From 6b9c7ed84837753a436415097063232422e29a35 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sun, 8 Jan 2006 01:02:33 -0800 Subject: [PATCH] use ptrace_get_task_struct in various places The ptrace_get_task_struct() helper that I added as part of the ptrace consolidation is useful in variety of places that currently opencode it. Switch them to the common helpers. Add a ptrace_traceme() helper that needs to be explicitly called, and simplify the ptrace_get_task_struct() interface. We don't need the request argument now, and we return the task_struct directly, using ERR_PTR() for error returns. It's a bit more code in the callers, but we have two sane routines that do one thing well now. Signed-off-by: Christoph Hellwig Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/ia64/ia32/sys_ia32.c | 16 +++++----------- 1 file changed, 5 insertions(+), 11 deletions(-) (limited to 'arch/ia64/ia32') diff --git a/arch/ia64/ia32/sys_ia32.c b/arch/ia64/ia32/sys_ia32.c index dc282710421..9f8e8d55887 100644 --- a/arch/ia64/ia32/sys_ia32.c +++ b/arch/ia64/ia32/sys_ia32.c @@ -1761,21 +1761,15 @@ sys32_ptrace (int request, pid_t pid, unsigned int addr, unsigned int data) lock_kernel(); if (request == PTRACE_TRACEME) { - ret = sys_ptrace(request, pid, addr, data); + ret = ptrace_traceme(); goto out; } - ret = -ESRCH; - read_lock(&tasklist_lock); - child = find_task_by_pid(pid); - if (child) - get_task_struct(child); - read_unlock(&tasklist_lock); - if (!child) + child = ptrace_get_task_struct(pid); + if (IS_ERR(child)) { + ret = PTR_ERR(child); goto out; - ret = -EPERM; - if (pid == 1) /* no messing around with init! */ - goto out_tsk; + } if (request == PTRACE_ATTACH) { ret = sys_ptrace(request, pid, addr, data); -- cgit v1.2.3