| /* -*- linux-c -*- */ |
| |
| /* fs/reiserfs/procfs.c */ |
| |
| /* |
| * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README |
| */ |
| |
| /* proc info support a la one created by Sizif@Botik.RU for PGC */ |
| |
| #include <linux/module.h> |
| #include <linux/time.h> |
| #include <linux/seq_file.h> |
| #include <linux/uaccess.h> |
| #include "reiserfs.h" |
| #include <linux/init.h> |
| #include <linux/proc_fs.h> |
| |
| /* |
| * LOCKING: |
| * |
| * These guys are evicted from procfs as the very first step in ->kill_sb(). |
| * |
| */ |
| |
| static int show_version(struct seq_file *m, void *unused) |
| { |
| struct super_block *sb = m->private; |
| char *format; |
| |
| if (REISERFS_SB(sb)->s_properties & (1 << REISERFS_3_6)) { |
| format = "3.6"; |
| } else if (REISERFS_SB(sb)->s_properties & (1 << REISERFS_3_5)) { |
| format = "3.5"; |
| } else { |
| format = "unknown"; |
| } |
| |
| seq_printf(m, "%s format\twith checks %s\n", format, |
| #if defined( CONFIG_REISERFS_CHECK ) |
| "on" |
| #else |
| "off" |
| #endif |
| ); |
| return 0; |
| } |
| |
| #define SF( x ) ( r -> x ) |
| #define SFP( x ) SF( s_proc_info_data.x ) |
| #define SFPL( x ) SFP( x[ level ] ) |
| #define SFPF( x ) SFP( scan_bitmap.x ) |
| #define SFPJ( x ) SFP( journal.x ) |
| |
| #define D2C( x ) le16_to_cpu( x ) |
| #define D4C( x ) le32_to_cpu( x ) |
| #define DF( x ) D2C( rs -> s_v1.x ) |
| #define DFL( x ) D4C( rs -> s_v1.x ) |
| |
| #define objectid_map( s, rs ) (old_format_only (s) ? \ |
| (__le32 *)((struct reiserfs_super_block_v1 *)rs + 1) : \ |
| (__le32 *)(rs + 1)) |
| #define MAP( i ) D4C( objectid_map( sb, rs )[ i ] ) |
| |
| #define DJF( x ) le32_to_cpu( rs -> x ) |
| #define DJV( x ) le32_to_cpu( s_v1 -> x ) |
| #define DJP( x ) le32_to_cpu( jp -> x ) |
| #define JF( x ) ( r -> s_journal -> x ) |
| |
| static int show_super(struct seq_file *m, void *unused) |
| { |
| struct super_block *sb = m->private; |
| struct reiserfs_sb_info *r = REISERFS_SB(sb); |
| |
| seq_printf(m, "state: \t%s\n" |
| "mount options: \t%s%s%s%s%s%s%s%s%s%s%s\n" |
| "gen. counter: \t%i\n" |
| "s_disk_reads: \t%i\n" |
| "s_disk_writes: \t%i\n" |
| "s_fix_nodes: \t%i\n" |
| "s_do_balance: \t%i\n" |
| "s_unneeded_left_neighbor: \t%i\n" |
| "s_good_search_by_key_reada: \t%i\n" |
| "s_bmaps: \t%i\n" |
| "s_bmaps_without_search: \t%i\n" |
| "s_direct2indirect: \t%i\n" |
| "s_indirect2direct: \t%i\n" |
| "\n" |
| "max_hash_collisions: \t%i\n" |
| "breads: \t%lu\n" |
| "bread_misses: \t%lu\n" |
| "search_by_key: \t%lu\n" |
| "search_by_key_fs_changed: \t%lu\n" |
| "search_by_key_restarted: \t%lu\n" |
| "insert_item_restarted: \t%lu\n" |
| "paste_into_item_restarted: \t%lu\n" |
| "cut_from_item_restarted: \t%lu\n" |
| "delete_solid_item_restarted: \t%lu\n" |
| "delete_item_restarted: \t%lu\n" |
