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/*-
* Copyright (c) 1999-2005 Apple Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* This header includes function prototypes and type definitions that are
* necessary for the kernel as a whole to interact with the audit subsystem.
*/
#ifndef _SECURITY_AUDIT_KERNEL_H_
#define _SECURITY_AUDIT_KERNEL_H_
#ifndef _KERNEL
#error "no user-serviceable parts inside"
#endif
#include <bsm/audit.h>
#include <sys/file.h>
#include <sys/sysctl.h>
/*
* Audit subsystem condition flags. The audit_enabled flag is set and
* removed automatically as a result of configuring log files, and can be
* observed but should not be directly manipulated. The audit suspension
* flag permits audit to be temporarily disabled without reconfiguring the
* audit target.
*/
extern int audit_enabled;
extern int audit_suspended;
/*
* Define the masks for the audited arguments.
*
* XXXRW: These need to remain in audit.h for now because our vnode and name
* lookup audit calls rely on passing in flags to indicate which name or
* vnode is being logged. These should move to audit_private.h when that is
* fixed.
*/
#define ARG_EUID 0x0000000000000001ULL
#define ARG_RUID 0x0000000000000002ULL
#define ARG_SUID 0x0000000000000004ULL
#define ARG_EGID 0x0000000000000008ULL
#define ARG_RGID 0x0000000000000010ULL
#define ARG_SGID 0x0000000000000020ULL
#define ARG_PID 0x0000000000000040ULL
#define ARG_UID 0x0000000000000080ULL
#define ARG_AUID 0x0000000000000100ULL
#define ARG_GID 0x0000000000000200ULL
#define ARG_FD 0x0000000000000400ULL
#define ARG_POSIX_IPC_PERM 0x0000000000000800ULL
#define ARG_FFLAGS 0x0000000000001000ULL
#define ARG_MODE 0x0000000000002000ULL
#define ARG_DEV 0x0000000000004000ULL
#define ARG_ADDR 0x0000000000008000ULL
#define ARG_LEN 0x0000000000010000ULL
#define ARG_MASK 0x0000000000020000ULL
#define ARG_SIGNUM 0x0000000000040000ULL
#define ARG_LOGIN 0x0000000000080000ULL
#define ARG_SADDRINET 0x0000000000100000ULL
#define ARG_SADDRINET6 0x0000000000200000ULL
#define ARG_SADDRUNIX 0x0000000000400000ULL
#define ARG_TERMID_ADDR 0x0000000000400000ULL
#define ARG_UNUSED2 0x0000000001000000ULL
#define ARG_UPATH1 0x0000000002000000ULL
#define ARG_UPATH2 0x0000000004000000ULL
#define ARG_TEXT 0x0000000008000000ULL
#define ARG_VNODE1 0x0000000010000000ULL
#define ARG_VNODE2 0x0000000020000000ULL
#define ARG_SVIPC_CMD 0x0000000040000000ULL
#define ARG_SVIPC_PERM 0x0000000080000000ULL
#define ARG_SVIPC_ID 0x0000000100000000ULL
#define ARG_SVIPC_ADDR 0x0000000200000000ULL
#define ARG_GROUPSET 0x0000000400000000ULL
#define ARG_CMD 0x0000000800000000ULL
#define ARG_SOCKINFO 0x0000001000000000ULL
#define ARG_ASID 0x0000002000000000ULL
#define ARG_TERMID 0x0000004000000000ULL
#define ARG_AUDITON 0x0000008000000000ULL
#define ARG_VALUE 0x0000010000000000ULL
#define ARG_AMASK 0x0000020000000000ULL
#define ARG_CTLNAME 0x0000040000000000ULL
#define ARG_PROCESS 0x0000080000000000ULL
#define ARG_MACHPORT1 0x0000100000000000ULL
#define ARG_MACHPORT2 0x0000200000000000ULL
#define ARG_EXIT 0x0000400000000000ULL
#define ARG_IOVECSTR 0x0000800000000000ULL
#define ARG_ARGV 0x0001000000000000ULL
#define ARG_ENVV 0x0002000000000000ULL
#define ARG_NONE 0x0000000000000000ULL
#define ARG_ALL 0xFFFFFFFFFFFFFFFFULL
void audit_syscall_enter(unsigned short code, struct thread *td);
void audit_syscall_exit(int error, struct thread *td);
/*
* The remaining kernel functions are conditionally compiled in as they are
* wrapped by a macro, and the macro should be the only place in the source
* tree where these functions are referenced.
