davexunit pushed a commit to branch wip-container
in repository guix.
commit 433bb9494c7f28002c885e650e3af53e6c52307e
Author: David Thompson <da...@gnu.org>
Date: Mon Jun 8 08:43:05 2015 -0400
build: syscalls: Add setns syscall wrapper.
* guix/build/syscalls.scm (setns): New procedure.
---
guix/build/syscalls.scm | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/guix/build/syscalls.scm b/guix/build/syscalls.scm
index 3346358..90975e3 100644
--- a/guix/build/syscalls.scm
+++ b/guix/build/syscalls.scm
@@ -45,6 +45,7 @@
CLONE_NEWPID
CLONE_NEWNET
clone
+ setns
IFF_UP
IFF_BROADCAST
@@ -279,6 +280,15 @@ 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))))
+(define setns
+ (let* ((ptr (dynamic-func "setns" (dynamic-link)))
+ (proc (pointer->procedure int ptr (list int int))))
+ (lambda (fdes nstype)
+ "Reassociate the current process with the namespace specified by FDES.
+NSTYPE specifies which type of namespace the current process may be
+reassociated with, or 0 if there is no such limitation."
+ (proc fdes nstype))))
+
;;;
;;; Packed structures.
