Prevent config.h from being clobbered

9 files changed, 55 insertions, 112 deletions

diff --git a/src/libstore/build.cc b/src/libstore/build.cc
index 73223bc1a..75802c324 100644
--- a/src/libstore/build.cc
+++ b/src/libstore/build.cc
@@ -43,12 +43,6 @@
 #include <sched.h>
 #endif
 
-/* In GNU libc 2.11, <sys/mount.h> does not define `MS_PRIVATE', but
-   <linux/fs.h> does.  */
-#if !defined MS_PRIVATE && defined HAVE_LINUX_FS_H
-#include <linux/fs.h>
-#endif
-
 #define CHROOT_ENABLED HAVE_CHROOT && HAVE_UNSHARE && HAVE_SYS_MOUNT_H && defined(MS_BIND) && defined(MS_PRIVATE) && defined(CLONE_NEWNS)
 
 #if CHROOT_ENABLED
@@ -2287,7 +2281,7 @@ void DerivationGoal::computeClosure()
         }
 
         /* Get rid of all weird permissions. */
-        canonicalisePathMetaData(path, buildUser.enabled() ? buildUser.getUID() : -1);
+        canonicalisePathMetaData(path);
 
         /* For this output path, find the references to other paths
            contained in it.  Compute the SHA-256 NAR hash at the same
@@ -2349,15 +2343,13 @@ Path DerivationGoal::openLogFile()
 {
     if (!settings.keepLog) return "";
 
-    string baseName = baseNameOf(drvPath);
-
     /* Create a log file. */
-    Path dir = (format("%1%/%2%/%3%/") % settings.nixLogDir % drvsLogDir % string(baseName, 0, 2)).str();
+    Path dir = (format("%1%/%2%") % settings.nixLogDir % drvsLogDir).str();
     createDirs(dir);
 
     if (settings.compressLog) {
 
-        Path logFileName = (format("%1%/%2%.bz2") % dir % string(baseName, 2)).str();
+        Path logFileName = (format("%1%/%2%.bz2") % dir % baseNameOf(drvPath)).str();
         AutoCloseFD fd = open(logFileName.c_str(), O_CREAT | O_WRONLY | O_TRUNC, 0666);
         if (fd == -1) throw SysError(format("creating log file `%1%'") % logFileName);
         closeOnExec(fd);
@@ -2372,7 +2364,7 @@ Path DerivationGoal::openLogFile()
         return logFileName;
 
     } else {
-        Path logFileName = (format("%1%/%2%") % dir % string(baseName, 2)).str();
+        Path logFileName = (format("%1%/%2%") % dir % baseNameOf(drvPath)).str();
         fdLogFile = open(logFileName.c_str(), O_CREAT | O_WRONLY | O_TRUNC, 0666);
         if (fdLogFile == -1) throw SysError(format("creating log file `%1%'") % logFileName);
         closeOnExec(fdLogFile);
@@ -2839,7 +2831,7 @@ void SubstitutionGoal::finished()
         return;
     }
 
-    canonicalisePathMetaData(destPath, -1);
+    canonicalisePathMetaData(destPath);
 
     worker.store.optimisePath(destPath); // FIXME: combine with hashPath()
 
diff --git a/src/libstore/gc.cc b/src/libstore/gc.cc
index 113a7da15..a6b1a35e7 100644
--- a/src/libstore/gc.cc
+++ b/src/libstore/gc.cc
@@ -659,10 +659,7 @@ void LocalStore::collectGarbage(const GCOptions & options, GCResults & results)
        increase, since we hold locks on everything.  So everything
        that is not reachable from `roots'. */
 
-    if (state.shouldDelete) {
-        if (pathExists(state.trashDir)) deleteGarbage(state, state.trashDir);
-        createDirs(state.trashDir);
-    }
+    if (state.shouldDelete) createDirs(state.trashDir);
 
