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userns: define protobuf messages for uid and gid maps

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Normally, one of the first steps after creating a new user namespace is
to define the mappings used for the user and group IDs of the processes
that will be created in that namespace. This is done by writing mapping
information to the /proc/PID/uid_map and /proc/PID/gid_map files
corresponding to one of the processes in the user namespace.

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Andrey Vagin 2014-10-31 12:14:20 +03:00 • committed by Pavel Emelyanov
parent 4ed63afa00
commit 7450349446
2 changed files with 11 additions and 0 deletions
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1
protobuf/Makefile
View file

@ -62,6 +62,7 @@ proto-obj-y += siginfo.o
proto-obj-y += rpc.o
proto-obj-y += ext-file.o
proto-obj-y += cgroup.o
proto-obj-y += userns.o
proto := $(proto-obj-y:.o=)
proto-c := $(proto-obj-y:.o=.pb-c.c)

10
protobuf/userns.proto Normal file
View file

@ -0,0 +1,10 @@
message uid_gid_extent {
required uint32 first = 1;
required uint32 lower_first = 2;
required uint32 count = 3;
}
message userns_entry {
repeated uid_gid_extent uid_map = 1;
repeated uid_gid_extent gid_map = 2;
}