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#include "archive.hh"
#include "compression.hh"
#include "derivations.hh"
#include "fs-accessor.hh"
#include "globals.hh"
#include "store-api.hh"
namespace nix {
LocalFSStore::LocalFSStore(const Params& params) : Store(params) {}
struct LocalStoreAccessor : public FSAccessor {
ref<LocalFSStore> store;
LocalStoreAccessor(ref<LocalFSStore> store) : store(store) {}
Path toRealPath(const Path& path) {
Path storePath = store->toStorePath(path);
if (!store->isValidPath(storePath))
throw InvalidPath(format("path '%1%' is not a valid store path") %
storePath);
return store->getRealStoreDir() + std::string(path, store->storeDir.size());
}
FSAccessor::Stat stat(const Path& path) override {
auto realPath = toRealPath(path);
struct stat st;
if (lstat(realPath.c_str(), &st)) {
if (errno == ENOENT || errno == ENOTDIR)
return {Type::tMissing, 0, false};
throw SysError(format("getting status of '%1%'") % path);
}
if (!S_ISREG(st.st_mode) && !S_ISDIR(st.st_mode) && !S_ISLNK(st.st_mode))
throw Error(format("file '%1%' has unsupported type") % path);
return {S_ISREG(st.st_mode)
? Type::tRegular
: S_ISLNK(st.st_mode) ? Type::tSymlink : Type::tDirectory,
S_ISREG(st.st_mode) ? (uint64_t)st.st_size : 0,
S_ISREG(st.st_mode) && st.st_mode & S_IXUSR};
}
StringSet readDirectory(const Path& path) override {
auto realPath = toRealPath(path);
auto entries = nix::readDirectory(realPath);
StringSet res;
for (auto& entry : entries) res.insert(entry.name);
return res;
}
std::string readFile(const Path& path) override {
return nix::readFile(toRealPath(path));
}
std::string readLink(const Path& path) override {
return nix::readLink(toRealPath(path));
}
};
ref<FSAccessor> LocalFSStore::getFSAccessor() {
return make_ref<LocalStoreAccessor>(ref<LocalFSStore>(
std::dynamic_pointer_cast<LocalFSStore>(shared_from_this())));
}
void LocalFSStore::narFromPath(const Path& path, Sink& sink) {
if (!isValidPath(path)) throw Error(format("path '%s' is not valid") % path);
dumpPath(getRealStoreDir() + std::string(path, storeDir.size()), sink);
}
const string LocalFSStore::drvsLogDir = "drvs";
std::shared_ptr<std::string> LocalFSStore::getBuildLog(const Path& path_) {
auto path(path_);
assertStorePath(path);
if (!isDerivation(path)) {
try {
path = queryPathInfo(path)->deriver;
} catch (InvalidPath&) {
return nullptr;
}
if (path == "") return nullptr;
}
string baseName = baseNameOf(path);
for (int j = 0; j < 2; j++) {
Path logPath = j == 0 ? fmt("%s/%s/%s/%s", logDir, drvsLogDir,
string(baseName, 0, 2), string(baseName, 2))
: fmt("%s/%s/%s", logDir, drvsLogDir, baseName);
Path logBz2Path = logPath + ".bz2";
if (pathExists(logPath))
return std::make_shared<std::string>(readFile(logPath));
else if (pathExists(logBz2Path)) {
try {
return decompress("bzip2", readFile(logBz2Path));
} catch (Error&) {
}
}
}
return nullptr;
}
} // namespace nix
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