Merge master.kernel.org:/pub/scm/linux/kernel/git/dwmw2/audit-2.6

16 files changed, 674 insertions, 433 deletions

diff --git a/arch/ppc/Kconfig b/arch/ppc/Kconfig
index 6e6377a69d5b..54ce6da22644 100644
--- a/arch/ppc/Kconfig
+++ b/arch/ppc/Kconfig
@@ -1083,6 +1083,23 @@ source "drivers/zorro/Kconfig"
 
 source kernel/power/Kconfig
 
+config SECCOMP
+        bool "Enable seccomp to safely compute untrusted bytecode"
+        depends on PROC_FS
+        default y
+        help
+          This kernel feature is useful for number crunching applications
+          that may need to compute untrusted bytecode during their
+          execution. By using pipes or other transports made available to
+          the process as file descriptors supporting the read/write
+          syscalls, it's possible to isolate those applications in
+          their own address space using seccomp. Once seccomp is
+          enabled via /proc/<pid>/seccomp, it cannot be disabled
+          and the task is only allowed to execute a few safe syscalls
+          defined by each seccomp mode.
+
+          If unsure, say Y. Only embedded should say N here.
+
 endmenu
 
 config ISA_DMA_API
diff --git a/arch/ppc/kernel/entry.S b/arch/ppc/kernel/entry.S
index 5f075dbc4ee7..661523707e8c 100644
--- a/arch/ppc/kernel/entry.S
+++ b/arch/ppc/kernel/entry.S
@@ -202,7 +202,7 @@ _GLOBAL(DoSyscall)
         rlwinm  r11,r11,0,~_TIFL_FORCE_NOERROR
         stw     r11,TI_LOCAL_FLAGS(r10)
         lwz     r11,TI_FLAGS(r10)
-        andi.   r11,r11,_TIF_SYSCALL_TRACE
+        andi.   r11,r11,_TIF_SYSCALL_T_OR_A
         bne-    syscall_dotrace
 syscall_dotrace_cont:
         cmplwi  0,r0,NR_syscalls
@@ -237,7 +237,7 @@ ret_from_syscall:
         SYNC
         MTMSRD(r10)
         lwz     r9,TI_FLAGS(r12)
-        andi.   r0,r9,(_TIF_SYSCALL_TRACE|_TIF_SIGPENDING|_TIF_NEED_RESCHED)
+        andi.   r0,r9,(_TIF_SYSCALL_T_OR_A|_TIF_SIGPENDING|_TIF_NEED_RESCHED)
         bne-    syscall_exit_work
 syscall_exit_cont:
 #if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
@@ -277,7 +277,8 @@ syscall_dotrace:
         SAVE_NVGPRS(r1)
         li      r0,0xc00
         stw     r0,TRAP(r1)
-        bl      do_syscall_trace
+        addi    r3,r1,STACK_FRAME_OVERHEAD
+        bl      do_syscall_trace_enter
         lwz     r0,GPR0(r1)     /* Restore original registers */
         lwz     r3,GPR3(r1)
         lwz     r4,GPR4(r1)
@@ -291,7 +292,7 @@ syscall_dotrace:
 syscall_exit_work:
         stw     r6,RESULT(r1)   /* Save result */
         stw     r3,GPR3(r1)     /* Update return value */
-        andi.   r0,r9,_TIF_SYSCALL_TRACE
+        andi.   r0,r9,_TIF_SYSCALL_T_OR_A
         beq     5f
         ori     r10,r10,MSR_EE
         SYNC
@@ -303,7 +304,8 @@ syscall_exit_work:
         li      r4,0xc00
         stw     r4,TRAP(r1)
 4:
-        bl      do_syscall_trace
+        addi    r3,r1,STACK_FRAME_OVERHEAD
+        bl      do_syscall_trace_leave
         REST_NVGPRS(r1)
 2:
         lwz     r3,GPR3(r1)
@@ -627,8 +629,8 @@ sigreturn_exit:
         subi    r1,r3,STACK_FRAME_OVERHEAD
         rlwinm  r12,r1,0,0,18   /* current_thread_info() */
         lwz     r9,TI_FLAGS(r12)
-        andi.   r0,r9,_TIF_SYSCALL_TRACE
-        bnel-   do_syscall_trace
+        andi.   r0,r9,_TIF_SYSCALL_T_OR_A
+        bnel-   do_syscall_trace_leave
         /* fall through */
 
         .globl  ret_from_except_full
diff --git a/arch/ppc/kernel/ppc_ksyms.c b/arch/ppc/kernel/ppc_ksyms.c
index 2ccb58fe4fc3..d59ad07de8e7 100644
--- a/arch/ppc/kernel/ppc_ksyms.c
+++ b/arch/ppc/kernel/ppc_ksyms.c
@@ -55,7 +55,6 @@
 #define EXPORT_SYMTAB_STROPS
 
 extern void transfer_to_handler(void);
-extern void do_syscall_trace(void);
 extern void do_IRQ(struct pt_regs *regs);
 extern void MachineCheckException(struct pt_regs *regs);
 extern void AlignmentException(struct pt_regs *regs);
@@ -74,7 +73,6 @@ extern unsigned long mm_ptov (unsigned long paddr);
 EXPORT_SYMBOL(clear_pages);
 EXPORT_SYMBOL(clear_user_page);
 EXPORT_SYMBOL(do_signal);
-EXPORT_SYMBOL(do_syscall_trace);
 EXPORT_SYMBOL(transfer_to_handler);
 EXPORT_SYMBOL(do_IRQ);
 EXPORT_SYMBOL(MachineCheckException);
diff --git a/arch/ppc/kernel/ptrace.c b/arch/ppc/kernel/ptrace.c
index 59d59a8dc249..e7aee4108dea 100644
--- a/arch/ppc/kernel/ptrace.c
+++ b/arch/ppc/kernel/ptrace.c
@@ -27,6 +27,9 @@
 #include <linux/user.h>
 #include <linux/security.h>
 #include <linux/signal.h>
+#include <linux/seccomp.h>
+#include <linux/audit.h>
+#include <linux/module.h>
 
 #include <asm/uaccess.h>
 #include <asm/page.h>
@@ -455,11 +458,10 @@ out:
         return ret;
 }
 
-void do_syscall_trace(void)
+static void do_syscall_trace(void)
 {
-        if (!test_thread_flag(TIF_SYSCALL_TRACE)
-            || !(current->ptrace & PT_PTRACED))
-                return;
+        /* the 0x80 provides a way for the tracing parent to distinguish
+           between a syscall stop and SIGTRAP delivery */
         ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
                                  ? 0x80 : 0));
 
@@ -473,3 +475,33 @@ void do_syscall_trace(void)
                 current->exit_code = 0;
         }
 }
+
+void do_syscall_trace_enter(struct pt_regs *regs)
+{
+        if (test_thread_flag(TIF_SYSCALL_TRACE)
+            && (current->ptrace & PT_PTRACED))
+                do_syscall_trace();
+
+        if (unlikely(current->audit_context))
+                audit_syscall_entry(current, AUDIT_ARCH_PPC,
+                                    regs->gpr[0],
+                                    regs->gpr[3], regs->gpr[4],
+                                    regs->gpr[5], regs->gpr[6]);
+}
+
+void do_syscall_trace_leave(struct pt_regs *regs)
+{
+        secure_computing(regs->gpr[0]);
+
+        if (unlikely(current->audit_context))
+                audit_syscall_exit(current,
+                                   (regs->ccr&0x1000)?AUDITSC_FAILURE:AUDITSC_SUCCESS,
+                                   regs->result);
+
+        if ((test_thread_flag(TIF_SYSCALL_TRACE))
+            && (current->ptrace & PT_PTRACED))
+                do_syscall_trace();
+}
+
+EXPORT_SYMBOL(do_syscall_trace_enter);
+EXPORT_SYMBOL(do_syscall_trace_leave);
diff --git a/include/asm-ppc/seccomp.h b/include/asm-ppc/seccomp.h
new file mode 100644
index 000000000000..666c4da96d87
--- /dev/null
+++ b/include/asm-ppc/seccomp.h
@@ -0,0 +1,10 @@
+#ifndef _ASM_SECCOMP_H
+
+#include <linux/unistd.h>
+
+#define __NR_seccomp_read __NR_read
+#define __NR_seccomp_write __NR_write
+#define __NR_seccomp_exit __NR_exit
+#define __NR_seccomp_sigreturn __NR_rt_sigreturn
+
+#endif /* _ASM_SECCOMP_H */
diff --git a/include/asm-ppc/thread_info.h b/include/asm-ppc/thread_info.h
index f7f01524e8a8..e3b5284a6f91 100644
--- a/include/asm-ppc/thread_info.h
+++ b/include/asm-ppc/thread_info.h
@@ -77,12 +77,19 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_POLLING_NRFLAG      4       /* true if poll_idle() is polling
                                            TIF_NEED_RESCHED */
 #define TIF_MEMDIE              5
+#define TIF_SYSCALL_AUDIT       6       /* syscall auditing active */
+#define TIF_SECCOMP             7      /* secure computing */
+
 /* as above, but as bit values */
 #define _TIF_SYSCALL_TRACE      (1<<TIF_SYSCALL_TRACE)
 #define _TIF_NOTIFY_RESUME      (1<<TIF_NOTIFY_RESUME)
 #define _TIF_SIGPENDING         (1<<TIF_SIGPENDING)
 #define _TIF_NEED_RESCHED       (1<<TIF_NEED_RESCHED)
 #define _TIF_POLLING_NRFLAG     (1<<TIF_POLLING_NRFLAG)
+#define _TIF_SYSCALL_AUDIT      (1<<TIF_SYSCALL_AUDIT)
+#define _TIF_SECCOMP            (1<<TIF_SECCOMP)
+
+#define _TIF_SYSCALL_T_OR_A     (_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP)
 
 /*
  * Non racy (local) flags bit numbers
diff --git a/include/linux/audit.h b/include/linux/audit.h
index 19f04b049798..bf2ad3ba72eb 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -27,15 +27,52 @@
 #include <linux/sched.h>
 #include <linux/elf.h>
 
