diff options
Diffstat (limited to 'guix/build/syscalls.scm')
| -rw-r--r-- | guix/build/syscalls.scm | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/guix/build/syscalls.scm b/guix/build/syscalls.scm index 41208e32a8..55b0df3911 100644 --- a/guix/build/syscalls.scm +++ b/guix/build/syscalls.scm @@ -92,6 +92,7 @@ all-network-interface-names network-interface-names network-interface-netmask + network-interface-running? loopback-network-interface? network-interface-address set-network-interface-netmask @@ -1160,6 +1161,7 @@ bytes." (define-as-needed IFF_UP #x1) ;Interface is up (define-as-needed IFF_BROADCAST #x2) ;Broadcast address valid. (define-as-needed IFF_LOOPBACK #x8) ;Is a loopback net. +(define-as-needed IFF_RUNNING #x40) ;interface RFC2863 OPER_UP (define IF_NAMESIZE 16) ;maximum interface name size @@ -1334,6 +1336,13 @@ interface NAME." (close-port sock) (not (zero? (logand flags IFF_LOOPBACK))))) +(define (network-interface-running? name) + "Return true if NAME designates a running network interface." + (let* ((sock (socket SOCK_STREAM AF_INET 0)) + (flags (network-interface-flags sock name))) + (close-port sock) + (not (zero? (logand flags IFF_RUNNING))))) + (define-as-needed (set-network-interface-flags socket name flags) "Set the flag of network interface NAME to FLAGS." (let ((req (make-bytevector ifreq-struct-size))) |