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 "debug.h"
12
13static __noreturn void usage_builtin(const char *err)
 
 
 
 
 
 
 
14{
15	fprintf(stderr, "\n Usage: %s\n", err);
16	exit(129);
17}
18
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
19/* If we are in a dlopen()ed .so write to a global variable would segfault
20 * (ugh), so keep things static. */
21static void (*usage_routine)(const char *err) __noreturn = usage_builtin;
 
 
 
 
 
 
 
 
22
23void usage(const char *err)
24{
25	usage_routine(err);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
26}

 
 1/*
 2 * GIT - The information manager from hell
 
 
 
 3 *
 4 * Copyright (C) Linus Torvalds, 2005
 5 */
 6#include "util.h"
 
 7
 8static void report(const char *prefix, const char *err, va_list params)
 9{
10	char msg[1024];
11	vsnprintf(msg, sizeof(msg), err, params);
12	fprintf(stderr, " %s%s\n", prefix, msg);
13}
14
15static NORETURN void usage_builtin(const char *err)
16{
17	fprintf(stderr, "\n Usage: %s\n", err);
18	exit(129);
19}
20
21static NORETURN void die_builtin(const char *err, va_list params)
22{
23	report(" Fatal: ", err, params);
24	exit(128);
25}
26
27static void error_builtin(const char *err, va_list params)
28{
29	report(" Error: ", err, params);
30}
31
32static void warn_builtin(const char *warn, va_list params)
33{
34	report(" Warning: ", warn, params);
35}
36
37/* If we are in a dlopen()ed .so write to a global variable would segfault
38 * (ugh), so keep things static. */
39static void (*usage_routine)(const char *err) NORETURN = usage_builtin;
40static void (*die_routine)(const char *err, va_list params) NORETURN = die_builtin;
41static void (*error_routine)(const char *err, va_list params) = error_builtin;
42static void (*warn_routine)(const char *err, va_list params) = warn_builtin;
43
44void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN)
45{
46	die_routine = routine;
47}
48
49void usage(const char *err)
50{
51	usage_routine(err);
52}
53
54void die(const char *err, ...)
55{
56	va_list params;
57
58	va_start(params, err);
59	die_routine(err, params);
60	va_end(params);
61}
62
63int error(const char *err, ...)
64{
65	va_list params;
66
67	va_start(params, err);
68	error_routine(err, params);
69	va_end(params);
70	return -1;
71}
72
73void warning(const char *warn, ...)
74{
75	va_list params;
76
77	va_start(params, warn);
78	warn_routine(warn, params);
79	va_end(params);
80}