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* Implemented queryValidPaths() and verifyStore().

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This commit is contained in:
Eelco Dolstra 2010-02-18 16:51:27 +00:00
parent 836e5b6f57
commit 268f9aaf28
2 changed files with 35 additions and 119 deletions
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147
src/libstore/local-store.cc
View file

@ -56,6 +56,7 @@ void SQLiteStmt::create(sqlite3 * db, const string & s)
void SQLiteStmt::reset()
{
checkInterrupt();
assert(stmt);
if (sqlite3_reset(stmt) != SQLITE_OK)
throw SQLiteError(db, "resetting statement");
@ -337,6 +338,7 @@ void LocalStore::registerValidPath(const Path & path,
void LocalStore::registerValidPath(const ValidPathInfo & info, bool ignoreValidity)
{
abort();
#if 0
Path infoFile = infoFileFor(info.path);
@ -396,19 +398,13 @@ void LocalStore::registerValidPath(const ValidPathInfo & info, bool ignoreValidi
void LocalStore::registerFailedPath(const Path & path)
{
#if 0
/* Write an empty file in the .../failed directory to denote the
failure of the builder for `path'. */
writeFile(failedFileFor(path), "");
#endif
abort();
}
bool LocalStore::hasPathFailed(const Path & path)
{
#if 0
return pathExists(failedFileFor(path));
#endif
abort();
}
@ -467,7 +463,7 @@ ValidPathInfo LocalStore::queryPathInfo(const Path & path)
}
if (r != SQLITE_DONE)
throw Error(format("error getting references of `%1%'") % path);
throw SQLiteError(db, format("error getting references of `%1%'") % path);
return res;
}
@ -487,11 +483,22 @@ bool LocalStore::isValidPath(const Path & path)
PathSet LocalStore::queryValidPaths()
{
PathSet paths;
Strings entries = readDirectory(nixDBPath + "/info");
foreach (Strings::iterator, i, entries)
if (i->at(0) != '.') paths.insert(nixStore + "/" + *i);
return paths;
SQLiteStmt stmt;
stmt.create(db, "select path from ValidPaths");
PathSet res;
int r;
while ((r = sqlite3_step(stmt)) == SQLITE_ROW) {
const char * s = (const char *) sqlite3_column_text(stmt, 0);
assert(s);
res.insert(s);
}
if (r != SQLITE_DONE)
throw SQLiteError(db, "error getting valid paths");
return res;
}
@ -520,7 +527,7 @@ void LocalStore::queryReferrers(const Path & path, PathSet & referrers)
}
if (r != SQLITE_DONE)
throw Error(format("error getting references of `%1%'") % path);
throw SQLiteError(db, format("error getting references of `%1%'") % path);
}
@ -680,6 +687,7 @@ void LocalStore::registerValidPaths(const ValidPathInfos & infos)
there are no referrers. */
void LocalStore::invalidatePath(const Path & path)
{
abort();
#if 0
debug(format("invalidating path `%1%'") % path);
@ -1002,6 +1010,7 @@ Path LocalStore::importPath(bool requireSignature, Source & source)
void LocalStore::deleteFromStore(const Path & path, unsigned long long & bytesFreed,
unsigned long long & blocksFreed)
{
abort();
#if 0
bytesFreed = 0;
@ -1028,7 +1037,6 @@ void LocalStore::deleteFromStore(const Path & path, unsigned long long & bytesFr
void LocalStore::verifyStore(bool checkContents)
{
#if 0
/* Check whether all valid paths actually exist. */
printMsg(lvlInfo, "checking path existence");
@ -1036,68 +1044,26 @@ void LocalStore::verifyStore(bool checkContents)
foreach (PathSet::iterator, i, validPaths2) {
checkInterrupt();
/* !!! invalidatePath() will probably fail due to the foreign
key constraints on the Ref table. */
if (!isStorePath(*i)) {
printMsg(lvlError, format("path `%1%' is not in the Nix store") % *i);
invalidatePath(*i);
} else if (!pathExists(*i)) {
printMsg(lvlError, format("path `%1%' disappeared") % *i);
invalidatePath(*i);
} else {
Path infoFile = infoFileFor(*i);
struct stat st;
if (lstat(infoFile.c_str(), &st))
