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-rw-r--r--include/linux/audit.h211
-rw-r--r--include/linux/fs.h14
-rw-r--r--include/linux/netlink.h1
-rw-r--r--include/linux/sched.h3
4 files changed, 228 insertions, 1 deletions
diff --git a/include/linux/audit.h b/include/linux/audit.h
new file mode 100644
index 000000000000..d766482451af
--- /dev/null
+++ b/include/linux/audit.h
@@ -0,0 +1,211 @@
+/* audit.h -- Auditing support -*- linux-c -*-
+ *
+ * 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_
+
+/* 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. */
+
+/* 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 */
+
+/* Rule actions */
+#define AUDIT_NEVER 0 /* Do not build context if rule matches */
+#define AUDIT_POSSIBLE 1 /* Build context if rule matches */
+#define AUDIT_ALWAYS 2 /* Generate audit record if rule matches */
+
+/* Rule structure sizes -- if these change, different AUDIT_ADD and
+ * AUDIT_LIST commands must be implemented. */
+#define AUDIT_MAX_FIELDS 64
+#define AUDIT_BITMASK_SIZE 64
+#define AUDIT_WORD(nr) ((__u32)((nr)/32))
+#define AUDIT_BIT(nr) (1 << ((nr) - AUDIT_WORD(nr)*32))
+
+/* Rule fields */
+ /* These are useful when checking the
+ * task structure at task creation time
+ * (AUDIT_PER_TASK). */
+#define AUDIT_PID 0
+#define AUDIT_UID 1
+#define AUDIT_EUID 2
+#define AUDIT_SUID 3
+#define AUDIT_FSUID 4
+#define AUDIT_GID 5
+#define AUDIT_EGID 6
+#define AUDIT_SGID 7
+#define AUDIT_FSGID 8
+#define AUDIT_LOGINUID 9
+#define AUDIT_PERS 10
+
+ /* These are ONLY useful when checking
+ * at syscall exit time (AUDIT_AT_EXIT). */
+#define AUDIT_DEVMAJOR 100
+#define AUDIT_DEVMINOR 101
+#define AUDIT_INODE 102
+#define AUDIT_EXIT 103
+#define AUDIT_SUCCESS 104 /* exit >= 0; value ignored */
+
+#define AUDIT_ARG0 200
+#define AUDIT_ARG1 (AUDIT_ARG0+1)
+#define AUDIT_ARG2 (AUDIT_ARG0+2)
+#define AUDIT_ARG3 (AUDIT_ARG0+3)
+
+#define AUDIT_NEGATE 0x80000000
+
+
+/* Status symbols */
+ /* Mask values */
+#define AUDIT_STATUS_ENABLED 0x0001
+#define AUDIT_STATUS_FAILURE 0x0002
+#define AUDIT_STATUS_PID 0x0004
+#define AUDIT_STATUS_RATE_LIMIT 0x0008
+#define AUDIT_STATUS_BACKLOG_LIMIT 0x0010
+ /* Failure-to-log actions */
+#define AUDIT_FAIL_SILENT 0
+#define AUDIT_FAIL_PRINTK 1
+#define AUDIT_FAIL_PANIC 2
+
+#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 failure; /* Failure-to-log action */
+ __u32 pid; /* pid of auditd process */
+ __u32 rate_limit; /* messages rate limit (per second) */
+ __u32 backlog_limit; /* waiting messages limit */
+ __u32 lost; /* messages lost */
+ __u32 backlog; /* messages waiting in queue */
+};
+
+struct audit_login {
+ __u32 loginuid;
+ int msglen;
+ char msg[1024];
+};
+
+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 */
+ __u32 field_count;
+ __u32 mask[AUDIT_BITMASK_SIZE];
+ __u32 fields[AUDIT_MAX_FIELDS];
+ __u32 values[AUDIT_MAX_FIELDS];
+};
+
+#ifdef __KERNEL__
+
+#ifdef CONFIG_AUDIT
+struct audit_buffer;
+struct audit_context;
+#endif
+
+#ifdef CONFIG_AUDITSYSCALL
+/* 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(struct task_struct *task,
+ int major, unsigned long a0, unsigned long a1,
+ unsigned long a2, unsigned long a3);
+extern void audit_syscall_exit(struct task_struct *task, int return_code);
+extern void audit_getname(const char *name);
+extern void audit_putname(const char *name);
+extern void audit_inode(const char *name, unsigned long ino, dev_t rdev);
+
+ /* 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, int *serial);
+extern int audit_set_loginuid(struct audit_context *ctx, uid_t loginuid);
+#else
+#define audit_alloc(t) ({ 0; })
+#define audit_free(t) do { ; } while (0)
+#define audit_syscall_entry(t,a,b,c,d,e) do { ; } while (0)
+#define audit_syscall_exit(t,r) do { ; } while (0)
+#define audit_getname(n) do { ; } while (0)
+#define audit_putname(n) do { ; } while (0)
+#define audit_inode(n,i,d) 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 struct audit_buffer *audit_log_start(struct audit_context *ctx);
+extern void audit_log_format(struct audit_buffer *ab,
+ const char *fmt, ...)
