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-rw-r--r--fst/config.go16
1 files changed, 11 insertions, 5 deletions
diff --git a/fst/config.go b/fst/config.go
index ea7d45ad..8827b291 100644
--- a/fst/config.go
+++ b/fst/config.go
@@ -136,11 +136,17 @@ func (s *SandboxConfig) Bwrap(os linux.System) (*bwrap.Config, error) {
}
conf := (&bwrap.Config{
- Net: s.Net,
- UserNS: s.UserNS,
- Hostname: s.Hostname,
- Clearenv: true,
- SetEnv: s.Env,
+ Net: s.Net,
+ UserNS: s.UserNS,
+ Hostname: s.Hostname,
+ Clearenv: true,
+ SetEnv: s.Env,
+
+ /* this is only 4 KiB of memory on a 64-bit system,
+ permissive defaults on NixOS results in around 100 entries
+ so this capacity should eliminate copies for most setups */
+ Filesystem: make([]bwrap.FSBuilder, 0, 256),
+
NewSession: !s.NoNewSession,
DieWithParent: true,
AsInit: true,