-/* Request and reply types */
-#define AUDIT_GET      1000     /* Get status */
-#define AUDIT_SET      1001     /* Set status (enable/disable/auditd) */
-#define AUDIT_LIST     1002     /* List filtering rules */
-#define AUDIT_ADD      1003     /* Add filtering rule */
-#define AUDIT_DEL      1004     /* Delete filtering rule */
-#define AUDIT_USER     1005     /* Send a message from user-space */
-#define AUDIT_LOGIN    1006     /* Define the login id and informaiton */
-#define AUDIT_KERNEL   2000     /* Asynchronous audit record. NOT A REQUEST. */
+/* The netlink messages for the audit system is divided into blocks:
+ * 1000 - 1099 are for commanding the audit system
+ * 1100 - 1199 user space trusted application messages
+ * 1200 - 1299 messages internal to the audit daemon
+ * 1300 - 1399 audit event messages
+ * 1400 - 1499 SE Linux use
+ * 1500 - 1999 future use
+ * 2000 is for otherwise unclassified kernel audit messages
+ *
+ * Messages from 1000-1199 are bi-directional. 1200-1299 are exclusively user
+ * space. Anything over that is kernel --> user space communication.
+ */
+#define AUDIT_GET               1000    /* Get status */
+#define AUDIT_SET               1001    /* Set status (enable/disable/auditd) */
+#define AUDIT_LIST              1002    /* List syscall filtering rules */
+#define AUDIT_ADD               1003    /* Add syscall filtering rule */
+#define AUDIT_DEL               1004    /* Delete syscall filtering rule */
+#define AUDIT_USER              1005    /* Message from userspace -- deprecated */
+#define AUDIT_LOGIN             1006    /* Define the login id and information */
+#define AUDIT_WATCH_INS         1007    /* Insert file/dir watch entry */
+#define AUDIT_WATCH_REM         1008    /* Remove file/dir watch entry */
+#define AUDIT_WATCH_LIST        1009    /* List all file/dir watches */
+#define AUDIT_SIGNAL_INFO       1010    /* Get info about sender of signal to auditd */
+
+#define AUDIT_FIRST_USER_MSG    1100    /* Userspace messages uninteresting to kernel */
+#define AUDIT_LAST_USER_MSG     1199
+ 
+#define AUDIT_DAEMON_START      1200    /* Daemon startup record */
+#define AUDIT_DAEMON_END        1201    /* Daemon normal stop record */
+#define AUDIT_DAEMON_ABORT      1202    /* Daemon error stop record */
+#define AUDIT_DAEMON_CONFIG     1203    /* Daemon config change */
+
+#define AUDIT_SYSCALL           1300    /* Syscall event */
+#define AUDIT_FS_WATCH          1301    /* Filesystem watch event */
+#define AUDIT_PATH              1302    /* Filename path information */
+#define AUDIT_IPC               1303    /* IPC record */
+#define AUDIT_SOCKETCALL        1304    /* sys_socketcall arguments */
+#define AUDIT_CONFIG_CHANGE     1305    /* Audit system configuration change */
+#define AUDIT_SOCKADDR          1306    /* sockaddr copied as syscall arg */
+#define AUDIT_CWD               1307    /* Current working directory */
+
+#define AUDIT_AVC               1400    /* SE Linux avc denial or grant */
+#define AUDIT_SELINUX_ERR       1401    /* Internal SE Linux Errors */
+#define AUDIT_AVC_PATH          1402    /* dentry, vfsmount pair from avc */
+
+#define AUDIT_KERNEL            2000    /* Asynchronous audit record. NOT A REQUEST. */
 
 /* Rule flags */
 #define AUDIT_PER_TASK 0x01     /* Apply rule at task creation (not syscall) */
@@ -132,16 +169,9 @@
 #define AUDIT_ARCH_V850         (EM_V850|__AUDIT_ARCH_LE)
 #define AUDIT_ARCH_X86_64       (EM_X86_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
 
-#ifndef __KERNEL__
-struct audit_message {
-        struct nlmsghdr nlh;
-        char            data[1200];
-};
-#endif
-
 struct audit_status {
         __u32           mask;           /* Bit mask for valid entries */
-        __u32           enabled;        /* 1 = enabled, 0 = disbaled */
+        __u32           enabled;        /* 1 = enabled, 0 = disabled */
         __u32           failure;        /* Failure-to-log action */
         __u32           pid;            /* pid of auditd process */
         __u32           rate_limit;     /* messages rate limit (per second) */
@@ -161,6 +191,11 @@ struct audit_rule {		/* for AUDIT_LIST, AUDIT_ADD, and AUDIT_DEL */
 
 #ifdef __KERNEL__
 
+struct audit_sig_info {
+        uid_t           uid;
+        pid_t           pid;
+};
+
 struct audit_buffer;
 struct audit_context;
 struct inode;
@@ -185,11 +220,16 @@ extern void audit_inode(const char *name, const struct inode *inode);
                                 /* Private API (for audit.c only) */
 extern int  audit_receive_filter(int type, int pid, int uid, int seq,
                                  void *data, uid_t loginuid);
-extern void audit_get_stamp(struct audit_context *ctx,
-                            struct timespec *t, unsigned int *serial);
+extern unsigned int audit_serial(void);
+extern void auditsc_get_stamp(struct audit_context *ctx,
+                              struct timespec *t, unsigned int *serial);
 extern int  audit_set_loginuid(struct task_struct *task, uid_t loginuid);
 extern uid_t audit_get_loginuid(struct audit_context *ctx);
 extern int audit_ipc_perms(unsigned long qbytes, uid_t uid, gid_t gid, mode_t mode);
+extern int audit_socketcall(int nargs, unsigned long *args);
+extern int audit_sockaddr(int len, void *addr);
+extern int audit_avc_path(struct dentry *dentry, struct vfsmount *mnt);
+extern void audit_signal_info(int sig, struct task_struct *t);
 #else
 #define audit_alloc(t) ({ 0; })
 #define audit_free(t) do { ; } while (0)
@@ -198,18 +238,24 @@ extern int audit_ipc_perms(unsigned long qbytes, uid_t uid, gid_t gid, mode_t mo
 #define audit_getname(n) do { ; } while (0)
 #define audit_putname(n) do { ; } while (0)
 #define audit_inode(n,i) do { ; } while (0)
+#define audit_receive_filter(t,p,u,s,d,l) ({ -EOPNOTSUPP; })
+#define auditsc_get_stamp(c,t,s) do { BUG(); } while (0)
 #define audit_get_loginuid(c) ({ -1; })
 #define audit_ipc_perms(q,u,g,m) ({ 0; })
+#define audit_socketcall(n,a) ({ 0; })
+#define audit_sockaddr(len, addr) ({ 0; })
+#define audit_avc_path(dentry, mnt) ({ 0; })
+#define audit_signal_info(s,t) do { ; } while (0)
 #endif
 
 #ifdef CONFIG_AUDIT
 /* These are defined in audit.c */
                                 /* Public API */
-extern void                 audit_log(struct audit_context *ctx,
+extern void                 audit_log(struct audit_context *ctx, int type,
                                       const char *fmt, ...)
-                            __attribute__((format(printf,2,3)));
+                            __attribute__((format(printf,3,4)));
 
-extern struct audit_buffer *audit_log_start(struct audit_context *ctx);
+extern struct audit_buffer *audit_log_start(struct audit_context *ctx,int type);
 extern void                 audit_log_format(struct audit_buffer *ab,
                                              const char *fmt, ...)
                             __attribute__((format(printf,2,3)));
@@ -229,8 +275,8 @@ extern void		    audit_send_reply(int pid, int seq, int type,
                                              void *payload, int size);
 extern void                 audit_log_lost(const char *message);
 #else
-#define audit_log(t,f,...) do { ; } while (0)
-#define audit_log_start(t) ({ NULL; })
+#define audit_log(c,t,f,...) do { ; } while (0)
+#define audit_log_start(c,t) ({ NULL; })
 #define audit_log_vformat(b,f,a) do { ; } while (0)
 #define audit_log_format(b,f,...) do { ; } while (0)
 #define audit_log_end(b) do { ; } while (0)
diff --git a/init/Kconfig b/init/Kconfig
index a7660ccc693f..b1091d7542ce 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -164,6 +164,7 @@ config SYSCTL
 
 config AUDIT
         bool "Auditing support"
+        depends on NET
         default y if SECURITY_SELINUX
         help
           Enable auditing infrastructure that can be used with another
@@ -173,7 +174,7 @@ config AUDIT
 
 config AUDITSYSCALL
         bool "Enable system-call auditing support"
-        depends on AUDIT && (X86 || PPC64 || ARCH_S390 || IA64 || UML)
+        depends on AUDIT && (X86 || PPC || PPC64 || ARCH_S390 || IA64 || UML)
         default y if SECURITY_SELINUX
         help
           Enable low-overhead system-call auditing infrastructure that
diff --git a/kernel/audit.c b/kernel/audit.c
index 9c4f1af0c794..ef35166fdc29 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -46,6 +46,8 @@
 #include <asm/types.h>
 #include <linux/mm.h>
 #include <linux/module.h>
+#include <linux/err.h>
+#include <linux/kthread.h>
 
 #include <linux/audit.h>
 
@@ -68,7 +70,7 @@ static int	audit_failure = AUDIT_FAIL_PRINTK;
 
 /* If audit records are to be written to the netlink socket, audit_pid
  * contains the (non-zero) pid. */
-static int      audit_pid;
+int             audit_pid;
 
 /* If audit_limit is non-zero, limit the rate of sending audit records
  * to that number per second.  This prevents DoS attacks, but results in
@@ -77,7 +79,10 @@ static int	audit_rate_limit;
 
 /* Number of outstanding audit_buffers allowed. */
 static int      audit_backlog_limit = 64;
-static atomic_t audit_backlog       = ATOMIC_INIT(0);
+
+/* The identity of the user shutting down the audit system. */
+uid_t           audit_sig_uid = -1;
+pid_t           audit_sig_pid = -1;
 
