diff options
| -rw-r--r-- | guix/build/syscalls.scm | 42 | ||||
| -rw-r--r-- | tests/syscalls.scm | 21 |
2 files changed, 63 insertions, 0 deletions
diff --git a/guix/build/syscalls.scm b/guix/build/syscalls.scm index 1ad6cb4618..f4d4d155ec 100644 --- a/guix/build/syscalls.scm +++ b/guix/build/syscalls.scm @@ -87,10 +87,12 @@ all-network-interface-names network-interface-names network-interface-flags + network-interface-netmask loopback-network-interface? network-interface-address set-network-interface-flags set-network-interface-address + set-network-interface-netmask set-network-interface-up configure-network-interface @@ -764,6 +766,14 @@ exception if it's already taken." (if (string-contains %host-type "linux") #x8916 ;GNU/Linux -1)) ;FIXME: GNU/Hurd? +(define SIOCGIFNETMASK + (if (string-contains %host-type "linux") + #x891b ;GNU/Linux + -1)) ;FIXME: GNU/Hurd? +(define SIOCSIFNETMASK + (if (string-contains %host-type "linux") + #x891c ;GNU/Linux + -1)) ;FIXME: GNU/Hurd? ;; Flags and constants from <net/if.h>. @@ -970,6 +980,22 @@ interface NAME." (list name (strerror err)) (list err)))))) +(define (set-network-interface-netmask socket name sockaddr) + "Set the network mask of interface NAME to SOCKADDR." + (let ((req (make-bytevector ifreq-struct-size))) + (bytevector-copy! (string->utf8 name) 0 req 0 + (min (string-length name) (- IF_NAMESIZE 1))) + ;; Set the 'ifr_addr' field. + (write-socket-address! sockaddr req IF_NAMESIZE) + (let-values (((ret err) + (%ioctl (fileno socket) SIOCSIFNETMASK + (bytevector->pointer req)))) + (unless (zero? ret) + (throw 'system-error "set-network-interface-netmask" + "set-network-interface-netmask on ~A: ~A" + (list name (strerror err)) + (list err)))))) + (define (network-interface-address socket name) "Return the address of network interface NAME. The result is an object of the same type as that returned by 'make-socket-address'." @@ -986,6 +1012,22 @@ the same type as that returned by 'make-socket-address'." (list name (strerror err)) (list err)))))) +(define (network-interface-netmask socket name) + "Return the netmask of network interface NAME. The result is an object of +the same type as that returned by 'make-socket-address'." + (let ((req (make-bytevector ifreq-struct-size))) + (bytevector-copy! (string->utf8 name) 0 req 0 + (min (string-length name) (- IF_NAMESIZE 1))) + (let-values (((ret err) + (%ioctl (fileno socket) SIOCGIFNETMASK + (bytevector->pointer req)))) + (if (zero? ret) + (read-socket-address req IF_NAMESIZE) + (throw 'system-error "network-interface-netmask" + "network-interface-netmask on ~A: ~A" + (list name (strerror err)) + (list err)))))) + (define (configure-network-interface name sockaddr flags) "Configure network interface NAME to use SOCKADDR, an address as returned by 'make-socket-address', and FLAGS, a bitwise-or of IFF_* constants." diff --git a/tests/syscalls.scm b/tests/syscalls.scm index 9eb19f9c80..fd177265f0 100644 --- a/tests/syscalls.scm +++ b/tests/syscalls.scm @@ -326,6 +326,27 @@ ;; 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-netmask lo" + (make-socket-address AF_INET (inet-pton AF_INET "255.0.0.0") 0) + (let* ((sock (socket AF_INET SOCK_STREAM 0)) + (addr (network-interface-netmask sock "lo"))) + (close-port sock) + addr)) + +(test-skip (if (zero? (getuid)) 1 0)) +(test-assert "set-network-interface-netmask" + (let ((sock (socket AF_INET SOCK_STREAM 0))) + (catch 'system-error + (lambda () + (set-network-interface-netmask sock "nonexistent" + (make-socket-address + AF_INET + (inet-pton AF_INET "255.0.0.0") + 0))) + (lambda args + (close-port sock) + (memv (system-error-errno args) (list EPERM EACCES)))))) + (test-equal "network-interfaces returns one or more interfaces" '(#t #t #t) (match (network-interfaces) |