On Tue, Feb 1, 2022 at 11:02 AM Guo Ren <guoren@xxxxxxxxxx> wrote:
>
> On Mon, Jan 31, 2022 at 2:49 PM Christoph Hellwig <hch@xxxxxx> wrote:
> >
> > The F_GETLK64/F_SETLK64/F_SETLKW64 fcntl opcodes are only implemented
> > for the 32-bit syscall APIs, but are also needed for compat handling
> > on 64-bit kernels.
> >
> > Consolidate them in unistd.h instead of definining the internal compat
> > definitions in compat.h, which is rather errror prone (e.g. parisc
> > gets the values wrong currently).
> >
> > Note that before this change they were never visible to userspace due
> > to the fact that CONFIG_64BIT is only set for kernel builds.
> >
> > Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> > ---
> > arch/arm64/include/asm/compat.h | 4 ----
> > arch/mips/include/asm/compat.h | 4 ----
> > arch/mips/include/uapi/asm/fcntl.h | 4 ++--
> > arch/powerpc/include/asm/compat.h | 4 ----
> > arch/s390/include/asm/compat.h | 4 ----
> > arch/sparc/include/asm/compat.h | 4 ----
> > arch/x86/include/asm/compat.h | 4 ----
> > include/uapi/asm-generic/fcntl.h | 4 ++--
> > tools/include/uapi/asm-generic/fcntl.h | 2 --
> > 9 files changed, 4 insertions(+), 30 deletions(-)
> >
> > diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h
> > index eaa6ca062d89b..2763287654081 100644
> > --- a/arch/arm64/include/asm/compat.h
> > +++ b/arch/arm64/include/asm/compat.h
> > @@ -73,10 +73,6 @@ struct compat_flock {
> > compat_pid_t l_pid;
> > };
> >
> > -#define F_GETLK64 12 /* using 'struct flock64' */
> > -#define F_SETLK64 13
> > -#define F_SETLKW64 14
> > -
> > struct compat_flock64 {
> > short l_type;
> > short l_whence;
> > diff --git a/arch/mips/include/asm/compat.h b/arch/mips/include/asm/compat.h
> > index bbb3bc5a42fd8..6a350c1f70d7e 100644
> > --- a/arch/mips/include/asm/compat.h
> > +++ b/arch/mips/include/asm/compat.h
> > @@ -65,10 +65,6 @@ struct compat_flock {
> > s32 pad[4];
> > };
> >
> > -#define F_GETLK64 33
> > -#define F_SETLK64 34
> > -#define F_SETLKW64 35
> Oops we can't remove above, right?
No problem, I missing, it's okay.
All come from arch/mips/include/uapi/asm/fcntl.h
>
> > -
> > struct compat_flock64 {
> > short l_type;
> > short l_whence;
> > diff --git a/arch/mips/include/uapi/asm/fcntl.h b/arch/mips/include/uapi/asm/fcntl.h
> > index 9e44ac810db94..0369a38e3d4f2 100644
> > --- a/arch/mips/include/uapi/asm/fcntl.h
> > +++ b/arch/mips/include/uapi/asm/fcntl.h
> > @@ -44,11 +44,11 @@
> > #define F_SETOWN 24 /* for sockets. */
> > #define F_GETOWN 23 /* for sockets. */
> >
> > -#ifndef __mips64
> > +#if __BITS_PER_LONG == 32 || defined(__KERNEL__)
> > #define F_GETLK64 33 /* using 'struct flock64' */
> > #define F_SETLK64 34
> > #define F_SETLKW64 35
> > -#endif
> > +#endif /* __BITS_PER_LONG == 32 || defined(__KERNEL__) */
> >
> > #if _MIPS_SIM != _MIPS_SIM_ABI64
> > #define __ARCH_FLOCK_EXTRA_SYSID long l_sysid;
> > diff --git a/arch/powerpc/include/asm/compat.h b/arch/powerpc/include/asm/compat.h
> > index 7afc96fb6524b..83d8f70779cbc 100644
> > --- a/arch/powerpc/include/asm/compat.h