*/
#ifdef AUDIT
struct ipc_perm;
struct sockaddr;
union auditon_udata;
void audit_arg_addr(void * addr);
void audit_arg_exit(int status, int retval);
void audit_arg_len(int len);
void audit_arg_fd(int fd);
void audit_arg_fflags(int fflags);
void audit_arg_gid(gid_t gid);
void audit_arg_uid(uid_t uid);
void audit_arg_egid(gid_t egid);
void audit_arg_euid(uid_t euid);
void audit_arg_rgid(gid_t rgid);
void audit_arg_ruid(uid_t ruid);
void audit_arg_sgid(gid_t sgid);
void audit_arg_suid(uid_t suid);
void audit_arg_groupset(gid_t *gidset, u_int gidset_size);
void audit_arg_login(char *login);
void audit_arg_ctlname(int *name, int namelen);
void audit_arg_mask(int mask);
void audit_arg_mode(mode_t mode);
void audit_arg_dev(int dev);
void audit_arg_value(long value);
void audit_arg_owner(uid_t uid, gid_t gid);
void audit_arg_pid(pid_t pid);
void audit_arg_process(struct proc *p);
void audit_arg_signum(u_int signum);
void audit_arg_socket(int sodomain, int sotype, int soprotocol);
void audit_arg_sockaddr(struct thread *td, struct sockaddr *sa);
void audit_arg_auid(uid_t auid);
void audit_arg_auditinfo(struct auditinfo *au_info);
void audit_arg_auditinfo_addr(struct auditinfo_addr *au_info);
void audit_arg_upath(struct thread *td, char *upath, u_int64_t flags);
void audit_arg_vnode(struct vnode *vp, u_int64_t flags);
void audit_arg_text(char *text);
void audit_arg_cmd(int cmd);
void audit_arg_svipc_cmd(int cmd);
void audit_arg_svipc_perm(struct ipc_perm *perm);
void audit_arg_svipc_id(int id);
void audit_arg_svipc_addr(void *addr);
void audit_arg_posix_ipc_perm(uid_t uid, gid_t gid, mode_t mode);
void audit_arg_auditon(union auditon_udata *udata);
void audit_arg_file(struct proc *p, struct file *fp);
void audit_arg_argv(char *argv, int argc, int length);
void audit_arg_envv(char *envv, int envc, int length);
void audit_sysclose(struct thread *td, int fd);
void audit_cred_copy(struct ucred *src, struct ucred *dest);
void audit_cred_destroy(struct ucred *cred);
void audit_cred_init(struct ucred *cred);
void audit_cred_kproc0(struct ucred *cred);
void audit_cred_proc1(struct ucred *cred);
void audit_proc_coredump(struct thread *td, char *path, int errcode);
void audit_thread_alloc(struct thread *td);
void audit_thread_free(struct thread *td);
/*
* Define macros to wrap the audit_arg_* calls by checking the global
* audit_enabled flag before performing the actual call.
*/
#define AUDITING_TD(td) ((td)->td_pflags & TDP_AUDITREC)
#define AUDIT_ARG_ADDR(addr) do { \
if (AUDITING_TD(curthread)) \
audit_arg_addr((addr)); \
} while (0)
#define AUDIT_ARG_ARGV(argv, argc, length) do { \
if (AUDITING_TD(curthread)) \
audit_arg_argv((argv), (argc), (length)); \
} while (0)
#define AUDIT_ARG_AUDITON(udata) do { \
if (AUDITING_TD(curthread)) \
audit_arg_auditon((udata)); \
} while (0)
#define AUDIT_ARG_CMD(cmd) do { \
if (AUDITING_TD(curthread)) \
audit_arg_cmd((cmd)); \
} while (0)
#define AUDIT_ARG_DEV(dev) do { \
if (AUDITING_TD(curthread)) \
audit_arg_dev((dev)); \
} while (0)
#define AUDIT_ARG_EGID(egid) do { \
if (AUDITING_TD(curthread)) \
audit_arg_egid((egid)); \
} while (0)
#define AUDIT_ARG_ENVV(envv, envc, length) do { \
if (AUDITING_TD(curthread)) \
audit_arg_envv((envv), (envc), (length)); \
} while (0)
#define AUDIT_ARG_EXIT(status, retval) do { \
if (AUDITING_TD(curthread)) \
audit_arg_exit((status), (retval)); \
} while (0)
#define AUDIT_ARG_EUID(euid) do { \
if (AUDITING_TD(curthread)) \
audit_arg_euid((euid)); \
} while (0)
#define AUDIT_ARG_FD(fd) do { \
if (AUDITING_TD(curthread)) \
audit_arg_fd((fd)); \
} while (0)
#define AUDIT_ARG_FILE(p, fp) do { \
if (AUDITING_TD(curthread)) \
