Rust implementation `libsodium/utils`.
License: MIT License
Rust implementation libsodium/utils.
memeq/memcmpmemset/memzeromlock/munlockalloc/free/mprotectalloc_memfd_secret/free_memfd_secret functions similar to alloc/free implementation backed by memfd_secret
This library has been stable for a while and I don't think there will be any further changes in the base API.
but there are some internal changes that may happen in future.
std::sync::OnceCell to reduce unsafe. https://github.com/quininer/memsec/blob/master/src/alloc.rs#L18windows-sysThese changes affect the MSRVs supported by memsec, and while memsec doesn't state which MSRV it supports right now, I would like it to change as little as possible.
The comment here claims that memeq is constant time. It's really not -- it's Ө(n) where n = len. Same thing for memcmp.
https://docs.rs/sodiumoxide/0.2.6/sodiumoxide/utils/index.html
Would be cool if you could add the missing ones.
Building memsec for android using MacOS fails
cargo build --target armv7-linux-androideabi -vv
Machine-MacBook-Pro:memsec User$ cargo build --target armv7-linux-androideabi -vv
Compiling libc v0.2.55
Compiling memsec v0.5.5 (/Users/User/src/memsec)
Running `CARGO_PKG_VERSION_PRE= CARGO_PKG_VERSION_MAJOR=0 DYLD_FALLBACK_LIBRARY_PATH='/Users/User/src/memsec/target/debug/deps:/Users/User/.rustup/toolchains/stable-x86_64-apple-darwin/lib:/Users/User/.rustup/toolchains/stable-x86_64-apple-darwin/lib:/Users/User/lib:/usr/local/lib:/usr/lib:/Users/User/lib:/usr/local/lib:/lib:/usr/lib' CARGO_PKG_NAME=libc CARGO_PKG_VERSION=0.2.55 CARGO_PKG_REPOSITORY='https://github.com/rust-lang/libc' CARGO=/Users/User/.rustup/toolchains/stable-x86_64-apple-darwin/bin/cargo CARGO_PKG_VERSION_MINOR=2 CARGO_PKG_VERSION_PATCH=55 CARGO_MANIFEST_DIR=/Users/User/.cargo/registry/src/github.com-1ecc6299db9ec823/libc-0.2.55 CARGO_PKG_DESCRIPTION='Raw FFI bindings to platform libraries like libc.
' CARGO_PKG_HOMEPAGE='https://github.com/rust-lang/libc' CARGO_PKG_AUTHORS='The Rust Project Developers' rustc --crate-name build_script_build /Users/User/.cargo/registry/src/github.com-1ecc6299db9ec823/libc-0.2.55/build.rs --color always --crate-type bin --emit=dep-info,link -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="use_std"' -C metadata=ad5ddcb9ef777b62 -C extra-filename=-ad5ddcb9ef777b62 --out-dir /Users/User/src/memsec/target/debug/build/libc-ad5ddcb9ef777b62 -L dependency=/Users/User/src/memsec/target/debug/deps --cap-lints warn`
Running `CARGO_PKG_VERSION_PRE= CARGO_PKG_VERSION_MAJOR=0 DYLD_FALLBACK_LIBRARY_PATH='/Users/User/src/memsec/target/debug/deps:/Users/User/.rustup/toolchains/stable-x86_64-apple-darwin/lib:/Users/User/.rustup/toolchains/stable-x86_64-apple-darwin/lib:/Users/User/lib:/usr/local/lib:/usr/lib:/Users/User/lib:/usr/local/lib:/lib:/usr/lib' CARGO_PKG_NAME=memsec CARGO_PKG_VERSION=0.5.5 CARGO_PKG_REPOSITORY='https://github.com/quininer/memsec' CARGO=/Users/User/.rustup/toolchains/stable-x86_64-apple-darwin/bin/cargo CARGO_PKG_VERSION_MINOR=5 CARGO_PKG_VERSION_PATCH=5 CARGO_PRIMARY_PACKAGE=1 CARGO_MANIFEST_DIR=/Users/User/src/memsec CARGO_PKG_DESCRIPTION='Rust implementation `libsodium/utils`.' CARGO_PKG_HOMEPAGE= CARGO_PKG_AUTHORS='quininer kel <[email protected]>' rustc --crate-name build_script_build build.rs --color always --crate-type bin --emit=dep-info,link -C debuginfo=2 --cfg 'feature="alloc"' --cfg 'feature="default"' --cfg 'feature="getrandom"' --cfg 'feature="libc"' --cfg 'feature="mach_o_sys"' --cfg 'feature="use_os"' --cfg 'feature="winapi"' -C metadata=644572c87eb180c9 -C extra-filename=-644572c87eb180c9 --out-dir /Users/User/src/memsec/target/debug/build/memsec-644572c87eb180c9 -C incremental=/Users/User/src/memsec/target/debug/incremental -L dependency=/Users/User/src/memsec/target/debug/deps`
Running `/Users/User/src/memsec/target/debug/build/memsec-644572c87eb180c9/build-script-build`
[memsec 0.5.5] cargo:rustc-cfg=apple
Running `/Users/User/src/memsec/target/debug/build/libc-ad5ddcb9ef777b62/build-script-build`
[libc 0.2.55] cargo:rustc-cfg=libc_priv_mod_use
[libc 0.2.55] cargo:rustc-cfg=libc_union
[libc 0.2.55] cargo:rustc-cfg=libc_const_size_of
[libc 0.2.55] cargo:rustc-cfg=libc_align
[libc 0.2.55] cargo:rustc-cfg=libc_core_cvoid
[libc 0.2.55] cargo:rustc-cfg=libc_packedN
Running `CARGO_PKG_VERSION_PRE= OUT_DIR=/Users/User/src/memsec/target/armv7-linux-androideabi/debug/build/libc-57c702f685547b8d/out CARGO_PKG_VERSION_MAJOR=0 DYLD_FALLBACK_LIBRARY_PATH='/Users/User/src/memsec/target/debug/deps:/Users/User/.rustup/toolchains/stable-x86_64-apple-darwin/lib:/Users/User/.rustup/toolchains/stable-x86_64-apple-darwin/lib:/Users/User/lib:/usr/local/lib:/usr/lib:/Users/User/lib:/usr/local/lib:/lib:/usr/lib' CARGO_PKG_NAME=libc CARGO_PKG_VERSION=0.2.55 CARGO_PKG_REPOSITORY='https://github.com/rust-lang/libc' CARGO=/Users/User/.rustup/toolchains/stable-x86_64-apple-darwin/bin/cargo CARGO_PKG_VERSION_MINOR=2 CARGO_PKG_VERSION_PATCH=55 CARGO_MANIFEST_DIR=/Users/User/.cargo/registry/src/github.com-1ecc6299db9ec823/libc-0.2.55 CARGO_PKG_DESCRIPTION='Raw FFI bindings to platform libraries like libc.
' CARGO_PKG_HOMEPAGE='https://github.com/rust-lang/libc' CARGO_PKG_AUTHORS='The Rust Project Developers' rustc --crate-name libc /Users/User/.cargo/registry/src/github.com-1ecc6299db9ec823/libc-0.2.55/src/lib.rs --color always --crate-type lib --emit=dep-info,link -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="use_std"' -C metadata=2963020b54ba7cc1 -C extra-filename=-2963020b54ba7cc1 --out-dir /Users/User/src/memsec/target/armv7-linux-androideabi/debug/deps --target armv7-linux-androideabi -C ar=/Users/User/src/NDK/arm/bin/arm-linux-androideabi-ar -C linker=/Users/User/src/NDK/arm/bin/arm-linux-androideabi-clang -L dependency=/Users/User/src/memsec/target/armv7-linux-androideabi/debug/deps -L dependency=/Users/User/src/memsec/target/debug/deps --cap-lints warn --cfg libc_priv_mod_use --cfg libc_union --cfg libc_const_size_of --cfg libc_align --cfg libc_core_cvoid --cfg libc_packedN`
Compiling getrandom v0.1.3
Running `CARGO_PKG_VERSION_PRE= CARGO_PKG_VERSION_MAJOR=0 DYLD_FALLBACK_LIBRARY_PATH='/Users/User/src/memsec/target/debug/deps:/Users/User/.rustup/toolchains/stable-x86_64-apple-darwin/lib:/Users/User/.rustup/toolchains/stable-x86_64-apple-darwin/lib:/Users/User/lib:/usr/local/lib:/usr/lib:/Users/User/lib:/usr/local/lib:/lib:/usr/lib' CARGO_PKG_NAME=getrandom CARGO_PKG_VERSION=0.1.3 CARGO_PKG_REPOSITORY='https://github.com/rust-random/getrandom' CARGO=/Users/User/.rustup/toolchains/stable-x86_64-apple-darwin/bin/cargo