     /* Now either delete all garbage paths, or just the specified
        paths (for gcDeleteSpecific). */
diff --git a/src/libstore/globals.cc b/src/libstore/globals.cc
index b5a2a20be..596d4774c 100644
--- a/src/libstore/globals.cc
+++ b/src/libstore/globals.cc
@@ -10,14 +10,6 @@
 namespace nix {
 
 
-/* The default location of the daemon socket, relative to nixStateDir.
-   The socket is in a directory to allow you to control access to the
-   Nix daemon by setting the mode/ownership of the directory
-   appropriately.  (This wouldn't work on the socket itself since it
-   must be deleted and recreated on startup.) */
-#define DEFAULT_SOCKET_PATH "/daemon-socket/socket"
-
-
 Settings settings;
 
 
@@ -66,7 +58,6 @@ void Settings::processEnvironment()
     nixConfDir = canonPath(getEnv("NIX_CONF_DIR", NIX_CONF_DIR));
     nixLibexecDir = canonPath(getEnv("NIX_LIBEXEC_DIR", NIX_LIBEXEC_DIR));
     nixBinDir = canonPath(getEnv("NIX_BIN_DIR", NIX_BIN_DIR));
-    nixDaemonSocketFile = canonPath(nixStateDir + DEFAULT_SOCKET_PATH);
 
     string subs = getEnv("NIX_SUBSTITUTERS", "default");
     if (subs == "default") {
diff --git a/src/libstore/globals.hh b/src/libstore/globals.hh
index f129d9a11..be287698c 100644
--- a/src/libstore/globals.hh
+++ b/src/libstore/globals.hh
@@ -50,9 +50,6 @@ struct Settings {
     /* The directory where the main programs are stored. */
     Path nixBinDir;
 
-    /* File name of the socket the daemon listens to.  */
-    Path nixDaemonSocketFile;
-
     /* Whether to keep temporary directories of failed builds. */
     bool keepFailed;
 
diff --git a/src/libstore/local-store.cc b/src/libstore/local-store.cc
index 4b8203efe..333feb2a5 100644
--- a/src/libstore/local-store.cc
+++ b/src/libstore/local-store.cc
@@ -47,11 +47,7 @@ static void throwSQLiteError(sqlite3 * db, const format & f)
 {
     int err = sqlite3_errcode(db);
     if (err == SQLITE_BUSY) {
-        static bool warned = false;
-        if (!warned) {
-            printMsg(lvlError, "warning: SQLite database is busy");
-            warned = true;
-        }
+        printMsg(lvlError, "warning: SQLite database is busy");
         /* Sleep for a while since retrying the transaction right away
            is likely to fail again. */
 #if HAVE_NANOSLEEP
@@ -465,8 +461,36 @@ void LocalStore::makeStoreWritable()
 const time_t mtimeStore = 1; /* 1 second into the epoch */
 
 
-static void canonicaliseTimestampAndPermissions(const Path & path, const struct stat & st)
+void canonicalisePathMetaData(const Path & path, bool recurse)
 {
+    checkInterrupt();
+
+    struct stat st;
+    if (lstat(path.c_str(), &st))
+        throw SysError(format("getting attributes of path `%1%'") % path);
+
+    /* Really make sure that the path is of a supported type.  This
+       has already been checked in dumpPath(). */
+    assert(S_ISREG(st.st_mode) || S_ISDIR(st.st_mode) || S_ISLNK(st.st_mode));
+
+    /* Change ownership to the current uid.  If it's a symlink, use
+       lchown if available, otherwise don't bother.  Wrong ownership
+       of a symlink doesn't matter, since the owning user can't change
+       the symlink and can't delete it because the directory is not
+       writable.  The only exception is top-level paths in the Nix
+       store (since that directory is group-writable for the Nix build
+       users group); we check for this case below. */
+    if (st.st_uid != geteuid()) {
+#if HAVE_LCHOWN
+        if (lchown(path.c_str(), geteuid(), (gid_t) -1) == -1)
+#else
+        if (!S_ISLNK(st.st_mode) &&
+            chown(path.c_str(), geteuid(), (gid_t) -1) == -1)
+#endif
+            throw SysError(format("changing owner of `%1%' to %2%")
+                % path % geteuid());
+    }
+
     if (!S_ISLNK(st.st_mode)) {
 
