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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* -*- linux-c -*- */
2
3/* fs/reiserfs/procfs.c */
4
5/*
6 * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
7 */
8
9/* proc info support a la one created by Sizif@Botik.RU for PGC */
10
Linus Torvalds1da177e2005-04-16 15:20:36 -070011#include <linux/module.h>
12#include <linux/time.h>
13#include <linux/seq_file.h>
14#include <asm/uaccess.h>
Al Virof466c6f2012-03-17 01:16:43 -040015#include "reiserfs.h"
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#include <linux/init.h>
17#include <linux/proc_fs.h>
18
Linus Torvalds1da177e2005-04-16 15:20:36 -070019/*
20 * LOCKING:
21 *
Al Viro672fe152013-08-05 17:37:37 +040022 * These guys are evicted from procfs as the very first step in ->kill_sb().
Linus Torvalds1da177e2005-04-16 15:20:36 -070023 *
24 */
25
Al Viro672fe152013-08-05 17:37:37 +040026static int show_version(struct seq_file *m, void *unused)
Linus Torvalds1da177e2005-04-16 15:20:36 -070027{
Al Viro672fe152013-08-05 17:37:37 +040028 struct super_block *sb = m->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -070029 char *format;
Linus Torvaldsbd4c6252005-07-12 20:21:28 -070030
31 if (REISERFS_SB(sb)->s_properties & (1 << REISERFS_3_6)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070032 format = "3.6";
Linus Torvaldsbd4c6252005-07-12 20:21:28 -070033 } else if (REISERFS_SB(sb)->s_properties & (1 << REISERFS_3_5)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -070034 format = "3.5";
35 } else {
36 format = "unknown";
37 }
38
Linus Torvaldsbd4c6252005-07-12 20:21:28 -070039 seq_printf(m, "%s format\twith checks %s\n", format,
Linus Torvalds1da177e2005-04-16 15:20:36 -070040#if defined( CONFIG_REISERFS_CHECK )
Linus Torvaldsbd4c6252005-07-12 20:21:28 -070041 "on"
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#else
Linus Torvaldsbd4c6252005-07-12 20:21:28 -070043 "off"
Linus Torvalds1da177e2005-04-16 15:20:36 -070044#endif
Linus Torvaldsbd4c6252005-07-12 20:21:28 -070045 );
Linus Torvalds1da177e2005-04-16 15:20:36 -070046 return 0;
47}
48
Linus Torvalds1da177e2005-04-16 15:20:36 -070049#define SF( x ) ( r -> x )
50#define SFP( x ) SF( s_proc_info_data.x )
51#define SFPL( x ) SFP( x[ level ] )
52#define SFPF( x ) SFP( scan_bitmap.x )
53#define SFPJ( x ) SFP( journal.x )
54
55#define D2C( x ) le16_to_cpu( x )
56#define D4C( x ) le32_to_cpu( x )
57#define DF( x ) D2C( rs -> s_v1.x )
58#define DFL( x ) D4C( rs -> s_v1.x )
