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Message-Id: <1367893269-9308-48-git-send-email-gaofeng@cn.fujitsu.com>
Date: Tue, 7 May 2013 10:21:08 +0800
From: Gao feng <gaofeng@...fujitsu.com>
To: viro@...iv.linux.org.uk, eparis@...hat.com, ebiederm@...ssion.com,
sgrubb@...hat.com, akpm@...ux-foundation.org,
serge.hallyn@...ntu.com, davem@...emloft.net
Cc: netdev@...r.kernel.org, containers@...ts.linux-foundation.org,
linux-kernel@...r.kernel.org, linux-audit@...hat.com,
Gao feng <gaofeng@...fujitsu.com>
Subject: [PATCH RFC 47/48] Audit: make audit_log user namespace awared
This patch makes audit_log user namespace awared.
Signed-off-by: Gao feng <gaofeng@...fujitsu.com>
---
include/linux/audit.h | 12 ++++++------
kernel/audit.c | 11 ++++++-----
net/core/dev.c | 12 +++++++-----
security/selinux/avc.c | 3 ++-
security/selinux/hooks.c | 3 ++-
security/selinux/selinuxfs.c | 9 ++++++---
security/selinux/ss/services.c | 24 +++++++++++++++---------
security/smack/smack_lsm.c | 3 ++-
8 files changed, 46 insertions(+), 31 deletions(-)
diff --git a/include/linux/audit.h b/include/linux/audit.h
index 3f5dbe3..3af4d5d 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -395,9 +395,9 @@ static inline void audit_ptrace(struct task_struct *t)
#ifdef CONFIG_AUDIT
/* These are defined in audit.c */
/* Public API */
-extern __printf(4, 5)
-void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
- const char *fmt, ...);
+extern __printf(5, 6)
+void audit_log(struct user_namespace *ns, struct audit_context *ctx,
+ gfp_t gfp_mask, int type, const char *fmt, ...);
extern struct audit_buffer *
audit_log_start(struct user_namespace *ns, struct audit_context *ctx,
@@ -448,9 +448,9 @@ extern int audit_receive_filter(int type, int pid, int seq,
u32 sessionid, u32 sid);
#define audit_enabled(ns) (ns->audit.enabled)
#else /* CONFIG_AUDIT */
-static inline __printf(4, 5)
-void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
- const char *fmt, ...)
+static inline __printf(5, 6)
+void audit_log(struct user_namespace *ns, struct audit_context *ctx,
+ gfp_t gfp_mask, int type, const char *fmt, ...)
{ }
static inline
struct audit_buffer *audit_log_start(struct user_namespace *ns,
diff --git a/kernel/audit.c b/kernel/audit.c
index da1c0ad..59e5cca 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -998,7 +998,8 @@ static int __init audit_init(void)
audit_set_user_ns(&init_user_ns);
- audit_log(NULL, GFP_KERNEL, AUDIT_KERNEL, "initialized");
+ audit_log(&init_user_ns, NULL, GFP_KERNEL,
+ AUDIT_KERNEL, "initialized");
return 0;
}
@@ -1541,18 +1542,18 @@ void audit_log_end(struct user_namespace *ns, struct audit_buffer *ab)
* audit_log_vformat, and audit_log_end. It may be called
* in any context.
*/
-void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
- const char *fmt, ...)
+void audit_log(struct user_namespace *ns, struct audit_context *ctx,
+ gfp_t gfp_mask, int type, const char *fmt, ...)
