Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* -*- 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 | |
| 11 | /* $Id: procfs.c,v 1.1.8.2 2001/07/15 17:08:42 god Exp $ */ |
| 12 | |
| 13 | #include <linux/config.h> |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/time.h> |
| 16 | #include <linux/seq_file.h> |
| 17 | #include <asm/uaccess.h> |
| 18 | #include <linux/reiserfs_fs.h> |
| 19 | #include <linux/reiserfs_fs_sb.h> |
| 20 | #include <linux/smp_lock.h> |
| 21 | #include <linux/init.h> |
| 22 | #include <linux/proc_fs.h> |
| 23 | |
| 24 | #if defined( REISERFS_PROC_INFO ) |
| 25 | |
| 26 | /* |
| 27 | * LOCKING: |
| 28 | * |
| 29 | * We rely on new Alexander Viro's super-block locking. |
| 30 | * |
| 31 | */ |
| 32 | |
| 33 | static int show_version(struct seq_file *m, struct super_block *sb) |
| 34 | { |
| 35 | char *format; |
| 36 | |
| 37 | if ( REISERFS_SB(sb)->s_properties & (1 << REISERFS_3_6) ) { |
| 38 | format = "3.6"; |
| 39 | } else if ( REISERFS_SB(sb)->s_properties & (1 << REISERFS_3_5) ) { |
| 40 | format = "3.5"; |
| 41 | } else { |
| 42 | format = "unknown"; |
| 43 | } |
| 44 | |
| 45 | seq_printf(m, "%s format\twith checks %s\n", |
| 46 | format, |
| 47 | #if defined( CONFIG_REISERFS_CHECK ) |
| 48 | "on" |
| 49 | #else |
| 50 | "off" |
| 51 | #endif |
| 52 | ); |
| 53 | return 0; |
| 54 | } |
| 55 | |
| 56 | int reiserfs_global_version_in_proc( char *buffer, char **start, off_t offset, |
| 57 | int count, int *eof, void *data ) |
| 58 | { |
| 59 | *start = buffer; |
| 60 | *eof = 1; |
| 61 | return 0; |
| 62 | } |
| 63 | |
| 64 | #define SF( x ) ( r -> x ) |
| 65 | #define SFP( x ) SF( s_proc_info_data.x ) |
| 66 | #define SFPL( x ) SFP( x[ level ] ) |
| 67 | #define SFPF( x ) SFP( scan_bitmap.x ) |
| 68 | #define SFPJ( x ) SFP( journal.x ) |
| 69 | |
| 70 | #define D2C( x ) le16_to_cpu( x ) |
| 71 | #define D4C( x ) le32_to_cpu( x ) |
| 72 | #define DF( x ) D2C( rs -> s_v1.x ) |
| 73 | #define DFL( x ) D4C( rs -> s_v1.x ) |
| 74 | |
| 75 | #define objectid_map( s, rs ) (old_format_only (s) ? \ |
| 76 | (__u32 *)((struct reiserfs_super_block_v1 *)rs + 1) : \ |
| 77 | (__u32 *)(rs + 1)) |
| 78 | #define MAP( i ) D4C( objectid_map( sb, rs )[ i ] ) |
| 79 | |
| 80 | #define DJF( x ) le32_to_cpu( rs -> x ) |
| 81 | #define DJV( x ) le32_to_cpu( s_v1 -> x ) |
| 82 | #define DJP( x ) le32_to_cpu( jp -> x ) |
| 83 | #define JF( x ) ( r -> s_journal -> x ) |
| 84 | |
| 85 | static int show_super(struct seq_file *m, struct super_block *sb) |
| 86 | { |
| 87 | struct reiserfs_sb_info *r = REISERFS_SB(sb); |
| 88 | |
| 89 | seq_printf(m, "state: \t%s\n" |
