forked from lix-project/lix
a5c6347ff0
This makes things more efficient (we don't need to use an SSH master connection, and we only start a single remote process) and gets rid of locking issues (the remote nix-store process will keep inputs and outputs locked as long as they're needed). It also makes it more or less secure to connect directly to the root account on the build machine, using a forced command (e.g. ‘command="nix-store --serve --write"’). This bypasses the Nix daemon and is therefore more efficient. Also, don't call nix-store to import the output paths.
1127 lines
37 KiB
C++
1127 lines
37 KiB
C++
#include "globals.hh"
|
|
#include "misc.hh"
|
|
#include "archive.hh"
|
|
#include "shared.hh"
|
|
#include "dotgraph.hh"
|
|
#include "xmlgraph.hh"
|
|
#include "local-store.hh"
|
|
#include "util.hh"
|
|
#include "serve-protocol.hh"
|
|
#include "worker-protocol.hh"
|
|
|
|
#include <iostream>
|
|
#include <algorithm>
|
|
#include <cstdio>
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
|
|
#include <bzlib.h>
|
|
|
|
|
|
using namespace nix;
|
|
using std::cin;
|
|
using std::cout;
|
|
|
|
|
|
typedef void (* Operation) (Strings opFlags, Strings opArgs);
|
|
|
|
|
|
void printHelp()
|
|
{
|
|
showManPage("nix-store");
|
|
}
|
|
|
|
|
|
static Path gcRoot;
|
|
static int rootNr = 0;
|
|
static bool indirectRoot = false;
|
|
static bool noOutput = false;
|
|
|
|
|
|
LocalStore & ensureLocalStore()
|
|
{
|
|
LocalStore * store2(dynamic_cast<LocalStore *>(store.get()));
|
|
if (!store2) throw Error("you don't have sufficient rights to use this command");
|
|
return *store2;
|
|
}
|
|
|
|
|
|
static Path useDeriver(Path path)
|
|
{
|
|
if (!isDerivation(path)) {
|
|
path = store->queryDeriver(path);
|
|
if (path == "")
|
|
throw Error(format("deriver of path `%1%' is not known") % path);
|
|
}
|
|
return path;
|
|
}
|
|
|
|
|
|
/* Realise the given path. For a derivation that means build it; for
|
|
other paths it means ensure their validity. */
|
|
static PathSet realisePath(Path path, bool build = true)
|
|
{
|
|
DrvPathWithOutputs p = parseDrvPathWithOutputs(path);
|
|
|
|
if (isDerivation(p.first)) {
|
|
if (build) store->buildPaths(singleton<PathSet>(path));
|
|
Derivation drv = derivationFromPath(*store, p.first);
|
|
rootNr++;
|
|
|
|
if (p.second.empty())
|
|
foreach (DerivationOutputs::iterator, i, drv.outputs) p.second.insert(i->first);
|
|
|
|
PathSet outputs;
|
|
foreach (StringSet::iterator, j, p.second) {
|
|
DerivationOutputs::iterator i = drv.outputs.find(*j);
|
|
if (i == drv.outputs.end())
|
|
throw Error(format("derivation `%1%' does not have an output named `%2%'") % p.first % *j);
|
|
Path outPath = i->second.path;
|
|
if (gcRoot == "")
|
|
printGCWarning();
|
|
else {
|
|
Path rootName = gcRoot;
|
|
if (rootNr > 1) rootName += "-" + int2String(rootNr);
|
|
if (i->first != "out") rootName += "-" + i->first;
|
|
outPath = addPermRoot(*store, outPath, rootName, indirectRoot);
|
|
}
|
|
outputs.insert(outPath);
|
|
}
|
|
return outputs;
|
|
}
|
|
|
|
else {
|
|
if (build) store->ensurePath(path);
|
|
else if (!store->isValidPath(path)) throw Error(format("path `%1%' does not exist and cannot be created") % path);
|
|
if (gcRoot == "")
|
|
printGCWarning();
|
|
else {
|
|
Path rootName = gcRoot;
|
|
rootNr++;
|
|
if (rootNr > 1) rootName += "-" + int2String(rootNr);
|
|
path = addPermRoot(*store, path, rootName, indirectRoot);
|
|
}
|
|
return singleton<PathSet>(path);
|
|
}
|
|
}
|
|
|
|
|
|
/* Realise the given paths. */
|
|
static void opRealise(Strings opFlags, Strings opArgs)
|
|
{
|
|
bool dryRun = false;
|
|
BuildMode buildMode = bmNormal;
|
|
bool ignoreUnknown = false;
|
|
|
|
foreach (Strings::iterator, i, opFlags)
|
|
if (*i == "--dry-run") dryRun = true;
|
|
else if (*i == "--repair") buildMode = bmRepair;
|
|
else if (*i == "--check") buildMode = bmCheck;
|
|
else if (*i == "--ignore-unknown") ignoreUnknown = true;
|
|
else throw UsageError(format("unknown flag `%1%'") % *i);
|
|
|
|
Paths paths;
|
|
foreach (Strings::iterator, i, opArgs) {
|
|
DrvPathWithOutputs p = parseDrvPathWithOutputs(*i);
|
|
paths.push_back(makeDrvPathWithOutputs(followLinksToStorePath(p.first), p.second));
|
|
}
|
|
|
|
unsigned long long downloadSize, narSize;
|
|
PathSet willBuild, willSubstitute, unknown;
|
|
queryMissing(*store, PathSet(paths.begin(), paths.end()),
|
|
