1 /* 2 * Copyright (c) 1999-2005 Apple Computer, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 14 * its contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR 21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 26 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 /* 33 * This header includes function prototypes and type definitions that are 34 * necessary for the kernel as a whole to interact with the audit subsystem. 35 */ 36 37 #ifndef _SECURITY_AUDIT_KERNEL_H_ 38 #define _SEUCRITY_AUDIT_KERNEL_H_ 39 40 #ifndef _KERNEL 41 #error "no user-serviceable parts inside" 42 #endif 43 44 #include <bsm/audit.h> 45 46 #include <sys/file.h> 47 #include <sys/sysctl.h> 48 49 /* 50 * Audit subsystem condition flags. The audit_enabled flag is set and 51 * removed automatically as a result of configuring log files, and 52 * can be observed but should not be directly manipulated. The audit 53 * suspension flag permits audit to be temporarily disabled without 54 * reconfiguring the audit target. 55 */ 56 extern int audit_enabled; 57 extern int audit_suspended; 58 59 /* 60 * Define the masks for the audited arguments. 61 * 62 * XXXRW: These need to remain in audit.h for now because our vnode and name 63 * lookup audit calls rely on passing in flags to indicate which name or 64 * vnode is being logged. These should move to audit_private.h when that is 65 * fixed. 66 */ 67 #define ARG_EUID 0x0000000000000001ULL 68 #define ARG_RUID 0x0000000000000002ULL 69 #define ARG_SUID 0x0000000000000004ULL 70 #define ARG_EGID 0x0000000000000008ULL 71 #define ARG_RGID 0x0000000000000010ULL 72 #define ARG_SGID 0x0000000000000020ULL 73 #define ARG_PID 0x0000000000000040ULL 74 #define ARG_UID 0x0000000000000080ULL 75 #define ARG_AUID 0x0000000000000100ULL 76 #define ARG_GID 0x0000000000000200ULL 77 #define ARG_FD 0x0000000000000400ULL 78 #define ARG_POSIX_IPC_PERM 0x0000000000000800ULL 79 #define ARG_FFLAGS 0x0000000000001000ULL 80 #define ARG_MODE 0x0000000000002000ULL 81 #define ARG_DEV 0x0000000000004000ULL 82 #define ARG_ADDR 0x0000000000008000ULL 83 #define ARG_LEN 0x0000000000010000ULL 84 #define ARG_MASK 0x0000000000020000ULL 85 #define ARG_SIGNUM 0x0000000000040000ULL 86 #define ARG_LOGIN 0x0000000000080000ULL 87 #define ARG_SADDRINET 0x0000000000100000ULL 88 #define ARG_SADDRINET6 0x0000000000200000ULL 89 #define ARG_SADDRUNIX 0x0000000000400000ULL 90 #define ARG_UNUSED1 0x0000000000800000ULL 91 #define ARG_UNUSED2 0x0000000001000000ULL 92 #define ARG_UPATH1 0x0000000002000000ULL 93 #define ARG_UPATH2 0x0000000004000000ULL 94 #define ARG_TEXT 0x0000000008000000ULL 95 #define ARG_VNODE1 0x0000000010000000ULL 96 #define ARG_VNODE2 0x0000000020000000ULL 97 #define ARG_SVIPC_CMD 0x0000000040000000ULL 98 #define ARG_SVIPC_PERM 0x0000000080000000ULL 99 #define ARG_SVIPC_ID 0x0000000100000000ULL 100 #define ARG_SVIPC_ADDR 0x0000000200000000ULL 101 #define ARG_GROUPSET 0x0000000400000000ULL 102 #define ARG_CMD 0x0000000800000000ULL 103 #define ARG_SOCKINFO 0x0000001000000000ULL 104 #define ARG_ASID 0x0000002000000000ULL 105 #define ARG_TERMID 0x0000004000000000ULL 106 #define ARG_AUDITON 0x0000008000000000ULL 107 #define ARG_VALUE 0x0000010000000000ULL 108 #define ARG_AMASK 0x0000020000000000ULL 109 #define ARG_CTLNAME 0x0000040000000000ULL 110 #define ARG_PROCESS 0x0000080000000000ULL 111 #define ARG_MACHPORT1 0x0000100000000000ULL 112 #define ARG_MACHPORT2 0x0000200000000000ULL 113 #define ARG_EXIT 0x0000400000000000ULL 114 #define ARG_NONE 0x0000000000000000ULL 115 #define ARG_ALL 0xFFFFFFFFFFFFFFFFULL 116 117 void audit_syscall_enter(unsigned short code, 118 struct thread *td); 119 void audit_syscall_exit(int error, struct thread *td); 120 121 /* 122 * The remaining kernel functions are conditionally compiled in as they 123 * are wrapped by a macro, and the macro should be the only place in 124 * the source tree where these functions are referenced. 