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| author | Vasil Dimov <vd@FreeBSD.org> | 2020-03-26 20:43:17 +0100 |
|---|---|---|
| committer | Vasil Dimov <vd@FreeBSD.org> | 2020-03-26 20:43:17 +0100 |
| commit | f85203097f78d9daa1d35c4097a80beab31da2a4 (patch) | |
| tree | 5324eb0cb2b36bdabf3b46f849e7cdae487bac61 /src/support | |
| parent | 7f9dedb22dcd9550ca525c0e35fec38b2d59e029 (diff) | |
| download | bitcoin-f85203097f78d9daa1d35c4097a80beab31da2a4.tar.xz | |
lockedpool: avoid sensitive data in core files (FreeBSD)
This is a followup to
23991ee53 / https://github.com/bitcoin/bitcoin/pull/15600
to also use madvise(2) on FreeBSD to avoid sensitive data allocated
with secure_allocator ending up in core files in addition to preventing
it from going to the swap.
Diffstat (limited to 'src/support')
| -rw-r--r-- | src/support/lockedpool.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/support/lockedpool.cpp b/src/support/lockedpool.cpp index f3cc12201c..ea4d80aba8 100644 --- a/src/support/lockedpool.cpp +++ b/src/support/lockedpool.cpp @@ -253,8 +253,10 @@ void *PosixLockedPageAllocator::AllocateLocked(size_t len, bool *lockingSuccess) } if (addr) { *lockingSuccess = mlock(addr, len) == 0; -#ifdef MADV_DONTDUMP +#if defined(MADV_DONTDUMP) // Linux madvise(addr, len, MADV_DONTDUMP); +#elif defined(MADV_NOCORE) // FreeBSD + madvise(addr, len, MADV_NOCORE); #endif } return addr; |