forked from lix-project/lix
Merge pull request #1030 from pikajude/rsd-cc
Implement resolve-system-dependencies in C++
This commit is contained in:
commit
aa1ea0d1e4
1
Makefile
1
Makefile
|
@ -13,6 +13,7 @@ makefiles = \
|
|||
src/nix-collect-garbage/local.mk \
|
||||
src/nix-prefetch-url/local.mk \
|
||||
src/buildenv/local.mk \
|
||||
src/resolve-system-dependencies/local.mk \
|
||||
perl/local.mk \
|
||||
scripts/local.mk \
|
||||
corepkgs/local.mk \
|
||||
|
|
17
configure.ac
17
configure.ac
|
@ -246,23 +246,6 @@ AC_MSG_RESULT(yes)
|
|||
AC_SUBST(perlFlags)
|
||||
|
||||
|
||||
# Check for otool, an optional dependency on Darwin.
|
||||
AC_PATH_PROG(otool, otool)
|
||||
AC_MSG_CHECKING([that otool works])
|
||||
case $host_os in
|
||||
darwin*)
|
||||
if test -z "$otool" || ! $otool --version 2>/dev/null; then
|
||||
AC_MSG_RESULT(no)
|
||||
AC_MSG_ERROR([Can't get version from otool; do you need to install developer tools?])
|
||||
fi
|
||||
AC_MSG_RESULT(yes)
|
||||
;;
|
||||
*)
|
||||
AC_MSG_RESULT(not needed)
|
||||
;;
|
||||
esac
|
||||
|
||||
|
||||
# Whether to build the Perl bindings
|
||||
AC_MSG_CHECKING([whether to build the Perl bindings])
|
||||
AC_ARG_ENABLE(perl-bindings, AC_HELP_STRING([--enable-perl-bindings],
|
||||
|
|
|
@ -11,19 +11,12 @@ nix_noinst_scripts := \
|
|||
$(d)/nix-profile.sh \
|
||||
$(d)/nix-reduce-build
|
||||
|
||||
ifeq ($(OS), Darwin)
|
||||
nix_noinst_scripts += $(d)/resolve-system-dependencies.pl
|
||||
endif
|
||||
|
||||
noinst-scripts += $(nix_noinst_scripts)
|
||||
|
||||
profiledir = $(sysconfdir)/profile.d
|
||||
|
||||
$(eval $(call install-file-as, $(d)/nix-profile.sh, $(profiledir)/nix.sh, 0644))
|
||||
$(eval $(call install-program-in, $(d)/build-remote.pl, $(libexecdir)/nix))
|
||||
ifeq ($(OS), Darwin)
|
||||
$(eval $(call install-program-in, $(d)/resolve-system-dependencies.pl, $(libexecdir)/nix))
|
||||
endif
|
||||
$(eval $(call install-symlink, nix-build, $(bindir)/nix-shell))
|
||||
|
||||
clean-files += $(nix_bin_scripts) $(nix_noinst_scripts)
|
||||
|
|
|
@ -1,122 +0,0 @@
|
|||
#! @perl@ -w @perlFlags@
|
||||
|
||||
use utf8;
|
||||
use strict;
|
||||
use warnings;
|
||||
use Cwd qw(realpath);
|
||||
use Errno;
|
||||
use File::Basename qw(dirname);
|
||||
use File::Path qw(make_path);
|
||||
use File::Spec::Functions qw(catfile);
|
||||
use List::Util qw(reduce);
|
||||
use IPC::Open3;
|
||||
use Nix::Config;
|
||||
use Nix::Store qw(derivationFromPath);
|
||||
use POSIX qw(uname);
|
||||
use Storable qw(lock_retrieve lock_store);
|
||||
|
||||
my ($sysname, undef, $version, undef, $machine) = uname;
|
||||
$sysname =~ /Darwin/ or die "This tool is only meant to be used on Darwin systems.";
|
||||
|
||||
my $cache = "$Nix::Config::stateDir/dependency-maps/$machine-$sysname-$version.map";
|
||||
|
||||
make_path dirname($cache);
|
||||
|
||||
our $DEPS;
|
||||
eval {
|
||||
$DEPS = lock_retrieve($cache);
|
||||
};
|
||||
|
||||
if($!{ENOENT}) {
|
||||
lock_store {}, $cache;
|
||||
$DEPS = {};
|
||||
} elsif($@) {
|
||||
die "Unable to obtain a lock on dependency-map file $cache: $@";
|
||||
}
|
||||
|
||||
sub mkset(@) {
|
||||
my %set;
|
||||
