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59 lines
1.5 KiB
59 lines
1.5 KiB
{ stdenv, lib, coreutils }:
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stdenv.mkDerivation rec {
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pname = "libredirect";
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version = "0";
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unpackPhase = ''
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cp ${./libredirect.c} libredirect.c
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cp ${./test.c} test.c
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'';
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libName = "libredirect" + stdenv.targetPlatform.extensions.sharedLibrary;
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outputs = ["out" "hook"];
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buildPhase = ''
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$CC -Wall -std=c99 -O3 -fPIC -ldl -shared \
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${lib.optionalString stdenv.isDarwin "-Wl,-install_name,$out/lib/$libName"} \
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-o "$libName" \
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libredirect.c
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if [ -n "$doInstallCheck" ]; then
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$CC -Wall -std=c99 -O3 test.c -o test
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fi
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'';
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installPhase = ''
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install -vD "$libName" "$out/lib/$libName"
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mkdir -p "$hook/nix-support"
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cat <<SETUP_HOOK > "$hook/nix-support/setup-hook"
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${if stdenv.isDarwin then ''
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export DYLD_INSERT_LIBRARIES="$out/lib/$libName"
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export DYLD_FORCE_FLAT_NAMESPACE=1
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'' else ''
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export LD_PRELOAD="$out/lib/$libName"
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''}
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SETUP_HOOK
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'';
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doInstallCheck = true;
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installCheckPhase = ''
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(
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source "$hook/nix-support/setup-hook"
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NIX_REDIRECTS="/foo/bar/test=${coreutils}/bin/true" ./test
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)
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'';
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meta = with lib; {
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platforms = platforms.unix;
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description = "An LD_PRELOAD library to intercept and rewrite the paths in glibc calls";
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longDescription = ''
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libredirect is an LD_PRELOAD library to intercept and rewrite the paths in
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glibc calls based on the value of $NIX_REDIRECTS, a colon-separated list
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of path prefixes to be rewritten, e.g. "/src=/dst:/usr/=/nix/store/".
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'';
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};
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}
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