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From: ebiederm@xmission.com (Eric W. Biederman)
To: Andrew Morton <akpm@osdl.org>
Cc: Ingo Molnar <mingo@elte.hu>,
tglx@linutronix.de, linux-kernel@vger.kernel.org,
selinux@tycho.nsa.gov, jmorris@namei.org,
Stephen Smalley <sds@tycho.nsa.gov>
Subject: [PATCH 1/2] sysctl: Add a parent entry to ctl_table and set the parent entry.
Date: Tue, 06 Feb 2007 14:16:39 -0700 [thread overview]
Message-ID: <m17iuvrnpk.fsf_-_@ebiederm.dsl.xmission.com> (raw)
In-Reply-To: <1170075866.8720.15.camel@moss-spartans.epoch.ncsc.mil> (Stephen Smalley's message of "Mon, 29 Jan 2007 08:04:26 -0500")
Add a parent entry into the ctl_table so you can walk the list of
parents and find the entire path to a ctl_table entry.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
---
This is an incremental patch on top of my previous sysctl work.
include/linux/sysctl.h | 1 +
kernel/sysctl.c | 10 ++++++++++
2 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index 286e723..24f36f1 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -1024,6 +1024,7 @@ struct ctl_table
int maxlen;
mode_t mode;
ctl_table *child;
+ ctl_table *parent; /* Automatically set */
proc_handler *proc_handler; /* Callback for text formatting */
ctl_handler *strategy; /* Callback function for all r/w */
void *extra1;
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index ae6a424..0a5499f 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1232,6 +1232,15 @@ int do_sysctl_strategy (ctl_table *table,
}
#endif /* CONFIG_SYSCTL_SYSCALL */
+static void sysctl_set_parent(struct ctl_table *parent, struct ctl_table *table)
+{
+ for (; table->ctl_name || table->procname; table++) {
+ table->parent = parent;
+ if (table->child)
+ sysctl_set_parent(table, table->child);
+ }
+}
+
/**
* register_sysctl_table - register a sysctl hierarchy
* @table: the top-level table structure
@@ -1311,6 +1320,7 @@ static struct ctl_table_header *__register_sysctl_table(
INIT_LIST_HEAD(&tmp->ctl_entry);
tmp->used = 0;
tmp->unregistering = NULL;
+ sysctl_set_parent(NULL, table);
spin_lock(&sysctl_lock);
list_add_tail(&tmp->ctl_entry, &root->ctl_entry);
spin_unlock(&sysctl_lock);
--
1.4.4.1.g278f
next prev parent reply other threads:[~2007-02-06 21:17 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200701280106.l0S16CG3019873@shell0.pdx.osdl.net>
[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
2007-01-29 13:04 ` Stephen Smalley
2007-01-29 15:23 ` James Morris
2007-01-29 17:55 ` Eric W. Biederman
2007-01-29 19:26 ` Stephen Smalley
2007-01-29 17:43 ` Eric W. Biederman
2007-01-29 18:43 ` Stephen Smalley
2007-01-29 19:08 ` Casey Schaufler
2007-01-29 20:07 ` Stephen Smalley
2007-01-30 10:25 ` Christoph Hellwig
2007-01-30 17:19 ` Casey Schaufler
2007-01-29 19:16 ` Eric W. Biederman
2007-01-29 23:28 ` Russell Coker
2007-02-06 21:16 ` Eric W. Biederman [this message]
2007-02-06 21:21 ` [PATCH 2/2] sysctl: Restore the selinux path based label lookup for sysctls Eric W. Biederman
2007-02-07 18:24 ` Stephen Smalley
2007-02-07 21:12 ` Stephen Smalley
2007-02-07 21:54 ` Stephen Smalley
2007-02-07 22:21 ` Eric W. Biederman
2007-02-08 15:07 ` Stephen Smalley
2007-02-08 1:57 ` Eric W. Biederman
2007-02-08 15:01 ` Stephen Smalley
2007-02-08 17:53 ` Eric W. Biederman
2007-02-08 18:13 ` Stephen Smalley
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 22:53 ` [PATCH 1/5] sysctl: Remove declaration of nonexistent sysctl_init() 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 22:55 ` [PATCH 3/5] sysctl: Fix the selinux_sysctl_get_sid 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 23:04 ` [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 12:24 ` [PATCH 3/5] sysctl: Fix the selinux_sysctl_get_sid Stephen Smalley
2007-02-09 11:05 ` [PATCH 0/5] sysctl cleanup selinux fixes Andrew Morton
2007-02-09 18:09 ` Eric W. Biederman
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