| 90 | "mount options: \t%s%s%s%s%s%s%s%s%s%s%s\n" |
| 91 | "gen. counter: \t%i\n" |
| 92 | "s_kmallocs: \t%i\n" |
| 93 | "s_disk_reads: \t%i\n" |
| 94 | "s_disk_writes: \t%i\n" |
| 95 | "s_fix_nodes: \t%i\n" |
| 96 | "s_do_balance: \t%i\n" |
| 97 | "s_unneeded_left_neighbor: \t%i\n" |
| 98 | "s_good_search_by_key_reada: \t%i\n" |
| 99 | "s_bmaps: \t%i\n" |
| 100 | "s_bmaps_without_search: \t%i\n" |
| 101 | "s_direct2indirect: \t%i\n" |
| 102 | "s_indirect2direct: \t%i\n" |
| 103 | "\n" |
| 104 | "max_hash_collisions: \t%i\n" |
| 105 | |
| 106 | "breads: \t%lu\n" |
| 107 | "bread_misses: \t%lu\n" |
| 108 | |
| 109 | "search_by_key: \t%lu\n" |
| 110 | "search_by_key_fs_changed: \t%lu\n" |
| 111 | "search_by_key_restarted: \t%lu\n" |
| 112 | |
| 113 | "insert_item_restarted: \t%lu\n" |
| 114 | "paste_into_item_restarted: \t%lu\n" |
| 115 | "cut_from_item_restarted: \t%lu\n" |
| 116 | "delete_solid_item_restarted: \t%lu\n" |
| 117 | "delete_item_restarted: \t%lu\n" |
| 118 | |
| 119 | "leaked_oid: \t%lu\n" |
| 120 | "leaves_removable: \t%lu\n", |
| 121 | |
| 122 | SF( s_mount_state ) == REISERFS_VALID_FS ? |
| 123 | "REISERFS_VALID_FS" : "REISERFS_ERROR_FS", |
| 124 | reiserfs_r5_hash( sb ) ? "FORCE_R5 " : "", |
| 125 | reiserfs_rupasov_hash( sb ) ? "FORCE_RUPASOV " : "", |
| 126 | reiserfs_tea_hash( sb ) ? "FORCE_TEA " : "", |
| 127 | reiserfs_hash_detect( sb ) ? "DETECT_HASH " : "", |
| 128 | reiserfs_no_border( sb ) ? "NO_BORDER " : "BORDER ", |
| 129 | reiserfs_no_unhashed_relocation( sb ) ? "NO_UNHASHED_RELOCATION " : "", |
| 130 | reiserfs_hashed_relocation( sb ) ? "UNHASHED_RELOCATION " : "", |
| 131 | reiserfs_test4( sb ) ? "TEST4 " : "", |
| 132 | have_large_tails( sb ) ? "TAILS " : have_small_tails(sb)?"SMALL_TAILS ":"NO_TAILS ", |
| 133 | replay_only( sb ) ? "REPLAY_ONLY " : "", |
| 134 | convert_reiserfs( sb ) ? "CONV " : "", |
| 135 | |
| 136 | atomic_read( &r -> s_generation_counter ), |
| 137 | SF( s_kmallocs ), |
| 138 | SF( s_disk_reads ), |
| 139 | SF( s_disk_writes ), |
| 140 | SF( s_fix_nodes ), |
| 141 | SF( s_do_balance ), |
| 142 | SF( s_unneeded_left_neighbor ), |
| 143 | SF( s_good_search_by_key_reada ), |
| 144 | SF( s_bmaps ), |
| 145 | SF( s_bmaps_without_search ), |
| 146 | SF( s_direct2indirect ), |
| 147 | SF( s_indirect2direct ), |
| 148 | SFP( max_hash_collisions ), |
| 149 | SFP( breads ), |
| 150 | SFP( bread_miss ), |
| 151 | SFP( search_by_key ), |
| 152 | SFP( search_by_key_fs_changed ), |
| 153 | SFP( search_by_key_restarted ), |
| 154 | |
| 155 | SFP( insert_item_restarted ), |
| 156 | SFP( paste_into_item_restarted ), |
| 157 | SFP( cut_from_item_restarted ), |
| 158 | SFP( delete_solid_item_restarted ), |
