linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Arnd Bergmann <arnd@arndb.de>
To: y2038@lists.linaro.org, linux-kernel@vger.kernel.org
Cc: Arnd Bergmann <arnd@arndb.de>,
	linux-api@vger.kernel.org, linux-arch@vger.kernel.org,
	libc-alpha@sourceware.org, tglx@linutronix.de,
	netdev@vger.kernel.org, deepa.kernel@gmail.com,
	viro@zeniv.linux.org.uk, albert.aribaud@3adev.fr,
	Peter Zijlstra <peterz@infradead.org>,
	Darren Hart <dvhart@infradead.org>,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Dominik Brodowski <linux@dominikbrodowski.net>
Subject: [PATCH 01/17] y2038: compat: Move common compat types to asm-generic/compat.h
Date: Wed, 25 Apr 2018 18:02:55 +0200	[thread overview]
Message-ID: <20180425160311.2718314-2-arnd@arndb.de> (raw)
In-Reply-To: <20180425160311.2718314-1-arnd@arndb.de>

The architectures that support 32-bit compat mode define a number
of simple types for use in compat handlers. About half of those
are identical between architectures, and some of those are also
required now by handlers shared with CONFIG_COMPAT_32BIT_TIME
functions on 32-bit architectures.

Let's move all the identical ones into asm-generic/compat.h to avoid
having to add even more identical definitions of those types.

For unknown reasons, mips defines __compat_gid32_t, __compat_uid32_t
and compat_caddr_t as signed, while all others have them unsigned.
This seems to be a mistake, but I'm leaving it alone here. The other
types all differ by size or alignment on at least on architecture.

compat_aio_context_t is currently defined in linux/compat.h but
also needed for compat_sys_io_getevents(), so let's move it into
the same place.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm64/include/asm/compat.h   | 20 ++------------------
 arch/mips/include/asm/compat.h    | 22 ++--------------------
 arch/parisc/include/asm/compat.h  | 18 ++----------------
 arch/powerpc/include/asm/compat.h | 18 ++----------------
 arch/s390/include/asm/compat.h    | 18 ++----------------
 arch/sparc/include/asm/compat.h   | 19 ++-----------------
 arch/x86/include/asm/compat.h     | 19 ++-----------------
 include/asm-generic/compat.h      | 24 +++++++++++++++++++++++-
 include/linux/compat.h            |  2 --
 9 files changed, 37 insertions(+), 123 deletions(-)

diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h
index 1a037b94eba1..a4c79f9e856d 100644
--- a/arch/arm64/include/asm/compat.h
+++ b/arch/arm64/include/asm/compat.h
@@ -25,6 +25,8 @@
 #include <linux/sched.h>
 #include <linux/sched/task_stack.h>
 
+#include <asm-generic/compat.h>
+
 #define COMPAT_USER_HZ		100
 #ifdef __AARCH64EB__
 #define COMPAT_UTS_MACHINE	"armv8b\0\0"
@@ -32,10 +34,6 @@
 #define COMPAT_UTS_MACHINE	"armv8l\0\0"
 #endif
 
-typedef u32		compat_size_t;
-typedef s32		compat_ssize_t;
-typedef s32		compat_clock_t;
-typedef s32		compat_pid_t;
 typedef u16		__compat_uid_t;
 typedef u16		__compat_gid_t;
 typedef u16		__compat_uid16_t;
@@ -43,27 +41,13 @@ typedef u16		__compat_gid16_t;
 typedef u32		__compat_uid32_t;
 typedef u32		__compat_gid32_t;
 typedef u16		compat_mode_t;
-typedef u32		compat_ino_t;
 typedef u32		compat_dev_t;
-typedef s32		compat_off_t;
-typedef s64		compat_loff_t;
 typedef s32		compat_nlink_t;
 typedef u16		compat_ipc_pid_t;
-typedef s32		compat_daddr_t;
 typedef u32		compat_caddr_t;
 typedef __kernel_fsid_t	compat_fsid_t;
-typedef s32		compat_key_t;
-typedef s32		compat_timer_t;
-
-typedef s16		compat_short_t;
-typedef s32		compat_int_t;
-typedef s32		compat_long_t;
 typedef s64		compat_s64;
-typedef u16		compat_ushort_t;
-typedef u32		compat_uint_t;
-typedef u32		compat_ulong_t;
 typedef u64		compat_u64;
-typedef u32		compat_uptr_t;
 
