[net-next-2.6.git] / fs / reiserfs / procfs.c

/* -*- 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 <asm/uaccess.h>
#include <linux/reiserfs_fs.h>
#include <linux/reiserfs_fs_sb.h>
#include <linux/init.h>
#include <linux/proc_fs.h>

/*
 * 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;
}

#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, 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_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, 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_path.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%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;
}

/* 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);
	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 const 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 const struct file_operations r_file_operations = {
	.open = r_open,
	.read = seq_read,
	.llseek = seq_lseek,
	.release = seq_release,
	.owner = THIS_MODULE,
};

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 *))
{
	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, reiserfs_bdevname(sb), BDEVNAME_SIZE);
	s = strchr(b, '/');
	if (s)
		*s = '!';

	spin_lock_init(&__PINFO(sb).lock);
	REISERFS_SB(sb)->procdir = proc_mkdir(b, proc_info_root);
	if (REISERFS_SB(sb)->procdir) {
		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, "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;
	char b[BDEVNAME_SIZE];
	char *s;

	/* Some block devices use /'s */
	strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE);
	s = strchr(b, '/');
	if (s)
		*s = '!';

	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(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:
 */
Commit	Line	Data
1da177e4 LT	1	/* -- linux-c -- */
	2
	3	/* fs/reiserfs/procfs.c */
	4
	5	/*
	6	* Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
	7	*/
	8
	9	/* proc info support a la one created by Sizif@Botik.RU for PGC */
	10
1da177e4 LT	11	#include <linux/module.h>
	12	#include <linux/time.h>
	13	#include <linux/seq_file.h>
	14	#include <asm/uaccess.h>
	15	#include <linux/reiserfs_fs.h>
	16	#include <linux/reiserfs_fs_sb.h>
1da177e4 LT	17	#include <linux/init.h>
	18	#include <linux/proc_fs.h>
	19
1da177e4 LT	20	/*
	21	* LOCKING:
	22	*
	23	* We rely on new Alexander Viro's super-block locking.
	24	*
	25	*/
	26
	27	static int show_version(struct seq_file m, struct super_block sb)
	28	{
	29	char *format;
bd4c625c LT	30
bd4c625c LT	31	if (REISERFS_SB(sb)->s_properties & (1 << REISERFS_3_6)) {
1da177e4	32	format = "3.6";
bd4c625c	33	} else if (REISERFS_SB(sb)->s_properties & (1 << REISERFS_3_5)) {
1da177e4 LT	34	format = "3.5";
	35	} else {
	36	format = "unknown";