willBuild, willSubstitute, unknown, downloadSize, narSize);
|
|
|
|
if (ignoreUnknown) {
|
|
Paths paths2;
|
|
foreach (Paths::iterator, i, paths)
|
|
if (unknown.find(*i) == unknown.end()) paths2.push_back(*i);
|
|
paths = paths2;
|
|
unknown = PathSet();
|
|
}
|
|
|
|
printMissing(willBuild, willSubstitute, unknown, downloadSize, narSize);
|
|
|
|
if (dryRun) return;
|
|
|
|
/* Build all paths at the same time to exploit parallelism. */
|
|
store->buildPaths(PathSet(paths.begin(), paths.end()), buildMode);
|
|
|
|
if (!ignoreUnknown)
|
|
foreach (Paths::iterator, i, paths) {
|
|
PathSet paths = realisePath(*i, false);
|
|
if (!noOutput)
|
|
foreach (PathSet::iterator, j, paths)
|
|
cout << format("%1%\n") % *j;
|
|
}
|
|
}
|
|
|
|
|
|
/* Add files to the Nix store and print the resulting paths. */
|
|
static void opAdd(Strings opFlags, Strings opArgs)
|
|
{
|
|
if (!opFlags.empty()) throw UsageError("unknown flag");
|
|
|
|
for (Strings::iterator i = opArgs.begin(); i != opArgs.end(); ++i)
|
|
cout << format("%1%\n") % store->addToStore(*i);
|
|
}
|
|
|
|
|
|
/* Preload the output of a fixed-output derivation into the Nix
|
|
store. */
|
|
static void opAddFixed(Strings opFlags, Strings opArgs)
|
|
{
|
|
bool recursive = false;
|
|
|
|
for (Strings::iterator i = opFlags.begin();
|
|
i != opFlags.end(); ++i)
|
|
if (*i == "--recursive") recursive = true;
|
|
else throw UsageError(format("unknown flag `%1%'") % *i);
|
|
|
|
if (opArgs.empty())
|
|
throw UsageError("first argument must be hash algorithm");
|
|
|
|
HashType hashAlgo = parseHashType(opArgs.front());
|
|
opArgs.pop_front();
|
|
|
|
for (Strings::iterator i = opArgs.begin(); i != opArgs.end(); ++i)
|
|
cout << format("%1%\n") % store->addToStore(*i, recursive, hashAlgo);
|
|
}
|
|
|
|
|
|
/* Hack to support caching in `nix-prefetch-url'. */
|
|
static void opPrintFixedPath(Strings opFlags, Strings opArgs)
|
|
{
|
|
bool recursive = false;
|
|
|
|
for (Strings::iterator i = opFlags.begin();
|
|
i != opFlags.end(); ++i)
|
|
if (*i == "--recursive") recursive = true;
|
|
else throw UsageError(format("unknown flag `%1%'") % *i);
|
|
|
|
if (opArgs.size() != 3)
|
|
throw UsageError(format("`--print-fixed-path' requires three arguments"));
|
|
|
|
Strings::iterator i = opArgs.begin();
|
|
HashType hashAlgo = parseHashType(*i++);
|
|
string hash = *i++;
|
|
string name = *i++;
|
|
|
|
cout << format("%1%\n") %
|
|
makeFixedOutputPath(recursive, hashAlgo,
|
|
parseHash16or32(hashAlgo, hash), name);
|
|
}
|
|
|
|
|
|
static PathSet maybeUseOutputs(const Path & storePath, bool useOutput, bool forceRealise)
|
|
{
|
|
if (forceRealise) realisePath(storePath);
|
|
if (useOutput && isDerivation(storePath)) {
|
|
Derivation drv = derivationFromPath(*store, storePath);
|
|
PathSet outputs;
|
|
foreach (DerivationOutputs::iterator, i, drv.outputs)
|
|
outputs.insert(i->second.path);
|
|
return outputs;
|
|
}
|
|
else return singleton<PathSet>(storePath);
|
|
}
|
|
|
|
|
|
/* Some code to print a tree representation of a derivation dependency
|
|
graph. Topological sorting is used to keep the tree relatively
|
|
flat. */
|
|
|
|
const string treeConn = "+---";
|
|
const string treeLine = "| ";
|
|
const string treeNull = " ";
|
|
|
|
|
|
static void printTree(const Path & path,
|
|
const string & firstPad, const string & tailPad, PathSet & done)
|
|
{
|
|
if (done.find(path) != done.end()) {
|
|
cout << format("%1%%2% [...]\n") % firstPad % path;
|
|
return;
|
|
}
|
|
done.insert(path);
|
|
|
|
cout << format("%1%%2%\n") % firstPad % path;
|
|
|
|
PathSet references;
|
|
store->queryReferences(path, references);
|
|
|
|
/* Topologically sort under the relation A < B iff A \in
|
|
closure(B). That is, if derivation A is an (possibly indirect)
|
|
input of B, then A is printed first. This has the effect of
|
|
flattening the tree, preventing deeply nested structures. */
|
|
Paths sorted = topoSortPaths(*store, references);
|
|
reverse(sorted.begin(), sorted.end());
|
|
|
|
foreach (Paths::iterator, i, sorted) {
|
|
Paths::iterator j = i; ++j;
|
|
printTree(*i, tailPad + treeConn,
|
|
j == sorted.end() ? tailPad + treeNull : tailPad + treeLine,
|
|
done);
|
|
}
|
|
}
|
|
|
|
|
|
/* Perform various sorts of queries. */
|
|
static void opQuery(Strings opFlags, Strings opArgs)
|
|
{
|
|
enum { qOutputs, qRequisites, qReferences, qReferrers
|
|
, qReferrersClosure, qDeriver, qBinding, qHash, qSize