59
60#define objectid_map( s, rs ) (old_format_only (s) ? \
Al Viro3e8962b2005-05-01 08:59:18 -070061 (__le32 *)((struct reiserfs_super_block_v1 *)rs + 1) : \
62 (__le32 *)(rs + 1))
Linus Torvalds1da177e2005-04-16 15:20:36 -070063#define MAP( i ) D4C( objectid_map( sb, rs )[ i ] )
64
65#define DJF( x ) le32_to_cpu( rs -> x )
66#define DJV( x ) le32_to_cpu( s_v1 -> x )
Linus Torvaldsbd4c6252005-07-12 20:21:28 -070067#define DJP( x ) le32_to_cpu( jp -> x )
Linus Torvalds1da177e2005-04-16 15:20:36 -070068#define JF( x ) ( r -> s_journal -> x )
69
Al Viro672fe152013-08-05 17:37:37 +040070static int show_super(struct seq_file *m, void *unused)
Linus Torvalds1da177e2005-04-16 15:20:36 -070071{
Al Viro672fe152013-08-05 17:37:37 +040072 struct super_block *sb = m->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -070073 struct reiserfs_sb_info *r = REISERFS_SB(sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -070074
Linus Torvaldsbd4c6252005-07-12 20:21:28 -070075 seq_printf(m, "state: \t%s\n"
76 "mount options: \t%s%s%s%s%s%s%s%s%s%s%s\n"
77 "gen. counter: \t%i\n"
Linus Torvaldsbd4c6252005-07-12 20:21:28 -070078 "s_disk_reads: \t%i\n"
79 "s_disk_writes: \t%i\n"
80 "s_fix_nodes: \t%i\n"
81 "s_do_balance: \t%i\n"
82 "s_unneeded_left_neighbor: \t%i\n"
83 "s_good_search_by_key_reada: \t%i\n"
84 "s_bmaps: \t%i\n"
85 "s_bmaps_without_search: \t%i\n"
86 "s_direct2indirect: \t%i\n"
87 "s_indirect2direct: \t%i\n"
88 "\n"
89 "max_hash_collisions: \t%i\n"
90 "breads: \t%lu\n"
91 "bread_misses: \t%lu\n"
92 "search_by_key: \t%lu\n"
93 "search_by_key_fs_changed: \t%lu\n"
94 "search_by_key_restarted: \t%lu\n"
95 "insert_item_restarted: \t%lu\n"
96 "paste_into_item_restarted: \t%lu\n"
97 "cut_from_item_restarted: \t%lu\n"
98 "delete_solid_item_restarted: \t%lu\n"
99 "delete_item_restarted: \t%lu\n"
100 "leaked_oid: \t%lu\n"
101 "leaves_removable: \t%lu\n",
102 SF(s_mount_state) == REISERFS_VALID_FS ?
103 "REISERFS_VALID_FS" : "REISERFS_ERROR_FS",
104 reiserfs_r5_hash(sb) ? "FORCE_R5 " : "",
105 reiserfs_rupasov_hash(sb) ? "FORCE_RUPASOV " : "",
106 reiserfs_tea_hash(sb) ? "FORCE_TEA " : "",
107 reiserfs_hash_detect(sb) ? "DETECT_HASH " : "",
108 reiserfs_no_border(sb) ? "NO_BORDER " : "BORDER ",
109 reiserfs_no_unhashed_relocation(sb) ?
110 "NO_UNHASHED_RELOCATION " : "",
111 reiserfs_hashed_relocation(sb) ? "UNHASHED_RELOCATION " : "",
112 reiserfs_test4(sb) ? "TEST4 " : "",
113 have_large_tails(sb) ? "TAILS " : have_small_tails(sb) ?
