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d7e09d03 PT |
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.sun.com/software/products/lustre/docs/GPLv2.pdf | |
19 | * | |
20 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
21 | * CA 95054 USA or visit www.sun.com if you need additional information or | |
22 | * have any questions. | |
23 | * | |
24 | * GPL HEADER END | |
25 | */ | |
26 | /* | |
27 | * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. | |
28 | * Use is subject to license terms. | |
29 | * | |
30 | * Copyright (c) 2011, 2012, Intel Corporation. | |
31 | */ | |
32 | /* | |
33 | * This file is part of Lustre, http://www.lustre.org/ | |
34 | * Lustre is a trademark of Sun Microsystems, Inc. | |
35 | * | |
36 | * lustre/fid/lproc_fid.c | |
37 | * | |
38 | * Lustre Sequence Manager | |
39 | * | |
40 | * Author: Yury Umanets <umka@clusterfs.com> | |
41 | */ | |
42 | ||
43 | #define DEBUG_SUBSYSTEM S_FID | |
44 | ||
9fdaf8c0 GKH |
45 | #include "../../include/linux/libcfs/libcfs.h" |
46 | #include <linux/module.h> | |
d7e09d03 | 47 | |
61566391 GKH |
48 | #include "../include/obd.h" |
49 | #include "../include/obd_class.h" | |
50 | #include "../include/dt_object.h" | |
51 | #include "../include/md_object.h" | |
52 | #include "../include/obd_support.h" | |
53 | #include "../include/lustre_req_layout.h" | |
54 | #include "../include/lustre_fid.h" | |
d7e09d03 PT |
55 | #include "fid_internal.h" |
56 | ||
a1e7e2d4 OD |
57 | /* Format: [0x64BIT_INT - 0x64BIT_INT] + 32 bytes just in case */ |
58 | #define MAX_FID_RANGE_STRLEN (32 + 2 * 2 * sizeof(__u64)) | |
d7e09d03 PT |
59 | /* |
60 | * Note: this function is only used for testing, it is no safe for production | |
61 | * use. | |
62 | */ | |
a1e7e2d4 OD |
63 | static int lprocfs_fid_write_common(const char __user *buffer, size_t count, |
64 | struct lu_seq_range *range) | |
d7e09d03 PT |
65 | { |
66 | struct lu_seq_range tmp; | |
67 | int rc; | |
a1e7e2d4 | 68 | char kernbuf[MAX_FID_RANGE_STRLEN]; |
d7e09d03 PT |
69 | |
70 | LASSERT(range != NULL); | |
71 | ||
a1e7e2d4 OD |
72 | if (count >= sizeof(kernbuf)) |
73 | return -EINVAL; | |
74 | ||
75 | if (copy_from_user(kernbuf, buffer, count)) | |
76 | return -EFAULT; | |
77 | ||
78 | kernbuf[count] = 0; | |
79 | ||
80 | if (count == 5 && strcmp(kernbuf, "clear") == 0) { | |
81 | memset(range, 0, sizeof(*range)); | |
82 | return count; | |
83 | } | |
84 | ||
85 | /* of the form "[0x0000000240000400 - 0x000000028000400]" */ | |
86 | rc = sscanf(kernbuf, "[%llx - %llx]\n", | |
d7e09d03 PT |
87 | (long long unsigned *)&tmp.lsr_start, |
88 | (long long unsigned *)&tmp.lsr_end); | |
a1e7e2d4 OD |
89 | if (!range_is_sane(&tmp) || range_is_zero(&tmp) || |
90 | tmp.lsr_start < range->lsr_start || tmp.lsr_end > range->lsr_end) | |
0a3bdb00 | 91 | return -EINVAL; |
d7e09d03 | 92 | *range = tmp; |
a1e7e2d4 | 93 | return count; |
d7e09d03 PT |
94 | } |
95 | ||
d7e09d03 | 96 | /* Client side procfs stuff */ |
a1e7e2d4 OD |
97 | static ssize_t lprocfs_fid_space_seq_write(struct file *file, |
98 | const char __user *buffer, | |
99 | size_t count, loff_t *off) | |
d7e09d03 | 100 | { |
d1acbe57 | 101 | struct lu_client_seq *seq; |
d7e09d03 | 102 | int rc; |
d7e09d03 | 103 | |
d1acbe57 | 104 | seq = ((struct seq_file *)file->private_data)->private; |
d7e09d03 PT |
105 | LASSERT(seq != NULL); |
106 | ||
107 | mutex_lock(&seq->lcs_mutex); | |
73bb1da6 | 108 | rc = lprocfs_fid_write_common(buffer, count, &seq->lcs_space); |
d7e09d03 PT |
109 | |
110 | if (rc == 0) { | |
111 | CDEBUG(D_INFO, "%s: Space: "DRANGE"\n", | |
112 | seq->lcs_name, PRANGE(&seq->lcs_space)); | |
113 | } | |
114 | ||
115 | mutex_unlock(&seq->lcs_mutex); | |
116 | ||
0a3bdb00 | 117 | return count; |
d7e09d03 PT |
118 | } |
119 | ||
120 | static int | |
73bb1da6 | 121 | lprocfs_fid_space_seq_show(struct seq_file *m, void *unused) |