CARGO_PKG_VERSION_MINOR=1 CARGO_PKG_VERSION_PATCH=3 CARGO_MANIFEST_DIR=/Users/User/.cargo/registry/src/github.com-1ecc6299db9ec823/getrandom-0.1.3 CARGO_PKG_DESCRIPTION='A small cross-platform library for retrieving random data from system source' CARGO_PKG_HOMEPAGE= CARGO_PKG_AUTHORS='The Rand Project Developers' rustc --edition=2018 --crate-name getrandom /Users/User/.cargo/registry/src/github.com-1ecc6299db9ec823/getrandom-0.1.3/src/lib.rs --color always --crate-type lib --emit=dep-info,link -C debuginfo=2 -C metadata=a57b553dffd209ec -C extra-filename=-a57b553dffd209ec --out-dir /Users/User/src/memsec/target/armv7-linux-androideabi/debug/deps --target armv7-linux-androideabi -C ar=/Users/User/src/NDK/arm/bin/arm-linux-androideabi-ar -C linker=/Users/User/src/NDK/arm/bin/arm-linux-androideabi-clang -L dependency=/Users/User/src/memsec/target/armv7-linux-androideabi/debug/deps -L dependency=/Users/User/src/memsec/target/debug/deps --extern libc=/Users/User/src/memsec/target/armv7-linux-androideabi/debug/deps/liblibc-2963020b54ba7cc1.rlib --cap-lints warn`
Running `CARGO_PKG_VERSION_PRE= OUT_DIR=/Users/User/src/memsec/target/armv7-linux-androideabi/debug/build/memsec-65bda352a3700c4b/out CARGO_PKG_VERSION_MAJOR=0 DYLD_FALLBACK_LIBRARY_PATH='/Users/User/src/memsec/target/debug/deps:/Users/User/.rustup/toolchains/stable-x86_64-apple-darwin/lib:/Users/User/.rustup/toolchains/stable-x86_64-apple-darwin/lib:/Users/User/lib:/usr/local/lib:/usr/lib:/Users/User/lib:/usr/local/lib:/lib:/usr/lib' CARGO_PKG_NAME=memsec CARGO_PKG_VERSION=0.5.5 CARGO_PKG_REPOSITORY='https://github.com/quininer/memsec' CARGO=/Users/User/.rustup/toolchains/stable-x86_64-apple-darwin/bin/cargo CARGO_PKG_VERSION_MINOR=5 CARGO_PKG_VERSION_PATCH=5 CARGO_PRIMARY_PACKAGE=1 CARGO_MANIFEST_DIR=/Users/User/src/memsec CARGO_PKG_DESCRIPTION='Rust implementation `libsodium/utils`.' CARGO_PKG_HOMEPAGE= CARGO_PKG_AUTHORS='quininer kel <[email protected]>' rustc --crate-name memsec src/lib.rs --color always --crate-type lib --emit=dep-info,link -C debuginfo=2 --cfg 'feature="alloc"' --cfg 'feature="default"' --cfg 'feature="getrandom"' --cfg 'feature="libc"' --cfg 'feature="mach_o_sys"' --cfg 'feature="use_os"' --cfg 'feature="winapi"' -C metadata=745173220f5af749 -C extra-filename=-745173220f5af749 --out-dir /Users/User/src/memsec/target/armv7-linux-androideabi/debug/deps --target armv7-linux-androideabi -C ar=/Users/User/src/NDK/arm/bin/arm-linux-androideabi-ar -C linker=/Users/User/src/NDK/arm/bin/arm-linux-androideabi-clang -C incremental=/Users/User/src/memsec/target/armv7-linux-androideabi/debug/incremental -L dependency=/Users/User/src/memsec/target/armv7-linux-androideabi/debug/deps -L dependency=/Users/User/src/memsec/target/debug/deps --extern getrandom=/Users/User/src/memsec/target/armv7-linux-androideabi/debug/deps/libgetrandom-a57b553dffd209ec.rlib --extern libc=/Users/User/src/memsec/target/armv7-linux-androideabi/debug/deps/liblibc-2963020b54ba7cc1.rlib --cfg apple`
error[E0463]: can't find crate for `mach_o_sys`
--> src/lib.rs:8:40
|
8 | #[cfg(all(apple, feature = "use_os"))] extern crate mach_o_sys;
| ^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
error: aborting due to previous error
For more information about this error, try `rustc --explain E0463`.
