tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2
3#include "bcachefs.h"
4#include "errcode.h"
5#include "trace.h"
6
7#include <linux/errname.h>
8
9static const char * const bch2_errcode_strs[] = {
10#define x(class, err) [BCH_ERR_##err - BCH_ERR_START] = #err,
11 BCH_ERRCODES()
12#undef x
13 NULL
14};
15
16static const unsigned bch2_errcode_parents[] = {
17#define x(class, err) [BCH_ERR_##err - BCH_ERR_START] = class,
18 BCH_ERRCODES()
19#undef x
20};
21
22__attribute__((const))
23const char *bch2_err_str(int err)
24{
25 const char *errstr;
26
27 err = abs(err);
28
29 BUG_ON(err >= BCH_ERR_MAX);
30
31 if (err >= BCH_ERR_START)
32 errstr = bch2_errcode_strs[err - BCH_ERR_START];
33 else if (err)
34 errstr = errname(err);
35 else
36 errstr = "(No error)";
37 return errstr ?: "(Invalid error)";
38}
39
40__attribute__((const))
41bool __bch2_err_matches(int err, int class)
42{
43 err = abs(err);
44 class = abs(class);
45
46 BUG_ON(err >= BCH_ERR_MAX);
47 BUG_ON(class >= BCH_ERR_MAX);
48
49 while (err >= BCH_ERR_START && err != class)
50 err = bch2_errcode_parents[err - BCH_ERR_START];
51
52 return err == class;
53}
54
55int __bch2_err_class(int bch_err)
56{
57 int std_err = -bch_err;
58 BUG_ON((unsigned) std_err >= BCH_ERR_MAX);
59
60 while (std_err >= BCH_ERR_START && bch2_errcode_parents[std_err - BCH_ERR_START])
61 std_err = bch2_errcode_parents[std_err - BCH_ERR_START];
62
63 trace_error_downcast(bch_err, std_err, _RET_IP_);
64
65 return -std_err;
66}
67
68const char *bch2_blk_status_to_str(blk_status_t status)
69{
70 if (status == BLK_STS_REMOVED)
71 return "device removed";
72 return blk_status_to_str(status);
73}