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-rw-r--r--gnu/build/activation.scm8
1 files changed, 5 insertions, 3 deletions
diff --git a/gnu/build/activation.scm b/gnu/build/activation.scm
index 8697d9d16d..352e736050 100644
--- a/gnu/build/activation.scm
+++ b/gnu/build/activation.scm
@@ -369,9 +369,11 @@ found in Linux 3.4 onward that prevents users from attaching to their own
processes--see Yama.txt in the Linux source tree for the rationale. This
sounds like an unacceptable restriction for little or no security
improvement."
- (call-with-output-file "/proc/sys/kernel/yama/ptrace_scope"
- (lambda (port)
- (display 0 port))))
+ (let ((file "/proc/sys/kernel/yama/ptrace_scope"))
+ (when (file-exists? file)
+ (call-with-output-file file
+ (lambda (port)
+ (display 0 port))))))
(define %current-system