libutil: Create chmodPath function

Move the identical static `chmod_` functions in libstore to
libutil. the function is called `chmodPath` instead of `chmod`
as otherwise it will shadow the standard library chmod in the nix
namespace, which is somewhat confusing.

Change-Id: I7b5ce379c6c602e3d3a1bbc49dbb70b1ae8f7bad

1 files changed, 6 insertions, 2 deletions

diff --git a/src/libutil/util.cc b/src/libutil/util.cc
index bc2dd1802..2c0fcc897 100644
--- a/src/libutil/util.cc
+++ b/src/libutil/util.cc
@@ -184,6 +184,11 @@ Path canonPath(PathView path, bool resolveSymlinks)
     return s.empty() ? "/" : std::move(s);
 }
 
+void chmodPath(const Path & path, mode_t mode)
+{
+    if (chmod(path.c_str(), mode) == -1)
+        throw SysError("setting permissions on '%s'", path);
+}
 
 Path dirOf(const PathView path)
 {
@@ -1799,8 +1804,7 @@ AutoCloseFD createUnixDomainSocket(const Path & path, mode_t mode)
 
     bind(fdSocket.get(), path);
 
-    if (chmod(path.c_str(), mode) == -1)
-        throw SysError("changing permissions on '%1%'", path);
+    chmodPath(path.c_str(), mode);
 
     if (listen(fdSocket.get(), 100) == -1)
         throw SysError("cannot listen on socket '%1%'", path);