| "leaked_oid: \t%lu\n" |
| "leaves_removable: \t%lu\n", |
| SF(s_mount_state) == REISERFS_VALID_FS ? |
| "REISERFS_VALID_FS" : "REISERFS_ERROR_FS", |
| reiserfs_r5_hash(sb) ? "FORCE_R5 " : "", |
| reiserfs_rupasov_hash(sb) ? "FORCE_RUPASOV " : "", |
| reiserfs_tea_hash(sb) ? "FORCE_TEA " : "", |
| reiserfs_hash_detect(sb) ? "DETECT_HASH " : "", |
| reiserfs_no_border(sb) ? "NO_BORDER " : "BORDER ", |
| reiserfs_no_unhashed_relocation(sb) ? |
| "NO_UNHASHED_RELOCATION " : "", |
| reiserfs_hashed_relocation(sb) ? "UNHASHED_RELOCATION " : "", |
| reiserfs_test4(sb) ? "TEST4 " : "", |
| have_large_tails(sb) ? "TAILS " : have_small_tails(sb) ? |
| "SMALL_TAILS " : "NO_TAILS ", |
| replay_only(sb) ? "REPLAY_ONLY " : "", |
| convert_reiserfs(sb) ? "CONV " : "", |
| atomic_read(&r->s_generation_counter), |
| SF(s_disk_reads), SF(s_disk_writes), SF(s_fix_nodes), |
| SF(s_do_balance), SF(s_unneeded_left_neighbor), |
| SF(s_good_search_by_key_reada), SF(s_bmaps), |
| SF(s_bmaps_without_search), SF(s_direct2indirect), |
| SF(s_indirect2direct), SFP(max_hash_collisions), SFP(breads), |
| SFP(bread_miss), SFP(search_by_key), |
| SFP(search_by_key_fs_changed), SFP(search_by_key_restarted), |
| SFP(insert_item_restarted), SFP(paste_into_item_restarted), |
| SFP(cut_from_item_restarted), |
| SFP(delete_solid_item_restarted), SFP(delete_item_restarted), |
| SFP(leaked_oid), SFP(leaves_removable)); |
| |
| return 0; |
| } |
| |
| static int show_per_level(struct seq_file *m, void *unused) |
| { |
| struct super_block *sb = m->private; |
| struct reiserfs_sb_info *r = REISERFS_SB(sb); |
| int level; |
| |
| seq_printf(m, "level\t" |
| " balances" |
| " [sbk: reads" |
| " fs_changed" |
| " restarted]" |
| " free space" |
| " items" |
| " can_remove" |
| " lnum" |
| " rnum" |
| " lbytes" |
| " rbytes" |
| " get_neig" |
| " get_neig_res" " need_l_neig" " need_r_neig" "\n"); |
| |
| for (level = 0; level < MAX_HEIGHT; ++level) { |
| seq_printf(m, "%i\t" |
| " %12lu" |
| " %12lu" |
| " %12lu" |
| " %12lu" |
| " %12lu" |
| " %12lu" |
| " %12lu" |
| " %12li" |
| " %12li" |
| " %12li" |
| " %12li" |
| " %12lu" |
| " %12lu" |
| " %12lu" |
| " %12lu" |
| "\n", |
| level, |
| SFPL(balance_at), |
| SFPL(sbk_read_at), |
| SFPL(sbk_fs_changed), |
| SFPL(sbk_restarted), |
| SFPL(free_at), |
| SFPL(items_at), |
| SFPL(can_node_be_removed), |
| SFPL(lnum), |
| SFPL(rnum), |
| SFPL(lbytes), |
| SFPL(rbytes), |
| SFPL(get_neighbors), |
| SFPL(get_neighbors_restart), |
| SFPL(need_l_neighbor), SFPL(need_r_neighbor) |
| ); |
| } |
| return 0; |
| } |
| |
| static int show_bitmap(struct seq_file *m, void *unused) |
| { |
| struct super_block *sb = m->private; |
| struct reiserfs_sb_info *r = REISERFS_SB(sb); |
| |
| seq_printf(m, "free_block: %lu\n" |
| " scan_bitmap:" |