|
|
, qTree, qGraph, qXml, qResolve, qRoots } query = qOutputs;
|
|
bool useOutput = false;
|
|
bool includeOutputs = false;
|
|
bool forceRealise = false;
|
|
string bindingName;
|
|
|
|
foreach (Strings::iterator, i, opFlags)
|
|
if (*i == "--outputs") query = qOutputs;
|
|
else if (*i == "--requisites" || *i == "-R") query = qRequisites;
|
|
else if (*i == "--references") query = qReferences;
|
|
else if (*i == "--referrers" || *i == "--referers") query = qReferrers;
|
|
else if (*i == "--referrers-closure" || *i == "--referers-closure") query = qReferrersClosure;
|
|
else if (*i == "--deriver" || *i == "-d") query = qDeriver;
|
|
else if (*i == "--binding" || *i == "-b") {
|
|
if (opArgs.size() == 0)
|
|
throw UsageError("expected binding name");
|
|
bindingName = opArgs.front();
|
|
opArgs.pop_front();
|
|
query = qBinding;
|
|
}
|
|
else if (*i == "--hash") query = qHash;
|
|
else if (*i == "--size") query = qSize;
|
|
else if (*i == "--tree") query = qTree;
|
|
else if (*i == "--graph") query = qGraph;
|
|
else if (*i == "--xml") query = qXml;
|
|
else if (*i == "--resolve") query = qResolve;
|
|
else if (*i == "--roots") query = qRoots;
|
|
else if (*i == "--use-output" || *i == "-u") useOutput = true;
|
|
else if (*i == "--force-realise" || *i == "--force-realize" || *i == "-f") forceRealise = true;
|
|
else if (*i == "--include-outputs") includeOutputs = true;
|
|
else throw UsageError(format("unknown flag `%1%'") % *i);
|
|
|
|
switch (query) {
|
|
|
|
case qOutputs: {
|
|
foreach (Strings::iterator, i, opArgs) {
|
|
*i = followLinksToStorePath(*i);
|
|
if (forceRealise) realisePath(*i);
|
|
Derivation drv = derivationFromPath(*store, *i);
|
|
foreach (DerivationOutputs::iterator, j, drv.outputs)
|
|
cout << format("%1%\n") % j->second.path;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case qRequisites:
|
|
case qReferences:
|
|
case qReferrers:
|
|
case qReferrersClosure: {
|
|
PathSet paths;
|
|
foreach (Strings::iterator, i, opArgs) {
|
|
PathSet ps = maybeUseOutputs(followLinksToStorePath(*i), useOutput, forceRealise);
|
|
foreach (PathSet::iterator, j, ps) {
|
|
if (query == qRequisites) computeFSClosure(*store, *j, paths, false, includeOutputs);
|
|
else if (query == qReferences) store->queryReferences(*j, paths);
|
|
else if (query == qReferrers) store->queryReferrers(*j, paths);
|
|
else if (query == qReferrersClosure) computeFSClosure(*store, *j, paths, true);
|
|
}
|
|
}
|
|
Paths sorted = topoSortPaths(*store, paths);
|
|
for (Paths::reverse_iterator i = sorted.rbegin();
|
|
i != sorted.rend(); ++i)
|
|
cout << format("%s\n") % *i;
|
|
break;
|
|
}
|
|
|
|
case qDeriver:
|
|
foreach (Strings::iterator, i, opArgs) {
|
|
Path deriver = store->queryDeriver(followLinksToStorePath(*i));
|
|
cout << format("%1%\n") %
|
|
(deriver == "" ? "unknown-deriver" : deriver);
|
|
}
|
|
break;
|
|
|
|
case qBinding:
|
|
foreach (Strings::iterator, i, opArgs) {
|
|
Path path = useDeriver(followLinksToStorePath(*i));
|
|
Derivation drv = derivationFromPath(*store, path);
|
|
StringPairs::iterator j = drv.env.find(bindingName);
|
|
if (j == drv.env.end())
|
|
throw Error(format("derivation `%1%' has no environment binding named `%2%'")
|
|
% path % bindingName);
|
|
cout << format("%1%\n") % j->second;
|
|
}
|
|
break;
|
|
|
|
case qHash:
|
|
case qSize:
|
|
foreach (Strings::iterator, i, opArgs) {
|
|
PathSet paths = maybeUseOutputs(followLinksToStorePath(*i), useOutput, forceRealise);
|
|
foreach (PathSet::iterator, j, paths) {
|
|
ValidPathInfo info = store->queryPathInfo(*j);
|
|
if (query == qHash) {
|
|
assert(info.hash.type == htSHA256);
|
|
cout << format("sha256:%1%\n") % printHash32(info.hash);
|
|
} else if (query == qSize)
|
|
cout << format("%1%\n") % info.narSize;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case qTree: {
|
|
PathSet done;
|
|
foreach (Strings::iterator, i, opArgs)
|
|
printTree(followLinksToStorePath(*i), "", "", done);
|
|
break;
|
|
}
|
|
|
|
case qGraph: {
|
|
PathSet roots;
|
|
foreach (Strings::iterator, i, opArgs) {
|
|
PathSet paths = maybeUseOutputs(followLinksToStorePath(*i), useOutput, forceRealise);
|
|
roots.insert(paths.begin(), paths.end());
|
|
}
|
|
printDotGraph(roots);
|
|
break;
|
|
}
|
|
|
|
case qXml: {
|
|
PathSet roots;
|
|
foreach (Strings::iterator, i, opArgs) {
|
|
PathSet paths = maybeUseOutputs(followLinksToStorePath(*i), useOutput, forceRealise);
