condition

Problem reported in:
https://lists.gnu.org/r/bug-tar/2022-03/msg00000.html
* src/extract.c (make_directories): Retry the file creation as
long as the directory exists, regardless of whether tar itself
created the directory.
Copyright-paperwork-exempt: Yes
---
 src/extract.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

Index: tar-1.27.1/src/extract.c
===================================================================
--- tar-1.27.1.orig/src/extract.c
+++ tar-1.27.1/src/extract.c
@@ -539,10 +539,9 @@ repair_delayed_set_stat (char const *dir
 
 /* After a file/link/directory creation has failed due to ENOENT,
    create all required directories.  Return zero if all the required
-   directories were created, nonzero (issuing a diagnostic) otherwise.
-   Set *INTERDIR_MADE if at least one directory was created.  */
+   directories were created, nonzero (issuing a diagnostic) otherwise.  */
 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 */
@@ -586,7 +585,6 @@ make_directories (char *file_name, bool
 			  desired_mode, AT_SYMLINK_NOFOLLOW);
 
 	  print_for_mkdir (file_name, cursor - file_name, desired_mode);
-	  *interdir_made = true;
 	  parent_end = NULL;
 	}
       else
@@ -743,8 +741,11 @@ maybe_recoverable (char *file_name, bool
 
     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:
@@ -1765,12 +1766,11 @@ rename_directory (char *src, char *dst)
   if (renameat (chdir_fd, src, chdir_fd, dst) != 0)
     {
       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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File bsc1200657.patch of Package tar.31900

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