223f4d8ea6803bd9288d54c819e54a88a63c1730 |
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15-Jul-2011 |
Eric W. Biederman <ebiederm@xmission.com> |
iproute2: Fail "ip netns add" on existing network namespaces. Use O_EXCL so that we only create and mount a new network namespace if there is no chance an existing network namespace is present. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
/external/iproute2/ip/ipnetns.c
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2e8a07f543e6f48f0d0479e3dd4796c18f733e12 |
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15-Jul-2011 |
Eric W. Biederman <ebiederm@xmission.com> |
iproute2: Auto-detect the presence of setns in libc If libc has setns present use that version instead of rolling the syscall wrapper by hand. Dan McGee found the following compile error: gcc -D_GNU_SOURCE -O2 -Wstrict-prototypes -Wall -I../include -DRESOLVE_HOSTNAMES -DLIBDIR=\"/usr/lib/\" -c -o ipnetns.o ipnetns.c ipnetns.c:31:12: error: static declaration of ‘setns’ follows non-static declaration /usr/include/bits/sched.h:93:12: note: previous declaration of ‘setns’ was here make[1]: *** [ipnetns.o] Error 1 Reported-by: Dan McGee <dan@archlinux.org> Tested-by: Dan McGee <dan@archlinux.org> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
/external/iproute2/ip/ipnetns.c
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0dc34c7713bb7055378fe5cbc720d63d0db572a1 |
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13-Jul-2011 |
Eric W. Biederman <ebiederm@xmission.com> |
iproute2: Add processless network namespace support The goal of this code change is to implement a mechanism such that it is simple to work with a kernel that is using multiple network namespaces at once. This comes in handy for interacting with vpns where there may be rfc1918 address overlaps, and different policies default routes, name servers and the like. Configuration specific to a network namespace that would ordinarily be stored under /etc/ is stored under /etc/netns/<name>. For example if the dns server configuration is different for your vpn you would create a file /etc/netns/myvpn/resolv.conf. File descriptors that can be used to manipulate a network namespace can be created by opening /var/run/netns/<NAME>. This adds the following commands to iproute. ip netns add NAME ip netns delete NAME ip netns monitor ip netns list ip netns exec NAME cmd .... ip link set DEV netns NAME ip netns exec exists to cater the vast majority of programs that only know how to operate in a single network namespace. ip netns exec changes the default network namespace, creates a new mount namespace, remounts /sys and bind mounts netns specific configuration files to their standard locations. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
/external/iproute2/ip/ipnetns.c
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