Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754161AbZGVKKh (ORCPT ); Wed, 22 Jul 2009 06:10:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754072AbZGVKKe (ORCPT ); Wed, 22 Jul 2009 06:10:34 -0400 Received: from smtp161.dfw.emailsrvr.com ([67.192.241.161]:40236 "EHLO smtp161.dfw.emailsrvr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753992AbZGVKKa (ORCPT ); Wed, 22 Jul 2009 06:10:30 -0400 From: Oren Laadan To: Andrew Morton Cc: Linus Torvalds , containers@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-api@vger.kernel.org, Serge Hallyn , Dave Hansen , Ingo Molnar , "H. Peter Anvin" , Alexander Viro , Pavel Emelyanov , Alexey Dobriyan , Sukadev Bhattiprolu Subject: [RFC v17][PATCH 16/60] pids 6/7: Define do_fork_with_pids() Date: Wed, 22 Jul 2009 05:59:38 -0400 Message-Id: <1248256822-23416-17-git-send-email-orenl@librato.com> X-Mailer: git-send-email 1.6.0.4 In-Reply-To: <1248256822-23416-1-git-send-email-orenl@librato.com> References: <1248256822-23416-1-git-send-email-orenl@librato.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3389 Lines: 101 From: Sukadev Bhattiprolu do_fork_with_pids() is same as do_fork(), except that it takes an additional, 'pid_set', parameter. This parameter, currently unused, specifies the set of target pids of the process in each of its pid namespaces. Changelog[v3]: - Fix "long-line" warning from checkpatch.pl Changelog[v2]: - To facilitate moving architecture-inpdendent code to kernel/fork.c pass in 'struct target_pid_set __user *' to do_fork_with_pids() rather than 'pid_t *' (next patch moves the arch-independent code to kernel/fork.c) Signed-off-by: Sukadev Bhattiprolu Acked-by: Serge Hallyn Reviewed-by: Oren Laadan --- include/linux/sched.h | 3 +++ include/linux/types.h | 5 +++++ kernel/fork.c | 16 ++++++++++++++-- 3 files changed, 22 insertions(+), 2 deletions(-) diff --git a/include/linux/sched.h b/include/linux/sched.h index 16a982e..e2ebb41 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -2052,6 +2052,9 @@ extern int disallow_signal(int); extern int do_execve(char *, char __user * __user *, char __user * __user *, struct pt_regs *); extern long do_fork(unsigned long, unsigned long, struct pt_regs *, unsigned long, int __user *, int __user *); +extern long do_fork_with_pids(unsigned long, unsigned long, struct pt_regs *, + unsigned long, int __user *, int __user *, + struct target_pid_set __user *pid_set); struct task_struct *fork_idle(int); extern void set_task_comm(struct task_struct *tsk, char *from); diff --git a/include/linux/types.h b/include/linux/types.h index c42724f..d9efefe 100644 --- a/include/linux/types.h +++ b/include/linux/types.h @@ -204,6 +204,11 @@ struct ustat { char f_fpack[6]; }; +struct target_pid_set { + int num_pids; + pid_t *target_pids; +}; + #endif /* __KERNEL__ */ #endif /* __ASSEMBLY__ */ #endif /* _LINUX_TYPES_H */ diff --git a/kernel/fork.c b/kernel/fork.c index 6f90cf4..64d53d9 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1341,12 +1341,13 @@ struct task_struct * __cpuinit fork_idle(int cpu) * It copies the process, and if successful kick-starts * it and waits for it to finish using the VM if required. */ -long do_fork(unsigned long clone_flags, +long do_fork_with_pids(unsigned long clone_flags, unsigned long stack_start, struct pt_regs *regs, unsigned long stack_size, int __user *parent_tidptr, - int __user *child_tidptr) + int __user *child_tidptr, + struct target_pid_set __user *pid_setp) { struct task_struct *p; int trace = 0; @@ -1455,6 +1456,17 @@ long do_fork(unsigned long clone_flags, return nr; } +long do_fork(unsigned long clone_flags, + unsigned long stack_start, + struct pt_regs *regs, + unsigned long stack_size, + int __user *parent_tidptr, + int __user *child_tidptr) +{ + return do_fork_with_pids(clone_flags, stack_start, regs, stack_size, + parent_tidptr, child_tidptr, NULL); +} + #ifndef ARCH_MIN_MMSTRUCT_ALIGN #define ARCH_MIN_MMSTRUCT_ALIGN 0 #endif -- 1.6.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/