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authorEric W. Biederman <ebiederm@xmission.com>2012-05-23 18:01:20 -0600
committerEric W. Biederman <ebiederm@xmission.com>2012-08-14 21:47:55 -0700
commitadb37c4c67f807f16beb222028fb3ce9a354dc2b (patch)
tree59f46f84b013f1a6390c72d58fe5b158c6e4b58e /net/key
parentfc5795c8a94c2d0b221dffae9ebb22686b3dafd8 (diff)
userns: Make seq_file's user namespace accessible
struct file already has a user namespace associated with it in file->f_cred->user_ns, unfortunately because struct seq_file has no struct file backpointer associated with it, it is difficult to get at the user namespace in seq_file context. Therefore add a helper function seq_user_ns to return the associated user namespace and a user_ns field to struct seq_file to be used in implementing seq_user_ns. Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
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