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// SPDX-License-Identifier: GPL-2.0
#include "bcachefs.h"
#include "errcode.h"
#include <linux/errname.h>
static const char * const bch2_errcode_strs[] = {
#define x(class, err) [BCH_ERR_##err - BCH_ERR_START] = #err,
BCH_ERRCODES()
#undef x
NULL
};
#define BCH_ERR_0 0
static unsigned bch2_errcode_parents[] = {
#define x(class, err) [BCH_ERR_##err - BCH_ERR_START] = class,
BCH_ERRCODES()
#undef x
};
const char *bch2_err_str(int err)
{
const char *errstr;
err = abs(err);
BUG_ON(err >= BCH_ERR_MAX);
if (err >= BCH_ERR_START)
errstr = bch2_errcode_strs[err - BCH_ERR_START];
else if (err)
errstr = errname(err);
else
errstr = "(No error)";
return errstr ?: "(Invalid error)";
}
bool __bch2_err_matches(int err, int class)
{
err = abs(err);
class = abs(class);
BUG_ON(err >= BCH_ERR_MAX);
BUG_ON(class >= BCH_ERR_MAX);
while (err >= BCH_ERR_START && err != class)
err = bch2_errcode_parents[err - BCH_ERR_START];
return err == class;
}
int __bch2_err_class(int err)
{
err = -err;
BUG_ON((unsigned) err >= BCH_ERR_MAX);
while (err >= BCH_ERR_START && bch2_errcode_parents[err - BCH_ERR_START])
err = bch2_errcode_parents[err - BCH_ERR_START];
return -err;
}
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