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14 * in the LICENSE file that accompanied this code).
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27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
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33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/fid/lproc_fid.c
38 * Lustre Sequence Manager
40 * Author: Yury Umanets <umka@clusterfs.com>
43 #define DEBUG_SUBSYSTEM S_FID
45 #include "../../include/linux/libcfs/libcfs.h"
46 #include <linux/module.h>
48 #include "../include/obd.h"
49 #include "../include/obd_class.h"
50 #include "../include/dt_object.h"
51 #include "../include/obd_support.h"
52 #include "../include/lustre_req_layout.h"
53 #include "../include/lustre_fid.h"
54 #include "fid_internal.h"
56 /* Format: [0x64BIT_INT - 0x64BIT_INT] + 32 bytes just in case */
57 #define MAX_FID_RANGE_STRLEN (32 + 2 * 2 * sizeof(__u64))
59 * Note: this function is only used for testing, it is no safe for production
62 static int lprocfs_fid_write_common(const char __user *buffer, size_t count,
63 struct lu_seq_range *range)
65 struct lu_seq_range tmp;
67 char kernbuf[MAX_FID_RANGE_STRLEN];
69 LASSERT(range != NULL);
71 if (count >= sizeof(kernbuf))
74 if (copy_from_user(kernbuf, buffer, count))
79 if (count == 5 && strcmp(kernbuf, "clear") == 0) {
80 memset(range, 0, sizeof(*range));
84 /* of the form "[0x0000000240000400 - 0x000000028000400]" */
85 rc = sscanf(kernbuf, "[%llx - %llx]\n",
86 (unsigned long long *)&tmp.lsr_start,
87 (unsigned long long *)&tmp.lsr_end);
88 if (!range_is_sane(&tmp) || range_is_zero(&tmp) ||
89 tmp.lsr_start < range->lsr_start || tmp.lsr_end > range->lsr_end)
95 /* Client side procfs stuff */
96 static ssize_t lprocfs_fid_space_seq_write(struct file *file,
97 const char __user *buffer,
98 size_t count, loff_t *off)
100 struct lu_client_seq *seq;
103 seq = ((struct seq_file *)file->private_data)->private;
104 LASSERT(seq != NULL);
106 mutex_lock(&seq->lcs_mutex);
107 rc = lprocfs_fid_write_common(buffer, count, &seq->lcs_space);
110 CDEBUG(D_INFO, "%s: Space: "DRANGE"\n",
111 seq->lcs_name, PRANGE(&seq->lcs_space));
114 mutex_unlock(&seq->lcs_mutex);
120 lprocfs_fid_space_seq_show(struct seq_file *m, void *unused)
122 struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
124 LASSERT(seq != NULL);
126 mutex_lock(&seq->lcs_mutex);
127 seq_printf(m, "[%#llx - %#llx]:%x:%s\n", PRANGE(&seq->lcs_space));
128 mutex_unlock(&seq->lcs_mutex);
133 static ssize_t lprocfs_fid_width_seq_write(struct file *file,
134 const char __user *buffer,
135 size_t count, loff_t *off)
137 struct lu_client_seq *seq;
141 seq = ((struct seq_file *)file->private_data)->private;
142 LASSERT(seq != NULL);
144 rc = lprocfs_write_helper(buffer, count, &val);
148 mutex_lock(&seq->lcs_mutex);
149 if (seq->lcs_type == LUSTRE_SEQ_DATA)
150 max = LUSTRE_DATA_SEQ_MAX_WIDTH;
152 max = LUSTRE_METADATA_SEQ_MAX_WIDTH;
154 if (val <= max && val > 0) {
155 seq->lcs_width = val;
158 CDEBUG(D_INFO, "%s: Sequence size: %llu\n",
159 seq->lcs_name, seq->lcs_width);
163 mutex_unlock(&seq->lcs_mutex);
169 lprocfs_fid_width_seq_show(struct seq_file *m, void *unused)
171 struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
173 LASSERT(seq != NULL);
175 mutex_lock(&seq->lcs_mutex);
176 seq_printf(m, "%llu\n", seq->lcs_width);
177 mutex_unlock(&seq->lcs_mutex);
183 lprocfs_fid_fid_seq_show(struct seq_file *m, void *unused)
185 struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
187 LASSERT(seq != NULL);
189 mutex_lock(&seq->lcs_mutex);
190 seq_printf(m, DFID "\n", PFID(&seq->lcs_fid));
191 mutex_unlock(&seq->lcs_mutex);
197 lprocfs_fid_server_seq_show(struct seq_file *m, void *unused)
199 struct lu_client_seq *seq = (struct lu_client_seq *)m->private;
200 struct client_obd *cli;
202 LASSERT(seq != NULL);
204 if (seq->lcs_exp != NULL) {
205 cli = &seq->lcs_exp->exp_obd->u.cli;
206 seq_printf(m, "%s\n", cli->cl_target_uuid.uuid);
208 seq_printf(m, "%s\n", seq->lcs_srv->lss_name);
214 LPROC_SEQ_FOPS(lprocfs_fid_space);
215 LPROC_SEQ_FOPS(lprocfs_fid_width);
216 LPROC_SEQ_FOPS_RO(lprocfs_fid_server);
217 LPROC_SEQ_FOPS_RO(lprocfs_fid_fid);
219 struct lprocfs_vars seq_client_proc_list[] = {
220 { "space", &lprocfs_fid_space_fops },
221 { "width", &lprocfs_fid_width_fops },
222 { "server", &lprocfs_fid_server_fops },
223 { "fid", &lprocfs_fid_fid_fops },