usr/src/ucbhead/sys/wait.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T     */
  28 /*        All Rights Reserved   */
  29
  30 /*
  31  * Portions of this source code were derived from Berkeley 4.3 BSD
  32  * under license from the Regents of the University of California.
  33  */
  34
  35 #ifndef _SYS_WAIT_H
  36 #define _SYS_WAIT_H
  37
  38 #pragma ident   "%Z%%M% %I%     %E% SMI"
  39
  40 #include <sys/isa_defs.h>
  41 #include <sys/resource.h>
  42
  43 #ifdef __cplusplus
  44 extern "C" {
  45 #endif
  46
  47 /*
  48  * This wait.h is a combination of SunOS's wait.h and SysV wait.h
  49  * The structure 'union wait' is taken from SunOS, while the
  50  * rest of the #define's are from SysV.
  51  */
  52
  53 /*
  54  * Structure of the information in the first word returned by both
  55  * wait and wait3.  If w_stopval==WSTOPPED, then the second structure
  56  * describes the information returned, else the first.  See WUNTRACED below.
  57  */
  58 union wait      {
  59         int     w_status;               /* used in syscall */
  60         /*
  61          * Terminated process status.
  62          */
  63         struct {
  64 #if defined(_BIT_FIELDS_LTOH)
  65                 unsigned short  w_Termsig:7;    /* termination signal */
  66                 unsigned short  w_Coredump:1;   /* core dump indicator */
  67                 unsigned short  w_Retcode:8;    /* exit code if w_termsig==0 */
  68 #else
  69                 unsigned short  w_Fill1:16;     /* high 16 bits unused */
  70                 unsigned short  w_Retcode:8;    /* exit code if w_termsig==0 */
  71                 unsigned short  w_Coredump:1;   /* core dump indicator */
  72                 unsigned short  w_Termsig:7;    /* termination signal */
  73 #endif
  74         } w_T;
  75         /*
  76          * Stopped process status.  Returned
  77          * only for traced children unless requested
  78          * with the WUNTRACED option bit.
  79          */
  80         struct {
  81 #if defined(_BIT_FIELDS_LTOH)
  82                 unsigned short  w_Stopval:8;    /* == W_STOPPED if stopped */
  83                 unsigned short  w_Stopsig:8;    /* signal that stopped us */
  84 #else
  85                 unsigned short  w_Fill2:16;     /* high 16 bits unused */
  86                 unsigned short  w_Stopsig:8;    /* signal that stopped us */
  87                 unsigned short  w_Stopval:8;    /* == W_STOPPED if stopped */
  88 #endif
  89         } w_S;
  90 };
  91 #define w_termsig       w_T.w_Termsig
  92 #define w_coredump      w_T.w_Coredump
  93 #define w_retcode       w_T.w_Retcode
  94 #define w_stopval       w_S.w_Stopval
  95 #define w_stopsig       w_S.w_Stopsig
  96
  97 /* ----- begin SysV wait.h ----- */
  98
  99 #include <sys/types.h>
 100 #ifdef  BUS_OBJERR      /* Namespace conflict */
 101 #undef  BUS_OBJERR
 102 #endif
 103 #include <sys/siginfo.h>
 104 #include <sys/procset.h>
 105
 106 /*
 107  * arguments to wait functions
 108  */
 109
 110 #define WEXITED         0001    /* wait for processes that have exite   */
 111 #define WTRAPPED        0002    /* wait for processes stopped while tracing */
 112 #define N_WSTOPPED      0004    /* wait for processes stopped by signals */
 113 #define WCONTINUED      0010    /* wait for processes continued */
 114
 115 #define WUNTRACED       N_WSTOPPED /* for POSIX */
 116
 117 #define WNOHANG         0100    /* non blocking form of wait    */
 118 #define WNOWAIT         0200    /* non destructive form of wait */
 119
 120 #define WOPTMASK        (WEXITED|WTRAPPED|WSTOPPED|WCONTINUED|WNOHANG|WNOWAIT)
 121
 122 /*
 123  * macros for stat return from wait functions
 124  */
 125
 126 #define WSTOPFLG                0177
 127 #define WSTOPPED                WSTOPFLG
 128                                 /* This is for source compatibility w/ SunOS */
 129 #define WCONTFLG                0177777
 130 #define WCOREFLG                0200
 131 #define WSIGMASK                0177
 132
 133 #define WLOBYTE(stat)           ((int)((stat)&0377))
 134 #define WHIBYTE(stat)           ((int)(((stat)>>8)&0377))
 135 #define WWORD(stat)             ((int)((stat))&0177777)
 136
 137 #define WIFEXITED(stat)         (WLOBYTE(stat) == 0)
 138 #define WIFSIGNALED(stat)       (WLOBYTE(stat) > 0 && WHIBYTE(stat) == 0)
 139 #define WIFSTOPPED(stat)        (WLOBYTE(stat) == WSTOPFLG&&WHIBYTE(stat) != 0)
 140 #define WIFCONTINUED(stat)      (WWORD(stat) == WCONTFLG)
 141
 142 #define WEXITSTATUS(stat)       WHIBYTE(stat)
 143 #define WTERMSIG(stat)          (WLOBYTE(stat)&WSIGMASK)
 144 #define WSTOPSIG(stat)          WHIBYTE(stat)
 145 #define WCOREDUMP(stat)         ((stat)&WCOREFLG)
 146
 147
 148
 149 #if !defined(_KERNEL)
 150 #if defined(__STDC__)
 151
 152 extern pid_t wait(int *);
 153 extern pid_t waitpid(pid_t, int *, int);
 154 extern int waitid(idtype_t, id_t, siginfo_t *, int);
 155 extern pid_t wait4(pid_t, int *, int, struct rusage *);
 156 extern pid_t wait3(int *, int, struct rusage *);
 157
 158 #else
 159
 160 extern pid_t wait();
 161 extern pid_t waitpid();
 162 extern int waitid();
 163
 164 #endif  /* __STDC__ */
 165 #endif  /* _KERNEL */
 166
 167 #ifdef __cplusplus
 168 }
 169 #endif
 170
 171 #endif  /* _SYS_WAIT_H */