1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * AppArmor security module 4 * 5 * This file contains AppArmor auditing function definitions. 6 * 7 * Copyright (C) 1998-2008 Novell/SUSE 8 * Copyright 2009-2010 Canonical Ltd. 9 */ 10 11 #ifndef __AA_AUDIT_H 12 #define __AA_AUDIT_H 13 14 #include <linux/audit.h> 15 #include <linux/fs.h> 16 #include <linux/lsm_audit.h> 17 #include <linux/sched.h> 18 #include <linux/slab.h> 19 20 #include "file.h" 21 #include "label.h" 22 23 extern const char *const audit_mode_names[]; 24 #define AUDIT_MAX_INDEX 5 25 enum audit_mode { 26 AUDIT_NORMAL, /* follow normal auditing of accesses */ 27 AUDIT_QUIET_DENIED, /* quiet all denied access messages */ 28 AUDIT_QUIET, /* quiet all messages */ 29 AUDIT_NOQUIET, /* do not quiet audit messages */ 30 AUDIT_ALL /* audit all accesses */ 31 }; 32 33 enum audit_type { 34 AUDIT_APPARMOR_AUDIT, 35 AUDIT_APPARMOR_ALLOWED, 36 AUDIT_APPARMOR_DENIED, 37 AUDIT_APPARMOR_HINT, 38 AUDIT_APPARMOR_STATUS, 39 AUDIT_APPARMOR_ERROR, 40 AUDIT_APPARMOR_KILL, 41 AUDIT_APPARMOR_AUTO 42 }; 43 44 #define OP_NULL NULL 45 46 #define OP_SYSCTL "sysctl" 47 #define OP_CAPABLE "capable" 48 49 #define OP_UNLINK "unlink" 50 #define OP_MKDIR "mkdir" 51 #define OP_RMDIR "rmdir" 52 #define OP_MKNOD "mknod" 53 #define OP_TRUNC "truncate" 54 #define OP_LINK "link" 55 #define OP_SYMLINK "symlink" 56 #define OP_RENAME_SRC "rename_src" 57 #define OP_RENAME_DEST "rename_dest" 58 #define OP_CHMOD "chmod" 59 #define OP_CHOWN "chown" 60 #define OP_GETATTR "getattr" 61 #define OP_OPEN "open" 62 63 #define OP_FRECEIVE "file_receive" 64 #define OP_FPERM "file_perm" 65 #define OP_FLOCK "file_lock" 66 #define OP_FMMAP "file_mmap" 67 #define OP_FMPROT "file_mprotect" 68 #define OP_INHERIT "file_inherit" 69 70 #define OP_PIVOTROOT "pivotroot" 71 #define OP_MOUNT "mount" 72 #define OP_UMOUNT "umount" 73 74 #define OP_CREATE "create" 75 #define OP_POST_CREATE "post_create" 76 #define OP_BIND "bind" 77 #define OP_CONNECT "connect" 78 #define OP_LISTEN "listen" 79 #define OP_ACCEPT "accept" 80 #define OP_SENDMSG "sendmsg" 81 #define OP_RECVMSG "recvmsg" 82 #define OP_GETSOCKNAME "getsockname" 83 #define OP_GETPEERNAME "getpeername" 84 #define OP_GETSOCKOPT "getsockopt" 85 #define OP_SETSOCKOPT "setsockopt" 86 #define OP_SHUTDOWN "socket_shutdown" 87 88 #define OP_PTRACE "ptrace" 89 #define OP_SIGNAL "signal" 90 91 #define OP_EXEC "exec" 92 93 #define OP_CHANGE_HAT "change_hat" 94 #define OP_CHANGE_PROFILE "change_profile" 95 #define OP_CHANGE_ONEXEC "change_onexec" 96 #define OP_STACK "stack" 97 #define OP_STACK_ONEXEC "stack_onexec" 98 99 #define OP_SETPROCATTR "setprocattr" 100 #define OP_SETRLIMIT "setrlimit" 101 102 #define OP_PROF_REPL "profile_replace" 103 #define OP_PROF_LOAD "profile_load" 104 #define OP_PROF_RM "profile_remove" 105 106 107 struct apparmor_audit_data { 108 int error; 109 int type; 110 const char *op; 111 struct aa_label *label; 112 const char *name; 113 const char *info; 114 u32 request; 115 u32 denied; 116 union { 117 /* these entries require a custom callback fn */ 118 struct { 119 struct aa_label *peer; 120 union { 121 struct { 122 const char *target; 123 kuid_t ouid; 124 } fs; 125 struct { 126 int rlim; 127 unsigned long max; 128 } rlim; 129 struct { 130 int signal; 131 int unmappedsig; 132 }; 133 struct { 134 int type, protocol; 135 struct sock *peer_sk; 136 void *addr; 137 int addrlen; 138 } net; 139 }; 140 }; 141 struct { 142 struct aa_profile *profile; 143 const char *ns; 144 long pos; 145 } iface; 146 struct { 147 const char *src_name; 148 const char *type; 149 const char *trans; 150 const char *data; 151 unsigned long flags; 152 } mnt; 153 }; 154 }; 155 156 /* macros for dealing with apparmor_audit_data structure */ 157 #define aad(SA) ((SA)->apparmor_audit_data) 158 #define DEFINE_AUDIT_DATA(NAME, T, X) \ 159 /* TODO: cleanup audit init so we don't need _aad = {0,} */ \ 160 struct apparmor_audit_data NAME ## _aad = { .op = (X), }; \ 161 struct common_audit_data NAME = \ 162 { \ 163 .type = (T), \ 164 .u.tsk = NULL, \ 165 }; \ 166 NAME.apparmor_audit_data = &(NAME ## _aad) 167 168 void aa_audit_msg(int type, struct common_audit_data *sa, 169 void (*cb) (struct audit_buffer *, void *)); 170 int aa_audit(int type, struct aa_profile *profile, struct common_audit_data *sa, 171 void (*cb) (struct audit_buffer *, void *)); 172 173 #define aa_audit_error(ERROR, SA, CB) \ 174 ({ \ 175 aad((SA))->error = (ERROR); \ 176 aa_audit_msg(AUDIT_APPARMOR_ERROR, (SA), (CB)); \ 177 aad((SA))->error; \ 178 }) 179 180 181 static inline int complain_error(int error) 182 { 183 if (error == -EPERM || error == -EACCES) 184 return 0; 185 return error; 186 } 187 188 void aa_audit_rule_free(void *vrule); 189 int aa_audit_rule_init(u32 field, u32 op, char *rulestr, void **vrule); 190 int aa_audit_rule_known(struct audit_krule *rule); 191 int aa_audit_rule_match(u32 sid, u32 field, u32 op, void *vrule); 192 193 #endif /* __AA_AUDIT_H */ 194