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1/*
2 * Error reporting
3 *
4 * Copyright (C) 2010 Red Hat Inc.
5 *
6 * Authors:
7 * Markus Armbruster <armbru@redhat.com>,
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2 or later.
10 * See the COPYING file in the top-level directory.
11 */
12
aafd7584 13#include "qemu/osdep.h"
83c9089e 14#include "monitor/monitor.h"
d49b6836 15#include "qemu/error-report.h"
b4a51f7f 16
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17/*
18 * @report_type is the type of message: error, warning or
19 * informational.
20 */
21typedef enum {
22 REPORT_TYPE_ERROR,
23 REPORT_TYPE_WARNING,
24 REPORT_TYPE_INFO,
25} report_type;
26
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MA
27void error_printf(const char *fmt, ...)
28{
29 va_list ap;
30
31 va_start(ap, fmt);
32 error_vprintf(fmt, ap);
33 va_end(ap);
34}
35
aa924ae7
MA
36void error_printf_unless_qmp(const char *fmt, ...)
37{
38 va_list ap;
39
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40 va_start(ap, fmt);
41 error_vprintf_unless_qmp(fmt, ap);
42 va_end(ap);
aa924ae7
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43}
44
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45static Location std_loc = {
46 .kind = LOC_NONE
47};
48static Location *cur_loc = &std_loc;
49
50/*
51 * Push location saved in LOC onto the location stack, return it.
52 * The top of that stack is the current location.
53 * Needs a matching loc_pop().
54 */
55Location *loc_push_restore(Location *loc)
56{
57 assert(!loc->prev);
58 loc->prev = cur_loc;
59 cur_loc = loc;
60 return loc;
61}
62
63/*
64 * Initialize *LOC to "nowhere", push it onto the location stack.
65 * The top of that stack is the current location.
66 * Needs a matching loc_pop().
67 * Return LOC.
68 */
69Location *loc_push_none(Location *loc)
70{
71 loc->kind = LOC_NONE;
72 loc->prev = NULL;
73 return loc_push_restore(loc);
74}
75
76/*
77 * Pop the location stack.
78 * LOC must be the current location, i.e. the top of the stack.
79 */
80Location *loc_pop(Location *loc)
81{
82 assert(cur_loc == loc && loc->prev);
83 cur_loc = loc->prev;
84 loc->prev = NULL;
85 return loc;
86}
87
88/*
89 * Save the current location in LOC, return LOC.
90 */
91Location *loc_save(Location *loc)
92{
93 *loc = *cur_loc;
94 loc->prev = NULL;
95 return loc;
96}
97
98/*
99 * Change the current location to the one saved in LOC.
100 */
101void loc_restore(Location *loc)
102{
103 Location *prev = cur_loc->prev;
104 assert(!loc->prev);
105 *cur_loc = *loc;
106 cur_loc->prev = prev;
107}
108
109/*
110 * Change the current location to "nowhere in particular".
111 */
112void loc_set_none(void)
113{
114 cur_loc->kind = LOC_NONE;
115}
116
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MA
117/*
118 * Change the current location to argument ARGV[IDX..IDX+CNT-1].
119 */
120void loc_set_cmdline(char **argv, int idx, int cnt)
121{
122 cur_loc->kind = LOC_CMDLINE;
123 cur_loc->num = cnt;
124 cur_loc->ptr = argv + idx;
125}
126
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MA
127/*
128 * Change the current location to file FNAME, line LNO.
129 */
130void loc_set_file(const char *fname, int lno)
131{
132 assert (fname || cur_loc->kind == LOC_FILE);
133 cur_loc->kind = LOC_FILE;
134 cur_loc->num = lno;
135 if (fname) {
136 cur_loc->ptr = fname;
137 }
138}
139
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140static const char *progname;
141
142/*
143 * Set the program name for error_print_loc().
144 */
145void error_set_progname(const char *argv0)
146{
147 const char *p = strrchr(argv0, '/');
148 progname = p ? p + 1 : argv0;
149}
150
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151const char *error_get_progname(void)
152{
153 return progname;
154}
155
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156/*
157 * Print current location to current monitor if we have one, else to stderr.
158 */
beeb175c 159static void print_loc(void)
827b0813 160{
65abca0a 161 const char *sep = "";
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162 int i;
163 const char *const *argp;
65abca0a 164
6627f645 165 if (!cur_mon && progname) {
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166 fprintf(stderr, "%s:", progname);
167 sep = " ";
168 }
827b0813 169 switch (cur_loc->kind) {
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170 case LOC_CMDLINE:
171 argp = cur_loc->ptr;
172 for (i = 0; i < cur_loc->num; i++) {
173 error_printf("%s%s", sep, argp[i]);
174 sep = " ";
175 }
176 error_printf(": ");
177 break;
cf5a65aa
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178 case LOC_FILE:
179 error_printf("%s:", (const char *)cur_loc->ptr);
180 if (cur_loc->num) {
181 error_printf("%d:", cur_loc->num);
182 }
183 error_printf(" ");
184 break;
65abca0a 185 default:
bb334b12 186 error_printf("%s", sep);
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187 }
188}
189
5e2ac519 190bool enable_timestamp_msg;
1ecda02b 191/*
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192 * Print a message to current monitor if we have one, else to stderr.