| 159 | SFP( delete_item_restarted ), |
| 160 | |
| 161 | SFP( leaked_oid ), |
| 162 | SFP( leaves_removable ) ); |
| 163 | |
| 164 | return 0; |
| 165 | } |
| 166 | |
| 167 | static int show_per_level(struct seq_file *m, struct super_block *sb) |
| 168 | { |
| 169 | struct reiserfs_sb_info *r = REISERFS_SB(sb); |
| 170 | int level; |
| 171 | |
| 172 | seq_printf(m, "level\t" |
| 173 | " balances" |
| 174 | " [sbk: reads" |
| 175 | " fs_changed" |
| 176 | " restarted]" |
| 177 | " free space" |
| 178 | " items" |
| 179 | " can_remove" |
| 180 | " lnum" |
| 181 | " rnum" |
| 182 | " lbytes" |
| 183 | " rbytes" |
| 184 | " get_neig" |
| 185 | " get_neig_res" |
| 186 | " need_l_neig" |
| 187 | " need_r_neig" |
| 188 | "\n" |
| 189 | |
| 190 | ); |
| 191 | |
| 192 | for( level = 0 ; level < MAX_HEIGHT ; ++ level ) { |
| 193 | seq_printf(m, "%i\t" |
| 194 | " %12lu" |
| 195 | " %12lu" |
| 196 | " %12lu" |
| 197 | " %12lu" |
| 198 | " %12lu" |
| 199 | " %12lu" |
| 200 | " %12lu" |
| 201 | " %12li" |
| 202 | " %12li" |
| 203 | " %12li" |
| 204 | " %12li" |
| 205 | " %12lu" |
| 206 | " %12lu" |
| 207 | " %12lu" |
| 208 | " %12lu" |
| 209 | "\n", |
| 210 | level, |
| 211 | SFPL( balance_at ), |
| 212 | SFPL( sbk_read_at ), |
| 213 | SFPL( sbk_fs_changed ), |
| 214 | SFPL( sbk_restarted ), |
| 215 | SFPL( free_at ), |
| 216 | SFPL( items_at ), |
| 217 | SFPL( can_node_be_removed ), |
| 218 | SFPL( lnum ), |
| 219 | SFPL( rnum ), |
| 220 | SFPL( lbytes ), |
| 221 | SFPL( rbytes ), |
| 222 | SFPL( get_neighbors ), |
| 223 | SFPL( get_neighbors_restart ), |
| 224 | SFPL( need_l_neighbor ), |
| 225 | SFPL( need_r_neighbor ) |
| 226 | ); |
| 227 | } |
| 228 | return 0; |
| 229 | } |
| 230 | |
| 231 | static int show_bitmap(struct seq_file *m, struct super_block *sb) |
| 232 | { |
| 233 | struct reiserfs_sb_info *r = REISERFS_SB(sb); |
| 234 | |
| 235 | seq_printf(m, "free_block: %lu\n" |
| 236 | " scan_bitmap:" |
| 237 | " wait" |
| 238 | " bmap" |
| 239 | " retry" |
| 240 | " stolen" |
| 241 | " journal_hint" |
| 242 | "journal_nohint" |
| 243 | "\n" |
| 244 | " %14lu" |
| 245 | " %14lu" |
| 246 | " %14lu" |
| 247 | " %14lu" |
| 248 | " %14lu" |
| 249 | " %14lu" |
| 250 | " %14lu" |
| 251 | "\n", |
| 252 | SFP( free_block ), |
| 253 | SFPF( call ), |
| 254 | SFPF( wait ), |
| 255 | SFPF( bmap ), |
| 256 | SFPF( retry ), |
| 257 | SFPF( stolen ), |
| 258 | SFPF( in_journal_hint ), |
| 259 | SFPF( in_journal_nohint ) ); |
| 260 | |
| 261 | return 0; |
| 262 | } |
| 263 | |
| 264 | static int show_on_disk_super(struct seq_file *m, struct super_block *sb) |
| 265 | { |
| 266 | struct reiserfs_sb_info *sb_info = REISERFS_SB(sb); |