	37	}
	38
bd4c625c	39	seq_printf(m, "%s format\twith checks %s\n", format,
1da177e4	40	#if defined( CONFIG_REISERFS_CHECK )
bd4c625c	41	"on"
1da177e4	42	#else
bd4c625c	43	"off"
1da177e4	44	#endif
bd4c625c	45	);
1da177e4 LT	46	return 0;
	47	}
	48
1da177e4 LT	49	#define SF( x ) ( r -> x )
	50	#define SFP( x ) SF( s_proc_info_data.x )
	51	#define SFPL( x ) SFP( x[ level ] )
	52	#define SFPF( x ) SFP( scan_bitmap.x )
	53	#define SFPJ( x ) SFP( journal.x )
	54
	55	#define D2C( x ) le16_to_cpu( x )
	56	#define D4C( x ) le32_to_cpu( x )
	57	#define DF( x ) D2C( rs -> s_v1.x )
	58	#define DFL( x ) D4C( rs -> s_v1.x )
	59
	60	#define objectid_map( s, rs ) (old_format_only (s) ? \
3e8962be AV	61	(__le32 )((struct reiserfs_super_block_v1 )rs + 1) : \
3e8962be AV	62	(__le32 *)(rs + 1))
1da177e4 LT	63	#define MAP( i ) D4C( objectid_map( sb, rs )[ i ] )
	64
	65	#define DJF( x ) le32_to_cpu( rs -> x )
	66	#define DJV( x ) le32_to_cpu( s_v1 -> x )
bd4c625c	67	#define DJP( x ) le32_to_cpu( jp -> x )
1da177e4 LT	68	#define JF( x ) ( r -> s_journal -> x )
	69
	70	static int show_super(struct seq_file m, struct super_block sb)
	71	{
	72	struct reiserfs_sb_info *r = REISERFS_SB(sb);
bd4c625c LT	73
	74	seq_printf(m, "state: \t%s\n"
	75	"mount options: \t%s%s%s%s%s%s%s%s%s%s%s\n"
	76	"gen. counter: \t%i\n"
bd4c625c LT	77	"s_disk_reads: \t%i\n"
	78	"s_disk_writes: \t%i\n"
	79	"s_fix_nodes: \t%i\n"
	80	"s_do_balance: \t%i\n"
	81	"s_unneeded_left_neighbor: \t%i\n"
	82	"s_good_search_by_key_reada: \t%i\n"
	83	"s_bmaps: \t%i\n"
	84	"s_bmaps_without_search: \t%i\n"
	85	"s_direct2indirect: \t%i\n"
	86	"s_indirect2direct: \t%i\n"
	87	"\n"
	88	"max_hash_collisions: \t%i\n"
	89	"breads: \t%lu\n"
	90	"bread_misses: \t%lu\n"
	91	"search_by_key: \t%lu\n"
	92	"search_by_key_fs_changed: \t%lu\n"
	93	"search_by_key_restarted: \t%lu\n"
	94	"insert_item_restarted: \t%lu\n"
	95	"paste_into_item_restarted: \t%lu\n"
	96	"cut_from_item_restarted: \t%lu\n"
	97	"delete_solid_item_restarted: \t%lu\n"
	98	"delete_item_restarted: \t%lu\n"
	99	"leaked_oid: \t%lu\n"
	100	"leaves_removable: \t%lu\n",
	101	SF(s_mount_state) == REISERFS_VALID_FS ?
	102	"REISERFS_VALID_FS" : "REISERFS_ERROR_FS",
	103	reiserfs_r5_hash(sb) ? "FORCE_R5 " : "",
	104	reiserfs_rupasov_hash(sb) ? "FORCE_RUPASOV " : "",
	105	reiserfs_tea_hash(sb) ? "FORCE_TEA " : "",
	106	reiserfs_hash_detect(sb) ? "DETECT_HASH " : "",
	107	reiserfs_no_border(sb) ? "NO_BORDER " : "BORDER ",
	108	reiserfs_no_unhashed_relocation(sb) ?
	109	"NO_UNHASHED_RELOCATION " : "",
	110	reiserfs_hashed_relocation(sb) ? "UNHASHED_RELOCATION " : "",
	111	reiserfs_test4(sb) ? "TEST4 " : "",
	112	have_large_tails(sb) ? "TAILS " : have_small_tails(sb) ?