         /* Mask out all type related bits. */
@@ -497,84 +521,18 @@ static void canonicaliseTimestampAndPermissions(const Path & path, const struct
 #endif
             throw SysError(format("changing modification time of `%1%'") % path);
     }
-}
-
-
-void canonicaliseTimestampAndPermissions(const Path & path)
-{
-    struct stat st;
-    if (lstat(path.c_str(), &st))
-        throw SysError(format("getting attributes of path `%1%'") % path);
-    canonicaliseTimestampAndPermissions(path, st);
-}
-
-
-typedef std::pair<dev_t, ino_t> Inode;
-typedef set<Inode> InodesSeen;
 
-
-static void canonicalisePathMetaData_(const Path & path, uid_t fromUid, InodesSeen & inodesSeen)
-{
-    checkInterrupt();
-
-    struct stat st;
-    if (lstat(path.c_str(), &st))
-        throw SysError(format("getting attributes of path `%1%'") % path);
-
-    /* Really make sure that the path is of a supported type.  This
-       has already been checked in dumpPath(). */
-    assert(S_ISREG(st.st_mode) || S_ISDIR(st.st_mode) || S_ISLNK(st.st_mode));
-
-    /* Fail if the file is not owned by the build user.  This prevents
-       us from messing up the ownership/permissions of files
-       hard-linked into the output (e.g. "ln /etc/shadow $out/foo").
-       However, ignore files that we chown'ed ourselves previously to
-       ensure that we don't fail on hard links within the same build
-       (i.e. "touch $out/foo; ln $out/foo $out/bar"). */
-    if (fromUid != (uid_t) -1 && st.st_uid != fromUid) {
-        assert(!S_ISDIR(st.st_mode));
-        if (inodesSeen.find(Inode(st.st_dev, st.st_ino)) == inodesSeen.end())
-            throw BuildError(format("invalid ownership on file `%1%'") % path);
-        mode_t mode = st.st_mode & ~S_IFMT;
-        assert(S_ISLNK(st.st_mode) || (st.st_uid == geteuid() && (mode == 0444 || mode == 0555) && st.st_mtime == mtimeStore));
-        return;
-    }
-
-    inodesSeen.insert(Inode(st.st_dev, st.st_ino));
-
-    canonicaliseTimestampAndPermissions(path, st);
-
-    /* Change ownership to the current uid.  If it's a symlink, use
-       lchown if available, otherwise don't bother.  Wrong ownership
-       of a symlink doesn't matter, since the owning user can't change
-       the symlink and can't delete it because the directory is not
-       writable.  The only exception is top-level paths in the Nix
-       store (since that directory is group-writable for the Nix build
-       users group); we check for this case below. */
-    if (st.st_uid != geteuid()) {
-#if HAVE_LCHOWN
-        if (lchown(path.c_str(), geteuid(), (gid_t) -1) == -1)
-#else
-        if (!S_ISLNK(st.st_mode) &&
-            chown(path.c_str(), geteuid(), (gid_t) -1) == -1)
-#endif
-            throw SysError(format("changing owner of `%1%' to %2%")
-                % path % geteuid());
-    }
-
-    if (S_ISDIR(st.st_mode)) {
+    if (recurse && S_ISDIR(st.st_mode)) {
         Strings names = readDirectory(path);
         foreach (Strings::iterator, i, names)
-            canonicalisePathMetaData_(path + "/" + *i, fromUid, inodesSeen);
+            canonicalisePathMetaData(path + "/" + *i, true);
     }
 }
 
 
-void canonicalisePathMetaData(const Path & path, uid_t fromUid)
+void canonicalisePathMetaData(const Path & path)
 {
-    InodesSeen inodesSeen;
-
-    canonicalisePathMetaData_(path, fromUid, inodesSeen);
+    canonicalisePathMetaData(path, true);
 