114 "SMALL_TAILS " : "NO_TAILS ",
115 replay_only(sb) ? "REPLAY_ONLY " : "",
116 convert_reiserfs(sb) ? "CONV " : "",
Pekka Enbergd739b422006-02-01 03:06:43 -0800117 atomic_read(&r->s_generation_counter),
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700118 SF(s_disk_reads), SF(s_disk_writes), SF(s_fix_nodes),
119 SF(s_do_balance), SF(s_unneeded_left_neighbor),
120 SF(s_good_search_by_key_reada), SF(s_bmaps),
121 SF(s_bmaps_without_search), SF(s_direct2indirect),
122 SF(s_indirect2direct), SFP(max_hash_collisions), SFP(breads),
123 SFP(bread_miss), SFP(search_by_key),
124 SFP(search_by_key_fs_changed), SFP(search_by_key_restarted),
125 SFP(insert_item_restarted), SFP(paste_into_item_restarted),
126 SFP(cut_from_item_restarted),
127 SFP(delete_solid_item_restarted), SFP(delete_item_restarted),
128 SFP(leaked_oid), SFP(leaves_removable));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129
130 return 0;
131}
132
Al Viro672fe152013-08-05 17:37:37 +0400133static int show_per_level(struct seq_file *m, void *unused)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134{
Al Viro672fe152013-08-05 17:37:37 +0400135 struct super_block *sb = m->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136 struct reiserfs_sb_info *r = REISERFS_SB(sb);
137 int level;
138
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700139 seq_printf(m, "level\t"
140 " balances"
141 " [sbk: reads"
142 " fs_changed"
143 " restarted]"
144 " free space"
145 " items"
146 " can_remove"
147 " lnum"
148 " rnum"
149 " lbytes"
150 " rbytes"
151 " get_neig"
152 " get_neig_res" " need_l_neig" " need_r_neig" "\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700154 for (level = 0; level < MAX_HEIGHT; ++level) {
155 seq_printf(m, "%i\t"
156 " %12lu"
157 " %12lu"
158 " %12lu"
159 " %12lu"
160 " %12lu"
161 " %12lu"
162 " %12lu"
163 " %12li"
164 " %12li"
165 " %12li"
166 " %12li"
167 " %12lu"
168 " %12lu"
169 " %12lu"
170 " %12lu"
171 "\n",
172 level,
173 SFPL(balance_at),
174 SFPL(sbk_read_at),
175 SFPL(sbk_fs_changed),
176 SFPL(sbk_restarted),
177 SFPL(free_at),
178 SFPL(items_at),
179 SFPL(can_node_be_removed),
180 SFPL(lnum),
181 SFPL(rnum),
182 SFPL(lbytes),
183 SFPL(rbytes),
184 SFPL(get_neighbors),
185 SFPL(get_neighbors_restart),
186 SFPL(need_l_neighbor), SFPL(need_r_neighbor)
187 );
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188 }
189 return 0;
190}
191
Al Viro672fe152013-08-05 17:37:37 +0400192static int show_bitmap(struct seq_file *m, void *unused)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193{
Al Viro672fe152013-08-05 17:37:37 +0400194 struct super_block *sb = m->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 struct reiserfs_sb_info *r = REISERFS_SB(sb);
196
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700197 seq_printf(m, "free_block: %lu\n"
198 " scan_bitmap:"
199 " wait"
200 " bmap"
201 " retry"
202 " stolen"
203 " journal_hint"
204 "journal_nohint"
205 "\n"
206 " %14lu"
207 " %14lu"
208 " %14lu"
209 " %14lu"
210 " %14lu"
211 " %14lu"
212 " %14lu"
213 "\n",
214 SFP(free_block),
215 SFPF(call),
216 SFPF(wait),
217 SFPF(bmap),
218 SFPF(retry),
219 SFPF(stolen),
220 SFPF(in_journal_hint), SFPF(in_journal_nohint));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221
222 return 0;
223}
224
Al Viro672fe152013-08-05 17:37:37 +0400225static int show_on_disk_super(struct seq_file *m, void *unused)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226{
Al Viro672fe152013-08-05 17:37:37 +0400227 struct super_block *sb = m->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228 struct reiserfs_sb_info *sb_info = REISERFS_SB(sb);
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700229 struct reiserfs_super_block *rs = sb_info->s_rs;
230 int hash_code = DFL(s_hash_function_code);
