1 /* renice.c - renice process 2 * 3 * Copyright 2013 CE Strake <strake888 at gmail.com> 4 * 5 * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/renice.html 6 7 USE_RENICE(NEWTOY(renice, "<1gpun#|", TOYFLAG_USR|TOYFLAG_BIN)) 8 9 config RENICE 10 bool "renice" 11 default y 12 help 13 usage: renice [-gpu] -n INCREMENT ID... 14 */ 15 16 #define FOR_renice 17 #include "toys.h" 18 GLOBALS(long n;)19GLOBALS( 20 long n; 21 ) 22 23 void renice_main(void) { 24 int which = (toys.optflags & FLAG_g) ? PRIO_PGRP : 25 ((toys.optflags & FLAG_u) ? PRIO_USER : PRIO_PROCESS); 26 char **arg; 27 28 for (arg = toys.optargs; *arg; arg++) { 29 char *s = *arg; 30 int id = -1; 31 32 if (toys.optflags & FLAG_u) { 33 struct passwd *p = getpwnam(s); 34 if (p) id = p->pw_uid; 35 } else { 36 id = strtol(s, &s, 10); 37 if (*s) id = -1; 38 } 39 40 if (id < 0) { 41 error_msg("bad '%s'", *arg); 42 continue; 43 } 44 45 if (setpriority(which, id, getpriority(which, id)+TT.n) < 0) 46 perror_msg("setpriority %d", id); 47 } 48 } 49