e7f5691d45
Based on discussions with Rohan Prinja <rohan.prinja@gmail.com>.
* guix/build/syscalls.scm (<interface>): New record type.
(write-interface, values->interface, unfold-interface-list,
network-interfaces, free-ifaddrs): New procedures.
(ifaddrs): New C struct.
(%struct-ifaddrs-type, %sizeof-ifaddrs): New macros.
* tests/syscalls.scm ("network-interfaces returns one or more interfaces",
"network-interfaces returns \"lo\""): New tests.
240 lines
7.9 KiB
Scheme
240 lines
7.9 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2014, 2015 Ludovic Courtès <ludo@gnu.org>
|
||
;;; Copyright © 2015 David Thompson <davet@gnu.org>
|
||
;;;
|
||
;;; This file is part of GNU Guix.
|
||
;;;
|
||
;;; GNU Guix is free software; you can redistribute it and/or modify it
|
||
;;; under the terms of the GNU General Public License as published by
|
||
;;; the Free Software Foundation; either version 3 of the License, or (at
|
||
;;; your option) any later version.
|
||
;;;
|
||
;;; GNU Guix is distributed in the hope that it will be useful, but
|
||
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
;;; GNU General Public License for more details.
|
||
;;;
|
||
;;; You should have received a copy of the GNU General Public License
|
||
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
|
||
|
||
(define-module (test-syscalls)
|
||
#:use-module (guix utils)
|
||
#:use-module (guix build syscalls)
|
||
#:use-module (srfi srfi-1)
|
||
#:use-module (srfi srfi-26)
|
||
#:use-module (srfi srfi-64)
|
||
#:use-module (ice-9 match))
|
||
|
||
;; Test the (guix build syscalls) module, although there's not much that can
|
||
;; actually be tested without being root.
|
||
|
||
(test-begin "syscalls")
|
||
|
||
(test-equal "mount, ENOENT"
|
||
ENOENT
|
||
(catch 'system-error
|
||
(lambda ()
|
||
(mount "/dev/null" "/does-not-exist" "ext2")
|
||
#f)
|
||
(compose system-error-errno list)))
|
||
|
||
(test-assert "umount, ENOENT/EPERM"
|
||
(catch 'system-error
|
||
(lambda ()
|
||
(umount "/does-not-exist")
|
||
#f)
|
||
(lambda args
|
||
;; Both return values have been encountered in the wild.
|
||
(memv (system-error-errno args) (list EPERM ENOENT)))))
|
||
|
||
(test-assert "mount-points"
|
||
;; Reportedly "/" is not always listed as a mount point, so check a few
|
||
;; others (see <http://bugs.gnu.org/20261>.)
|
||
(any (cute member <> (mount-points))
|
||
'("/" "/proc" "/sys" "/dev")))
|
||
|
||
(test-assert "swapon, ENOENT/EPERM"
|
||
(catch 'system-error
|
||
(lambda ()
|
||
(swapon "/does-not-exist")
|
||
#f)
|
||
(lambda args
|
||
(memv (system-error-errno args) (list EPERM ENOENT)))))
|
||
|
||
(test-assert "swapoff, ENOENT/EINVAL/EPERM"
|
||
(catch 'system-error
|
||
(lambda ()
|
||
(swapoff "/does-not-exist")
|
||
#f)
|
||
(lambda args
|
||
(memv (system-error-errno args) (list EPERM EINVAL ENOENT)))))
|
||
|
||
(test-assert "mkdtemp!"
|
||
(let* ((tmp (or (getenv "TMPDIR") "/tmp"))
|
||
(dir (mkdtemp! (string-append tmp "/guix-test-XXXXXX"))))
|
||
(and (file-exists? dir)
|
||
(begin
|
||
(rmdir dir)
|
||
#t))))
|
||
|
||
(define (user-namespace pid)
|
||
(string-append "/proc/" (number->string pid) "/ns/user"))
|
||
|
||
(unless (file-exists? (user-namespace (getpid)))
|
||
(test-skip 1))
|
||
(test-assert "clone"
|
||
(match (clone (logior CLONE_NEWUSER SIGCHLD))
|
||
(0 (primitive-exit 42))
|
||
(pid
|
||
;; Check if user namespaces are different.
|
||
(and (not (equal? (readlink (user-namespace pid))
|
||
(readlink (user-namespace (getpid)))))
|
||
(match (waitpid pid)
|
||
((_ . status)
|
||
(= 42 (status:exit-val status))))))))
|
||
|
||
(unless (file-exists? (user-namespace (getpid)))
|
||
(test-skip 1))
|
||
(test-assert "setns"
|
||
(match (clone (logior CLONE_NEWUSER SIGCHLD))
|
||
(0 (primitive-exit 0))
|
||
(clone-pid
|
||
(match (pipe)
|
||
((in . out)
|
||
(match (primitive-fork)
|
||
(0
|
||
(close in)
|
||
;; Join the user namespace.
|
||
(call-with-input-file (user-namespace clone-pid)
|
||
(lambda (port)
|
||
(setns (port->fdes port) 0)))
|
||
(write 'done out)
|
||
(close out)
|
||
(primitive-exit 0))
|
||
(fork-pid
|
||
(close out)
|
||
;; Wait for the child process to join the namespace.
