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// SPDX-License-Identifier: GPL-3.0-or-later
/*
* Copyright (C) 2015 - 2017 Red Hat, Inc.
*
* Author: Gris Ge <fge@redhat.com>
* Todd Gill <tgill@redhat.com>
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <errno.h>
#include <limits.h>
#include <assert.h>
#include <json.h>
#include "libdmmp/libdmmp.h"
#include "libdmmp_private.h"
#define DMMP_LOG_STRERR_ALIGN_WIDTH 80
/* ^ Only used in dmmp_log_stderr() for pretty log output.
* When provided log message is less than 80 bytes, fill it with space, then
* print code file name, function name, line after the 80th bytes.
*/
static const struct _num_str_conv _DMMP_RC_MSG_CONV[] = {
{DMMP_OK, "OK"},
{DMMP_ERR_NO_MEMORY, "Out of memory"},
{DMMP_ERR_BUG, "BUG of libdmmp library"},
{DMMP_ERR_IPC_TIMEOUT, "Timeout when communicate with multipathd, "
"try to increase it via "
"dmmp_context_timeout_set()"},
{DMMP_ERR_IPC_ERROR, "Error when communicate with multipathd daemon"},
{DMMP_ERR_NO_DAEMON, "The multipathd daemon not started"},
{DMMP_ERR_INCOMPATIBLE, "Incompatible multipathd daemon version"},
{DMMP_ERR_MPATH_BUSY, "Specified multipath device map is in use"},
{DMMP_ERR_MPATH_NOT_FOUND, "Specified multipath not found"},
{DMMP_ERR_INVALID_ARGUMENT, "Invalid argument"},
{DMMP_ERR_PERMISSION_DENY, "Permission deny"},
};
_dmmp_str_func_gen(dmmp_strerror, int, rc, _DMMP_RC_MSG_CONV);
static const struct _num_str_conv _DMMP_PRI_CONV[] = {
{DMMP_LOG_PRIORITY_DEBUG, "DEBUG"},
{DMMP_LOG_PRIORITY_INFO, "INFO"},
{DMMP_LOG_PRIORITY_WARNING, "WARNING"},
{DMMP_LOG_PRIORITY_ERROR, "ERROR"},
};
_dmmp_str_func_gen(dmmp_log_priority_str, int, priority, _DMMP_PRI_CONV);
void dmmp_log_stderr(struct dmmp_context *ctx, int priority,
const char *file, int line, const char *func_name,
const char *format, va_list args)
{
int printed_bytes = 0;
void *userdata = NULL;
printed_bytes += fprintf(stderr, "libdmmp %s: ",
dmmp_log_priority_str(priority));
printed_bytes += vfprintf(stderr, format, args);
userdata = dmmp_context_userdata_get(ctx);
if (userdata != NULL)
fprintf(stderr, "(userdata address: %p)",
userdata);
/* ^ Just demonstrate how userdata could be used and
* bypass clang static analyzer about unused ctx argument warning
*/
if (printed_bytes < DMMP_LOG_STRERR_ALIGN_WIDTH) {
fprintf(stderr, "%*s # %s:%s():%d\n",
DMMP_LOG_STRERR_ALIGN_WIDTH - printed_bytes, "", file,
func_name, line);
} else {
fprintf(stderr, " # %s:%s():%d\n", file, func_name, line);
}
}
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