231 __u32 flags = DJF(s_flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700233 seq_printf(m, "block_count: \t%i\n"
234 "free_blocks: \t%i\n"
235 "root_block: \t%i\n"
236 "blocksize: \t%i\n"
237 "oid_maxsize: \t%i\n"
238 "oid_cursize: \t%i\n"
239 "umount_state: \t%i\n"
240 "magic: \t%10.10s\n"
241 "fs_state: \t%i\n"
242 "hash: \t%s\n"
243 "tree_height: \t%i\n"
244 "bmap_nr: \t%i\n"
245 "version: \t%i\n"
246 "flags: \t%x[%s]\n"
247 "reserved_for_journal: \t%i\n",
248 DFL(s_block_count),
249 DFL(s_free_blocks),
250 DFL(s_root_block),
251 DF(s_blocksize),
252 DF(s_oid_maxsize),
253 DF(s_oid_cursize),
254 DF(s_umount_state),
255 rs->s_v1.s_magic,
256 DF(s_fs_state),
257 hash_code == TEA_HASH ? "tea" :
258 (hash_code == YURA_HASH) ? "rupasov" :
259 (hash_code == R5_HASH) ? "r5" :
260 (hash_code == UNSET_HASH) ? "unset" : "unknown",
261 DF(s_tree_height),
262 DF(s_bmap_nr),
263 DF(s_version), flags, (flags & reiserfs_attrs_cleared)
264 ? "attrs_cleared" : "", DF(s_reserved_for_journal));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265
266 return 0;
267}
268
Al Viro672fe152013-08-05 17:37:37 +0400269static int show_oidmap(struct seq_file *m, void *unused)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270{
Al Viro672fe152013-08-05 17:37:37 +0400271 struct super_block *sb = m->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272 struct reiserfs_sb_info *sb_info = REISERFS_SB(sb);
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700273 struct reiserfs_super_block *rs = sb_info->s_rs;
274 unsigned int mapsize = le16_to_cpu(rs->s_v1.s_oid_cursize);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275 unsigned long total_used = 0;
276 int i;
277
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700278 for (i = 0; i < mapsize; ++i) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279 __u32 right;
280
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700281 right = (i == mapsize - 1) ? MAX_KEY_OBJECTID : MAP(i + 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282 seq_printf(m, "%s: [ %x .. %x )\n",
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700283 (i & 1) ? "free" : "used", MAP(i), right);
284 if (!(i & 1)) {
285 total_used += right - MAP(i);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 }
287 }
288#if defined( REISERFS_USE_OIDMAPF )
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700289 if (sb_info->oidmap.use_file && (sb_info->oidmap.mapf != NULL)) {
Al Viro496ad9a2013-01-23 17:07:38 -0500290 loff_t size = file_inode(sb_info->oidmap.mapf)->i_size;
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700291 total_used += size / sizeof(reiserfs_oidinterval_d_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 }
293#endif
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700294 seq_printf(m, "total: \t%i [%i/%i] used: %lu [exact]\n",
295 mapsize,
296 mapsize, le16_to_cpu(rs->s_v1.s_oid_maxsize), total_used);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297 return 0;
298}
299
Al Viro672fe152013-08-05 17:37:37 +0400300static int show_journal(struct seq_file *m, void *unused)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301{
Al Viro672fe152013-08-05 17:37:37 +0400302 struct super_block *sb = m->private;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303 struct reiserfs_sb_info *r = REISERFS_SB(sb);
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700304 struct reiserfs_super_block *rs = r->s_rs;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305 struct journal_params *jp = &rs->s_v1.s_journal;
306 char b[BDEVNAME_SIZE];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700308 seq_printf(m, /* on-disk fields */
309 "jp_journal_1st_block: \t%i\n"
310 "jp_journal_dev: \t%s[%x]\n"
311 "jp_journal_size: \t%i\n"
312 "jp_journal_trans_max: \t%i\n"
313 "jp_journal_magic: \t%i\n"