|
|
roots.insert(paths.begin(), paths.end());
|
|
}
|
|
printXmlGraph(roots);
|
|
break;
|
|
}
|
|
|
|
case qResolve: {
|
|
foreach (Strings::iterator, i, opArgs)
|
|
cout << format("%1%\n") % followLinksToStorePath(*i);
|
|
break;
|
|
}
|
|
|
|
case qRoots: {
|
|
PathSet referrers;
|
|
foreach (Strings::iterator, i, opArgs) {
|
|
PathSet paths = maybeUseOutputs(followLinksToStorePath(*i), useOutput, forceRealise);
|
|
foreach (PathSet::iterator, j, paths)
|
|
computeFSClosure(*store, *j, referrers, true,
|
|
settings.gcKeepOutputs, settings.gcKeepDerivations);
|
|
}
|
|
Roots roots = store->findRoots();
|
|
foreach (Roots::iterator, i, roots)
|
|
if (referrers.find(i->second) != referrers.end())
|
|
cout << format("%1%\n") % i->first;
|
|
break;
|
|
}
|
|
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
|
|
|
|
static string shellEscape(const string & s)
|
|
{
|
|
string r;
|
|
foreach (string::const_iterator, i, s)
|
|
if (*i == '\'') r += "'\\''"; else r += *i;
|
|
return r;
|
|
}
|
|
|
|
|
|
static void opPrintEnv(Strings opFlags, Strings opArgs)
|
|
{
|
|
if (!opFlags.empty()) throw UsageError("unknown flag");
|
|
if (opArgs.size() != 1) throw UsageError("`--print-env' requires one derivation store path");
|
|
|
|
Path drvPath = opArgs.front();
|
|
Derivation drv = derivationFromPath(*store, drvPath);
|
|
|
|
/* Print each environment variable in the derivation in a format
|
|
that can be sourced by the shell. */
|
|
foreach (StringPairs::iterator, i, drv.env)
|
|
cout << format("export %1%; %1%='%2%'\n") % i->first % shellEscape(i->second);
|
|
|
|
/* Also output the arguments. This doesn't preserve whitespace in
|
|
arguments. */
|
|
cout << "export _args; _args='";
|
|
foreach (Strings::iterator, i, drv.args) {
|
|
if (i != drv.args.begin()) cout << ' ';
|
|
cout << shellEscape(*i);
|
|
}
|
|
cout << "'\n";
|
|
}
|
|
|
|
|
|
static void opReadLog(Strings opFlags, Strings opArgs)
|
|
{
|
|
if (!opFlags.empty()) throw UsageError("unknown flag");
|
|
|
|
foreach (Strings::iterator, i, opArgs) {
|
|
Path path = useDeriver(followLinksToStorePath(*i));
|
|
|
|
string baseName = baseNameOf(path);
|
|
bool found = false;
|
|
|
|
for (int j = 0; j < 2; j++) {
|
|
|
|
Path logPath =
|
|
j == 0
|
|
? (format("%1%/%2%/%3%/%4%") % settings.nixLogDir % drvsLogDir % string(baseName, 0, 2) % string(baseName, 2)).str()
|
|
: (format("%1%/%2%/%3%") % settings.nixLogDir % drvsLogDir % baseName).str();
|
|
Path logBz2Path = logPath + ".bz2";
|
|
|
|
if (pathExists(logPath)) {
|
|
/* !!! Make this run in O(1) memory. */
|
|
string log = readFile(logPath);
|
|
writeFull(STDOUT_FILENO, (const unsigned char *) log.data(), log.size());
|
|
found = true;
|
|
break;
|
|
}
|
|
|
|
else if (pathExists(logBz2Path)) {
|
|
AutoCloseFD fd = open(logBz2Path.c_str(), O_RDONLY);
|
|
FILE * f = 0;
|
|
if (fd == -1 || (f = fdopen(fd.borrow(), "r")) == 0)
|
|
throw SysError(format("opening file `%1%'") % logBz2Path);
|
|
int err;
|
|
BZFILE * bz = BZ2_bzReadOpen(&err, f, 0, 0, 0, 0);
|
|
if (!bz) throw Error(format("cannot open bzip2 file `%1%'") % logBz2Path);
|
|
unsigned char buf[128 * 1024];
|
|
do {
|
|
int n = BZ2_bzRead(&err, bz, buf, sizeof(buf));
|
|
if (err != BZ_OK && err != BZ_STREAM_END)
|
|
throw Error(format("error reading bzip2 file `%1%'") % logBz2Path);
|
|
writeFull(STDOUT_FILENO, buf, n);
|
|
} while (err != BZ_STREAM_END);
|
|
BZ2_bzReadClose(&err, bz);
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!found) {
|
|
for (auto & i : settings.logServers) {
|
|
string prefix = i;
|
|
if (!prefix.empty() && prefix.back() != '/') prefix += '/';
|
|
string url = prefix + baseName;
|
|
try {
|
|
string log = runProgram(CURL, true, {"--fail", "--location", "--silent", "--", url});
|
|
std::cout << "(using build log from " << url << ")" << std::endl;
|
|
std::cout << log;
|
|
found = true;
|
|
break;
|
|
} catch (ExecError & e) {
|
|
/* Ignore errors from curl. FIXME: actually, might be
|
|
nice to print a warning on HTTP status != 404. */
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!found) throw Error(format("build log of derivation `%1%' is not available") % path);
|
|
}
|
|
}
|
|
|
|
|
|
static void opDumpDB(Strings opFlags, Strings opArgs)
|
|
{
|
|
if (!opFlags.empty()) throw UsageError("unknown flag");
|
|
if (!opArgs.empty())
|
|
throw UsageError("no arguments expected");
|
|
