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