314 "jp_journal_max_batch: \t%i\n"
315 "jp_journal_max_commit_age: \t%i\n"
316 "jp_journal_max_trans_age: \t%i\n"
317 /* incore fields */
318 "j_1st_reserved_block: \t%i\n"
319 "j_state: \t%li\n"
Jeff Mahoney600ed412009-03-30 14:02:17 -0400320 "j_trans_id: \t%u\n"
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700321 "j_mount_id: \t%lu\n"
322 "j_start: \t%lu\n"
323 "j_len: \t%lu\n"
324 "j_len_alloc: \t%lu\n"
325 "j_wcount: \t%i\n"
326 "j_bcount: \t%lu\n"
327 "j_first_unflushed_offset: \t%lu\n"
Jeff Mahoney600ed412009-03-30 14:02:17 -0400328 "j_last_flush_trans_id: \t%u\n"
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700329 "j_trans_start_time: \t%li\n"
330 "j_list_bitmap_index: \t%i\n"
331 "j_must_wait: \t%i\n"
332 "j_next_full_flush: \t%i\n"
333 "j_next_async_flush: \t%i\n"
334 "j_cnode_used: \t%i\n" "j_cnode_free: \t%i\n" "\n"
335 /* reiserfs_proc_info_data_t.journal fields */
336 "in_journal: \t%12lu\n"
337 "in_journal_bitmap: \t%12lu\n"
338 "in_journal_reusable: \t%12lu\n"
339 "lock_journal: \t%12lu\n"
340 "lock_journal_wait: \t%12lu\n"
341 "journal_begin: \t%12lu\n"
342 "journal_relock_writers: \t%12lu\n"
343 "journal_relock_wcount: \t%12lu\n"
344 "mark_dirty: \t%12lu\n"
345 "mark_dirty_already: \t%12lu\n"
346 "mark_dirty_notjournal: \t%12lu\n"
347 "restore_prepared: \t%12lu\n"
348 "prepare: \t%12lu\n"
349 "prepare_retry: \t%12lu\n",
350 DJP(jp_journal_1st_block),
351 bdevname(SB_JOURNAL(sb)->j_dev_bd, b),
352 DJP(jp_journal_dev),
353 DJP(jp_journal_size),
354 DJP(jp_journal_trans_max),
355 DJP(jp_journal_magic),
356 DJP(jp_journal_max_batch),
357 SB_JOURNAL(sb)->j_max_commit_age,
358 DJP(jp_journal_max_trans_age),
359 JF(j_1st_reserved_block),
360 JF(j_state),
361 JF(j_trans_id),
362 JF(j_mount_id),
363 JF(j_start),
364 JF(j_len),
365 JF(j_len_alloc),
366 atomic_read(&r->s_journal->j_wcount),
367 JF(j_bcount),
368 JF(j_first_unflushed_offset),
369 JF(j_last_flush_trans_id),
370 JF(j_trans_start_time),
371 JF(j_list_bitmap_index),
372 JF(j_must_wait),
373 JF(j_next_full_flush),
374 JF(j_next_async_flush),
375 JF(j_cnode_used),
376 JF(j_cnode_free),
377 SFPJ(in_journal),
378 SFPJ(in_journal_bitmap),
379 SFPJ(in_journal_reusable),
380 SFPJ(lock_journal),
381 SFPJ(lock_journal_wait),
382 SFPJ(journal_being),
383 SFPJ(journal_relock_writers),
384 SFPJ(journal_relock_wcount),
385 SFPJ(mark_dirty),
386 SFPJ(mark_dirty_already),
387 SFPJ(mark_dirty_notjournal),
388 SFPJ(restore_prepared), SFPJ(prepare), SFPJ(prepare_retry)
389 );
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390 return 0;
391}
392
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393static int r_open(struct inode *inode, struct file *file)
394{
Al Viro672fe152013-08-05 17:37:37 +0400395 return single_open(file, PDE_DATA(inode),
396 proc_get_parent_data(inode));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397}
398
Arjan van de Ven4b6f5d22006-03-28 01:56:42 -0800399static const struct file_operations r_file_operations = {
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700400 .open = r_open,
401 .read = seq_read,
402 .llseek = seq_lseek,
Al Viro672fe152013-08-05 17:37:37 +0400403 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404};
405
406static struct proc_dir_entry *proc_info_root = NULL;
407static const char proc_info_root_name[] = "fs/reiserfs";
408
409static void add_file(struct super_block *sb, char *name,
Al Viro672fe152013-08-05 17:37:37 +0400410 int (*func) (struct seq_file *, void *))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411{
Denis V. Lunev19b4fc52008-04-29 01:02:09 -0700412 proc_create_data(name, 0, REISERFS_SB(sb)->procdir,
413 &r_file_operations, func);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414}
415
