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RDMA/nldev: Factor out the PID namespace check

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The PID namespace is going to be used in the .doit callback, so generalize
its implementation.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Leon Romanovsky 2019-01-30 12:48:54 +02:00 committed by Jason Gunthorpe
parent f732e7135b
commit 8be565e65f
1 changed files with 12 additions and 10 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

22
drivers/infiniband/core/nldev.c
View file

@ -943,6 +943,17 @@ static const struct nldev_fill_res_entry fill_entries[RDMA_RESTRACK_MAX] = {
},
};
static bool is_visible_in_pid_ns(struct rdma_restrack_entry *res)
{
/*
* 1. Kern resources should be visible in init name space only
* 2. Present only resources visible in the current namespace
*/
if (rdma_is_kernel_res(res))
return task_active_pid_ns(current) == &init_pid_ns;
return task_active_pid_ns(current) == task_active_pid_ns(res->task);
}
static int res_get_common_dumpit(struct sk_buff *skb,
struct netlink_callback *cb,
enum rdma_restrack_type res_type)
@ -1007,16 +1018,7 @@ static int res_get_common_dumpit(struct sk_buff *skb,
if (idx < start)
goto next;
if ((rdma_is_kernel_res(res) &&
task_active_pid_ns(current) != &init_pid_ns) ||
(!rdma_is_kernel_res(res) && task_active_pid_ns(current) !=
task_active_pid_ns(res->task)))
/*
* 1. Kern resources should be visible in init
* namspace only
* 2. Present only resources visible in the current
* namespace
*/
if (!is_visible_in_pid_ns(res))
goto next;
if (!rdma_restrack_get(res))