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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_ERRNAME_H
#define _LINUX_ERRNAME_H
#include <linux/stddef.h>
#ifdef CONFIG_SYMBOLIC_ERRNAME
const char *errname(int err);
#include <linux/codetag.h>
struct codetag_error_code {
const char *str;
int err;
};
/**
* ERR - return an error code that records the error site
*
* E.g., instead of
* return -ENOMEM;
* Use
* return -ERR(ENOMEM);
*
* Then, when a caller prints out the error with errname(), the error string
* will include the file and line number.
*/
#define ERR(_err) \
({ \
static struct codetag_error_code \
__used \
__section("error_code_tags") \
__aligned(8) e = { \
.str = #_err " at " __FILE__ ":" __stringify(__LINE__),\
.err = _err, \
}; \
\
e.err; \
})
int error_class(int err);
bool error_matches(int err, int class);
#else
static inline int error_class(int err)
{
return err;
}
static inline bool error_matches(int err, int class)
{
return err == class;
}
#define ERR(_err) _err
static inline const char *errname(int err)
{
return NULL;
}
#endif
#endif /* _LINUX_ERRNAME_H */
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