+ __attribute__((format(printf,2,3)));
+extern void audit_log_end(struct audit_buffer *ab);
+extern void audit_log_end_fast(struct audit_buffer *ab);
+extern void audit_log_end_irq(struct audit_buffer *ab);
+extern void audit_log_d_path(struct audit_buffer *ab,
+ const char *prefix,
+ struct dentry *dentry,
+ struct vfsmount *vfsmnt);
+extern int audit_set_rate_limit(int limit);
+extern int audit_set_backlog_limit(int limit);
+extern int audit_set_enabled(int state);
+extern int audit_set_failure(int state);
+
+ /* 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);
+#else
+#define audit_log(t,f,...) do { ; } while (0)
+#define audit_log_start(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_end_fast(b) do { ; } while (0)
+#define audit_log_end_irq(b) do { ; } while (0)
+#define audit_log_d_path(b,p,d,v) do { ; } while (0)
+#define audit_set_rate_limit(l) do { ; } while (0)
+#define audit_set_backlog_limit(l) do { ; } while (0)
+#define audit_set_enabled(s) do { ; } while (0)
+#define audit_set_failure(s) do { ; } while (0)
+#endif
+#endif
+#endif
diff --git a/include/linux/fs.h b/include/linux/fs.h
index bacf6bcbc7b7..39c893f8aa28 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -20,6 +20,7 @@
#include <linux/radix-tree.h>
#include <linux/kobject.h>
#include <asm/atomic.h>
+#include <linux/audit.h>
struct iovec;
struct nameidata;
@@ -1159,7 +1160,18 @@ extern char * getname(const char __user *);
extern void vfs_caches_init(unsigned long);
#define __getname() kmem_cache_alloc(names_cachep, SLAB_KERNEL)
-#define putname(name) kmem_cache_free(names_cachep, (void *)(name))
+#define __putname(name) kmem_cache_free(names_cachep, (void *)(name))
+#ifndef CONFIG_AUDITSYSCALL
+#define putname(name) __putname(name)
+#else
+#define putname(name) \
+ do { \
+ if (unlikely(current->audit_context)) \
+ audit_putname(name); \
+ else \
+ __putname(name); \
+ } while (0)
+#endif
extern int register_blkdev(unsigned int, const char *);
extern int unregister_blkdev(unsigned int, const char *);
diff --git a/include/linux/netlink.h b/include/linux/netlink.h
index e5e15ddadab5..5adca479de6e 100644
--- a/include/linux/netlink.h
+++ b/include/linux/netlink.h
@@ -13,6 +13,7 @@
#define NETLINK_XFRM 6 /* ipsec */
#define NETLINK_SELINUX 7 /* SELinux event notifications */
#define NETLINK_ARPD 8
+#define NETLINK_AUDIT 9 /* auditing */
#define NETLINK_ROUTE6 11 /* af_inet6 route comm channel */
#define NETLINK_IP6_FW 13
#define NETLINK_DNRTMSG 14 /* DECnet routing messages */
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 22080f919266..b72c38420d71 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -371,6 +371,8 @@ int set_current_groups(struct group_info *group_info);
((gi)->blocks[(i)/NGROUPS_PER_BLOCK][(i)%NGROUPS_PER_BLOCK])
+struct audit_context; /* See audit.c */
+
struct task_struct {
volatile long state; /* -1 unrunnable, 0 runnable, >0 stopped */
struct thread_info *thread_info;
@@ -474,6 +476,7 @@ struct task_struct {
sigset_t *notifier_mask;
void *security;
+ struct audit_context *audit_context;
/* Thread group tracking */
u32 parent_exec_id;
generated by cgit v1.2.3 (git 2.46.0) at 2026-01-27 10:17:49 +0000