| 1 | /* audit.h -- Auditing support |
|---|
| 2 | * |
|---|
| 3 | * Copyright 2003-2004 Red Hat Inc., Durham, North Carolina. |
|---|
| 4 | * All Rights Reserved. |
|---|
| 5 | * |
|---|
| 6 | * This program is free software; you can redistribute it and/or modify |
|---|
| 7 | * it under the terms of the GNU General Public License as published by |
|---|
| 8 | * the Free Software Foundation; either version 2 of the License, or |
|---|
| 9 | * (at your option) any later version. |
|---|
| 10 | * |
|---|
| 11 | * This program is distributed in the hope that it will be useful, |
|---|
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
|---|
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|---|
| 14 | * GNU General Public License for more details. |
|---|
| 15 | * |
|---|
| 16 | * You should have received a copy of the GNU General Public License |
|---|
| 17 | * along with this program; if not, write to the Free Software |
|---|
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
|---|
| 19 | * |
|---|
| 20 | * Written by Rickard E. (Rik) Faith <faith@redhat.com> |
|---|
| 21 | * |
|---|
| 22 | */ |
|---|
| 23 | |
|---|
| 24 | #ifndef _LINUX_AUDIT_H_ |
|---|
| 25 | #define _LINUX_AUDIT_H_ |
|---|
| 26 | |
|---|
| 27 | #include <asm/types.h> |
|---|
| 28 | #include <linux/netlink.h> |
|---|
| 29 | |
|---|
| 30 | #include <linux/sched.h> |
|---|
| 31 | #include <linux/elf.h> |
|---|
| 32 | |
|---|
| 33 | /* Request and reply types */ |
|---|
| 34 | #define AUDIT_GET 1000 /* Get status */ |
|---|
| 35 | #define AUDIT_SET 1001 /* Set status (enable/disable/auditd) */ |
|---|
| 36 | #define AUDIT_LIST 1002 /* List filtering rules */ |
|---|
| 37 | #define AUDIT_ADD 1003 /* Add filtering rule */ |
|---|
| 38 | #define AUDIT_DEL 1004 /* Delete filtering rule */ |
|---|
| 39 | #define AUDIT_USER 1005 /* Send a message from user-space */ |
|---|
| 40 | #define AUDIT_LOGIN 1006 /* Define the login id and informaiton */ |
|---|
| 41 | #define AUDIT_KERNEL 2000 /* Asynchronous audit record. NOT A REQUEST. */ |
|---|
| 42 | |
|---|
| 43 | /* Rule flags */ |
|---|
| 44 | #define AUDIT_PER_TASK 0x01 /* Apply rule at task creation (not syscall) */ |
|---|
| 45 | #define AUDIT_AT_ENTRY 0x02 /* Apply rule at syscall entry */ |
|---|
| 46 | #define AUDIT_AT_EXIT 0x04 /* Apply rule at syscall exit */ |
|---|
| 47 | #define AUDIT_PREPEND 0x10 /* Prepend to front of list */ |
|---|
| 48 | |
|---|
| 49 | /* Rule actions */ |
|---|
| 50 | #define AUDIT_NEVER 0 /* Do not build context if rule matches */ |
|---|
| 51 | #define AUDIT_POSSIBLE 1 /* Build context if rule matches */ |
|---|
| 52 | #define AUDIT_ALWAYS 2 /* Generate audit record if rule matches */ |
|---|
| 53 | |
