* Merge addToStore and addToStoreFixed.

* addToStore now adds unconditionally, it doesn't use readOnlyMode.
  Read-only operation is up to the caller (who can call
  computeStorePathForPath).

src/libstore/local-store.cc

@@ -619,20 +619,20 @@ static void invalidatePath(Transaction & txn, const Path & path)
 }
 
 
-Path LocalStore::_addToStore(bool fixed, bool recursive,
-    string hashAlgo, const Path & _srcPath)
+Path LocalStore::addToStore(const Path & _srcPath, bool fixed,
+    bool recursive, string hashAlgo)
 {
     Path srcPath(absPath(_srcPath));
     debug(format("adding `%1%' to the store") % srcPath);
 
     std::pair<Path, Hash> pr =
-        computeStorePathForPath(fixed, recursive, hashAlgo, srcPath);
+        computeStorePathForPath(srcPath, fixed, recursive, hashAlgo);
     Path & dstPath(pr.first);
     Hash & h(pr.second);
 
-    if (!readOnlyMode) addTempRoot(dstPath);
+    addTempRoot(dstPath);
 
-    if (!readOnlyMode && !isValidPath(dstPath)) {
+    if (!isValidPath(dstPath)) {
 
         /* The first check above is an optimisation to prevent
            unnecessary lock acquisition. */
@@ -664,26 +664,14 @@ Path LocalStore::_addToStore(bool fixed, bool recursive,
 }
 
 
-Path LocalStore::addToStore(const Path & srcPath)
-{
-    return _addToStore(false, false, "", srcPath);
-}
-
-
-Path LocalStore::addToStoreFixed(bool recursive, string hashAlgo, const Path & srcPath)
-{
-    return _addToStore(true, recursive, hashAlgo, srcPath);
-}
-
-
 Path LocalStore::addTextToStore(const string & suffix, const string & s,
     const PathSet & references)
 {
     Path dstPath = computeStorePathForText(suffix, s);
     
-    if (!readOnlyMode) addTempRoot(dstPath);
+    addTempRoot(dstPath);
 
-    if (!readOnlyMode && !isValidPath(dstPath)) {
+    if (!isValidPath(dstPath)) {
 
         PathLocks outputLock(singleton<PathSet, Path>(dstPath));
 

src/libstore/local-store.hh

@@ -45,27 +45,19 @@ public:
 
     Hash queryPathHash(const Path & path);
 
-    void queryReferences(const Path & storePath,
-        PathSet & references);
+    void queryReferences(const Path & path, PathSet & references);
 
-    void queryReferrers(const Path & storePath,
-        PathSet & referrers);
+    void queryReferrers(const Path & path, PathSet & referrers);
 
-    Path addToStore(const Path & srcPath);
-
-    Path addToStoreFixed(bool recursive, string hashAlgo,
-        const Path & srcPath);
+    Path addToStore(const Path & srcPath, bool fixed = false,
+        bool recursive = false, string hashAlgo = "");
 
     Path addTextToStore(const string & suffix, const string & s,
         const PathSet & references);
 
     void buildDerivations(const PathSet & drvPaths);
 
-    void ensurePath(const Path & storePath);
-
-private:
-    Path _addToStore(bool fixed, bool recursive,
-        string hashAlgo, const Path & _srcPath);
+    void ensurePath(const Path & path);
 };
 
 
@@ -120,16 +112,16 @@ bool isValidPathTxn(const Transaction & txn, const Path & path);
 
 /* Sets the set of outgoing FS references for a store path.  Use with
    care! */
-void setReferences(const Transaction & txn, const Path & storePath,
+void setReferences(const Transaction & txn, const Path & path,
     const PathSet & references);
 
 /* Sets the deriver of a store path.  Use with care! */
-void setDeriver(const Transaction & txn, const Path & storePath,
+void setDeriver(const Transaction & txn, const Path & path,
     const Path & deriver);
 
 /* Query the deriver of a store path.  Return the empty string if no
    deriver has been set. */
-Path queryDeriver(const Transaction & txn, const Path & storePath);
+Path queryDeriver(const Transaction & txn, const Path & path);
 
 /* Delete a value from the nixStore directory. */
 void deleteFromStore(const Path & path, unsigned long long & bytesFreed);

src/libstore/remote-store.cc

@@ -3,7 +3,6 @@
 #include "remote-store.hh"
 #include "worker-protocol.hh"
 #include "archive.hh"
-#include "globals.hh"
 
 #include <iostream>
 #include <unistd.h>
@@ -123,33 +122,14 @@ void RemoteStore::queryReferrers(const Path & path,
 }
 