PathSet validPaths = store->queryAllValidPaths();
|
|
foreach (PathSet::iterator, i, validPaths)
|
|
cout << store->makeValidityRegistration(singleton<PathSet>(*i), true, true);
|
|
}
|
|
|
|
|
|
static void registerValidity(bool reregister, bool hashGiven, bool canonicalise)
|
|
{
|
|
ValidPathInfos infos;
|
|
|
|
while (1) {
|
|
ValidPathInfo info = decodeValidPathInfo(cin, hashGiven);
|
|
if (info.path == "") break;
|
|
if (!store->isValidPath(info.path) || reregister) {
|
|
/* !!! races */
|
|
if (canonicalise)
|
|
canonicalisePathMetaData(info.path, -1);
|
|
if (!hashGiven) {
|
|
HashResult hash = hashPath(htSHA256, info.path);
|
|
info.hash = hash.first;
|
|
info.narSize = hash.second;
|
|
}
|
|
infos.push_back(info);
|
|
}
|
|
}
|
|
|
|
ensureLocalStore().registerValidPaths(infos);
|
|
}
|
|
|
|
|
|
static void opLoadDB(Strings opFlags, Strings opArgs)
|
|
{
|
|
if (!opFlags.empty()) throw UsageError("unknown flag");
|
|
if (!opArgs.empty())
|
|
throw UsageError("no arguments expected");
|
|
registerValidity(true, true, false);
|
|
}
|
|
|
|
|
|
static void opRegisterValidity(Strings opFlags, Strings opArgs)
|
|
{
|
|
bool reregister = false; // !!! maybe this should be the default
|
|
bool hashGiven = false;
|
|
|
|
for (Strings::iterator i = opFlags.begin();
|
|
i != opFlags.end(); ++i)
|
|
if (*i == "--reregister") reregister = true;
|
|
else if (*i == "--hash-given") hashGiven = true;
|
|
else throw UsageError(format("unknown flag `%1%'") % *i);
|
|
|
|
if (!opArgs.empty()) throw UsageError("no arguments expected");
|
|
|
|
registerValidity(reregister, hashGiven, true);
|
|
}
|
|
|
|
|
|
static void opCheckValidity(Strings opFlags, Strings opArgs)
|
|
{
|
|
bool printInvalid = false;
|
|
|
|
for (Strings::iterator i = opFlags.begin();
|
|
i != opFlags.end(); ++i)
|
|
if (*i == "--print-invalid") printInvalid = true;
|
|
else throw UsageError(format("unknown flag `%1%'") % *i);
|
|
|
|
for (Strings::iterator i = opArgs.begin();
|
|
i != opArgs.end(); ++i)
|
|
{
|
|
Path path = followLinksToStorePath(*i);
|
|
if (!store->isValidPath(path)) {
|
|
if (printInvalid)
|
|
cout << format("%1%\n") % path;
|
|
else
|
|
throw Error(format("path `%1%' is not valid") % path);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static string showBytes(unsigned long long bytes)
|
|
{
|
|
return (format("%.2f MiB") % (bytes / (1024.0 * 1024.0))).str();
|
|
}
|
|
|
|
|
|
struct PrintFreed
|
|
{
|
|
bool show;
|
|
const GCResults & results;
|
|
PrintFreed(bool show, const GCResults & results)
|
|
: show(show), results(results) { }
|
|
~PrintFreed()
|
|
{
|
|
if (show)
|
|
cout << format("%1% store paths deleted, %2% freed\n")
|
|
% results.paths.size()
|
|
% showBytes(results.bytesFreed);
|
|
}
|
|
};
|
|
|
|
|
|
static void opGC(Strings opFlags, Strings opArgs)
|
|
{
|
|
bool printRoots = false;
|
|
GCOptions options;
|
|
options.action = GCOptions::gcDeleteDead;
|
|
|
|
GCResults results;
|
|
|
|
/* Do what? */
|
|
foreach (Strings::iterator, i, opFlags)
|
|
if (*i == "--print-roots") printRoots = true;
|
|
else if (*i == "--print-live") options.action = GCOptions::gcReturnLive;
|
|
else if (*i == "--print-dead") options.action = GCOptions::gcReturnDead;
|
|
else if (*i == "--delete") options.action = GCOptions::gcDeleteDead;
|
|
else if (*i == "--max-freed") {
|
|
long long maxFreed = getIntArg<long long>(*i, i, opFlags.end(), true);
|
|
options.maxFreed = maxFreed >= 0 ? maxFreed : 0;
|
|
}
|
|
else throw UsageError(format("bad sub-operation `%1%' in GC") % *i);
|
|
|
|
if (!opArgs.empty()) throw UsageError("no arguments expected");
|
|
|
|
if (printRoots) {
|
|
Roots roots = store->findRoots();
|
|
foreach (Roots::iterator, i, roots)
|
|
cout << i->first << " -> " << i->second << std::endl;
|
|
}
|
|
|
|
else {
|
|
PrintFreed freed(options.action == GCOptions::gcDeleteDead, results);
|
|
store->collectGarbage(options, results);
|
|
|
|
if (options.action != GCOptions::gcDeleteDead)
|
|
foreach (PathSet::iterator, i, results.paths)
|
|
cout << *i << std::endl;
|
|
}
|
|
}
|
|
|
|
|
|
/* Remove paths from the Nix store if possible (i.e., if they do not
|
|
have any remaining referrers and are not reachable from any GC
|
|
roots). */
|
|
static void opDelete(Strings opFlags, Strings opArgs)
|
|
{
|
|
GCOptions options;
|
|
options.action = GCOptions::gcDeleteSpecific;
|
|
|
|
foreach (Strings::iterator, i, opFlags)
|
|
