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[fs/lustre-release.git] / lustre / ptlrpc / sec_lproc.c
1 /*
2  * GPL HEADER START
3  *
4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 only,
8  * as published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful, but
11  * WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * General Public License version 2 for more details (a copy is included
14  * in the LICENSE file that accompanied this code).
15  *
16  * You should have received a copy of the GNU General Public License
17  * version 2 along with this program; If not, see
18  * http://www.gnu.org/licenses/gpl-2.0.html
19  *
20  * GPL HEADER END
21  */
22 /*
23  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24  * Use is subject to license terms.
25  *
26  * Copyright (c) 2014, Intel Corporation.
27  */
28 /*
29  * This file is part of Lustre, http://www.lustre.org/
30  * Lustre is a trademark of Sun Microsystems, Inc.
31  *
32  * lustre/ptlrpc/sec_lproc.c
33  *
34  * Author: Eric Mei <ericm@clusterfs.com>
35  */
36
37 #define DEBUG_SUBSYSTEM S_SEC
38
39 #include <libcfs/libcfs.h>
40 #include <linux/crypto.h>
41
42 #include <obd.h>
43 #include <obd_class.h>
44 #include <obd_support.h>
45 #include <lustre_net.h>
46 #include <lustre_import.h>
47 #include <lustre_dlm.h>
48 #include <lustre_sec.h>
49
50 #include "ptlrpc_internal.h"
51
52
53 struct proc_dir_entry *sptlrpc_proc_root = NULL;
54 EXPORT_SYMBOL(sptlrpc_proc_root);
55
56 static char *sec_flags2str(unsigned long flags, char *buf, int bufsize)
57 {
58         buf[0] = '\0';
59
60         if (flags & PTLRPC_SEC_FL_REVERSE)
61                 strlcat(buf, "reverse,", bufsize);
62         if (flags & PTLRPC_SEC_FL_ROOTONLY)
63                 strlcat(buf, "rootonly,", bufsize);
64         if (flags & PTLRPC_SEC_FL_UDESC)
65                 strlcat(buf, "udesc,", bufsize);
66         if (flags & PTLRPC_SEC_FL_BULK)
67                 strlcat(buf, "bulk,", bufsize);
68         if (buf[0] == '\0')
69                 strlcat(buf, "-,", bufsize);
70
71         return buf;
72 }
73
74 static int sptlrpc_info_lprocfs_seq_show(struct seq_file *seq, void *v)
75 {
76         struct obd_device *dev = seq->private;
77         struct client_obd *cli = &dev->u.cli;
78         struct ptlrpc_sec *sec = NULL;
79         char               str[32];
80
81         LASSERT(strcmp(dev->obd_type->typ_name, LUSTRE_OSC_NAME) == 0 ||
82                 strcmp(dev->obd_type->typ_name, LUSTRE_MDC_NAME) == 0 ||
83                 strcmp(dev->obd_type->typ_name, LUSTRE_MGC_NAME) == 0 ||
84                 strcmp(dev->obd_type->typ_name, LUSTRE_LWP_NAME) == 0 ||
85                 strcmp(dev->obd_type->typ_name, LUSTRE_OSP_NAME) == 0);
86
87         if (cli->cl_import)
88                 sec = sptlrpc_import_sec_ref(cli->cl_import);
89         if (sec == NULL)
90                 goto out;
91
92         sec_flags2str(sec->ps_flvr.sf_flags, str, sizeof(str));
93
94         seq_printf(seq, "rpc flavor:    %s\n",
95                    sptlrpc_flavor2name_base(sec->ps_flvr.sf_rpc));
96         seq_printf(seq, "bulk flavor:   %s\n",
97                    sptlrpc_flavor2name_bulk(&sec->ps_flvr, str, sizeof(str)));
98         seq_printf(seq, "flags:         %s\n",
99                    sec_flags2str(sec->ps_flvr.sf_flags, str, sizeof(str)));
100         seq_printf(seq, "id:            %d\n", sec->ps_id);
101         seq_printf(seq, "refcount:      %d\n",
102                    atomic_read(&sec->ps_refcount));
103         seq_printf(seq, "nctx:  %d\n", atomic_read(&sec->ps_nctx));
104         seq_printf(seq, "gc internal    %lld\n", sec->ps_gc_interval);
105         seq_printf(seq, "gc next        %lld\n",
106                    sec->ps_gc_interval ?
