From: ebiederm@xmission.com (Eric W. Biederman) To: Andrew Morton <akpm@osdl.org> Cc: Stephen Smalley <sds@tycho.nsa.gov>, Ingo Molnar <mingo@elte.hu>, tglx@linutronix.de, linux-kernel@vger.kernel.org, selinux@tycho.nsa.gov, James Morris <jmorris@namei.org> Subject: [PATCH 5/5] sysctl: Hide the sysctl proc inodes from selinux. Date: Thu, 08 Feb 2007 16:04:20 -0700 [thread overview] Message-ID: <m1lkj86ykr.fsf_-_@ebiederm.dsl.xmission.com> (raw) In-Reply-To: <m1ps8k6yn1.fsf_-_@ebiederm.dsl.xmission.com> (Eric W. Biederman's message of "Thu, 08 Feb 2007 16:02:58 -0700") Since the security checks are applied on each read and write of a sysctl file, just like they are applied when calling sys_sysctl, they are redundant on the standard VFS constructs. Since it is difficult to compute the security labels on the standard VFS constructs we just mark the sysctl inodes in proc private so selinux won't even bother with them. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> --- fs/proc/proc_sysctl.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c index bb16a1e..20e8cbb 100644 --- a/fs/proc/proc_sysctl.c +++ b/fs/proc/proc_sysctl.c @@ -47,6 +47,7 @@ static struct inode *proc_sys_make_inode(struct inode *dir, struct ctl_table *ta inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME; inode->i_op = &proc_sys_inode_operations; inode->i_fop = &proc_sys_file_operations; + inode->i_flags |= S_PRIVATE; /* tell selinux to ignore this inode */ proc_sys_refresh_inode(inode, table); out: return inode; -- 1.4.4.1.g278f
WARNING: multiple messages have this Message-ID (diff)
From: ebiederm@xmission.com (Eric W. Biederman) To: Andrew Morton <akpm@osdl.org> Cc: Stephen Smalley <sds@tycho.nsa.gov>, Ingo Molnar <mingo@elte.hu>, tglx@linutronix.de, linux-kernel@vger.kernel.org, selinux@tycho.nsa.gov, James Morris <jmorris@namei.org> Subject: [PATCH 5/5] sysctl: Hide the sysctl proc inodes from selinux. Date: Thu, 08 Feb 2007 16:04:20 -0700 [thread overview] Message-ID: <m1lkj86ykr.fsf_-_@ebiederm.dsl.xmission.com> (raw) In-Reply-To: <m1ps8k6yn1.fsf_-_@ebiederm.dsl.xmission.com> (Eric W. Biederman's message of "Thu, 08 Feb 2007 16:02:58 -0700") Since the security checks are applied on each read and write of a sysctl file, just like they are applied when calling sys_sysctl, they are redundant on the standard VFS constructs. Since it is difficult to compute the security labels on the standard VFS constructs we just mark the sysctl inodes in proc private so selinux won't even bother with them. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> --- fs/proc/proc_sysctl.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c index bb16a1e..20e8cbb 100644 --- a/fs/proc/proc_sysctl.c +++ b/fs/proc/proc_sysctl.c @@ -47,6 +47,7 @@ static struct inode *proc_sys_make_inode(struct inode *dir, struct ctl_table *ta inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME; inode->i_op = &proc_sys_inode_operations; inode->i_fop = &proc_sys_file_operations; + inode->i_flags |= S_PRIVATE; /* tell selinux to ignore this inode */ proc_sys_refresh_inode(inode, table); out: return inode; -- 1.4.4.1.g278f -- This message was distributed to subscribers of the selinux mailing list. If you no longer wish to subscribe, send mail to majordomo@tycho.nsa.gov with the words "unsubscribe selinux" without quotes as the message.
