From owner-svn-src-head@FreeBSD.ORG Fri Feb 10 00:02:14 2012 Return-Path: Delivered-To: svn-src-head@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0C9011065675; Fri, 10 Feb 2012 00:02:14 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c]) by mx1.freebsd.org (Postfix) with ESMTP id D50248FC08; Fri, 10 Feb 2012 00:02:13 +0000 (UTC) Received: from svn.freebsd.org (localhost [127.0.0.1]) by svn.freebsd.org (8.14.4/8.14.4) with ESMTP id q1A02D5w044149; Fri, 10 Feb 2012 00:02:13 GMT (envelope-from kib@svn.freebsd.org) Received: (from kib@localhost) by svn.freebsd.org (8.14.4/8.14.4/Submit) id q1A02DeH044144; Fri, 10 Feb 2012 00:02:13 GMT (envelope-from kib@svn.freebsd.org) Message-Id: <201202100002.q1A02DeH044144@svn.freebsd.org> From: Konstantin Belousov Date: Fri, 10 Feb 2012 00:02:13 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Subject: svn commit: r231320 - in head/sys: kern sys X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 10 Feb 2012 00:02:14 -0000 Author: kib Date: Fri Feb 10 00:02:13 2012 New Revision: 231320 URL: http://svn.freebsd.org/changeset/base/231320 Log: Mark the automatically attached child with PL_FLAG_CHILD in struct lwpinfo flags, for PT_FOLLOWFORK auto-attachment. In collaboration with: Dmitry Mikulin MFC after: 1 week Modified: head/sys/kern/kern_fork.c head/sys/kern/sys_process.c head/sys/sys/proc.h head/sys/sys/ptrace.h Modified: head/sys/kern/kern_fork.c ============================================================================== --- head/sys/kern/kern_fork.c Fri Feb 10 00:02:03 2012 (r231319) +++ head/sys/kern/kern_fork.c Fri Feb 10 00:02:13 2012 (r231320) @@ -1035,7 +1035,9 @@ fork_return(struct thread *td, struct tr p->p_oppid = p->p_pptr->p_pid; proc_reparent(p, dbg); sx_xunlock(&proctree_lock); + td->td_dbgflags |= TDB_CHILD; ptracestop(td, SIGSTOP); + td->td_dbgflags &= ~TDB_CHILD; } else { /* * ... otherwise clear the request. Modified: head/sys/kern/sys_process.c ============================================================================== --- head/sys/kern/sys_process.c Fri Feb 10 00:02:03 2012 (r231319) +++ head/sys/kern/sys_process.c Fri Feb 10 00:02:13 2012 (r231320) @@ -1145,6 +1145,8 @@ kern_ptrace(struct thread *td, int req, pl->pl_flags |= PL_FLAG_FORKED; pl->pl_child_pid = td2->td_dbg_forked; } + if (td2->td_dbgflags & TDB_CHILD) + pl->pl_flags |= PL_FLAG_CHILD; pl->pl_sigmask = td2->td_sigmask; pl->pl_siglist = td2->td_siglist; strcpy(pl->pl_tdname, td2->td_name); Modified: head/sys/sys/proc.h ============================================================================== --- head/sys/sys/proc.h Fri Feb 10 00:02:03 2012 (r231319) +++ head/sys/sys/proc.h Fri Feb 10 00:02:13 2012 (r231320) @@ -384,6 +384,7 @@ do { \ process */ #define TDB_STOPATFORK 0x00000080 /* Stop at the return from fork (child only) */ +#define TDB_CHILD 0x00000100 /* New child indicator for ptrace() */ /* * "Private" flags kept in td_pflags: Modified: head/sys/sys/ptrace.h ============================================================================== --- head/sys/sys/ptrace.h Fri Feb 10 00:02:03 2012 (r231319) +++ head/sys/sys/ptrace.h Fri Feb 10 00:02:13 2012 (r231320) @@ -107,6 +107,7 @@ struct ptrace_lwpinfo { #define PL_FLAG_EXEC 0x10 /* exec(2) succeeded */ #define PL_FLAG_SI 0x20 /* siginfo is valid */ #define PL_FLAG_FORKED 0x40 /* new child */ +#define PL_FLAG_CHILD 0x80 /* I am from child */ sigset_t pl_sigmask; /* LWP signal mask */ sigset_t pl_siglist; /* LWP pending signal */ struct __siginfo pl_siginfo; /* siginfo for signal */