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-rw-r--r--src/libstore/build.cc8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/libstore/build.cc b/src/libstore/build.cc
index 6efb294e8..281bfb495 100644
--- a/src/libstore/build.cc
+++ b/src/libstore/build.cc
@@ -1793,7 +1793,7 @@ void DerivationGoal::startBuilder()
IPC mechanisms (shared memory, message queues,
semaphores). It also ensures that all IPC
objects are destroyed when the builder exits. */
- if (unshare(CLONE_NEWNS | CLONE_NEWNET | CLONE_NEWIPC) == -1)
+ if (unshare(CLONE_NEWNS | CLONE_NEWNET | CLONE_NEWIPC | CLONE_NEWUTS) == -1)
throw SysError("cannot set up private namespaces");
/* Initialise the loopback interface. */
@@ -1808,6 +1808,12 @@ void DerivationGoal::startBuilder()
fd.close();
+ /* Set the hostname etc. to fixed values. */
+ char hostname[] = "localhost";
+ sethostname(hostname, sizeof(hostname));
+ char domainname[] = "(none)"; // kernel default
+ setdomainname(domainname, sizeof(domainname));
+
/* Bind-mount all the directories from the "host"
filesystem that we want in the chroot
environment. */