--- /dev/null
+/* audit.h -- Auditing support
+ *
+ * Copyright 2003-2004 Red Hat Inc., Durham, North Carolina.
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Written by Rickard E. (Rik) Faith <faith@redhat.com>
+ *
+ */
+#ifndef _LINUX_AUDIT_H_
+#define _LINUX_AUDIT_H_
+
+#include <linux/sched.h>
+#include <linux/ptrace.h>
+#include <uapi/linux/audit.h>
+
+struct audit_sig_info {
+ uid_t uid;
+ pid_t pid;
+ char ctx[0];
+};
+
+struct audit_buffer;
+struct audit_context;
+struct inode;
+struct netlink_skb_parms;
+struct path;
+struct linux_binprm;
+struct mq_attr;
+struct mqstat;
+struct audit_watch;
+struct audit_tree;
+struct sk_buff;
+
+struct audit_krule {
+ u32 pflags;
+ u32 flags;
+ u32 listnr;
+ u32 action;
+ u32 mask[AUDIT_BITMASK_SIZE];
+ u32 buflen; /* for data alloc on list rules */
+ u32 field_count;
+ char *filterkey; /* ties events to rules */
+ struct audit_field *fields;
+ struct audit_field *arch_f; /* quick access to arch field */
+ struct audit_field *inode_f; /* quick access to an inode field */
+ struct audit_watch *watch; /* associated watch */
+ struct audit_tree *tree; /* associated watched tree */
+ struct list_head rlist; /* entry in audit_{watch,tree}.rules list */
+ struct list_head list; /* for AUDIT_LIST* purposes only */
+ u64 prio;
+};
+
+/* Flag to indicate legacy AUDIT_LOGINUID unset usage */
+#define AUDIT_LOGINUID_LEGACY 0x1
+
+struct audit_field {
+ u32 type;
+ union {
+ u32 val;
+ kuid_t uid;
+ kgid_t gid;
+ struct {
+ char *lsm_str;
+ void *lsm_rule;
+ };
+ };
+ u32 op;
+};
+
+extern int is_audit_feature_set(int which);
+
+extern int __init audit_register_class(int class, unsigned *list);
+extern int audit_classify_syscall(int abi, unsigned syscall);
+extern int audit_classify_arch(int arch);
+/* only for compat system calls */
+extern unsigned compat_write_class[];
+extern unsigned compat_read_class[];
+extern unsigned compat_dir_class[];
+extern unsigned compat_chattr_class[];
+extern unsigned compat_signal_class[];
+
+extern int audit_classify_compat_syscall(int abi, unsigned syscall);
+
+/* audit_names->type values */
+#define AUDIT_TYPE_UNKNOWN 0 /* we don't know yet */
+#define AUDIT_TYPE_NORMAL 1 /* a "normal" audit record */
+#define AUDIT_TYPE_PARENT 2 /* a parent audit record */
+#define AUDIT_TYPE_CHILD_DELETE 3 /* a child being deleted */
+#define AUDIT_TYPE_CHILD_CREATE 4 /* a child being created */
+
+/* maximized args number that audit_socketcall can process */
+#define AUDITSC_ARGS 6
+
+struct filename;
+
+extern void audit_log_session_info(struct audit_buffer *ab);
+
+#ifdef CONFIG_AUDIT_COMPAT_GENERIC
+#define audit_is_compat(arch) (!((arch) & __AUDIT_ARCH_64BIT))
+#else
+#define audit_is_compat(arch) false
+#endif
+
+#ifdef CONFIG_AUDITSYSCALL
+#include <asm/syscall.h> /* for syscall_get_arch() */
+
+/* These are defined in auditsc.c */
+ /* Public API */
+extern int audit_alloc(struct task_struct *task);
+extern void __audit_free(struct task_struct *task);
+extern void __audit_syscall_entry(int major, unsigned long a0, unsigned long a1,
+ unsigned long a2, unsigned long a3);
+extern void __audit_syscall_exit(int ret_success, long ret_value);
+extern struct filename *__audit_reusename(const __user char *uptr);
+extern void __audit_getname(struct filename *name);
+
+#define AUDIT_INODE_PARENT 1 /* dentry represents the parent */
+#define AUDIT_INODE_HIDDEN 2 /* audit record should be hidden */
+extern void __audit_inode(struct filename *name, const struct dentry *dentry,
+ unsigned int flags);
+extern void __audit_file(const struct file *);
+extern void __audit_inode_child(const struct inode *parent,
+ const struct dentry *dentry,
+ const unsigned char type);
+extern void __audit_seccomp(unsigned long syscall, long signr, int code);
+extern void __audit_ptrace(struct task_struct *t);
+
+static inline int audit_dummy_context(void)
+{
+ void *p = current->audit_context;
+ return !p || *(int *)p;
+}
+static inline void audit_free(struct task_struct *task)
+{
+ if (unlikely(task->audit_context))
