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qemu/error.h
Luiz Capitulino d3608b7cc6 Error: Fix build when qemu-common.h is not included
Commit e4ea5e2d0e added the use of
the macro GCC_FMT_ATTR to error.h, however compiler.h is not
included by error.h

This will cause a build error when files including error.h
don't include qemu-common.h (or compiler.h). Not an issue today
because the only file including it is json-parser.h and it does
include qemu-common.h, but let's get it fixed.

Signed-off-by: Luiz Capitulino <lcapitulino@gmail.com>
2011-07-21 16:48:13 -03:00

71 lines
1.7 KiB
C

/*
* QEMU Error Objects
*
* Copyright IBM, Corp. 2011
*
* Authors:
* Anthony Liguori <aliguori@us.ibm.com>
*
* This work is licensed under the terms of the GNU LGPL, version 2. See
* the COPYING.LIB file in the top-level directory.
*/
#ifndef ERROR_H
#define ERROR_H
#include "compiler.h"
#include <stdbool.h>
/**
* A class representing internal errors within QEMU. An error has a string
* typename and optionally a set of named string parameters.
*/
typedef struct Error Error;
/**
* Set an indirect pointer to an error given a printf-style format parameter.
* Currently, qerror.h defines these error formats. This function is not
* meant to be used outside of QEMU.
*/
void error_set(Error **err, const char *fmt, ...) GCC_FMT_ATTR(2, 3);
/**
* Returns true if an indirect pointer to an error is pointing to a valid
* error object.
*/
bool error_is_set(Error **err);
/**
* Get a human readable representation of an error object.
*/
const char *error_get_pretty(Error *err);
/**
* Get an individual named error field.
*/
const char *error_get_field(Error *err, const char *field);
/**
* Get an individual named error field.
*/
void error_set_field(Error *err, const char *field, const char *value);
/**
* Propagate an error to an indirect pointer to an error. This function will
* always transfer ownership of the error reference and handles the case where
* dst_err is NULL correctly.
*/
void error_propagate(Error **dst_err, Error *local_err);
/**
* Free an error object.
*/
void error_free(Error *err);
/**
* Determine if an error is of a speific type (based on the qerror format).
* Non-QEMU users should get the `class' field to identify the error type.
*/
bool error_is_type(Error *err, const char *fmt);
#endif