Merge pull request #1 from shlevy/sandbox-profiles

Use AutoDelete for sandbox profile file

src/libstore/build.cc

@@ -778,9 +778,13 @@ private:
     DirsInChroot dirsInChroot;
     typedef map<string, string> Environment;
     Environment env;
+#if SANDBOX_ENABLED
     typedef string SandboxProfile;
     SandboxProfile additionalSandboxProfile;
 
+    AutoDelete autoDelSandbox;
+#endif
+
     /* Hash rewriting. */
     HashRewrites rewritesToTmp, rewritesFromTmp;
     typedef map<Path, Path> RedirectedOutputs;
@@ -2445,9 +2449,10 @@ void DerivationGoal::runChild()
         const char *builder = "invalid";
 
         string sandboxProfile;
-        if (isBuiltin(*drv))
+        if (isBuiltin(*drv)) {
             ;
-        else if (useChroot && SANDBOX_ENABLED) {
+#if SANDBOX_ENABLED
+        } else if (useChroot) {
             /* Lots and lots and lots of file functions freak out if they can't stat their full ancestry */
             PathSet ancestry;
 
@@ -2527,16 +2532,20 @@ void DerivationGoal::runChild()
             debug("Generated sandbox profile:");
             debug(sandboxProfile);
 
-            Path tmpProfile = createTempDir() + "/profile.sb";
+            Path sandboxFile = drvPath + ".sb";
-            writeFile(tmpProfile, sandboxProfile);
+            if (pathExists(sandboxFile)) deletePath(sandboxFile);
+            autoDelSandbox.reset(sandboxFile, false);
+
+            writeFile(sandboxFile, sandboxProfile);
 
             builder = "/usr/bin/sandbox-exec";
             args.push_back("sandbox-exec");
             args.push_back("-f");
-            args.push_back(tmpProfile);
+            args.push_back(sandboxFile);
             args.push_back("-D");
             args.push_back("_GLOBAL_TMP_DIR=" + globalTmpDir);
             args.push_back(drv->builder);
+#endif
         } else {
             builder = drv->builder.c_str();
             string builderBasename = baseNameOf(drv->builder);

src/libutil/util.cc

@@ -599,6 +599,8 @@ string drainFD(int fd)
 //////////////////////////////////////////////////////////////////////
 
 
+AutoDelete::AutoDelete() : del{false} {}
+
 AutoDelete::AutoDelete(const string & p, bool recursive) : path(p)
 {
     del = true;
@@ -626,6 +628,12 @@ void AutoDelete::cancel()
     del = false;
 }
 
+void AutoDelete::reset(const Path & p, bool recursive) {
+    path = p;
+    this->recursive = recursive;
+    del = true;
+}
+
 
 
 //////////////////////////////////////////////////////////////////////

src/libutil/util.hh

@@ -199,9 +199,11 @@ class AutoDelete
     bool del;
     bool recursive;
 public:
+    AutoDelete();
     AutoDelete(const Path & p, bool recursive = true);
     ~AutoDelete();
     void cancel();
+    void reset(const Path & p, bool recursive = true);
     operator Path() const { return path; }
 };