|---|
| 54 | /* Rule structure sizes -- if these change, different AUDIT_ADD and |
|---|
| 55 | * AUDIT_LIST commands must be implemented. */ |
|---|
| 56 | #define AUDIT_MAX_FIELDS 64 |
|---|
| 57 | #define AUDIT_BITMASK_SIZE 64 |
|---|
| 58 | #define AUDIT_WORD(nr) ((__u32)((nr)/32)) |
|---|
| 59 | #define AUDIT_BIT(nr) (1 << ((nr) - AUDIT_WORD(nr)*32)) |
|---|
| 60 | |
|---|
| 61 | /* Rule fields */ |
|---|
| 62 | /* These are useful when checking the |
|---|
| 63 | * task structure at task creation time |
|---|
| 64 | * (AUDIT_PER_TASK). */ |
|---|
| 65 | #define AUDIT_PID 0 |
|---|
| 66 | #define AUDIT_UID 1 |
|---|
| 67 | #define AUDIT_EUID 2 |
|---|
| 68 | #define AUDIT_SUID 3 |
|---|
| 69 | #define AUDIT_FSUID 4 |
|---|
| 70 | #define AUDIT_GID 5 |
|---|
| 71 | #define AUDIT_EGID 6 |
|---|
| 72 | #define AUDIT_SGID 7 |
|---|
| 73 | #define AUDIT_FSGID 8 |
|---|
| 74 | #define AUDIT_LOGINUID 9 |
|---|
| 75 | #define AUDIT_PERS 10 |
|---|
| 76 | #define AUDIT_ARCH 11 |
|---|
| 77 | |
|---|
| 78 | /* These are ONLY useful when checking |
|---|
| 79 | * at syscall exit time (AUDIT_AT_EXIT). */ |
|---|
| 80 | #define AUDIT_DEVMAJOR 100 |
|---|
| 81 | #define AUDIT_DEVMINOR 101 |
|---|
| 82 | #define AUDIT_INODE 102 |
|---|
| 83 | #define AUDIT_EXIT 103 |
|---|
| 84 | #define AUDIT_SUCCESS 104 /* exit >= 0; value ignored */ |
|---|
| 85 | |
|---|
| 86 | #define AUDIT_ARG0 200 |
|---|
| 87 | #define AUDIT_ARG1 (AUDIT_ARG0+1) |
|---|
| 88 | #define AUDIT_ARG2 (AUDIT_ARG0+2) |
|---|
| 89 | #define AUDIT_ARG3 (AUDIT_ARG0+3) |
|---|
| 90 | |
|---|
| 91 | #define AUDIT_NEGATE 0x80000000 |
|---|
| 92 | |
|---|
| 93 | |
|---|
| 94 | /* Status symbols */ |
|---|
| 95 | /* Mask values */ |
|---|
| 96 | #define AUDIT_STATUS_ENABLED 0x0001 |
|---|
| 97 | #define AUDIT_STATUS_FAILURE 0x0002 |
|---|
| 98 | #define AUDIT_STATUS_PID 0x0004 |
|---|
| 99 | #define AUDIT_STATUS_RATE_LIMIT 0x0008 |
|---|
| 100 | #define AUDIT_STATUS_BACKLOG_LIMIT 0x0010 |
|---|
| 101 | /* Failure-to-log actions */ |
|---|
| 102 | #define AUDIT_FAIL_SILENT 0 |
|---|
| 103 | #define AUDIT_FAIL_PRINTK 1 |
|---|
| 104 | #define AUDIT_FAIL_PANIC 2 |
|---|
| 105 | |
|---|
| 106 | /* distinguish syscall tables */ |
|---|
| 107 | #define __AUDIT_ARCH_64BIT 0x80000000 |
|---|
| 108 | #define __AUDIT_ARCH_LE 0x40000000 |
|---|
| 109 | #define AUDIT_ARCH_ALPHA (EM_ALPHA|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) |
|---|
| 110 | #define AUDIT_ARCH_ARM (EM_ARM|__AUDIT_ARCH_LE) |
|---|
| 111 | #define AUDIT_ARCH_ARMEB (EM_ARM) |
|---|
| 112 | #define AUDIT_ARCH_CRIS (EM_CRIS|__AUDIT_ARCH_LE) |
|---|
| 113 | #define AUDIT_ARCH_FRV (EM_FRV) |
|---|
| 114 | #define AUDIT_ARCH_H8300 (EM_H8_300) |
