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Annotation of XNU/bsd/sys/ktrace.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
        !            23: /*
        !            24:  * Copyright (c) 1988, 1993
        !            25:  *     The Regents of the University of California.  All rights reserved.
        !            26:  *
        !            27:  * Redistribution and use in source and binary forms, with or without
        !            28:  * modification, are permitted provided that the following conditions
        !            29:  * are met:
        !            30:  * 1. Redistributions of source code must retain the above copyright
        !            31:  *    notice, this list of conditions and the following disclaimer.
        !            32:  * 2. Redistributions in binary form must reproduce the above copyright
        !            33:  *    notice, this list of conditions and the following disclaimer in the
        !            34:  *    documentation and/or other materials provided with the distribution.
        !            35:  * 3. All advertising materials mentioning features or use of this software
        !            36:  *    must display the following acknowledgement:
        !            37:  *     This product includes software developed by the University of
        !            38:  *     California, Berkeley and its contributors.
        !            39:  * 4. Neither the name of the University nor the names of its contributors
        !            40:  *    may be used to endorse or promote products derived from this software
        !            41:  *    without specific prior written permission.
        !            42:  *
        !            43:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            44:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            45:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            46:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            47:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            48:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            49:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            50:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            51:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            52:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            53:  * SUCH DAMAGE.
        !            54:  *
        !            55:  *     @(#)ktrace.h    8.1 (Berkeley) 6/2/93
        !            56:  */
        !            57: 
        !            58: #ifndef _SYS_KTRACE_H_
        !            59: #define        _SYS_KTRACE_H_
        !            60: 
        !            61: /*
        !            62:  * operations to ktrace system call  (KTROP(op))
        !            63:  */
        !            64: #define KTROP_SET              0       /* set trace points */
        !            65: #define KTROP_CLEAR            1       /* clear trace points */
        !            66: #define KTROP_CLEARFILE                2       /* stop all tracing to file */
        !            67: #define        KTROP(o)                ((o)&3) /* macro to extract operation */
        !            68: /*
        !            69:  * flags (ORed in with operation)
        !            70:  */
        !            71: #define KTRFLAG_DESCEND                4       /* perform op on all children too */
        !            72: 
        !            73: /*
        !            74:  * ktrace record header
        !            75:  */
        !            76: struct ktr_header {
        !            77:        int     ktr_len;                /* length of buf */
        !            78:        short   ktr_type;               /* trace record type */
        !            79:        pid_t   ktr_pid;                /* process id */
        !            80:        char    ktr_comm[MAXCOMLEN+1];  /* command name */
        !            81:        struct  timeval ktr_time;       /* timestamp */
        !            82:        caddr_t ktr_buf;
        !            83: };
        !            84: 
        !            85: /*
        !            86:  * Test for kernel trace point
        !            87:  */
        !            88: #define KTRPOINT(p, type)      \
        !            89:        (((p)->p_traceflag & ((1<<(type))|KTRFAC_ACTIVE)) == (1<<(type)))
        !            90: 
        !            91: /*
        !            92:  * ktrace record types
        !            93:  */
        !            94: 
        !            95: /*
        !            96:  * KTR_SYSCALL - system call record
        !            97:  */
        !            98: #define KTR_SYSCALL    1
        !            99: struct ktr_syscall {
        !           100:        int     ktr_code;               /* syscall number */
        !           101:        int     ktr_argsize;            /* size of arguments */
        !           102:        /*
        !           103:         * followed by ktr_argsize/sizeof(register_t) "register_t"s
        !           104:         */
        !           105: };
        !           106: 
        !           107: /*
        !           108:  * KTR_SYSRET - return from system call record
        !           109:  */
        !           110: #define KTR_SYSRET     2
        !           111: struct ktr_sysret {
        !           112:        short   ktr_code;
        !           113:        short   ktr_eosys;
        !           114:        int     ktr_error;
        !           115:        int     ktr_retval;
        !           116: };
        !           117: 
        !           118: /*
        !           119:  * KTR_NAMEI - namei record
        !           120:  */
        !           121: #define KTR_NAMEI      3
        !           122:        /* record contains pathname */
        !           123: 
        !           124: /*
        !           125:  * KTR_GENIO - trace generic process i/o
        !           126:  */
        !           127: #define KTR_GENIO      4
        !           128: struct ktr_genio {
        !           129:        int     ktr_fd;
        !           130:        enum    uio_rw ktr_rw;
        !           131:        /*
        !           132:         * followed by data successfully read/written
        !           133:         */
        !           134: };
        !           135: 
        !           136: /*
        !           137:  * KTR_PSIG - trace processed signal
        !           138:  */
        !           139: #define        KTR_PSIG        5
        !           140: struct ktr_psig {
        !           141:        int     signo;
        !           142:        sig_t   action;
        !           143:        int     mask;
        !           144:        int     code;
        !           145: };
        !           146: 
        !           147: /*
        !           148:  * KTR_CSW - trace context switches
        !           149:  */
        !           150: #define KTR_CSW                6
        !           151: struct ktr_csw {
        !           152:        int     out;    /* 1 if switch out, 0 if switch in */
        !           153:        int     user;   /* 1 if usermode (ivcsw), 0 if kernel (vcsw) */
        !           154: };
        !           155: 
        !           156: /*
        !           157:  * kernel trace points (in p_traceflag)
        !           158:  */
        !           159: #define KTRFAC_MASK    0x00ffffff
        !           160: #define KTRFAC_SYSCALL (1<<KTR_SYSCALL)
        !           161: #define KTRFAC_SYSRET  (1<<KTR_SYSRET)
        !           162: #define KTRFAC_NAMEI   (1<<KTR_NAMEI)
        !           163: #define KTRFAC_GENIO   (1<<KTR_GENIO)
        !           164: #define        KTRFAC_PSIG     (1<<KTR_PSIG)
        !           165: #define KTRFAC_CSW     (1<<KTR_CSW)
        !           166: /*
        !           167:  * trace flags (also in p_traceflags)
        !           168:  */
        !           169: #define KTRFAC_ROOT    0x80000000      /* root set this trace */
        !           170: #define KTRFAC_INHERIT 0x40000000      /* pass trace flags to children */
        !           171: #define KTRFAC_ACTIVE  0x20000000      /* ktrace logging in progress, ignore */
        !           172: 
        !           173: #ifndef        KERNEL
        !           174: 
        !           175: #include <sys/cdefs.h>
        !           176: 
        !           177: __BEGIN_DECLS
        !           178: int    ktrace __P((const char *, int, int, pid_t));
        !           179: __END_DECLS
        !           180: 
        !           181: #endif /* !KERNEL */
        !           182: #endif /* !_SYS_KTRACE_H_ */
        !           183: 

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