 /* Records can be lost in several ways:
    0) [suppressed in audit_alloc]
@@ -91,19 +96,17 @@ static atomic_t    audit_lost = ATOMIC_INIT(0);
 /* The netlink socket. */
 static struct sock *audit_sock;
 
-/* There are two lists of audit buffers.  The txlist contains audit
- * buffers that cannot be sent immediately to the netlink device because
- * we are in an irq context (these are sent later in a tasklet).
- *
- * The second list is a list of pre-allocated audit buffers (if more
+/* The audit_freelist is a list of pre-allocated audit buffers (if more
  * than AUDIT_MAXFREE are in use, the audit buffer is freed instead of
  * being placed on the freelist). */
-static DEFINE_SPINLOCK(audit_txlist_lock);
 static DEFINE_SPINLOCK(audit_freelist_lock);
 static int         audit_freelist_count = 0;
-static LIST_HEAD(audit_txlist);
 static LIST_HEAD(audit_freelist);
 
+static struct sk_buff_head audit_skb_queue;
+static struct task_struct *kauditd_task;
+static DECLARE_WAIT_QUEUE_HEAD(kauditd_wait);
+
 /* There are three lists of rules -- one to search at task creation
  * time, one to search at syscall entry time, and another to search at
  * syscall exit time. */
@@ -112,7 +115,7 @@ static LIST_HEAD(audit_entlist);
 static LIST_HEAD(audit_extlist);
 
 /* The netlink socket is only to be read by 1 CPU, which lets us assume
- * that list additions and deletions never happen simultaneiously in
+ * that list additions and deletions never happen simultaneously in
  * auditsc.c */
 static DECLARE_MUTEX(audit_netlink_sem);
 
@@ -132,21 +135,14 @@ static DECLARE_MUTEX(audit_netlink_sem);
  * use simultaneously. */
 struct audit_buffer {
         struct list_head     list;
-        struct sk_buff_head  sklist;    /* formatted skbs ready to send */
+        struct sk_buff       *skb;      /* formatted skb ready to send */
         struct audit_context *ctx;      /* NULL or associated context */
-        int                  len;       /* used area of tmp */
-        char                 tmp[AUDIT_BUFSIZ];
-
-                                /* Pointer to header and contents */
-        struct nlmsghdr      *nlh;
-        int                  total;
-        int                  type;
-        int                  pid;
 };
 
-void audit_set_type(struct audit_buffer *ab, int type)
+static void audit_set_pid(struct audit_buffer *ab, pid_t pid)
 {
-        ab->type = type;
+        struct nlmsghdr *nlh = (struct nlmsghdr *)ab->skb->data;
+        nlh->nlmsg_pid = pid;
 }
 
 struct audit_entry {
@@ -154,9 +150,6 @@ struct audit_entry {
         struct audit_rule rule;
 };
 
-static void audit_log_end_irq(struct audit_buffer *ab);
-static void audit_log_end_fast(struct audit_buffer *ab);
-
 static void audit_panic(const char *message)
 {
         switch (audit_failure)
@@ -227,10 +220,8 @@ void audit_log_lost(const char *message)
 
         if (print) {
                 printk(KERN_WARNING
-                       "audit: audit_lost=%d audit_backlog=%d"
-                       " audit_rate_limit=%d audit_backlog_limit=%d\n",
+                       "audit: audit_lost=%d audit_rate_limit=%d audit_backlog_limit=%d\n",
                        atomic_read(&audit_lost),
-                       atomic_read(&audit_backlog),
                        audit_rate_limit,
                        audit_backlog_limit);
                 audit_panic(message);
@@ -242,7 +233,8 @@ static int audit_set_rate_limit(int limit, uid_t loginuid)
 {
         int old          = audit_rate_limit;
         audit_rate_limit = limit;
-        audit_log(NULL, "audit_rate_limit=%d old=%d by auid %u",
+        audit_log(NULL, AUDIT_CONFIG_CHANGE, 
+                        "audit_rate_limit=%d old=%d by auid=%u",
                         audit_rate_limit, old, loginuid);
         return old;
 }
@@ -251,7 +243,8 @@ static int audit_set_backlog_limit(int limit, uid_t loginuid)
 {
         int old          = audit_backlog_limit;
         audit_backlog_limit = limit;
-        audit_log(NULL, "audit_backlog_limit=%d old=%d by auid %u",
+        audit_log(NULL, AUDIT_CONFIG_CHANGE,
+                        "audit_backlog_limit=%d old=%d by auid=%u",
                         audit_backlog_limit, old, loginuid);
         return old;
 }
@@ -262,8 +255,9 @@ static int audit_set_enabled(int state, uid_t loginuid)
         if (state != 0 && state != 1)
                 return -EINVAL;
         audit_enabled = state;
-        audit_log(NULL, "audit_enabled=%d old=%d by auid %u",
-                  audit_enabled, old, loginuid);
+        audit_log(NULL, AUDIT_CONFIG_CHANGE,
+                        "audit_enabled=%d old=%d by auid=%u",
+                        audit_enabled, old, loginuid);
         return old;
 }
 
@@ -275,12 +269,44 @@ static int audit_set_failure(int state, uid_t loginuid)
             && state != AUDIT_FAIL_PANIC)
                 return -EINVAL;
         audit_failure = state;
-        audit_log(NULL, "audit_failure=%d old=%d by auid %u",
-                  audit_failure, old, loginuid);
+        audit_log(NULL, AUDIT_CONFIG_CHANGE,
+                        "audit_failure=%d old=%d by auid=%u",
+                        audit_failure, old, loginuid);
         return old;
 }
 
-#ifdef CONFIG_NET
+int kauditd_thread(void *dummy)
+{
+        struct sk_buff *skb;
+
+        while (1) {
+                skb = skb_dequeue(&audit_skb_queue);
+                if (skb) {
+                        if (audit_pid) {
+                                int err = netlink_unicast(audit_sock, skb, audit_pid, 0);
+                                if (err < 0) {
+                                        BUG_ON(err != -ECONNREFUSED); /* Shoudn't happen */
+                                        printk(KERN_ERR "audit: *NO* daemon at audit_pid=%d\n", audit_pid);
+                                        audit_pid = 0;
+                                }
+                        } else {
+                                printk(KERN_ERR "%s\n", skb->data + NLMSG_SPACE(0));
+                                kfree_skb(skb);
+                        }
+                } else {
+                        DECLARE_WAITQUEUE(wait, current);
+                        set_current_state(TASK_INTERRUPTIBLE);
+                        add_wait_queue(&kauditd_wait, &wait);
+
+                        if (!skb_queue_len(&audit_skb_queue))
+                                schedule();
+
+                        __set_current_state(TASK_RUNNING);
+                        remove_wait_queue(&kauditd_wait, &wait);
+                }
+        }
+}
+
 void audit_send_reply(int pid, int seq, int type, int done, int multi,
                       void *payload, int size)
 {
@@ -293,13 +319,16 @@ void audit_send_reply(int pid, int seq, int type, int done, int multi,
 
         skb = alloc_skb(len, GFP_KERNEL);
         if (!skb)
-                goto nlmsg_failure;
+                return;
 
-        nlh              = NLMSG_PUT(skb, pid, seq, t, len - sizeof(*nlh));
+        nlh              = NLMSG_PUT(skb, pid, seq, t, size);
         nlh->nlmsg_flags = flags;
         data             = NLMSG_DATA(nlh);
         memcpy(data, payload, size);
-        netlink_unicast(audit_sock, skb, pid, MSG_DONTWAIT);
+
+        /* Ignore failure. It'll only happen if the sender goes away,
+           because our timeout is set to infinite. */
+        netlink_unicast(audit_sock, skb, pid, 0);
         return;
 
 nlmsg_failure:                  /* Used by NLMSG_PUT */
@@ -321,10 +350,12 @@ static int audit_netlink_ok(kernel_cap_t eff_cap, u16 msg_type)
         case AUDIT_SET:
         case AUDIT_ADD:
         case AUDIT_DEL:
+        case AUDIT_SIGNAL_INFO:
                 if (!cap_raised(eff_cap, CAP_AUDIT_CONTROL))
                         err = -EPERM;
                 break;
         case AUDIT_USER:
+        case AUDIT_FIRST_USER_MSG...AUDIT_LAST_USER_MSG:
                 if (!cap_raised(eff_cap, CAP_AUDIT_WRITE))
                         err = -EPERM;
                 break;
@@ -344,11 +375,21 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
         struct audit_buffer     *ab;
         u16                     msg_type = nlh->nlmsg_type;
         uid_t                   loginuid; /* loginuid of sender */
+        struct audit_sig_info   sig_data;
 
         err = audit_netlink_ok(NETLINK_CB(skb).eff_cap, msg_type);
         if (err)
                 return err;
 