+ __audit_free(task);
+}
+static inline void audit_syscall_entry(int major, unsigned long a0,
+ unsigned long a1, unsigned long a2,
+ unsigned long a3)
+{
+ if (unlikely(current->audit_context))
+ __audit_syscall_entry(major, a0, a1, a2, a3);
+}
+static inline void audit_syscall_exit(void *pt_regs)
+{
+ if (unlikely(current->audit_context)) {
+ int success = is_syscall_success(pt_regs);
+ long return_code = regs_return_value(pt_regs);
+
+ __audit_syscall_exit(success, return_code);
+ }
+}
+static inline struct filename *audit_reusename(const __user char *name)
+{
+ if (unlikely(!audit_dummy_context()))
+ return __audit_reusename(name);
+ return NULL;
+}
+static inline void audit_getname(struct filename *name)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_getname(name);
+}
+static inline void audit_inode(struct filename *name,
+ const struct dentry *dentry,
+ unsigned int parent) {
+ if (unlikely(!audit_dummy_context())) {
+ unsigned int flags = 0;
+ if (parent)
+ flags |= AUDIT_INODE_PARENT;
+ __audit_inode(name, dentry, flags);
+ }
+}
+static inline void audit_file(struct file *file)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_file(file);
+}
+static inline void audit_inode_parent_hidden(struct filename *name,
+ const struct dentry *dentry)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_inode(name, dentry,
+ AUDIT_INODE_PARENT | AUDIT_INODE_HIDDEN);
+}
+static inline void audit_inode_child(const struct inode *parent,
+ const struct dentry *dentry,
+ const unsigned char type) {
+ if (unlikely(!audit_dummy_context()))
+ __audit_inode_child(parent, dentry, type);
+}
+void audit_core_dumps(long signr);
+
+static inline void audit_seccomp(unsigned long syscall, long signr, int code)
+{
+ /* Force a record to be reported if a signal was delivered. */
+ if (signr || unlikely(!audit_dummy_context()))
+ __audit_seccomp(syscall, signr, code);
+}
+
+static inline void audit_ptrace(struct task_struct *t)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_ptrace(t);
+}
+
+ /* Private API (for audit.c only) */
+extern unsigned int audit_serial(void);
+extern int auditsc_get_stamp(struct audit_context *ctx,
+ struct timespec *t, unsigned int *serial);
+extern int audit_set_loginuid(kuid_t loginuid);
+
+static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
+{
+ return tsk->loginuid;
+}
+
+static inline unsigned int audit_get_sessionid(struct task_struct *tsk)
+{
+ return tsk->sessionid;
+}
+
+extern void __audit_ipc_obj(struct kern_ipc_perm *ipcp);
+extern void __audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode);
+extern void __audit_bprm(struct linux_binprm *bprm);
+extern int __audit_socketcall(int nargs, unsigned long *args);
+extern int __audit_sockaddr(int len, void *addr);
+extern void __audit_fd_pair(int fd1, int fd2);
+extern void __audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr);
+extern void __audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout);
+extern void __audit_mq_notify(mqd_t mqdes, const struct sigevent *notification);
+extern void __audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat);
+extern int __audit_log_bprm_fcaps(struct linux_binprm *bprm,
+ const struct cred *new,
+ const struct cred *old);
+extern void __audit_log_capset(const struct cred *new, const struct cred *old);
+extern void __audit_mmap_fd(int fd, int flags);
+
+static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_ipc_obj(ipcp);
+}
+static inline void audit_fd_pair(int fd1, int fd2)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_fd_pair(fd1, fd2);
+}
+static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid, gid_t gid, umode_t mode)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_ipc_set_perm(qbytes, uid, gid, mode);
+}
+static inline void audit_bprm(struct linux_binprm *bprm)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_bprm(bprm);
+}
+static inline int audit_socketcall(int nargs, unsigned long *args)
+{
+ if (unlikely(!audit_dummy_context()))