audit_arg_file((p), (fp)); \
} while (0)
#define AUDIT_ARG_FFLAGS(fflags) do { \
if (AUDITING_TD(curthread)) \
audit_arg_fflags((fflags)); \
} while (0)
#define AUDIT_ARG_GID(gid) do { \
if (AUDITING_TD(curthread)) \
audit_arg_gid((gid)); \
} while (0)
#define AUDIT_ARG_GROUPSET(gidset, gidset_size) do { \
if (AUDITING_TD(curthread)) \
audit_arg_groupset((gidset), (gidset_size)); \
} while (0)
#define AUDIT_ARG_MODE(mode) do { \
if (AUDITING_TD(curthread)) \
audit_arg_mode((mode)); \
} while (0)
#define AUDIT_ARG_OWNER(uid, gid) do { \
if (AUDITING_TD(curthread)) \
audit_arg_owner((uid), (gid)); \
} while (0)
#define AUDIT_ARG_PID(pid) do { \
if (AUDITING_TD(curthread)) \
audit_arg_pid((pid)); \
} while (0)
#define AUDIT_ARG_PROCESS(p) do { \
if (AUDITING_TD(curthread)) \
audit_arg_process((p)); \
} while (0)
#define AUDIT_ARG_RGID(rgid) do { \
if (AUDITING_TD(curthread)) \
audit_arg_gid((rgid)); \
} while (0)
#define AUDIT_ARG_RUID(ruid) do { \
if (AUDITING_TD(curthread)) \
audit_arg_ruid((ruid)); \
} while (0)
#define AUDIT_ARG_SIGNUM(signum) do { \
if (AUDITING_TD(curthread)) \
audit_arg_signum((signum)); \
} while (0)
#define AUDIT_ARG_SGID(sgid) do { \
if (AUDITING_TD(curthread)) \
audit_arg_sgid((sgid)); \
} while (0)
#define AUDIT_ARG_SUID(suid) do { \
if (AUDITING_TD(curthread)) \
audit_arg_suid((suid)); \
} while (0)
#define AUDIT_ARG_TEXT(text) do { \
if (AUDITING_TD(curthread)) \
audit_arg_text((text)); \
} while (0)
#define AUDIT_ARG_UID(uid) do { \
if (AUDITING_TD(curthread)) \
audit_arg_uid((uid)); \
} while (0)
#define AUDIT_ARG_UPATH(td, upath, flags) do { \
if (AUDITING_TD(curthread)) \
audit_arg_upath((td), (upath), (flags)); \
} while (0)
#define AUDIT_ARG_VALUE(value) do { \
if (AUDITING_TD(curthread)) \
audit_arg_value((value)); \
} while (0)
#define AUDIT_ARG_VNODE(vp, flags) do { \
if (AUDITING_TD(curthread)) \
audit_arg_vnode((vp), (flags)); \
} while (0)
#define AUDIT_SYSCALL_ENTER(code, td) do { \
if (audit_enabled) { \
audit_syscall_enter(code, td); \
} \
} while (0)
/*
* Wrap the audit_syscall_exit() function so that it is called only when
* we have a audit record on the thread. Audit records can persist after
* auditing is disabled, so we don't just check audit_enabled here.
*/
#define AUDIT_SYSCALL_EXIT(error, td) do { \
if (td->td_pflags & TDP_AUDITREC) \
audit_syscall_exit(error, td); \
} while (0)
/*
* A Macro to wrap the audit_sysclose() function.
*/
#define AUDIT_SYSCLOSE(td, fd) do { \
if (td->td_pflags & TDP_AUDITREC) \
audit_sysclose(td, fd); \
} while (0)
#else /* !AUDIT */
#define AUDIT_ARG_ADDR(addr)
#define AUDIT_ARG_ARGV(argv, argc, length)
#define AUDIT_ARG_AUDITON(udata)
#define AUDIT_ARG_CMD(cmd)
#define AUDIT_ARG_DEV(dev)
#define AUDIT_ARG_EGID(egid)
#define AUDIT_ARG_ENVV(envv, envc, length)
#define AUDIT_ARG_EXIT(status, retval)
#define AUDIT_ARG_EUID(euid)
#define AUDIT_ARG_FD(fd)
#define AUDIT_ARG_FILE(p, fp)
#define AUDIT_ARG_FFLAGS(fflags)
#define AUDIT_ARG_GID(gid)
#define AUDIT_ARG_GROUPSET(gidset, gidset_size)
#define AUDIT_ARG_MODE(mode)
#define AUDIT_ARG_OWNER(uid, gid)
#define AUDIT_ARG_PID(pid)
#define AUDIT_ARG_PROCESS(p)
#define AUDIT_ARG_RGID(rgid)
#define AUDIT_ARG_RUID(ruid)
#define AUDIT_ARG_SIGNUM(signum)
#define AUDIT_ARG_SGID(sgid)
#define AUDIT_ARG_SUID(suid)
#define AUDIT_ARG_TEXT(text)
#define AUDIT_ARG_UID(uid)
#define AUDIT_ARG_UPATH(td, upath, flags)
#define AUDIT_ARG_VALUE(value)
#define AUDIT_ARG_VNODE(vp, flags)
#define AUDIT_SYSCALL_ENTER(code, td)
#define AUDIT_SYSCALL_EXIT(error, td)
#define AUDIT_SYSCLOSE(p, fd)
#endif /* AUDIT */
#endif /* !_SECURITY_AUDIT_KERNEL_H_ */
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