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