/*
* __wt_verify_dsk_image --
* Verify a single block as read from disk.
*/
int
__wt_verify_dsk_image(WT_SESSION_IMPL *session,
const char *tag, const WT_PAGE_HEADER *dsk, size_t size, int empty_page_ok)
{
const uint8_t *p, *end;
u_int i;
uint8_t flags;
/* Check the page type. */
switch (dsk->type) {
case WT_PAGE_BLOCK_MANAGER:
case WT_PAGE_COL_FIX:
case WT_PAGE_COL_INT:
case WT_PAGE_COL_VAR:
case WT_PAGE_OVFL:
case WT_PAGE_ROW_INT:
case WT_PAGE_ROW_LEAF:
break;
case WT_PAGE_INVALID:
default:
WT_RET_VRFY(session,
"page at %s has an invalid type of %" PRIu32,
tag, dsk->type);
}
/* Check the page record number. */
switch (dsk->type) {
case WT_PAGE_COL_FIX:
case WT_PAGE_COL_INT:
case WT_PAGE_COL_VAR:
if (dsk->recno != 0)
break;
WT_RET_VRFY(session,
"%s page at %s has a record number of zero",
__wt_page_type_string(dsk->type), tag);
case WT_PAGE_BLOCK_MANAGER:
case WT_PAGE_OVFL:
case WT_PAGE_ROW_INT:
case WT_PAGE_ROW_LEAF:
if (dsk->recno == 0)
break;
WT_RET_VRFY(session,
"%s page at %s has a non-zero record number",
__wt_page_type_string(dsk->type), tag);
}
/* Check the page flags. */
flags = dsk->flags;
if (LF_ISSET(WT_PAGE_COMPRESSED))
LF_CLR(WT_PAGE_COMPRESSED);
if (LF_ISSET(WT_PAGE_ENCRYPTED))
LF_CLR(WT_PAGE_ENCRYPTED);
if (dsk->type == WT_PAGE_ROW_LEAF) {
if (LF_ISSET(WT_PAGE_EMPTY_V_ALL) &&
LF_ISSET(WT_PAGE_EMPTY_V_NONE))
WT_RET_VRFY(session,
"page at %s has invalid flags combination: 0x%"
PRIx8,
tag, dsk->flags);
if (LF_ISSET(WT_PAGE_EMPTY_V_ALL))
LF_CLR(WT_PAGE_EMPTY_V_ALL);
if (LF_ISSET(WT_PAGE_EMPTY_V_NONE))
LF_CLR(WT_PAGE_EMPTY_V_NONE);
}
if (flags != 0)
WT_RET_VRFY(session,
"page at %s has invalid flags set: 0x%" PRIx8,
tag, flags);
/* Unused bytes */
for (p = dsk->unused, i = sizeof(dsk->unused); i > 0; --i)
if (*p != '\0')
WT_RET_VRFY(session,
"page at %s has non-zero unused page header bytes",
tag);
/*
* Any bytes after the data chunk should be nul bytes; ignore if the
* size is 0, that allows easy checking of disk images where we don't
* have the size.
*/
if (size != 0) {
p = (uint8_t *)dsk + dsk->mem_size;
end = (uint8_t *)dsk + size;
for (; p < end; ++p)
if (*p != '\0')
WT_RET_VRFY(session,
"%s page at %s has non-zero trailing bytes",
__wt_page_type_string(dsk->type), tag);
}
/* Check for empty pages, then verify the items on the page. */
switch (dsk->type) {
case WT_PAGE_COL_INT:
case WT_PAGE_COL_FIX:
case WT_PAGE_COL_VAR:
case WT_PAGE_ROW_INT:
case WT_PAGE_ROW_LEAF:
if (!empty_page_ok && dsk->u.entries == 0)
WT_RET_VRFY(session, "%s page at %s has no entries",
__wt_page_type_string(dsk->type), tag);
break;
case WT_PAGE_BLOCK_MANAGER:
case WT_PAGE_OVFL:
if (dsk->u.datalen == 0)
WT_RET_VRFY(session, "%s page at %s has no data",
__wt_page_type_string(dsk->type), tag);
break;
}
switch (dsk->type) {
case WT_PAGE_COL_INT:
return (__verify_dsk_col_int(session, tag, dsk));
case WT_PAGE_COL_FIX:
return (__verify_dsk_col_fix(session, tag, dsk));
case WT_PAGE_COL_VAR:
return (__verify_dsk_col_var(session, tag, dsk));
case WT_PAGE_ROW_INT:
case WT_PAGE_ROW_LEAF:
return (__verify_dsk_row(session, tag, dsk));
case WT_PAGE_BLOCK_MANAGER:
case WT_PAGE_OVFL:
return (__verify_dsk_chunk(session, tag, dsk, dsk->u.datalen));
WT_ILLEGAL_VALUE(session);
}
/* NOTREACHED */
}
/*
* __wt_verify_dsk --
* Verify a single Btree page as read from disk.
