#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 - 1599 kernel LSPP events
+ * 1600 - 1699 kernel crypto events
+ * 1700 - 1799 kernel anomaly records
+ * 1800 - 1999 future kernel use (maybe integrity labels and related events)
+ * 2000 is for otherwise unclassified kernel audit messages (legacy)
+ * 2001 - 2099 unused (kernel)
+ * 2100 - 2199 user space anomaly records
+ * 2200 - 2299 user space actions taken in response to anomalies
+ * 2300 - 2399 user space generated LSPP events
+ * 2400 - 2499 user space crypto events
+ * 2500 - 2999 future user space (maybe integrity labels and related events)
+ *
+ * Messages from 1000-1199 are bi-directional. 1200-1299 & 2100 - 2999 are
+ * exclusively user space. 1300-2099 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 rules -- deprecated */
+#define AUDIT_ADD 1003 /* Add syscall rule -- deprecated */
+#define AUDIT_DEL 1004 /* Delete syscall rule -- deprecated */
+#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_ADD_RULE 1011 /* Add syscall filtering rule */
+#define AUDIT_DEL_RULE 1012 /* Delete syscall filtering rule */
+#define AUDIT_LIST_RULES 1013 /* List syscall filtering rules */
+
+#define AUDIT_FIRST_USER_MSG 1100 /* Userspace messages mostly uninteresting to kernel */
+#define AUDIT_USER_AVC 1107 /* We filter this differently */
+#define AUDIT_LAST_USER_MSG 1199
+#define AUDIT_FIRST_USER_MSG2 2100 /* More user space messages */
+#define AUDIT_LAST_USER_MSG2 2999
+
+#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_MAC_POLICY_LOAD 1403 /* Policy file load */
+#define AUDIT_MAC_STATUS 1404 /* Changed enforcing,permissive,off */
+#define AUDIT_MAC_CONFIG_CHANGE 1405 /* Changes to booleans */
+
+#define AUDIT_FIRST_KERN_ANOM_MSG 1700
+#define AUDIT_LAST_KERN_ANOM_MSG 1799
+#define AUDIT_ANOM_PROMISCUOUS 1700 /* Device changed promiscuous mode */
+
+#define AUDIT_KERNEL 2000 /* Asynchronous audit record. NOT A REQUEST. */
/* Rule flags */
-#define AUDIT_PER_TASK 0x01 /* Apply rule at task creation (not syscall) */
-#define AUDIT_AT_ENTRY 0x02 /* Apply rule at syscall entry */
-#define AUDIT_AT_EXIT 0x04 /* Apply rule at syscall exit */
-#define AUDIT_PREPEND 0x10 /* Prepend to front of list */
+#define AUDIT_FILTER_USER 0x00 /* Apply rule to user-generated messages */
+#define AUDIT_FILTER_TASK 0x01 /* Apply rule at task creation (not syscall) */
+#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_NR_FILTERS 6
+
+#define AUDIT_FILTER_PREPEND 0x10 /* Prepend to front of list */
/* Rule actions */
#define AUDIT_NEVER 0 /* Do not build context if rule matches */
#define AUDIT_WORD(nr) ((__u32)((nr)/32))
#define AUDIT_BIT(nr) (1 << ((nr) - AUDIT_WORD(nr)*32))
+/* This bitmask is used to validate user input. It represents all bits that
+ * are currently used in an audit field constant understood by the kernel.
+ * If you are adding a new #define AUDIT_<whatever>, please ensure that
+ * AUDIT_UNUSED_BITS is updated if need be. */
+#define AUDIT_UNUSED_BITS 0x0FFFFC00
+
+
/* Rule fields */
/* These are useful when checking the
* task structure at task creation time
#define AUDIT_LOGINUID 9
#define AUDIT_PERS 10
#define AUDIT_ARCH 11
+#define AUDIT_MSGTYPE 12
+#define AUDIT_SE_USER 13 /* security label user */
+#define AUDIT_SE_ROLE 14 /* security label role */
+#define AUDIT_SE_TYPE 15 /* security label type */
+#define AUDIT_SE_SEN 16 /* security label sensitivity label */
+#define AUDIT_SE_CLR 17 /* security label clearance label */
/* These are ONLY useful when checking
* at syscall exit time (AUDIT_AT_EXIT). */
#define AUDIT_ARG2 (AUDIT_ARG0+2)
#define AUDIT_ARG3 (AUDIT_ARG0+3)
-#define AUDIT_NEGATE 0x80000000
+#define AUDIT_NEGATE 0x80000000
+/* These are the supported operators.
