From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755902Ab2HZAEY (ORCPT ); Sat, 25 Aug 2012 20:04:24 -0400 Received: from out01.mta.xmission.com ([166.70.13.231]:37856 "EHLO out01.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753510Ab2HZAEV (ORCPT ); Sat, 25 Aug 2012 20:04:21 -0400 From: ebiederm@xmission.com (Eric W. Biederman) To: Cc: , , "Serge E. Hallyn" , David Miller Cc: Steven Rostedt Cc: Frederic Weisbecker Cc: Ingo Molnar References: <87lih2h6i4.fsf@xmission.com> Date: Sat, 25 Aug 2012 17:04:08 -0700 In-Reply-To: <87lih2h6i4.fsf@xmission.com> (Eric W. Biederman's message of "Sat, 25 Aug 2012 16:54:59 -0700") Message-ID: <87wr0mecxz.fsf@xmission.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-XM-SPF: eid=;;;mid=;;;hst=in02.mta.xmission.com;;;ip=98.207.153.68;;;frm=ebiederm@xmission.com;;;spf=neutral X-XM-AID: U2FsdGVkX18tuaaQFj7UUpe4tCNDHlV23T2aQO4eDAY= X-SA-Exim-Connect-IP: 98.207.153.68 X-SA-Exim-Mail-From: ebiederm@xmission.com X-Spam-Report: * -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP * 1.5 XMNoVowels Alpha-numberic number with no vowels * 1.5 TR_Symld_Words too many words that have symbols inside * 0.0 T_TM2_M_HEADER_IN_MSG BODY: T_TM2_M_HEADER_IN_MSG * -0.5 BAYES_05 BODY: Bayes spam probability is 1 to 5% * [score: 0.0210] * -0.0 DCC_CHECK_NEGATIVE Not listed in DCC * [sa03 1397; Body=1 Fuz1=1 Fuz2=1] * 0.0 T_TooManySym_01 4+ unique symbols in subject * 0.0 T_XMDrugObfuBody_14 obfuscated drug references X-Spam-DCC: XMission; sa03 1397; Body=1 Fuz1=1 Fuz2=1 X-Spam-Combo: *; X-Spam-Relay-Country: Subject: [REVIEW][PATCH 11/15] userns: Teach trace to use from_kuid X-Spam-Flag: No X-SA-Exim-Version: 4.2.1 (built Fri, 06 Aug 2010 16:31:04 -0600) X-SA-Exim-Scanned: Yes (on in02.mta.xmission.com) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org - When tracing capture the kuid. - When displaying the data to user space convert the kuid into the user namespace of the process that opened the report file. Cc: Steven Rostedt Cc: Frederic Weisbecker Cc: Ingo Molnar Signed-off-by: Eric W. Biederman --- init/Kconfig | 1 - kernel/trace/trace.c | 3 ++- kernel/trace/trace.h | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/init/Kconfig b/init/Kconfig index af41fa7..d849ba2 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -927,7 +927,6 @@ config UIDGID_CONVERTED # Features depends on IMA = n depends on EVM = n - depends on TRACING = n depends on FS_POSIX_ACL = n depends on QUOTA = n depends on QUOTACTL = n diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 5c38c81..c9ace83 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2060,7 +2060,8 @@ print_trace_header(struct seq_file *m, struct trace_iterator *iter) seq_puts(m, "# -----------------\n"); seq_printf(m, "# | task: %.16s-%d " "(uid:%d nice:%ld policy:%ld rt_prio:%ld)\n", - data->comm, data->pid, data->uid, data->nice, + data->comm, data->pid, + from_kuid_munged(seq_user_ns(m), data->uid), data->nice, data->policy, data->rt_priority); seq_puts(m, "# -----------------\n"); diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 55e1f7f..40a6f30 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -147,7 +147,7 @@ struct trace_array_cpu { unsigned long skipped_entries; cycle_t preempt_timestamp; pid_t pid; - uid_t uid; + kuid_t uid; char comm[TASK_COMM_LEN]; }; -- 1.7.5.4