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* Updated `nix-store --verify' to the new schema.

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This commit is contained in:
Eelco Dolstra 2005-02-08 13:23:55 +00:00
parent 60feff82cf
commit 3d74274b37
6 changed files with 106 additions and 26 deletions
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4
src/libstore/build.cc
View file

@ -806,7 +806,7 @@ DerivationGoal::HookReply DerivationGoal::tryBuildHook()
{
s += *i;
PathSet references;
queryReferences(*i, references);
queryReferences(noTxn, *i, references);
for (PathSet::iterator j = references.begin();
j != references.end(); ++j)
{
@ -1326,7 +1326,7 @@ void SubstitutionGoal::init()
/* To maintain the closure invairant, we first have to realise the
paths referenced by this one. */
queryReferences(storePath, references);
queryReferences(noTxn, storePath, references);
for (PathSet::iterator i = references.begin();
i != references.end(); ++i)

2
src/libstore/gc.cc
View file

@ -279,7 +279,7 @@ static void dfsVisit(const PathSet & paths, const Path & path,
PathSet references;
if (isValidPath(path))
queryReferences(path, references);
queryReferences(noTxn, path, references);
for (PathSet::iterator i = references.begin();
i != references.end(); ++i)

4
src/libstore/misc.cc
View file

@ -19,9 +19,9 @@ void computeFSClosure(const Path & storePath,
PathSet references;
if (flipDirection)
queryReferers(storePath, references);
queryReferers(noTxn, storePath, references);
else
queryReferences(storePath, references);
queryReferences(noTxn, storePath, references);
for (PathSet::iterator i = references.begin();
i != references.end(); ++i)