throw SysError(format("getting status of `%1%'") % infoFile);
if (st.st_size == 0) {
printMsg(lvlError, format("removing corrupt info file `%1%'") % infoFile);
if (unlink(infoFile.c_str()) == -1)
throw SysError(format("unlinking `%1%'") % infoFile);
}
else validPaths.insert(*i);
}
} else validPaths.insert(*i);
}
/* Check the store path meta-information. */
printMsg(lvlInfo, "checking path meta-information");
std::map<Path, PathSet> referrersCache;
/* Optionally, check the content hashes (slow). */
if (checkContents) {
printMsg(lvlInfo, "checking hashes");
foreach (PathSet::iterator, i, validPaths) {
bool update = false;
ValidPathInfo info = queryPathInfo(*i, true);
/* Check the references: each reference should be valid, and
it should have a matching referrer. */
foreach (PathSet::iterator, j, info.references) {
if (validPaths.find(*j) == validPaths.end()) {
printMsg(lvlError, format("incomplete closure: `%1%' needs missing `%2%'")
% *i % *j);
/* nothing we can do about it... */
} else {
if (referrersCache.find(*j) == referrersCache.end())
queryReferrers(*j, referrersCache[*j]);
if (referrersCache[*j].find(*i) == referrersCache[*j].end()) {
printMsg(lvlError, format("adding missing referrer mapping from `%1%' to `%2%'")
% *j % *i);
appendReferrer(*j, *i, true);
}
}
}
/* Check the deriver. (Note that the deriver doesn't have to
be a valid path.) */
if (!info.deriver.empty() && !isStorePath(info.deriver)) {
info.deriver = "";
update = true;
}
ValidPathInfo info = queryPathInfo(*i);
/* Check the content hash (optionally - slow). */
if (info.hash.hashSize == 0) {
printMsg(lvlError, format("re-hashing `%1%'") % *i);
info.hash = hashPath(htSHA256, *i);
update = true;
} else if (checkContents) {
debug(format("checking contents of `%1%'") % *i);
printMsg(lvlTalkative, format("checking contents of `%1%'") % *i);
Hash current = hashPath(info.hash.type, *i);
if (current != info.hash) {
printMsg(lvlError, format("path `%1%' was modified! "
@ -1105,56 +1071,7 @@ void LocalStore::verifyStore(bool checkContents)
% *i % printHash(info.hash) % printHash(current));
}
}
if (update) registerValidPath(info);
}
referrersCache.clear();
/* Check the referrers. */
printMsg(lvlInfo, "checking referrers");
std::map<Path, PathSet> referencesCache;
Strings entries = readDirectory(nixDBPath + "/referrer");
foreach (Strings::iterator, i, entries) {
Path from = nixStore + "/" + *i;
if (validPaths.find(from) == validPaths.end()) {
/* !!! This removes lock files as well. Need to check
whether that's okay. */
printMsg(lvlError, format("removing referrers file for invalid `%1%'") % from);
Path p = referrersFileFor(from);
if (unlink(p.c_str()) == -1)
throw SysError(format("unlinking `%1%'") % p);
continue;
}
PathSet referrers;
bool allValid = queryReferrersInternal(from, referrers);
bool update = false;
if (!allValid) {
printMsg(lvlError, format("removing some stale referrers for `%1%'") % from);
update = true;
}
/* Each referrer should have a matching reference. */
PathSet referrersNew;
foreach (PathSet::iterator, j, referrers) {
if (referencesCache.find(*j) == referencesCache.end())
queryReferences(*j, referencesCache[*j]);
if (referencesCache[*j].find(from) == referencesCache[*j].end()) {
printMsg(lvlError, format("removing unexpected referrer mapping from `%1%' to `%2%'")
% from % *j);
update = true;
} else referrersNew.insert(*j);
}
if (update) rewriteReferrers(from, false, referrersNew);
}
#endif
}

3
tests/init.sh
View file

@ -96,7 +96,6 @@ mv $NIX_BIN_DIR/nix/download-using-manifests.pl $NIX_BIN_DIR/nix/substituters/do
$nixstore --init
# Did anything happen?
test -e "$NIX_DB_DIR"/info
test -e "$NIX_DB_DIR"/referrer
test -e "$NIX_DB_DIR"/db.sqlite
echo 'Hello World' > ./dummy