1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * usage.c 4 * 5 * Various reporting routines. 6 * Originally copied from GIT source. 7 * 8 * Copyright (C) Linus Torvalds, 2005 9 */ 10 #include "util.h" 11 #include <stdio.h> 12 #include <stdlib.h> 13 #include <linux/compiler.h> 14 15 static __noreturn void usage_builtin(const char *err) 16 { 17 fprintf(stderr, "\n Usage: %s\n", err); 18 exit(129); 19 } 20 21 /* If we are in a dlopen()ed .so write to a global variable would segfault 22 * (ugh), so keep things static. */ 23 static void (*usage_routine)(const char *err) __noreturn = usage_builtin; 24 25 void usage(const char *err) 26 { 27 usage_routine(err); 28 } 29