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Allow setting the state directory as a store parameter

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E.g. "local?store=/tmp/store&state=/tmp/var".
This commit is contained in:
Eelco Dolstra 2016-06-02 13:33:49 +02:00
parent f2682e6e18
commit 812c0dfbe2
13 changed files with 112 additions and 77 deletions
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34
src/libstore/gc.cc
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@ -29,7 +29,7 @@ static string gcRootsDir = "gcroots";
int LocalStore::openGCLock(LockType lockType)
{
Path fnGCLock = (format("%1%/%2%")
% settings.nixStateDir % gcLockName).str();
% stateDir % gcLockName).str();
debug(format("acquiring global GC lock ‘%1%’") % fnGCLock);
@ -78,12 +78,12 @@ void LocalStore::addIndirectRoot(const Path & path)
{
string hash = printHash32(hashString(htSHA1, path));
Path realRoot = canonPath((format("%1%/%2%/auto/%3%")
% settings.nixStateDir % gcRootsDir % hash).str());
% stateDir % gcRootsDir % hash).str());
makeSymlink(realRoot, path);
}
Path Store::addPermRoot(const Path & _storePath,
Path LocalFSStore::addPermRoot(const Path & _storePath,
const Path & _gcRoot, bool indirect, bool allowOutsideRootsDir)
{
Path storePath(canonPath(_storePath));
@ -106,7 +106,7 @@ Path Store::addPermRoot(const Path & _storePath,
else {
if (!allowOutsideRootsDir) {
Path rootsDir = canonPath((format("%1%/%2%") % settings.nixStateDir % gcRootsDir).str());
Path rootsDir = canonPath((format("%1%/%2%") % stateDir % gcRootsDir).str());
if (string(gcRoot, 0, rootsDir.size() + 1) != rootsDir + "/")
throw Error(format(
@ -153,7 +153,7 @@ void LocalStore::addTempRoot(const Path & path)
if (state->fdTempRoots == -1) {
while (1) {
Path dir = (format("%1%/%2%") % settings.nixStateDir % tempRootsDir).str();
Path dir = (format("%1%/%2%") % stateDir % tempRootsDir).str();
createDirs(dir);
state->fnTempRoots = (format("%1%/%2%") % dir % getpid()).str();
@ -200,19 +200,15 @@ void LocalStore::addTempRoot(const Path & path)
}
typedef std::shared_ptr<AutoCloseFD> FDPtr;
typedef list<FDPtr> FDs;
static void readTempRoots(Store & store, PathSet & tempRoots, FDs & fds)
void LocalStore::readTempRoots(PathSet & tempRoots, FDs & fds)
{
/* Read the `temproots' directory for per-process temporary root
files. */
DirEntries tempRootFiles = readDirectory(
(format("%1%/%2%") % settings.nixStateDir % tempRootsDir).str());
(format("%1%/%2%") % stateDir % tempRootsDir).str());
for (auto & i : tempRootFiles) {
Path path = (format("%1%/%2%/%3%") % settings.nixStateDir % tempRootsDir % i.name).str();
Path path = (format("%1%/%2%/%3%") % stateDir % tempRootsDir % i.name).str();
debug(format("reading temporary root file ‘%1%’") % path);
FDPtr fd(new AutoCloseFD(open(path.c_str(), O_RDWR, 0666)));
@ -251,7 +247,7 @@ static void readTempRoots(Store & store, PathSet & tempRoots, FDs & fds)
while ((end = contents.find((char) 0, pos)) != string::npos) {
Path root(contents, pos, end - pos);
debug(format("got temporary root ‘%1%’") % root);
store.assertStorePath(root);
assertStorePath(root);
tempRoots.insert(root);
pos = end + 1;
}
@ -290,7 +286,7 @@ void LocalStore::findRoots(const Path & path, unsigned char type, Roots & roots)
else {
target = absPath(target, dirOf(path));
if (!pathExists(target)) {
if (isInDir(path, settings.nixStateDir + "/" + gcRootsDir + "/auto")) {
if (isInDir(path, stateDir + "/" + gcRootsDir + "/auto")) {
printMsg(lvlInfo, format("removing stale link from ‘%1%’ to ‘%2%’") % path % target);
unlink(path.c_str());
}
@ -326,10 +322,10 @@ Roots LocalStore::findRoots()
Roots roots;
/* Process direct roots in {gcroots,manifests,profiles}. */
findRoots(settings.nixStateDir + "/" + gcRootsDir, DT_UNKNOWN, roots);
if (pathExists(settings.nixStateDir + "/manifests"))
findRoots(settings.nixStateDir + "/manifests", DT_UNKNOWN, roots);
findRoots(settings.nixStateDir + "/profiles", DT_UNKNOWN, roots);
findRoots(stateDir + "/" + gcRootsDir, DT_UNKNOWN, roots);
if (pathExists(stateDir + "/manifests"))
findRoots(stateDir + "/manifests", DT_UNKNOWN, roots);
findRoots(stateDir + "/profiles", DT_UNKNOWN, roots);
return roots;
}
@ -635,7 +631,7 @@ void LocalStore::collectGarbage(const GCOptions & options, GCResults & results)
per-process temporary root files. So after this point no paths
can be added to the set of temporary roots. */
FDs fds;
readTempRoots(*this, state.tempRoots, fds);
readTempRoots(state.tempRoots, fds);
state.roots.insert(state.tempRoots.begin(), state.tempRoots.end());
/* After this point the set of roots or temporary roots cannot