+ return __audit_socketcall(nargs, args);
+ return 0;
+}
+static inline int audit_sockaddr(int len, void *addr)
+{
+ if (unlikely(!audit_dummy_context()))
+ return __audit_sockaddr(len, addr);
+ return 0;
+}
+static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_mq_open(oflag, mode, attr);
+}
+static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len, unsigned int msg_prio, const struct timespec *abs_timeout)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_mq_sendrecv(mqdes, msg_len, msg_prio, abs_timeout);
+}
+static inline void audit_mq_notify(mqd_t mqdes, const struct sigevent *notification)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_mq_notify(mqdes, notification);
+}
+static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_mq_getsetattr(mqdes, mqstat);
+}
+
+static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
+ const struct cred *new,
+ const struct cred *old)
+{
+ if (unlikely(!audit_dummy_context()))
+ return __audit_log_bprm_fcaps(bprm, new, old);
+ return 0;
+}
+
+static inline void audit_log_capset(const struct cred *new,
+ const struct cred *old)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_log_capset(new, old);
+}
+
+static inline void audit_mmap_fd(int fd, int flags)
+{
+ if (unlikely(!audit_dummy_context()))
+ __audit_mmap_fd(fd, flags);
+}
+
+extern int audit_n_rules;
+extern int audit_signals;
+#else /* CONFIG_AUDITSYSCALL */
+static inline int audit_alloc(struct task_struct *task)
+{
+ return 0;
+}
+static inline void audit_free(struct task_struct *task)
+{ }
+static inline void audit_syscall_entry(int major, unsigned long a0,
+ unsigned long a1, unsigned long a2,
+ unsigned long a3)
+{ }
+static inline void audit_syscall_exit(void *pt_regs)
+{ }
+static inline int audit_dummy_context(void)
+{
+ return 1;
+}
+static inline struct filename *audit_reusename(const __user char *name)
+{
+ return NULL;
+}
+static inline void audit_getname(struct filename *name)
+{ }
+static inline void __audit_inode(struct filename *name,
+ const struct dentry *dentry,
+ unsigned int flags)
+{ }
+static inline void __audit_inode_child(const struct inode *parent,
+ const struct dentry *dentry,
+ const unsigned char type)
+{ }
+static inline void audit_inode(struct filename *name,
+ const struct dentry *dentry,
+ unsigned int parent)
+{ }
+static inline void audit_file(struct file *file)
+{
+}
+static inline void audit_inode_parent_hidden(struct filename *name,
+ const struct dentry *dentry)
+{ }
+static inline void audit_inode_child(const struct inode *parent,
+ const struct dentry *dentry,
+ const unsigned char type)
+{ }
+static inline void audit_core_dumps(long signr)
+{ }
+static inline void __audit_seccomp(unsigned long syscall, long signr, int code)
+{ }
+static inline void audit_seccomp(unsigned long syscall, long signr, int code)
+{ }
+static inline int auditsc_get_stamp(struct audit_context *ctx,
+ struct timespec *t, unsigned int *serial)
+{
+ return 0;
+}
+static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
+{
+ return INVALID_UID;
+}
+static inline unsigned int audit_get_sessionid(struct task_struct *tsk)
+{
+ return -1;
+}
+static inline void audit_ipc_obj(struct kern_ipc_perm *ipcp)
+{ }
+static inline void audit_ipc_set_perm(unsigned long qbytes, uid_t uid,
+ gid_t gid, umode_t mode)
+{ }
+static inline void audit_bprm(struct linux_binprm *bprm)
+{ }
+static inline int audit_socketcall(int nargs, unsigned long *args)
+{
+ return 0;
+}
+static inline void audit_fd_pair(int fd1, int fd2)
+{ }
+static inline int audit_sockaddr(int len, void *addr)
+{
+ return 0;
+}
+static inline void audit_mq_open(int oflag, umode_t mode, struct mq_attr *attr)
+{ }
+static inline void audit_mq_sendrecv(mqd_t mqdes, size_t msg_len,
+ unsigned int msg_prio,
+ const struct timespec *abs_timeout)
+{ }
+static inline void audit_mq_notify(mqd_t mqdes,
+ const struct sigevent *notification)
+{ }
+static inline void audit_mq_getsetattr(mqd_t mqdes, struct mq_attr *mqstat)
+{ }
+static inline int audit_log_bprm_fcaps(struct linux_binprm *bprm,