+        /* As soon as there's any sign of userspace auditd, start kauditd to talk to it */
+        if (!kauditd_task)
+                kauditd_task = kthread_run(kauditd_thread, NULL, "kauditd");
+        if (IS_ERR(kauditd_task)) {
+                err = PTR_ERR(kauditd_task);
+                kauditd_task = NULL;
+                return err;
+        }
+
         pid  = NETLINK_CREDS(skb)->pid;
         uid  = NETLINK_CREDS(skb)->uid;
         loginuid = NETLINK_CB(skb).loginuid;
@@ -363,7 +404,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                 status_set.rate_limit    = audit_rate_limit;
                 status_set.backlog_limit = audit_backlog_limit;
                 status_set.lost          = atomic_read(&audit_lost);
-                status_set.backlog       = atomic_read(&audit_backlog);
+                status_set.backlog       = skb_queue_len(&audit_skb_queue);
                 audit_send_reply(NETLINK_CB(skb).pid, seq, AUDIT_GET, 0, 0,
                                  &status_set, sizeof(status_set));
                 break;
@@ -382,7 +423,8 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                 if (status_get->mask & AUDIT_STATUS_PID) {
                         int old   = audit_pid;
                         audit_pid = status_get->pid;
-                        audit_log(NULL, "audit_pid=%d old=%d by auid %u",
+                        audit_log(NULL, AUDIT_CONFIG_CHANGE,
+                                "audit_pid=%d old=%d by auid=%u",
                                   audit_pid, old, loginuid);
                 }
                 if (status_get->mask & AUDIT_STATUS_RATE_LIMIT)
@@ -392,18 +434,15 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                                                         loginuid);
                 break;
         case AUDIT_USER:
-                ab = audit_log_start(NULL);
+        case AUDIT_FIRST_USER_MSG...AUDIT_LAST_USER_MSG:
+                ab = audit_log_start(NULL, msg_type);
                 if (!ab)
                         break;  /* audit_panic has been called */
                 audit_log_format(ab,
-                                 "user pid=%d uid=%d length=%d loginuid=%u"
+                                 "user pid=%d uid=%u auid=%u"
                                  " msg='%.1024s'",
-                                 pid, uid,
-                                 (int)(nlh->nlmsg_len
-                                       - ((char *)data - (char *)nlh)),
-                                 loginuid, (char *)data);
-                ab->type = AUDIT_USER;
-                ab->pid  = pid;
+                                 pid, uid, loginuid, (char *)data);
+                audit_set_pid(ab, pid);
                 audit_log_end(ab);
                 break;
         case AUDIT_ADD:
@@ -412,12 +451,14 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                         return -EINVAL;
                 /* fallthrough */
         case AUDIT_LIST:
-#ifdef CONFIG_AUDITSYSCALL
                 err = audit_receive_filter(nlh->nlmsg_type, NETLINK_CB(skb).pid,
                                            uid, seq, data, loginuid);
-#else
-                err = -EOPNOTSUPP;
-#endif
+                break;
+        case AUDIT_SIGNAL_INFO:
+                sig_data.uid = audit_sig_uid;
+                sig_data.pid = audit_sig_pid;
+                audit_send_reply(NETLINK_CB(skb).pid, seq, AUDIT_SIGNAL_INFO, 
+                                0, 0, &sig_data, sizeof(sig_data));
                 break;
         default:
                 err = -EINVAL;
@@ -467,87 +508,6 @@ static void audit_receive(struct sock *sk, int length)
         up(&audit_netlink_sem);
 }
 
-/* Move data from tmp buffer into an skb.  This is an extra copy, and
- * that is unfortunate.  However, the copy will only occur when a record
- * is being written to user space, which is already a high-overhead
- * operation.  (Elimination of the copy is possible, for example, by
- * writing directly into a pre-allocated skb, at the cost of wasting
- * memory. */
-static void audit_log_move(struct audit_buffer *ab)
-{
-        struct sk_buff  *skb;
-        char            *start;
-        int             extra = ab->nlh ? 0 : NLMSG_SPACE(0);
-
-        /* possible resubmission */
-        if (ab->len == 0)
-                return;
-
-        skb = skb_peek_tail(&ab->sklist);
-        if (!skb || skb_tailroom(skb) <= ab->len + extra) {
-                skb = alloc_skb(2 * ab->len + extra, GFP_ATOMIC);
-                if (!skb) {
-                        ab->len = 0; /* Lose information in ab->tmp */
-                        audit_log_lost("out of memory in audit_log_move");
-                        return;
-                }
-                __skb_queue_tail(&ab->sklist, skb);
-                if (!ab->nlh)
-                        ab->nlh = (struct nlmsghdr *)skb_put(skb,
-                                                             NLMSG_SPACE(0));
-        }
-        start = skb_put(skb, ab->len);
-        memcpy(start, ab->tmp, ab->len);
-        ab->len = 0;
-}
-
-/* Iterate over the skbuff in the audit_buffer, sending their contents
- * to user space. */
-static inline int audit_log_drain(struct audit_buffer *ab)
-{
-        struct sk_buff *skb;
-
-        while ((skb = skb_dequeue(&ab->sklist))) {
-                int retval = 0;
-
-                if (audit_pid) {
-                        if (ab->nlh) {
-                                ab->nlh->nlmsg_len   = ab->total;
-                                ab->nlh->nlmsg_type  = ab->type;
-                                ab->nlh->nlmsg_flags = 0;
-                                ab->nlh->nlmsg_seq   = 0;
-                                ab->nlh->nlmsg_pid   = ab->pid;
-                        }
-                        skb_get(skb); /* because netlink_* frees */
-                        retval = netlink_unicast(audit_sock, skb, audit_pid,
-                                                 MSG_DONTWAIT);
-                }
-                if (retval == -EAGAIN &&
-                    (atomic_read(&audit_backlog)) < audit_backlog_limit) {
-                        skb_queue_head(&ab->sklist, skb);
-                        audit_log_end_irq(ab);
-                        return 1;
-                }
-                if (retval < 0) {
-                        if (retval == -ECONNREFUSED) {
-                                printk(KERN_ERR
-                                       "audit: *NO* daemon at audit_pid=%d\n",
-                                       audit_pid);
-                                audit_pid = 0;
-                        } else
-                                audit_log_lost("netlink socket too busy");
-                }
-                if (!audit_pid) { /* No daemon */
-                        int offset = ab->nlh ? NLMSG_SPACE(0) : 0;
-                        int len    = skb->len - offset;
-                        skb->data[offset + len] = '\0';
-                        printk(KERN_ERR "%s\n", skb->data + offset);
-                }
-                kfree_skb(skb);
-                ab->nlh = NULL;
-        }
-        return 0;
-}
 
 /* Initialize audit support at boot time. */
 static int __init audit_init(void)
@@ -558,40 +518,13 @@ static int __init audit_init(void)
         if (!audit_sock)
                 audit_panic("cannot initialize netlink socket");
 
+        audit_sock->sk_sndtimeo = MAX_SCHEDULE_TIMEOUT;
+        skb_queue_head_init(&audit_skb_queue);
         audit_initialized = 1;
         audit_enabled = audit_default;
-        audit_log(NULL, "initialized");
-        return 0;
-}
-
-#else
-/* Without CONFIG_NET, we have no skbuffs.  For now, print what we have
- * in the buffer. */
-static void audit_log_move(struct audit_buffer *ab)
-{
-        printk(KERN_ERR "%*.*s\n", ab->len, ab->len, ab->tmp);
-        ab->len = 0;
-}
-
-static inline int audit_log_drain(struct audit_buffer *ab)
-{
-        return 0;
-}
-
-/* Initialize audit support at boot time. */
-int __init audit_init(void)
-{
-        printk(KERN_INFO "audit: initializing WITHOUT netlink support\n");
-        audit_sock = NULL;
-        audit_pid  = 0;
-
-        audit_initialized = 1;
-        audit_enabled = audit_default;
-        audit_log(NULL, "initialized");
+        audit_log(NULL, AUDIT_KERNEL, "initialized");
         return 0;
 }
-#endif
-
 __initcall(audit_init);
 
 /* Process kernel command-line parameter at boot time.  audit=0 or audit=1. */
@@ -608,6 +541,102 @@ static int __init audit_enable(char *str)
 
 __setup("audit=", audit_enable);
 
+static void audit_buffer_free(struct audit_buffer *ab)
+{
+        unsigned long flags;
+
+        if (!ab)
+                return;
+
+        if (ab->skb)
+                kfree_skb(ab->skb);
+
+        spin_lock_irqsave(&audit_freelist_lock, flags);
+        if (++audit_freelist_count > AUDIT_MAXFREE)
+                kfree(ab);
+        else
+                list_add(&ab->list, &audit_freelist);
+        spin_unlock_irqrestore(&audit_freelist_lock, flags);
+}
+
+static struct audit_buffer * audit_buffer_alloc(struct audit_context *ctx,
+                                                int gfp_mask, int type)
+{
+        unsigned long flags;
+        struct audit_buffer *ab = NULL;
+        struct nlmsghdr *nlh;
+
+        spin_lock_irqsave(&audit_freelist_lock, flags);
+        if (!list_empty(&audit_freelist)) {
+                ab = list_entry(audit_freelist.next,
+                                struct audit_buffer, list);
+                list_del(&ab->list);
+                --audit_freelist_count;
+        }
+        spin_unlock_irqrestore(&audit_freelist_lock, flags);
+
+        if (!ab) {
+                ab = kmalloc(sizeof(*ab), gfp_mask);
+                if (!ab)
+                        goto err;
+        }
+
+        ab->skb = alloc_skb(AUDIT_BUFSIZ, gfp_mask);
+        if (!ab->skb)
+                goto err;
+
+        ab->ctx = ctx;
+        nlh = (struct nlmsghdr *)skb_put(ab->skb, NLMSG_SPACE(0));
+        nlh->nlmsg_type = type;
+        nlh->nlmsg_flags = 0;
+        nlh->nlmsg_pid = 0;
+        nlh->nlmsg_seq = 0;
+        return ab;
+err:
+        audit_buffer_free(ab);
+        return NULL;
+}
+
+/* Compute a serial number for the audit record.  Audit records are
+ * written to user-space as soon as they are generated, so a complete
+ * audit record may be written in several pieces.  The timestamp of the
+ * record and this serial number are used by the user-space tools to
+ * determine which pieces belong to the same audit record.  The
+ * (timestamp,serial) tuple is unique for each syscall and is live from
+ * syscall entry to syscall exit.
+ *
+ * Atomic values are only guaranteed to be 24-bit, so we count down.
+ *
+ * NOTE: Another possibility is to store the formatted records off the
+ * audit context (for those records that have a context), and emit them
+ * all at syscall exit.  However, this could delay the reporting of
+ * significant errors until syscall exit (or never, if the system
+ * halts). */
+unsigned int audit_serial(void)
+{
+        static atomic_t serial = ATOMIC_INIT(0xffffff);
+        unsigned int a, b;
+
+        do {
+                a = atomic_read(&serial);
+                if (atomic_dec_and_test(&serial))
+                        atomic_set(&serial, 0xffffff);
+                b = atomic_read(&serial);
+        } while (b != a - 1);
+
+        return 0xffffff - b;
+}
+
+static inline void audit_get_stamp(struct audit_context *ctx, 
+                                   struct timespec *t, unsigned int *serial)
+{
+        if (ctx)
+                auditsc_get_stamp(ctx, t, serial);
+        else {
+                *t = CURRENT_TIME;
+                *serial = audit_serial();
+        }
+}
 