@set{@_} = ();
|
||||
\%set
|
||||
}
|
||||
|
||||
sub union($$) {
|
||||
my ($set1, $set2) = @_;
|
||||
my %new = (%$set1, %$set2);
|
||||
\%new
|
||||
}
|
||||
|
||||
sub cache_filepath($) {
|
||||
my $fp = shift;
|
||||
$fp =~ s/-/--/g;
|
||||
$fp =~ s/\//-/g;
|
||||
$fp =~ s/^-//g;
|
||||
catfile $cache, $fp
|
||||
}
|
||||
|
||||
sub resolve_tree {
|
||||
sub resolve_tree_inner {
|
||||
my ($lib, $TREE) = @_;
|
||||
return if (defined $TREE->{$lib});
|
||||
$TREE->{$lib} = mkset(@{cache_get($lib)});
|
||||
foreach my $dep (keys %{$TREE->{$lib}}) {
|
||||
resolve_tree_inner($dep, $TREE);
|
||||
}
|
||||
values %$TREE
|
||||
}
|
||||
|
||||
reduce { union($a, $b) } {}, resolve_tree_inner(@_)
|
||||
}
|
||||
|
||||
sub cache_get {
|
||||
my $key = shift;
|
||||
if (defined $DEPS->{$key}) {
|
||||
$DEPS->{$key}
|
||||
} else {
|
||||
cache_insert($key);
|
||||
cache_get($key)
|
||||
}
|
||||
}
|
||||
|
||||
sub cache_insert($) {
|
||||
my $key = shift;
|
||||
print STDERR "Finding dependencies for $key...\n";
|
||||
my @deps = find_deps($key);
|
||||
$DEPS->{$key} = \@deps;
|
||||
}
|
||||
|
||||
sub find_deps($) {
|
||||
my $lib = shift;
|
||||
my($chld_in, $chld_out, $chld_err);
|
||||
my $pid = open3($chld_in, $chld_out, $chld_err, "@otool@", "-L", "-arch", "x86_64", $lib);
|
||||
waitpid($pid, 0);
|
||||
my $line = readline $chld_out;
|
||||
if($? == 0 and $line !~ /not an object file/) {
|
||||
my @libs;
|
||||
while(<$chld_out>) {
|
||||
my $dep = (split /\s+/)[1];
|
||||
push @libs, $dep unless $dep eq $lib or $dep =~ /\@rpath/;
|
||||
}
|
||||
@libs
|
||||
} elsif (-l $lib) {
|
||||
(realpath($lib))
|
||||
} else {
|
||||
()
|
||||
}
|
||||
}
|
||||
|
||||
if (defined $ARGV[0]) {
|
||||
my $deps = derivationFromPath($ARGV[0])->{"env"}->{"__impureHostDeps"};
|
||||
if (defined $deps) {
|
||||
my @files = split(/\s+/, $deps);
|
||||
my $depcache = {};
|
||||
my $depset = reduce { union($a, $b) } (map { resolve_tree($_, $depcache) } @files);
|
||||
print "extra-chroot-dirs\n";
|
||||
print join("\n", keys %$depset);
|
||||
print "\n";
|
||||
}
|
||||
lock_store($DEPS, $cache);
|
||||
} else {
|
||||
print STDERR "Usage: $0 path/to/derivation.drv\n";
|
||||
exit 1
|
||||
}
|
|
@ -76,7 +76,7 @@ void Settings::processEnvironment()
|
|||
|
||||
// should be set with the other config options, but depends on nixLibexecDir
|
||||
#ifdef __APPLE__
|
||||
preBuildHook = nixLibexecDir + "/nix/resolve-system-dependencies.pl";
|
||||
preBuildHook = nixLibexecDir + "/nix/resolve-system-dependencies";
|
||||
#endif
|
||||
}
|
||||
|
||||
|
|
11
src/resolve-system-dependencies/local.mk
Normal file
11
src/resolve-system-dependencies/local.mk
Normal file
|
@ -0,0 +1,11 @@
|
|||
ifeq ($(OS), Darwin)
|
||||
programs += resolve-system-dependencies
|
||||
endif
|
||||
|
||||
resolve-system-dependencies_DIR := $(d)
|
||||
|
||||
resolve-system-dependencies_INSTALL_DIR := $(libexecdir)/nix
|
||||
|
||||
resolve-system-dependencies_LIBS := libstore libmain libutil libformat
|
||||
|
||||
resolve-system-dependencies_SOURCES := $(d)/resolve-system-dependencies.cc
|
194
src/resolve-system-dependencies/resolve-system-dependencies.cc