     /* On platforms that don't have lchown(), the top-level path can't
        be a symlink, since we can't change its ownership. */
@@ -1236,7 +1194,7 @@ Path LocalStore::addToStoreFromDump(const string & dump, const string & name,
             } else
                 writeFile(dstPath, dump);
 
-            canonicalisePathMetaData(dstPath, -1);
+            canonicalisePathMetaData(dstPath);
 
             /* Register the SHA-256 hash of the NAR serialisation of
                the path in the database.  We may just have computed it
@@ -1301,7 +1259,7 @@ Path LocalStore::addTextToStore(const string & name, const string & s,
 
             writeFile(dstPath, s);
 
-            canonicalisePathMetaData(dstPath, -1);
+            canonicalisePathMetaData(dstPath);
 
             HashResult hash = hashPath(htSHA256, dstPath);
 
@@ -1536,7 +1494,7 @@ Path LocalStore::importPath(bool requireSignature, Source & source)
                 throw SysError(format("cannot move `%1%' to `%2%'")
                     % unpacked % dstPath);
 
-            canonicalisePathMetaData(dstPath, -1);
+            canonicalisePathMetaData(dstPath);
 
             /* !!! if we were clever, we could prevent the hashPath()
                here. */
diff --git a/src/libstore/local-store.hh b/src/libstore/local-store.hh
index 14a826b3a..2b0d71380 100644
--- a/src/libstore/local-store.hh
+++ b/src/libstore/local-store.hh
@@ -307,9 +307,9 @@ private:
      without execute permission; setuid bits etc. are cleared)
    - the owner and group are set to the Nix user and group, if we're
      in a setuid Nix installation. */
-void canonicalisePathMetaData(const Path & path, uid_t fromUid);
+void canonicalisePathMetaData(const Path & path);
 
-void canonicaliseTimestampAndPermissions(const Path & path);
+void canonicalisePathMetaData(const Path & path, bool recurse);
 
 MakeError(PathInUse, Error);
 
diff --git a/src/libstore/optimise-store.cc b/src/libstore/optimise-store.cc
index d833f3aa0..e91c2b1ce 100644
--- a/src/libstore/optimise-store.cc
+++ b/src/libstore/optimise-store.cc
@@ -32,7 +32,7 @@ struct MakeReadOnly
     {
         try {
             /* This will make the path read-only. */
-            if (path != "") canonicaliseTimestampAndPermissions(path);
+            if (path != "") canonicalisePathMetaData(path, false);
         } catch (...) {
             ignoreException();
         }
diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
index 2b5a93213..0e62914c0 100644
--- a/src/libstore/remote-store.cc
+++ b/src/libstore/remote-store.cc
@@ -91,7 +91,7 @@ void RemoteStore::connectToDaemon()
         throw SysError("cannot create Unix domain socket");
     closeOnExec(fdSocket);
 
-    string socketPath = settings.nixDaemonSocketFile;
+    string socketPath = settings.nixStateDir + DEFAULT_SOCKET_PATH;
 
     /* Urgh, sockaddr_un allows path names of only 108 characters.  So
        chdir to the socket directory so that we can pass a relative
diff --git a/src/libstore/worker-protocol.hh b/src/libstore/worker-protocol.hh
index 07f825b92..46035f457 100644
--- a/src/libstore/worker-protocol.hh
+++ b/src/libstore/worker-protocol.hh
@@ -53,6 +53,14 @@ typedef enum {
 #define STDERR_ERROR 0x63787470
 
 
+/* The default location of the daemon socket, relative to nixStateDir.
+   The socket is in a directory to allow you to control access to the
+   Nix daemon by setting the mode/ownership of the directory
+   appropriately.  (This wouldn't work on the socket itself since it
+   must be deleted and recreated on startup.) */
+#define DEFAULT_SOCKET_PATH "/daemon-socket/socket"
+
+
 Path readStorePath(Source & from);
 template<class T> T readStorePaths(Source & from);