| 267 | struct reiserfs_super_block *rs = sb_info -> s_rs; |
| 268 | int hash_code = DFL( s_hash_function_code ); |
| 269 | __u32 flags = DJF( s_flags ); |
| 270 | |
| 271 | seq_printf(m, "block_count: \t%i\n" |
| 272 | "free_blocks: \t%i\n" |
| 273 | "root_block: \t%i\n" |
| 274 | "blocksize: \t%i\n" |
| 275 | "oid_maxsize: \t%i\n" |
| 276 | "oid_cursize: \t%i\n" |
| 277 | "umount_state: \t%i\n" |
| 278 | "magic: \t%10.10s\n" |
| 279 | "fs_state: \t%i\n" |
| 280 | "hash: \t%s\n" |
| 281 | "tree_height: \t%i\n" |
| 282 | "bmap_nr: \t%i\n" |
| 283 | "version: \t%i\n" |
| 284 | "flags: \t%x[%s]\n" |
| 285 | "reserved_for_journal: \t%i\n", |
| 286 | |
| 287 | DFL( s_block_count ), |
| 288 | DFL( s_free_blocks ), |
| 289 | DFL( s_root_block ), |
| 290 | DF( s_blocksize ), |
| 291 | DF( s_oid_maxsize ), |
| 292 | DF( s_oid_cursize ), |
| 293 | DF( s_umount_state ), |
| 294 | rs -> s_v1.s_magic, |
| 295 | DF( s_fs_state ), |
| 296 | hash_code == TEA_HASH ? "tea" : |
| 297 | ( hash_code == YURA_HASH ) ? "rupasov" : |
| 298 | ( hash_code == R5_HASH ) ? "r5" : |
| 299 | ( hash_code == UNSET_HASH ) ? "unset" : "unknown", |
| 300 | DF( s_tree_height ), |
| 301 | DF( s_bmap_nr ), |
| 302 | DF( s_version ), |
| 303 | flags, |
| 304 | ( flags & reiserfs_attrs_cleared ) |
| 305 | ? "attrs_cleared" : "", |
| 306 | DF (s_reserved_for_journal)); |
| 307 | |
| 308 | return 0; |
| 309 | } |
| 310 | |
| 311 | static int show_oidmap(struct seq_file *m, struct super_block *sb) |
| 312 | { |
| 313 | struct reiserfs_sb_info *sb_info = REISERFS_SB(sb); |
| 314 | struct reiserfs_super_block *rs = sb_info -> s_rs; |
| 315 | unsigned int mapsize = le16_to_cpu( rs -> s_v1.s_oid_cursize ); |
| 316 | unsigned long total_used = 0; |
| 317 | int i; |
| 318 | |
| 319 | for( i = 0 ; i < mapsize ; ++i ) { |
| 320 | __u32 right; |
| 321 | |
| 322 | right = ( i == mapsize - 1 ) ? MAX_KEY_OBJECTID : MAP( i + 1 ); |
| 323 | seq_printf(m, "%s: [ %x .. %x )\n", |
| 324 | ( i & 1 ) ? "free" : "used", MAP( i ), right ); |
| 325 | if( ! ( i & 1 ) ) { |
| 326 | total_used += right - MAP( i ); |
| 327 | } |
| 328 | } |
| 329 | #if defined( REISERFS_USE_OIDMAPF ) |
| 330 | if( sb_info -> oidmap.use_file && ( sb_info -> oidmap.mapf != NULL ) ) { |
| 331 | loff_t size = sb_info->oidmap.mapf->f_dentry->d_inode->i_size; |
| 332 | total_used += size / sizeof( reiserfs_oidinterval_d_t ); |
| 333 | } |
| 334 | #endif |
| 335 | seq_printf(m, "total: \t%i [%i/%i] used: %lu [exact]\n", |
| 336 | mapsize, |
| 337 | mapsize, le16_to_cpu( rs -> s_v1.s_oid_maxsize ), |
| 338 | total_used); |
| 339 | return 0; |
| 340 | } |
| 341 | |
