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139a15ea58
This is a syscall table used for compiling Minijail policy files to
BPF. The compiler is available in the minijail-tools package. The
file is generated by compiling and running a small program named
dump_constants.
When cross-compiling, we have to get the syscall table for the host
platform. To do this, dump_constants is run under QEMU user emulation
for the appropriate platform. Google takes the same approach in their
minijail packages for ChromiumOS[1].
[1]: 729bd4269a/chromeos-base/minijail/minijail-9999.ebuild (49)
61 lines
1.9 KiB
Nix
61 lines
1.9 KiB
Nix
{ stdenv, lib, fetchFromGitiles, glibc, libcap, qemu }:
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let
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dumpConstants =
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if stdenv.buildPlatform == stdenv.hostPlatform then "./dump_constants"
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else if stdenv.hostPlatform.isAarch32 then "qemu-arm dump_constants"
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else if stdenv.hostPlatform.isAarch64 then "qemu-aarch64 dump_constants"
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else if stdenv.hostPlatform.isx86_64 then "qemu-x86_64 dump_constants"
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else throw "Unsupported host platform";
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in
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stdenv.mkDerivation rec {
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pname = "minijail";
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version = "14";
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src = fetchFromGitiles {
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url = "https://android.googlesource.com/platform/external/minijail";
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rev = "linux-v${version}";
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sha256 = "00dq854n4zg3ca2b46f90k15n32zn2sgabi76mnq2w985k9v977n";
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};
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nativeBuildInputs =
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lib.optional (stdenv.buildPlatform != stdenv.hostPlatform) qemu;
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buildInputs = [ libcap ];
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makeFlags = [ "LIBDIR=$(out)/lib" ];
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dumpConstantsFlags = lib.optional (stdenv.hostPlatform.libc == "glibc")
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"LDFLAGS=-L${glibc.static}/lib";
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postPatch = ''
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substituteInPlace common.mk --replace /bin/echo echo
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patchShebangs platform2_preinstall.sh
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'';
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postBuild = ''
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make $makeFlags $buildFlags $dumpConstantsFlags dump_constants
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${dumpConstants} > constants.json
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'';
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installPhase = ''
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./platform2_preinstall.sh ${version} $out/include/chromeos
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mkdir -p $out/lib/pkgconfig $out/include/chromeos $out/bin \
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$out/share/minijail
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cp -v *.so $out/lib
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cp -v *.pc $out/lib/pkgconfig
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cp -v libminijail.h scoped_minijail.h $out/include/chromeos
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cp -v minijail0 $out/bin
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cp -v constants.json $out/share/minijail
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'';
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meta = with lib; {
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homepage = "https://android.googlesource.com/platform/external/minijail/";
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description = "Sandboxing library and application using Linux namespaces and capabilities";
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license = licenses.bsd3;
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maintainers = with maintainers; [ pcarrier qyliss ];
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platforms = platforms.linux;
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};
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}
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