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- /* -*- 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 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;
- char b[BDEVNAME_SIZE];
- seq_printf(m, /* on-disk fields */
- "jp_journal_1st_block: \t%i\n"
- "jp_journal_dev: \t%s[%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%li\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),
- bdevname(SB_JOURNAL(sb)->j_dev_bd, b),
- 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),
- 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 int r_open(struct inode *inode, struct file *file)
- {
- return single_open(file, PDE_DATA(inode),
- proc_get_parent_data(inode));
- }
- static const struct file_operations r_file_operations = {
- .open = r_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- };
- 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_data(name, 0, REISERFS_SB(sb)->procdir,
- &r_file_operations, func);
- }
- 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:
- */
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