summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--drivers/tty/tty_audit.c2
-rw-r--r--include/linux/audit.h5
-rw-r--r--include/linux/cred.h15
-rw-r--r--include/net/xfrm.h2
-rw-r--r--include/uapi/linux/audit.h3
-rw-r--r--kernel/audit.c7
-rw-r--r--kernel/audit_tree.c2
-rw-r--r--kernel/audit_watch.c41
-rw-r--r--kernel/auditfilter.c17
-rw-r--r--kernel/auditsc.c14
-rw-r--r--net/netfilter/xt_AUDIT.c2
-rw-r--r--net/netlabel/netlabel_user.c2
12 files changed, 67 insertions, 45 deletions
diff --git a/drivers/tty/tty_audit.c b/drivers/tty/tty_audit.c
index e30aa6bf9ff9..50f567b6a66e 100644
--- a/drivers/tty/tty_audit.c
+++ b/drivers/tty/tty_audit.c
@@ -92,7 +92,7 @@ static void tty_audit_buf_push(struct tty_audit_buf *buf)
{
if (buf->valid == 0)
return;
- if (audit_enabled == 0) {
+ if (audit_enabled == AUDIT_OFF) {
buf->valid = 0;
return;
}
diff --git a/include/linux/audit.h b/include/linux/audit.h
index 69c78477590b..9334fbef7bae 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -117,6 +117,9 @@ struct filename;
extern void audit_log_session_info(struct audit_buffer *ab);
+#define AUDIT_OFF 0
+#define AUDIT_ON 1
+#define AUDIT_LOCKED 2
#ifdef CONFIG_AUDIT
/* These are defined in audit.c */
/* Public API */
@@ -202,7 +205,7 @@ static inline int audit_log_task_context(struct audit_buffer *ab)
static inline void audit_log_task_info(struct audit_buffer *ab,
struct task_struct *tsk)
{ }
-#define audit_enabled 0
+#define audit_enabled AUDIT_OFF
#endif /* CONFIG_AUDIT */
#ifdef CONFIG_AUDIT_COMPAT_GENERIC
diff --git a/include/linux/cred.h b/include/linux/cred.h
index 631286535d0f..7eed6101c791 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -65,6 +65,12 @@ extern void groups_free(struct group_info *);
extern int in_group_p(kgid_t);
extern int in_egroup_p(kgid_t);
+extern int groups_search(const struct group_info *, kgid_t);
+
+extern int set_current_groups(struct group_info *);
+extern void set_groups(struct cred *, struct group_info *);
+extern bool may_setgroups(void);
+extern void groups_sort(struct group_info *);
#else
static inline void groups_free(struct group_info *group_info)
{
@@ -78,12 +84,11 @@ static inline int in_egroup_p(kgid_t grp)
{
return 1;
}
+static inline int groups_search(const struct group_info *group_info, kgid_t grp)
+{
+ return 1;
+}
#endif
-extern int set_current_groups(struct group_info *);
-extern void set_groups(struct cred *, struct group_info *);
-extern int groups_search(const struct group_info *, kgid_t);
-extern bool may_setgroups(void);
-extern void groups_sort(struct group_info *);
/*
* The security context of a task
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 557122846e0e..f7f297727ed8 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -735,7 +735,7 @@ static inline struct audit_buffer *xfrm_audit_start(const char *op)
{
struct audit_buffer *audit_buf = NULL;
- if (audit_enabled == 0)
+ if (audit_enabled == AUDIT_OFF)
return NULL;
audit_buf = audit_log_start(audit_context(), GFP_ATOMIC,
AUDIT_MAC_IPSEC_EVENT);
diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h
index c35aee9ad4a6..4e3eaba84175 100644
--- a/include/uapi/linux/audit.h
+++ b/include/uapi/linux/audit.h
@@ -157,7 +157,8 @@
#define AUDIT_FILTER_ENTRY 0x02 /* Apply rule at syscall entry */
#define AUDIT_FILTER_WATCH 0x03 /* Apply rule to file system watches */
#define AUDIT_FILTER_EXIT 0x04 /* Apply rule at syscall exit */
-#define AUDIT_FILTER_TYPE 0x05 /* Apply rule at audit_log_start */
+#define AUDIT_FILTER_EXCLUDE 0x05 /* Apply rule before record creation */
+#define AUDIT_FILTER_TYPE AUDIT_FILTER_EXCLUDE /* obsolete misleading naming */
#define AUDIT_FILTER_FS 0x06 /* Apply rule at __audit_inode_child */
#define AUDIT_NR_FILTERS 7
diff --git a/kernel/audit.c b/kernel/audit.c
index e7478cb58079..2a8058764aa6 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -83,9 +83,6 @@
#define AUDIT_INITIALIZED 1
static int audit_initialized;
-#define AUDIT_OFF 0
-#define AUDIT_ON 1
-#define AUDIT_LOCKED 2
u32 audit_enabled = AUDIT_OFF;