 /* Obtain an audit buffer.  This routine does locking to obtain the
  * audit buffer, but then no locking is required for calls to
@@ -615,10 +644,9 @@ __setup("audit=", audit_enable);
  * syscall, then the syscall is marked as auditable and an audit record
  * will be written at syscall exit.  If there is no associated task, tsk
  * should be NULL. */
-struct audit_buffer *audit_log_start(struct audit_context *ctx)
+struct audit_buffer *audit_log_start(struct audit_context *ctx, int type)
 {
         struct audit_buffer     *ab     = NULL;
-        unsigned long           flags;
         struct timespec         t;
         unsigned int            serial;
 
@@ -626,57 +654,48 @@ struct audit_buffer *audit_log_start(struct audit_context *ctx)
                 return NULL;
 
         if (audit_backlog_limit
-            && atomic_read(&audit_backlog) > audit_backlog_limit) {
+            && skb_queue_len(&audit_skb_queue) > audit_backlog_limit) {
                 if (audit_rate_check())
                         printk(KERN_WARNING
                                "audit: audit_backlog=%d > "
                                "audit_backlog_limit=%d\n",
-                               atomic_read(&audit_backlog),
+                               skb_queue_len(&audit_skb_queue),
                                audit_backlog_limit);
                 audit_log_lost("backlog limit exceeded");
                 return NULL;
         }
 
-        spin_lock_irqsave(&audit_freelist_lock, flags);
-        if (!list_empty(&audit_freelist)) {
-                ab = list_entry(audit_freelist.next,
-                                struct audit_buffer, list);
-                list_del(&ab->list);
-                --audit_freelist_count;
-        }
-        spin_unlock_irqrestore(&audit_freelist_lock, flags);
-
-        if (!ab)
-                ab = kmalloc(sizeof(*ab), GFP_ATOMIC);
+        ab = audit_buffer_alloc(ctx, GFP_ATOMIC, type);
         if (!ab) {
                 audit_log_lost("out of memory in audit_log_start");
                 return NULL;
         }
 
-        atomic_inc(&audit_backlog);
-        skb_queue_head_init(&ab->sklist);
-
-        ab->ctx   = ctx;
-        ab->len   = 0;
-        ab->nlh   = NULL;
-        ab->total = 0;
-        ab->type  = AUDIT_KERNEL;
-        ab->pid   = 0;
+        audit_get_stamp(ab->ctx, &t, &serial);
 
-#ifdef CONFIG_AUDITSYSCALL
-        if (ab->ctx)
-                audit_get_stamp(ab->ctx, &t, &serial);
-        else
-#endif
-        {
-                t = CURRENT_TIME;
-                serial = 0;
-        }
         audit_log_format(ab, "audit(%lu.%03lu:%u): ",
                          t.tv_sec, t.tv_nsec/1000000, serial);
         return ab;
 }
 
+/**
+ * audit_expand - expand skb in the audit buffer
+ * @ab: audit_buffer
+ *
+ * Returns 0 (no space) on failed expansion, or available space if
+ * successful.
+ */
+static inline int audit_expand(struct audit_buffer *ab, int extra)
+{
+        struct sk_buff *skb = ab->skb;
+        int ret = pskb_expand_head(skb, skb_headroom(skb), extra,
+                                   GFP_ATOMIC);
+        if (ret < 0) {
+                audit_log_lost("out of memory in audit_expand");
+                return 0;
+        }
+        return skb_tailroom(skb);
+}
 
 /* Format an audit message into the audit buffer.  If there isn't enough
  * room in the audit buffer, more room will be allocated and vsnprint
@@ -686,26 +705,35 @@ static void audit_log_vformat(struct audit_buffer *ab, const char *fmt,
                               va_list args)
 {
         int len, avail;
+        struct sk_buff *skb;
+        va_list args2;
 
         if (!ab)
                 return;
 
-        avail = sizeof(ab->tmp) - ab->len;
-        if (avail <= 0) {
-                audit_log_move(ab);
-                avail = sizeof(ab->tmp) - ab->len;
+        BUG_ON(!ab->skb);
+        skb = ab->skb;
+        avail = skb_tailroom(skb);
+        if (avail == 0) {
+                avail = audit_expand(ab, AUDIT_BUFSIZ);
+                if (!avail)
+                        goto out;
         }
-        len   = vsnprintf(ab->tmp + ab->len, avail, fmt, args);
+        va_copy(args2, args);
+        len = vsnprintf(skb->tail, avail, fmt, args);
         if (len >= avail) {
                 /* The printk buffer is 1024 bytes long, so if we get
                  * here and AUDIT_BUFSIZ is at least 1024, then we can
                  * log everything that printk could have logged. */
-                audit_log_move(ab);
-                avail = sizeof(ab->tmp) - ab->len;
-                len   = vsnprintf(ab->tmp + ab->len, avail, fmt, args);
+                avail = audit_expand(ab, max_t(unsigned, AUDIT_BUFSIZ, 1+len-avail));
+                if (!avail)
+                        goto out;
+                len = vsnprintf(skb->tail, avail, fmt, args2);
         }
-        ab->len   += (len < avail) ? len : avail;
-        ab->total += (len < avail) ? len : avail;
+        if (len > 0)
+                skb_put(skb, len);
+out:
+        return;
 }
 
 /* Format a message into the audit buffer.  All the work is done in
@@ -721,20 +749,47 @@ void audit_log_format(struct audit_buffer *ab, const char *fmt, ...)
         va_end(args);
 }
 
-void audit_log_hex(struct audit_buffer *ab, const unsigned char *buf, size_t len)
+/* This function will take the passed buf and convert it into a string of
+ * ascii hex digits. The new string is placed onto the skb. */
+void audit_log_hex(struct audit_buffer *ab, const unsigned char *buf, 
+                size_t len)
 {
-        int i;
+        int i, avail, new_len;
+        unsigned char *ptr;
+        struct sk_buff *skb;
+        static const unsigned char *hex = "0123456789ABCDEF";
+
+        BUG_ON(!ab->skb);
+        skb = ab->skb;
+        avail = skb_tailroom(skb);
+        new_len = len<<1;
+        if (new_len >= avail) {
+                /* Round the buffer request up to the next multiple */
+                new_len = AUDIT_BUFSIZ*(((new_len-avail)/AUDIT_BUFSIZ) + 1);
+                avail = audit_expand(ab, new_len);
+                if (!avail)
+                        return;
+        }
 
-        for (i=0; i<len; i++)
-                audit_log_format(ab, "%02x", buf[i]);
+        ptr = skb->tail;
+        for (i=0; i<len; i++) {
+                *ptr++ = hex[(buf[i] & 0xF0)>>4]; /* Upper nibble */
+                *ptr++ = hex[buf[i] & 0x0F];      /* Lower nibble */
+        }
+        *ptr = 0;
+        skb_put(skb, len << 1); /* new string is twice the old string */
 }
 
+/* This code will escape a string that is passed to it if the string
+ * contains a control character, unprintable character, double quote mark, 
+ * or a space. Unescaped strings will start and end with a double quote mark.
+ * Strings that are escaped are printed in hex (2 digits per char). */
 void audit_log_untrustedstring(struct audit_buffer *ab, const char *string)
 {
         const unsigned char *p = string;
 
         while (*p) {
-                if (*p == '"' || *p == ' ' || *p < 0x20 || *p > 0x7f) {
+                if (*p == '"' || *p < 0x21 || *p > 0x7f) {
                         audit_log_hex(ab, string, strlen(string));
                         return;
                 }
@@ -743,117 +798,63 @@ void audit_log_untrustedstring(struct audit_buffer *ab, const char *string)
         audit_log_format(ab, "\"%s\"", string);
 }
 
-
-/* This is a helper-function to print the d_path without using a static
- * buffer or allocating another buffer in addition to the one in
- * audit_buffer. */
+/* This is a helper-function to print the escaped d_path */
 void audit_log_d_path(struct audit_buffer *ab, const char *prefix,
                       struct dentry *dentry, struct vfsmount *vfsmnt)
 {
-        char *p;
-        int  len, avail;
+        char *p, *path;
 
-        if (prefix) audit_log_format(ab, " %s", prefix);
-
-        if (ab->len > 128)
-                audit_log_move(ab);
-        avail = sizeof(ab->tmp) - ab->len;
-        p = d_path(dentry, vfsmnt, ab->tmp + ab->len, avail);
-        if (IS_ERR(p)) {
-                /* FIXME: can we save some information here? */
-                audit_log_format(ab, "<toolong>");
-        } else {
-                                /* path isn't at start of buffer */
-                len        = (ab->tmp + sizeof(ab->tmp) - 1) - p;
-                memmove(ab->tmp + ab->len, p, len);
-                ab->len   += len;
-                ab->total += len;
-        }
-}
-
-/* Remove queued messages from the audit_txlist and send them to userspace. */
-static void audit_tasklet_handler(unsigned long arg)
-{
-        LIST_HEAD(list);
-        struct audit_buffer *ab;
-        unsigned long       flags;
+        if (prefix)
+                audit_log_format(ab, " %s", prefix);
 
