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Fix using sandbox without user namespaces

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This commit is contained in:
Sebastian Ullrich 2022-02-12 16:28:36 +01:00
parent 4d67ecbbb2
commit c437e1326d
1 changed files with 6 additions and 3 deletions
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9
src/libstore/build/local-derivation-goal.cc
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@ -912,9 +912,12 @@ void LocalDerivationGoal::startBuilder()
sandboxMountNamespace = open(fmt("/proc/%d/ns/mnt", (pid_t) pid).c_str(), O_RDONLY);
if (sandboxMountNamespace.get() == -1)
throw SysError("getting sandbox mount namespace");
sandboxUserNamespace = open(fmt("/proc/%d/ns/user", (pid_t) pid).c_str(), O_RDONLY);
if (sandboxUserNamespace.get() == -1)
throw SysError("getting sandbox user namespace");
if (usingUserNamespace) {
sandboxUserNamespace = open(fmt("/proc/%d/ns/user", (pid_t) pid).c_str(), O_RDONLY);
if (sandboxUserNamespace.get() == -1)
throw SysError("getting sandbox user namespace");
}
/* Signal the builder that we've updated its user namespace. */
writeFull(userNamespaceSync.writeSide.get(), "1");