| 342 | static int show_journal(struct seq_file *m, struct super_block *sb) |
| 343 | { |
| 344 | struct reiserfs_sb_info *r = REISERFS_SB(sb); |
| 345 | struct reiserfs_super_block *rs = r -> s_rs; |
| 346 | struct journal_params *jp = &rs->s_v1.s_journal; |
| 347 | char b[BDEVNAME_SIZE]; |
| 348 | |
| 349 | |
| 350 | seq_printf(m, /* on-disk fields */ |
| 351 | "jp_journal_1st_block: \t%i\n" |
| 352 | "jp_journal_dev: \t%s[%x]\n" |
| 353 | "jp_journal_size: \t%i\n" |
| 354 | "jp_journal_trans_max: \t%i\n" |
| 355 | "jp_journal_magic: \t%i\n" |
| 356 | "jp_journal_max_batch: \t%i\n" |
| 357 | "jp_journal_max_commit_age: \t%i\n" |
| 358 | "jp_journal_max_trans_age: \t%i\n" |
| 359 | /* incore fields */ |
| 360 | "j_1st_reserved_block: \t%i\n" |
| 361 | "j_state: \t%li\n" |
| 362 | "j_trans_id: \t%lu\n" |
| 363 | "j_mount_id: \t%lu\n" |
| 364 | "j_start: \t%lu\n" |
| 365 | "j_len: \t%lu\n" |
| 366 | "j_len_alloc: \t%lu\n" |
| 367 | "j_wcount: \t%i\n" |
| 368 | "j_bcount: \t%lu\n" |
| 369 | "j_first_unflushed_offset: \t%lu\n" |
| 370 | "j_last_flush_trans_id: \t%lu\n" |
| 371 | "j_trans_start_time: \t%li\n" |
| 372 | "j_list_bitmap_index: \t%i\n" |
| 373 | "j_must_wait: \t%i\n" |
| 374 | "j_next_full_flush: \t%i\n" |
| 375 | "j_next_async_flush: \t%i\n" |
| 376 | "j_cnode_used: \t%i\n" |
| 377 | "j_cnode_free: \t%i\n" |
| 378 | "\n" |
| 379 | /* reiserfs_proc_info_data_t.journal fields */ |
| 380 | "in_journal: \t%12lu\n" |
| 381 | "in_journal_bitmap: \t%12lu\n" |
| 382 | "in_journal_reusable: \t%12lu\n" |
| 383 | "lock_journal: \t%12lu\n" |
| 384 | "lock_journal_wait: \t%12lu\n" |
| 385 | "journal_begin: \t%12lu\n" |
| 386 | "journal_relock_writers: \t%12lu\n" |
| 387 | "journal_relock_wcount: \t%12lu\n" |
| 388 | "mark_dirty: \t%12lu\n" |
| 389 | "mark_dirty_already: \t%12lu\n" |
| 390 | "mark_dirty_notjournal: \t%12lu\n" |
| 391 | "restore_prepared: \t%12lu\n" |
| 392 | "prepare: \t%12lu\n" |
| 393 | "prepare_retry: \t%12lu\n", |
| 394 | |
| 395 | DJP( jp_journal_1st_block ), |
| 396 | bdevname(SB_JOURNAL(sb)->j_dev_bd, b), |
| 397 | DJP( jp_journal_dev ), |
| 398 | DJP( jp_journal_size ), |
| 399 | DJP( jp_journal_trans_max ), |
| 400 | DJP( jp_journal_magic ), |
| 401 | DJP( jp_journal_max_batch ), |
| 402 | SB_JOURNAL(sb)->j_max_commit_age, |
| 403 | DJP( jp_journal_max_trans_age ), |
| 404 | |
| 405 | JF( j_1st_reserved_block ), |
| 406 | JF( j_state ), |
| 407 | JF( j_trans_id ), |
| 408 | JF( j_mount_id ), |
| 409 | JF( j_start ), |
| 410 | JF( j_len ), |
| 411 | JF( j_len_alloc ), |
| 412 | atomic_read( & r -> s_journal -> j_wcount ), |
| 413 | JF( j_bcount ), |
| 414 | JF( j_first_unflushed_offset ), |
| 415 | JF( j_last_flush_trans_id ), |
