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mdbx: ignore meta-pages with wrong pagesize.

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This commit is contained in:
Leo Yuriev 2017-05-26 15:20:25 +03:00
parent 0e49b1b2b4
commit c02a3ac687
1 changed files with 13 additions and 1 deletions
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14
src/mdbx.c
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@ -3319,10 +3319,22 @@ static int __cold mdbx_read_header(MDBX_env *env, MDBX_meta *meta) {
return MDBX_VERSION_MISMATCH; return MDBX_VERSION_MISMATCH;
} }
/* LY: check pagesize */
if (!is_power2(page.mp_meta.mm_psize) ||
page.mp_meta.mm_psize < MIN_PAGESIZE ||
page.mp_meta.mm_psize > MAX_PAGESIZE) {
mdbx_debug("meta[%u] has invalid pagesize %u", meta_number,
page.mp_meta.mm_psize);
continue;
}
/* LY: check signature as a checksum */ /* LY: check signature as a checksum */
if (META_IS_STEADY(&page.mp_meta) && if (META_IS_STEADY(&page.mp_meta) &&
page.mp_meta.mm_datasync_sign != mdbx_meta_sign(&page.mp_meta)) { page.mp_meta.mm_datasync_sign != mdbx_meta_sign(&page.mp_meta)) {
mdbx_debug("steady-meta[%u] has invalid checksum", meta_number); mdbx_debug("meta[%u] has invalid steady-checksum (0x%" PRIx64
" != 0x%" PRIx64 ")",
meta_number, page.mp_meta.mm_datasync_sign,
mdbx_meta_sign(&page.mp_meta));
continue; continue;
} }