max/nix-super
1
0
Fork 0
mirror of https://github.com/privatevoid-net/nix-super.git synced 2024-11-22 14:06:16 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

Merge pull request #10432 from obsidiansystems/delete-resolve-system-dependencies

Browse source 
Remove `resolve-system-dependencies`
This commit is contained in:
Eelco Dolstra 2024-04-08 18:41:14 +02:00 committed by GitHub
commit c313394ae9
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
4 changed files with 0 additions and 206 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
.gitignore vendored
View file

@ -118,8 +118,6 @@ perl/Makefile.config
/misc/systemd/nix-daemon.conf
/misc/upstart/nix-daemon.conf
/src/resolve-system-dependencies/resolve-system-dependencies
outputs/
*.a

1
Makefile
View file

@ -21,7 +21,6 @@ makefiles = \
src/libutil-c/local.mk \
src/libstore-c/local.mk \
src/libexpr-c/local.mk \
src/resolve-system-dependencies/local.mk \
scripts/local.mk \
misc/bash/local.mk \
misc/fish/local.mk \

13
src/resolve-system-dependencies/local.mk
View file

@ -1,13 +0,0 @@
ifdef HOST_DARWIN
programs += resolve-system-dependencies
endif
resolve-system-dependencies_DIR := $(d)
resolve-system-dependencies_INSTALL_DIR := $(libexecdir)/nix
resolve-system-dependencies_CXXFLAGS += $(INCLUDE_libutil) $(INCLUDE_libstore) $(INCLUDE_libmain)
resolve-system-dependencies_LIBS := libstore libmain libutil
resolve-system-dependencies_SOURCES := $(d)/resolve-system-dependencies.cc

190
src/resolve-system-dependencies/resolve-system-dependencies.cc
View file

@ -1,190 +0,0 @@
#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<std::string> readCacheFile(const Path & file)
{
return tokenizeString<std::set<std::string>>(readFile(file), "\n");
}
std::set<std::string> runResolver(const Path & filename)
{
AutoCloseFD fd = open(filename.c_str(), O_RDONLY);
if (!fd)
throw SysError("opening '%s'", filename);
struct stat st;
if (fstat(fd.get(), &st))
throw SysError("statting '%s'", filename);
if (!S_ISREG(st.st_mode)) {
printError("file '%s' is not a regular MACH binary", filename);
return {};
}
if (st.st_size < sizeof(mach_header_64)) {
printError("file '%s' is too short for a MACH binary", filename);
return {};
}
char* obj = (char*) mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd.get(), 0);
if (!obj)
throw SysError("mmapping '%s'", filename);
ptrdiff_t mach64_offset = 0;
uint32_t magic = ((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, ((fat_header *) obj)->nfat_arch);
for (uint32_t i = 0; i < narches; i++) {
fat_arch* arch = (fat_arch*) (obj + sizeof(fat_header) + sizeof(fat_arch) * i);
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) {
printError("could not find any mach64 blobs in file '%1%', continuing...", filename);
return {};
}
} else if (magic == MH_MAGIC_64 || magic == MH_CIGAM_64) {
mach64_offset = 0;
} else {
printError("Object file has unknown magic number '%1%', skipping it...", magic);
return {};
}
mach_header_64 * m_header = (mach_header_64 *) (obj + mach64_offset);
bool should_swap = magic == MH_CIGAM_64;
ptrdiff_t cmd_offset = mach64_offset + sizeof(mach_header_64);
std::set<std::string> libs;
for (uint32_t i = 0; i < DO_SWAP(should_swap, m_header->ncmds); i++) {
load_command * cmd = (load_command *) (obj + cmd_offset);
switch(DO_SWAP(should_swap, cmd->cmd)) {
case LC_LOAD_UPWARD_DYLIB:
case LC_LOAD_DYLIB:
case LC_REEXPORT_DYLIB:
libs.insert(std::string((char *) cmd + ((dylib_command*) cmd)->dylib.name.offset));
break;
}
cmd_offset += DO_SWAP(should_swap, cmd->cmdsize);
}
return libs;
}
bool isSymlink(const Path & path)
{
return S_ISLNK(lstat(path).st_mode);
}
Path resolveSymlink(const Path & path)
{
auto target = readLink(path);
return hasPrefix(target, "/")
? target
: concatStrings(dirOf(path), "/", target);
}
std::set<std::string> resolveTree(const Path & path, PathSet & deps)
{
std::set<std::string> results;
if (!deps.insert(path).second) return {};
for (auto & lib : runResolver(path)) {
results.insert(lib);
for (auto & p : resolveTree(lib, deps)) {
results.insert(p);
}
}
return results;
}
std::set<std::string> getPath(const Path & path)
{
if (hasPrefix(path, "/dev")) return {};
Path cacheFile = resolveCacheFile(path);
if (pathExists(cacheFile))
return readCacheFile(cacheFile);
std::set<std::string> deps, paths;
paths.insert(path);
Path nextPath(path);
while (isSymlink(nextPath)) {
nextPath = resolveSymlink(nextPath);
paths.insert(nextPath);
}
for (auto & t : resolveTree(nextPath, deps))
paths.insert(t);
writeFile(cacheFile, concatStringsSep("\n", paths));
return paths;
}
int main(int argc, char ** argv)
{
return handleExceptions(argv[0], [&]() {
initNix();
struct utsname _uname;
uname(&_uname);
auto cacheParentDir = fmt("%1%/dependency-maps", settings.nixStateDir);
cacheDir = fmt("%1%/%2%-%3%-%4%", cacheParentDir, _uname.machine, _uname.sysname, _uname.release);
mkdir(cacheParentDir.c_str(), 0755);
mkdir(cacheDir.c_str(), 0755);
auto store = openStore();
StringSet impurePaths;
if (std::string(argv[1]) == "--test")
impurePaths.insert(argv[2]);
else {
auto drv = store->derivationFromPath(store->parseStorePath(argv[1]));
impurePaths = tokenizeString<StringSet>(getOr(drv.env, "__impureHostDeps", ""));
impurePaths.insert("/usr/lib/libSystem.dylib");
}
std::set<std::string> allPaths;
for (auto & path : impurePaths)
for (auto & p : getPath(path))
allPaths.insert(p);
std::cout << "extra-chroot-dirs" << std::endl;
for (auto & path : allPaths)
std::cout << path << std::endl;
std::cout << std::endl;
});
}