diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/reiserfs/procfs.c |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'fs/reiserfs/procfs.c')
-rw-r--r-- | fs/reiserfs/procfs.c | 664 |
1 files changed, 664 insertions, 0 deletions
diff --git a/fs/reiserfs/procfs.c b/fs/reiserfs/procfs.c new file mode 100644 index 000000000000..f4ea81ae0e0f --- /dev/null +++ b/fs/reiserfs/procfs.c @@ -0,0 +1,664 @@ +/* -*- 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 */ + +/* $Id: procfs.c,v 1.1.8.2 2001/07/15 17:08:42 god Exp $ */ + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/time.h> +#include <linux/seq_file.h> +#include <asm/uaccess.h> +#include <linux/reiserfs_fs.h> +#include <linux/reiserfs_fs_sb.h> +#include <linux/smp_lock.h> +#include <linux/init.h> +#include <linux/proc_fs.h> + +#if defined( REISERFS_PROC_INFO ) + +/* + * LOCKING: + * + * We rely on new Alexander Viro's super-block locking. + * + */ + +static int show_version(struct seq_file *m, struct super_block *sb) +{ + 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; +} + +int reiserfs_global_version_in_proc( char *buffer, char **start, off_t offset, + int count, int *eof, void *data ) +{ + *start = buffer; + *eof = 1; + 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) ? \ + (__u32 *)((struct reiserfs_super_block_v1 *)rs + 1) : \ + (__u32 *)(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, struct super_block *sb) +{ + 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_kmallocs: \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_kmallocs ), + 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, struct super_block *sb) +{ + 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, struct super_block *sb) +{ + 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, struct super_block *sb) +{ + 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, struct super_block *sb) +{ + 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 = sb_info->oidmap.mapf->f_dentry->d_inode->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, struct super_block *sb) +{ + 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%lu\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%lu\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; +} + +/* iterator */ +static int test_sb(struct super_block *sb, void *data) +{ + return data == sb; +} + +static int set_sb(struct super_block *sb, void *data) +{ + return -ENOENT; +} + +static void *r_start(struct seq_file *m, loff_t *pos) +{ + struct proc_dir_entry *de = m->private; + struct super_block *s = de->parent->data; + loff_t l = *pos; + + if (l) + return NULL; + + if (IS_ERR(sget(&reiserfs_fs_type, test_sb, set_sb, s))) + return NULL; + + up_write(&s->s_umount); + + if (de->deleted) { + deactivate_super(s); + return NULL; + } + + return s; +} + +static void *r_next(struct seq_file *m, void *v, loff_t *pos) +{ + ++*pos; + if (v) + deactivate_super(v); + return NULL; +} + +static void r_stop(struct seq_file *m, void *v) +{ + if (v) + deactivate_super(v); +} + +static int r_show(struct seq_file *m, void *v) +{ + struct proc_dir_entry *de = m->private; + int (*show)(struct seq_file *, struct super_block *) = de->data; + return show(m, v); +} + +static struct seq_operations r_ops = { + .start = r_start, + .next = r_next, + .stop = r_stop, + .show = r_show, +}; + +static int r_open(struct inode *inode, struct file *file) +{ + int ret = seq_open(file, &r_ops); + + if (!ret) { + struct seq_file *m = file->private_data; + m->private = PDE(inode); + } + return ret; +} + +static struct file_operations r_file_operations = { + .open = r_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_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 *, struct super_block *)) +{ + struct proc_dir_entry *de; + de = create_proc_entry(name, 0, REISERFS_SB(sb)->procdir); + if (de) { + de->data = func; + de->proc_fops = &r_file_operations; + } +} + +int reiserfs_proc_info_init( struct super_block *sb ) +{ + spin_lock_init( & __PINFO( sb ).lock ); + REISERFS_SB(sb)->procdir = proc_mkdir(reiserfs_bdevname (sb), proc_info_root); + if( REISERFS_SB(sb)->procdir ) { + REISERFS_SB(sb)->procdir->owner = THIS_MODULE; + REISERFS_SB(sb)->procdir->data = sb; + 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, "reiserfs: cannot create /proc/%s/%s", + proc_info_root_name, reiserfs_bdevname (sb) ); + return 1; +} + +int reiserfs_proc_info_done( struct super_block *sb ) +{ + struct proc_dir_entry *de = REISERFS_SB(sb)->procdir; + if (de) { + remove_proc_entry("journal", de); + remove_proc_entry("oidmap", de); + remove_proc_entry("on-disk-super", de); + remove_proc_entry("bitmap", de); + remove_proc_entry("per-level", de); + remove_proc_entry("super", de); + remove_proc_entry("version", de); + } + spin_lock( & __PINFO( sb ).lock ); + __PINFO( sb ).exiting = 1; + spin_unlock( & __PINFO( sb ).lock ); + if ( proc_info_root ) { + remove_proc_entry( reiserfs_bdevname (sb), proc_info_root ); + REISERFS_SB(sb)->procdir = NULL; + } + return 0; +} + +struct proc_dir_entry *reiserfs_proc_register_global( char *name, + read_proc_t *func ) +{ + return ( proc_info_root ) ? create_proc_read_entry( name, 0, + proc_info_root, + func, NULL ) : NULL; +} + +void reiserfs_proc_unregister_global( const char *name ) +{ + remove_proc_entry( name, proc_info_root ); +} + +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 ) { + proc_info_root -> owner = THIS_MODULE; + } else { + reiserfs_warning (NULL, + "reiserfs: 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; +} + +/* REISERFS_PROC_INFO */ +#else + +int reiserfs_proc_info_init( struct super_block *sb ) { return 0; } +int reiserfs_proc_info_done( struct super_block *sb ) { return 0; } + +struct proc_dir_entry *reiserfs_proc_register_global( char *name, + read_proc_t *func ) +{ return NULL; } + +void reiserfs_proc_unregister_global( const char *name ) {;} + +int reiserfs_proc_info_global_init( void ) { return 0; } +int reiserfs_proc_info_global_done( void ) { return 0; } + +int reiserfs_global_version_in_proc( char *buffer, char **start, + off_t offset, + int count, int *eof, void *data ) +{ return 0; } + +/* REISERFS_PROC_INFO */ +#endif + +/* + * $Log: procfs.c,v $ + * 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: + */ |