From cf897cbacc3ddcf5d5d553ee19002995985fff11 Mon Sep 17 00:00:00 2001
From: David Thompson <dthompson2@worcester.edu>
Date: Sat, 5 Sep 2015 13:36:53 -0400
Subject: [PATCH] build: syscalls: Properly handle clone errors.
* guix/build/syscalls.scm (clone): Catch -1 return value and throw error.
---
guix/build/syscalls.scm | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/guix/build/syscalls.scm b/guix/build/syscalls.scm
index fc801a5e9de..093eb0a1a0e 100644
--- a/guix/build/syscalls.scm
+++ b/guix/build/syscalls.scm
@@ -325,7 +325,13 @@ (define clone
"Create a new child process by duplicating the current parent process.
Unlike the fork system call, clone accepts FLAGS that specify which resources
are shared between the parent and child processes."
- (proc syscall-id flags %null-pointer))))
+ (let ((ret (proc syscall-id flags %null-pointer))
+ (err (errno)))
+ (if (= ret -1)
+ (throw 'system-error "clone" "~d: ~A"
+ (list flags (strerror err))
+ (list err))
+ ret)))))
(define setns
;; Some systems may be using an old (pre-2.14) version of glibc where there
--
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