[PATCH v3] io: Fix record locking contants for powerpc64 with __USE_FILE_OFFSET64

[PATCH v3] 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>
---
 io/Makefile                                  | 1 +
 io/tst-fcntl-lock-lfs.c                      | 2 ++
 sysdeps/unix/sysv/linux/powerpc/bits/fcntl.h | 2 +-
 3 files changed, 4 insertions(+), 1 deletion(-)
 create mode 100644 io/tst-fcntl-lock-lfs.c


Changelog:
v1 -> v2: Add a test for io lock with __USE_FILE_OFFSET64
v2 -> v3: Improve the commit message to note it's an API change, not an
          ABI breakage

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

Re: [PATCH v3] io: Fix record locking contants for powerpc64 with __USE_FILE_OFFSET64

[Aurelien Jarno]

Is this version fine to commit, or is there more things to fix?

Thanks
Aurelien

On 2023-08-31 21:15, Aurelien Jarno wrote:
> 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>
> ---
>  io/Makefile                                  | 1 +
>  io/tst-fcntl-lock-lfs.c                      | 2 ++
>  sysdeps/unix/sysv/linux/powerpc/bits/fcntl.h | 2 +-
>  3 files changed, 4 insertions(+), 1 deletion(-)
>  create mode 100644 io/tst-fcntl-lock-lfs.c
> 
> 
> Changelog:
> v1 -> v2: Add a test for io lock with __USE_FILE_OFFSET64
> v2 -> v3: Improve the commit message to note it's an API change, not an
>           ABI breakage
> 
> 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
> 
> 

-- 
Aurelien Jarno                          GPG: 4096R/1DDD8C9B
aurelien@aurel32.net                     http://aurel32.net

Re: [PATCH v3] io: Fix record locking contants for powerpc64 with __USE_FILE_OFFSET64

[Andreas Schwab]

On Aug 31 2023, Aurelien Jarno wrote:

> 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.

Ok.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."