sanchayanmaity/minix
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Importing usr.bin/renice

Browse source 
No Minix-specific changes needed.

Change-Id: Ib698cef1dfa6b386cf658b6026409e0336a8b1c4
This commit is contained in:
Thomas Cort 2013-10-25 18:38:50 -04:00
parent 00709a7737
commit a86753f3fd
6 changed files with 343 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
distrib/sets/lists/minix/mi
View file

@ -454,6 +454,7 @@
./usr/bin/remsync minix-sys
./usr/bin/repartition minix-sys
./usr/bin/restore minix-sys
./usr/bin/renice minix-sys
./usr/bin/rev minix-sys
./usr/bin/rget minix-sys
./usr/bin/rlogin minix-sys
@ -4449,6 +4450,7 @@
./usr/man/man8/rdate.8 minix-sys
./usr/man/man8/readclock.8 minix-sys
./usr/man/man8/reboot.8 minix-sys
./usr/man/man8/renice.8 minix-sys
./usr/man/man8/repartition.8 minix-sys
./usr/man/man8/rshd.8 minix-sys
./usr/man/man8/screendump.8 minix-sys

1
releasetools/nbsd_ports
View file

@ -194,6 +194,7 @@
2013/10/17 12:00:00,usr.bin/printenv
2012/10/17 12:00:00,usr.bin/printf
2013/10/24 12:00:00,usr.bin/pwhash
2012/10/17 12:00:00,usr.bin/renice
2013/09/28 12:00:00,usr.bin/rev
2010/02/19 16:35:27,usr.bin/sed
2010/05/27 08:40:19,usr.bin/seq

2
usr.bin/Makefile
View file

@ -21,7 +21,7 @@ SUBDIR= \
nbperf newgrp nice nl nohup nvi \
passwd pr \
printenv printf pwhash \
rev \
renice rev \
\
shuffle sed seq \
sort stat su \

7
usr.bin/renice/Makefile Normal file
View file

@ -0,0 +1,7 @@
# $NetBSD: Makefile,v 1.5 1997/01/09 14:39:10 tls Exp $
# from: @(#)Makefile 8.1 (Berkeley) 6/9/93
PROG= renice
MAN= renice.8
.include <bsd.prog.mk>

151
usr.bin/renice/renice.8 Normal file
View file

@ -0,0 +1,151 @@
.\" $NetBSD: renice.8,v 1.13 2009/04/08 13:20:23 joerg Exp $
.\"
.\" Copyright (c) 1983, 1991, 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.
.\"
.\" from: @(#)renice.8 8.1 (Berkeley) 6/9/93
.\" $NetBSD: renice.8,v 1.13 2009/04/08 13:20:23 joerg Exp $
.\"
.Dd June 9, 1993
.Dt RENICE 8
.Os
.Sh NAME
.Nm renice
.Nd alter priority of running processes
.Sh SYNOPSIS
.Nm
.Ar priority
.Oo
.Op Fl p
.Ar pid ...
.Oc
.Oo
.Fl g
.Ar pgrp ...
.Oc
.Oo
.Fl u
.Ar user ...
.Oc
.Nm
.Fl n
.Ar increment
.Oo
.Op Fl p
.Ar pid ...
.Oc
.Oo
.Fl g
.Ar pgrp ...
.Oc
.Oo
.Fl u
.Ar user ...
.Oc
.Sh DESCRIPTION
.Nm
alters the
scheduling priority of one or more running processes.
The following
.Ar who
parameters are interpreted as process ID's, process group
ID's, or user names.
.Nm Ns 'ing
a process group causes all processes in the process group
to have their scheduling priority altered.
.Nm Ns 'ing
a user causes all processes owned by the user to have
their scheduling priority altered.
By default, the processes to be affected are specified by
their process ID's.
.Pp
Options supported by
.Nm :
.Bl -tag -width Ds
.It Fl g
Force
.Ar who
parameters to be interpreted as process group ID's.
.It Fl n
Instead of changing the specified processes to the given priority,
interpret the following argument as an increment to be applied to
the current priority of each process.
.It Fl u
Force the
.Ar who
parameters to be interpreted as user names.
.It Fl p
Resets the
.Ar who
interpretation to be (the default) process ID's.
.El
.Pp
For example,
.Bd -literal -offset indent
renice +1 987 -u daemon root -p 32
.Ed
.Pp
would change the priority of process ID's 987 and 32, and
all processes owned by users daemon and root.
.Pp
Users other than the super-user may only alter the priority of
processes they own,
and can only monotonically increase their ``nice value''
within the range 0 to
.Dv PRIO_MAX
(20).
(This prevents overriding administrative fiats.)
The super-user
may alter the priority of any process
and set the priority to any value in the range
.Dv PRIO_MIN
(\-20)
to
.Dv PRIO_MAX .
.Pp
Useful priorities are:
0, the ``base'' scheduling priority;
20, the affected processes will run only when nothing at the base priority
wants to;
anything negative, the processes will receive a scheduling preference.
.Sh FILES
.Bl -tag -width /etc/passwd -compact
.It Pa /etc/passwd
to map user names to user ID's
.El
.Sh SEE ALSO
.Xr nice 1 ,
.Xr getpriority 2 ,
.Xr setpriority 2
.Sh HISTORY
The
.Nm
command appeared in
.Bx 4.0 .
.Sh BUGS
Non super-users can not increase scheduling priorities of their own processes,
even if they were the ones that decreased the priorities in the first place.