-        spin_lock_irqsave(&audit_txlist_lock, flags);
-        list_splice_init(&audit_txlist, &list);
-        spin_unlock_irqrestore(&audit_txlist_lock, flags);
-
-        while (!list_empty(&list)) {
-                ab = list_entry(list.next, struct audit_buffer, list);
-                list_del(&ab->list);
-                audit_log_end_fast(ab);
+        /* We will allow 11 spaces for ' (deleted)' to be appended */
+        path = kmalloc(PATH_MAX+11, GFP_KERNEL);
+        if (!path) {
+                audit_log_format(ab, "<no memory>");
+                return;
         }
+        p = d_path(dentry, vfsmnt, path, PATH_MAX+11);
+        if (IS_ERR(p)) { /* Should never happen since we send PATH_MAX */
+                /* FIXME: can we save some information here? */
+                audit_log_format(ab, "<too long>");
+        } else 
+                audit_log_untrustedstring(ab, p);
+        kfree(path);
 }
 
-static DECLARE_TASKLET(audit_tasklet, audit_tasklet_handler, 0);
-
 /* The netlink_* functions cannot be called inside an irq context, so
  * the audit buffer is places on a queue and a tasklet is scheduled to
  * remove them from the queue outside the irq context.  May be called in
  * any context. */
-static void audit_log_end_irq(struct audit_buffer *ab)
-{
-        unsigned long flags;
-
-        if (!ab)
-                return;
-        spin_lock_irqsave(&audit_txlist_lock, flags);
-        list_add_tail(&ab->list, &audit_txlist);
-        spin_unlock_irqrestore(&audit_txlist_lock, flags);
-
-        tasklet_schedule(&audit_tasklet);
-}
-
-/* Send the message in the audit buffer directly to user space.  May not
- * be called in an irq context. */
-static void audit_log_end_fast(struct audit_buffer *ab)
+void audit_log_end(struct audit_buffer *ab)
 {
-        unsigned long flags;
-
-        BUG_ON(in_irq());
         if (!ab)
                 return;
         if (!audit_rate_check()) {
                 audit_log_lost("rate limit exceeded");
         } else {
-                audit_log_move(ab);
-                if (audit_log_drain(ab))
-                        return;
+                if (audit_pid) {
+                        struct nlmsghdr *nlh = (struct nlmsghdr *)ab->skb->data;
+                        nlh->nlmsg_len = ab->skb->len - NLMSG_SPACE(0);
+                        skb_queue_tail(&audit_skb_queue, ab->skb);
+                        ab->skb = NULL;
+                        wake_up_interruptible(&kauditd_wait);
+                } else {
+                        printk("%s\n", ab->skb->data + NLMSG_SPACE(0));
+                }
         }
-
-        atomic_dec(&audit_backlog);
-        spin_lock_irqsave(&audit_freelist_lock, flags);
-        if (++audit_freelist_count > AUDIT_MAXFREE)
-                kfree(ab);
-        else
-                list_add(&ab->list, &audit_freelist);
-        spin_unlock_irqrestore(&audit_freelist_lock, flags);
-}
-
-/* Send or queue the message in the audit buffer, depending on the
- * current context.  (A convenience function that may be called in any
- * context.) */
-void audit_log_end(struct audit_buffer *ab)
-{
-        if (in_irq())
-                audit_log_end_irq(ab);
-        else
-                audit_log_end_fast(ab);
+        audit_buffer_free(ab);
 }
 
 /* Log an audit record.  This is a convenience function that calls
  * audit_log_start, audit_log_vformat, and audit_log_end.  It may be
  * called in any context. */
-void audit_log(struct audit_context *ctx, const char *fmt, ...)
+void audit_log(struct audit_context *ctx, int type, const char *fmt, ...)
 {
         struct audit_buffer *ab;
         va_list args;
 
-        ab = audit_log_start(ctx);
+        ab = audit_log_start(ctx, type);
         if (ab) {
                 va_start(args, fmt);
                 audit_log_vformat(ab, fmt, args);
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 37b3ac94bc47..e75f84e1a1a0 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -34,7 +34,8 @@
 #include <asm/types.h>
 #include <linux/mm.h>
 #include <linux/module.h>
-
+#include <linux/mount.h>
+#include <linux/socket.h>
 #include <linux/audit.h>
 #include <linux/personality.h>
 #include <linux/time.h>
@@ -112,6 +113,23 @@ struct audit_aux_data_ipcctl {
         mode_t                  mode;
 };
 
+struct audit_aux_data_socketcall {
+        struct audit_aux_data   d;
+        int                     nargs;
+        unsigned long           args[0];
+};
+
+struct audit_aux_data_sockaddr {
+        struct audit_aux_data   d;
+        int                     len;
+        char                    a[0];
+};
+
+struct audit_aux_data_path {
+        struct audit_aux_data   d;
+        struct dentry           *dentry;
+        struct vfsmount         *mnt;
+};
 
 /* The per-task audit context. */
 struct audit_context {
@@ -127,6 +145,8 @@ struct audit_context {
         int                 auditable;  /* 1 if record should be written */
         int                 name_count;
         struct audit_names  names[AUDIT_NAMES];
+        struct dentry *     pwd;
+        struct vfsmount *   pwdmnt;
         struct audit_context *previous; /* For nested syscalls */
         struct audit_aux_data *aux;
 
@@ -157,6 +177,8 @@ struct audit_entry {
         struct audit_rule rule;
 };
 
+extern int audit_pid;
+
 /* Check to see if two rules are identical.  It is called from
  * audit_del_rule during AUDIT_DEL. */
 static int audit_compare_rule(struct audit_rule *a, struct audit_rule *b)
@@ -226,7 +248,6 @@ static inline int audit_del_rule(struct audit_rule *rule,
         return -EFAULT;         /* No matching rule */
 }
 
-#ifdef CONFIG_NET
 /* Copy rule from user-space to kernel-space.  Called during
  * AUDIT_ADD. */
 static int audit_copy_rule(struct audit_rule *d, struct audit_rule *s)
@@ -287,7 +308,8 @@ int audit_receive_filter(int type, int pid, int uid, int seq, void *data,
                         err = audit_add_rule(entry, &audit_entlist);
                 if (!err && (flags & AUDIT_AT_EXIT))
                         err = audit_add_rule(entry, &audit_extlist);
-                audit_log(NULL, "auid %u added an audit rule\n", loginuid);
+                audit_log(NULL, AUDIT_CONFIG_CHANGE, 
+                                "auid=%u added an audit rule\n", loginuid);
                 break;
         case AUDIT_DEL:
                 flags =((struct audit_rule *)data)->flags;
@@ -297,7 +319,8 @@ int audit_receive_filter(int type, int pid, int uid, int seq, void *data,
                         err = audit_del_rule(data, &audit_entlist);
                 if (!err && (flags & AUDIT_AT_EXIT))
                         err = audit_del_rule(data, &audit_extlist);
-                audit_log(NULL, "auid %u removed an audit rule\n", loginuid);
+                audit_log(NULL, AUDIT_CONFIG_CHANGE,
+                                "auid=%u removed an audit rule\n", loginuid);
                 break;
         default:
                 return -EINVAL;
@@ -305,7 +328,6 @@ int audit_receive_filter(int type, int pid, int uid, int seq, void *data,
 
         return err;
 }
-#endif
 
 /* Compare a task_struct with an audit_rule.  Return 1 on match, 0
  * otherwise. */
@@ -444,7 +466,7 @@ static enum audit_state audit_filter_task(struct task_struct *tsk)
 
 /* At syscall entry and exit time, this filter is called if the
  * audit_state is not low enough that auditing cannot take place, but is
- * also not high enough that we already know we have to write and audit
+ * also not high enough that we already know we have to write an audit
  * record (i.e., the state is AUDIT_SETUP_CONTEXT or  AUDIT_BUILD_CONTEXT).
  */
 static enum audit_state audit_filter_syscall(struct task_struct *tsk,
@@ -532,6 +554,12 @@ static inline void audit_free_names(struct audit_context *context)
                 if (context->names[i].name)
                         __putname(context->names[i].name);
         context->name_count = 0;
+        if (context->pwd)
+                dput(context->pwd);
+        if (context->pwdmnt)
+                mntput(context->pwdmnt);
+        context->pwd = NULL;
+        context->pwdmnt = NULL;
 }
 
 static inline void audit_free_aux(struct audit_context *context)
@@ -539,6 +567,11 @@ static inline void audit_free_aux(struct audit_context *context)
         struct audit_aux_data *aux;
 
         while ((aux = context->aux)) {
+                if (aux->type == AUDIT_AVC_PATH) {
+                        struct audit_aux_data_path *axi = (void *)aux;
+                        dput(axi->dentry);
+                        mntput(axi->mnt);
+                }
                 context->aux = aux->next;
                 kfree(aux);
         }
@@ -625,7 +658,8 @@ static void audit_log_task_info(struct audit_buffer *ab)
         struct vm_area_struct *vma;
 
         get_task_comm(name, current);
-        audit_log_format(ab, " comm=%s", name);
+        audit_log_format(ab, " comm=");
+        audit_log_untrustedstring(ab, name);
 
         if (!mm)
                 return;
@@ -649,23 +683,24 @@ static void audit_log_exit(struct audit_context *context)
 {
         int i;
         struct audit_buffer *ab;
+        struct audit_aux_data *aux;
 
-        ab = audit_log_start(context);
+        ab = audit_log_start(context, AUDIT_SYSCALL);
         if (!ab)
                 return;         /* audit_panic has been called */
-        audit_log_format(ab, "syscall=%d", context->major);
+        audit_log_format(ab, "arch=%x syscall=%d",
+                         context->arch, context->major);
         if (context->personality != PER_LINUX)
                 audit_log_format(ab, " per=%lx", context->personality);
-        audit_log_format(ab, " arch=%x", context->arch);
         if (context->return_valid)
                 audit_log_format(ab, " success=%s exit=%ld", 
                                  (context->return_valid==AUDITSC_SUCCESS)?"yes":"no",
                                  context->return_code);
         audit_log_format(ab,
                   " a0=%lx a1=%lx a2=%lx a3=%lx items=%d"
-                  " pid=%d loginuid=%d uid=%d gid=%d"
-                  " euid=%d suid=%d fsuid=%d"
-                  " egid=%d sgid=%d fsgid=%d",
+                  " pid=%d auid=%u uid=%u gid=%u"
+                  " euid=%u suid=%u fsuid=%u"
+                  " egid=%u sgid=%u fsgid=%u",
                   context->argv[0],
                   context->argv[1],
                   context->argv[2],
@@ -679,33 +714,57 @@ static void audit_log_exit(struct audit_context *context)
                   context->egid, context->sgid, context->fsgid);
         audit_log_task_info(ab);
         audit_log_end(ab);
-        while (context->aux) {
-                struct audit_aux_data *aux;
 