| " wait" |
| " bmap" |
| " retry" |
| " stolen" |
| " journal_hint" |
| "journal_nohint" |
| "\n" |
| " %14lu" |
| " %14lu" |
| " %14lu" |
| " %14lu" |
| " %14lu" |
| " %14lu" |
| " %14lu" |
| "\n", |
| SFP(free_block), |
| SFPF(call), |
| SFPF(wait), |
| SFPF(bmap), |
| SFPF(retry), |
| SFPF(stolen), |
| SFPF(in_journal_hint), SFPF(in_journal_nohint)); |
| |
| return 0; |
| } |
| |
| static int show_on_disk_super(struct seq_file *m, void *unused) |
| { |
| struct super_block *sb = m->private; |
| struct reiserfs_sb_info *sb_info = REISERFS_SB(sb); |
| struct reiserfs_super_block *rs = sb_info->s_rs; |
| int hash_code = DFL(s_hash_function_code); |
| __u32 flags = DJF(s_flags); |
| |
| seq_printf(m, "block_count: \t%i\n" |
| "free_blocks: \t%i\n" |
| "root_block: \t%i\n" |
| "blocksize: \t%i\n" |
| "oid_maxsize: \t%i\n" |
| "oid_cursize: \t%i\n" |
| "umount_state: \t%i\n" |
| "magic: \t%10.10s\n" |
| "fs_state: \t%i\n" |
| "hash: \t%s\n" |
| "tree_height: \t%i\n" |
| "bmap_nr: \t%i\n" |
| "version: \t%i\n" |
| "flags: \t%x[%s]\n" |
| "reserved_for_journal: \t%i\n", |
| DFL(s_block_count), |
| DFL(s_free_blocks), |
| DFL(s_root_block), |
| DF(s_blocksize), |
| DF(s_oid_maxsize), |
| DF(s_oid_cursize), |
| DF(s_umount_state), |
| rs->s_v1.s_magic, |
| DF(s_fs_state), |
| hash_code == TEA_HASH ? "tea" : |
| (hash_code == YURA_HASH) ? "rupasov" : |
| (hash_code == R5_HASH) ? "r5" : |
| (hash_code == UNSET_HASH) ? "unset" : "unknown", |
| DF(s_tree_height), |
| DF(s_bmap_nr), |
| DF(s_version), flags, (flags & reiserfs_attrs_cleared) |
| ? "attrs_cleared" : "", DF(s_reserved_for_journal)); |
| |
| return 0; |
| } |
| |
| static int show_oidmap(struct seq_file *m, void *unused) |
| { |
| struct super_block *sb = m->private; |
| struct reiserfs_sb_info *sb_info = REISERFS_SB(sb); |
| struct reiserfs_super_block *rs = sb_info->s_rs; |
| unsigned int mapsize = le16_to_cpu(rs->s_v1.s_oid_cursize); |
| unsigned long total_used = 0; |
| int i; |
| |
| for (i = 0; i < mapsize; ++i) { |
| __u32 right; |
| |
| right = (i == mapsize - 1) ? MAX_KEY_OBJECTID : MAP(i + 1); |
| seq_printf(m, "%s: [ %x .. %x )\n", |
| (i & 1) ? "free" : "used", MAP(i), right); |
| if (!(i & 1)) { |
| total_used += right - MAP(i); |
| } |
| } |
| #if defined( REISERFS_USE_OIDMAPF ) |
| if (sb_info->oidmap.use_file && (sb_info->oidmap.mapf != NULL)) { |
| loff_t size = file_inode(sb_info->oidmap.mapf)->i_size; |
| total_used += size / sizeof(reiserfs_oidinterval_d_t); |
| } |
| #endif |
| seq_printf(m, "total: \t%i [%i/%i] used: %lu [exact]\n", |
| mapsize, |
| mapsize, le16_to_cpu(rs->s_v1.s_oid_maxsize), total_used); |
| return 0; |
| } |
| |
| static time64_t ktime_mono_to_real_seconds(time64_t mono) |
| { |
| ktime_t kt = ktime_set(mono, NSEC_PER_SEC/2); |
| |