Normal file
194
src/resolve-system-dependencies/resolve-system-dependencies.cc
Normal file
|
@ -0,0 +1,194 @@
|
|||
#include "derivations.hh"
|
||||
#include "globals.hh"
|
||||
#include "shared.hh"
|
||||
#include "store-api.hh"
|
||||
#include <sys/utsname.h>
|
||||
#include <algorithm>
|
||||
#include <iostream>
|
||||
#include <fstream>
|
||||
#include <sys/mman.h>
|
||||
#include <fcntl.h>
|
||||
#include <mach-o/loader.h>
|
||||
#include <mach-o/swap.h>
|
||||
|
||||
#define DO_SWAP(x, y) ((x) ? OSSwapInt32(y) : (y))
|
||||
|
||||
using namespace nix;
|
||||
|
||||
static auto cacheDir = Path{};
|
||||
|
||||
Path resolveCacheFile(Path lib) {
|
||||
std::replace(lib.begin(), lib.end(), '/', '%');
|
||||
return cacheDir + "/" + lib;
|
||||
}
|
||||
|
||||
std::set<string> readCacheFile(const Path & file) {
|
||||
return tokenizeString<set<string>>(readFile(file), "\n");
|
||||
}
|
||||
|
||||
void writeCacheFile(const Path & file, std::set<string> & deps) {
|
||||
std::ofstream fp;
|
||||
fp.open(file);
|
||||
for (auto & d : deps) {
|
||||
fp << d << "\n";
|
||||
}
|
||||
fp.close();
|
||||
}
|
||||
|
||||
std::string findDylibName(bool should_swap, ptrdiff_t dylib_command_start) {
|
||||
struct dylib_command *dylc = (struct dylib_command*)dylib_command_start;
|
||||
return std::string((char*)(dylib_command_start + DO_SWAP(should_swap, dylc->dylib.name.offset)));
|
||||
}
|
||||
|
||||
std::set<std::string> runResolver(const Path & filename) {
|
||||
int fd = open(filename.c_str(), O_RDONLY);
|
||||
struct stat s;
|
||||
fstat(fd, &s);
|
||||
void *obj = mmap(NULL, s.st_size, PROT_READ, MAP_SHARED, fd, 0);
|
||||
|
||||
ptrdiff_t mach64_offset = 0;
|
||||
|
||||
uint32_t magic = ((struct mach_header_64*)obj)->magic;
|
||||
if(magic == FAT_CIGAM || magic == FAT_MAGIC) {
|
||||
bool should_swap = magic == FAT_CIGAM;
|
||||
uint32_t narches = DO_SWAP(should_swap, ((struct fat_header*)obj)->nfat_arch);
|
||||
|
||||
for(uint32_t iter = 0; iter < narches; iter++) {
|
||||
ptrdiff_t header_offset = (ptrdiff_t)obj + sizeof(struct fat_header) * (iter + 1);
|
||||
struct fat_arch* arch = (struct fat_arch*)header_offset;
|
||||
if(DO_SWAP(should_swap, arch->cputype) == CPU_TYPE_X86_64) {
|
||||
mach64_offset = (ptrdiff_t)DO_SWAP(should_swap, arch->offset);
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (mach64_offset == 0) {
|
||||
printMsg(lvlError, format("Could not find any mach64 blobs in file ‘%1%’, continuing...") % filename);
|
||||
return std::set<string>();
|
||||
}
|
||||
} else if (magic == MH_MAGIC_64 || magic == MH_CIGAM_64) {
|
||||
mach64_offset = 0;
|
||||
} else {
|
||||
printMsg(lvlError, format("Object file has unknown magic number ‘%1%’, skipping it...") % magic);
|
||||
return std::set<string>();
|
||||
}
|
||||
|
||||
ptrdiff_t mach_header_offset = (ptrdiff_t)obj + mach64_offset;
|
||||
struct mach_header_64 *m_header = (struct mach_header_64 *)mach_header_offset;
|
||||
|
||||
bool should_swap = magic == MH_CIGAM_64;
|
||||
ptrdiff_t cmd_offset = mach_header_offset + sizeof(struct mach_header_64);
|
||||
|
||||
std::set<string> libs;
|
||||