| 416 | JF( j_trans_start_time ), |
| 417 | JF( j_list_bitmap_index ), |
| 418 | JF( j_must_wait ), |
| 419 | JF( j_next_full_flush ), |
| 420 | JF( j_next_async_flush ), |
| 421 | JF( j_cnode_used ), |
| 422 | JF( j_cnode_free ), |
| 423 | |
| 424 | SFPJ( in_journal ), |
| 425 | SFPJ( in_journal_bitmap ), |
| 426 | SFPJ( in_journal_reusable ), |
| 427 | SFPJ( lock_journal ), |
| 428 | SFPJ( lock_journal_wait ), |
| 429 | SFPJ( journal_being ), |
| 430 | SFPJ( journal_relock_writers ), |
| 431 | SFPJ( journal_relock_wcount ), |
| 432 | SFPJ( mark_dirty ), |
| 433 | SFPJ( mark_dirty_already ), |
| 434 | SFPJ( mark_dirty_notjournal ), |
| 435 | SFPJ( restore_prepared ), |
| 436 | SFPJ( prepare ), |
| 437 | SFPJ( prepare_retry ) |
| 438 | ); |
| 439 | return 0; |
| 440 | } |
| 441 | |
| 442 | /* iterator */ |
| 443 | static int test_sb(struct super_block *sb, void *data) |
| 444 | { |
| 445 | return data == sb; |
| 446 | } |
| 447 | |
| 448 | static int set_sb(struct super_block *sb, void *data) |
| 449 | { |
| 450 | return -ENOENT; |
| 451 | } |
| 452 | |
| 453 | static void *r_start(struct seq_file *m, loff_t *pos) |
| 454 | { |
| 455 | struct proc_dir_entry *de = m->private; |
| 456 | struct super_block *s = de->parent->data; |
| 457 | loff_t l = *pos; |
| 458 | |
| 459 | if (l) |
| 460 | return NULL; |
| 461 | |
| 462 | if (IS_ERR(sget(&reiserfs_fs_type, test_sb, set_sb, s))) |
| 463 | return NULL; |
| 464 | |
| 465 | up_write(&s->s_umount); |
| 466 | |
| 467 | if (de->deleted) { |
| 468 | deactivate_super(s); |
| 469 | return NULL; |
| 470 | } |
| 471 | |
| 472 | return s; |
| 473 | } |
| 474 | |
| 475 | static void *r_next(struct seq_file *m, void *v, loff_t *pos) |
| 476 | { |
| 477 | ++*pos; |
| 478 | if (v) |
| 479 | deactivate_super(v); |
| 480 | return NULL; |
| 481 | } |
| 482 | |
| 483 | static void r_stop(struct seq_file *m, void *v) |
| 484 | { |
| 485 | if (v) |
| 486 | deactivate_super(v); |
| 487 | } |
| 488 | |
| 489 | static int r_show(struct seq_file *m, void *v) |
| 490 | { |
| 491 | struct proc_dir_entry *de = m->private; |
| 492 | int (*show)(struct seq_file *, struct super_block *) = de->data; |
| 493 | return show(m, v); |
| 494 | } |
| 495 | |
| 496 | static struct seq_operations r_ops = { |
| 497 | .start = r_start, |
| 498 | .next = r_next, |
| 499 | .stop = r_stop, |
| 500 | .show = r_show, |
| 501 | }; |
| 502 | |
| 503 | static int r_open(struct inode *inode, struct file *file) |
| 504 | { |
| 505 | int ret = seq_open(file, &r_ops); |
| 506 | |
| 507 | if (!ret) { |
| 508 | struct seq_file *m = file->private_data; |
| 509 | m->private = PDE(inode); |
| 510 | } |
