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Importing usr.bin/nice

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Replaces commands/nice. No Minix-specific changes needed.

Change-Id: I3e089497dcd86893aa28e3a973496af5b1689f45
This commit is contained in:
Thomas Cort 2013-10-10 16:29:19 -04:00
parent 10d6e1a8d2
commit d37082b292
9 changed files with 189 additions and 77 deletions
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2
commands/Makefile
View file

@ -16,7 +16,7 @@ SUBDIR= add_route arp ash at backup btrace \
less loadkeys loadramdisk logger look lp \
lpd lspci mail MAKEDEV \
mesg mined mkfifo \
mount mt netconf nice nohup \
mount mt netconf nohup \
nonamed od paste patch \
ping postinstall poweroff pr prep printroot \
profile progressbar pr_routes ps pwdauth \

4
commands/nice/Makefile
View file

@ -1,4 +0,0 @@
PROG= nice
MAN=
.include <bsd.prog.mk>

2
man/man1/Makefile
View file

@ -11,7 +11,7 @@ MAN= ash.1 at.1 \
last.1 loadfont.1 loadkeys.1 logger.1 \
look.1 lp.1 lspci.1 mail.1 \
mesg.1 mixer.1 \
mkproto.1 mount.1 mt.1 nice.1 nohup.1 od.1 \
mkproto.1 mount.1 mt.1 nohup.1 od.1 \
paste.1 ping.1 playwave.1 pr.1 prep.1 \
profile.1 ps.1 rcp.1 recwave.1 \
remsync.1 rget.1 rlogin.1 rsh.1 rz.1 \

26
man/man1/nice.1
View file

@ -1,26 +0,0 @@
.TH NICE 1
.SH NAME
nice \- invoke command with higher or lower scheduling priority
.SH SYNOPSIS
\fBnice\fP [\fB\-n\fP increment] \fIutility\fP [\fIargument\fP...]
.SH DESCRIPTION
The
.B nice
utility runs \fIutility\fP at a different scheduling priority than
the default. The nicer the process is to others (the higher the
increment), the less favourable the scheduling is. Super-users
can give a negative increment, meaning scheduling is more favourable
than the default.
.SH OPTIONS
.TP
.B \-n \fIincrement
the increment value sets how nice the invoked command will be. 0 is
the same priority as regular processes. 10 is the default.
The range is -20 to 20.
.SH SEE ALSO
getpriority(2), setpriority(2)
.SH AUTHOR
This
.B nice
utility was imported from FreeBSD. This manual page was written
Ben Gras <beng@few.vu.nl>.

1
releasetools/nbsd_ports
View file

@ -178,6 +178,7 @@
2010/10/15 05:46:48,usr.bin/mkdep
2009/08/15 20:44:56,usr.bin/mktemp
2012/10/17 12:00:00,usr.bin/nbperf
2013/10/10 12:00:00,usr.bin/nice
2012/10/17 12:00:00,usr.bin/nvi
2010/05/14 17:28:23,usr.bin/newgrp
2012/10/17 12:00:00,usr.bin/passwd

2
usr.bin/Makefile
View file

@ -18,7 +18,7 @@ SUBDIR= \
machine make man \
mkdep mktemp \
\
nbperf newgrp nvi \
nbperf newgrp nice nvi \
passwd \
printf \
rev \

6
usr.bin/nice/Makefile Normal file
View file

@ -0,0 +1,6 @@
# @(#)Makefile 8.1 (Berkeley) 6/6/93
# $NetBSD: Makefile,v 1.3 1995/08/31 23:30:56 jtc Exp $
PROG= nice
.include <bsd.prog.mk>