-                ab = audit_log_start(context);
+        for (aux = context->aux; aux; aux = aux->next) {
+
+                ab = audit_log_start(context, aux->type);
                 if (!ab)
                         continue; /* audit_panic has been called */
 
-                aux = context->aux;
-                context->aux = aux->next;
-
-                audit_log_format(ab, "auxitem=%d", aux->type);
                 switch (aux->type) {
-                case AUDIT_AUX_IPCPERM: {
+                case AUDIT_IPC: {
                         struct audit_aux_data_ipcctl *axi = (void *)aux;
                         audit_log_format(ab, 
-                                         " qbytes=%lx uid=%d gid=%d mode=%x",
+                                         " qbytes=%lx iuid=%u igid=%u mode=%x",
                                          axi->qbytes, axi->uid, axi->gid, axi->mode);
-                        }
+                        break; }
+
+                case AUDIT_SOCKETCALL: {
+                        int i;
+                        struct audit_aux_data_socketcall *axs = (void *)aux;
+                        audit_log_format(ab, "nargs=%d", axs->nargs);
+                        for (i=0; i<axs->nargs; i++)
+                                audit_log_format(ab, " a%d=%lx", i, axs->args[i]);
+                        break; }
+
+                case AUDIT_SOCKADDR: {
+                        struct audit_aux_data_sockaddr *axs = (void *)aux;
+
+                        audit_log_format(ab, "saddr=");
+                        audit_log_hex(ab, axs->a, axs->len);
+                        break; }
+
+                case AUDIT_AVC_PATH: {
+                        struct audit_aux_data_path *axi = (void *)aux;
+                        audit_log_d_path(ab, "path=", axi->dentry, axi->mnt);
+                        break; }
+
                 }
                 audit_log_end(ab);
-                kfree(aux);
         }
 
+        if (context->pwd && context->pwdmnt) {
+                ab = audit_log_start(context, AUDIT_CWD);
+                if (ab) {
+                        audit_log_d_path(ab, "cwd=", context->pwd, context->pwdmnt);
+                        audit_log_end(ab);
+                }
+        }
         for (i = 0; i < context->name_count; i++) {
-                ab = audit_log_start(context);
+                ab = audit_log_start(context, AUDIT_PATH);
                 if (!ab)
                         continue; /* audit_panic has been called */
+
                 audit_log_format(ab, "item=%d", i);
                 if (context->names[i].name) {
                         audit_log_format(ab, " name=");
@@ -713,7 +772,7 @@ static void audit_log_exit(struct audit_context *context)
                 }
                 if (context->names[i].ino != (unsigned long)-1)
                         audit_log_format(ab, " inode=%lu dev=%02x:%02x mode=%#o"
-                                             " uid=%d gid=%d rdev=%02x:%02x",
+                                             " ouid=%u ogid=%u rdev=%02x:%02x",
                                          context->names[i].ino,
                                          MAJOR(context->names[i].dev),
                                          MINOR(context->names[i].dev),
@@ -741,42 +800,12 @@ void audit_free(struct task_struct *tsk)
 
         /* Check for system calls that do not go through the exit
          * function (e.g., exit_group), then free context block. */
-        if (context->in_syscall && context->auditable)
+        if (context->in_syscall && context->auditable && context->pid != audit_pid)
                 audit_log_exit(context);
 
         audit_free_context(context);
 }
 
-/* Compute a serial number for the audit record.  Audit records are
- * written to user-space as soon as they are generated, so a complete
- * audit record may be written in several pieces.  The timestamp of the
- * record and this serial number are used by the user-space daemon to
- * determine which pieces belong to the same audit record.  The
- * (timestamp,serial) tuple is unique for each syscall and is live from
- * syscall entry to syscall exit.
- *
- * Atomic values are only guaranteed to be 24-bit, so we count down.
- *
- * NOTE: Another possibility is to store the formatted records off the
- * audit context (for those records that have a context), and emit them
- * all at syscall exit.  However, this could delay the reporting of
- * significant errors until syscall exit (or never, if the system
- * halts). */
-static inline unsigned int audit_serial(void)
-{
-        static atomic_t serial = ATOMIC_INIT(0xffffff);
-        unsigned int a, b;
-
-        do {
-                a = atomic_read(&serial);
-                if (atomic_dec_and_test(&serial))
-                        atomic_set(&serial, 0xffffff);
-                b = atomic_read(&serial);
-        } while (b != a - 1);
-
-        return 0xffffff - b;
-}
-
 /* Fill in audit context at syscall entry.  This only happens if the
  * audit context was created when the task was created and the state or
  * filters demand the audit context be built.  If the state from the
@@ -876,7 +905,7 @@ void audit_syscall_exit(struct task_struct *tsk, int valid, long return_code)
         if (likely(!context))
                 return;
 
-        if (context->in_syscall && context->auditable)
+        if (context->in_syscall && context->auditable && context->pid != audit_pid)
                 audit_log_exit(context);
 
         context->in_syscall = 0;
@@ -916,6 +945,13 @@ void audit_getname(const char *name)
         context->names[context->name_count].name = name;
         context->names[context->name_count].ino  = (unsigned long)-1;
         ++context->name_count;
+        if (!context->pwd) {
+                read_lock(&current->fs->lock);
+                context->pwd = dget(current->fs->pwd);
+                context->pwdmnt = mntget(current->fs->pwdmnt);
+                read_unlock(&current->fs->lock);
+        }
+                
 }
 
 /* Intercept a putname request.  Called from
@@ -994,34 +1030,26 @@ void audit_inode(const char *name, const struct inode *inode)
         context->names[idx].rdev = inode->i_rdev;
 }
 
-void audit_get_stamp(struct audit_context *ctx,
-                     struct timespec *t, unsigned int *serial)
+void auditsc_get_stamp(struct audit_context *ctx,
+                       struct timespec *t, unsigned int *serial)
 {
-        if (ctx) {
-                t->tv_sec  = ctx->ctime.tv_sec;
-                t->tv_nsec = ctx->ctime.tv_nsec;
-                *serial    = ctx->serial;
-                ctx->auditable = 1;
-        } else {
-                *t      = CURRENT_TIME;
-                *serial = 0;
-        }
+        t->tv_sec  = ctx->ctime.tv_sec;
+        t->tv_nsec = ctx->ctime.tv_nsec;
+        *serial    = ctx->serial;
+        ctx->auditable = 1;
 }
 
-extern int audit_set_type(struct audit_buffer *ab, int type);
-
 int audit_set_loginuid(struct task_struct *task, uid_t loginuid)
 {
         if (task->audit_context) {
                 struct audit_buffer *ab;
 
-                ab = audit_log_start(NULL);
+                ab = audit_log_start(NULL, AUDIT_LOGIN);
                 if (ab) {
                         audit_log_format(ab, "login pid=%d uid=%u "
-                                "old loginuid=%u new loginuid=%u",
+                                "old auid=%u new auid=%u",
                                 task->pid, task->uid, 
                                 task->audit_context->loginuid, loginuid);
-                        audit_set_type(ab, AUDIT_LOGIN);
                         audit_log_end(ab);
                 }
                 task->audit_context->loginuid = loginuid;
@@ -1051,8 +1079,89 @@ int audit_ipc_perms(unsigned long qbytes, uid_t uid, gid_t gid, mode_t mode)
         ax->gid = gid;
         ax->mode = mode;
 
-        ax->d.type = AUDIT_AUX_IPCPERM;
+        ax->d.type = AUDIT_IPC;
+        ax->d.next = context->aux;
+        context->aux = (void *)ax;
+        return 0;
+}
+
+int audit_socketcall(int nargs, unsigned long *args)
+{
+        struct audit_aux_data_socketcall *ax;
+        struct audit_context *context = current->audit_context;
+
+        if (likely(!context))
+                return 0;
+
+        ax = kmalloc(sizeof(*ax) + nargs * sizeof(unsigned long), GFP_KERNEL);
+        if (!ax)
+                return -ENOMEM;
+
+        ax->nargs = nargs;
+        memcpy(ax->args, args, nargs * sizeof(unsigned long));
+
+        ax->d.type = AUDIT_SOCKETCALL;
+        ax->d.next = context->aux;
+        context->aux = (void *)ax;
+        return 0;
+}
+
+int audit_sockaddr(int len, void *a)
+{
+        struct audit_aux_data_sockaddr *ax;
+        struct audit_context *context = current->audit_context;
+
+        if (likely(!context))
+                return 0;
+
+        ax = kmalloc(sizeof(*ax) + len, GFP_KERNEL);
+        if (!ax)
+                return -ENOMEM;
+
+        ax->len = len;
+        memcpy(ax->a, a, len);
+
+        ax->d.type = AUDIT_SOCKADDR;
         ax->d.next = context->aux;
         context->aux = (void *)ax;
         return 0;
 }
+
+int audit_avc_path(struct dentry *dentry, struct vfsmount *mnt)
+{
+        struct audit_aux_data_path *ax;
+        struct audit_context *context = current->audit_context;
+
+        if (likely(!context))
+                return 0;
+
+        ax = kmalloc(sizeof(*ax), GFP_ATOMIC);
+        if (!ax)
+                return -ENOMEM;
+
+        ax->dentry = dget(dentry);
+        ax->mnt = mntget(mnt);
+
+        ax->d.type = AUDIT_AVC_PATH;
+        ax->d.next = context->aux;
+        context->aux = (void *)ax;
+        return 0;
+}
+
+void audit_signal_info(int sig, struct task_struct *t)
+{
+        extern pid_t audit_sig_pid;
+        extern uid_t audit_sig_uid;
+
+        if (unlikely(audit_pid && t->pid == audit_pid)) {
+                if (sig == SIGTERM || sig == SIGHUP) {
+                        struct audit_context *ctx = current->audit_context;
+                        audit_sig_pid = current->pid;
+                        if (ctx)
+                                audit_sig_uid = ctx->loginuid;
+                        else
+                                audit_sig_uid = current->uid;
+                }
+        }
+}
+
diff --git a/kernel/signal.c b/kernel/signal.c
index b3c24c732c5a..c89821b69ae3 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -24,6 +24,7 @@
 #include <linux/ptrace.h>
 #include <linux/posix-timers.h>
 #include <linux/signal.h>
+#include <linux/audit.h>
 #include <asm/param.h>
 #include <asm/uaccess.h>
 #include <asm/unistd.h>
@@ -667,7 +668,11 @@ static int check_kill_permission(int sig, struct siginfo *info,
             && (current->uid ^ t->suid) && (current->uid ^ t->uid)
             && !capable(CAP_KILL))
                 return error;
-        return security_task_kill(t, info, sig);
+
+        error = security_task_kill(t, info, sig);
+        if (!error)
+                audit_signal_info(sig, t); /* Let audit system see the signal */
+        return error;
 }
 