 
-Path RemoteStore::addToStore(const Path & srcPath)
+Path RemoteStore::addToStore(const Path & _srcPath, bool fixed,
+    bool recursive, string hashAlgo)
 {
-    if (readOnlyMode) {
-        /* No sense in making a round trip, we can just compute the
-           path here. */
-        return computeStorePathForPath(false, false, "", srcPath).first;
-    }
+    Path srcPath(absPath(_srcPath));
     
     writeInt(wopAddToStore, to);
     writeString(baseNameOf(srcPath), to);
-    dumpPath(srcPath, to);
-    Path path = readString(from);
-    return path;
-}
-
-
-Path RemoteStore::addToStoreFixed(bool recursive, string hashAlgo,
-    const Path & srcPath)
-{
-    if (readOnlyMode) {
-        /* No sense in making a round trip, we can just compute the
-           path here. */
-        return computeStorePathForPath(true, recursive, hashAlgo, srcPath).first;
-    }
-    
-    writeInt(wopAddToStoreFixed, to);
-    writeString(baseNameOf(srcPath), to);
+    writeInt(fixed ? 1 : 0, to);
     writeInt(recursive ? 1 : 0, to);
     writeString(hashAlgo, to);
     dumpPath(srcPath, to);
@@ -161,10 +141,6 @@ Path RemoteStore::addToStoreFixed(bool recursive, string hashAlgo,
 Path RemoteStore::addTextToStore(const string & suffix, const string & s,
     const PathSet & references)
 {
-    if (readOnlyMode) {
-        return computeStorePathForText(suffix, s);
-    }
-    
     writeInt(wopAddTextToStore, to);
     writeString(suffix, to);
     writeString(s, to);

src/libstore/remote-store.hh

@@ -37,10 +37,8 @@ public:
 
     void queryReferrers(const Path & path, PathSet & referrers);
 
-    Path addToStore(const Path & srcPath);
-
-    Path addToStoreFixed(bool recursive, string hashAlgo,
-        const Path & srcPath);
+    Path addToStore(const Path & srcPath, bool fixed = false,
+        bool recursive = false, string hashAlgo = "");
 
     Path addTextToStore(const string & suffix, const string & s,
         const PathSet & references);

src/libstore/store-api.cc

@@ -93,8 +93,8 @@ Path makeFixedOutputPath(bool recursive,
 }
 
 
-std::pair<Path, Hash> computeStorePathForPath(bool fixed, bool recursive,
-    string hashAlgo, const Path & srcPath)
+std::pair<Path, Hash> computeStorePathForPath(const Path & srcPath,
+    bool fixed, bool recursive, string hashAlgo)
 {
     Hash h(htSHA256);
     {

src/libstore/store-api.hh

@@ -63,14 +63,11 @@ public:
         PathSet & referrers) = 0;
 
     /* Copy the contents of a path to the store and register the
-       validity the resulting path.  The resulting path is
-       returned. */
-    virtual Path addToStore(const Path & srcPath) = 0;
-
-    /* Like addToStore(), but for pre-adding the outputs of
-       fixed-output derivations. */
-    virtual Path addToStoreFixed(bool recursive, string hashAlgo,
-        const Path & srcPath) = 0;
+       validity the resulting path.  The resulting path is returned.
+       If `fixed' is true, then the output of a fixed-output
+       derivation is pre-loaded into the Nix store. */
+    virtual Path addToStore(const Path & srcPath, bool fixed = false,
+        bool recursive = false, string hashAlgo = "") = 0;
 
     /* Like addToStore, but the contents written to the output path is
        a regular file containing the given string. */
@@ -119,8 +116,8 @@ Path makeFixedOutputPath(bool recursive,
    it computes the store path to which srcPath is to be copied.
    Returns the store path and the cryptographic hash of the
    contents of srcPath. */
-std::pair<Path, Hash> computeStorePathForPath(bool fixed, bool recursive,
-    string hashAlgo, const Path & srcPath);
+std::pair<Path, Hash> computeStorePathForPath(const Path & srcPath,
+    bool fixed = false, bool recursive = false, string hashAlgo = "");
 
 /* Preparatory part of addTextToStore().
 

src/libstore/worker-protocol.hh

@@ -15,7 +15,6 @@ typedef enum {
     wopQueryReferences,
     wopQueryReferrers,
     wopAddToStore,
-    wopAddToStoreFixed,
     wopAddTextToStore,
     wopBuildDerivations,
     wopEnsurePath,