for(uint32_t i = 0; i < DO_SWAP(should_swap, m_header->ncmds); i++) {
|
||||
struct load_command *cmd = (struct load_command*)cmd_offset;
|
||||
switch(DO_SWAP(should_swap, cmd->cmd)) {
|
||||
case LC_LOAD_UPWARD_DYLIB:
|
||||
case LC_LOAD_DYLIB:
|
||||
case LC_REEXPORT_DYLIB:
|
||||
libs.insert(findDylibName(should_swap, cmd_offset));
|
||||
break;
|
||||
}
|
||||
cmd_offset += DO_SWAP(should_swap, cmd->cmdsize);
|
||||
}
|
||||
|
||||
return libs;
|
||||
}
|
||||
|
||||
bool isSymlink(const Path & path) {
|
||||
struct stat st;
|
||||
if(lstat(path.c_str(), &st))
|
||||
throw SysError(format("getting attributes of path ‘%1%’") % path);
|
||||
|
||||
return S_ISLNK(st.st_mode);
|
||||
}
|
||||
|
||||
Path resolveSymlink(const Path & path) {
|
||||
char buf[PATH_MAX];
|
||||
ssize_t len = readlink(path.c_str(), buf, sizeof(buf) - 1);
|
||||
if(len != -1) {
|
||||
buf[len] = 0;
|
||||
return Path(buf);
|
||||
} else {
|
||||
throw SysError(format("readlink('%1%')") % path);
|
||||
}
|
||||
}
|
||||
|
||||
std::set<string> resolveTree(const Path & path, PathSet & deps) {
|
||||
std::set<string> results;
|
||||
if(deps.find(path) != deps.end()) {
|
||||
return std::set<string>();
|
||||
}
|
||||
deps.insert(path);
|
||||
for (auto & lib : runResolver(path)) {
|
||||
results.insert(lib);
|
||||
for (auto & p : resolveTree(lib, deps)) {
|
||||
results.insert(p);
|
||||
}
|
||||
}
|
||||
return results;
|
||||
}
|
||||
|
||||
std::set<string> getPath(const Path & path) {
|
||||
Path cacheFile = resolveCacheFile(path);
|
||||
if(pathExists(cacheFile)) {
|
||||
return readCacheFile(cacheFile);
|
||||
}
|
||||
|
||||
std::set<string> deps;
|
||||
std::set<string> paths;
|
||||
paths.insert(path);
|
||||
|
||||
Path next_path = Path(path);
|
||||
while(isSymlink(next_path)) {
|
||||
next_path = resolveSymlink(next_path);
|
||||
paths.insert(next_path);
|
||||
}
|
||||
|
||||
for(auto & t : resolveTree(next_path, deps)) {
|
||||
paths.insert(t);
|
||||
}
|
||||
|
||||
writeCacheFile(cacheFile, paths);
|
||||
|
||||
return paths;
|
||||
}
|
||||
|
||||
int main(int argc, char ** argv) {
|
||||
return handleExceptions(argv[0], [&]() {
|
||||
initNix();
|
||||
|
||||
struct utsname _uname;
|
||||
|
||||
uname(&_uname);
|
||||
|
||||
auto cacheParentDir = (format("%1%/dependency-maps") % settings.nixStateDir).str();
|
||||
|
||||
cacheDir = (format("%1%/%2%-%3%-%4%")
|
||||
% cacheParentDir
|
||||
% _uname.machine
|
||||
% _uname.sysname
|
||||
% _uname.release).str();
|
||||
|
||||
mkdir(cacheParentDir.c_str(), 0755);
|
||||
mkdir(cacheDir.c_str(), 0755);
|
||||
|
||||
auto store = openStore();
|
||||
|
||||
auto drv = store->derivationFromPath(Path(argv[1]));
|
||||
Strings impurePaths = tokenizeString<Strings>(get(drv.env, "__impureHostDeps"));
|
||||
|
||||
std::set<string> all_paths;
|
||||
|
||||
for (auto & path : impurePaths) {
|
||||
for(auto & p : getPath(path)) {
|
||||
all_paths.insert(p);
|
||||
}
|
||||
}
|
||||
|
||||
std::cout << "extra-chroot-dirs" << std::endl;
|
||||
for(auto & path : all_paths) {
|
||||
std::cout << path << std::endl;
|
||||
}
|
||||
std::cout << std::endl;
|
||||
});
|
||||
}
|
Loading…
Reference in a new issue