From: Ian Kent <ik...@redhat.com> If the caller is running within a container then execute the usermode helper callback within the container also.
Signed-off-by: Ian Kent <ik...@redhat.com> Cc: Benjamin Coddington <bcodd...@redhat.com> Cc: Al Viro <v...@zeniv.linux.org.uk> Cc: J. Bruce Fields <bfie...@fieldses.org> Cc: David Howells <dhowe...@redhat.com> Cc: Trond Myklebust <trond.mykleb...@primarydata.com> Cc: Oleg Nesterov <onest...@redhat.com> Cc: Eric W. Biederman <ebied...@xmission.com> Cc: Jeff Layton <jeff.lay...@primarydata.com> --- fs/nfs/objlayout/objlayout.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/fs/nfs/objlayout/objlayout.c b/fs/nfs/objlayout/objlayout.c index 919efd4..1d4fd11 100644 --- a/fs/nfs/objlayout/objlayout.c +++ b/fs/nfs/objlayout/objlayout.c @@ -600,8 +600,14 @@ static int __objlayout_upcall(struct __auto_login *login) NULL }; char *argv[8]; + int umh_token; int ret; + /* If running within a container use the container namespace */ + umh_token = 0; + if (current->nsproxy->net_ns != &init_net) + umh_token = umh_wq_get_token(0, "objlayout"); + if (unlikely(!osd_login_prog[0])) { dprintk("%s: osd_login_prog is disabled\n", __func__); return -EACCES; @@ -620,7 +626,13 @@ static int __objlayout_upcall(struct __auto_login *login) argv[6] = login->systemid_hex; argv[7] = NULL; - ret = call_usermodehelper(argv[0], argv, envp, UMH_WAIT_PROC); + if (!umh_token) + ret = call_usermodehelper(argv[0], argv, envp, UMH_WAIT_PROC); + else { + ret = call_usermodehelper_service(argv[0], argv, envp, + umh_token, UMH_WAIT_PROC); + umh_wq_put_token(umh_token); + } /* * Disable the upcall mechanism if we're getting an ENOENT or * EACCES error. The admin can re-enable it on the fly by using -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/