2010-02-19 00:14:17 +08:00
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/*
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* Error reporting
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*
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* Copyright (C) 2010 Red Hat Inc.
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*
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* Authors:
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* Markus Armbruster <armbru@redhat.com>,
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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2016-01-30 01:49:55 +08:00
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#include "qemu/osdep.h"
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2012-12-18 01:19:49 +08:00
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#include "monitor/monitor.h"
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2015-03-18 01:29:20 +08:00
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#include "qemu/error-report.h"
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2010-02-17 17:55:46 +08:00
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2010-02-19 00:14:17 +08:00
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void error_printf(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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error_vprintf(fmt, ap);
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va_end(ap);
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}
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2010-02-19 17:30:05 +08:00
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void error_printf_unless_qmp(const char *fmt, ...)
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{
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va_list ap;
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2016-10-25 00:31:02 +08:00
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va_start(ap, fmt);
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error_vprintf_unless_qmp(fmt, ap);
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va_end(ap);
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2010-02-19 17:30:05 +08:00
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}
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2010-02-19 02:46:49 +08:00
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static Location std_loc = {
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.kind = LOC_NONE
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};
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static Location *cur_loc = &std_loc;
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/*
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* Push location saved in LOC onto the location stack, return it.
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* The top of that stack is the current location.
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* Needs a matching loc_pop().
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*/
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Location *loc_push_restore(Location *loc)
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{
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assert(!loc->prev);
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loc->prev = cur_loc;
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cur_loc = loc;
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return loc;
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}
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/*
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* Initialize *LOC to "nowhere", push it onto the location stack.
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* The top of that stack is the current location.
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* Needs a matching loc_pop().
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* Return LOC.
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*/
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Location *loc_push_none(Location *loc)
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{
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loc->kind = LOC_NONE;
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loc->prev = NULL;
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return loc_push_restore(loc);
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}
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/*
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* Pop the location stack.
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* LOC must be the current location, i.e. the top of the stack.
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*/
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Location *loc_pop(Location *loc)
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{
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assert(cur_loc == loc && loc->prev);
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cur_loc = loc->prev;
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loc->prev = NULL;
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return loc;
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}
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/*
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* Save the current location in LOC, return LOC.
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*/
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Location *loc_save(Location *loc)
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{
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*loc = *cur_loc;
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loc->prev = NULL;
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return loc;
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}
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/*
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* Change the current location to the one saved in LOC.
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*/
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void loc_restore(Location *loc)
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{
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Location *prev = cur_loc->prev;
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assert(!loc->prev);
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*cur_loc = *loc;
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cur_loc->prev = prev;
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}
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/*
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* Change the current location to "nowhere in particular".
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*/
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void loc_set_none(void)
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{
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cur_loc->kind = LOC_NONE;
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}
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2010-02-19 03:13:51 +08:00
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/*
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* Change the current location to argument ARGV[IDX..IDX+CNT-1].
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*/
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void loc_set_cmdline(char **argv, int idx, int cnt)
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{
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cur_loc->kind = LOC_CMDLINE;
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cur_loc->num = cnt;
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cur_loc->ptr = argv + idx;
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}
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2010-02-19 02:48:33 +08:00
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/*
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* Change the current location to file FNAME, line LNO.
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*/
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void loc_set_file(const char *fname, int lno)
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{
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assert (fname || cur_loc->kind == LOC_FILE);
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cur_loc->kind = LOC_FILE;
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cur_loc->num = lno;
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if (fname) {
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cur_loc->ptr = fname;
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}
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}
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2010-02-24 21:37:14 +08:00
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static const char *progname;
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/*
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* Set the program name for error_print_loc().
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*/
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void error_set_progname(const char *argv0)
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{
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const char *p = strrchr(argv0, '/');
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progname = p ? p + 1 : argv0;
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}
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2011-12-13 09:22:57 +08:00
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const char *error_get_progname(void)
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{
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return progname;
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}
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2010-02-19 02:46:49 +08:00
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/*
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* Print current location to current monitor if we have one, else to stderr.
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*/
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2014-03-22 07:42:22 +08:00
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static void error_print_loc(void)
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2010-02-19 02:46:49 +08:00
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{
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2010-02-24 21:37:14 +08:00
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const char *sep = "";
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2010-02-19 03:13:51 +08:00
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int i;
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const char *const *argp;
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2010-02-24 21:37:14 +08:00
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2010-03-22 17:29:03 +08:00
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if (!cur_mon && progname) {
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2010-02-24 21:37:14 +08:00
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fprintf(stderr, "%s:", progname);
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sep = " ";
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}
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2010-02-19 02:46:49 +08:00
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switch (cur_loc->kind) {
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2010-02-19 03:13:51 +08:00
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case LOC_CMDLINE:
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argp = cur_loc->ptr;
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for (i = 0; i < cur_loc->num; i++) {
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error_printf("%s%s", sep, argp[i]);
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sep = " ";
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}
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error_printf(": ");
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break;
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2010-02-19 02:48:33 +08:00
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case LOC_FILE:
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error_printf("%s:", (const char *)cur_loc->ptr);
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if (cur_loc->num) {
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error_printf("%d:", cur_loc->num);
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}
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error_printf(" ");
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break;
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2010-02-24 21:37:14 +08:00
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default:
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2010-03-23 23:13:03 +08:00
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error_printf("%s", sep);
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2010-02-19 02:46:49 +08:00
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}
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}
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2013-07-04 11:02:46 +08:00
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bool enable_timestamp_msg;
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2010-02-19 00:25:24 +08:00
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/*
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* Print an error message to current monitor if we have one, else to stderr.
