From: Alexey Dobriyan <adobriyan@gmail.com>
To: Roland McGrath <roland@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
"H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [PATCH x86/mm 09/11] x86 ia32 ptrace arch merge
Date: Thu, 29 Nov 2007 23:58:52 +0300 [thread overview]
Message-ID: <20071129205852.GA1726@martell.zuzino.mipt.ru> (raw)
In-Reply-To: <20071129120041.8621A26F989@magilla.localdomain>
On Thu, Nov 29, 2007 at 04:00:41AM -0800, Roland McGrath wrote:
> This moves the sys32_ptrace code into arch/x86/kernel/ptrace.c,
> verbatim except for a few hard-coded sizes replaced with sizeof.
> Here this code can use the shared local functions in this file.
> --- a/arch/x86/kernel/ptrace.c
> +++ b/arch/x86/kernel/ptrace.c
> +asmlinkage long sys32_ptrace(long request, u32 pid, u32 addr, u32 data)
> +{
> + struct task_struct *child;
> + struct pt_regs *childregs;
> + void __user *datap = compat_ptr(data);
> + int ret;
> + __u32 val;
> +
> + switch (request) {
> + case PTRACE_PEEKDATA:
> + case PTRACE_PEEKTEXT:
> + ret = 0;
Dead write.
> + if (access_process_vm(child, addr, &val, sizeof(u32), 0) !=
> + sizeof(u32))
> + ret = -EIO;
> + else
> + ret = put_user(val, (unsigned int __user *)datap);
> + break;
> + case PTRACE_GETFPREGS:
> + ret = -EIO;
> + if (!access_ok(VERIFY_READ, compat_ptr(data),
> + sizeof(struct user_i387_struct)))
> + break;
> + save_i387_ia32(child, datap, childregs, 1);
> + ret = 0;
> + break;
More indentation than needed.
> + case PTRACE_GETFPXREGS: {
> + struct user32_fxsr_struct __user *u = datap;
> +
> + init_fpu(child);
> + ret = -EIO;
> + if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
> + break;
> + ret = -EFAULT;
Absent { }. :^)
> + if (__copy_to_user(u, &child->thread.i387.fxsave, sizeof(*u)))
> + break;
> + ret = __put_user(childregs->cs, &u->fcs);
> + ret |= __put_user(child->thread.ds, &u->fos);
> + break;
> + }
next prev parent reply other threads:[~2007-11-29 20:59 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-29 11:57 [PATCH x86/mm 01/11] x86-32 thread_struct.debugreg Roland McGrath
2007-11-29 11:59 ` [PATCH x86/mm 02/11] x86: ptrace_32 renamed Roland McGrath
2007-11-29 11:59 ` [PATCH x86/mm 03/11] x86: ptrace FLAG_MASK cleanup Roland McGrath
2007-11-29 11:59 ` [PATCH x86/mm 04/11] x86 ptrace getreg/putreg cleanup Roland McGrath
2007-11-29 11:59 ` [PATCH x86/mm 05/11] x86 ptrace getreg/putreg merge Roland McGrath
2007-11-29 17:27 ` Andrew Morton
2007-11-29 22:28 ` Roland McGrath
2007-11-30 11:40 ` Ingo Molnar
2007-11-29 12:00 ` [PATCH x86/mm 06/11] x86 ptrace arch merge Roland McGrath
2007-11-29 17:28 ` Andrew Morton
2007-11-29 21:33 ` Roland McGrath
2007-11-29 12:00 ` [PATCH x86/mm 07/11] x86 ptrace merge syscall trace Roland McGrath
2007-11-29 12:00 ` [PATCH x86/mm 08/11] x86 ia32 ptrace getreg/putreg merge Roland McGrath
2007-11-29 17:37 ` Christoph Hellwig
2007-11-29 17:59 ` H. Peter Anvin
2007-11-29 19:50 ` Ingo Molnar
2007-11-29 12:00 ` [PATCH x86/mm 09/11] x86 ia32 ptrace arch merge Roland McGrath
2007-11-29 20:58 ` Alexey Dobriyan [this message]
2007-11-29 21:37 ` Roland McGrath
2007-11-30 11:34 ` Ingo Molnar
2007-11-29 12:00 ` [PATCH x86/mm 10/11] x86 ptrace merge complete Roland McGrath
2007-11-29 12:00 ` [PATCH x86/mm 11/11] x86 ptrace merge removals Roland McGrath
2007-11-29 14:04 ` Jeff Dike
2007-11-29 22:38 ` Roland McGrath
2007-11-30 0:03 ` Jeff Dike
2007-11-29 12:23 ` [PATCH x86/mm 01/11] x86-32 thread_struct.debugreg Ingo Molnar
2007-11-29 21:50 ` Roland McGrath
2007-11-29 23:02 ` Chuck Ebbert
2007-11-30 0:07 ` Jeff Dike
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