|
|
1.1 ! root 1: /* ! 2: * Copyright (c) 1980 Regents of the University of California. ! 3: * All rights reserved. The Berkeley software License Agreement ! 4: * specifies the terms and conditions for redistribution. ! 5: */ ! 6: ! 7: #ifndef lint ! 8: char copyright[] = ! 9: "@(#) Copyright (c) 1980 Regents of the University of California.\n\ ! 10: All rights reserved.\n"; ! 11: #endif not lint ! 12: ! 13: #ifndef lint ! 14: static char sccsid[] = "@(#)renice.c 5.1 (Berkeley) 5/28/85"; ! 15: #endif not lint ! 16: ! 17: #include <sys/time.h> ! 18: #include <sys/resource.h> ! 19: #include <stdio.h> ! 20: #include <pwd.h> ! 21: ! 22: /* ! 23: * Change the priority (nice) of processes ! 24: * or groups of processes which are already ! 25: * running. ! 26: */ ! 27: main(argc, argv) ! 28: char **argv; ! 29: { ! 30: int which = PRIO_PROCESS; ! 31: int who = 0, prio, errs = 0; ! 32: ! 33: argc--, argv++; ! 34: if (argc < 2) { ! 35: fprintf(stderr, "usage: renice priority [ [ -p ] pids ] "); ! 36: fprintf(stderr, "[ [ -g ] pgrps ] [ [ -u ] users ]\n"); ! 37: exit(1); ! 38: } ! 39: prio = atoi(*argv); ! 40: argc--, argv++; ! 41: if (prio > PRIO_MAX) ! 42: prio = PRIO_MAX; ! 43: if (prio < PRIO_MIN) ! 44: prio = PRIO_MIN; ! 45: for (; argc > 0; argc--, argv++) { ! 46: if (strcmp(*argv, "-g") == 0) { ! 47: which = PRIO_PGRP; ! 48: continue; ! 49: } ! 50: if (strcmp(*argv, "-u") == 0) { ! 51: which = PRIO_USER; ! 52: continue; ! 53: } ! 54: if (strcmp(*argv, "-p") == 0) { ! 55: which = PRIO_PROCESS; ! 56: continue; ! 57: } ! 58: if (which == PRIO_USER) { ! 59: register struct passwd *pwd = getpwnam(*argv); ! 60: ! 61: if (pwd == NULL) { ! 62: fprintf(stderr, "renice: %s: unknown user\n", ! 63: *argv); ! 64: continue; ! 65: } ! 66: who = pwd->pw_uid; ! 67: } else { ! 68: who = atoi(*argv); ! 69: if (who < 0) { ! 70: fprintf(stderr, "renice: %s: bad value\n", ! 71: *argv); ! 72: continue; ! 73: } ! 74: } ! 75: errs += donice(which, who, prio); ! 76: } ! 77: exit(errs != 0); ! 78: } ! 79: ! 80: donice(which, who, prio) ! 81: int which, who, prio; ! 82: { ! 83: int oldprio; ! 84: extern int errno; ! 85: ! 86: errno = 0, oldprio = getpriority(which, who); ! 87: if (oldprio == -1 && errno) { ! 88: fprintf(stderr, "renice: %d: ", who); ! 89: perror("getpriority"); ! 90: return (1); ! 91: } ! 92: if (setpriority(which, who, prio) < 0) { ! 93: fprintf(stderr, "renice: %d: ", who); ! 94: perror("setpriority"); ! 95: return (1); ! 96: } ! 97: printf("%d: old priority %d, new priority %d\n", who, oldprio, prio); ! 98: return (0); ! 99: }
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.