*/
int
__wt_verify_dsk(WT_SESSION_IMPL *session, const char *addr, WT_ITEM *buf)
{
WT_PAGE_HEADER *dsk;
uint32_t size;
uint8_t *p, *end;
u_int i;
dsk = buf->mem;
size = buf->size;
/* Check the page type. */
switch (dsk->type) {
case WT_PAGE_BLOCK_MANAGER:
case WT_PAGE_COL_FIX:
case WT_PAGE_COL_INT:
case WT_PAGE_COL_VAR:
case WT_PAGE_OVFL:
case WT_PAGE_ROW_INT:
case WT_PAGE_ROW_LEAF:
break;
case WT_PAGE_INVALID:
default:
WT_RET_VRFY(session,
"page at %s has an invalid type of %" PRIu32,
addr, dsk->type);
}
/* Check the page record number. */
switch (dsk->type) {
case WT_PAGE_COL_FIX:
case WT_PAGE_COL_INT:
case WT_PAGE_COL_VAR:
if (dsk->recno != 0)
break;
WT_RET_VRFY(session,
"%s page at %s has a record number of zero",
__wt_page_type_string(dsk->type), addr);
case WT_PAGE_BLOCK_MANAGER:
case WT_PAGE_OVFL:
case WT_PAGE_ROW_INT:
case WT_PAGE_ROW_LEAF:
if (dsk->recno == 0)
break;
WT_RET_VRFY(session,
"%s page at %s has a non-zero record number",
__wt_page_type_string(dsk->type), addr);
}
/* Check the page flags. */
switch (dsk->flags) {
case 0:
case WT_PAGE_COMPRESSED:
break;
default:
WT_RET_VRFY(session,
"page at %s has an invalid flags value of 0x%" PRIx32,
addr, (uint32_t)dsk->flags);
}
/* Unused bytes */
for (p = dsk->unused, i = sizeof(dsk->unused); i > 0; --i)
if (*p != '\0')
WT_RET_VRFY(session,
"page at %s has non-zero unused page header bytes",
addr);
/* Any bytes after the data chunk should be nul bytes. */
p = (uint8_t *)dsk + dsk->mem_size;
end = (uint8_t *)dsk + size;
for (; p < end; ++p)
if (*p != '\0')
WT_RET_VRFY(session,
"%s page at %s has non-zero trailing bytes",
__wt_page_type_string(dsk->type), addr);
/* Verify the items on the page. */
switch (dsk->type) {
case WT_PAGE_COL_INT:
return (__verify_dsk_col_int(session, addr, dsk));
case WT_PAGE_COL_FIX:
return (__verify_dsk_col_fix(session, addr, dsk));
case WT_PAGE_COL_VAR:
return (__verify_dsk_col_var(session, addr, dsk));
case WT_PAGE_ROW_INT:
case WT_PAGE_ROW_LEAF:
return (__verify_dsk_row(session, addr, dsk));
case WT_PAGE_BLOCK_MANAGER:
case WT_PAGE_OVFL:
return (__verify_dsk_chunk(session, addr, dsk, dsk->u.datalen));
WT_ILLEGAL_VALUE(session);
}
/* NOTREACHED */
}