 /* forward decl */
diff --git a/net/socket.c b/net/socket.c
index cec0cb38b9ce..38729af09461 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -81,6 +81,7 @@
 #include <linux/syscalls.h>
 #include <linux/compat.h>
 #include <linux/kmod.h>
+#include <linux/audit.h>
 
 #ifdef CONFIG_NET_RADIO
 #include <linux/wireless.h>             /* Note : will define WIRELESS_EXT */
@@ -226,7 +227,7 @@ int move_addr_to_kernel(void __user *uaddr, int ulen, void *kaddr)
                 return 0;
         if(copy_from_user(kaddr,uaddr,ulen))
                 return -EFAULT;
-        return 0;
+        return audit_sockaddr(ulen, kaddr);
 }
 
 /**
@@ -1906,7 +1907,11 @@ asmlinkage long sys_socketcall(int call, unsigned long __user *args)
         /* copy_from_user should be SMP safe. */
         if (copy_from_user(a, args, nargs[call]))
                 return -EFAULT;
-                
+
+        err = audit_socketcall(nargs[call]/sizeof(unsigned long), a);
+        if (err)
+                return err;
+
         a0=a[0];
         a1=a[1];
         
diff --git a/security/selinux/avc.c b/security/selinux/avc.c
index 85a6f66a873f..451502467a9b 100644
--- a/security/selinux/avc.c
+++ b/security/selinux/avc.c
@@ -242,7 +242,7 @@ void __init avc_init(void)
         avc_node_cachep = kmem_cache_create("avc_node", sizeof(struct avc_node),
                                              0, SLAB_PANIC, NULL, NULL);
 
-        audit_log(current->audit_context, "AVC INITIALIZED\n");
+        audit_log(current->audit_context, AUDIT_KERNEL, "AVC INITIALIZED\n");
 }
 
 int avc_get_hash_stats(char *page)
@@ -532,6 +532,7 @@ void avc_audit(u32 ssid, u32 tsid,
                u16 tclass, u32 requested,
                struct av_decision *avd, int result, struct avc_audit_data *a)
 {
+        struct task_struct *tsk = current;
         struct inode *inode = NULL;
         u32 denied, audited;
         struct audit_buffer *ab;
@@ -549,12 +550,18 @@ void avc_audit(u32 ssid, u32 tsid,
                         return;
         }
 
-        ab = audit_log_start(current->audit_context);
+        ab = audit_log_start(current->audit_context, AUDIT_AVC);
         if (!ab)
                 return;         /* audit_panic has been called */
         audit_log_format(ab, "avc:  %s ", denied ? "denied" : "granted");
         avc_dump_av(ab, tclass,audited);
         audit_log_format(ab, " for ");
+        if (a && a->tsk)
+                tsk = a->tsk;
+        if (tsk && tsk->pid) {
+                audit_log_format(ab, " pid=%d comm=", tsk->pid);
+                audit_log_untrustedstring(ab, tsk->comm);
+        }
         if (a) {
                 switch (a->type) {
                 case AVC_AUDIT_DATA_IPC:
@@ -566,21 +573,18 @@ void avc_audit(u32 ssid, u32 tsid,
                 case AVC_AUDIT_DATA_FS:
                         if (a->u.fs.dentry) {
                                 struct dentry *dentry = a->u.fs.dentry;
-                                if (a->u.fs.mnt) {
-                                        audit_log_d_path(ab, "path=", dentry,
-                                                        a->u.fs.mnt);
-                                } else {
-                                        audit_log_format(ab, " name=%s",
-                                                         dentry->d_name.name);
-                                }
+                                if (a->u.fs.mnt)
+                                        audit_avc_path(dentry, a->u.fs.mnt);
+                                audit_log_format(ab, " name=");
+                                audit_log_untrustedstring(ab, dentry->d_name.name);
                                 inode = dentry->d_inode;
                         } else if (a->u.fs.inode) {
                                 struct dentry *dentry;
                                 inode = a->u.fs.inode;
                                 dentry = d_find_alias(inode);
                                 if (dentry) {
-                                        audit_log_format(ab, " name=%s",
-                                                         dentry->d_name.name);
+                                        audit_log_format(ab, " name=");
+                                        audit_log_untrustedstring(ab, dentry->d_name.name);
                                         dput(dentry);
                                 }
                         }
@@ -623,22 +627,20 @@ void avc_audit(u32 ssid, u32 tsid,
                                 case AF_UNIX:
                                         u = unix_sk(sk);
                                         if (u->dentry) {
-                                                audit_log_d_path(ab, "path=",
-                                                        u->dentry, u->mnt);
+                                                audit_avc_path(u->dentry, u->mnt);
+                                                audit_log_format(ab, " name=");
+                                                audit_log_untrustedstring(ab, u->dentry->d_name.name);
                                                 break;
                                         }
                                         if (!u->addr)
                                                 break;
                                         len = u->addr->len-sizeof(short);
                                         p = &u->addr->name->sun_path[0];
+                                        audit_log_format(ab, " path=");
                                         if (*p)
-                                                audit_log_format(ab,
-                                                        "path=%*.*s", len,
-                                                        len, p);
+                                                audit_log_untrustedstring(ab, p);
                                         else
-                                                audit_log_format(ab,
-                                                        "path=@%*.*s", len-1,
-                                                        len-1, p+1);
+                                                audit_log_hex(ab, p, len);
                                         break;
                                 }
                         }
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index aae1e794fe48..db845cbd5841 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -3419,7 +3419,7 @@ static int selinux_nlmsg_perm(struct sock *sk, struct sk_buff *skb)
         err = selinux_nlmsg_lookup(isec->sclass, nlh->nlmsg_type, &perm);
         if (err) {
                 if (err == -EINVAL) {
-                        audit_log(current->audit_context,
+                        audit_log(current->audit_context, AUDIT_SELINUX_ERR,
                                   "SELinux:  unrecognized netlink message"
                                   " type=%hu for sclass=%hu\n",
                                   nlh->nlmsg_type, isec->sclass);
diff --git a/security/selinux/nlmsgtab.c b/security/selinux/nlmsgtab.c
index b3adb481bc25..f0fb6d76f7c5 100644
--- a/security/selinux/nlmsgtab.c
+++ b/security/selinux/nlmsgtab.c
@@ -97,6 +97,7 @@ static struct nlmsg_perm nlmsg_audit_perms[] =
         { AUDIT_ADD,            NETLINK_AUDIT_SOCKET__NLMSG_WRITE    },
         { AUDIT_DEL,            NETLINK_AUDIT_SOCKET__NLMSG_WRITE    },
         { AUDIT_USER,           NETLINK_AUDIT_SOCKET__NLMSG_RELAY    },
+        { AUDIT_SIGNAL_INFO,    NETLINK_AUDIT_SOCKET__NLMSG_READ     },
 };
 
 
@@ -141,8 +142,13 @@ int selinux_nlmsg_lookup(u16 sclass, u16 nlmsg_type, u32 *perm)
                 break;
 
         case SECCLASS_NETLINK_AUDIT_SOCKET:
-                err = nlmsg_perm(nlmsg_type, perm, nlmsg_audit_perms,
-                                 sizeof(nlmsg_audit_perms));
+                if (nlmsg_type >= AUDIT_FIRST_USER_MSG &&
+                    nlmsg_type <= AUDIT_LAST_USER_MSG) {
+                        *perm = NETLINK_AUDIT_SOCKET__NLMSG_RELAY;
+                } else {
+                        err = nlmsg_perm(nlmsg_type, perm, nlmsg_audit_perms,
+                                         sizeof(nlmsg_audit_perms));
+                }
                 break;
 
         /* No messaging from userspace, or class unknown/unhandled */
diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c
index 8449d667b062..b6149147d5cb 100644
--- a/security/selinux/ss/services.c
+++ b/security/selinux/ss/services.c
@@ -365,7 +365,7 @@ static int security_validtrans_handle_fail(struct context *ocontext,
                 goto out;
         if (context_struct_to_string(tcontext, &t, &tlen) < 0)
                 goto out;
-        audit_log(current->audit_context,
+        audit_log(current->audit_context, AUDIT_SELINUX_ERR,
                   "security_validate_transition:  denied for"
                   " oldcontext=%s newcontext=%s taskcontext=%s tclass=%s",
                   o, n, t, policydb.p_class_val_to_name[tclass-1]);
@@ -742,7 +742,7 @@ static int compute_sid_handle_invalid_context(
                 goto out;
         if (context_struct_to_string(newcontext, &n, &nlen) < 0)
                 goto out;
-        audit_log(current->audit_context,
+        audit_log(current->audit_context, AUDIT_SELINUX_ERR,
                   "security_compute_sid:  invalid context %s"
                   " for scontext=%s"
                   " tcontext=%s"