make simple backups in correct dir; broken in 9.1

From https://bugs.gnu.org/55029

coreutils.spec

@@ -1,7 +1,7 @@
 Summary: A set of basic GNU tools commonly used in shell scripts
 Name:    coreutils
 Version: 9.1
-Release: 1%{?dist}
+Release: 2%{?dist}
 License: GPLv3+
 Url:     https://www.gnu.org/software/coreutils/
 Source0: https://ftp.gnu.org/gnu/%{name}/%{name}-%{version}.tar.xz
@@ -17,6 +17,9 @@ Source106:  coreutils-colorls.csh
 # do not make coreutils-single depend on /usr/bin/coreutils
 %global __requires_exclude ^%{_bindir}/coreutils$
 
+# Make simple backups in correct dir; broken in 9.1
+Patch1: gnulib-simple-backup-fix.patch
+
 # disable the test-lock gnulib test prone to deadlock
 Patch100: coreutils-8.26-test-lock.patch
 
@@ -262,6 +265,9 @@ rm -f $RPM_BUILD_ROOT%{_infodir}/dir
 %license COPYING
 
 %changelog
+* Sat Apr 23 2022 Pádraig Brady <P@draigBrady.com> - 9.1-2
+- make simple backups in correct dir; broken in 9.1
+
 * Tue Apr 19 2022 Kamil Dudka <kdudka@redhat.com> - 9.1-1
 - new upstream release 9.1
 

gnulib-simple-backup-fix.patch

@@ -0,0 +1,36 @@
+commit 7347caeb9d902d3fca2c11f69a55a3e578d93bfe
+Author: Paul Eggert <eggert@cs.ucla.edu>
+Date:   Wed Apr 20 19:34:57 2022 -0700
+
+    backupfile: fix bug when renaming simple backups
+    
+    * lib/backupfile.c (backupfile_internal): Fix bug when RENAME
+    and when doing simple backups.  Problem reported by Steve Ward in:
+    https://bugs.gnu.org/55029
+
+diff --git a/lib/backupfile.c b/lib/backupfile.c
+index 1e9290a187..d9f465a3e0 100644
+--- a/lib/backupfile.c
++++ b/lib/backupfile.c
+@@ -332,7 +332,7 @@ backupfile_internal (int dir_fd, char const *file,
+     return s;
+ 
+   DIR *dirp = NULL;
+-  int sdir = AT_FDCWD;
++  int sdir = dir_fd;
+   idx_t base_max = 0;
+   while (true)
+     {
+@@ -371,10 +371,9 @@ backupfile_internal (int dir_fd, char const *file,
+       if (! rename)
+         break;
+ 
+-      int olddirfd = sdir < 0 ? dir_fd : sdir;
+-      idx_t offset = sdir < 0 ? 0 : base_offset;
++      idx_t offset = backup_type == simple_backups ? 0 : base_offset;
+       unsigned flags = backup_type == simple_backups ? 0 : RENAME_NOREPLACE;
+-      if (renameatu (olddirfd, file + offset, sdir, s + offset, flags) == 0)
++      if (renameatu (sdir, file + offset, sdir, s + offset, flags) == 0)
+         break;
+       int e = errno;
+       if (! (e == EEXIST && extended))