	113	"SMALL_TAILS " : "NO_TAILS ",
	114	replay_only(sb) ? "REPLAY_ONLY " : "",
	115	convert_reiserfs(sb) ? "CONV " : "",
d739b42b	116	atomic_read(&r->s_generation_counter),
bd4c625c LT	117	SF(s_disk_reads), SF(s_disk_writes), SF(s_fix_nodes),
	118	SF(s_do_balance), SF(s_unneeded_left_neighbor),
	119	SF(s_good_search_by_key_reada), SF(s_bmaps),
	120	SF(s_bmaps_without_search), SF(s_direct2indirect),
	121	SF(s_indirect2direct), SFP(max_hash_collisions), SFP(breads),
	122	SFP(bread_miss), SFP(search_by_key),
	123	SFP(search_by_key_fs_changed), SFP(search_by_key_restarted),
	124	SFP(insert_item_restarted), SFP(paste_into_item_restarted),
	125	SFP(cut_from_item_restarted),
	126	SFP(delete_solid_item_restarted), SFP(delete_item_restarted),
	127	SFP(leaked_oid), SFP(leaves_removable));
1da177e4 LT	128
	129	return 0;
	130	}
	131
	132	static int show_per_level(struct seq_file m, struct super_block sb)
	133	{
	134	struct reiserfs_sb_info *r = REISERFS_SB(sb);
	135	int level;
	136
bd4c625c LT	137	seq_printf(m, "level\t"
	138	" balances"
	139	" [sbk: reads"
	140	" fs_changed"
	141	" restarted]"
	142	" free space"
	143	" items"
	144	" can_remove"
	145	" lnum"
	146	" rnum"
	147	" lbytes"
	148	" rbytes"
	149	" get_neig"
	150	" get_neig_res" " need_l_neig" " need_r_neig" "\n");
	151
	152	for (level = 0; level < MAX_HEIGHT; ++level) {
	153	seq_printf(m, "%i\t"
	154	" %12lu"
	155	" %12lu"
	156	" %12lu"
	157	" %12lu"
	158	" %12lu"
	159	" %12lu"
	160	" %12lu"
	161	" %12li"
	162	" %12li"
	163	" %12li"
	164	" %12li"
	165	" %12lu"
	166	" %12lu"
	167	" %12lu"
	168	" %12lu"
	169	"\n",
	170	level,
	171	SFPL(balance_at),
	172	SFPL(sbk_read_at),
	173	SFPL(sbk_fs_changed),
	174	SFPL(sbk_restarted),
	175	SFPL(free_at),
	176	SFPL(items_at),
	177	SFPL(can_node_be_removed),
	178	SFPL(lnum),
	179	SFPL(rnum),
	180	SFPL(lbytes),
	181	SFPL(rbytes),
	182	SFPL(get_neighbors),
	183	SFPL(get_neighbors_restart),
	184	SFPL(need_l_neighbor), SFPL(need_r_neighbor)
	185	);
1da177e4 LT	186	}
	187	return 0;
	188	}
	189
	190	static int show_bitmap(struct seq_file m, struct super_block sb)
	191	{
	192	struct reiserfs_sb_info *r = REISERFS_SB(sb);
	193
bd4c625c LT	194	seq_printf(m, "free_block: %lu\n"
	195	" scan_bitmap:"
	196	" wait"
	197	" bmap"
	198	" retry"
	199	" stolen"
	200	" journal_hint"
	201	"journal_nohint"
	202	"\n"
	203	" %14lu"
	204	" %14lu"
	205	" %14lu"
	206	" %14lu"
	207	" %14lu"
	208	" %14lu"
	209	" %14lu"
	210	"\n",
	211	SFP(free_block),
	212	SFPF(call),
	213	SFPF(wait),
	214	SFPF(bmap),
	215	SFPF(retry),
	216	SFPF(stolen),
	217	SFPF(in_journal_hint), SFPF(in_journal_nohint));
1da177e4 LT	218
	219	return 0;
	220	}
	221
	222	static int show_on_disk_super(struct seq_file m, struct super_block sb)
	223	{
	224	struct reiserfs_sb_info *sb_info = REISERFS_SB(sb);
