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author | rgrimes <rgrimes@FreeBSD.org> | 1994-05-27 12:33:43 +0000 |
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committer | rgrimes <rgrimes@FreeBSD.org> | 1994-05-27 12:33:43 +0000 |
commit | f9ab90d9d6d02989a075d0f0074496d5b1045e4b (patch) | |
tree | add7e996bac5289cdc55e6935750c352505560a9 /usr.bin/nice/nice.c | |
parent | be22b15ae2ff8d7fe06b6e14fddf0c5b444a95da (diff) | |
download | FreeBSD-src-f9ab90d9d6d02989a075d0f0074496d5b1045e4b.zip FreeBSD-src-f9ab90d9d6d02989a075d0f0074496d5b1045e4b.tar.gz |
BSD 4.4 Lite Usr.bin Sources
Diffstat (limited to 'usr.bin/nice/nice.c')
-rw-r--r-- | usr.bin/nice/nice.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/usr.bin/nice/nice.c b/usr.bin/nice/nice.c new file mode 100644 index 0000000..6b905d9 --- /dev/null +++ b/usr.bin/nice/nice.c @@ -0,0 +1,93 @@ +/* + * Copyright (c) 1989, 1993, 1994 + * 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. 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 + * 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. + */ + +#ifndef lint +static char copyright[] = +"@(#) Copyright (c) 1989, 1993, 1994\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static char sccsid[] = "@(#)nice.c 8.2 (Berkeley) 4/16/94"; +#endif /* not lint */ + +#include <sys/types.h> +#include <sys/time.h> +#include <sys/resource.h> + +#include <ctype.h> +#include <err.h> +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> + +#define DEFNICE 10 + +void usage __P((void)); + +int +main(argc, argv) + int argc; + char *argv[]; +{ + int niceness = DEFNICE; + + if (argv[1][0] == '-') + if (argv[1][1] == '-' || isdigit(argv[1][1])) { + niceness = atoi(argv[1] + 1); + ++argv; + } else + errx(1, "illegal option -- %s", argv[1]); + + if (argv[1] == NULL) + usage(); + + errno = 0; + niceness += getpriority(PRIO_PROCESS, 0); + if (errno) + err(1, "getpriority"); + if (setpriority(PRIO_PROCESS, 0, niceness)) + err(1, "setpriority"); + execvp(argv[1], &argv[1]); + err(1, "%s", argv[1]); +} + +void +usage() +{ + (void)fprintf(stderr, + "nice [ -# ] command [ options ] [ operands ]\n"); + exit(1); +} |