From 989176c56e1996a7df87bb501ad09aed1f3b395d Mon Sep 17 00:00:00 2001 From: Eelco Dolstra Date: Fri, 18 Jul 2008 15:34:46 +0000 Subject: [PATCH] * Allow read-only access to the store (e.g., non-root users on NixOS can do operations like "nix-store -qR " even without the Nix daemon). --- scripts/download-using-manifests.pl.in | 3 ++- src/libstore/local-store.cc | 14 +++++++++----- 2 files changed, 11 insertions(+), 6 deletions(-) diff --git a/scripts/download-using-manifests.pl.in b/scripts/download-using-manifests.pl.in index 8207aaaa4..c0b822b91 100644 --- a/scripts/download-using-manifests.pl.in +++ b/scripts/download-using-manifests.pl.in @@ -8,7 +8,6 @@ use File::Temp qw(tempdir); my $manifestDir = "@localstatedir@/nix/manifests"; my $logFile = "@localstatedir@/log/nix/downloads"; -open LOGFILE, ">>$logFile" or die "cannot open log file $logFile"; # Create a temporary directory. my $tmpDir = tempdir("nix-download.XXXXXX", CLEANUP => 1, TMPDIR => 1) @@ -76,6 +75,8 @@ die unless scalar @ARGV == 2; my $targetPath = $ARGV[1]; +open LOGFILE, ">>$logFile" or die "cannot open log file $logFile"; + my $date = strftime ("%F %H:%M:%S UTC", gmtime (time)); print LOGFILE "$$ get $targetPath $date\n"; diff --git a/src/libstore/local-store.cc b/src/libstore/local-store.cc index 105f71122..d886ba558 100644 --- a/src/libstore/local-store.cc +++ b/src/libstore/local-store.cc @@ -15,6 +15,7 @@ #include #include #include +#include namespace nix { @@ -48,8 +49,14 @@ LocalStore::LocalStore() checkStoreNotSymlink(); - Path globalLockPath = nixDBPath + "/big-lock"; - globalLock = openLockFile(globalLockPath.c_str(), true); + try { + Path globalLockPath = nixDBPath + "/big-lock"; + globalLock = openLockFile(globalLockPath.c_str(), true); + } catch (SysError & e) { + if (e.errNo != EACCES) throw; + readOnlyMode = true; + return; + } if (!lockFile(globalLock, ltRead, false)) { printMsg(lvlError, "waiting for the big Nix store lock..."); @@ -59,9 +66,6 @@ LocalStore::LocalStore() createDirs(nixDBPath + "/info"); createDirs(nixDBPath + "/referrer"); - //printMsg(lvlTalkative, "cannot access Nix database; continuing anyway"); - //readOnlyMode = true; - int curSchema = getSchema(); if (curSchema > nixSchemaVersion) throw Error(format("current Nix store schema is version %1%, but I only support %2%")