+ * 4 2 1
+ * = > <
+ * -------
+ * 0 0 0 0 nonsense
+ * 0 0 1 1 <
+ * 0 1 0 2 >
+ * 0 1 1 3 !=
+ * 1 0 0 4 =
+ * 1 0 1 5 <=
+ * 1 1 0 6 >=
+ * 1 1 1 7 all operators
+ */
+#define AUDIT_LESS_THAN 0x10000000
+#define AUDIT_GREATER_THAN 0x20000000
+#define AUDIT_NOT_EQUAL 0x30000000
+#define AUDIT_EQUAL 0x40000000
+#define AUDIT_LESS_THAN_OR_EQUAL (AUDIT_LESS_THAN|AUDIT_EQUAL)
+#define AUDIT_GREATER_THAN_OR_EQUAL (AUDIT_GREATER_THAN|AUDIT_EQUAL)
+#define AUDIT_OPERATORS (AUDIT_EQUAL|AUDIT_NOT_EQUAL)
/* Status symbols */
/* Mask values */
#define AUDIT_ARCH_SH64 (EM_SH|__AUDIT_ARCH_64BIT)
#define AUDIT_ARCH_SHEL64 (EM_SH|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
#define AUDIT_ARCH_SPARC (EM_SPARC)
-#define AUDIT_ARCH_SPARC64 (EM_SPARC64|__AUDIT_ARCH_64BIT)
+#define AUDIT_ARCH_SPARC64 (EM_SPARCV9|__AUDIT_ARCH_64BIT)
#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) */
__u32 backlog; /* messages waiting in queue */
};
+/* audit_rule_data supports filter rules with both integer and string
+ * fields. It corresponds with AUDIT_ADD_RULE, AUDIT_DEL_RULE and
+ * AUDIT_LIST_RULES requests.
+ */
+struct audit_rule_data {
+ __u32 flags; /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
+ __u32 action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
+ __u32 field_count;
+ __u32 mask[AUDIT_BITMASK_SIZE]; /* syscall(s) affected */
+ __u32 fields[AUDIT_MAX_FIELDS];
+ __u32 values[AUDIT_MAX_FIELDS];
+ __u32 fieldflags[AUDIT_MAX_FIELDS];
+ __u32 buflen; /* total length of string fields */
+ char buf[0]; /* string fields buffer */
+};
+
+/* audit_rule is supported to maintain backward compatibility with
+ * userspace. It supports integer fields only and corresponds to
+ * AUDIT_ADD, AUDIT_DEL and AUDIT_LIST requests.