next prev parent reply other threads:[~2007-02-08 23:05 UTC|newest] Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top 2007-01-28 1:05 + clocksource-add-verification-watchdog-helper-fix-3.patch added to -mm tree akpm [not found] ` <20070127172410.2b041952.akpm@osdl.org> [not found] ` <1169972718.17469.164.camel@localhost.localdomain> [not found] ` <20070128003549.2ca38dc8.akpm@osdl.org> [not found] ` <20070128093358.GA2071@elte.hu> [not found] ` <20070128095712.GA6485@elte.hu> [not found] ` <20070128100627.GA8416@elte.hu> [not found] ` <20070128104548.a835d859.akpm@osdl.org> 2007-01-28 19:21 ` [PATCH] sysctl selinux: Don't look at table->de Eric W. Biederman 2007-01-28 19:21 ` Eric W. Biederman 2007-01-29 13:04 ` Stephen Smalley 2007-01-29 13:04 ` Stephen Smalley 2007-01-29 15:23 ` James Morris 2007-01-29 15:23 ` James Morris 2007-01-29 17:55 ` Eric W. Biederman 2007-01-29 17:55 ` Eric W. Biederman 2007-01-29 19:26 ` Stephen Smalley 2007-01-29 19:26 ` Stephen Smalley 2007-01-29 17:43 ` Eric W. Biederman 2007-01-29 17:43 ` Eric W. Biederman 2007-01-29 18:43 ` Stephen Smalley 2007-01-29 18:43 ` Stephen Smalley 2007-01-29 19:08 ` Casey Schaufler 2007-01-29 19:08 ` Casey Schaufler 2007-01-29 20:07 ` Stephen Smalley 2007-01-29 20:07 ` Stephen Smalley 2007-01-30 10:25 ` Christoph Hellwig 2007-01-30 17:19 ` Casey Schaufler 2007-01-30 17:19 ` Casey Schaufler 2007-01-29 19:16 ` Eric W. Biederman 2007-01-29 19:16 ` Eric W. Biederman 2007-01-29 23:28 ` Russell Coker 2007-01-29 23:28 ` Russell Coker 2007-02-06 21:16 ` [PATCH 1/2] sysctl: Add a parent entry to ctl_table and set the parent entry Eric W. Biederman 2007-02-06 21:16 ` Eric W. Biederman 2007-02-06 21:21 ` [PATCH 2/2] sysctl: Restore the selinux path based label lookup for sysctls Eric W. Biederman 2007-02-06 21:21 ` Eric W. Biederman 2007-02-07 18:24 ` Stephen Smalley 2007-02-07 18:24 ` Stephen Smalley 2007-02-07 21:12 ` Stephen Smalley 2007-02-07 21:12 ` Stephen Smalley 2007-02-07 21:54 ` Stephen Smalley 2007-02-07 21:54 ` Stephen Smalley 2007-02-07 22:21 ` Eric W. Biederman 2007-02-07 22:21 ` Eric W. Biederman 2007-02-08 15:07 ` Stephen Smalley 2007-02-08 15:07 ` Stephen Smalley 2007-02-08 1:57 ` Eric W. Biederman 2007-02-08 1:57 ` Eric W. Biederman 2007-02-08 15:01 ` Stephen Smalley 2007-02-08 15:01 ` Stephen Smalley 2007-02-08 17:53 ` Eric W. Biederman 2007-02-08 17:53 ` Eric W. Biederman 2007-02-08 18:13 ` Stephen Smalley 2007-02-08 18:13 ` Stephen Smalley 2007-02-08 22:17 ` Eric W. Biederman 2007-02-08 22:17 ` Eric W. Biederman 2007-02-08 22:51 ` [PATCH 0/5] sysctl cleanup selinux fixes Eric W. Biederman 2007-02-08 22:51 ` Eric W. Biederman 2007-02-08 22:53 ` [PATCH 1/5] sysctl: Remove declaration of nonexistent sysctl_init() Eric W. Biederman 2007-02-08 22:53 ` Eric W. Biederman 2007-02-08 22:54 ` [PATCH 2/5] sysctl: Set the parent field in the root sysctl table Eric W. Biederman 2007-02-08 22:54 ` Eric W. Biederman 2007-02-08 22:55 ` [PATCH 3/5] sysctl: Fix the selinux_sysctl_get_sid Eric W. Biederman 2007-02-08 22:55 ` Eric W. Biederman 2007-02-08 23:02 ` [PATCH 4/5] selinux: Enhance selinux to always ignore private inodes Eric W. Biederman 2007-02-08 23:02 ` Eric W. Biederman 2007-02-08 23:04 ` Eric W. Biederman [this message] 2007-02-08 23:04 ` [PATCH 5/5] sysctl: Hide the sysctl proc inodes from selinux Eric W. Biederman 2007-02-09 12:26 ` [PATCH 4/5] selinux: Enhance selinux to always ignore private inodes Stephen Smalley 2007-02-09 12:26 ` Stephen Smalley 2007-02-09 12:24 ` [PATCH 3/5] sysctl: Fix the selinux_sysctl_get_sid Stephen Smalley 2007-02-09 12:24 ` Stephen Smalley 2007-02-09 11:05 ` [PATCH 0/5] sysctl cleanup selinux fixes Andrew Morton 2007-02-09 18:09 ` Eric W. Biederman 2007-02-09 18:09 ` Eric W. Biederman
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=m1lkj86ykr.fsf_-_@ebiederm.dsl.xmission.com \ --to=ebiederm@xmission.com \ --cc=akpm@osdl.org \ --cc=jmorris@namei.org \ --cc=linux-kernel@vger.kernel.org \ --cc=mingo@elte.hu \ --cc=sds@tycho.nsa.gov \ --cc=selinux@tycho.nsa.gov \ --cc=tglx@linutronix.de \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.