From: Casey Schaufler <casey@schaufler-ca.com>
To: linux-integrity@vger.kernel.org, zohar@linux.ibm.com
Subject: [v11-ima PATCH 24/25] LSM: Add /proc attr entry for full LSM context
Date: Wed, 27 Nov 2019 13:37:17 -0800 [thread overview]
Message-ID: <20191127213718.18267-25-casey@schaufler-ca.com> (raw)
In-Reply-To: <20191127213718.18267-1-casey@schaufler-ca.com>
Add an entry /proc/.../attr/context which displays the full
process security "context" in compound format:'
lsm1\0value\0lsm2\0value\0...
This entry is not writable.
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
cc: linux-api@vger.kernel.org
---
fs/proc/base.c | 1 +
security/security.c | 27 +++++++++++++++++++++++++++
2 files changed, 28 insertions(+)
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 950c200cb9ad..d13c2cf50e4b 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2653,6 +2653,7 @@ static const struct pid_entry attr_dir_stuff[] = {
ATTR(NULL, "keycreate", 0666),
ATTR(NULL, "sockcreate", 0666),
ATTR(NULL, "display", 0666),
+ ATTR(NULL, "context", 0666),
#ifdef CONFIG_SECURITY_SMACK
DIR("smack", 0555,
proc_smack_attr_dir_inode_ops, proc_smack_attr_dir_ops),
diff --git a/security/security.c b/security/security.c
index f1fefa187ef8..7e5353f98988 100644
--- a/security/security.c
+++ b/security/security.c
@@ -2099,6 +2099,10 @@ int security_getprocattr(struct task_struct *p, const char *lsm, char *name,
char **value)
{
struct security_hook_list *hp;
+ char *final = NULL;
+ char *cp;
+ int rc = 0;
+ int finallen = 0;
int display = lsm_task_display(current);
int slot = 0;
@@ -2126,6 +2130,29 @@ int security_getprocattr(struct task_struct *p, const char *lsm, char *name,
return -ENOMEM;
}
+ if (!strcmp(name, "context")) {
+ hlist_for_each_entry(hp, &security_hook_heads.getprocattr,
+ list) {
+ rc = hp->hook.getprocattr(p, "current", &cp);
+ if (rc == -EINVAL || rc == -ENOPROTOOPT)
+ continue;
+ if (rc < 0) {
+ kfree(final);
+ return rc;
+ }
+ rc = append_ctx(&final, &finallen, hp->lsmid->lsm,
+ cp, rc);
+ if (rc < 0) {
+ kfree(final);
+ return rc;
+ }
+ }
+ if (final == NULL)
+ return -EINVAL;
+ *value = final;
+ return finallen;
+ }
+
hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) {
if (lsm != NULL && strcmp(lsm, hp->lsmid->lsm))
continue;
--
2.20.1
next prev parent reply other threads:[~2019-11-27 21:38 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20191127213718.18267-1-casey.ref@schaufler-ca.com>
2019-11-27 21:36 ` [v11-ima PATCH 00/25] LSM: Module stacking for AppArmor Casey Schaufler
2019-11-27 21:36 ` [v11-ima PATCH 01/25] LSM: Infrastructure management of the sock security Casey Schaufler
2019-11-27 21:36 ` [v11-ima PATCH 02/25] LSM: Create and manage the lsmblob data structure Casey Schaufler
2019-11-27 21:36 ` [v11-ima PATCH 03/25] LSM: Use lsmblob in security_audit_rule_match Casey Schaufler
2019-11-27 21:36 ` [v11-ima PATCH 04/25] LSM: Use lsmblob in security_kernel_act_as Casey Schaufler
2019-11-27 21:36 ` [v11-ima PATCH 05/25] net: Prepare UDS for security module stacking Casey Schaufler
2019-11-27 21:36 ` [v11-ima PATCH 06/25] LSM: Use lsmblob in security_secctx_to_secid Casey Schaufler
2019-11-27 21:37 ` [v11-ima PATCH 07/25] LSM: Use lsmblob in security_secid_to_secctx Casey Schaufler
2019-11-27 21:37 ` [v11-ima PATCH 08/25] LSM: Use lsmblob in security_ipc_getsecid Casey Schaufler
2019-11-27 21:37 ` [v11-ima PATCH 09/25] LSM: Use lsmblob in security_task_getsecid Casey Schaufler
2019-11-27 21:37 ` [v11-ima PATCH 10/25] LSM: Use lsmblob in security_inode_getsecid Casey Schaufler
2019-11-27 21:37 ` [v11-ima PATCH 11/25] LSM: Use lsmblob in security_cred_getsecid Casey Schaufler
2019-11-27 21:37 ` [v11-ima PATCH 12/25] IMA: Change internal interfaces to use lsmblobs Casey Schaufler
2019-11-27 21:37 ` [v11-ima PATCH 13/25] LSM: Specify which LSM to display Casey Schaufler
2019-11-27 21:37 ` [v11-ima PATCH 14/25] LSM: Ensure the correct LSM context releaser Casey Schaufler
2019-11-27 21:37 ` [v11-ima PATCH 15/25] LSM: Use lsmcontext in security_secid_to_secctx Casey Schaufler
2019-11-27 21:37 ` [v11-ima PATCH 16/25] LSM: Use lsmcontext in security_dentry_init_security Casey Schaufler
2019-11-27 21:37 ` [v11-ima PATCH 17/25] LSM: Use lsmcontext in security_inode_getsecctx Casey Schaufler
2019-11-27 21:37 ` [v11-ima PATCH 18/25] LSM: security_secid_to_secctx in netlink netfilter Casey Schaufler
2019-11-27 21:37 ` [v11-ima PATCH 19/25] NET: Store LSM netlabel data in a lsmblob Casey Schaufler
2019-11-27 21:37 ` [v11-ima PATCH 20/25] LSM: Verify LSM display sanity in binder Casey Schaufler
2019-12-02 19:56 ` Serge E. Hallyn
2019-11-27 21:37 ` [v11-ima PATCH 21/25] Audit: Add subj_LSM fields when necessary Casey Schaufler
2019-11-27 21:37 ` [v11-ima PATCH 22/25] Audit: Include object data for all security modules Casey Schaufler
2019-11-27 21:37 ` [v11-ima PATCH 23/25] NET: Add SO_PEERCONTEXT for multiple LSMs Casey Schaufler
2019-11-27 21:37 ` Casey Schaufler [this message]
2019-11-27 21:37 ` [v11-ima PATCH 25/25] AppArmor: Remove the exclusive flag Casey Schaufler
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