bd4c625c LT	225	struct reiserfs_super_block *rs = sb_info->s_rs;
	226	int hash_code = DFL(s_hash_function_code);
	227	__u32 flags = DJF(s_flags);
	228
	229	seq_printf(m, "block_count: \t%i\n"
	230	"free_blocks: \t%i\n"
	231	"root_block: \t%i\n"
	232	"blocksize: \t%i\n"
	233	"oid_maxsize: \t%i\n"
	234	"oid_cursize: \t%i\n"
	235	"umount_state: \t%i\n"
	236	"magic: \t%10.10s\n"
	237	"fs_state: \t%i\n"
	238	"hash: \t%s\n"
	239	"tree_height: \t%i\n"
	240	"bmap_nr: \t%i\n"
	241	"version: \t%i\n"
	242	"flags: \t%x[%s]\n"
	243	"reserved_for_journal: \t%i\n",
	244	DFL(s_block_count),
	245	DFL(s_free_blocks),
	246	DFL(s_root_block),
	247	DF(s_blocksize),
	248	DF(s_oid_maxsize),
	249	DF(s_oid_cursize),
	250	DF(s_umount_state),
	251	rs->s_v1.s_magic,
	252	DF(s_fs_state),
	253	hash_code == TEA_HASH ? "tea" :
	254	(hash_code == YURA_HASH) ? "rupasov" :
	255	(hash_code == R5_HASH) ? "r5" :
	256	(hash_code == UNSET_HASH) ? "unset" : "unknown",
	257	DF(s_tree_height),
	258	DF(s_bmap_nr),
	259	DF(s_version), flags, (flags & reiserfs_attrs_cleared)
	260	? "attrs_cleared" : "", DF(s_reserved_for_journal));
1da177e4 LT	261
	262	return 0;
	263	}
	264
	265	static int show_oidmap(struct seq_file m, struct super_block sb)
	266	{
	267	struct reiserfs_sb_info *sb_info = REISERFS_SB(sb);
bd4c625c LT	268	struct reiserfs_super_block *rs = sb_info->s_rs;
bd4c625c LT	269	unsigned int mapsize = le16_to_cpu(rs->s_v1.s_oid_cursize);
1da177e4 LT	270	unsigned long total_used = 0;
	271	int i;
	272
bd4c625c	273	for (i = 0; i < mapsize; ++i) {
1da177e4 LT	274	__u32 right;
1da177e4 LT	275
bd4c625c	276	right = (i == mapsize - 1) ? MAX_KEY_OBJECTID : MAP(i + 1);
1da177e4	277	seq_printf(m, "%s: [ %x .. %x )\n",
bd4c625c LT	278	(i & 1) ? "free" : "used", MAP(i), right);
	279	if (!(i & 1)) {
	280	total_used += right - MAP(i);
1da177e4 LT	281	}
	282	}
	283	#if defined( REISERFS_USE_OIDMAPF )
bd4c625c	284	if (sb_info->oidmap.use_file && (sb_info->oidmap.mapf != NULL)) {
1fc5adbd	285	loff_t size = sb_info->oidmap.mapf->f_path.dentry->d_inode->i_size;
bd4c625c	286	total_used += size / sizeof(reiserfs_oidinterval_d_t);
1da177e4 LT	287	}
1da177e4 LT	288	#endif
bd4c625c LT	289	seq_printf(m, "total: \t%i [%i/%i] used: %lu [exact]\n",
	290	mapsize,
	291	mapsize, le16_to_cpu(rs->s_v1.s_oid_maxsize), total_used);
1da177e4 LT	292	return 0;
	293	}
	294
	295	static int show_journal(struct seq_file m, struct super_block sb)
	296	{
	297	struct reiserfs_sb_info *r = REISERFS_SB(sb);
bd4c625c	298	struct reiserfs_super_block *rs = r->s_rs;
1da177e4 LT	299	struct journal_params *jp = &rs->s_v1.s_journal;
1da177e4 LT	300	char b[BDEVNAME_SIZE];
bd4c625c LT	301
	302	seq_printf(m, /* on-disk fields */
	303	"jp_journal_1st_block: \t%i\n"
	304	"jp_journal_dev: \t%s[%x]\n"
	305	"jp_journal_size: \t%i\n"
