Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4b7775870b69129e640ed583c9b362d5cd66159d
Commit: 4b7775870b69129e640ed583c9b362d5cd66159d
Parent: 6d9525b52aecd11b14c4ec982add01c11157172f
Author: Arnd Bergmann <[EMAIL PROTECTED]>
AuthorDate: Sun Jul 15 23:41:11 2007 -0700
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Mon Jul 16 09:05:48 2007 -0700
Introduce compat_u64 and compat_s64 types
One common problem with 32 bit system call and ioctl emulation is the
different alignment rules between i386 and 64 bit machines. A number of
drivers work around this by marking the compat structures as
'attribute((packed))', which is not the right solution because it breaks
all the non-x86 architectures that want to use the same compat code.
Hopefully, this patch improves the situation, it introduces two new types,
compat_u64 and compat_s64. These are defined on all architectures to have
the same size and alignment as the 32 bit version of u64 and s64.
Signed-off-by: Arnd Bergmann <[EMAIL PROTECTED]>
Acked-by: David S. Miller <[EMAIL PROTECTED]>
Cc: David Woodhouse <[EMAIL PROTECTED]>
Cc: Andi Kleen <[EMAIL PROTECTED]>
Cc: Benjamin Herrenschmidt <[EMAIL PROTECTED]>
Cc: Vasily Tarasov <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
include/asm-ia64/compat.h | 2 ++
include/asm-mips/compat.h | 2 ++
include/asm-parisc/compat.h | 2 ++
include/asm-powerpc/compat.h | 2 ++
include/asm-s390/compat.h | 2 ++
include/asm-sparc64/compat.h | 2 ++
include/asm-x86_64/compat.h | 2 ++
7 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/include/asm-ia64/compat.h b/include/asm-ia64/compat.h
index 40d01d8..0f6e526 100644
--- a/include/asm-ia64/compat.h
+++ b/include/asm-ia64/compat.h
@@ -31,8 +31,10 @@ typedef s32 compat_timer_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 u64 __attribute__((aligned(4))) compat_u64;
struct compat_timespec {
compat_time_t tv_sec;
diff --git a/include/asm-mips/compat.h b/include/asm-mips/compat.h
index 67c3f8e..568c76c 100644
--- a/include/asm-mips/compat.h
+++ b/include/asm-mips/compat.h
@@ -37,8 +37,10 @@ typedef s32 compat_key_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;
struct compat_timespec {
compat_time_t tv_sec;
diff --git a/include/asm-parisc/compat.h b/include/asm-parisc/compat.h
index 11f4222..5a85d1b 100644
--- a/include/asm-parisc/compat.h
+++ b/include/asm-parisc/compat.h
@@ -31,8 +31,10 @@ 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;
struct compat_timespec {
compat_time_t tv_sec;
diff --git a/include/asm-powerpc/compat.h b/include/asm-powerpc/compat.h
index aacaabd..64ab1dd 100644
--- a/include/asm-powerpc/compat.h
+++ b/include/asm-powerpc/compat.h
@@ -33,8 +33,10 @@ 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;
struct compat_timespec {
compat_time_t tv_sec;
diff --git a/include/asm-s390/compat.h b/include/asm-s390/compat.h
index 296f4f1..7f4ad62 100644
--- a/include/asm-s390/compat.h
+++ b/include/asm-s390/compat.h
@@ -60,8 +60,10 @@ 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;
struct compat_timespec {
compat_time_t tv_sec;
diff --git a/include/asm-sparc64/compat.h b/include/asm-sparc64/compat.h
index 36511ca..01fe668 100644
--- a/include/asm-sparc64/compat.h
+++ b/include/asm-sparc64/compat.h
@@ -31,8 +31,10 @@ 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;
struct compat_timespec {
compat_time_t tv_sec;
diff --git a/include/asm-x86_64/compat.h b/include/asm-x86_64/compat.h
index b37ab82..53cb96b 100644
--- a/include/asm-x86_64/compat.h
+++ b/include/asm-x86_64/compat.h
@@ -33,8 +33,10 @@ 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 u64 __attribute__((aligned(4))) compat_u64;
struct compat_timespec {
compat_time_t tv_sec;
-
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