diff options
Diffstat (limited to 'usr/src/lib/libc/port/gen/wait4.c')
| -rw-r--r-- | usr/src/lib/libc/port/gen/wait4.c | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/usr/src/lib/libc/port/gen/wait4.c b/usr/src/lib/libc/port/gen/wait4.c deleted file mode 100644 index 15ffdc92e4..0000000000 --- a/usr/src/lib/libc/port/gen/wait4.c +++ /dev/null @@ -1,161 +0,0 @@ -/* - * CDDL HEADER START - * - * The contents of this file are subject to the terms of the - * Common Development and Distribution License, Version 1.0 only - * (the "License"). You may not use this file except in compliance - * with the License. - * - * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE - * or http://www.opensolaris.org/os/licensing. - * See the License for the specific language governing permissions - * and limitations under the License. - * - * When distributing Covered Code, include this CDDL HEADER in each - * file and include the License file at usr/src/OPENSOLARIS.LICENSE. - * If applicable, add the following below this CDDL HEADER, with the - * fields enclosed by brackets "[]" replaced with your own identifying - * information: Portions Copyright [yyyy] [name of copyright owner] - * - * CDDL HEADER END - */ -/* - * Copyright 2004 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. - * - * Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T - * All Rights Reserved - */ - -#pragma ident "%Z%%M% %I% %E% SMI" - -#include "synonyms.h" - -/* - * Compatibility lib for SunOS's wait4(). - */ - -#include <sys/types.h> -#include <sys/time.h> -#include <sys/times.h> -#include <wait.h> -#include <sys/siginfo.h> -#include <sys/procset.h> -#include <sys/param.h> -#include <sys/resource.h> -#include <string.h> -#include <errno.h> - -/* - * Since sysV does not support rusage as in BSD, an approximate approach - * is: - * ... - * call times - * call waitid - * if ( a child is found ) - * call times again - * rusage ~= diff in the 2 times call - * ... - */ - -static int wstat(int, int); - -pid_t -wait4(pid_t pid, int *status, int options, struct rusage *rp) -{ - struct tms before_tms; - struct tms after_tms; - siginfo_t info; - int error; - int noptions; - idtype_t idtype; - - if (rp) - (void) memset(rp, 0, sizeof (struct rusage)); - (void) memset(&info, 0, sizeof (siginfo_t)); - - if (times(&before_tms) == (clock_t)-1) - return (-1); /* errno is set by times() */ - - /* - * SunOS's wait4() previously supported only WNOHANG & - * WUNTRACED. XPG4v2 mandates that wait3() (which calls - * wait4()) also support WCONTINUED. - */ - if (options & ~(WNOHANG|WUNTRACED|WCONTINUED)) { - errno = EINVAL; - return (-1); - } - noptions = options | WEXITED | WTRAPPED; - - /* - * Emulate undocumented 4.x semantics for 1186845 - */ - if (pid < 0) { - pid = -pid; - idtype = P_PGID; - } else if (pid == 0) - idtype = P_ALL; - else - idtype = P_PID; - - error = waitid(idtype, pid, &info, noptions); - if (error == 0) { - clock_t diffu; /* difference in usertime (ticks) */ - clock_t diffs; /* difference in systemtime (ticks) */ - clock_t hz; - - if ((options & WNOHANG) && (info.si_pid == 0)) - return (0); /* no child found */ - - if (rp) { - - if (times(&after_tms) == (clock_t)-1) - return (-1); /* errno set by times() */ - /* - * The system/user time is an approximation only !!! - */ - diffu = after_tms.tms_cutime - before_tms.tms_cutime; - diffs = after_tms.tms_cstime - before_tms.tms_cstime; - hz = CLK_TCK; - rp->ru_utime.tv_sec = diffu / hz; - rp->ru_utime.tv_usec = (diffu % hz) * (1000000 / hz); - rp->ru_stime.tv_sec = diffs / hz; - rp->ru_stime.tv_usec = (diffs % hz) * (1000000 / hz); - } - if (status) - *status = wstat(info.si_code, info.si_status); - return (info.si_pid); - } else { - return (-1); /* error number is set by waitid() */ - } -} - -/* - * Convert the status code to old style wait status - */ -static int -wstat(int code, int status) -{ - int stat = (status & 0377); - - switch (code) { - case CLD_EXITED: - stat <<= 8; - break; - case CLD_DUMPED: - stat |= WCOREFLG; - break; - case CLD_KILLED: - break; - case CLD_TRAPPED: - case CLD_STOPPED: - stat <<= 8; - stat |= WSTOPFLG; - break; - case CLD_CONTINUED: - stat = WCONTFLG; - break; - } - return (stat); -} |