125 */ 126 #ifdef AUDIT 127 struct ipc_perm; 128 struct sockaddr; 129 union auditon_udata; 130 void audit_arg_addr(void * addr); 131 void audit_arg_exit(int status, int retval); 132 void audit_arg_len(int len); 133 void audit_arg_fd(int fd); 134 void audit_arg_fflags(int fflags); 135 void audit_arg_gid(gid_t gid); 136 void audit_arg_uid(uid_t uid); 137 void audit_arg_egid(gid_t egid); 138 void audit_arg_euid(uid_t euid); 139 void audit_arg_rgid(gid_t rgid); 140 void audit_arg_ruid(uid_t ruid); 141 void audit_arg_sgid(gid_t sgid); 142 void audit_arg_suid(uid_t suid); 143 void audit_arg_groupset(gid_t *gidset, u_int gidset_size); 144 void audit_arg_login(char *login); 145 void audit_arg_ctlname(int *name, int namelen); 146 void audit_arg_mask(int mask); 147 void audit_arg_mode(mode_t mode); 148 void audit_arg_dev(int dev); 149 void audit_arg_value(long value); 150 void audit_arg_owner(uid_t uid, gid_t gid); 151 void audit_arg_pid(pid_t pid); 152 void audit_arg_process(struct proc *p); 153 void audit_arg_signum(u_int signum); 154 void audit_arg_socket(int sodomain, int sotype, 155 int soprotocol); 156 void audit_arg_sockaddr(struct thread *td, 157 struct sockaddr *so); 158 void audit_arg_auid(uid_t auid); 159 void audit_arg_auditinfo(struct auditinfo *au_info); 160 void audit_arg_upath(struct thread *td, char *upath, 161 u_int64_t flags); 162 void audit_arg_vnode(struct vnode *vp, u_int64_t flags); 163 void audit_arg_text(char *text); 164 void audit_arg_cmd(int cmd); 165 void audit_arg_svipc_cmd(int cmd); 166 void audit_arg_svipc_perm(struct ipc_perm *perm); 167 void audit_arg_svipc_id(int id); 168 void audit_arg_svipc_addr(void *addr); 169 void audit_arg_posix_ipc_perm(uid_t uid, gid_t gid, 170 mode_t mode); 171 void audit_arg_auditon(union auditon_udata *udata); 172 void audit_arg_file(struct proc *p, struct file *fp); 173 174 void audit_sysclose(struct thread *td, int fd); 175 176 void audit_proc_alloc(struct proc *p); 177 void audit_proc_kproc0(struct proc *p); 178 void audit_proc_init(struct proc *p); 179 void audit_proc_fork(struct proc *parent, 180 struct proc *child); 181 void audit_proc_free(struct proc *p); 182 void audit_thread_alloc(struct thread *td); 183 void audit_thread_free(struct thread *td); 184 185 /* 186 * Define a macro to wrap the audit_arg_* calls by checking the global 187 * audit_enabled flag before performing the actual call. 188 */ 189 #define AUDIT_ARG(op, args...) do { \ 190 if (audit_enabled) \ 191 audit_arg_ ## op (args); \ 192 } while (0) 193 194 #define AUDIT_SYSCALL_ENTER(code, td) do { \ 195 if (audit_enabled) { \ 196 audit_syscall_enter(code, td); \ 197 } \ 198 } while (0) 199 200 /* 201 * Wrap the audit_syscall_exit() function so that it is called only when 202 * auditing is enabled, or we have a audit record on the thread. It is 203 * possible that an audit record was begun before auditing was turned off. 204 */ 205 #define AUDIT_SYSCALL_EXIT(error, td) do { \ 206 if (audit_enabled | (td->td_ar != NULL)) \ 207 audit_syscall_exit(error, td); \ 208 } while (0) 209 210 /* 211 * A Macro to wrap the audit_sysclose() function. 212 */ 213 #define AUDIT_SYSCLOSE(td, fd) do { \ 214 if (audit_enabled) \ 215 audit_sysclose(td, fd); \ 216 } while (0) 217 218 #else /* !AUDIT */ 219 220 void audit_proc_init(struct proc *p); 221 void audit_proc_fork(struct proc *parent, 222 struct proc *child); 223 void audit_proc_free(struct proc *p); 224 225 #define AUDIT_ARG(op, args...) do { \ 226 } while (0) 227 228 #define AUDIT_SYSCALL_ENTER(code, td) do { \ 229 } while (0) 230 231 #define AUDIT_SYSCALL_EXIT(error, td) do { \ 232 } while (0) 233 234 #define AUDIT_SYSCLOSE(p, fd) do { \ 235 } while (0) 236 237 #endif /* AUDIT */ 238 239 #endif /* !_SECURITY_AUDIT_KERNEL_H_ */ 240