112
src/libstore/store.cc
View file

@ -325,21 +325,23 @@ void setReferences(const Transaction & txn, const Path & storePath,
}
void queryReferences(const Path & storePath, PathSet & references)
void queryReferences(const Transaction & txn,
const Path & storePath, PathSet & references)
{
Paths references2;
if (!isRealisablePath(noTxn, storePath))
if (!isRealisablePath(txn, storePath))
throw Error(format("path `%1%' is not valid") % storePath);
nixDB.queryStrings(noTxn, dbReferences, storePath, references2);
nixDB.queryStrings(txn, dbReferences, storePath, references2);
references.insert(references2.begin(), references2.end());
}
void queryReferers(const Path & storePath, PathSet & referers)
void queryReferers(const Transaction & txn,
const Path & storePath, PathSet & referers)
{
if (!isRealisablePath(noTxn, storePath))
if (!isRealisablePath(txn, storePath))
throw Error(format("path `%1%' is not valid") % storePath);
PathSet referers2 = getReferers(noTxn, storePath);
PathSet referers2 = getReferers(txn, storePath);
referers.insert(referers2.begin(), referers2.end());
}
@ -358,7 +360,7 @@ void setDeriver(const Transaction & txn, const Path & storePath,
Path queryDeriver(const Transaction & txn, const Path & storePath)
{
if (!isRealisablePath(noTxn, storePath))
if (!isRealisablePath(txn, storePath))
throw Error(format("path `%1%' is not valid") % storePath);
Path deriver;
if (nixDB.queryString(txn, dbDerivers, storePath, deriver))
@ -641,13 +643,8 @@ void verifyStore()
validPaths.insert(path);
}
/* !!! the code below does not allow transitive substitutes.
I.e., if B is a substitute of A, then B must be a valid path.
B cannot itself be invalid but have a substitute. */
/* "Usable" paths are those that are valid or have a substitute.
These are the paths that are allowed to appear in the
right-hand side of a sute mapping. */
/* "Usable" paths are those that are valid or have a
substitute. */
PathSet usablePaths(validPaths);
/* Check that the values of the substitute mappings are valid
@ -656,10 +653,91 @@ void verifyStore()
nixDB.enumTable(txn, dbSubstitutes, subKeys);
for (Paths::iterator i = subKeys.begin(); i != subKeys.end(); ++i) {
Substitutes subs = readSubstitutes(txn, *i);
if (subs.size() > 0)
usablePaths.insert(*i);
else
if (!isStorePath(*i)) {
printMsg(lvlError, format("found substitutes for non-store path `%1%'") % *i);
nixDB.delPair(txn, dbSubstitutes, *i);
}
else if (subs.size() == 0)
nixDB.delPair(txn, dbSubstitutes, *i);
else
usablePaths.insert(*i);
}
/* Check the cleanup invariant: only usable paths can have
`references', `referers', or `derivers' entries. */
/* Check the `derivers' table. */
Paths deriversKeys;
nixDB.enumTable(txn, dbDerivers, deriversKeys);
for (Paths::iterator i = deriversKeys.begin();
i != deriversKeys.end(); ++i)
{
if (usablePaths.find(*i) == usablePaths.end()) {
printMsg(lvlError, format("found deriver entry for unusable path `%1%'")
% *i);
nixDB.delPair(txn, dbDerivers, *i);
}
else {
Path deriver = queryDeriver(txn, *i);
if (!isStorePath(deriver)) {
printMsg(lvlError, format("found corrupt deriver `%1%' for `%2%'")
% deriver % *i);
nixDB.delPair(txn, dbDerivers, *i);
}
}
}
/* Check the `references' table. */
Paths referencesKeys;
nixDB.enumTable(txn, dbReferences, referencesKeys);
for (Paths::iterator i = referencesKeys.begin();
i != referencesKeys.end(); ++i)
{
if (usablePaths.find(*i) == usablePaths.end()) {
printMsg(lvlError, format("found references entry for unusable path `%1%'")
% *i);
nixDB.delPair(txn, dbReferences, *i);
}
else {
PathSet references;
queryReferences(txn, *i, references);
for (PathSet::iterator j = references.begin();
j != references.end(); ++j)
{
PathSet referers = getReferers(txn, *j);
if (referers.find(*i) == referers.end()) {
printMsg(lvlError, format("missing referer mapping from `%1%' to `%2%'")
% *j % *i);
}
}
}
}
/* Check the `referers' table. */
Paths referersKeys;
nixDB.enumTable(txn, dbReferers, referersKeys);
for (Paths::iterator i = referersKeys.begin();
i != referersKeys.end(); ++i)
{
if (usablePaths.find(*i) == usablePaths.end()) {
printMsg(lvlError, format("found referers entry for unusable path `%1%'")
% *i);
nixDB.delPair(txn, dbReferers, *i);
}
else {
PathSet referers;
queryReferers(txn, *i, referers);
for (PathSet::iterator j = referers.begin();
j != referers.end(); ++j)
{
Paths references;
nixDB.queryStrings(txn, dbReferences, *j, references);
if (find(references.begin(), references.end(), *i) == references.end()) {
printMsg(lvlError, format("missing reference mapping from `%1%' to `%2%'")
% *j % *i);
}
}
}
}
txn.commit();

6
src/libstore/store.hh
View file

@ -90,11 +90,13 @@ void setReferences(const Transaction & txn, const Path & storePath,
/* Queries the set of outgoing FS references for a store path. The
result is not cleared. */
void queryReferences(const Path & storePath, PathSet & references);
void queryReferences(const Transaction & txn,
const Path & storePath, PathSet & references);
/* Queries the set of incoming FS references for a store path. The
result is not cleared. */
void queryReferers(const Path & storePath, PathSet & referers);
void queryReferers(const Transaction & txn,
const Path & storePath, PathSet & referers);
/* Sets the deriver of a store path. Use with care! */
void setDeriver(const Transaction & txn, const Path & storePath,

4
src/nix-store/main.cc
View file

@ -215,8 +215,8 @@ static void opQuery(Strings opFlags, Strings opArgs)
Path path = maybeUseOutput(*i, useOutput, forceRealise);
if (query == qRequisites)
storePathRequisites(path, includeOutputs, paths);
else if (query == qReferences) queryReferences(path, paths);
else if (query == qReferers) queryReferers(path, paths);
else if (query == qReferences) queryReferences(noTxn, path, paths);
else if (query == qReferers) queryReferers(noTxn, path, paths);
else if (query == qReferersClosure) computeFSClosure(path, paths, true);
}
printPathSet(paths);