diff options
Diffstat (limited to 'sys/sys/wait.h')
| -rw-r--r-- | sys/sys/wait.h | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/sys/sys/wait.h b/sys/sys/wait.h new file mode 100644 index 0000000..0e85f40 --- /dev/null +++ b/sys/sys/wait.h @@ -0,0 +1,103 @@ +/* $OpenBSD: wait.h,v 1.17 2014/06/13 22:40:31 matthew Exp $ */ +/* $NetBSD: wait.h,v 1.11 1996/04/09 20:55:51 cgd Exp $ */ + +/* + * Copyright (c) 1982, 1986, 1989, 1993, 1994 + * The Regents of the University of California. 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 the University 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 THE REGENTS AND 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 THE REGENTS OR 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. + * + * @(#)wait.h 8.2 (Berkeley) 7/10/94 + */ + +#ifndef _SYS_WAIT_H_ +#define _SYS_WAIT_H_ + +#include <sys/cdefs.h> + +/* + * This file holds definitions relevent to the wait4 system call + * and the alternate interfaces that use it (wait, wait3, waitpid). + */ + +/* + * Macros to test the exit status returned by wait + * and extract the relevant values. + */ +#define _WSTATUS(x) ((x) & 0177) +#define _WSTOPPED 0177 /* _WSTATUS if process is stopped */ +#define _WCONTINUED 0177777 /* process has continued */ +#define WIFSTOPPED(x) (((x) & 0xff) == _WSTOPPED) +#define WSTOPSIG(x) (int)(((unsigned)(x) >> 8) & 0xff) +#define WIFSIGNALED(x) (_WSTATUS(x) != _WSTOPPED && _WSTATUS(x) != 0) +#define WTERMSIG(x) (_WSTATUS(x)) +#define WIFEXITED(x) (_WSTATUS(x) == 0) +#define WEXITSTATUS(x) (int)(((unsigned)(x) >> 8) & 0xff) +#define WIFCONTINUED(x) (((x) & _WCONTINUED) == _WCONTINUED) +#if __XPG_VISIBLE +#define WCOREFLAG 0200 +#define WCOREDUMP(x) ((x) & WCOREFLAG) + +#define W_EXITCODE(ret, sig) ((ret) << 8 | (sig)) +#define W_STOPCODE(sig) ((sig) << 8 | _WSTOPPED) +#endif + +/* + * Option bits for the third argument of wait4. WNOHANG causes the + * wait to not hang if there are no stopped or terminated processes, rather + * returning an error indication in this case (pid==0). WUNTRACED + * indicates that the caller should receive status about untraced children + * which stop due to signals. If children are stopped and a wait without + * this option is done, it is as though they were still running... nothing + * about them is returned. + */ +#define WNOHANG 1 /* don't hang in wait */ +#define WUNTRACED 2 /* tell about stopped, untraced children */ +#define WCONTINUED 8 /* report a job control continued process */ + +#if __BSD_VISIBLE +/* + * Tokens for special values of the "pid" parameter to wait4. + */ +#define WAIT_ANY (-1) /* any process */ +#define WAIT_MYPGRP 0 /* any process in my process group */ +#endif /* __BSD_VISIBLE */ + +#ifndef _KERNEL +#include <sys/types.h> + +__BEGIN_DECLS +struct rusage; /* forward declaration */ + +pid_t wait(int *); +pid_t waitpid(pid_t, int *, int); +#if __BSD_VISIBLE +pid_t wait3(int *, int, struct rusage *); +pid_t wait4(pid_t, int *, int, struct rusage *); +#endif /* __BSD_VISIBLE */ +__END_DECLS +#endif /* !_KERNEL */ + +#endif /* !_SYS_WAIT_H_ */ |