diff options
Diffstat (limited to 'fs/reiserfs/procfs.c')
| -rw-r--r-- | fs/reiserfs/procfs.c | 500 |
1 files changed, 500 insertions, 0 deletions
diff --git a/fs/reiserfs/procfs.c b/fs/reiserfs/procfs.c new file mode 100644 index 000000000..f2cf3441f --- /dev/null +++ b/fs/reiserfs/procfs.c @@ -0,0 +1,500 @@ +/* -*- 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: + */ |