diff options
Diffstat (limited to 'src/libstore/local-store.cc')
| -rw-r--r-- | src/libstore/local-store.cc | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/src/libstore/local-store.cc b/src/libstore/local-store.cc index 9a85c48d92ad..7b3b7355e42e 100644 --- a/src/libstore/local-store.cc +++ b/src/libstore/local-store.cc @@ -953,17 +953,12 @@ void verifyStore(bool checkContents) typedef std::map<Hash, std::pair<Path, ino_t> > HashToPath; -static void toggleWritable(const Path & path, bool writable) +static void makeWritable(const Path & path) { struct stat st; if (lstat(path.c_str(), &st)) throw SysError(format("getting attributes of path `%1%'") % path); - - mode_t mode = st.st_mode; - if (writable) mode |= S_IWUSR; - else mode &= ~(S_IWUSR | S_IWGRP | S_IWOTH); - - if (chmod(path.c_str(), mode) == -1) + if (chmod(path.c_str(), st.st_mode | S_IWUSR) == -1) throw SysError(format("changing writability of `%1%'") % path); } @@ -1023,7 +1018,11 @@ static void hashAndLink(bool dryRun, HashToPath & hashToPath, Path tempLink = (format("%1%.tmp-%2%-%3%") % path % getpid() % rand()).str(); - toggleWritable(dirOf(path), true); + /* Make the containing directory writable, but only if + it's not the store itself (we don't want or need to + mess with its permissions). */ + bool mustToggle = !isStorePath(path); + if (mustToggle) makeWritable(dirOf(path)); if (link(prevPath.first.c_str(), tempLink.c_str()) == -1) throw SysError(format("cannot link `%1%' to `%2%'") @@ -1036,7 +1035,7 @@ static void hashAndLink(bool dryRun, HashToPath & hashToPath, /* Make the directory read-only again and reset its timestamp back to 0. */ - _canonicalisePathMetaData(dirOf(path), false); + if (mustToggle) _canonicalisePathMetaData(dirOf(path), false); } else printMsg(lvlTalkative, format("would link `%1%' to `%2%'") % path % prevPath.first); |