| return ktime_divns(ktime_mono_to_real(kt), NSEC_PER_SEC); |
| } |
| |
| static int show_journal(struct seq_file *m, void *unused) |
| { |
| struct super_block *sb = m->private; |
| struct reiserfs_sb_info *r = REISERFS_SB(sb); |
| struct reiserfs_super_block *rs = r->s_rs; |
| struct journal_params *jp = &rs->s_v1.s_journal; |
| |
| seq_printf(m, /* on-disk fields */ |
| "jp_journal_1st_block: \t%i\n" |
| "jp_journal_dev: \t%pg[%x]\n" |
| "jp_journal_size: \t%i\n" |
| "jp_journal_trans_max: \t%i\n" |
| "jp_journal_magic: \t%i\n" |
| "jp_journal_max_batch: \t%i\n" |
| "jp_journal_max_commit_age: \t%i\n" |
| "jp_journal_max_trans_age: \t%i\n" |
| /* incore fields */ |
| "j_1st_reserved_block: \t%i\n" |
| "j_state: \t%li\n" |
| "j_trans_id: \t%u\n" |
| "j_mount_id: \t%lu\n" |
| "j_start: \t%lu\n" |
| "j_len: \t%lu\n" |
| "j_len_alloc: \t%lu\n" |
| "j_wcount: \t%i\n" |
| "j_bcount: \t%lu\n" |
| "j_first_unflushed_offset: \t%lu\n" |
| "j_last_flush_trans_id: \t%u\n" |
| "j_trans_start_time: \t%lli\n" |
| "j_list_bitmap_index: \t%i\n" |
| "j_must_wait: \t%i\n" |
| "j_next_full_flush: \t%i\n" |
| "j_next_async_flush: \t%i\n" |
| "j_cnode_used: \t%i\n" "j_cnode_free: \t%i\n" "\n" |
| /* reiserfs_proc_info_data_t.journal fields */ |
| "in_journal: \t%12lu\n" |
| "in_journal_bitmap: \t%12lu\n" |
| "in_journal_reusable: \t%12lu\n" |
| "lock_journal: \t%12lu\n" |
| "lock_journal_wait: \t%12lu\n" |
| "journal_begin: \t%12lu\n" |
| "journal_relock_writers: \t%12lu\n" |
| "journal_relock_wcount: \t%12lu\n" |
| "mark_dirty: \t%12lu\n" |
| "mark_dirty_already: \t%12lu\n" |
| "mark_dirty_notjournal: \t%12lu\n" |
| "restore_prepared: \t%12lu\n" |
| "prepare: \t%12lu\n" |
| "prepare_retry: \t%12lu\n", |
| DJP(jp_journal_1st_block), |
| SB_JOURNAL(sb)->j_dev_bd, |
| DJP(jp_journal_dev), |
| DJP(jp_journal_size), |
| DJP(jp_journal_trans_max), |
| DJP(jp_journal_magic), |
| DJP(jp_journal_max_batch), |
| SB_JOURNAL(sb)->j_max_commit_age, |
| DJP(jp_journal_max_trans_age), |
| JF(j_1st_reserved_block), |
| JF(j_state), |
| JF(j_trans_id), |
| JF(j_mount_id), |
| JF(j_start), |
| JF(j_len), |
| JF(j_len_alloc), |
| atomic_read(&r->s_journal->j_wcount), |
| JF(j_bcount), |
| JF(j_first_unflushed_offset), |
| JF(j_last_flush_trans_id), |
| ktime_mono_to_real_seconds(JF(j_trans_start_time)), |
| JF(j_list_bitmap_index), |
| JF(j_must_wait), |
| JF(j_next_full_flush), |
| JF(j_next_async_flush), |
| JF(j_cnode_used), |
| JF(j_cnode_free), |
| SFPJ(in_journal), |
| SFPJ(in_journal_bitmap), |
| SFPJ(in_journal_reusable), |
| SFPJ(lock_journal), |
| SFPJ(lock_journal_wait), |
| SFPJ(journal_being), |
| SFPJ(journal_relock_writers), |
| SFPJ(journal_relock_wcount), |
| SFPJ(mark_dirty), |
| SFPJ(mark_dirty_already), |
| SFPJ(mark_dirty_notjournal), |
