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Add some Rust code

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This commit is contained in:
Eelco Dolstra 2019-03-27 14:12:20 +01:00
parent abb8ef619b
commit 11da5b2816
10 changed files with 194 additions and 3 deletions
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2
.gitignore vendored
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@ -119,3 +119,5 @@ GPATH
GRTAGS
GSYMS
GTAGS
nix-rust/target

1
Makefile
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@ -1,6 +1,7 @@
makefiles = \
mk/precompiled-headers.mk \
local.mk \
nix-rust/local.mk \
src/libutil/local.mk \
src/libstore/local.mk \
src/libmain/local.mk \

59
nix-rust/Cargo.lock generated Normal file
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@ -0,0 +1,59 @@
[[package]]
name = "cfg-if"
version = "0.1.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "filetime"
version = "0.2.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"cfg-if 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.50 (registry+https://github.com/rust-lang/crates.io-index)",
"redox_syscall 0.1.51 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "libc"
version = "0.2.50"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "nix-rust"
version = "0.1.0"
dependencies = [
"libc 0.2.50 (registry+https://github.com/rust-lang/crates.io-index)",
"tar 0.4.22 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "redox_syscall"
version = "0.1.51"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "tar"
version = "0.4.22"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"filetime 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
"libc 0.2.50 (registry+https://github.com/rust-lang/crates.io-index)",
"redox_syscall 0.1.51 (registry+https://github.com/rust-lang/crates.io-index)",
"xattr 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "xattr"
version = "0.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"libc 0.2.50 (registry+https://github.com/rust-lang/crates.io-index)",
]
[metadata]
"checksum cfg-if 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "11d43355396e872eefb45ce6342e4374ed7bc2b3a502d1b28e36d6e23c05d1f4"
"checksum filetime 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "a2df5c1a8c4be27e7707789dc42ae65976e60b394afd293d1419ab915833e646"
"checksum libc 0.2.50 (registry+https://github.com/rust-lang/crates.io-index)" = "aab692d7759f5cd8c859e169db98ae5b52c924add2af5fbbca11d12fefb567c1"
"checksum redox_syscall 0.1.51 (registry+https://github.com/rust-lang/crates.io-index)" = "423e376fffca3dfa06c9e9790a9ccd282fafb3cc6e6397d01dbf64f9bacc6b85"
"checksum tar 0.4.22 (registry+https://github.com/rust-lang/crates.io-index)" = "c2167ff53da2a661702b3299f71a91b61b1dffef36b4b2884b1f9c67254c0133"
"checksum xattr 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "244c3741f4240ef46274860397c7c74e50eb23624996930e484c16679633a54c"

12
nix-rust/Cargo.toml Normal file
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@ -0,0 +1,12 @@
[package]
name = "nix-rust"
version = "0.1.0"
authors = ["Eelco Dolstra <edolstra@gmail.com>"]
[lib]
name = "nixrust"
crate-type = ["staticlib"]
[dependencies]
tar = "0.4"
libc = "0.2"

7
nix-rust/local.mk Normal file
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@ -0,0 +1,7 @@
libnixrust_PATH := $(d)/target/release/libnixrust.a
libnixrust_INSTALL_PATH := $(libnixrust_PATH)
libnixrust_LDFLAGS_USE := -L$(d)/target/release -lnixrust -ldl
libnixrust_LDFLAGS_USE_INSTALLED := $(libnixrust_LDFLAGS_USE)
$(d)/target/release/libnixrust.a: $(wildcard $(d)/src/*.rs) $(d)/Cargo.toml
$(trace-gen) cd nix-rust && RUSTC_BOOTSTRAP=1 cargo build --release && touch target/release/libnixrust.a

48
nix-rust/src/lib.rs Normal file
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@ -0,0 +1,48 @@
extern crate libc;
extern crate tar;
use std::fs;
use std::io;
use std::os::unix::fs::OpenOptionsExt;
use std::path::Path;
use tar::Archive;
#[no_mangle]
pub extern "C" fn unpack_tarfile(data: &[u8], dest_dir: &str) -> bool {
// FIXME: handle errors.
let dest_dir = Path::new(dest_dir);
let mut tar = Archive::new(data);
for file in tar.entries().unwrap() {
let mut file = file.unwrap();
let dest_file = dest_dir.join(file.header().path().unwrap());
fs::create_dir_all(dest_file.parent().unwrap()).unwrap();
match file.header().entry_type() {
tar::EntryType::Directory => {
fs::create_dir(dest_file).unwrap();
}
tar::EntryType::Regular => {
let mode = if file.header().mode().unwrap() & libc::S_IXUSR == 0 {
0o666
} else {
0o777
};
let mut f = fs::OpenOptions::new()
.create(true)
.write(true)
.mode(mode)
.open(dest_file)
.unwrap();
io::copy(&mut file, &mut f).unwrap();
}
t => panic!("Unsupported tar entry type '{:?}'.", t),
}
}
true
}

1
release-common.nix
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@ -51,6 +51,7 @@ rec {
openssl pkgconfig sqlite boehmgc
boost
nlohmann_json
rustc cargo
# Tests
git

2
shell.nix
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@ -7,7 +7,7 @@ with import ./release-common.nix { inherit pkgs; };
(if useClang then clangStdenv else stdenv).mkDerivation {
name = "nix";
buildInputs = buildDeps ++ tarballDeps ++ perlDeps;
buildInputs = buildDeps ++ tarballDeps ++ perlDeps ++ [ pkgs.rustfmt ];
inherit configureFlags;

4
src/nix/local.mk
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@ -15,9 +15,9 @@ nix_SOURCES := \
$(wildcard src/nix-prefetch-url/*.cc) \
$(wildcard src/nix-store/*.cc) \
nix_LIBS = libexpr libmain libstore libutil
nix_LIBS = libexpr libmain libstore libutil libnixrust
nix_LDFLAGS = -pthread $(SODIUM_LIBS) $(EDITLINE_LIBS) $(BOOST_LDFLAGS) -lboost_context -lboost_thread -lboost_system
nix_LDFLAGS = -pthread $(SODIUM_LIBS) $(EDITLINE_LIBS) $(BOOST_LDFLAGS) -lboost_context -lboost_thread -lboost_system -Lnix-rust/target/release
$(foreach name, \
nix-build nix-channel nix-collect-garbage nix-copy-closure nix-daemon nix-env nix-hash nix-instantiate nix-prefetch-url nix-shell nix-store, \

61
src/nix/test.cc Normal file
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@ -0,0 +1,61 @@
#include "command.hh"
#include "store-api.hh"
#include "common-args.hh"
using namespace nix;
namespace rust {
// Depending on the internal representation of Rust slices is slightly
// evil...
template<typename T> struct Slice
{
const T * ptr;
size_t size;
Slice(const T * ptr, size_t size) : ptr(ptr), size(size)
{
assert(ptr);
}
};
struct StringSlice : Slice<char>
{
StringSlice(const std::string & s): Slice(s.data(), s.size()) { }
};
}
extern "C" {
bool unpack_tarfile(rust::Slice<uint8_t> data, rust::StringSlice dest_dir);
}
struct CmdTest : StoreCommand
{
CmdTest()
{
}
std::string name() override
{
return "test";
}
std::string description() override
{
return "bla bla";
}
void run(ref<Store> store) override
{
auto data = readFile("./nix-2.2.tar");
std::string destDir = "./dest";
deletePath(destDir);
unpack_tarfile({(uint8_t*) data.data(), data.size()}, destDir);
}
};
static RegisterCommand r(make_ref<CmdTest>());