They merely enable ip or ifconfig/route. There is already a way to do this
on the same menuconfig page.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
By user's request.
Decided to not use fcntl(F_SETLKW) in lieu of problems with locking
on networked filesystems. The existence of /var/run/ifstate.new
is treated as a write lock. rename() provides atomicity.
function old new delta
ifupdown_main 1019 1122 +103
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
User report:
or our board we setup eth0:0 on a 10.10.10.x/29 netwrok.
The problem is ip addr flush dev eth0:0 removes all ip addresses from
eth0. You can see this if you run
ip -stat -stat addr flush dev eth0:0
2: eth0 inet 172.27.105.10/22 brd 172.27.107.255 scope global eth0
valid_lft forever preferred_lft forever
2: eth0 inet 10.10.10.9/29 scope global eth0:0
valid_lft forever preferred_lft forever
2: eth0 inet6 fe80::a2f6:fdff:fe18:2b13/64 scope link
valid_lft forever preferred_lft forever
*** Round 1, deleting 3 addresses ***
*** Flush is complete after 1 round ***
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This patch allow to have multiple interface definitions, much like
Debian's ifupdown. More specifically, it removes the check for a
duplicate definition, so the impact on binary size should be fairly
minimal.
This configuration:
iface eth0 inet static
address 192.168.0.15
netmask 255.255.0.0
gateway 192.168.0.1
iface eth0 inet static
address 10.0.0.1
netmask 255.255.255.0
Will add two addresses to eth0 if ip is used. If ifconfig is used,
the standards methods will likely not stack, but the administrator may
still use the manual method. The DHCP method may work depending on the
DHCP client in use.
This is a fairly advanced feature for power users who knows what they
are doing. There are not many other network configuration systems that
allows multiple addresses on an interface.
Signed-off-by: Nicolas Cavallari <nicolas.cavallari@green-communications.fr>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
The -H NAME is deprecated in udhcpc. See commit
2017d48c0d
Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
IPv6 routes need the device argument for link-local routes, or they
cannot be used at all. E.g. "gateway fe80::def" seems to be used in
some places, but kernel refuses to insert the route unless device
name is explicitly specified in the route addition.
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
When a static interface with explicit gateway and metric in /etc/network/interfaces
is enabled using 'ifup', and further, the BusyBox 'ip' applet is enabled, the
following error message appears at the console (and no default route is added):
ip: either "to" is duplicate, or "prio" is garbage
Tracing ifup reveals that it is attempting to run the following shell command:
ip route add default via <GW> dev <DEVICE> prio <METRIC>
'ip' does not understand the 'prio' argument, causing this error. With 'metric',
it works fine.
Signed-off-by: Alex Dowad <alexinbeijing@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
When 'if -a' runs into an failure on an interface all further
interfaces won't be correctly updated in ifstate. This patch
inserts a new variable that only tracks the current interfaces
failure so that the write to ifstate can rely on this and not
the one for the functions return value.
Fixes https://bugs.busybox.net/show_bug.cgi?id=6212
Signed-off-by: Frank Bergmann <frank.frajasalo@googlemail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Does not configure anything. L2 configuration hook scripts should do
their job on receiving ADDRFAM=link. Configuration will be done only
once, irrespective of L3 protocols used.
Using the 'link' family in the interfaces file conforms to the Debian
implementation:
http://sources.debian.net/src/ifupdown/0.7.47.1/link.defn
function old new delta
link_methods - 12 +12
addr_link - 12 +12
link_up_down - 6 +6
static.addr_fams 12 16 +4
------------------------------------------------------------------------------
(add/remove: 3/0 grow/shrink: 1/0 up/down: 34/0) Total: 34 bytes
Signed-off-by: Kaarle Ritvanen <kaarle.ritvanen@datakunkku.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Set environment variable 'PHASE'.
Treat post-up and pre-down as aliases for up and down.
Uses the same logic as ifupdown.nw from ifupdown-0.6.16.
Makes it possible to execute Debian's ifupdown script for
wpa-supplicant.
Signed-off-by: Andreas Oberritter <obi@opendreambox.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This is useful when you have multiple ISPs with failover. It allows
setting the priority of the static gateway and makes it possible
to specify multiple static gateways.
The ubuntu ifupdown supports it.
function old new delta
.rodata 116725 116797 +72
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/0 up/down: 72/0) Total: 72 bytes
text data bss dec hex filename
953343 7313 8984 969640 ecba8 busybox_old
953415 7313 8984 969712 ecbf0 busybox_unstripped
Signed-off-by: Natanael Copa <natanael.copa@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Fix the issue where interface is set to the configured state even if
configuration has failed. Add error check to state setting logic.
Signed-off-by: Lauri Hintsala <lauri.hintsala@bluegiga.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This change retains "or later" state! No licensing _changes_ here,
only form is adjusted (article, space between "GPL" and "v2" and so on).
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
