@@ -36,6 +36,7 @@ (define-module (guix build syscalls)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-19)
#:use-module (srfi srfi-26)
+ #:use-module (srfi srfi-71)
#:use-module (ice-9 rdelim)
#:use-module (ice-9 regex)
#:use-module (ice-9 match)
@@ -121,6 +122,7 @@ (define-module (guix build syscalls)
mkdtemp!
fdatasync
pivot-root
+ unshare
scandir*
getxattr
setxattr
@@ -1183,6 +1185,16 @@ (define pivot-root
(list new-root put-old (strerror err))
(list err)))))))
+(define unshare
+ (false-if-exception
+ (let ((proc (syscall->procedure int "unshare" (list int))))
+ (lambda (flags)
+ (let ((ret err (proc flags)))
+ (unless (zero? ret)
+ (throw 'system-error "unshare" "~d ~d: ~A"
+ (list flags (strerror err))
+ (list err))))))))
+
;;;
;;; Opendir & co.