| 511 | return ret; |
| 512 | } |
| 513 | |
| 514 | static struct file_operations r_file_operations = { |
| 515 | .open = r_open, |
| 516 | .read = seq_read, |
| 517 | .llseek = seq_lseek, |
| 518 | .release = seq_release, |
| 519 | }; |
| 520 | |
| 521 | static struct proc_dir_entry *proc_info_root = NULL; |
| 522 | static const char proc_info_root_name[] = "fs/reiserfs"; |
| 523 | |
| 524 | static void add_file(struct super_block *sb, char *name, |
| 525 | int (*func)(struct seq_file *, struct super_block *)) |
| 526 | { |
| 527 | struct proc_dir_entry *de; |
| 528 | de = create_proc_entry(name, 0, REISERFS_SB(sb)->procdir); |
| 529 | if (de) { |
| 530 | de->data = func; |
| 531 | de->proc_fops = &r_file_operations; |
| 532 | } |
| 533 | } |
| 534 | |
| 535 | int reiserfs_proc_info_init( struct super_block *sb ) |
| 536 | { |
| 537 | spin_lock_init( & __PINFO( sb ).lock ); |
| 538 | REISERFS_SB(sb)->procdir = proc_mkdir(reiserfs_bdevname (sb), proc_info_root); |
| 539 | if( REISERFS_SB(sb)->procdir ) { |
| 540 | REISERFS_SB(sb)->procdir->owner = THIS_MODULE; |
| 541 | REISERFS_SB(sb)->procdir->data = sb; |
| 542 | add_file(sb, "version", show_version); |
| 543 | add_file(sb, "super", show_super); |
| 544 | add_file(sb, "per-level", show_per_level); |
| 545 | add_file(sb, "bitmap", show_bitmap); |
| 546 | add_file(sb, "on-disk-super", show_on_disk_super); |
| 547 | add_file(sb, "oidmap", show_oidmap); |
| 548 | add_file(sb, "journal", show_journal); |
| 549 | return 0; |
| 550 | } |
| 551 | reiserfs_warning(sb, "reiserfs: cannot create /proc/%s/%s", |
| 552 | proc_info_root_name, reiserfs_bdevname (sb) ); |
| 553 | return 1; |
| 554 | } |
| 555 | |
| 556 | int reiserfs_proc_info_done( struct super_block *sb ) |
| 557 | { |
| 558 | struct proc_dir_entry *de = REISERFS_SB(sb)->procdir; |
| 559 | if (de) { |
| 560 | remove_proc_entry("journal", de); |
| 561 | remove_proc_entry("oidmap", de); |
| 562 | remove_proc_entry("on-disk-super", de); |
| 563 | remove_proc_entry("bitmap", de); |
| 564 | remove_proc_entry("per-level", de); |
| 565 | remove_proc_entry("super", de); |
| 566 | remove_proc_entry("version", de); |
| 567 | } |
| 568 | spin_lock( & __PINFO( sb ).lock ); |
| 569 | __PINFO( sb ).exiting = 1; |
| 570 | spin_unlock( & __PINFO( sb ).lock ); |
| 571 | if ( proc_info_root ) { |
| 572 | remove_proc_entry( reiserfs_bdevname (sb), proc_info_root ); |
| 573 | REISERFS_SB(sb)->procdir = NULL; |
| 574 | } |
| 575 | return 0; |
| 576 | } |
| 577 | |
| 578 | struct proc_dir_entry *reiserfs_proc_register_global( char *name, |
| 579 | read_proc_t *func ) |
| 580 | { |
| 581 | return ( proc_info_root ) ? create_proc_read_entry( name, 0, |
