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25da926371
When a new rpc connection is established with an in-kernel server, the traffic passes through svc_process_common, and svc_set_client and down into svcauth_unix_set_client if it is of type RPC_AUTH_NULL or RPC_AUTH_UNIX. svcauth_unix_set_client then looks at the uid of the credential we have assigned to the incomming client and if we don't have the groups already cached makes an upcall to get a list of groups that the client can use. The upcall encodes send a rpc message to user space encoding the uid of the user whose groups we want to know. Encode the kuid of the user in the initial user namespace as nfs mounts can only happen today in the initial user namespace. When a reply to an upcall comes in convert interpret the uid and gid values from the rpc pipe as uids and gids in the initial user namespace and convert them into kuids and kgids before processing them further. When reading proc files listing the uid to gid list cache convert the kuids and kgids from into uids and gids the initial user namespace. As we are displaying server internal details it makes sense to display these values from the servers perspective. Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> |
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| .. | ||
| auth_gss | ||
| xprtrdma | ||
| addr.c | ||
| auth.c | ||
| auth_generic.c | ||
| auth_null.c | ||
| auth_unix.c | ||
| backchannel_rqst.c | ||
| bc_svc.c | ||
| cache.c | ||
| clnt.c | ||
| Kconfig | ||
| Makefile | ||
| netns.h | ||
| rpc_pipe.c | ||
| rpcb_clnt.c | ||
| sched.c | ||
| socklib.c | ||
| stats.c | ||
| sunrpc.h | ||
| sunrpc_syms.c | ||
| svc.c | ||
| svc_xprt.c | ||
| svcauth.c | ||
| svcauth_unix.c | ||
| svcsock.c | ||
| sysctl.c | ||
| timer.c | ||
| xdr.c | ||
| xprt.c | ||
| xprtsock.c | ||