+ const struct cred *new,
+ const struct cred *old)
+{
+ return 0;
+}
+static inline void audit_log_capset(const struct cred *new,
+ const struct cred *old)
+{ }
+static inline void audit_mmap_fd(int fd, int flags)
+{ }
+static inline void audit_ptrace(struct task_struct *t)
+{ }
+#define audit_n_rules 0
+#define audit_signals 0
+#endif /* CONFIG_AUDITSYSCALL */
+
+static inline bool audit_loginuid_set(struct task_struct *tsk)
+{
+ return uid_valid(audit_get_loginuid(tsk));
+}
+
+#ifdef CONFIG_AUDIT
+/* These are defined in audit.c */
+ /* Public API */
+extern __printf(4, 5)
+void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
+ const char *fmt, ...);
+
+extern struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type);
+extern __printf(2, 3)
+void audit_log_format(struct audit_buffer *ab, const char *fmt, ...);
+extern void audit_log_end(struct audit_buffer *ab);
+extern int audit_string_contains_control(const char *string,
+ size_t len);
+extern void audit_log_n_hex(struct audit_buffer *ab,
+ const unsigned char *buf,
+ size_t len);
+extern void audit_log_n_string(struct audit_buffer *ab,
+ const char *buf,
+ size_t n);
+extern void audit_log_n_untrustedstring(struct audit_buffer *ab,
+ const char *string,
+ size_t n);
+extern void audit_log_untrustedstring(struct audit_buffer *ab,
+ const char *string);
+extern void audit_log_d_path(struct audit_buffer *ab,
+ const char *prefix,
+ const struct path *path);
+extern void audit_log_key(struct audit_buffer *ab,
+ char *key);
+extern void audit_log_link_denied(const char *operation,
+ struct path *link);
+extern void audit_log_lost(const char *message);
+#ifdef CONFIG_SECURITY
+extern void audit_log_secctx(struct audit_buffer *ab, u32 secid);
+#else
+static inline void audit_log_secctx(struct audit_buffer *ab, u32 secid)
+{ }
+#endif
+
+extern int audit_log_task_context(struct audit_buffer *ab);
+extern void audit_log_task_info(struct audit_buffer *ab,
+ struct task_struct *tsk);
+
+extern int audit_update_lsm_rules(void);
+
+ /* Private API (for audit.c only) */
+extern int audit_filter_user(int type);
+extern int audit_filter_type(int type);
+extern int audit_rule_change(int type, __u32 portid, int seq,
+ void *data, size_t datasz);
+extern int audit_list_rules_send(struct sk_buff *request_skb, int seq);
+
+extern u32 audit_enabled;
+#else /* CONFIG_AUDIT */
+static inline __printf(4, 5)
+void audit_log(struct audit_context *ctx, gfp_t gfp_mask, int type,
+ const char *fmt, ...)
+{ }
+static inline struct audit_buffer *audit_log_start(struct audit_context *ctx,
+ gfp_t gfp_mask, int type)
+{
+ return NULL;
+}
+static inline __printf(2, 3)
+void audit_log_format(struct audit_buffer *ab, const char *fmt, ...)
+{ }
+static inline void audit_log_end(struct audit_buffer *ab)
+{ }
+static inline void audit_log_n_hex(struct audit_buffer *ab,
+ const unsigned char *buf, size_t len)
+{ }
+static inline void audit_log_n_string(struct audit_buffer *ab,
+ const char *buf, size_t n)
+{ }
+static inline void audit_log_n_untrustedstring(struct audit_buffer *ab,
+ const char *string, size_t n)
+{ }
+static inline void audit_log_untrustedstring(struct audit_buffer *ab,
+ const char *string)
+{ }
+static inline void audit_log_d_path(struct audit_buffer *ab,
+ const char *prefix,
+ const struct path *path)
+{ }
+static inline void audit_log_key(struct audit_buffer *ab, char *key)
+{ }
+static inline void audit_log_link_denied(const char *string,
+ const struct path *link)
+{ }
+static inline void audit_log_secctx(struct audit_buffer *ab, u32 secid)
+{ }
+static inline int audit_log_task_context(struct audit_buffer *ab)
+{
+ return 0;
+}
+static inline void audit_log_task_info(struct audit_buffer *ab,
+ struct task_struct *tsk)
+{ }
+#define audit_enabled 0
+#endif /* CONFIG_AUDIT */
+static inline void audit_log_string(struct audit_buffer *ab, const char *buf)
+{
+ audit_log_n_string(ab, buf, strlen(buf));
+}
+
+#endif
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