+ */
struct audit_rule { /* for AUDIT_LIST, AUDIT_ADD, and AUDIT_DEL */
__u32 flags; /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */
__u32 action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */
#ifdef __KERNEL__
+struct audit_sig_info {
+ uid_t uid;
+ pid_t pid;
+};
+
struct audit_buffer;
struct audit_context;
struct inode;
+struct netlink_skb_parms;
#define AUDITSC_INVALID 0
#define AUDITSC_SUCCESS 1
/* Public API */
extern int audit_alloc(struct task_struct *task);
extern void audit_free(struct task_struct *task);
-extern void audit_syscall_entry(struct task_struct *task, int arch,
+extern void audit_syscall_entry(int arch,
int major, unsigned long a0, unsigned long a1,
unsigned long a2, unsigned long a3);
-extern void audit_syscall_exit(struct task_struct *task, int failed, long return_code);
+extern void audit_syscall_exit(int failed, long return_code);
extern void audit_getname(const char *name);
extern void audit_putname(const char *name);
-extern void audit_inode(const char *name, const struct inode *inode);
+extern void __audit_inode(const char *name, const struct inode *inode, unsigned flags);
+extern void __audit_inode_child(const char *dname, const struct inode *inode,
+ unsigned long pino);
+static inline void audit_inode(const char *name, const struct inode *inode,
+ unsigned flags) {
+ if (unlikely(current->audit_context))
+ __audit_inode(name, inode, flags);
+}
+static inline void audit_inode_child(const char *dname,
+ const struct inode *inode,
+ unsigned long pino) {
+ if (unlikely(current->audit_context))
+ __audit_inode_child(dname, inode, pino);
+}
/* Private API (for audit.c only) */
-extern int audit_receive_filter(int type, int pid, int uid, int seq,
- void *data);
-extern void audit_get_stamp(struct audit_context *ctx,
- struct timespec *t, unsigned int *serial);
-extern int audit_set_loginuid(struct audit_context *ctx, uid_t loginuid);
+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_ipc_perms(unsigned long qbytes, uid_t uid, gid_t gid, mode_t mode, struct kern_ipc_perm *ipcp);
+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);
+extern int audit_set_macxattr(const char *name);
#else
#define audit_alloc(t) ({ 0; })
#define audit_free(t) do { ; } while (0)
-#define audit_syscall_entry(t,ta,a,b,c,d,e) do { ; } while (0)
-#define audit_syscall_exit(t,f,r) do { ; } while (0)
+#define audit_syscall_entry(ta,a,b,c,d,e) do { ; } while (0)
+#define audit_syscall_exit(f,r) do { ; } while (0)
#define audit_getname(n) do { ; } while (0)
#define audit_putname(n) do { ; } while (0)
-#define audit_inode(n,i) do { ; } while (0)
+#define __audit_inode(n,i,f) do { ; } while (0)
+#define __audit_inode_child(d,i,p) do { ; } while (0)
+#define audit_inode(n,i,f) do { ; } while (0)
+#define audit_inode_child(d,i,p) do { ; } while (0)
+#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_ipc_perms(q,u,g,m,i) ({ 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)
+#define audit_set_macxattr(n) do { ; } while (0)
#endif
#ifdef CONFIG_AUDIT
/* These are defined in audit.c */
/* Public API */
-extern void audit_log(struct audit_context *ctx,
- const char *fmt, ...)
- __attribute__((format(printf,2,3)));
+extern void audit_log(struct audit_context *ctx, gfp_t gfp_mask,
+ int type, const char *fmt, ...)
+ __attribute__((format(printf,4,5)));
-extern struct audit_buffer *audit_log_start(struct audit_context *ctx);
+extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type);
extern void audit_log_format(struct audit_buffer *ab,
const char *fmt, ...)
__attribute__((format(printf,2,3)));
const char *prefix,
struct dentry *dentry,
struct vfsmount *vfsmnt);
- /* Private API (for auditsc.c only) */
-extern void audit_send_reply(int pid, int seq, int type,
- int done, int multi,
- void *payload, int size);
-extern void audit_log_lost(const char *message);
+ /* Private API (for audit.c only) */
+extern int audit_filter_user(struct netlink_skb_parms *cb, int type);
+extern int audit_filter_type(int type);
+extern int audit_receive_filter(int type, int pid, int uid, int seq,
+ void *data, size_t datasz, uid_t loginuid);
#else
-#define audit_log(t,f,...) do { ; } while (0)
-#define audit_log_start(t) ({ NULL; })
+#define audit_log(c,g,t,f,...) do { ; } while (0)
+#define audit_log_start(c,g,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)
#define audit_log_hex(a,b,l) do { ; } while (0)
#define audit_log_untrustedstring(a,s) do { ; } while (0)
#define audit_log_d_path(b,p,d,v) do { ; } while (0)
+#define audit_panic(m) do { ; } while (0)
#endif
#endif
#endif
Code Review / linux-2.6.git / blobdiff