| /* See LICENSE file for copyright and license details. */ |
| #include <sys/resource.h> |
| |
| #include <errno.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| |
| #include "util.h" |
| |
| #ifndef PRIO_MIN |
| #define PRIO_MIN -NZERO |
| #endif |
| |
| #ifndef PRIO_MAX |
| #define PRIO_MAX (NZERO-1) |
| #endif |
| |
| static void |
| usage(void) |
| { |
| eprintf("usage: %s [-n inc] cmd [arg ...]\n", argv0); |
| } |
| |
| int |
| main(int argc, char *argv[]) |
| { |
| int val = 10, r, savederrno; |
| |
| ARGBEGIN { |
| case 'n': |
| val = estrtonum(EARGF(usage()), PRIO_MIN, PRIO_MAX); |
| break; |
| default: |
| usage(); |
| break; |
| } ARGEND |
| |
| if (!argc) |
| usage(); |
| |
| errno = 0; |
| r = getpriority(PRIO_PROCESS, 0); |
| if (errno) |
| weprintf("getpriority:"); |
| else |
| val += r; |
| LIMIT(val, PRIO_MIN, PRIO_MAX); |
| if (setpriority(PRIO_PROCESS, 0, val) < 0) |
| weprintf("setpriority:"); |
| |
| execvp(argv[0], argv); |
| savederrno = errno; |
| weprintf("execvp %s:", argv[0]); |
| |
| _exit(126 + (savederrno == ENOENT)); |
| } |