if (*i == "--ignore-liveness") options.ignoreLiveness = true;
|
|
else throw UsageError(format("unknown flag `%1%'") % *i);
|
|
|
|
foreach (Strings::iterator, i, opArgs)
|
|
options.pathsToDelete.insert(followLinksToStorePath(*i));
|
|
|
|
GCResults results;
|
|
PrintFreed freed(true, results);
|
|
store->collectGarbage(options, results);
|
|
}
|
|
|
|
|
|
/* Dump a path as a Nix archive. The archive is written to standard
|
|
output. */
|
|
static void opDump(Strings opFlags, Strings opArgs)
|
|
{
|
|
if (!opFlags.empty()) throw UsageError("unknown flag");
|
|
if (opArgs.size() != 1) throw UsageError("only one argument allowed");
|
|
|
|
FdSink sink(STDOUT_FILENO);
|
|
string path = *opArgs.begin();
|
|
dumpPath(path, sink);
|
|
}
|
|
|
|
|
|
/* Restore a value from a Nix archive. The archive is read from
|
|
standard input. */
|
|
static void opRestore(Strings opFlags, Strings opArgs)
|
|
{
|
|
if (!opFlags.empty()) throw UsageError("unknown flag");
|
|
if (opArgs.size() != 1) throw UsageError("only one argument allowed");
|
|
|
|
FdSource source(STDIN_FILENO);
|
|
restorePath(*opArgs.begin(), source);
|
|
}
|
|
|
|
|
|
static void opExport(Strings opFlags, Strings opArgs)
|
|
{
|
|
bool sign = false;
|
|
for (Strings::iterator i = opFlags.begin();
|
|
i != opFlags.end(); ++i)
|
|
if (*i == "--sign") sign = true;
|
|
else throw UsageError(format("unknown flag `%1%'") % *i);
|
|
|
|
FdSink sink(STDOUT_FILENO);
|
|
Paths sorted = topoSortPaths(*store, PathSet(opArgs.begin(), opArgs.end()));
|
|
reverse(sorted.begin(), sorted.end());
|
|
exportPaths(*store, sorted, sign, sink);
|
|
}
|
|
|
|
|
|
static void opImport(Strings opFlags, Strings opArgs)
|
|
{
|
|
bool requireSignature = false;
|
|
foreach (Strings::iterator, i, opFlags)
|
|
if (*i == "--require-signature") requireSignature = true;
|
|
else throw UsageError(format("unknown flag `%1%'") % *i);
|
|
|
|
if (!opArgs.empty()) throw UsageError("no arguments expected");
|
|
|
|
FdSource source(STDIN_FILENO);
|
|
Paths paths = store->importPaths(requireSignature, source);
|
|
|
|
foreach (Paths::iterator, i, paths)
|
|
cout << format("%1%\n") % *i << std::flush;
|
|
}
|
|
|
|
|
|
/* Initialise the Nix databases. */
|
|
static void opInit(Strings opFlags, Strings opArgs)
|
|
{
|
|
if (!opFlags.empty()) throw UsageError("unknown flag");
|
|
if (!opArgs.empty())
|
|
throw UsageError("no arguments expected");
|
|
/* Doesn't do anything right now; database tables are initialised
|
|
automatically. */
|
|
}
|
|
|
|
|
|
/* Verify the consistency of the Nix environment. */
|
|
static void opVerify(Strings opFlags, Strings opArgs)
|
|
{
|
|
if (!opArgs.empty())
|
|
throw UsageError("no arguments expected");
|
|
|
|
bool checkContents = false;
|
|
bool repair = false;
|
|
|
|
for (Strings::iterator i = opFlags.begin();
|
|
i != opFlags.end(); ++i)
|
|
if (*i == "--check-contents") checkContents = true;
|
|
else if (*i == "--repair") repair = true;
|
|
else throw UsageError(format("unknown flag `%1%'") % *i);
|
|
|
|
if (ensureLocalStore().verifyStore(checkContents, repair)) {
|
|
printMsg(lvlError, "warning: not all errors were fixed");
|
|
exitCode = 1;
|
|
}
|
|
}
|
|
|
|
|
|
/* Verify whether the contents of the given store path have not changed. */
|
|
static void opVerifyPath(Strings opFlags, Strings opArgs)
|
|
{
|
|
if (!opFlags.empty())
|
|
throw UsageError("no flags expected");
|
|
|
|
foreach (Strings::iterator, i, opArgs) {
|
|
Path path = followLinksToStorePath(*i);
|
|
printMsg(lvlTalkative, format("checking path `%1%'...") % path);
|
|
ValidPathInfo info = store->queryPathInfo(path);
|
|
HashResult current = hashPath(info.hash.type, path);
|
|
if (current.first != info.hash) {
|
|
printMsg(lvlError,
|
|
format("path `%1%' was modified! expected hash `%2%', got `%3%'")
|
|
% path % printHash(info.hash) % printHash(current.first));
|
|
exitCode = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/* Repair the contents of the given path by redownloading it using a
|
|
substituter (if available). */
|
|
static void opRepairPath(Strings opFlags, Strings opArgs)
|
|
{
|
|
if (!opFlags.empty())
|
|
throw UsageError("no flags expected");
|
|
|
|
foreach (Strings::iterator, i, opArgs) {
|
|
Path path = followLinksToStorePath(*i);
|
|
ensureLocalStore().repairPath(path);
|
|
}
|
|
}
|
|
|
|
|
|
static void showOptimiseStats(OptimiseStats & stats)
|
|
{
|
|
printMsg(lvlError,