bool audit_ever_enabled = !!AUDIT_OFF;
@@ -1724,7 +1721,7 @@ static inline void audit_get_stamp(struct audit_context *ctx,
struct timespec64 *t, unsigned int *serial)
{
if (!ctx || !auditsc_get_stamp(ctx, t, serial)) {
- *t = current_kernel_time64();
+ ktime_get_coarse_real_ts64(t);
*serial = audit_serial();
}
}
@@ -1754,7 +1751,7 @@ struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask,
if (audit_initialized != AUDIT_INITIALIZED)
return NULL;
- if (unlikely(!audit_filter(type, AUDIT_FILTER_TYPE)))
+ if (unlikely(!audit_filter(type, AUDIT_FILTER_EXCLUDE)))
return NULL;
/* NOTE: don't ever fail/sleep on these two conditions:
diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c
index c99ebaae5abc..9f6eaeb6919f 100644
--- a/kernel/audit_tree.c
+++ b/kernel/audit_tree.c
@@ -497,6 +497,8 @@ static void audit_tree_log_remove_rule(struct audit_krule *rule)
{
struct audit_buffer *ab;
+ if (!audit_enabled)
+ return;
ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_CONFIG_CHANGE);
if (unlikely(!ab))
return;
diff --git a/kernel/audit_watch.c b/kernel/audit_watch.c
index c17c0c268436..787c7afdf829 100644
--- a/kernel/audit_watch.c
+++ b/kernel/audit_watch.c
@@ -238,20 +238,21 @@ out:
static void audit_watch_log_rule_change(struct audit_krule *r, struct audit_watch *w, char *op)
{
- if (audit_enabled) {
- struct audit_buffer *ab;
- ab = audit_log_start(NULL, GFP_NOFS, AUDIT_CONFIG_CHANGE);
- if (unlikely(!ab))
- return;
- audit_log_format(ab, "auid=%u ses=%u op=%s",
- from_kuid(&init_user_ns, audit_get_loginuid(current)),
- audit_get_sessionid(current), op);
- audit_log_format(ab, " path=");
- audit_log_untrustedstring(ab, w->path);
- audit_log_key(ab, r->filterkey);
- audit_log_format(ab, " list=%d res=1", r->listnr);
- audit_log_end(ab);
- }
+ struct audit_buffer *ab;
+
+ if (!audit_enabled)
+ return;
+ ab = audit_log_start(NULL, GFP_NOFS, AUDIT_CONFIG_CHANGE);
+ if (!ab)
+ return;
+ audit_log_format(ab, "auid=%u ses=%u op=%s",
+ from_kuid(&init_user_ns, audit_get_loginuid(current)),
+ audit_get_sessionid(current), op);
+ audit_log_format(ab, " path=");
+ audit_log_untrustedstring(ab, w->path);
+ audit_log_key(ab, r->filterkey);
+ audit_log_format(ab, " list=%d res=1", r->listnr);
+ audit_log_end(ab);
}
/* Update inode info in audit rules based on filesystem event. */
@@ -419,6 +420,13 @@ int audit_add_watch(struct audit_krule *krule, struct list_head **list)
struct path parent_path;
int h, ret = 0;
+ /*
+ * When we will be calling audit_add_to_parent, krule->watch might have
+ * been updated and watch might have been freed.
+ * So we need to keep a reference of watch.
+ */
+ audit_get_watch(watch);
+
mutex_unlock(&audit_filter_mutex);
/* Avoid calling path_lookup under audit_filter_mutex. */
@@ -427,8 +435,10 @@ int audit_add_watch(struct audit_krule *krule, struct list_head **list)
/* caller expects mutex locked */
mutex_lock(&audit_filter_mutex);
- if (ret)
+ if (ret) {
+ audit_put_watch(watch);
return ret;
+ }
/* either find an old parent or attach a new one */
parent = audit_find_parent(d_backing_inode(parent_path.dentry));
@@ -446,6 +456,7 @@ int audit_add_watch(struct audit_krule *krule, struct list_head **list)
*list = &audit_inode_hash[h];
error:
path_put(&parent_path);
+ audit_put_watch(watch);
return ret;
}
diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index eaa320148d97..bf309f2592c4 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -264,7 +264,7 @@ static inline struct audit_entry *audit_to_entry_common(struct audit_rule_data *
case AUDIT_FILTER_TASK:
#endif
case AUDIT_FILTER_USER:
- case AUDIT_FILTER_TYPE:
+ case AUDIT_FILTER_EXCLUDE:
case AUDIT_FILTER_FS:
;
}
@@ -337,7 +337,7 @@ static int audit_field_valid(struct audit_entry *entry, struct audit_field *f)
{
switch(f->type) {
case AUDIT_MSGTYPE:
- if (entry->rule.listnr != AUDIT_FILTER_TYPE &&
+ if (entry->rule.listnr != AUDIT_FILTER_EXCLUDE &&
entry->rule.listnr != AUDIT_FILTER_USER)
return -EINVAL;
break;
@@ -428,8 +428,6 @@ static int audit_field_valid(struct audit_entry *entry, struct audit_field *f)