| SFPJ(restore_prepared), SFPJ(prepare), SFPJ(prepare_retry) |
| ); |
| return 0; |
| } |
| |
| static struct proc_dir_entry *proc_info_root = NULL; |
| static const char proc_info_root_name[] = "fs/reiserfs"; |
| |
| static void add_file(struct super_block *sb, char *name, |
| int (*func) (struct seq_file *, void *)) |
| { |
| proc_create_single_data(name, 0, REISERFS_SB(sb)->procdir, func, sb); |
| } |
| |
| int reiserfs_proc_info_init(struct super_block *sb) |
| { |
| char b[BDEVNAME_SIZE]; |
| char *s; |
| |
| /* Some block devices use /'s */ |
| strlcpy(b, sb->s_id, BDEVNAME_SIZE); |
| s = strchr(b, '/'); |
| if (s) |
| *s = '!'; |
| |
| spin_lock_init(&__PINFO(sb).lock); |
| REISERFS_SB(sb)->procdir = proc_mkdir_data(b, 0, proc_info_root, sb); |
| if (REISERFS_SB(sb)->procdir) { |
| add_file(sb, "version", show_version); |
| add_file(sb, "super", show_super); |
| add_file(sb, "per-level", show_per_level); |
| add_file(sb, "bitmap", show_bitmap); |
| add_file(sb, "on-disk-super", show_on_disk_super); |
| add_file(sb, "oidmap", show_oidmap); |
| add_file(sb, "journal", show_journal); |
| return 0; |
| } |
| reiserfs_warning(sb, "cannot create /proc/%s/%s", |
| proc_info_root_name, b); |
| return 1; |
| } |
| |
| int reiserfs_proc_info_done(struct super_block *sb) |
| { |
| struct proc_dir_entry *de = REISERFS_SB(sb)->procdir; |
| if (de) { |
| char b[BDEVNAME_SIZE]; |
| char *s; |
| |
| /* Some block devices use /'s */ |
| strlcpy(b, sb->s_id, BDEVNAME_SIZE); |
| s = strchr(b, '/'); |
| if (s) |
| *s = '!'; |
| |
| remove_proc_subtree(b, proc_info_root); |
| REISERFS_SB(sb)->procdir = NULL; |
| } |
| return 0; |
| } |
| |
| int reiserfs_proc_info_global_init(void) |
| { |
| if (proc_info_root == NULL) { |
| proc_info_root = proc_mkdir(proc_info_root_name, NULL); |
| if (!proc_info_root) { |
| reiserfs_warning(NULL, "cannot create /proc/%s", |
| proc_info_root_name); |
| return 1; |
| } |
| } |
| return 0; |
| } |
| |
| int reiserfs_proc_info_global_done(void) |
| { |
| if (proc_info_root != NULL) { |
| proc_info_root = NULL; |
| remove_proc_entry(proc_info_root_name, NULL); |
| } |
| return 0; |
| } |
| /* |
| * Revision 1.1.8.2 2001/07/15 17:08:42 god |
| * . use get_super() in procfs.c |
| * . remove remove_save_link() from reiserfs_do_truncate() |
| * |
| * I accept terms and conditions stated in the Legal Agreement |
| * (available at http://www.namesys.com/legalese.html) |
| * |
| * Revision 1.1.8.1 2001/07/11 16:48:50 god |
| * proc info support |
| * |
| * I accept terms and conditions stated in the Legal Agreement |
| * (available at http://www.namesys.com/legalese.html) |
| * |
| */ |
| |
| /* |
| * Make Linus happy. |
| * Local variables: |
| * c-indentation-style: "K&R" |
| * mode-name: "LC" |
| * c-basic-offset: 8 |
| * tab-width: 8 |
| * End: |
| */ |