 struct compat_stat {
 #ifdef __AARCH64EB__
diff --git a/arch/mips/include/asm/compat.h b/arch/mips/include/asm/compat.h
index 78675f19440f..7033a7c93b48 100644
--- a/arch/mips/include/asm/compat.h
+++ b/arch/mips/include/asm/compat.h
@@ -9,43 +9,25 @@
 #include <asm/page.h>
 #include <asm/ptrace.h>
 
+#include <asm-generic/compat.h>
+
 #define COMPAT_USER_HZ		100
 #define COMPAT_UTS_MACHINE	"mips\0\0\0"
 
-typedef u32		compat_size_t;
-typedef s32		compat_ssize_t;
-typedef s32		compat_clock_t;
-typedef s32		compat_suseconds_t;
-
-typedef s32		compat_pid_t;
 typedef s32		__compat_uid_t;
 typedef s32		__compat_gid_t;
 typedef __compat_uid_t	__compat_uid32_t;
 typedef __compat_gid_t	__compat_gid32_t;
 typedef u32		compat_mode_t;
-typedef u32		compat_ino_t;
 typedef u32		compat_dev_t;
-typedef s32		compat_off_t;
-typedef s64		compat_loff_t;
 typedef u32		compat_nlink_t;
 typedef s32		compat_ipc_pid_t;
-typedef s32		compat_daddr_t;
 typedef s32		compat_caddr_t;
 typedef struct {
 	s32	val[2];
 } compat_fsid_t;
-typedef s32		compat_timer_t;
-typedef s32		compat_key_t;
-
-typedef s16		compat_short_t;
-typedef s32		compat_int_t;
-typedef s32		compat_long_t;
 typedef s64		compat_s64;
-typedef u16		compat_ushort_t;
-typedef u32		compat_uint_t;
-typedef u32		compat_ulong_t;
 typedef u64		compat_u64;
-typedef u32		compat_uptr_t;
 
 struct compat_stat {
 	compat_dev_t	st_dev;
diff --git a/arch/parisc/include/asm/compat.h b/arch/parisc/include/asm/compat.h
index ab8a54771507..f707e025f89b 100644
--- a/arch/parisc/include/asm/compat.h
+++ b/arch/parisc/include/asm/compat.h
@@ -8,36 +8,22 @@
 #include <linux/sched.h>
 #include <linux/thread_info.h>
 
+#include <asm-generic/compat.h>
+
 #define COMPAT_USER_HZ 		100
 #define COMPAT_UTS_MACHINE	"parisc\0\0"
 
-typedef u32	compat_size_t;
-typedef s32	compat_ssize_t;
-typedef s32	compat_clock_t;
-typedef s32	compat_pid_t;
 typedef u32	__compat_uid_t;
 typedef u32	__compat_gid_t;
 typedef u32	__compat_uid32_t;
 typedef u32	__compat_gid32_t;
 typedef u16	compat_mode_t;
-typedef u32	compat_ino_t;
 typedef u32	compat_dev_t;
-typedef s32	compat_off_t;
-typedef s64	compat_loff_t;
 typedef u16	compat_nlink_t;
 typedef u16	compat_ipc_pid_t;
-typedef s32	compat_daddr_t;
 typedef u32	compat_caddr_t;
-typedef s32	compat_key_t;
-typedef s32	compat_timer_t;
-
-typedef s32	compat_int_t;
-typedef s32	compat_long_t;
 typedef s64	compat_s64;
-typedef u32	compat_uint_t;
-typedef u32	compat_ulong_t;
 typedef u64	compat_u64;
-typedef u32	compat_uptr_t;
 
 struct compat_stat {
 	compat_dev_t		st_dev;	/* dev_t is 32 bits on parisc */
diff --git a/arch/powerpc/include/asm/compat.h b/arch/powerpc/include/asm/compat.h
index 85c8af2bb272..036b210b1582 100644
--- a/arch/powerpc/include/asm/compat.h
+++ b/arch/powerpc/include/asm/compat.h
@@ -8,6 +8,8 @@
 #include <linux/types.h>
 #include <linux/sched.h>
 
