diff options
Diffstat (limited to 'guix/build/syscalls.scm')
| -rw-r--r-- | guix/build/syscalls.scm | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/guix/build/syscalls.scm b/guix/build/syscalls.scm index 68f340ce7b..fc801a5e9d 100644 --- a/guix/build/syscalls.scm +++ b/guix/build/syscalls.scm @@ -328,19 +328,22 @@ 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, a + ;; Some systems may be using an old (pre-2.14) version of glibc where there + ;; is no 'setns' function available. + (false-if-exception + (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, a file descriptor obtained by opening a /proc/PID/ns/* file. NSTYPE specifies which type of namespace the current process may be reassociated with, or 0 if there is no such limitation." - (let ((ret (proc fdes nstype)) - (err (errno))) - (unless (zero? ret) - (throw 'system-error "setns" "~d ~d: ~A" - (list fdes nstype (strerror err)) - (list err))))))) + (let ((ret (proc fdes nstype)) + (err (errno))) + (unless (zero? ret) + (throw 'system-error "setns" "~d ~d: ~A" + (list fdes nstype (strerror err)) + (list err)))))))) (define pivot-root (let* ((ptr (dynamic-func "pivot_root" (dynamic-link))) |