Merge tag 'v3.10.55' into update

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / kernel / audit.c

diff --git a/kernel/audit.c b/kernel/audit.c
index 91e53d04b6a9e8841e697dcb290f1206468da21a..74f8647fef26aafd8af4a4c2ddf6c8212948c72b 100644 (file)
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -103,7 +103,8 @@ static int  audit_rate_limit;
 
 /* Number of outstanding audit_buffers allowed. */
 static int     audit_backlog_limit = 64;
-static int     audit_backlog_wait_time = 60 * HZ;
+#define AUDIT_BACKLOG_WAIT_TIME (60 * HZ)
+static int     audit_backlog_wait_time = AUDIT_BACKLOG_WAIT_TIME;
 static int     audit_backlog_wait_overflow = 0;
 
 /* The identity of the user shutting down the audit system. */
@@ -371,8 +372,9 @@ static void audit_printk_skb(struct sk_buff *skb)
        char *data = nlmsg_data(nlh);
 
        if (nlh->nlmsg_type != AUDIT_EOE) {
-               if (printk_ratelimit())
+               if (printk_ratelimit()){
                        printk(KERN_NOTICE "type=%d %s\n", nlh->nlmsg_type, data);
+               }               
                else
                        audit_log_lost("printk limit exceeded\n");
        }
@@ -592,13 +594,13 @@ static int audit_netlink_ok(struct sk_buff *skb, u16 msg_type)
        case AUDIT_TTY_SET:
        case AUDIT_TRIM:
        case AUDIT_MAKE_EQUIV:
-               if (!capable(CAP_AUDIT_CONTROL))
+               if (!netlink_capable(skb, CAP_AUDIT_CONTROL))
                        err = -EPERM;
                break;
        case AUDIT_USER:
        case AUDIT_FIRST_USER_MSG ... AUDIT_LAST_USER_MSG:
        case AUDIT_FIRST_USER_MSG2 ... AUDIT_LAST_USER_MSG2:
-               if (!capable(CAP_AUDIT_WRITE))
+               if (!netlink_capable(skb, CAP_AUDIT_WRITE))
                        err = -EPERM;
                break;
        default:  /* bad msg */
@@ -613,7 +615,7 @@ static int audit_log_common_recv_msg(struct audit_buffer **ab, u16 msg_type)
        int rc = 0;
        uid_t uid = from_kuid(&init_user_ns, current_uid());
 
-       if (!audit_enabled) {
+       if (!audit_enabled && msg_type != AUDIT_USER_AVC) {
                *ab = NULL;
                return rc;
        }
@@ -659,6 +661,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 
        switch (msg_type) {
        case AUDIT_GET:
+               status_set.mask          = 0;
                status_set.enabled       = audit_enabled;
                status_set.failure       = audit_failure;
                status_set.pid           = audit_pid;
@@ -670,7 +673,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                                 &status_set, sizeof(status_set));
                break;
        case AUDIT_SET:
-               if (nlh->nlmsg_len < sizeof(struct audit_status))
+               if (nlmsg_len(nlh) < sizeof(struct audit_status))
                        return -EINVAL;
                status_get   = (struct audit_status *)data;
                if (status_get->mask & AUDIT_STATUS_ENABLED) {
@@ -832,7 +835,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 
                memset(&s, 0, sizeof(s));
                /* guard against past and future API changes */
-               memcpy(&s, data, min(sizeof(s), (size_t)nlh->nlmsg_len));
+               memcpy(&s, data, min_t(size_t, sizeof(s), nlmsg_len(nlh)));
                if ((s.enabled != 0 && s.enabled != 1) ||
                    (s.log_passwd != 0 && s.log_passwd != 1))
                        return -EINVAL;
@@ -1117,9 +1120,10 @@ struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask,
 
                        sleep_time = timeout_start + audit_backlog_wait_time -
                                        jiffies;
-                       if ((long)sleep_time > 0)
+                       if ((long)sleep_time > 0) {
                                wait_for_auditd(sleep_time);
-                       continue;
+                               continue;
+                       }
                }
                if (audit_rate_check() && printk_ratelimit())
                        printk(KERN_WARNING
@@ -1133,6 +1137,8 @@ struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask,
                return NULL;
        }
 
+       audit_backlog_wait_time = AUDIT_BACKLOG_WAIT_TIME;
+
        ab = audit_buffer_alloc(ctx, gfp_mask, type);
        if (!ab) {
                audit_log_lost("out of memory in audit_log_start");
@@ -1407,7 +1413,7 @@ void audit_log_cap(struct audit_buffer *ab, char *prefix, kernel_cap_t *cap)
        audit_log_format(ab, " %s=", prefix);
        CAP_FOR_EACH_U32(i) {
                audit_log_format(ab, "%08x",
-                                cap->cap[(_KERNEL_CAPABILITY_U32S-1) - i]);
+                                cap->cap[CAP_LAST_U32 - i]);
        }
 }
 
@@ -1535,6 +1541,26 @@ void audit_log_name(struct audit_context *context, struct audit_names *n,
                }
        }
 
+       /* log the audit_names record type */
+       audit_log_format(ab, " nametype=");
+       switch(n->type) {
+       case AUDIT_TYPE_NORMAL:
+               audit_log_format(ab, "NORMAL");
+               break;
+       case AUDIT_TYPE_PARENT:
+               audit_log_format(ab, "PARENT");
+               break;
+       case AUDIT_TYPE_CHILD_DELETE:
+               audit_log_format(ab, "DELETE");
+               break;
+       case AUDIT_TYPE_CHILD_CREATE:
+               audit_log_format(ab, "CREATE");
+               break;
+       default:
+               audit_log_format(ab, "UNKNOWN");
+               break;
+       }
+
        audit_log_fcaps(ab, n);
        audit_log_end(ab);
 }