120
usr.bin/nice/nice.1 Normal file
View file

@ -0,0 +1,120 @@
.\" $NetBSD: nice.1,v 1.15 2012/03/22 07:58:19 wiz Exp $
.\"
.\" Copyright (c) 1980, 1990, 1993
.\" 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.
.\"
.\" @(#)nice.1 8.1 (Berkeley) 6/6/93
.\"
.Dd June 6, 1993
.Dt NICE 1
.Os
.Sh NAME
.Nm nice
.Nd execute a utility with an altered scheduling priority
.Sh SYNOPSIS
.Nm
.Op Fl n Ar increment
.Ar utility
.Op Ar argument ...
.Sh DESCRIPTION
.Nm
runs
.Ar utility
at an altered scheduling priority.
If an
.Ar increment
is given, it is used; otherwise
an increment of 10 is assumed.
The super-user can run utilities with priorities higher than normal by using
a negative
.Ar increment .
The priority can be adjusted over a
range of -20 (the highest) to 20 (the lowest).
A priority of 19 or 20
will prevent a process from taking any cycles from others at nice 0 or
better.
.Pp
Available options:
.Bl -tag -width indent
.It Fl n Ar increment
A positive or negative decimal integer used to modify the system scheduling
priority of
.Ar utility .
.El
.Sh EXIT STATUS
The
.Nm
utility exits with one of the following values:
.Bl -tag -width indent
.It 1-125
An error occurred in the
.Nm
utility.
.It 126
The
.Ar utility
was found but could not be invoked.
.It 127
The
.Ar utility
could not be found.
.El
.Pp
Otherwise, the exit status of
.Nm
will be that of
.Ar utility .
.Sh COMPATIBILITY
The historic
.Fl Ns Ar increment
option has been deprecated but is still supported in this implementation.
.Sh SEE ALSO
.Xr csh 1 ,
.Xr getpriority 2 ,
.Xr setpriority 2 ,
.Xr renice 8
.Sh STANDARDS
The
.Nm
utility conforms to
.St -p1003.2-92 .
.Sh HISTORY
A
.Nm
utility appeared in
.At v6 .
.Sh BUGS
.Nm
is built into
.Xr csh 1
with a slightly different syntax than described here.
The form
.Ql nice +10
nices to positive nice, and
.Ql nice \-10
can be used
by the super-user to give a process more of the processor.

101
commands/nice/nice.c → usr.bin/nice/nice.c
View file

@ -1,6 +1,8 @@
/* $NetBSD: nice.c,v 1.15 2008/07/21 14:19:24 lukem Exp $ */
/*
* Copyright (c) 1989, 1993, 1994
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1989 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
@ -10,11 +12,7 @@
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* 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.
*
@ -31,50 +29,67 @@
* SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1989\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)nice.c 5.4 (Berkeley) 6/1/90";
#endif
__RCSID("$NetBSD: nice.c,v 1.15 2008/07/21 14:19:24 lukem Exp $");
#endif /* not lint */
#include <sys/time.h>
#include <sys/resource.h>
#include <ctype.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <limits.h>
#include <locale.h>
#include <ctype.h>
#include <errno.h>
#include <err.h>
#include <unistd.h>
#define DEFNICE 10
void usage(void);
static void usage(void) __dead;
int
main(int argc, char *argv[])
main(int argc, char **argv)
{
long niceness = DEFNICE;
int ch;
char *ep;
char arg1[10];
int niceness = DEFNICE;
int c;
long tmp;
/* Obsolescent syntax: -number, --number */
if (argc >= 2 && argv[1][0] == '-' && (argv[1][1] == '-' ||
isdigit((unsigned char)argv[1][1])) && strcmp(argv[1], "--") != 0) {
snprintf(arg1, sizeof(arg1), "-n%s", argv[1] + 1);
argv[1] = arg1;
setprogname(argv[0]);
(void)setlocale(LC_ALL, "");
/* handle obsolete -number syntax */
if (argc > 1 && argv[1][0] == '-' &&
isdigit((unsigned char)argv[1][1])) {
niceness = atoi (argv[1] + 1);
argc--; argv++;
}
while ((ch = getopt(argc, argv, "n:")) != -1) {
switch (ch) {
while ((c = getopt (argc, argv, "n:")) != -1) {
switch (c) {
case 'n':
errno = 0;
niceness = strtol(optarg, &ep, 10);
if (ep == optarg || *ep != '\0' || errno ||
niceness < INT_MIN || niceness > INT_MAX) {
fprintf(stderr, "%s: invalid nice value", optarg);
return 1;
}
tmp = strtol(optarg, &ep, 10);
if (*ep != '\0' || tmp < INT_MIN || tmp > INT_MAX)
errx(EXIT_FAILURE, "invalid argument: `%s'",
optarg);
niceness = (int)tmp;
break;
default:
usage();
break;
}
}
argc -= optind;
@ -86,23 +101,23 @@ main(int argc, char *argv[])
errno = 0;
niceness += getpriority(PRIO_PROCESS, 0);
if (errno) {
perror("getpriority");
return 1;
err(EXIT_FAILURE, "getpriority");
/* NOTREACHED */
}
if (setpriority(PRIO_PROCESS, 0, (int)niceness)) {
perror("setpriority");
return 1;
if (setpriority(PRIO_PROCESS, 0, niceness) == -1) {
warn("setpriority");
}
errno = 0;
execvp(*argv, argv);
perror("execvp");
return 1;
(void)execvp(argv[0], &argv[0]);
err((errno == ENOENT || errno == ENOTDIR) ? 127 : 126, "%s", argv[0]);
/* NOTREACHED */
}
void
static void
usage(void)
{
(void)fprintf(stderr, "usage: nice [-n incr] utility [arguments]\n");
exit(1);
(void)fprintf(stderr,
"Usage: %s [ -n increment ] utility [ argument ...]\n",
getprogname());
exit(EXIT_FAILURE);
}