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/*
* 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 (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright 2000-2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
** nice
*/
#include <stdio.h>
#include <locale.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
static void usage(void);
int
main(int argc, char *argv[])
{
long nicarg = 10;
(void) setlocale(LC_ALL, "");
#if !defined(TEXT_DOMAIN)
#define TEXT_DOMAIN "SYS_TEST"
#endif
(void) textdomain(TEXT_DOMAIN);
if (argc < 2)
usage();
if (argv[1][0] == '-') {
if (strcmp(argv[1], "--") == 0) {
argv++;
argc--;
} else {
register char *p = argv[1];
char *nicarg_str;
char *end_ptr;
if (*++p == 'n') { /* -n55 new form, XCU4 */
/*
* for situations like -n-10
* else case assigns p instead of argv
*/
if (!(*++p)) {
/* Next arg is priority */
argv++;
argc--;
if (argc < 2)
usage();
nicarg_str = argv[1];
} else {
/* Priority embedded eg. -n-10 */
nicarg_str = p;
}
} else { /* -55 obs form, XCU4 */
nicarg_str = &argv[1][1];
}
nicarg = strtol(nicarg_str, &end_ptr, 10);
if (*end_ptr) {
(void) fprintf(stderr,
gettext("nice: argument must be numeric.\n"));
usage();
}
if( --argc < 2 )
usage();
argv++;
if (strcmp(argv[1], "--") == 0) {
argv++;
argc--;
}
}
}
if (argc < 2)
usage();
errno = 0;
if (nice(nicarg) == -1) {
/*
* Could be an error or a legitimate return value.
* The only error we care about is EINVAL, which will
* be returned by the scheduling class we are in if
* nice is invalid for this class.
* For any error other than EINVAL
* we will go ahead and exec the command even though
* the priority change failed.
*/
if (errno == EINVAL) {
(void) fprintf(stderr, gettext(
"nice: invalid operation; "
"scheduling class does not support nice\n"));
return (2);
}
}
(void) execvp(argv[1], &argv[1]);
(void) fprintf(stderr, gettext("%s: %s\n"), strerror(errno), argv[1]);
/*
* POSIX.2 exit status:
* 127 if utility is not found.
* 126 if utility cannot be invoked.
*/
return (errno == ENOENT || errno == ENOTDIR ? 127 : 126);
}
static void
usage()
{
(void) fprintf(stderr,
gettext("nice: usage: nice [-n increment] utility [argument ...]\n"));
exit(2);
}
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