+#include <asm-generic/compat.h>
+
 #define COMPAT_USER_HZ		100
 #ifdef __BIG_ENDIAN__
 #define COMPAT_UTS_MACHINE	"ppc\0\0"
@@ -15,34 +17,18 @@
 #define COMPAT_UTS_MACHINE	"ppcle\0\0"
 #endif
 
-typedef u32		compat_size_t;
-typedef s32		compat_ssize_t;
-typedef s32		compat_clock_t;
-typedef s32		compat_pid_t;
 typedef u32		__compat_uid_t;
 typedef u32		__compat_gid_t;
 typedef u32		__compat_uid32_t;
 typedef u32		__compat_gid32_t;
 typedef u32		compat_mode_t;
-typedef u32		compat_ino_t;
 typedef u32		compat_dev_t;
-typedef s32		compat_off_t;
-typedef s64		compat_loff_t;
 typedef s16		compat_nlink_t;
 typedef u16		compat_ipc_pid_t;
-typedef s32		compat_daddr_t;
 typedef u32		compat_caddr_t;
 typedef __kernel_fsid_t	compat_fsid_t;
-typedef s32		compat_key_t;
-typedef s32		compat_timer_t;
-
-typedef s32		compat_int_t;
-typedef s32		compat_long_t;
 typedef s64		compat_s64;
-typedef u32		compat_uint_t;
-typedef u32		compat_ulong_t;
 typedef u64		compat_u64;
-typedef u32		compat_uptr_t;
 
 struct compat_stat {
 	compat_dev_t	st_dev;
diff --git a/arch/s390/include/asm/compat.h b/arch/s390/include/asm/compat.h
index 97db2fba546a..63b46e30b2c3 100644
--- a/arch/s390/include/asm/compat.h
+++ b/arch/s390/include/asm/compat.h
@@ -9,6 +9,8 @@
 #include <linux/sched/task_stack.h>
 #include <linux/thread_info.h>
 
+#include <asm-generic/compat.h>
+
 #define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p( \
 				typeof(0?(__force t)0:0ULL), u64))
 
@@ -51,34 +53,18 @@
 #define COMPAT_USER_HZ		100
 #define COMPAT_UTS_MACHINE	"s390\0\0\0\0"
 
-typedef u32		compat_size_t;
-typedef s32		compat_ssize_t;
-typedef s32		compat_clock_t;
-typedef s32		compat_pid_t;
 typedef u16		__compat_uid_t;
 typedef u16		__compat_gid_t;
 typedef u32		__compat_uid32_t;
 typedef u32		__compat_gid32_t;
 typedef u16		compat_mode_t;
-typedef u32		compat_ino_t;
 typedef u16		compat_dev_t;
-typedef s32		compat_off_t;
-typedef s64		compat_loff_t;
 typedef u16		compat_nlink_t;
 typedef u16		compat_ipc_pid_t;
-typedef s32		compat_daddr_t;
 typedef u32		compat_caddr_t;
 typedef __kernel_fsid_t	compat_fsid_t;
-typedef s32		compat_key_t;
-typedef s32		compat_timer_t;
-
-typedef s32		compat_int_t;
-typedef s32		compat_long_t;
 typedef s64		compat_s64;
-typedef u32		compat_uint_t;
-typedef u32		compat_ulong_t;
 typedef u64		compat_u64;
-typedef u32		compat_uptr_t;
 
 typedef struct {
 	u32 mask;
diff --git a/arch/sparc/include/asm/compat.h b/arch/sparc/include/asm/compat.h
index 4eb51d2dae98..985286b79891 100644
--- a/arch/sparc/include/asm/compat.h
+++ b/arch/sparc/include/asm/compat.h
@@ -6,38 +6,23 @@
  */
 #include <linux/types.h>
 
