Date: Tue, 13 Nov 2012 12:55:52 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r242960 - in head/lib/libc: gen include sys Message-ID: <201211131255.qADCtqbK048669@svn.freebsd.org>
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Author: kib Date: Tue Nov 13 12:55:52 2012 New Revision: 242960 URL: http://svnweb.freebsd.org/changeset/base/242960 Log: Implement the waitid() SUSv4 function using wait6() system call. PR: standards/170346 Submitted by: "Jukka A. Ukkonen" <jau@iki.fi> MFC after: 1 month Added: head/lib/libc/gen/waitid.c (contents, props changed) Modified: head/lib/libc/gen/Makefile.inc head/lib/libc/gen/Symbol.map head/lib/libc/include/namespace.h head/lib/libc/include/un-namespace.h head/lib/libc/sys/Symbol.map Modified: head/lib/libc/gen/Makefile.inc ============================================================================== --- head/lib/libc/gen/Makefile.inc Tue Nov 13 12:53:41 2012 (r242959) +++ head/lib/libc/gen/Makefile.inc Tue Nov 13 12:55:52 2012 (r242960) @@ -34,7 +34,7 @@ SRCS+= __getosreldate.c __xuname.c \ syslog.c telldir.c termios.c time.c times.c timezone.c tls.c \ ttyname.c ttyslot.c ualarm.c ulimit.c uname.c unvis.c \ usleep.c utime.c utxdb.c valloc.c vis.c wait.c wait3.c waitpid.c \ - wordexp.c + waitid.c wordexp.c .PATH: ${.CURDIR}/../../contrib/libc-pwcache SRCS+= pwcache.c pwcache.h Modified: head/lib/libc/gen/Symbol.map ============================================================================== --- head/lib/libc/gen/Symbol.map Tue Nov 13 12:53:41 2012 (r242959) +++ head/lib/libc/gen/Symbol.map Tue Nov 13 12:55:52 2012 (r242960) @@ -391,6 +391,7 @@ FBSD_1.3 { pwcache_userdb; pwcache_groupdb; uid_from_user; + waitid; }; FBSDprivate_1.0 { Added: head/lib/libc/gen/waitid.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/lib/libc/gen/waitid.c Tue Nov 13 12:55:52 2012 (r242960) @@ -0,0 +1,65 @@ +/*- + * Copyright (c) 2012 Jukka A. Ukkonen + * All rights reserved. + * + * This software was developed by Jukka Ukkonen for FreeBSD. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include "namespace.h" +#include <sys/types.h> +#include <sys/wait.h> +#include <stddef.h> +#include <string.h> +#include <signal.h> +#include <errno.h> +#include "un-namespace.h" + +int +__waitid(idtype_t idtype, id_t id, siginfo_t *info, int flags) +{ + int status; + pid_t ret; + + ret = _wait6(idtype, id, &status, flags, NULL, info); + + /* + * According to SUSv4, waitid() shall not return a PID when a + * process is found, but only 0. If a process was actually + * found, siginfo_t fields si_signo and si_pid will be + * non-zero. In case WNOHANG was set in the flags and no + * process was found those fields are set to zero using + * memset() below. + */ + if (ret == 0 && info != NULL) + memset(info, 0, sizeof(*info)); + else if (ret > 0) + ret = 0; + return (ret); +} + +__weak_reference(__waitid, waitid); +__weak_reference(__waitid, _waitid); Modified: head/lib/libc/include/namespace.h ============================================================================== --- head/lib/libc/include/namespace.h Tue Nov 13 12:53:41 2012 (r242959) +++ head/lib/libc/include/namespace.h Tue Nov 13 12:55:52 2012 (r242960) @@ -229,6 +229,7 @@ #define socketpair _socketpair #define usleep _usleep #define wait4 _wait4 +#define wait6 _wait6 #define waitpid _waitpid #define write _write #define writev _writev Modified: head/lib/libc/include/un-namespace.h ============================================================================== --- head/lib/libc/include/un-namespace.h Tue Nov 13 12:53:41 2012 (r242959) +++ head/lib/libc/include/un-namespace.h Tue Nov 13 12:55:52 2012 (r242960) @@ -210,6 +210,7 @@ #undef socketpair #undef usleep #undef wait4 +#undef wait6 #undef waitpid #undef write #undef writev Modified: head/lib/libc/sys/Symbol.map ============================================================================== --- head/lib/libc/sys/Symbol.map Tue Nov 13 12:53:41 2012 (r242959) +++ head/lib/libc/sys/Symbol.map Tue Nov 13 12:55:52 2012 (r242960) @@ -384,6 +384,7 @@ FBSD_1.3 { ffclock_getestimate; ffclock_setestimate; posix_fadvise; + wait6; }; FBSDprivate_1.0 { @@ -1019,6 +1020,8 @@ FBSDprivate_1.0 { __sys_vadvise; _wait4; __sys_wait4; + _wait6; + __sys_wait6; _write; __sys_write; _writev;
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