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ns: Support UTS namespace

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Only two fields are modifiable -- hostname and domainname. So
read them on dump and write on restore.

File format is simple --

u32 magic
u32 length of nodename
u8[] nodename string
u32 length of domainname
u8[] domainname string

For OpenVZ we can write the release at the end, but this is later.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
This commit is contained in:
Pavel Emelyanov
2012-01-26 15:28:00 +04:00
committed by Cyrill Gorcunov
parent 3391416a1b
commit 98f4c2e4de
8 changed files with 173 additions and 2 deletions
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cr-restore.c
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@@ -1435,7 +1435,7 @@ static int restore_root_task(int fd, struct cr_options *opts)
*/
if (opts->with_namespaces)
ns_clone_flags = 0;
ns_clone_flags = CLONE_NEWUTS;
else
ns_clone_flags = 0;