| 582 | proc_info_root, |
| 583 | func, NULL ) : NULL; |
| 584 | } |
| 585 | |
| 586 | void reiserfs_proc_unregister_global( const char *name ) |
| 587 | { |
| 588 | remove_proc_entry( name, proc_info_root ); |
| 589 | } |
| 590 | |
| 591 | int reiserfs_proc_info_global_init( void ) |
| 592 | { |
| 593 | if( proc_info_root == NULL ) { |
| 594 | proc_info_root = proc_mkdir(proc_info_root_name, NULL); |
| 595 | if( proc_info_root ) { |
| 596 | proc_info_root -> owner = THIS_MODULE; |
| 597 | } else { |
| 598 | reiserfs_warning (NULL, |
| 599 | "reiserfs: cannot create /proc/%s", |
| 600 | proc_info_root_name ); |
| 601 | return 1; |
| 602 | } |
| 603 | } |
| 604 | return 0; |
| 605 | } |
| 606 | |
| 607 | int reiserfs_proc_info_global_done( void ) |
| 608 | { |
| 609 | if ( proc_info_root != NULL ) { |
| 610 | proc_info_root = NULL; |
| 611 | remove_proc_entry(proc_info_root_name, NULL); |
| 612 | } |
| 613 | return 0; |
| 614 | } |
| 615 | |
| 616 | /* REISERFS_PROC_INFO */ |
| 617 | #else |
| 618 | |
| 619 | int reiserfs_proc_info_init( struct super_block *sb ) { return 0; } |
| 620 | int reiserfs_proc_info_done( struct super_block *sb ) { return 0; } |
| 621 | |
| 622 | struct proc_dir_entry *reiserfs_proc_register_global( char *name, |
| 623 | read_proc_t *func ) |
| 624 | { return NULL; } |
| 625 | |
| 626 | void reiserfs_proc_unregister_global( const char *name ) {;} |
| 627 | |
| 628 | int reiserfs_proc_info_global_init( void ) { return 0; } |
| 629 | int reiserfs_proc_info_global_done( void ) { return 0; } |
| 630 | |
| 631 | int reiserfs_global_version_in_proc( char *buffer, char **start, |
| 632 | off_t offset, |
| 633 | int count, int *eof, void *data ) |
| 634 | { return 0; } |
| 635 | |
| 636 | /* REISERFS_PROC_INFO */ |
| 637 | #endif |
| 638 | |
| 639 | /* |
| 640 | * $Log: procfs.c,v $ |
| 641 | * Revision 1.1.8.2 2001/07/15 17:08:42 god |
| 642 | * . use get_super() in procfs.c |
| 643 | * . remove remove_save_link() from reiserfs_do_truncate() |
| 644 | * |
| 645 | * I accept terms and conditions stated in the Legal Agreement |
| 646 | * (available at http://www.namesys.com/legalese.html) |
| 647 | * |
| 648 | * Revision 1.1.8.1 2001/07/11 16:48:50 god |
| 649 | * proc info support |
| 650 | * |
| 651 | * I accept terms and conditions stated in the Legal Agreement |
| 652 | * (available at http://www.namesys.com/legalese.html) |
| 653 | * |
| 654 | */ |
| 655 | |
| 656 | /* |
| 657 | * Make Linus happy. |
| 658 | * Local variables: |
| 659 | * c-indentation-style: "K&R" |
| 660 | * mode-name: "LC" |
| 661 | * c-basic-offset: 8 |
| 662 | * tab-width: 8 |
| 663 | * End: |
| 664 | */ |