{
struct audit_buffer *ab;
va_list args;
- ab = audit_log_start(&init_user_ns, ctx, gfp_mask, type);
+ ab = audit_log_start(ns, ctx, gfp_mask, type);
if (ab) {
va_start(args, fmt);
audit_log_vformat(ab, fmt, args);
va_end(args);
- audit_log_end(&init_user_ns, ab);
+ audit_log_end(ns, ab);
}
}
diff --git a/net/core/dev.c b/net/core/dev.c
index 128ee39..53a4af7 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4455,19 +4455,21 @@ static int __dev_set_promiscuity(struct net_device *dev, int inc)
}
}
if (dev->flags != old_flags) {
+ struct user_namespace *ns = current_user_ns();
pr_info("device %s %s promiscuous mode\n",
dev->name,
dev->flags & IFF_PROMISC ? "entered" : "left");
- if (audit_enabled(current_user_ns())) {
+ if (audit_enabled(ns)) {
current_uid_gid(&uid, &gid);
- audit_log(current->audit_context, GFP_ATOMIC,
+ audit_log(ns, current->audit_context,
+ GFP_ATOMIC,
AUDIT_ANOM_PROMISCUOUS,
"dev=%s prom=%d old_prom=%d auid=%u uid=%u gid=%u ses=%u",
dev->name, (dev->flags & IFF_PROMISC),
(old_flags & IFF_PROMISC),
- from_kuid(&init_user_ns, audit_get_loginuid(current)),
- from_kuid(&init_user_ns, uid),
- from_kgid(&init_user_ns, gid),
+ from_kuid(ns, audit_get_loginuid(current)),
+ from_kuid(ns, uid),
+ from_kgid(ns, gid),
audit_get_sessionid(current));
}
diff --git a/security/selinux/avc.c b/security/selinux/avc.c
index dad36a6..5559be3 100644
--- a/security/selinux/avc.c
+++ b/security/selinux/avc.c
@@ -172,7 +172,8 @@ void __init avc_init(void)
avc_node_cachep = kmem_cache_create("avc_node", sizeof(struct avc_node),
0, SLAB_PANIC, NULL);
- audit_log(current->audit_context, GFP_KERNEL, AUDIT_KERNEL, "AVC INITIALIZED\n");
+ audit_log(current_user_ns(), current->audit_context,
+ GFP_KERNEL, AUDIT_KERNEL, "AVC INITIALIZED\n");
}
int avc_get_hash_stats(char *page)
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 3e5a906..ac924af 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -4523,7 +4523,8 @@ static int selinux_nlmsg_perm(struct sock *sk, struct sk_buff *skb)
err = selinux_nlmsg_lookup(sksec->sclass, nlh->nlmsg_type, &perm);
if (err) {
if (err == -EINVAL) {
- audit_log(current->audit_context, GFP_KERNEL, AUDIT_SELINUX_ERR,
+ audit_log(current_user_ns(), current->audit_context,
+ GFP_KERNEL, AUDIT_SELINUX_ERR,
"SELinux: unrecognized netlink message"
" type=%hu for sclass=%hu\n",
nlh->nlmsg_type, sksec->sclass);
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index ff42773..4969a5d 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -171,7 +171,8 @@ static ssize_t sel_write_enforce(struct file *file, const char __user *buf,
length = task_has_security(current, SECURITY__SETENFORCE);
if (length)
goto out;
- audit_log(current->audit_context, GFP_KERNEL, AUDIT_MAC_STATUS,
+ audit_log(current_user_ns(), current->audit_context,
+ GFP_KERNEL, AUDIT_MAC_STATUS,
"enforcing=%d old_enforcing=%d auid=%u ses=%u",
new_value, selinux_enforcing,
from_kuid(&init_user_ns, audit_get_loginuid(current)),
@@ -303,7 +304,8 @@ static ssize_t sel_write_disable(struct file *file, const char __user *buf,
length = selinux_disable();
if (length)
goto out;
- audit_log(current->audit_context, GFP_KERNEL, AUDIT_MAC_STATUS,
+ audit_log(current_user_ns(), current->audit_context,
+ GFP_KERNEL, AUDIT_MAC_STATUS,
"selinux=0 auid=%u ses=%u",
from_kuid(&init_user_ns, audit_get_loginuid(current)),
audit_get_sessionid(current));
@@ -549,7 +551,8 @@ static ssize_t sel_write_load(struct file *file, const char __user *buf,
length = count;
out1:
- audit_log(current->audit_context, GFP_KERNEL, AUDIT_MAC_POLICY_LOAD,
+ audit_log(current_user_ns(), current->audit_context,
+ GFP_KERNEL, AUDIT_MAC_POLICY_LOAD,
"policy loaded auid=%u ses=%u",
from_kuid(&init_user_ns, audit_get_loginuid(current)),