|
||
(read in)
|
||
(let ((result (and (equal? (readlink (user-namespace clone-pid))
|
||
(readlink (user-namespace fork-pid))))))
|
||
;; Clean up.
|
||
(waitpid clone-pid)
|
||
(waitpid fork-pid)
|
||
result))))))))
|
||
|
||
(unless (file-exists? (user-namespace (getpid)))
|
||
(test-skip 1))
|
||
(test-assert "pivot-root"
|
||
(match (pipe)
|
||
((in . out)
|
||
(match (clone (logior CLONE_NEWUSER CLONE_NEWNS SIGCHLD))
|
||
(0
|
||
(close in)
|
||
(call-with-temporary-directory
|
||
(lambda (root)
|
||
(let ((put-old (string-append root "/real-root")))
|
||
(mount "none" root "tmpfs")
|
||
(mkdir put-old)
|
||
(call-with-output-file (string-append root "/test")
|
||
(lambda (port)
|
||
(display "testing\n" port)))
|
||
(pivot-root root put-old)
|
||
;; The test file should now be located inside the root directory.
|
||
(write (file-exists? "/test") out)
|
||
(close out))))
|
||
(primitive-exit 0))
|
||
(pid
|
||
(close out)
|
||
(let ((result (read in)))
|
||
(close in)
|
||
(and (zero? (match (waitpid pid)
|
||
((_ . status)
|
||
(status:exit-val status))))
|
||
(eq? #t result))))))))
|
||
|
||
(test-assert "all-network-interface-names"
|
||
(match (all-network-interface-names)
|
||
(((? string? names) ..1)
|
||
(member "lo" names))))
|
||
|
||
(test-assert "network-interface-names"
|
||
(match (network-interface-names)
|
||
(((? string? names) ..1)
|
||
(lset<= string=? names (all-network-interface-names)))))
|
||
|
||
(test-assert "network-interface-flags"
|
||
(let* ((sock (socket AF_INET SOCK_STREAM 0))
|
||
(flags (network-interface-flags sock "lo")))
|
||
(close-port sock)
|
||
(and (not (zero? (logand flags IFF_LOOPBACK)))
|
||
(not (zero? (logand flags IFF_UP))))))
|
||
|
||
(test-equal "loopback-network-interface?"
|
||
ENODEV
|
||
(and (loopback-network-interface? "lo")
|
||
(catch 'system-error
|
||
(lambda ()
|
||
(loopback-network-interface? "nonexistent")
|
||
#f)
|
||
(lambda args
|
||
(system-error-errno args)))))
|
||
|
||
(test-skip (if (zero? (getuid)) 1 0))
|
||
(test-assert "set-network-interface-flags"
|
||
(let ((sock (socket AF_INET SOCK_STREAM 0)))
|
||
(catch 'system-error
|
||
(lambda ()
|
||
(set-network-interface-flags sock "lo" IFF_UP))
|
||
(lambda args
|
||
(close-port sock)
|
||
;; We get EPERM with Linux 3.18ish and EACCES with 2.6.32.
|
||
(memv (system-error-errno args) (list EPERM EACCES))))))
|
||
|
||
(test-equal "network-interface-address lo"
|
||
(make-socket-address AF_INET (inet-pton AF_INET "127.0.0.1") 0)
|
||
(let* ((sock (socket AF_INET SOCK_STREAM 0))
|
||
(addr (network-interface-address sock "lo")))
|
||
(close-port sock)
|
||
addr))
|
||
|
||
(test-assert "set-network-interface-address"
|
||
(let ((sock (socket AF_INET SOCK_STREAM 0)))
|
||
(catch 'system-error
|
||
(lambda ()
|
||
(set-network-interface-address sock "nonexistent"
|
||
(make-socket-address
|
||
AF_INET
|
||
(inet-pton AF_INET "127.12.14.15")
|
||
0)))
|
||
(lambda args
|
||
(close-port sock)
|
||
;; We get EPERM with Linux 3.18ish and EACCES with 2.6.32.
|
||
(memv (system-error-errno args) (list EPERM EACCES))))))
|
||
|
||
(test-equal "network-interfaces returns one or more interfaces"
|
||
'(#t #t #t)
|
||
(match (network-interfaces)
|
||
((interfaces ..1)
|
||
(list (every interface? interfaces)
|
||
(every string? (map interface-name interfaces))
|
||
(every vector? (map interface-address interfaces))))))
|
||
|
||
(test-equal "network-interfaces returns \"lo\""
|
||
(list #t (make-socket-address AF_INET (inet-pton AF_INET "127.0.0.1") 0))
|
||
(match (filter (lambda (interface)
|
||
(string=? "lo" (interface-name interface)))
|
||
(network-interfaces))
|
||
((loopbacks ..1)
|
||
(list (every (lambda (lo)
|
||
(not (zero? (logand IFF_LOOPBACK (interface-flags lo)))))
|
||
loopbacks)
|
||
(match (find (lambda (lo)
|
||
(= AF_INET (sockaddr:fam (interface-address lo))))
|
||
loopbacks)
|
||
(#f #f)
|
||
(lo (interface-address lo)))))))
|
||
|
||
(test-end)
|
||
|
||
|
||
(exit (= (test-runner-fail-count (test-runner-current)) 0))
|