1 /*
2 * Copyright (c) 2000-2003 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18 #include "xfs.h"
19 #include "xfs_fs.h"
20 #include "xfs_bit.h"
21 #include "xfs_log.h"
22 #include "xfs_inum.h"
23 #include "xfs_trans.h"
24 #include "xfs_sb.h"
25 #include "xfs_ag.h"
26 #include "xfs_dir2.h"
27 #include "xfs_alloc.h"
28 #include "xfs_dmapi.h"
29 #include "xfs_quota.h"
30 #include "xfs_mount.h"
31 #include "xfs_bmap_btree.h"
32 #include "xfs_alloc_btree.h"
33 #include "xfs_ialloc_btree.h"
34 #include "xfs_dir2_sf.h"
35 #include "xfs_attr_sf.h"
36 #include "xfs_dinode.h"
37 #include "xfs_inode.h"
38 #include "xfs_ialloc.h"
39 #include "xfs_itable.h"
40 #include "xfs_bmap.h"
41 #include "xfs_btree.h"
42 #include "xfs_rtalloc.h"
43 #include "xfs_error.h"
44 #include "xfs_rw.h"
45 #include "xfs_acl.h"
46 #include "xfs_attr.h"
47 #include "xfs_buf_item.h"
48 #include "xfs_qm.h"
49
50 struct xqmstats xqmstats;
51
52 STATIC int
53 xfs_qm_read_xfsquota(
54 char *buffer,
55 char **start,
56 off_t offset,
57 int count,
58 int *eof,
59 void *data)
60 {
61 int len;
62
63 /* maximum; incore; ratio free to inuse; freelist */
64 len = sprintf(buffer, "%d\t%d\t%d\t%u\n",
65 ndquot,
66 xfs_Gqm? atomic_read(&xfs_Gqm->qm_totaldquots) : 0,
67 xfs_Gqm? xfs_Gqm->qm_dqfree_ratio : 0,
68 xfs_Gqm? xfs_Gqm->qm_dqfreelist.qh_nelems : 0);
69
70 if (offset >= len) {
71 *start = buffer;
72 *eof = 1;
73 return 0;
74 }
75 *start = buffer + offset;
76 if ((len -= offset) > count)
77 return count;
78 *eof = 1;
79
80 return len;
81 }
82
83 STATIC int
84 xfs_qm_read_stats(
85 char *buffer,
86 char **start,
87 off_t offset,
88 int count,
89 int *eof,
90 void *data)
91 {
92 int len;
93
94 /* quota performance statistics */
95 len = sprintf(buffer, "qm %u %u %u %u %u %u %u %u\n",
96 xqmstats.xs_qm_dqreclaims,
97 xqmstats.xs_qm_dqreclaim_misses,
98 xqmstats.xs_qm_dquot_dups,
99 xqmstats.xs_qm_dqcachemisses,
100 xqmstats.xs_qm_dqcachehits,
101 xqmstats.xs_qm_dqwants,
102 xqmstats.xs_qm_dqshake_reclaims,
103 xqmstats.xs_qm_dqinact_reclaims);
104
105 if (offset >= len) {
106 *start = buffer;
107 *eof = 1;
108 return 0;
109 }
110 *start = buffer + offset;
111 if ((len -= offset) > count)
112 return count;
113 *eof = 1;
114
115 return len;
116 }
117
118 void
119 xfs_qm_init_procfs(void)
120 {
121 create_proc_read_entry("fs/xfs/xqmstat", 0, NULL, xfs_qm_read_stats, NULL);
122 create_proc_read_entry("fs/xfs/xqm", 0, NULL, xfs_qm_read_xfsquota, NULL);
123 }
124
125 void
126 xfs_qm_cleanup_procfs(void)
127 {
128 remove_proc_entry("fs/xfs/xqm", NULL);
129 remove_proc_entry("fs/xfs/xqmstat", NULL);
130 }
131
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