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
9 static 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
16 static 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 const char *bch2_err_str(int err)
23 {
24 const char *errstr;
25
26 err = abs(err);
27
28 BUG_ON(err >= BCH_ERR_MAX);
29
30 if (err >= BCH_ERR_START)
31 errstr = bch2_errcode_strs[err - BCH_ERR_START];
32 else if (err)
33 errstr = errname(err);
34 else
35 errstr = "(No error)";
36 return errstr ?: "(Invalid error)";
37 }
38
39 bool __bch2_err_matches(int err, int class)
40 {
41 err = abs(err);
42 class = abs(class);
43
44 BUG_ON(err >= BCH_ERR_MAX);
45 BUG_ON(class >= BCH_ERR_MAX);
46
47 while (err >= BCH_ERR_START && err != class)
48 err = bch2_errcode_parents[err - BCH_ERR_START];
49
50 return err == class;
51 }
52
53 int __bch2_err_class(int bch_err)
54 {
55 int std_err = -bch_err;
56 BUG_ON((unsigned) std_err >= BCH_ERR_MAX);
57
58 while (std_err >= BCH_ERR_START && bch2_errcode_parents[std_err - BCH_ERR_START])
59 std_err = bch2_errcode_parents[std_err - BCH_ERR_START];
60
61 trace_error_downcast(bch_err, std_err, _RET_IP_);
62
63 return -std_err;
64 }
65
66 const char *bch2_blk_status_to_str(blk_status_t status)
67 {
68 if (status == BLK_STS_REMOVED)
69 return "device removed";
70 return blk_status_to_str(status);
71 }
72
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