The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/security/audit/audit.h

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    1 /*-
    2  * Copyright (c) 1999-2005 Apple 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 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: releng/7.3/sys/security/audit/audit.h 189890 2009-03-16 17:25:09Z rwatson $
   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 _SECURITY_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 can be
   52  * observed but should not be directly manipulated.  The audit suspension
   53  * flag permits audit to be temporarily disabled without reconfiguring the
   54  * 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_TERMID_ADDR         0x0000000000400000ULL
   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_IOVECSTR            0x0000800000000000ULL
  115 #define ARG_ARGV                0x0001000000000000ULL
  116 #define ARG_ENVV                0x0002000000000000ULL
  117 #define ARG_NONE                0x0000000000000000ULL
  118 #define ARG_ALL                 0xFFFFFFFFFFFFFFFFULL
  119 
  120 void     audit_syscall_enter(unsigned short code, struct thread *td);
  121 void     audit_syscall_exit(int error, struct thread *td);
  122 
  123 /*
  124  * The remaining kernel functions are conditionally compiled in as they are
  125  * wrapped by a macro, and the macro should be the only place in the source
  126  * tree where these functions are referenced.
  127  */
  128 #ifdef AUDIT
  129 struct ipc_perm;
  130 struct sockaddr;
  131 union auditon_udata;
  132 void     audit_arg_addr(void * addr);
  133 void     audit_arg_exit(int status, int retval);
  134 void     audit_arg_len(int len);
  135 void     audit_arg_fd(int fd);
  136 void     audit_arg_fflags(int fflags);
  137 void     audit_arg_gid(gid_t gid);
  138 void     audit_arg_uid(uid_t uid);
  139 void     audit_arg_egid(gid_t egid);
  140 void     audit_arg_euid(uid_t euid);
  141 void     audit_arg_rgid(gid_t rgid);
  142 void     audit_arg_ruid(uid_t ruid);
  143 void     audit_arg_sgid(gid_t sgid);
  144 void     audit_arg_suid(uid_t suid);
  145 void     audit_arg_groupset(gid_t *gidset, u_int gidset_size);
  146 void     audit_arg_login(char *login);
  147 void     audit_arg_ctlname(int *name, int namelen);
  148 void     audit_arg_mask(int mask);
  149 void     audit_arg_mode(mode_t mode);
  150 void     audit_arg_dev(int dev);
  151 void     audit_arg_value(long value);
  152 void     audit_arg_owner(uid_t uid, gid_t gid);
  153 void     audit_arg_pid(pid_t pid);
  154 void     audit_arg_process(struct proc *p);
  155 void     audit_arg_signum(u_int signum);
  156 void     audit_arg_socket(int sodomain, int sotype, int soprotocol);
  157 void     audit_arg_sockaddr(struct thread *td, struct sockaddr *sa);
  158 void     audit_arg_auid(uid_t auid);
  159 void     audit_arg_auditinfo(struct auditinfo *au_info);
  160 void     audit_arg_auditinfo_addr(struct auditinfo_addr *au_info);
  161 void     audit_arg_upath(struct thread *td, char *upath, 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, mode_t mode);
  170 void     audit_arg_auditon(union auditon_udata *udata);
  171 void     audit_arg_file(struct proc *p, struct file *fp);
  172 void     audit_arg_argv(char *argv, int argc, int length);
  173 void     audit_arg_envv(char *envv, int envc, int length);
  174 void     audit_sysclose(struct thread *td, int fd);
  175 void     audit_cred_copy(struct ucred *src, struct ucred *dest);
  176 void     audit_cred_destroy(struct ucred *cred);
  177 void     audit_cred_init(struct ucred *cred);
  178 void     audit_cred_kproc0(struct ucred *cred);
  179 void     audit_cred_proc1(struct ucred *cred);
  180 void     audit_proc_coredump(struct thread *td, char *path, int errcode);
  181 void     audit_thread_alloc(struct thread *td);
  182 void     audit_thread_free(struct thread *td);
  183 
  184 /*
  185  * Define a macro to wrap the audit_arg_* calls by checking the global
  186  * audit_enabled flag before performing the actual call.
  187  */
  188 #define AUDIT_ARG(op, args...)  do {                                    \
  189         if (td->td_pflags & TDP_AUDITREC)                               \
  190                 audit_arg_ ## op (args);                                \
  191 } while (0)
  192 
  193 #define AUDIT_SYSCALL_ENTER(code, td)   do {                            \
  194         if (audit_enabled) {                                            \
  195                 audit_syscall_enter(code, td);                          \
  196         }                                                               \
  197 } while (0)
  198 
  199 /*
  200  * Wrap the audit_syscall_exit() function so that it is called only when
  201  * we have a audit record on the thread.  Audit records can persist after
  202  * auditing is disabled, so we don't just check audit_enabled here.
  203  */
  204 #define AUDIT_SYSCALL_EXIT(error, td)   do {                            \
  205         if (td->td_pflags & TDP_AUDITREC)                               \
  206                 audit_syscall_exit(error, td);                          \
  207 } while (0)
  208 
  209 /*
  210  * A Macro to wrap the audit_sysclose() function.
  211  */
  212 #define AUDIT_SYSCLOSE(td, fd)  do {                                    \
  213         if (td->td_pflags & TDP_AUDITREC)                               \
  214                 audit_sysclose(td, fd);                                 \
  215 } while (0)
  216 
  217 #else /* !AUDIT */
  218 
  219 #define AUDIT_ARG(op, args...)  do {                                    \
  220 } while (0)
  221 
  222 #define AUDIT_SYSCALL_ENTER(code, td)   do {                            \
  223 } while (0)
  224 
  225 #define AUDIT_SYSCALL_EXIT(error, td)   do {                            \
  226 } while (0)
  227 
  228 #define AUDIT_SYSCLOSE(p, fd)   do {                                    \
  229 } while (0)
  230 
  231 #endif /* AUDIT */
  232 
  233 #endif /* !_SECURITY_AUDIT_KERNEL_H_ */

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