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files: Add file_desc_ops::get_user_ns

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Returns user_ns of file (currently it's not exported to userspace)
and minimal user_ns need for restore file (for example, socket
net_ns->user_ns, regulating setns() permittions).

This will be need to choose correct process as owner of file master.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
This commit is contained in:
Kirill Tkhai
2017-06-07 14:28:04 +03:00
committed by Andrei Vagin
parent 4eb718553a
commit ecd57e0a3c
1 changed files with 7 additions and 0 deletions
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7
criu/include/files.h
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@@ -20,6 +20,7 @@ struct file_desc;
struct cr_imgset;
struct rst_info;
struct parasite_ctl;
struct ns_id;
struct fd_link {
union {
@@ -107,6 +108,12 @@ struct file_desc_ops {
* so it shouldn't be saved for any post-actions.
*/
int (*open)(struct file_desc *d, int *new_fd);
/*
* Returns user_ns of file (currently it's not exported to userspace)
* and minimal user_ns need for restore file (for example, socket
* net_ns->user_ns, regulating setns() permittions).
*/
void (*get_user_ns)(struct file_desc *, uint32_t *, struct ns_id **);
char * (*name)(struct file_desc *, char *b, size_t s);
};