	306	"jp_journal_trans_max: \t%i\n"
	307	"jp_journal_magic: \t%i\n"
	308	"jp_journal_max_batch: \t%i\n"
	309	"jp_journal_max_commit_age: \t%i\n"
	310	"jp_journal_max_trans_age: \t%i\n"
	311	/* incore fields */
	312	"j_1st_reserved_block: \t%i\n"
	313	"j_state: \t%li\n"
600ed416	314	"j_trans_id: \t%u\n"
bd4c625c LT	315	"j_mount_id: \t%lu\n"
	316	"j_start: \t%lu\n"
	317	"j_len: \t%lu\n"
	318	"j_len_alloc: \t%lu\n"
	319	"j_wcount: \t%i\n"
	320	"j_bcount: \t%lu\n"
	321	"j_first_unflushed_offset: \t%lu\n"
600ed416	322	"j_last_flush_trans_id: \t%u\n"
bd4c625c LT	323	"j_trans_start_time: \t%li\n"
	324	"j_list_bitmap_index: \t%i\n"
	325	"j_must_wait: \t%i\n"
	326	"j_next_full_flush: \t%i\n"
	327	"j_next_async_flush: \t%i\n"
	328	"j_cnode_used: \t%i\n" "j_cnode_free: \t%i\n" "\n"
	329	/* reiserfs_proc_info_data_t.journal fields */
	330	"in_journal: \t%12lu\n"
	331	"in_journal_bitmap: \t%12lu\n"
	332	"in_journal_reusable: \t%12lu\n"
	333	"lock_journal: \t%12lu\n"
	334	"lock_journal_wait: \t%12lu\n"
	335	"journal_begin: \t%12lu\n"
	336	"journal_relock_writers: \t%12lu\n"
	337	"journal_relock_wcount: \t%12lu\n"
	338	"mark_dirty: \t%12lu\n"
	339	"mark_dirty_already: \t%12lu\n"
	340	"mark_dirty_notjournal: \t%12lu\n"
	341	"restore_prepared: \t%12lu\n"
	342	"prepare: \t%12lu\n"
	343	"prepare_retry: \t%12lu\n",
	344	DJP(jp_journal_1st_block),
	345	bdevname(SB_JOURNAL(sb)->j_dev_bd, b),
	346	DJP(jp_journal_dev),
	347	DJP(jp_journal_size),
	348	DJP(jp_journal_trans_max),
	349	DJP(jp_journal_magic),
	350	DJP(jp_journal_max_batch),
	351	SB_JOURNAL(sb)->j_max_commit_age,
	352	DJP(jp_journal_max_trans_age),
	353	JF(j_1st_reserved_block),
	354	JF(j_state),
	355	JF(j_trans_id),
	356	JF(j_mount_id),
	357	JF(j_start),
	358	JF(j_len),
	359	JF(j_len_alloc),
	360	atomic_read(&r->s_journal->j_wcount),
	361	JF(j_bcount),
	362	JF(j_first_unflushed_offset),
	363	JF(j_last_flush_trans_id),
	364	JF(j_trans_start_time),
	365	JF(j_list_bitmap_index),
	366	JF(j_must_wait),
	367	JF(j_next_full_flush),
	368	JF(j_next_async_flush),
	369	JF(j_cnode_used),
	370	JF(j_cnode_free),
	371	SFPJ(in_journal),
	372	SFPJ(in_journal_bitmap),
	373	SFPJ(in_journal_reusable),
	374	SFPJ(lock_journal),
	375	SFPJ(lock_journal_wait),
	376	SFPJ(journal_being),
	377	SFPJ(journal_relock_writers),
	378	SFPJ(journal_relock_wcount),
	379	SFPJ(mark_dirty),
	380	SFPJ(mark_dirty_already),
	381	SFPJ(mark_dirty_notjournal),
	382	SFPJ(restore_prepared), SFPJ(prepare), SFPJ(prepare_retry)
	383	);
1da177e4 LT	384	return 0;
	385	}
	386
	387	/* iterator */
	388	static int test_sb(struct super_block sb, void data)
	389	{
	390	return data == sb;
	391	}
	392
	393	static int set_sb(struct super_block sb, void data)
	394	{
	395	return -ENOENT;
	396	}
	397
bd4c625c	398	static void r_start(struct seq_file m, loff_t * pos)