|
|
format("%1% freed by hard-linking %2% files")
|
|
% showBytes(stats.bytesFreed)
|
|
% stats.filesLinked);
|
|
}
|
|
|
|
|
|
/* Optimise the disk space usage of the Nix store by hard-linking
|
|
files with the same contents. */
|
|
static void opOptimise(Strings opFlags, Strings opArgs)
|
|
{
|
|
if (!opArgs.empty() || !opFlags.empty())
|
|
throw UsageError("no arguments expected");
|
|
|
|
OptimiseStats stats;
|
|
try {
|
|
ensureLocalStore().optimiseStore(stats);
|
|
} catch (...) {
|
|
showOptimiseStats(stats);
|
|
throw;
|
|
}
|
|
showOptimiseStats(stats);
|
|
}
|
|
|
|
|
|
static void opQueryFailedPaths(Strings opFlags, Strings opArgs)
|
|
{
|
|
if (!opArgs.empty() || !opFlags.empty())
|
|
throw UsageError("no arguments expected");
|
|
PathSet failed = store->queryFailedPaths();
|
|
foreach (PathSet::iterator, i, failed)
|
|
cout << format("%1%\n") % *i;
|
|
}
|
|
|
|
|
|
static void opClearFailedPaths(Strings opFlags, Strings opArgs)
|
|
{
|
|
if (!opFlags.empty())
|
|
throw UsageError("no flags expected");
|
|
store->clearFailedPaths(PathSet(opArgs.begin(), opArgs.end()));
|
|
}
|
|
|
|
|
|
/* Serve the nix store in a way usable by a restricted ssh user. */
|
|
static void opServe(Strings opFlags, Strings opArgs)
|
|
{
|
|
bool writeAllowed = false;
|
|
foreach (Strings::iterator, i, opFlags)
|
|
if (*i == "--write") writeAllowed = true;
|
|
else throw UsageError(format("unknown flag `%1%'") % *i);
|
|
|
|
if (!opArgs.empty()) throw UsageError("no arguments expected");
|
|
|
|
FdSource in(STDIN_FILENO);
|
|
FdSink out(STDOUT_FILENO);
|
|
|
|
/* Exchange the greeting. */
|
|
unsigned int magic = readInt(in);
|
|
if (magic != SERVE_MAGIC_1) throw Error("protocol mismatch");
|
|
writeInt(SERVE_MAGIC_2, out);
|
|
writeInt(SERVE_PROTOCOL_VERSION, out);
|
|
out.flush();
|
|
readInt(in); // Client version, unused for now
|
|
|
|
while (true) {
|
|
ServeCommand cmd;
|
|
try {
|
|
cmd = (ServeCommand) readInt(in);
|
|
} catch (EndOfFile & e) {
|
|
break;
|
|
}
|
|
|
|
switch (cmd) {
|
|
|
|
case cmdQueryValidPaths: {
|
|
bool lock = readInt(in);
|
|
bool substitute = readInt(in);
|
|
PathSet paths = readStorePaths<PathSet>(in);
|
|
if (lock && writeAllowed)
|
|
for (auto & path : paths)
|
|
store->addTempRoot(path);
|
|
|
|
/* If requested, substitute missing paths. This
|
|
implements nix-copy-closure's --use-substitutes
|
|
flag. */
|
|
if (substitute && writeAllowed) {
|
|
/* Filter out .drv files (we don't want to build anything). */
|
|
PathSet paths2;
|
|
for (auto & path : paths)
|
|
if (!isDerivation(path)) paths2.insert(path);
|
|
unsigned long long downloadSize, narSize;
|
|
PathSet willBuild, willSubstitute, unknown;
|
|
queryMissing(*store, PathSet(paths2.begin(), paths2.end()),
|
|
willBuild, willSubstitute, unknown, downloadSize, narSize);
|
|
/* FIXME: should use ensurePath(), but it only
|
|
does one path at a time. */
|
|
if (!willSubstitute.empty())
|
|
try {
|
|
store->buildPaths(willSubstitute);
|
|
} catch (Error & e) {
|
|
printMsg(lvlError, format("warning: %1%") % e.msg());
|
|
}
|
|
}
|
|
|
|
writeStrings(store->queryValidPaths(paths), out);
|
|
break;
|
|
}
|
|
|
|
case cmdQueryPathInfos: {
|
|
PathSet paths = readStorePaths<PathSet>(in);
|
|
// !!! Maybe we want a queryPathInfos?
|
|
foreach (PathSet::iterator, i, paths) {
|
|
if (!store->isValidPath(*i))
|
|
continue;
|
|
ValidPathInfo info = store->queryPathInfo(*i);
|
|
writeString(info.path, out);
|
|
writeString(info.deriver, out);
|
|
writeStrings(info.references, out);
|
|
// !!! Maybe we want compression?
|
|
writeLongLong(info.narSize, out); // downloadSize
|
|
writeLongLong(info.narSize, out);
|
|
}
|
|
writeString("", out);
|
|
break;
|
|
}
|
|
|
|
case cmdDumpStorePath:
|
|
dumpPath(readStorePath(in), out);
|
|
break;
|
|
|
|
case cmdImportPaths: {
|
|
if (!writeAllowed) throw Error("importing paths is not allowed");
|
|
string compression = readString(in);
|
|
|
|
if (compression != "") {
|
|
if (compression != "gzip" && compression != "bzip2" && compression != "xz")
|
|
throw Error(format("unsupported compression method `%1%'") % compression);
|
|
|
|
Pipe fromDecompressor;
|
|
fromDecompressor.create();
|
|
|
|
Pid pid = startProcess([&]() {
|
|
fromDecompressor.readSide.close();
|
|
if (dup2(fromDecompressor.writeSide, STDOUT_FILENO) == -1)
|
|
throw SysError("dupping stdout");
|
|
// FIXME: use absolute path.
