[COMMITTED 2.38] io: Fix record locking contants for powerpc64 with __USE_FILE_OFFSET64

[COMMITTED 2.38] io: Fix record locking contants for powerpc64 with __USE_FILE_OFFSET64

[Aurelien Jarno]

Commit 5f828ff824e3b7cd1 ("io: Fix F_GETLK, F_SETLK, and F_SETLKW for
powerpc64") fixed an issue with the value of the lock constants on
powerpc64 when not using __USE_FILE_OFFSET64, but it ended-up also
changing the value when using __USE_FILE_OFFSET64 causing an API change.

Fix that by also checking that define, restoring the pre
4d0fe291aed3a476a commit values:

Default values:
- F_GETLK: 5
- F_SETLK: 6
- F_SETLKW: 7

With -D_FILE_OFFSET_BITS=64:
- F_GETLK: 12
- F_SETLK: 13
- F_SETLKW: 14

At the same time, it has been noticed that there was no test for io lock
with __USE_FILE_OFFSET64, so just add one.

Tested on x86_64-linux-gnu, i686-linux-gnu and
powerpc64le-unknown-linux-gnu.

Resolves: BZ #30804.
Co-authored-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
(cherry picked from commit 434bf72a94de68f0cc7fbf3c44bf38c1911b70cb)
---
 NEWS                                         | 2 ++
 io/Makefile                                  | 1 +
 io/tst-fcntl-lock-lfs.c                      | 2 ++
 sysdeps/unix/sysv/linux/powerpc/bits/fcntl.h | 2 +-
 4 files changed, 6 insertions(+), 1 deletion(-)
 create mode 100644 io/tst-fcntl-lock-lfs.c

diff --git a/NEWS b/NEWS
index c339cb444e..8156572cdf 100644
--- a/NEWS
+++ b/NEWS
@@ -133,6 +133,8 @@ The following bugs are resolved with this release:
   [30579] malloc: trim_threshold in realloc lead to high memory usage
   [30662] nscd: Group and password cache use errno in place of errval
   [30723] posix_memalign repeatedly scans long bin lists
+  [30804] F_GETLK, F_SETLK, and F_SETLKW value change for powerpc64 with
+    -D_FILE_OFFSET_BITS=64
 \f
 Version 2.37
 
diff --git a/io/Makefile b/io/Makefile
index 6ccc0e8691..8a3c83a3bb 100644
--- a/io/Makefile
+++ b/io/Makefile
@@ -192,6 +192,7 @@ tests := \
   tst-fchownat \
   tst-fcntl \
   tst-fcntl-lock \
+  tst-fcntl-lock-lfs \
   tst-fstatat \
   tst-fts \
   tst-fts-lfs \
diff --git a/io/tst-fcntl-lock-lfs.c b/io/tst-fcntl-lock-lfs.c
new file mode 100644
index 0000000000..f2a909fb02
--- /dev/null
+++ b/io/tst-fcntl-lock-lfs.c
@@ -0,0 +1,2 @@
+#define _FILE_OFFSET_BITS 64
+#include <io/tst-fcntl-lock.c>
diff --git a/sysdeps/unix/sysv/linux/powerpc/bits/fcntl.h b/sysdeps/unix/sysv/linux/powerpc/bits/fcntl.h
index f7615a447e..d8a291a331 100644
--- a/sysdeps/unix/sysv/linux/powerpc/bits/fcntl.h
+++ b/sysdeps/unix/sysv/linux/powerpc/bits/fcntl.h
@@ -33,7 +33,7 @@
 # define __O_LARGEFILE	0200000
 #endif
 
-#if __WORDSIZE == 64
+#if __WORDSIZE == 64 && !defined __USE_FILE_OFFSET64
 # define F_GETLK	5
 # define F_SETLK	6
 # define F_SETLKW	7
-- 
2.39.2