+#include <asm-generic/compat.h>
+
 #define COMPAT_USER_HZ		100
 #define COMPAT_UTS_MACHINE	"sparc\0\0"
 
-typedef u32		compat_size_t;
-typedef s32		compat_ssize_t;
-typedef s32		compat_clock_t;
-typedef s32		compat_pid_t;
 typedef u16		__compat_uid_t;
 typedef u16		__compat_gid_t;
 typedef u32		__compat_uid32_t;
 typedef u32		__compat_gid32_t;
 typedef u16		compat_mode_t;
-typedef u32		compat_ino_t;
 typedef u16		compat_dev_t;
-typedef s32		compat_off_t;
-typedef s64		compat_loff_t;
 typedef s16		compat_nlink_t;
 typedef u16		compat_ipc_pid_t;
-typedef s32		compat_daddr_t;
 typedef u32		compat_caddr_t;
 typedef __kernel_fsid_t	compat_fsid_t;
-typedef s32		compat_key_t;
-typedef s32		compat_timer_t;
-
-typedef s32		compat_int_t;
-typedef s32		compat_long_t;
 typedef s64		compat_s64;
-typedef u32		compat_uint_t;
-typedef u32		compat_ulong_t;
 typedef u64		compat_u64;
-typedef u32		compat_uptr_t;
-
 struct compat_stat {
 	compat_dev_t	st_dev;
 	compat_ino_t	st_ino;
diff --git a/arch/x86/include/asm/compat.h b/arch/x86/include/asm/compat.h
index fb97cf7c4137..0ce6f452d334 100644
--- a/arch/x86/include/asm/compat.h
+++ b/arch/x86/include/asm/compat.h
@@ -12,38 +12,23 @@
 #include <asm/user32.h>
 #include <asm/unistd.h>
 
+#include <asm-generic/compat.h>
+
 #define COMPAT_USER_HZ		100
 #define COMPAT_UTS_MACHINE	"i686\0\0"
 
-typedef u32		compat_size_t;
-typedef s32		compat_ssize_t;
-typedef s32		compat_clock_t;
-typedef s32		compat_pid_t;
 typedef u16		__compat_uid_t;
 typedef u16		__compat_gid_t;
 typedef u32		__compat_uid32_t;
 typedef u32		__compat_gid32_t;
 typedef u16		compat_mode_t;
-typedef u32		compat_ino_t;
 typedef u16		compat_dev_t;
-typedef s32		compat_off_t;
-typedef s64		compat_loff_t;
 typedef u16		compat_nlink_t;
 typedef u16		compat_ipc_pid_t;
-typedef s32		compat_daddr_t;
 typedef u32		compat_caddr_t;
 typedef __kernel_fsid_t	compat_fsid_t;
-typedef s32		compat_timer_t;
-typedef s32		compat_key_t;
-
-typedef s32		compat_int_t;
-typedef s32		compat_long_t;
 typedef s64 __attribute__((aligned(4))) compat_s64;
-typedef u32		compat_uint_t;
-typedef u32		compat_ulong_t;
-typedef u32		compat_u32;
 typedef u64 __attribute__((aligned(4))) compat_u64;
-typedef u32		compat_uptr_t;
 
 struct compat_stat {
 	compat_dev_t	st_dev;
diff --git a/include/asm-generic/compat.h b/include/asm-generic/compat.h
index 28819451b6d1..a86f65bffab8 100644
--- a/include/asm-generic/compat.h
+++ b/include/asm-generic/compat.h
@@ -1,3 +1,25 @@
 /* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __ASM_GENERIC_COMPAT_H
+#define __ASM_GENERIC_COMPAT_H
 