> > +++ b/arch/powerpc/include/asm/compat.h
> > @@ -52,10 +52,6 @@ struct compat_flock {
> > compat_pid_t l_pid;
> > };
> >
> > -#define F_GETLK64 12 /* using 'struct flock64' */
> > -#define F_SETLK64 13
> > -#define F_SETLKW64 14
> > -
> > struct compat_flock64 {
> > short l_type;
> > short l_whence;
> > diff --git a/arch/s390/include/asm/compat.h b/arch/s390/include/asm/compat.h
> > index cdc7ae72529d8..0f14b3188b1bb 100644
> > --- a/arch/s390/include/asm/compat.h
> > +++ b/arch/s390/include/asm/compat.h
> > @@ -110,10 +110,6 @@ struct compat_flock {
> > compat_pid_t l_pid;
> > };
> >
> > -#define F_GETLK64 12
> > -#define F_SETLK64 13
> > -#define F_SETLKW64 14
> > -
> > struct compat_flock64 {
> > short l_type;
> > short l_whence;
> > diff --git a/arch/sparc/include/asm/compat.h b/arch/sparc/include/asm/compat.h
> > index bd949fcf9d63b..108078751bb5a 100644
> > --- a/arch/sparc/include/asm/compat.h
> > +++ b/arch/sparc/include/asm/compat.h
> > @@ -84,10 +84,6 @@ struct compat_flock {
> > short __unused;
> > };
> >
> > -#define F_GETLK64 12
> > -#define F_SETLK64 13
> > -#define F_SETLKW64 14
> > -
> > struct compat_flock64 {
> > short l_type;
> > short l_whence;
> > diff --git a/arch/x86/include/asm/compat.h b/arch/x86/include/asm/compat.h
> > index 7516e4199b3c6..8d19a212f4f26 100644
> > --- a/arch/x86/include/asm/compat.h
> > +++ b/arch/x86/include/asm/compat.h
> > @@ -58,10 +58,6 @@ struct compat_flock {
> > compat_pid_t l_pid;
> > };
> >
> > -#define F_GETLK64 12 /* using 'struct flock64' */
> > -#define F_SETLK64 13
> > -#define F_SETLKW64 14
> > -
> > /*
> > * IA32 uses 4 byte alignment for 64 bit quantities,
> > * so we need to pack this structure.
> > diff --git a/include/uapi/asm-generic/fcntl.h b/include/uapi/asm-generic/fcntl.h
> > index 98f4ff165b776..8c05d3d89ff18 100644
> > --- a/include/uapi/asm-generic/fcntl.h
> > +++ b/include/uapi/asm-generic/fcntl.h
> > @@ -116,13 +116,13 @@
> > #define F_GETSIG 11 /* for sockets. */
> > #endif
> >
> > -#ifndef CONFIG_64BIT
> > +#if __BITS_PER_LONG == 32 || defined(__KERNEL__)
> > #ifndef F_GETLK64
> > #define F_GETLK64 12 /* using 'struct flock64' */
> > #define F_SETLK64 13
> > #define F_SETLKW64 14
> > #endif
> > -#endif
> > +#endif /* __BITS_PER_LONG == 32 || defined(__KERNEL__) */
> >
> > #ifndef F_SETOWN_EX
> > #define F_SETOWN_EX 15
> > diff --git a/tools/include/uapi/asm-generic/fcntl.h b/tools/include/uapi/asm-generic/fcntl.h
> > index bf961a71802e0..6e16722026f39 100644
> > --- a/tools/include/uapi/asm-generic/fcntl.h
> > +++ b/tools/include/uapi/asm-generic/fcntl.h
> > @@ -115,13 +115,11 @@
> > #define F_GETSIG 11 /* for sockets. */
> > #endif
> >
> > -#ifndef CONFIG_64BIT
> > #ifndef F_GETLK64
> > #define F_GETLK64 12 /* using 'struct flock64' */
> > #define F_SETLK64 13
> > #define F_SETLKW64 14
> > #endif
> > -#endif
> >
> > #ifndef F_SETOWN_EX
> > #define F_SETOWN_EX 15
> > --
> > 2.30.2
> >
>
>
> --
> Best Regards
> Guo Ren
>
> ML: https://lore.kernel.org/linux-csky/
--
Best Regards
Guo Ren
ML: https://lore.kernel.org/linux-csky/
