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improve sys_newuname() for compat architectures

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On an architecture that supports 32-bit compat we need to override the
reported machine in uname with the 32-bit value.  Instead of doing this
separately in every architecture introduce a COMPAT_UTS_MACHINE define in
<asm/compat.h> and apply it directly in sys_newuname().

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: James Morris <jmorris@namei.org>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig
2010-03-10 15:21:19 -08:00
committed by Linus Torvalds
parent baed7fc9b5
commit e28cbf2293
28 changed files with 36 additions and 123 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
arch/powerpc/include/asm/compat.h
View File

@@ -7,7 +7,8 @@
#include <linux/types.h>
#include <linux/sched.h>
#define COMPAT_USER_HZ 100
#define COMPAT_USER_HZ 100
#define COMPAT_UTS_MACHINE "ppc\0\0"
typedef u32 compat_size_t;
typedef s32 compat_ssize_t;

2
arch/powerpc/include/asm/syscalls.h
View File

@@ -7,7 +7,6 @@
#include <linux/types.h>
#include <asm/signal.h>
struct new_utsname;
struct pt_regs;
struct rtas_args;
struct sigaction;
@@ -38,7 +37,6 @@ asmlinkage long sys_rt_sigaction(int sig,
asmlinkage long ppc64_personality(unsigned long personality);
asmlinkage int ppc_rtas(struct rtas_args __user *uargs);
asmlinkage time_t sys64_time(time_t __user * tloc);
asmlinkage long ppc_newuname(struct new_utsname __user * name);
asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset,
size_t sigsetsize);

2
arch/powerpc/include/asm/systbl.h
View File

@@ -125,7 +125,7 @@ SYSCALL_SPU(fsync)
SYS32ONLY(sigreturn)
PPC_SYS(clone)
COMPAT_SYS_SPU(setdomainname)
PPC_SYS_SPU(newuname)
SYSCALL_SPU(newuname)
SYSCALL(ni_syscall)
COMPAT_SYS_SPU(adjtimex)
SYSCALL_SPU(mprotect)