181
usr.bin/renice/renice.c Normal file
View file

@ -0,0 +1,181 @@
/* $NetBSD: renice.c,v 1.18 2008/07/21 14:19:25 lukem Exp $ */
/*
* Copyright (c) 1983, 1989, 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.
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1983, 1989, 1993\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
/*static char sccsid[] = "from: @(#)renice.c 8.1 (Berkeley) 6/9/93";*/
__RCSID("$NetBSD: renice.c,v 1.18 2008/07/21 14:19:25 lukem Exp $");
#endif /* not lint */
#include <sys/resource.h>
#include <err.h>
#include <errno.h>
#include <limits.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
static int getnum(const char *, const char *, int *);
static int donice(int, id_t, int, int);
static void usage(void) __dead;
/*
* Change the priority (nice) of processes
* or groups of processes which are already
* running.
*/
int
main(int argc, char **argv)
{
int which = PRIO_PROCESS;
int prio, errs = 0, incr = 0;
id_t who = 0;
argc--, argv++;
if (argc < 2)
usage();
if (strcmp(*argv, "-n") == 0) {
incr = 1;
argc--, argv++;
if (argc == 0)
usage();
}
if (getnum("priority", *argv, &prio))
return 1;
argc--, argv++;
for (; argc > 0; argc--, argv++) {
if (strcmp(*argv, "-g") == 0) {
which = PRIO_PGRP;
continue;
}
if (strcmp(*argv, "-u") == 0) {
which = PRIO_USER;
continue;
}
if (strcmp(*argv, "-p") == 0) {
which = PRIO_PROCESS;
continue;
}
if (which == PRIO_USER) {
struct passwd *pwd = getpwnam(*argv);
if (pwd == NULL) {
warnx("%s: unknown user", *argv);
errs++;
continue;
}
who = (id_t)pwd->pw_uid;
} else {
int twho;
if (getnum("pid", *argv, &twho)) {
errs++;
continue;
}
if (twho < 0) {
warnx("%s: bad value", *argv);
errs++;
continue;
}
who = (id_t)twho;
}
errs += donice(which, who, prio, incr);
}
return errs == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
static int
getnum(const char *com, const char *str, int *val)
{
long v;
char *ep;
errno = 0;
v = strtol(str, &ep, 0);
if (*ep) {
warnx("Bad %s argument: %s", com, str);
return 1;
}
if ((v == LONG_MIN || v == LONG_MAX) && errno == ERANGE) {
warn("Invalid %s argument: %s", com, str);
return 1;
}
*val = (int)v;
return 0;
}
static int
donice(int which, id_t who, int prio, int incr)
{
int oldprio;
errno = 0;
if ((oldprio = getpriority(which, who)) == -1 && errno != 0) {
warn("%d: getpriority", who);
return 1;
}
if (incr)
prio = oldprio + prio;
if (prio > PRIO_MAX)
prio = PRIO_MAX;
if (prio < PRIO_MIN)
prio = PRIO_MIN;
if (setpriority(which, who, prio) == -1) {
warn("%d: setpriority", who);
return 1;
}
(void)printf("%d: old priority %d, new priority %d\n",
who, oldprio, prio);
return 0;
}
static void
usage(void)
{
(void)fprintf(stderr, "Usage: %s [<priority> | -n <incr>] ",
getprogname());
(void)fprintf(stderr, "[[-p] <pids>...] [-g <pgrp>...] ");
(void)fprintf(stderr, "[-u <user>...]\n");
exit(1);
}