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700416int reiserfs_proc_info_init(struct super_block *sb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417{
Jeff Mahoney6fbe82a2006-07-14 00:24:22 -0700418 char b[BDEVNAME_SIZE];
419 char *s;
420
421 /* Some block devices use /'s */
422 strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE);
423 s = strchr(b, '/');
424 if (s)
425 *s = '!';
426
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700427 spin_lock_init(&__PINFO(sb).lock);
David Howells270b5ac2013-04-12 02:48:30 +0100428 REISERFS_SB(sb)->procdir = proc_mkdir_data(b, 0, proc_info_root, sb);
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700429 if (REISERFS_SB(sb)->procdir) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 add_file(sb, "version", show_version);
431 add_file(sb, "super", show_super);
432 add_file(sb, "per-level", show_per_level);
433 add_file(sb, "bitmap", show_bitmap);
434 add_file(sb, "on-disk-super", show_on_disk_super);
435 add_file(sb, "oidmap", show_oidmap);
436 add_file(sb, "journal", show_journal);
437 return 0;
438 }
Jeff Mahoney45b03d52009-03-30 14:02:21 -0400439 reiserfs_warning(sb, "cannot create /proc/%s/%s",
Jeff Mahoney6fbe82a2006-07-14 00:24:22 -0700440 proc_info_root_name, b);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 return 1;
442}
443
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700444int reiserfs_proc_info_done(struct super_block *sb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445{
446 struct proc_dir_entry *de = REISERFS_SB(sb)->procdir;
447 if (de) {
Al Viro121daf52013-03-30 20:16:20 -0400448 char b[BDEVNAME_SIZE];
449 char *s;
450
451 /* Some block devices use /'s */
452 strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE);
453 s = strchr(b, '/');
454 if (s)
455 *s = '!';
456
457 remove_proc_subtree(b, proc_info_root);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458 REISERFS_SB(sb)->procdir = NULL;
459 }
460 return 0;
461}
462
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700463int reiserfs_proc_info_global_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464{
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700465 if (proc_info_root == NULL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466 proc_info_root = proc_mkdir(proc_info_root_name, NULL);
Alexey Dobriyan99b76232009-03-25 22:48:06 +0300467 if (!proc_info_root) {
Jeff Mahoney45b03d52009-03-30 14:02:21 -0400468 reiserfs_warning(NULL, "cannot create /proc/%s",
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700469 proc_info_root_name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470 return 1;
471 }
472 }
473 return 0;
474}
475
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700476int reiserfs_proc_info_global_done(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700477{
Linus Torvaldsbd4c6252005-07-12 20:21:28 -0700478 if (proc_info_root != NULL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479 proc_info_root = NULL;
480 remove_proc_entry(proc_info_root_name, NULL);
481 }
482 return 0;
483}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485 * Revision 1.1.8.2 2001/07/15 17:08:42 god
486 * . use get_super() in procfs.c
487 * . remove remove_save_link() from reiserfs_do_truncate()
488 *
489 * I accept terms and conditions stated in the Legal Agreement
490 * (available at http://www.namesys.com/legalese.html)
491 *
492 * Revision 1.1.8.1 2001/07/11 16:48:50 god
493 * proc info support
494 *
495 * I accept terms and conditions stated in the Legal Agreement
496 * (available at http://www.namesys.com/legalese.html)
497 *
498 */
499
Jeff Mahoney0222e652009-03-30 14:02:44 -0400500/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 * Make Linus happy.
502 * Local variables:
503 * c-indentation-style: "K&R"
504 * mode-name: "LC"
505 * c-basic-offset: 8
506 * tab-width: 8
507 * End:
508 */