From cf897cbacc3ddcf5d5d553ee19002995985fff11 Mon Sep 17 00:00:00 2001 From: David Thompson 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 fc801a5e9d..093eb0a1a0 100644 --- a/guix/build/syscalls.scm +++ b/guix/build/syscalls.scm @@ -325,7 +325,13 @@ string TMPL and return its file name. TMPL must end with 'XXXXXX'." "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