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verity: Support status info about FEC repaired events

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Kernel 6.19 will support additional info on dm-verity status
line that contains number of FEC successful repair events.

This patch adds support to libcryptsetup and veritysetup status command.

Ref. https://lore.kernel.org/dm-devel/074e1ecc-6690-1c22-0dba-454e191e1b6f@redhat.com/T/#m1af31c9c4263fe2b1fb58dee2fd7f0bdf045c463
This commit is contained in:
Milan Broz
2025-11-09 22:36:40 +01:00
parent 11a4fc6790
commit 8da66c3066
7 changed files with 92 additions and 10 deletions
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34
lib/libdevmapper.c
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@@ -1992,6 +1992,40 @@ int dm_status_verity_ok(struct crypt_device *cd, const char *name)
return r;
}
int dm_status_verity_repaired(struct crypt_device *cd, const char *name, uint64_t *repaired)
{
int r;
struct dm_info dmi;
char *status_line = NULL, *p;
uint64_t val64;
if (dm_init_context(cd, DM_VERITY))
return -ENOTSUP;
r = dm_status_dmi(name, &dmi, DM_VERITY_TARGET, &status_line);
dm_exit_context();
if (r < 0 || !status_line || !*status_line) {
free(status_line);
return r;
}
p = status_line + 1;
while (*p == ' ')
p++;
if (!*p || *p == '-' || sscanf(p, "%" PRIu64, &val64) != 1) {
free(status_line);
return -ENOTSUP;
}
log_dbg(cd, "Verity volume %s status is %s.", name, status_line ?: "");
if (repaired)
*repaired = val64;
free(status_line);
return 0;
}
int dm_status_integrity_failures(struct crypt_device *cd, const char *name, uint64_t *count)
{
int r;