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crm_error.c
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/*
* Copyright 2012-2024 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU General Public License version 2
* or later (GPLv2+) WITHOUT ANY WARRANTY.
*/
#include <crm_internal.h>
#include <crm/common/xml.h>
#include <crm/common/cmdline_internal.h>
#include <crm/common/output_internal.h>
#include <crm/common/strings_internal.h>
#include <crm/crm.h>
#include <pacemaker-internal.h>
#define SUMMARY "crm_error - display name or description of a Pacemaker error code"
struct {
gboolean with_name;
gboolean do_list;
enum pcmk_result_type result_type; // How to interpret result codes
} options = {
.result_type = pcmk_result_legacy,
};
static gboolean
result_type_cb(const gchar *option_name, const gchar *optarg, gpointer data,
GError **error)
{
if (pcmk__str_any_of(option_name, "--exit", "-X", NULL)) {
options.result_type = pcmk_result_exitcode;
} else if (pcmk__str_any_of(option_name, "--rc", "-r", NULL)) {
options.result_type = pcmk_result_rc;
}
return TRUE;
}
static GOptionEntry entries[] = {
{ "name", 'n', 0, G_OPTION_ARG_NONE, &options.with_name,
"Show error's name with its description (useful for looking for sources "
"of the error in source code)",
NULL },
{ "list", 'l', 0, G_OPTION_ARG_NONE, &options.do_list,
"Show all known errors (enabled by default if no rc is specified)",
NULL },
{ "exit", 'X', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, result_type_cb,
"Interpret as exit code rather than legacy function return value",
NULL },
{ "rc", 'r', G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK, result_type_cb,
"Interpret as return code rather than legacy function return value",
NULL },
{ NULL }
};
static pcmk__supported_format_t formats[] = {
PCMK__SUPPORTED_FORMAT_NONE,
PCMK__SUPPORTED_FORMAT_TEXT,
PCMK__SUPPORTED_FORMAT_XML,
{ NULL, NULL, NULL }
};
static GOptionContext *
build_arg_context(pcmk__common_args_t *args, GOptionGroup **group) {
GOptionContext *context = NULL;
context = pcmk__build_arg_context(args, "text (default), xml", group,
"[-- <rc> [<rc>...]]");
pcmk__add_main_args(context, entries);
return context;
}
int
main(int argc, char **argv)
{
crm_exit_t exit_code = CRM_EX_OK;
int rc = pcmk_rc_ok;
pcmk__output_t *out = NULL;
GError *error = NULL;
GOptionGroup *output_group = NULL;
pcmk__common_args_t *args = pcmk__new_common_args(SUMMARY);
gchar **processed_args = pcmk__cmdline_preproc(argv, NULL);
GOptionContext *context = build_arg_context(args, &output_group);
pcmk__register_formats(output_group, formats);
if (!g_option_context_parse_strv(context, &processed_args, &error)) {
exit_code = CRM_EX_USAGE;
goto done;
}
pcmk__cli_init_logging("crm_error", args->verbosity);
rc = pcmk__output_new(&out, args->output_ty, args->output_dest, argv);
if (rc != pcmk_rc_ok) {
exit_code = CRM_EX_ERROR;
g_set_error(&error, PCMK__EXITC_ERROR, exit_code,
"Error creating output format %s: %s", args->output_ty,
pcmk_rc_str(rc));
goto done;
}
if (g_strv_length(processed_args) < 2) {
// If no result codes were specified, list them all
options.do_list = TRUE;
}
if (args->version) {
out->version(out, false);
goto done;
}
pcmk__register_lib_messages(out);
if (options.do_list) {
uint32_t flags = pcmk_rc_disp_code|pcmk_rc_disp_desc;
if (options.with_name) {
flags = pcmk__set_flags_as(__func__, __LINE__, LOG_TRACE,
"pcmk_rc_disp_flags",
"pcmk__list_result_codes", flags,
pcmk_rc_disp_name, "pcmk_rc_disp_name");
}
pcmk__list_result_codes(out, options.result_type, flags);
} else {
uint32_t flags = pcmk_rc_disp_desc;
// For text output, print only "[name -] description" by default
if (args->verbosity > 0) {
flags = pcmk__set_flags_as(__func__, __LINE__, LOG_TRACE,
"pcmk_rc_disp_flags",
"pcmk__show_result_code", flags,
pcmk_rc_disp_code, "pcmk_rc_disp_code");
}
if (options.with_name) {
flags = pcmk__set_flags_as(__func__, __LINE__, LOG_TRACE,
"pcmk_rc_disp_flags",
"pcmk__show_result_code", flags,
pcmk_rc_disp_name, "pcmk_rc_disp_name");
}
/* Skip #1 because that's the program name. */
for (int lpc = 1; processed_args[lpc] != NULL; lpc++) {
int code = 0;
if (pcmk__str_eq(processed_args[lpc], "--", pcmk__str_none)) {
continue;
}
pcmk__scan_min_int(processed_args[lpc], &code, INT_MIN);
pcmk__show_result_code(out, code, options.result_type, flags);
}
}
done:
g_strfreev(processed_args);
pcmk__free_arg_context(context);
pcmk__output_and_clear_error(&error, out);
if (out != NULL) {
out->finish(out, exit_code, true, NULL);
pcmk__output_free(out);
}
pcmk__unregister_formats();
crm_exit(exit_code);
}

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