A step further, but still not ok, IMHO. It displays all the interfaces ___that
do have an ip address___.
The output of inetutils ifconfig is below followed by the output of the net-
tools one. net tools shows also the ipv6 address of the interface that could
be good to add to inetutils too :-)..
Thanks
Giampaolo
------------------------------------------------------------------------------------------------------------
inetutils ifconfig output
dummy0 Link encap:Ethernet HWaddr 12:27:1C:2A:9A:69
inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 TX bytes:5064
eth0 Link encap:Ethernet HWaddr 00:16:D3:5B:F6:0D
inet addr:192.168.1.103 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3951 errors:0 dropped:0 overruns:0 frame:0
TX packets:3688 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2762099 TX bytes:607312
Interrupt:16
eth0:test Link encap:Ethernet HWaddr 00:16:D3:5B:F6:0D
inet addr:192.168.100.100 Bcast:192.168.100.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:16
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:905427 errors:0 dropped:0 overruns:0 frame:0
TX packets:905427 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:375065391 TX bytes:375065391
tap0 Link encap:Ethernet HWaddr CA:CE:C4:E8:42:AB
inet addr:192.168.3.1 Bcast:192.168.3.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:4893 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:0 TX bytes:0
--------------------------------------------------------------------------------------------------------------
net tools 1.60 ifconfig output
dummy0 Link encap:Ethernet HWaddr 12:27:1C:2A:9A:69
inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::1027:1cff:fe2a:9a69/64 Scope:Link
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:48 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:5064 (4.9 Kb)
eth0 Link encap:Ethernet HWaddr 00:16:D3:5B:F6:0D
inet addr:192.168.1.103 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::216:d3ff:fe5b:f60d/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3953 errors:0 dropped:0 overruns:0 frame:0
TX packets:3688 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2762227 (2.6 Mb) TX bytes:607312 (593.0 Kb)
Interrupt:16
eth0:test Link encap:Ethernet HWaddr 00:16:D3:5B:F6:0D
inet addr:192.168.100.100 Bcast:192.168.100.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:16
gre0 Link encap:UNSPEC HWaddr 00-00-00-00-
FF-00-00-00-00-00-00-00-00-00-00-00
NOARP MTU:1476 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
ip6tnl0 Link encap:UNSPEC HWaddr
00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
NOARP MTU:1460 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:905449 errors:0 dropped:0 overruns:0 frame:0
TX packets:905449 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:375067639 (357.6 Mb) TX bytes:375067639 (357.6 Mb)
sit0 Link encap:IPv6-in-IPv4
NOARP MTU:1480 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
tap0 Link encap:Ethernet HWaddr CA:CE:C4:E8:42:AB
inet addr:192.168.3.1 Bcast:192.168.3.255 Mask:255.255.255.0
inet6 addr: fe80::c8ce:c4ff:fee8:42ab/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:4893 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
tunl0 Link encap:IPIP Tunnel HWaddr
NOARP MTU:1480 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
vboxnet0 Link encap:Ethernet HWaddr 0A:00:27:00:00:00
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
On Friday 30 July 2010 01:58:42 Giuseppe Scrivano wrote:
> Hello,
>
> Giampaolo Gallo <g...@iws.it> writes:
> > You did thanks..
> >
> > I flushed the stdout and the result was the same, so, IMHO it isn't a
> > buffering problem.
> > The command "ifconfig -a" sould show all the interfaces installed on my
> > machine. It shows only the loopback (lo) interface instead. The program
> > parses the full content of /proc/net/dev but it shows only the first
> > interface it finds, i.e. "lo".
> > I tried also by changing the backend (system/linux.* -> system/generic.*)
> > without success.
> > My machine is a Linux x86_64 2.6.34.1 with glibc 2.11.2. If you want more
> > information please ask and I will be happy to answer.
>
> can you please try the attached patch? Does it fix the problem for you?
>
> Cheers,
> Giuseppe
>
> From 95ac7d15532a2a42db9048d4cc7b8ca4f7b2c3bd Mon Sep 17 00:00:00 2001
> From: Giuseppe Scrivano <gscriv...@gnu.org>
> Date: Fri, 30 Jul 2010 01:53:57 +0200
> Subject: [PATCH] * ifconfig/if_index.c (if_nameindex): Remove local
> variable `len'. Remove code that compute the sizeof of the struct `ifreq'.
>
> ---
> ChangeLog | 5 +++++
> ifconfig/if_index.c | 12 +-----------
> 2 files changed, 6 insertions(+), 11 deletions(-)
>
> diff --git a/ChangeLog b/ChangeLog
> index 9c5795e..052daee 100644
> --- a/ChangeLog
> +++ b/ChangeLog
> @@ -1,3 +1,8 @@
> +2010-07-30 Giuseppe Scrivano <gscriv...@gnu.org>
> +
> + * ifconfig/if_index.c (if_nameindex): Remove local variable `len'.
> + Remove code that compute the sizeof of the struct `ifreq'.
> +
> 2010-07-10 Alfred M. Szmidt <a...@gnu.org>
>
> * ifconfig/options.c (parse_opt_set_default_format): Abort if no
> diff --git a/ifconfig/if_index.c b/ifconfig/if_index.c
> index 1080aca..3062bf7 100644
> --- a/ifconfig/if_index.c
> +++ b/ifconfig/if_index.c
> @@ -132,19 +132,9 @@ if_nameindex (void)
> end = (struct ifreq *) ((caddr_t) ifr + ifc.ifc_len);
> while (ifr < end)
> {
> - int len;
> -# ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
> -# undef MAX
> -# define MAX(a,b) (((a) > (b)) ? (a) : (b))
> - len = MAX (sizeof (struct sockaddr), ifr->ifr_addr.sa_len);
> -# else
> - len = sizeof (struct sockaddr);
> -# endif
> -
> cur = ifr;
>
> - /* Step along the array by the size of the current structure */
> - ifr = (struct ifreq *) ((caddr_t) ifr + len + IFNAMSIZ);
> + ++ifr;
>
> /* We ignore the other families .. OK ? */
> if (cur->ifr_addr.sa_family != AF_INET)
