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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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27
src/libstore/local-store.cc
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@ -38,9 +38,10 @@ namespace nix {
LocalStore::LocalStore(const Params & params)
: LocalFSStore(params)
, dbDir(get(params, "state", "") != "" ? get(params, "state", "") + "/db" : settings.nixDBPath)
, linksDir(storeDir + "/.links")
, reservedPath(settings.nixDBPath + "/reserved")
, schemaPath(settings.nixDBPath + "/schema")
, reservedPath(dbDir + "/reserved")
, schemaPath(dbDir + "/schema")
, requireSigs(settings.get("signed-binary-caches", std::string("")) != "") // FIXME: rename option
, publicKeys(getDefaultPublicKeys())
{
@ -55,11 +56,11 @@ LocalStore::LocalStore(const Params & params)
createDirs(storeDir);
makeStoreWritable();
createDirs(linksDir);
Path profilesDir = settings.nixStateDir + "/profiles";
Path profilesDir = stateDir + "/profiles";
createDirs(profilesDir);
createDirs(settings.nixStateDir + "/temproots");
createDirs(settings.nixDBPath);
Path gcRootsDir = settings.nixStateDir + "/gcroots";
createDirs(stateDir + "/temproots");
createDirs(dbDir);
Path gcRootsDir = stateDir + "/gcroots";
if (!pathExists(gcRootsDir)) {
createDirs(gcRootsDir);
createSymlink(profilesDir, gcRootsDir + "/profiles");
@ -135,7 +136,7 @@ LocalStore::LocalStore(const Params & params)
/* Acquire the big fat lock in shared mode to make sure that no
schema upgrade is in progress. */
try {
Path globalLockPath = settings.nixDBPath + "/big-lock";
Path globalLockPath = dbDir + "/big-lock";
globalLock = openLockFile(globalLockPath.c_str(), true);
} catch (SysError & e) {
if (e.errNo != EACCES) throw;
@ -246,19 +247,13 @@ int LocalStore::getSchema()
}
bool LocalStore::haveWriteAccess()
{
return access(settings.nixDBPath.c_str(), R_OK | W_OK) == 0;
}
void LocalStore::openDB(State & state, bool create)
{
if (!haveWriteAccess())
throw SysError(format("Nix database directory ‘%1%’ is not writable") % settings.nixDBPath);
if (access(dbDir.c_str(), R_OK | W_OK))
throw SysError(format("Nix database directory ‘%1%’ is not writable") % dbDir);
/* Open the Nix database. */
string dbPath = settings.nixDBPath + "/db.sqlite";
string dbPath = dbDir + "/db.sqlite";
auto & db(state.db);
if (sqlite3_open_v2(dbPath.c_str(), &db.db,
SQLITE_OPEN_READWRITE | (create ? SQLITE_OPEN_CREATE : 0), 0) != SQLITE_OK)