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| author | Christoph Hellwig <hch@lst.de> | 2010-03-10 15:21:19 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-12 15:52:32 -0800 |
| commit | e28cbf22933d0c0ccaf3c4c27a1a263b41f73859 (patch) | |
| tree | a93ff48cfd97766a23b2c4f3ea86fccfc9c51d3f /arch/um | |
| parent | baed7fc9b580bd3fb8252ff1d9b36eaf1f86b670 (diff) | |
| download | lwn-e28cbf22933d0c0ccaf3c4c27a1a263b41f73859.tar.gz lwn-e28cbf22933d0c0ccaf3c4c27a1a263b41f73859.zip | |
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/um')
| -rw-r--r-- | arch/um/sys-x86_64/syscall_table.c | 5 | ||||
| -rw-r--r-- | arch/um/sys-x86_64/syscalls.c | 14 |
2 files changed, 0 insertions, 19 deletions
diff --git a/arch/um/sys-x86_64/syscall_table.c b/arch/um/sys-x86_64/syscall_table.c index dd21d69715e6..47d469e7e7ce 100644 --- a/arch/um/sys-x86_64/syscall_table.c +++ b/arch/um/sys-x86_64/syscall_table.c @@ -26,11 +26,6 @@ /* On UML we call it this way ("old" means it's not mmap2) */ #define sys_mmap old_mmap -/* - * On x86-64 sys_uname is actually sys_newuname plus a compatibility trick. - * See arch/x86_64/kernel/sys_x86_64.c - */ -#define sys_uname sys_uname64 #define stub_clone sys_clone #define stub_fork sys_fork diff --git a/arch/um/sys-x86_64/syscalls.c b/arch/um/sys-x86_64/syscalls.c index f1199fd34d38..f3d82bb6e15a 100644 --- a/arch/um/sys-x86_64/syscalls.c +++ b/arch/um/sys-x86_64/syscalls.c @@ -12,20 +12,6 @@ #include "asm/uaccess.h" #include "os.h" -asmlinkage long sys_uname64(struct new_utsname __user * name) -{ - int err; - - down_read(&uts_sem); - err = copy_to_user(name, utsname(), sizeof (*name)); - up_read(&uts_sem); - - if (personality(current->personality) == PER_LINUX32) - err |= copy_to_user(&name->machine, "i686", 5); - - return err ? -EFAULT : 0; -} - long arch_prctl(struct task_struct *task, int code, unsigned long __user *addr) { unsigned long *ptr = addr, tmp; |