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// SPDX-License-Identifier: GPL-2.0
#include "bcachefs.h"
#include "sb-errors.h"
#include "super-io.h"
static const char * const bch2_sb_error_strs[] = {
#define x(t, n, ...) [n] = #t,
BCH_SB_ERRS()
NULL
};
static void bch2_sb_error_id_to_text(struct printbuf *out, enum bch_sb_error_id id)
{
if (id < BCH_SB_ERR_MAX)
prt_str(out, bch2_sb_error_strs[id]);
else
prt_printf(out, "(unknown error %u)", id);
}
static inline unsigned bch2_sb_field_errors_nr_entries(struct bch_sb_field_errors *e)
{
return e
? (bch2_sb_field_bytes(&e->field) - sizeof(*e)) / sizeof(e->entries[0])
: 0;
}
static inline unsigned bch2_sb_field_errors_u64s(unsigned nr)
{
return (sizeof(struct bch_sb_field_errors) +
sizeof(struct bch_sb_field_error_entry) * nr) / sizeof(u64);
}
static int bch2_sb_errors_validate(struct bch_sb *sb, struct bch_sb_field *f,
struct printbuf *err)
{
struct bch_sb_field_errors *e = field_to_type(f, errors);
unsigned i, nr = bch2_sb_field_errors_nr_entries(e);
for (i = 0; i < nr; i++) {
if (!BCH_SB_ERROR_ENTRY_NR(&e->entries[i])) {
prt_printf(err, "entry with count 0 (id ");
bch2_sb_error_id_to_text(err, BCH_SB_ERROR_ENTRY_ID(&e->entries[i]));
prt_printf(err, ")");
return -BCH_ERR_invalid_sb_errors;
}
if (i + 1 < nr &&
BCH_SB_ERROR_ENTRY_ID(&e->entries[i]) >=
BCH_SB_ERROR_ENTRY_ID(&e->entries[i + 1])) {
prt_printf(err, "entries out of order");
return -BCH_ERR_invalid_sb_errors;
}
}
return 0;
}
static void bch2_sb_errors_to_text(struct printbuf *out, struct bch_sb *sb,
struct bch_sb_field *f)
{
struct bch_sb_field_errors *e = field_to_type(f, errors);
unsigned i, nr = bch2_sb_field_errors_nr_entries(e);
if (out->nr_tabstops <= 1)
printbuf_tabstop_push(out, 16);
for (i = 0; i < nr; i++) {
bch2_sb_error_id_to_text(out, BCH_SB_ERROR_ENTRY_ID(&e->entries[i]));
prt_tab(out);
prt_u64(out, BCH_SB_ERROR_ENTRY_NR(&e->entries[i]));
prt_tab(out);
bch2_prt_datetime(out, le64_to_cpu(e->entries[i].last_error_time));
prt_newline(out);
}
}
const struct bch_sb_field_ops bch_sb_field_ops_errors = {
.validate = bch2_sb_errors_validate,
.to_text = bch2_sb_errors_to_text,
};
void bch2_sb_error_count(struct bch_fs *c, enum bch_sb_error_id err)
{
bch_sb_errors_cpu *e = &c->fsck_error_counts;
struct bch_sb_error_entry_cpu n = {
.id = err,
.nr = 1,
.last_error_time = ktime_get_real_seconds()
};
unsigned i;
mutex_lock(&c->fsck_error_counts_lock);
for (i = 0; i < e->nr; i++) {
if (err == e->data[i].id) {
e->data[i].nr++;
e->data[i].last_error_time = n.last_error_time;
goto out;
}
if (err < e->data[i].id)
break;
}
if (darray_make_room(e, 1))
goto out;
darray_insert_item(e, i, n);
out:
mutex_unlock(&c->fsck_error_counts_lock);
}
void bch2_sb_errors_from_cpu(struct bch_fs *c)
{
bch_sb_errors_cpu *src = &c->fsck_error_counts;
struct bch_sb_field_errors *dst =
bch2_sb_field_resize(&c->disk_sb, errors,
bch2_sb_field_errors_u64s(src->nr));
unsigned i;
if (!dst)
return;
for (i = 0; i < src->nr; i++) {
SET_BCH_SB_ERROR_ENTRY_ID(&dst->entries[i], src->data[i].id);
SET_BCH_SB_ERROR_ENTRY_NR(&dst->entries[i], src->data[i].nr);
dst->entries[i].last_error_time = cpu_to_le64(src->data[i].last_error_time);
}
}
static int bch2_sb_errors_to_cpu(struct bch_fs *c)
{
struct bch_sb_field_errors *src = bch2_sb_field_get(c->disk_sb.sb, errors);
bch_sb_errors_cpu *dst = &c->fsck_error_counts;
unsigned i, nr = bch2_sb_field_errors_nr_entries(src);
int ret;
if (!nr)
return 0;
mutex_lock(&c->fsck_error_counts_lock);
ret = darray_make_room(dst, nr);
if (ret)
goto err;
dst->nr = nr;
for (i = 0; i < nr; i++) {
dst->data[i].id = BCH_SB_ERROR_ENTRY_ID(&src->entries[i]);
dst->data[i].nr = BCH_SB_ERROR_ENTRY_NR(&src->entries[i]);
dst->data[i].last_error_time = le64_to_cpu(src->entries[i].last_error_time);
}
err:
mutex_unlock(&c->fsck_error_counts_lock);
return ret;
}
void bch2_fs_sb_errors_exit(struct bch_fs *c)
{
darray_exit(&c->fsck_error_counts);
}
void bch2_fs_sb_errors_init_early(struct bch_fs *c)
{
mutex_init(&c->fsck_error_counts_lock);
darray_init(&c->fsck_error_counts);
}
int bch2_fs_sb_errors_init(struct bch_fs *c)
{
return bch2_sb_errors_to_cpu(c);
}
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