case AUDIT_EXE:
if (f->op != Audit_not_equal && f->op != Audit_equal)
return -EINVAL;
- if (entry->rule.listnr != AUDIT_FILTER_EXIT)
- return -EINVAL;
break;
}
return 0;
@@ -931,7 +929,7 @@ static inline int audit_add_rule(struct audit_entry *entry)
/* If any of these, don't count towards total */
switch(entry->rule.listnr) {
case AUDIT_FILTER_USER:
- case AUDIT_FILTER_TYPE:
+ case AUDIT_FILTER_EXCLUDE:
case AUDIT_FILTER_FS:
dont_count = 1;
}
@@ -1013,7 +1011,7 @@ int audit_del_rule(struct audit_entry *entry)
/* If any of these, don't count towards total */
switch(entry->rule.listnr) {
case AUDIT_FILTER_USER:
- case AUDIT_FILTER_TYPE:
+ case AUDIT_FILTER_EXCLUDE:
case AUDIT_FILTER_FS:
dont_count = 1;
}
@@ -1360,6 +1358,11 @@ int audit_filter(int msgtype, unsigned int listtype)
f->type, f->op, f->lsm_rule, NULL);
}
break;
+ case AUDIT_EXE:
+ result = audit_exe_compare(current, e->rule.exe);
+ if (f->op == Audit_not_equal)
+ result = !result;
+ break;
default:
goto unlock_and_return;
}
@@ -1369,7 +1372,7 @@ int audit_filter(int msgtype, unsigned int listtype)
break;
}
if (result > 0) {
- if (e->rule.action == AUDIT_NEVER || listtype == AUDIT_FILTER_TYPE)
+ if (e->rule.action == AUDIT_NEVER || listtype == AUDIT_FILTER_EXCLUDE)
ret = 0;
break;
}
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 80d672a11088..b2d1f043f17f 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -494,20 +494,20 @@ static int audit_filter_rules(struct task_struct *tsk,
result = audit_gid_comparator(cred->gid, f->op, f->gid);
if (f->op == Audit_equal) {
if (!result)
- result = in_group_p(f->gid);
+ result = groups_search(cred->group_info, f->gid);
} else if (f->op == Audit_not_equal) {
if (result)
- result = !in_group_p(f->gid);
+ result = !groups_search(cred->group_info, f->gid);
}
break;
case AUDIT_EGID:
result = audit_gid_comparator(cred->egid, f->op, f->gid);
if (f->op == Audit_equal) {
if (!result)
- result = in_egroup_p(f->gid);
+ result = groups_search(cred->group_info, f->gid);
} else if (f->op == Audit_not_equal) {
if (result)
- result = !in_egroup_p(f->gid);
+ result = !groups_search(cred->group_info, f->gid);
}
break;
case AUDIT_SGID:
@@ -1544,10 +1544,10 @@ void __audit_syscall_entry(int major, unsigned long a1, unsigned long a2,
context->argv[2] = a3;
context->argv[3] = a4;
context->serial = 0;
- context->ctime = current_kernel_time64();
context->in_syscall = 1;
context->current_state = state;
context->ppid = 0;
+ ktime_get_coarse_real_ts64(&context->ctime);
}
/**
@@ -2466,7 +2466,7 @@ void audit_core_dumps(long signr)
if (signr == SIGQUIT) /* don't care for those */
return;
- ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_ANOM_ABEND);
+ ab = audit_log_start(audit_context(), GFP_KERNEL, AUDIT_ANOM_ABEND);
if (unlikely(!ab))
return;
audit_log_task(ab);
@@ -2490,7 +2490,7 @@ void audit_seccomp(unsigned long syscall, long signr, int code)
{
struct audit_buffer *ab;
- ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_SECCOMP);
+ ab = audit_log_start(audit_context(), GFP_KERNEL, AUDIT_SECCOMP);
if (unlikely(!ab))
return;
audit_log_task(ab);
diff --git a/net/netfilter/xt_AUDIT.c b/net/netfilter/xt_AUDIT.c
index f368ee6741db..af883f1b64f9 100644
--- a/net/netfilter/xt_AUDIT.c
+++ b/net/netfilter/xt_AUDIT.c
@@ -72,7 +72,7 @@ audit_tg(struct sk_buff *skb, const struct xt_action_param *par)
struct audit_buffer *ab;
int fam = -1;
- if (audit_enabled == 0)
+ if (audit_enabled == AUDIT_OFF)
goto errout;
ab = audit_log_start(NULL, GFP_ATOMIC, AUDIT_NETFILTER_PKT);
if (ab == NULL)
diff --git a/net/netlabel/netlabel_user.c b/net/netlabel/netlabel_user.c
index 2f328af91a52..4676f5bb16ae 100644
--- a/net/netlabel/netlabel_user.c
+++ b/net/netlabel/netlabel_user.c
@@ -101,7 +101,7 @@ struct audit_buffer *netlbl_audit_start_common(int type,
char *secctx;
u32 secctx_len;
- if (audit_enabled == 0)
+ if (audit_enabled == AUDIT_OFF)
return NULL;
audit_buf = audit_log_start(audit_context(), GFP_ATOMIC, type);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-27 21:43:15 +0000