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-rw-r--r--src/libstore/sandbox-defaults.sb6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/libstore/sandbox-defaults.sb b/src/libstore/sandbox-defaults.sb
index 0299d1ee4..c09ce1729 100644
--- a/src/libstore/sandbox-defaults.sb
+++ b/src/libstore/sandbox-defaults.sb
@@ -71,6 +71,12 @@
(literal "/dev/zero")
(subpath "/dev/fd"))
+; Allow pseudo-terminals.
+(allow file*
+ (literal "/dev/ptmx")
+ (regex #"^/dev/pty[a-z]+")
+ (regex #"^/dev/ttys[0-9]+"))
+
; Does nothing, but reduces build noise.
(allow file* (literal "/dev/dtracehelper"))