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daemon: Remove unused schema upgrade code.

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* nix/libstore/local-store.cc (LocalStore): Remove upgrade code.
(LocalStore::queryValidPathsOld, LocalStore::queryPathInfoOld)
(LocalStore::upgradeStore6, makeMutable)
(LocalStore::upgardeStore7): Remove.
* nix/libstore/local-store.hh: Adjust accordingly.
This commit is contained in:
Ludovic Courtès 2018-03-29 17:05:45 +02:00 committed by Ludovic Courtès
parent c7589cce8d
commit 602a148650
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GPG key ID: 090B11993D9AEBB5
2 changed files with 5 additions and 161 deletions
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159
nix/libstore/local-store.cc
View file

@ -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)

7
nix/libstore/local-store.hh
View file

@ -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);