d7e09d03 | 122 | { |
73bb1da6 | 123 | struct lu_client_seq *seq = (struct lu_client_seq *)m->private; |
d7e09d03 | 124 | int rc; |
d7e09d03 PT |
125 | |
126 | LASSERT(seq != NULL); | |
127 | ||
128 | mutex_lock(&seq->lcs_mutex); | |
73bb1da6 | 129 | rc = seq_printf(m, "["LPX64" - "LPX64"]:%x:%s\n", PRANGE(&seq->lcs_space)); |
d7e09d03 PT |
130 | mutex_unlock(&seq->lcs_mutex); |
131 | ||
0a3bdb00 | 132 | return rc; |
d7e09d03 PT |
133 | } |
134 | ||
a1e7e2d4 OD |
135 | static ssize_t lprocfs_fid_width_seq_write(struct file *file, |
136 | const char __user *buffer, | |
137 | size_t count, loff_t *off) | |
d7e09d03 | 138 | { |
d1acbe57 | 139 | struct lu_client_seq *seq; |
d7e09d03 PT |
140 | __u64 max; |
141 | int rc, val; | |
d7e09d03 | 142 | |
d1acbe57 | 143 | seq = ((struct seq_file *)file->private_data)->private; |
d7e09d03 PT |
144 | LASSERT(seq != NULL); |
145 | ||
d7e09d03 | 146 | rc = lprocfs_write_helper(buffer, count, &val); |
73bb1da6 | 147 | if (rc) |
0a3bdb00 | 148 | return rc; |
d7e09d03 | 149 | |
73bb1da6 | 150 | mutex_lock(&seq->lcs_mutex); |
d7e09d03 PT |
151 | if (seq->lcs_type == LUSTRE_SEQ_DATA) |
152 | max = LUSTRE_DATA_SEQ_MAX_WIDTH; | |
153 | else | |
154 | max = LUSTRE_METADATA_SEQ_MAX_WIDTH; | |
155 | ||
156 | if (val <= max && val > 0) { | |
157 | seq->lcs_width = val; | |
158 | ||
159 | if (rc == 0) { | |
160 | CDEBUG(D_INFO, "%s: Sequence size: "LPU64"\n", | |
161 | seq->lcs_name, seq->lcs_width); | |
162 | } | |
163 | } | |
164 | ||
165 | mutex_unlock(&seq->lcs_mutex); | |
166 | ||
0a3bdb00 | 167 | return count; |
d7e09d03 PT |
168 | } |
169 | ||
170 | static int | |
73bb1da6 | 171 | lprocfs_fid_width_seq_show(struct seq_file *m, void *unused) |
d7e09d03 | 172 | { |
73bb1da6 | 173 | struct lu_client_seq *seq = (struct lu_client_seq *)m->private; |
d7e09d03 | 174 | int rc; |
d7e09d03 PT |
175 | |
176 | LASSERT(seq != NULL); | |
177 | ||
178 | mutex_lock(&seq->lcs_mutex); | |
73bb1da6 | 179 | rc = seq_printf(m, LPU64"\n", seq->lcs_width); |
d7e09d03 PT |
180 | mutex_unlock(&seq->lcs_mutex); |
181 | ||
0a3bdb00 | 182 | return rc; |
d7e09d03 PT |
183 | } |
184 | ||
185 | static int | |
73bb1da6 | 186 | lprocfs_fid_fid_seq_show(struct seq_file *m, void *unused) |
d7e09d03 | 187 | { |
73bb1da6 | 188 | struct lu_client_seq *seq = (struct lu_client_seq *)m->private; |
d7e09d03 | 189 | int rc; |
d7e09d03 PT |
190 | |
191 | LASSERT(seq != NULL); | |
192 | ||
193 | mutex_lock(&seq->lcs_mutex); | |
73bb1da6 | 194 | rc = seq_printf(m, DFID"\n", PFID(&seq->lcs_fid)); |
d7e09d03 PT |
195 | mutex_unlock(&seq->lcs_mutex); |
196 | ||
0a3bdb00 | 197 | return rc; |
d7e09d03 PT |
198 | } |
199 | ||
200 | static int | |
73bb1da6 | 201 | lprocfs_fid_server_seq_show(struct seq_file *m, void *unused) |
d7e09d03 | 202 | { |
73bb1da6 | 203 | struct lu_client_seq *seq = (struct lu_client_seq *)m->private; |
d7e09d03 PT |
204 | struct client_obd *cli; |
205 | int rc; | |
d7e09d03 PT |
206 | |
207 | LASSERT(seq != NULL); | |
208 | ||
209 | if (seq->lcs_exp != NULL) { | |
210 | cli = &seq->lcs_exp->exp_obd->u.cli; | |
73bb1da6 | 211 | rc = seq_printf(m, "%s\n", cli->cl_target_uuid.uuid); |
d7e09d03 | 212 | } else { |
73bb1da6 | 213 | rc = seq_printf(m, "%s\n", seq->lcs_srv->lss_name); |
d7e09d03 | 214 | } |
0a3bdb00 | 215 | return rc; |
d7e09d03 PT |
216 | } |
217 | ||
73bb1da6 PT |
218 | LPROC_SEQ_FOPS(lprocfs_fid_space); |
219 | LPROC_SEQ_FOPS(lprocfs_fid_width); | |
220 | LPROC_SEQ_FOPS_RO(lprocfs_fid_server); | |
221 | LPROC_SEQ_FOPS_RO(lprocfs_fid_fid); | |
d7e09d03 PT |
222 | |
223 | struct lprocfs_vars seq_client_proc_list[] = { | |
73bb1da6 PT |
224 | { "space", &lprocfs_fid_space_fops }, |
225 | { "width", &lprocfs_fid_width_fops }, | |
226 | { "server", &lprocfs_fid_server_fops }, | |
227 | { "fid", &lprocfs_fid_fid_fops }, | |
228 | { NULL } | |
229 | }; |