audit_get_sessionid(current));
diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c
index 9cdd1e5..81c6f71 100644
--- a/security/selinux/ss/services.c
+++ b/security/selinux/ss/services.c
@@ -728,7 +728,8 @@ static int security_validtrans_handle_fail(struct context *ocontext,
goto out;
if (context_struct_to_string(tcontext, &t, &tlen))
goto out;
- audit_log(current->audit_context, GFP_ATOMIC, AUDIT_SELINUX_ERR,
+ audit_log(current_user_ns(), current->audit_context,
+ GFP_ATOMIC, AUDIT_SELINUX_ERR,
"security_validate_transition: denied for"
" oldcontext=%s newcontext=%s taskcontext=%s tclass=%s",
o, n, t, sym_name(&policydb, SYM_CLASSES, tclass-1));
@@ -875,7 +876,7 @@ int security_bounded_transition(u32 old_sid, u32 new_sid)
&old_name, &length) &&
!context_struct_to_string(new_context,
&new_name, &length)) {
- audit_log(current->audit_context,
+ audit_log(current_user_ns(), current->audit_context,
GFP_ATOMIC, AUDIT_SELINUX_ERR,
"op=security_bounded_transition "
"result=denied "
@@ -1345,7 +1346,8 @@ static int compute_sid_handle_invalid_context(
goto out;
if (context_struct_to_string(newcontext, &n, &nlen))
goto out;
- audit_log(current->audit_context, GFP_ATOMIC, AUDIT_SELINUX_ERR,
+ audit_log(current_user_ns(), current->audit_context,
+ GFP_ATOMIC, AUDIT_SELINUX_ERR,
"security_compute_sid: invalid context %s"
" for scontext=%s"
" tcontext=%s"
@@ -2436,8 +2438,8 @@ int security_set_bools(int len, int *values)
for (i = 0; i < len; i++) {
if (!!values[i] != policydb.bool_val_to_struct[i]->state) {
- audit_log(current->audit_context, GFP_ATOMIC,
- AUDIT_MAC_CONFIG_CHANGE,
+ audit_log(current_user_ns(), current->audit_context,
+ GFP_ATOMIC, AUDIT_MAC_CONFIG_CHANGE,
"bool=%s val=%d old_val=%d auid=%u ses=%u",
sym_name(&policydb, SYM_BOOLS, i),
!!values[i],
@@ -2570,7 +2572,8 @@ int security_sid_mls_copy(u32 sid, u32 mls_sid, u32 *new_sid)
rc = convert_context_handle_invalid_context(&newcon);
if (rc) {
if (!context_struct_to_string(&newcon, &s, &len)) {
- audit_log(current->audit_context, GFP_ATOMIC, AUDIT_SELINUX_ERR,
+ audit_log(current_user_ns(), current->audit_context,
+ GFP_ATOMIC, AUDIT_SELINUX_ERR,
"security_sid_mls_copy: invalid context %s", s);
kfree(s);
}
@@ -2941,7 +2944,8 @@ int selinux_audit_rule_match(u32 sid, u32 field, u32 op, void *vrule,
int match = 0;
if (!rule) {
- audit_log(actx, GFP_ATOMIC, AUDIT_SELINUX_ERR,
+ audit_log(current_user_ns(), actx,
+ GFP_ATOMIC, AUDIT_SELINUX_ERR,
"selinux_audit_rule_match: missing rule\n");
return -ENOENT;
}
@@ -2949,7 +2953,8 @@ int selinux_audit_rule_match(u32 sid, u32 field, u32 op, void *vrule,
read_lock(&policy_rwlock);
if (rule->au_seqno < latest_granting) {
- audit_log(actx, GFP_ATOMIC, AUDIT_SELINUX_ERR,
+ audit_log(current_user_ns(), actx,
+ GFP_ATOMIC, AUDIT_SELINUX_ERR,
"selinux_audit_rule_match: stale rule\n");
match = -ESTALE;
goto out;
@@ -2957,7 +2962,8 @@ int selinux_audit_rule_match(u32 sid, u32 field, u32 op, void *vrule,
ctxt = sidtab_search(&sidtab, sid);
if (!ctxt) {
- audit_log(actx, GFP_ATOMIC, AUDIT_SELINUX_ERR,
+ audit_log(current_user_ns(), actx,
+ GFP_ATOMIC, AUDIT_SELINUX_ERR,
"selinux_audit_rule_match: unrecognized SID %d\n",
sid);
match = -ENOENT;
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c
index d52c780..816d3bb 100644
--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -3292,7 +3292,8 @@ static int smack_audit_rule_match(u32 secid, u32 field, u32 op, void *vrule,
char *rule = vrule;
if (!rule) {
- audit_log(actx, GFP_ATOMIC, AUDIT_SELINUX_ERR,
+ audit_log(current_user_ns(), actx,
+ GFP_ATOMIC, AUDIT_SELINUX_ERR,
"Smack: missing rule\n");
return -ENOENT;
}
--
1.8.1.4
--
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