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authorChristoph Hellwig <hch@lst.de>2010-03-10 15:21:19 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-12 15:52:32 -0800
commite28cbf22933d0c0ccaf3c4c27a1a263b41f73859 (patch)
treea93ff48cfd97766a23b2c4f3ea86fccfc9c51d3f /arch/mips
parentbaed7fc9b580bd3fb8252ff1d9b36eaf1f86b670 (diff)
improve sys_newuname() for compat architectures
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>
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/include/asm/compat.h3
-rw-r--r--arch/mips/kernel/linux32.c16
-rw-r--r--arch/mips/kernel/scall64-n32.S2
-rw-r--r--arch/mips/kernel/scall64-o32.S2
4 files changed, 4 insertions, 19 deletions
diff --git a/arch/mips/include/asm/compat.h b/arch/mips/include/asm/compat.h
index f58aed354bfd..613f6912dfc1 100644
--- a/arch/mips/include/asm/compat.h
+++ b/arch/mips/include/asm/compat.h
@@ -8,7 +8,8 @@
#include <asm/page.h>
#include <asm/ptrace.h>
-#define COMPAT_USER_HZ 100
+#define COMPAT_USER_HZ 100
+#define COMPAT_UTS_MACHINE "mips\0\0\0"
typedef u32 compat_size_t;
typedef s32 compat_ssize_t;
diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index bde79ef602e6..a39d0597a375 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -249,22 +249,6 @@ SYSCALL_DEFINE5(n32_msgrcv, int, msqid, u32, msgp, size_t, msgsz,
}
#endif
-SYSCALL_DEFINE1(32_newuname, struct new_utsname __user *, name)
-{
- int ret = 0;
-
- down_read(&uts_sem);
- if (copy_to_user(name, utsname(), sizeof *name))
- ret = -EFAULT;
- up_read(&uts_sem);
-
- if (current->personality == PER_LINUX32 && !ret)
- if (copy_to_user(name->machine, "mips\0\0\0", 8))
- ret = -EFAULT;
-
- return ret;
-}
-
SYSCALL_DEFINE1(32_personality, unsigned long, personality)
{
int ret;
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index 66b5a48676dd..44337ba03717 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -181,7 +181,7 @@ EXPORT(sysn32_call_table)
PTR sys_exit
PTR compat_sys_wait4
PTR sys_kill /* 6060 */
- PTR sys_32_newuname
+ PTR sys_newuname
PTR sys_semget
PTR sys_semop
PTR sys_n32_semctl
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 515f9eab2b28..813689ef2384 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -325,7 +325,7 @@ sys_call_table:
PTR sys32_sigreturn
PTR sys32_clone /* 4120 */
PTR sys_setdomainname
- PTR sys_32_newuname
+ PTR sys_newuname
PTR sys_ni_syscall /* sys_modify_ldt */
PTR compat_sys_adjtimex
PTR sys_mprotect /* 4125 */