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2015-12-18 23:35:08 +08:00
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* Format arguments like vsprintf(). The resulting message should be
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* a single phrase, with no newline or trailing punctuation.
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2010-02-19 02:46:49 +08:00
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* Prepend the current location and append a newline.
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qmp: Wean off qerror_report()
The traditional QMP command handler interface
int qmp_FOO(Monitor *mon, const QDict *params, QObject **ret_data);
doesn't provide for returning an Error object. Instead, the handler
is expected to stash it in the monitor with qerror_report().
When we rebased QMP on top of QAPI, we didn't change this interface.
Instead, commit 776574d introduced "middle mode" as a temporary aid
for converting existing QMP commands to QAPI one by one. More than
three years later, we're still using it.
Middle mode has two effects:
* Instead of the native input marshallers
static void qmp_marshal_input_FOO(QDict *, QObject **, Error **)
it generates input marshallers conforming to the traditional QMP
command handler interface.
* It suppresses generation of code to register them with
qmp_register_command()
This permits giving them internal linkage.
As long as we need qmp-commands.hx, we can't use the registry behind
qmp_register_command(), so the latter has to stay for now.
The former has to go to get rid of qerror_report(). Changing all QMP
commands to fit the QAPI mold in one go was impractical back when we
started, but by now there are just a few stragglers left:
do_qmp_capabilities(), qmp_qom_set(), qmp_qom_get(), qmp_object_add(),
qmp_netdev_add(), do_device_add().
Switch middle mode to generate native input marshallers, and adapt the
stragglers. Simplifies both the monitor code and the stragglers.
Rename do_qmp_capabilities() to qmp_capabilities(), and
do_device_add() to qmp_device_add, because that's how QMP command
handlers are named today.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-03-14 00:25:50 +08:00
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* It's wrong to call this in a QMP monitor. Use error_setg() there.
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2010-02-19 00:25:24 +08:00
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*/
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2014-10-08 20:11:54 +08:00
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void error_vreport(const char *fmt, va_list ap)
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2010-02-19 00:14:17 +08:00
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{
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2013-07-04 11:02:46 +08:00
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GTimeVal tv;
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gchar *timestr;
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2015-08-10 21:15:41 +08:00
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if (enable_timestamp_msg && !cur_mon) {
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2013-07-04 11:02:46 +08:00
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g_get_current_time(&tv);
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timestr = g_time_val_to_iso8601(&tv);
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error_printf("%s ", timestr);
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g_free(timestr);
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}
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2010-02-19 00:14:17 +08:00
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2010-02-19 02:46:49 +08:00
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error_print_loc();
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2010-02-19 00:14:17 +08:00
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error_vprintf(fmt, ap);
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2010-02-19 00:25:24 +08:00
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error_printf("\n");
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2010-02-17 17:55:46 +08:00
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}
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2014-10-08 20:11:54 +08:00
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/*
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* Print an error message to current monitor if we have one, else to stderr.
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2015-12-18 23:35:08 +08:00
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* Format arguments like sprintf(). The resulting message should be a
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* single phrase, with no newline or trailing punctuation.
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2014-10-08 20:11:54 +08:00
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* Prepend the current location and append a newline.
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qmp: Wean off qerror_report()
The traditional QMP command handler interface
int qmp_FOO(Monitor *mon, const QDict *params, QObject **ret_data);
doesn't provide for returning an Error object. Instead, the handler
is expected to stash it in the monitor with qerror_report().
When we rebased QMP on top of QAPI, we didn't change this interface.
Instead, commit 776574d introduced "middle mode" as a temporary aid
for converting existing QMP commands to QAPI one by one. More than
three years later, we're still using it.
Middle mode has two effects:
* Instead of the native input marshallers
static void qmp_marshal_input_FOO(QDict *, QObject **, Error **)
it generates input marshallers conforming to the traditional QMP
command handler interface.
* It suppresses generation of code to register them with
qmp_register_command()
This permits giving them internal linkage.
As long as we need qmp-commands.hx, we can't use the registry behind
qmp_register_command(), so the latter has to stay for now.
The former has to go to get rid of qerror_report(). Changing all QMP
commands to fit the QAPI mold in one go was impractical back when we
started, but by now there are just a few stragglers left:
do_qmp_capabilities(), qmp_qom_set(), qmp_qom_get(), qmp_object_add(),
qmp_netdev_add(), do_device_add().
Switch middle mode to generate native input marshallers, and adapt the
stragglers. Simplifies both the monitor code and the stragglers.
Rename do_qmp_capabilities() to qmp_capabilities(), and
do_device_add() to qmp_device_add, because that's how QMP command
handlers are named today.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Luiz Capitulino <lcapitulino@redhat.com>
2015-03-14 00:25:50 +08:00
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* It's wrong to call this in a QMP monitor. Use error_setg() there.
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2014-10-08 20:11:54 +08:00
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*/
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void error_report(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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error_vreport(fmt, ap);
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va_end(ap);
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}
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