-/* This is an empty stub for 32-bit-only architectures */
+/* These types are common across all compat ABIs */
+typedef u32 compat_size_t;
+typedef s32 compat_ssize_t;
+typedef s32 compat_clock_t;
+typedef s32 compat_pid_t;
+typedef u32 compat_ino_t;
+typedef s32 compat_off_t;
+typedef s64 compat_loff_t;
+typedef s32 compat_daddr_t;
+typedef s32 compat_timer_t;
+typedef s32 compat_key_t;
+typedef s16 compat_short_t;
+typedef s32 compat_int_t;
+typedef s32 compat_long_t;
+typedef u16 compat_ushort_t;
+typedef u32 compat_uint_t;
+typedef u32 compat_ulong_t;
+typedef u32 compat_uptr_t;
+typedef u32 compat_aio_context_t;
+
+#endif
diff --git a/include/linux/compat.h b/include/linux/compat.h
index cfc1b6383ae0..af5ac9de4bdf 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -104,8 +104,6 @@ typedef struct compat_sigaltstack {
 typedef __compat_uid32_t	compat_uid_t;
 typedef __compat_gid32_t	compat_gid_t;
 
-typedef	compat_ulong_t		compat_aio_context_t;
-
 struct compat_sel_arg_struct;
 struct rusage;
 
-- 
2.9.0


  reply	other threads:[~2018-04-25 16:04 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-25 16:02 [PATCH 00/17] y2038: system calls, part 3 Arnd Bergmann
2018-04-25 16:02 ` Arnd Bergmann [this message]
2018-04-25 16:02 ` [PATCH 02/17] y2038: Remove newstat family from default syscall set Arnd Bergmann
2018-04-25 18:36   ` Geert Uytterhoeven
2018-04-25 16:02 ` [PATCH 03/17] y2038: Remove stat64 " Arnd Bergmann
2018-04-25 16:02 ` [PATCH 04/17] asm-generic: Remove unneeded __ARCH_WANT_SYS_LLSEEK macro Arnd Bergmann
2018-04-25 18:36   ` Geert Uytterhoeven
2018-04-25 16:02 ` [PATCH 05/17] asm-generic: Remove empty asm/unistd.h Arnd Bergmann
2018-04-25 16:03 ` [PATCH 06/17] y2038: Change sys_utimensat() to use __kernel_timespec Arnd Bergmann
2018-04-25 16:03 ` [PATCH 07/17] y2038: Compile utimes()/futimesat() conditionally Arnd Bergmann
2018-04-25 16:03 ` [PATCH 08/17] y2038: utimes: Rework #ifdef guards for compat syscalls Arnd Bergmann
2018-04-25 16:03 ` [PATCH 09/17] y2038: futex: Move compat implementation into futex.c Arnd Bergmann
2018-04-25 16:03 ` [PATCH 10/17] y2038: futex: Add support for __kernel_timespec Arnd Bergmann
2018-04-25 16:03 ` [PATCH 11/17] y2038: Prepare sched_rr_get_interval " Arnd Bergmann
2018-04-25 16:03 ` [PATCH 12/17] y2038: aio: Prepare sys_io_getevents " Arnd Bergmann
2018-04-25 16:03 ` [PATCH 13/17] y2038: socket: Convert recvmmsg to __kernel_timespec Arnd Bergmann
2018-04-25 16:03 ` [PATCH 14/17] y2038: socket: Add compat_sys_recvmmsg_time64 Arnd Bergmann
2018-04-25 16:03 ` [PATCH 15/17] y2038: signal: Change rt_sigtimedwait to use __kernel_timespec Arnd Bergmann
2018-04-25 16:03 ` [PATCH 16/17] y2038: Make compat_sys_rt_sigtimedwait usable on 32-bit Arnd Bergmann
2018-04-25 16:03 ` [PATCH 17/17] y2038: signal: Add compat_sys_rt_sigtimedwait_time64 Arnd Bergmann

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20180425160311.2718314-2-arnd@arndb.de \
    --to=arnd@arndb.de \
    --cc=albert.aribaud@3adev.fr \
    --cc=deepa.kernel@gmail.com \
    --cc=dvhart@infradead.org \
    --cc=ebiederm@xmission.com \
    --cc=libc-alpha@sourceware.org \
    --cc=linux-api@vger.kernel.org \
    --cc=linux-arch@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux@dominikbrodowski.net \
    --cc=netdev@vger.kernel.org \
    --cc=peterz@infradead.org \
    --cc=tglx@linutronix.de \
    --cc=viro@zeniv.linux.org.uk \
    --cc=y2038@lists.linaro.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).