193 * @report_type is the type of message: error, warning or informational.
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194 * Format arguments like vsprintf(). The resulting message should be
195 * a single phrase, with no newline or trailing punctuation.
827b0813 196 * Prepend the current location and append a newline.
485febc6 197 * It's wrong to call this in a QMP monitor. Use error_setg() there.
1ecda02b 198 */
97f40301 199static void vreport(report_type type, const char *fmt, va_list ap)
ba0fe87a 200{
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SA
201 GTimeVal tv;
202 gchar *timestr;
203
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MA
204 if (enable_timestamp_msg && !cur_mon) {
205 g_get_current_time(&tv);
206 timestr = g_time_val_to_iso8601(&tv);
207 error_printf("%s ", timestr);
208 g_free(timestr);
209 }
210
211 print_loc();
212
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213 switch (type) {
214 case REPORT_TYPE_ERROR:
215 break;
216 case REPORT_TYPE_WARNING:
217 error_printf("warning: ");
218 break;
219 case REPORT_TYPE_INFO:
220 error_printf("info: ");
221 break;
222 }
223
ba0fe87a 224 error_vprintf(fmt, ap);
1ecda02b 225 error_printf("\n");
b4a51f7f 226}
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227
228/*
229 * Print an error message to current monitor if we have one, else to stderr.
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230 * Format arguments like vsprintf(). The resulting message should be
231 * a single phrase, with no newline or trailing punctuation.
232 * Prepend the current location and append a newline.
233 * It's wrong to call this in a QMP monitor. Use error_setg() there.
234 */
235void error_vreport(const char *fmt, va_list ap)
236{
237 vreport(REPORT_TYPE_ERROR, fmt, ap);
238}
239
240/*
241 * Print a warning message to current monitor if we have one, else to stderr.
242 * Format arguments like vsprintf(). The resulting message should be
243 * a single phrase, with no newline or trailing punctuation.
244 * Prepend the current location and append a newline.
245 * It's wrong to call this in a QMP monitor. Use error_setg() there.
246 */
247void warn_vreport(const char *fmt, va_list ap)
248{
249 vreport(REPORT_TYPE_WARNING, fmt, ap);
250}
251
252/*
253 * Print an information message to current monitor if we have one, else to
254 * stderr.
255 * Format arguments like vsprintf(). The resulting message should be
256 * a single phrase, with no newline or trailing punctuation.
257 * Prepend the current location and append a newline.
258 * It's wrong to call this in a QMP monitor. Use error_setg() there.
259 */
260void info_vreport(const char *fmt, va_list ap)
261{
262 vreport(REPORT_TYPE_INFO, fmt, ap);
263}
264
265/*
266 * Print an error message to current monitor if we have one, else to stderr.
267 * Format arguments like sprintf(). The resulting message should be
268 * a single phrase, with no newline or trailing punctuation.
5748e4c2 269 * Prepend the current location and append a newline.
485febc6 270 * It's wrong to call this in a QMP monitor. Use error_setg() there.
5748e4c2
CM
271 */
272void error_report(const char *fmt, ...)
273{
274 va_list ap;
275
276 va_start(ap, fmt);
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277 vreport(REPORT_TYPE_ERROR, fmt, ap);
278 va_end(ap);
279}
280
281/*
282 * Print a warning message to current monitor if we have one, else to stderr.
283 * Format arguments like sprintf(). The resulting message should be a
284 * single phrase, with no newline or trailing punctuation.
285 * Prepend the current location and append a newline.
286 * It's wrong to call this in a QMP monitor. Use error_setg() there.
287 */
288void warn_report(const char *fmt, ...)
289{
290 va_list ap;
291
292 va_start(ap, fmt);
293 vreport(REPORT_TYPE_WARNING, fmt, ap);
294 va_end(ap);
295}
296
297/*
298 * Print an information message to current monitor if we have one, else to
299 * stderr.
300 * Format arguments like sprintf(). The resulting message should be a
301 * single phrase, with no newline or trailing punctuation.
302 * Prepend the current location and append a newline.
303 * It's wrong to call this in a QMP monitor. Use error_setg() there.
304 */
305void info_report(const char *fmt, ...)
306{
307 va_list ap;
308
309 va_start(ap, fmt);
310 vreport(REPORT_TYPE_INFO, fmt, ap);
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311 va_end(ap);
312}