error: Could not compile `memsec`.
Caused by:
process didn't exit successfully: `CARGO_PKG_VERSION_PRE= OUT_DIR=/Users/User/src/memsec/target/armv7-linux-androideabi/debug/build/memsec-65bda352a3700c4b/out CARGO_PKG_VERSION_MAJOR=0 DYLD_FALLBACK_LIBRARY_PATH='/Users/User/src/memsec/target/debug/deps:/Users/User/.rustup/toolchains/stable-x86_64-apple-darwin/lib:/Users/User/.rustup/toolchains/stable-x86_64-apple-darwin/lib:/Users/User/lib:/usr/local/lib:/usr/lib:/Users/User/lib:/usr/local/lib:/lib:/usr/lib' CARGO_PKG_NAME=memsec CARGO_PKG_VERSION=0.5.5 CARGO_PKG_REPOSITORY='https://github.com/quininer/memsec' CARGO=/Users/User/.rustup/toolchains/stable-x86_64-apple-darwin/bin/cargo CARGO_PKG_VERSION_MINOR=5 CARGO_PKG_VERSION_PATCH=5 CARGO_PRIMARY_PACKAGE=1 CARGO_MANIFEST_DIR=/Users/User/src/memsec CARGO_PKG_DESCRIPTION='Rust implementation `libsodium/utils`.' CARGO_PKG_HOMEPAGE= CARGO_PKG_AUTHORS='quininer kel <[email protected]>' rustc --crate-name memsec src/lib.rs --color always --crate-type lib --emit=dep-info,link -C debuginfo=2 --cfg 'feature="alloc"' --cfg 'feature="default"' --cfg 'feature="getrandom"' --cfg 'feature="libc"' --cfg 'feature="mach_o_sys"' --cfg 'feature="use_os"' --cfg 'feature="winapi"' -C metadata=745173220f5af749 -C extra-filename=-745173220f5af749 --out-dir /Users/User/src/memsec/target/armv7-linux-androideabi/debug/deps --target armv7-linux-androideabi -C ar=/Users/User/src/NDK/arm/bin/arm-linux-androideabi-ar -C linker=/Users/User/src/NDK/arm/bin/arm-linux-androideabi-clang -C incremental=/Users/User/src/memsec/target/armv7-linux-androideabi/debug/incremental -L dependency=/Users/User/src/memsec/target/armv7-linux-androideabi/debug/deps -L dependency=/Users/User/src/memsec/target/debug/deps --extern getrandom=/Users/User/src/memsec/target/armv7-linux-androideabi/debug/deps/libgetrandom-a57b553dffd209ec.rlib --extern libc=/Users/User/src/memsec/target/armv7-linux-androideabi/debug/deps/liblibc-2963020b54ba7cc1.rlib --cfg apple` (exit code: 1)
I guess it is detecting the build-os instead of the target-os and therefore trying to use march_o_sys instead of libc when building from apple.
See this thread: rosenpass/rosenpass#224
Maybe you @quininer have some thoughts?
We are interested in having a memfd_secret based allocator, that uses memsec as fallback. So we figured it would make sense to ask, if this would be a functionality desired directly in memsec?
The basic ideas are:
memfd_secret support (this we already have, on non-linux systems that is compile time known false)memfd_secret support is available, try memfd_secret + mmap to allocateAll that of course feature gated, not active by default.
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