|---|
| 115 | #define AUDIT_ARCH_I386 (EM_386|__AUDIT_ARCH_LE) |
|---|
| 116 | #define AUDIT_ARCH_IA64 (EM_IA_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) |
|---|
| 117 | #define AUDIT_ARCH_M32R (EM_M32R) |
|---|
| 118 | #define AUDIT_ARCH_M68K (EM_68K) |
|---|
| 119 | #define AUDIT_ARCH_MIPS (EM_MIPS) |
|---|
| 120 | #define AUDIT_ARCH_MIPSEL (EM_MIPS|__AUDIT_ARCH_LE) |
|---|
| 121 | #define AUDIT_ARCH_MIPS64 (EM_MIPS|__AUDIT_ARCH_64BIT) |
|---|
| 122 | #define AUDIT_ARCH_MIPSEL64 (EM_MIPS|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) |
|---|
| 123 | #define AUDIT_ARCH_PARISC (EM_PARISC) |
|---|
| 124 | #define AUDIT_ARCH_PARISC64 (EM_PARISC|__AUDIT_ARCH_64BIT) |
|---|
| 125 | #define AUDIT_ARCH_PPC (EM_PPC) |
|---|
| 126 | #define AUDIT_ARCH_PPC64 (EM_PPC64|__AUDIT_ARCH_64BIT) |
|---|
| 127 | #define AUDIT_ARCH_S390 (EM_S390) |
|---|
| 128 | #define AUDIT_ARCH_S390X (EM_S390|__AUDIT_ARCH_64BIT) |
|---|
| 129 | #define AUDIT_ARCH_SH (EM_SH) |
|---|
| 130 | #define AUDIT_ARCH_SHEL (EM_SH|__AUDIT_ARCH_LE) |
|---|
| 131 | #define AUDIT_ARCH_SH64 (EM_SH|__AUDIT_ARCH_64BIT) |
|---|
| 132 | #define AUDIT_ARCH_SHEL64 (EM_SH|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) |
|---|
| 133 | #define AUDIT_ARCH_SPARC (EM_SPARC) |
|---|
| 134 | #define AUDIT_ARCH_SPARC64 (EM_SPARC64|__AUDIT_ARCH_64BIT) |
|---|
| 135 | #define AUDIT_ARCH_V850 (EM_V850|__AUDIT_ARCH_LE) |
|---|
| 136 | #define AUDIT_ARCH_X86_64 (EM_X86_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE) |
|---|
| 137 | |
|---|
| 138 | struct audit_message { |
|---|
| 139 | struct nlmsghdr nlh; |
|---|
| 140 | char data[1200]; |
|---|
| 141 | }; |
|---|
| 142 | |
|---|
| 143 | struct audit_status { |
|---|
| 144 | __u32 mask; /* Bit mask for valid entries */ |
|---|
| 145 | __u32 enabled; /* 1 = enabled, 0 = disbaled */ |
|---|
| 146 | __u32 failure; /* Failure-to-log action */ |
|---|
| 147 | __u32 pid; /* pid of auditd process */ |
|---|
| 148 | __u32 rate_limit; /* messages rate limit (per second) */ |
|---|
| 149 | __u32 backlog_limit; /* waiting messages limit */ |
|---|
| 150 | __u32 lost; /* messages lost */ |
|---|
| 151 | __u32 backlog; /* messages waiting in queue */ |
|---|
| 152 | }; |
|---|
| 153 | |
|---|
| 154 | struct audit_rule { /* for AUDIT_LIST, AUDIT_ADD, and AUDIT_DEL */ |
|---|
| 155 | __u32 flags; /* AUDIT_PER_{TASK,CALL}, AUDIT_PREPEND */ |
|---|
| 156 | __u32 action; /* AUDIT_NEVER, AUDIT_POSSIBLE, AUDIT_ALWAYS */ |
|---|
| 157 | __u32 field_count; |
|---|
| 158 | __u32 mask[AUDIT_BITMASK_SIZE]; |
|---|
| 159 | __u32 fields[AUDIT_MAX_FIELDS]; |
|---|
| 160 | __u32 values[AUDIT_MAX_FIELDS]; |
|---|
| 161 | }; |
|---|
| 162 | |
|---|
| 163 | #endif |
|---|