|
|
execlp(compression.c_str(), compression.c_str(), "-d", NULL);
|
|
throw SysError(format("executing `%1%'") % compression);
|
|
});
|
|
|
|
fromDecompressor.writeSide.close();
|
|
|
|
FdSource fromDecompressor_(fromDecompressor.readSide);
|
|
store->importPaths(false, fromDecompressor_);
|
|
|
|
pid.wait(true);
|
|
} else
|
|
store->importPaths(false, in);
|
|
|
|
writeInt(1, out); // indicate success
|
|
|
|
/* The decompressor will have left stdin in an
|
|
undefined state, so we can't continue. */
|
|
if (compression != "") return;
|
|
|
|
break;
|
|
}
|
|
|
|
case cmdExportPaths: {
|
|
exportPaths(*store, readStorePaths<Paths>(in), false, out);
|
|
break;
|
|
}
|
|
|
|
case cmdBuildPaths: {
|
|
/* Used by build-remote.pl. */
|
|
if (!writeAllowed) throw Error("building paths is not allowed");
|
|
PathSet paths = readStorePaths<PathSet>(in);
|
|
|
|
// FIXME: changing options here doesn't work if we're
|
|
// building through the daemon.
|
|
verbosity = lvlError;
|
|
settings.keepLog = false;
|
|
settings.useSubstitutes = false;
|
|
settings.maxSilentTime = readInt(in);
|
|
settings.buildTimeout = readInt(in);
|
|
|
|
int res = 0;
|
|
try {
|
|
store->buildPaths(paths);
|
|
} catch (Error & e) {
|
|
printMsg(lvlError, format("error: %1%") % e.msg());
|
|
res = e.status;
|
|
}
|
|
writeInt(res, out);
|
|
break;
|
|
}
|
|
|
|
default:
|
|
throw Error(format("unknown serve command %1%") % cmd);
|
|
}
|
|
|
|
out.flush();
|
|
}
|
|
}
|
|
|
|
|
|
/* Scan the arguments; find the operation, set global flags, put all
|
|
other flags in a list, and put all other arguments in another
|
|
list. */
|
|
void run(Strings args)
|
|
{
|
|
Strings opFlags, opArgs;
|
|
Operation op = 0;
|
|
|
|
for (Strings::iterator i = args.begin(); i != args.end(); ) {
|
|
string arg = *i++;
|
|
|
|
Operation oldOp = op;
|
|
|
|
if (arg == "--realise" || arg == "--realize" || arg == "-r")
|
|
op = opRealise;
|
|
else if (arg == "--add" || arg == "-A")
|
|
op = opAdd;
|
|
else if (arg == "--add-fixed")
|
|
op = opAddFixed;
|
|
else if (arg == "--print-fixed-path")
|
|
op = opPrintFixedPath;
|
|
else if (arg == "--delete")
|
|
op = opDelete;
|
|
else if (arg == "--query" || arg == "-q")
|
|
op = opQuery;
|
|
else if (arg == "--print-env")
|
|
op = opPrintEnv;
|
|
else if (arg == "--read-log" || arg == "-l")
|
|
op = opReadLog;
|
|
else if (arg == "--dump-db")
|
|
op = opDumpDB;
|
|
else if (arg == "--load-db")
|
|
op = opLoadDB;
|
|
else if (arg == "--register-validity")
|
|
op = opRegisterValidity;
|
|
else if (arg == "--check-validity")
|
|
op = opCheckValidity;
|
|
else if (arg == "--gc")
|
|
op = opGC;
|
|
else if (arg == "--dump")
|
|
op = opDump;
|
|
else if (arg == "--restore")
|
|
op = opRestore;
|
|
else if (arg == "--export")
|
|
op = opExport;
|
|
else if (arg == "--import")
|
|
op = opImport;
|
|
else if (arg == "--init")
|
|
op = opInit;
|
|
else if (arg == "--verify")
|
|
op = opVerify;
|
|
else if (arg == "--verify-path")
|
|
op = opVerifyPath;
|
|
else if (arg == "--repair-path")
|
|
op = opRepairPath;
|
|
else if (arg == "--optimise" || arg == "--optimize")
|
|
op = opOptimise;
|
|
else if (arg == "--query-failed-paths")
|
|
op = opQueryFailedPaths;
|
|
else if (arg == "--clear-failed-paths")
|
|
op = opClearFailedPaths;
|
|
else if (arg == "--add-root") {
|
|
if (i == args.end())
|
|
throw UsageError("`--add-root requires an argument");
|
|
gcRoot = absPath(*i++);
|
|
}
|
|
else if (arg == "--indirect")
|
|
indirectRoot = true;
|
|
else if (arg == "--no-output")
|
|
noOutput = true;
|
|
else if (arg == "--serve")
|
|
op = opServe;
|
|
else if (arg[0] == '-') {
|
|
opFlags.push_back(arg);
|
|
if (arg == "--max-freed" || arg == "--max-links" || arg == "--max-atime") { /* !!! hack */
|
|
if (i != args.end()) opFlags.push_back(*i++);
|
|
}
|
|
}
|
|
else
|
|
opArgs.push_back(arg);
|
|
|
|
if (oldOp && oldOp != op)
|
|
throw UsageError("only one operation may be specified");
|
|
}
|
|
|
|
if (!op) throw UsageError("no operation specified");
|
|
|
|
if (op != opDump && op != opRestore) /* !!! hack */
|
|
store = openStore(op != opGC);
|
|
|
|
op(opFlags, opArgs);
|
|
}
|
|
|
|
|
|
string programId = "nix-store";
|