107                    (s64)(sec->ps_gc_next - ktime_get_real_seconds()) : 0ll);
108
109         sptlrpc_sec_put(sec);
110 out:
111         return 0;
112 }
113
114 LPROC_SEQ_FOPS_RO(sptlrpc_info_lprocfs);
115
116 static int sptlrpc_ctxs_lprocfs_seq_show(struct seq_file *seq, void *v)
117 {
118         struct obd_device *dev = seq->private;
119         struct client_obd *cli = &dev->u.cli;
120         struct ptlrpc_sec *sec = NULL;
121
122         LASSERT(strcmp(dev->obd_type->typ_name, LUSTRE_OSC_NAME) == 0 ||
123                 strcmp(dev->obd_type->typ_name, LUSTRE_MDC_NAME) == 0 ||
124                 strcmp(dev->obd_type->typ_name, LUSTRE_MGC_NAME) == 0 ||
125                 strcmp(dev->obd_type->typ_name, LUSTRE_LWP_NAME) == 0 ||
126                 strcmp(dev->obd_type->typ_name, LUSTRE_OSP_NAME) == 0);
127
128         if (cli->cl_import)
129                 sec = sptlrpc_import_sec_ref(cli->cl_import);
130         if (sec == NULL)
131                 goto out;
132
133         if (sec->ps_policy->sp_cops->display)
134                 sec->ps_policy->sp_cops->display(sec, seq);
135
136         sptlrpc_sec_put(sec);
137 out:
138         return 0;
139 }
140
141 LPROC_SEQ_FOPS_RO(sptlrpc_ctxs_lprocfs);
142
143 int sptlrpc_lprocfs_cliobd_attach(struct obd_device *dev)
144 {
145         int     rc;
146
147         if (strcmp(dev->obd_type->typ_name, LUSTRE_OSC_NAME) != 0 &&
148             strcmp(dev->obd_type->typ_name, LUSTRE_MDC_NAME) != 0 &&
149             strcmp(dev->obd_type->typ_name, LUSTRE_MGC_NAME) != 0 &&
150             strcmp(dev->obd_type->typ_name, LUSTRE_LWP_NAME) != 0 &&
151             strcmp(dev->obd_type->typ_name, LUSTRE_OSP_NAME) != 0) {
152                 CERROR("can't register lproc for obd type %s\n",
153                        dev->obd_type->typ_name);
154                 return -EINVAL;
155         }
156
157         rc = ldebugfs_seq_create(dev->obd_debugfs_entry, "srpc_info", 0444,
158                                  &sptlrpc_info_lprocfs_fops, dev);
159         if (rc) {
160                 CERROR("create proc entry srpc_info for %s: %d\n",
161                        dev->obd_name, rc);
162                 return rc;
163         }
164
165         rc = ldebugfs_seq_create(dev->obd_debugfs_entry, "srpc_contexts",
166                                  0444, &sptlrpc_ctxs_lprocfs_fops, dev);
167         if (rc) {
168                 CERROR("create proc entry srpc_contexts for %s: %d\n",
169                        dev->obd_name, rc);
170                 return rc;
171         }
172
173         return 0;
174 }
175 EXPORT_SYMBOL(sptlrpc_lprocfs_cliobd_attach);
176
177 LPROC_SEQ_FOPS_RO(sptlrpc_proc_enc_pool);
178 static struct lprocfs_vars sptlrpc_lprocfs_vars[] = {
179         { .name =       "encrypt_page_pools",
180           .fops =       &sptlrpc_proc_enc_pool_fops     },
181         { NULL }
182 };
183
184 int sptlrpc_lproc_init(void)
185 {
186         int rc;
187
188         LASSERT(sptlrpc_proc_root == NULL);
189
190         sptlrpc_proc_root = lprocfs_register("sptlrpc", proc_lustre_root,
191                                              sptlrpc_lprocfs_vars, NULL);
192         if (IS_ERR(sptlrpc_proc_root)) {
193                 rc = PTR_ERR(sptlrpc_proc_root);
194                 sptlrpc_proc_root = NULL;
195                 return rc;
196         }
197         return 0;
198 }
199
200 void sptlrpc_lproc_fini(void)
201 {
202         if (sptlrpc_proc_root) {
203                 lprocfs_remove(&sptlrpc_proc_root);
204                 sptlrpc_proc_root = NULL;
205         }
206 }