diff options
Diffstat (limited to 'nix')
| -rw-r--r-- | nix/libstore/local-store.cc | 159 | ||||
| -rw-r--r-- | nix/libstore/local-store.hh | 7 |
2 files changed, 5 insertions, 161 deletions
diff --git a/nix/libstore/local-store.cc b/nix/libstore/local-store.cc index 882bce1f40..4c55c6ea0d 100644 --- a/nix/libstore/local-store.cc +++ b/nix/libstore/local-store.cc @@ -171,27 +171,10 @@ LocalStore::LocalStore(bool reserveSpace) } else if (curSchema < nixSchemaVersion) { - if (curSchema < 5) - throw Error( - "Your Nix store has a database in Berkeley DB format,\n" - "which is no longer supported. To convert to the new format,\n" - "please upgrade Nix to version 0.12 first."); - - if (!lockFile(globalLock, ltWrite, false)) { - printMsg(lvlError, "waiting for exclusive access to the Nix store..."); - lockFile(globalLock, ltWrite, true); - } - - /* Get the schema version again, because another process may - have performed the upgrade already. */ - curSchema = getSchema(); - - if (curSchema < 6) upgradeStore6(); - else if (curSchema < 7) { upgradeStore7(); openDB(true); } - - writeFile(schemaPath, (format("%1%") % nixSchemaVersion).str()); - - lockFile(globalLock, ltRead, true); + /* Guix always used version 7 of the schema. */ + throw Error( + format("Your store database uses an implausibly old schema, version %1%.") + % curSchema); } else openDB(false); @@ -1633,140 +1616,6 @@ void LocalStore::markContentsGood(const Path & path) } -/* Functions for upgrading from the pre-SQLite database. */ - -PathSet LocalStore::queryValidPathsOld() -{ - PathSet paths; - for (auto & i : readDirectory(settings.nixDBPath + "/info")) - if (i.name.at(0) != '.') paths.insert(settings.nixStore + "/" + i.name); - return paths; -} - - -ValidPathInfo LocalStore::queryPathInfoOld(const Path & path) -{ - ValidPathInfo res; - res.path = path; - - /* Read the info file. */ - string baseName = baseNameOf(path); - Path infoFile = (format("%1%/info/%2%") % settings.nixDBPath % baseName).str(); - if (!pathExists(infoFile)) - throw Error(format("path `%1%' is not valid") % path); - string info = readFile(infoFile); - - /* Parse it. */ - Strings lines = tokenizeString<Strings>(info, "\n"); - - foreach (Strings::iterator, i, lines) { - string::size_type p = i->find(':'); - if (p == string::npos) - throw Error(format("corrupt line in `%1%': %2%") % infoFile % *i); - string name(*i, 0, p); - string value(*i, p + 2); - if (name == "References") { - Strings refs = tokenizeString<Strings>(value, " "); - res.references = PathSet(refs.begin(), refs.end()); - } else if (name == "Deriver") { - res.deriver = value; - } else if (name == "Hash") { - res.hash = parseHashField(path, value); - } else if (name == "Registered-At") { - int n = 0; - string2Int(value, n); - res.registrationTime = n; - } - } - - return res; -} - - -/* Upgrade from schema 5 (Nix 0.12) to schema 6 (Nix >= 0.15). */ -void LocalStore::upgradeStore6() -{ - printMsg(lvlError, "upgrading Nix store to new schema (this may take a while)..."); - - openDB(true); - - PathSet validPaths = queryValidPathsOld(); - - SQLiteTxn txn(db); - - foreach (PathSet::iterator, i, validPaths) { - addValidPath(queryPathInfoOld(*i), false); - std::cerr << "."; - } - - std::cerr << "|"; - - foreach (PathSet::iterator, i, validPaths) { - ValidPathInfo info = queryPathInfoOld(*i); - unsigned long long referrer = queryValidPathId(*i); - foreach (PathSet::iterator, j, info.references) - addReference(referrer, queryValidPathId(*j)); - std::cerr << "."; - } - - std::cerr << "\n"; - - txn.commit(); -} - - -#if defined(FS_IOC_SETFLAGS) && defined(FS_IOC_GETFLAGS) && defined(FS_IMMUTABLE_FL) - -static void makeMutable(const Path & path) -{ - checkInterrupt(); - - struct stat st = lstat(path); - - if (!S_ISDIR(st.st_mode) && !S_ISREG(st.st_mode)) return; - - if (S_ISDIR(st.st_mode)) { - for (auto & i : readDirectory(path)) - makeMutable(path + "/" + i.name); - } - - /* The O_NOFOLLOW is important to prevent us from changing the - mutable bit on the target of a symlink (which would be a - security hole). */ - AutoCloseFD fd = open(path.c_str(), O_RDONLY | O_NOFOLLOW); - if (fd == -1) { - if (errno == ELOOP) return; // it's a symlink - throw SysError(format("opening file `%1%'") % path); - } - - unsigned int flags = 0, old; - - /* Silently ignore errors getting/setting the immutable flag so - that we work correctly on filesystems that don't support it. */ - if (ioctl(fd, FS_IOC_GETFLAGS, &flags)) return; - old = flags; - flags &= ~FS_IMMUTABLE_FL; - if (old == flags) return; - if (ioctl(fd, FS_IOC_SETFLAGS, &flags)) return; -} - -/* Upgrade from schema 6 (Nix 0.15) to schema 7 (Nix >= 1.3). */ -void LocalStore::upgradeStore7() -{ - if (getuid() != 0) return; - printMsg(lvlError, "removing immutable bits from the Nix store (this may take a while)..."); - makeMutable(settings.nixStore); -} - -#else - -void LocalStore::upgradeStore7() -{ -} - -#endif - - void LocalStore::vacuumDB() { if (sqlite3_exec(db, "vacuum;", 0, 0, 0) != SQLITE_OK) diff --git a/nix/libstore/local-store.hh b/nix/libstore/local-store.hh index 6110468498..4e6b4cfc1d 100644 --- a/nix/libstore/local-store.hh +++ b/nix/libstore/local-store.hh @@ -15,7 +15,7 @@ namespace nix { /* Nix store and database schema version. Version 1 (or 0) was Nix <= 0.7. Version 2 was Nix 0.8 and 0.9. Version 3 is Nix 0.10. Version 4 is Nix 0.11. Version 5 is Nix 0.12-0.16. Version 6 is - Nix 1.0. Version 7 is Nix 1.3. */ + Nix 1.0. Version 7 is Nix 1.3. Guix has always used version 7. */ const int nixSchemaVersion = 7; @@ -244,11 +244,6 @@ private: void updatePathInfo(const ValidPathInfo & info); - void upgradeStore6(); - void upgradeStore7(); - PathSet queryValidPathsOld(); - ValidPathInfo queryPathInfoOld(const Path & path); - struct GCState; void deleteGarbage(GCState & state, const Path & path); |