| /* 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_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); |
| extern uid_t audit_get_loginuid(struct audit_context *ctx); |
| #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) |
| #define audit_get_loginuid(c) ({ -1; }) |
| #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 |