1da177e4 LT	399	{
	400	struct proc_dir_entry *de = m->private;
	401	struct super_block *s = de->parent->data;
	402	loff_t l = *pos;
	403
	404	if (l)
	405	return NULL;
	406
	407	if (IS_ERR(sget(&reiserfs_fs_type, test_sb, set_sb, s)))
	408	return NULL;
	409
	410	up_write(&s->s_umount);
1da177e4 LT	411	return s;
	412	}
	413
bd4c625c	414	static void r_next(struct seq_file m, void v, loff_t pos)
1da177e4 LT	415	{
	416	++*pos;
	417	if (v)
	418	deactivate_super(v);
	419	return NULL;
	420	}
	421
	422	static void r_stop(struct seq_file m, void v)
	423	{
	424	if (v)
	425	deactivate_super(v);
	426	}
	427
	428	static int r_show(struct seq_file m, void v)
	429	{
	430	struct proc_dir_entry *de = m->private;
bd4c625c	431	int (show) (struct seq_file , struct super_block *) = de->data;
1da177e4 LT	432	return show(m, v);
	433	}
	434
ec26e117	435	static const struct seq_operations r_ops = {
1da177e4 LT	436	.start = r_start,
	437	.next = r_next,
	438	.stop = r_stop,
	439	.show = r_show,
	440	};
	441
	442	static int r_open(struct inode inode, struct file file)
	443	{
	444	int ret = seq_open(file, &r_ops);
	445
	446	if (!ret) {
	447	struct seq_file *m = file->private_data;
	448	m->private = PDE(inode);
	449	}
	450	return ret;
	451	}
	452
4b6f5d20	453	static const struct file_operations r_file_operations = {
bd4c625c LT	454	.open = r_open,
	455	.read = seq_read,
	456	.llseek = seq_lseek,
	457	.release = seq_release,
19b4fc52	458	.owner = THIS_MODULE,
1da177e4 LT	459	};
	460
	461	static struct proc_dir_entry *proc_info_root = NULL;
	462	static const char proc_info_root_name[] = "fs/reiserfs";
	463
	464	static void add_file(struct super_block sb, char name,
bd4c625c	465	int (func) (struct seq_file , struct super_block *))
1da177e4	466	{
19b4fc52 DL	467	proc_create_data(name, 0, REISERFS_SB(sb)->procdir,
19b4fc52 DL	468	&r_file_operations, func);
1da177e4 LT	469	}
1da177e4 LT	470
bd4c625c	471	int reiserfs_proc_info_init(struct super_block *sb)
1da177e4	472	{
6fbe82a9 JM	473	char b[BDEVNAME_SIZE];
	474	char *s;
	475
	476	/* Some block devices use /'s */
	477	strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE);
	478	s = strchr(b, '/');
	479	if (s)
	480	*s = '!';
	481
bd4c625c	482	spin_lock_init(&__PINFO(sb).lock);
6fbe82a9	483	REISERFS_SB(sb)->procdir = proc_mkdir(b, proc_info_root);
bd4c625c	484	if (REISERFS_SB(sb)->procdir) {
1da177e4 LT	485	REISERFS_SB(sb)->procdir->data = sb;
	486	add_file(sb, "version", show_version);
	487	add_file(sb, "super", show_super);
	488	add_file(sb, "per-level", show_per_level);
	489	add_file(sb, "bitmap", show_bitmap);
	490	add_file(sb, "on-disk-super", show_on_disk_super);
	491	add_file(sb, "oidmap", show_oidmap);
	492	add_file(sb, "journal", show_journal);
	493	return 0;
	494	}
45b03d5e	495	reiserfs_warning(sb, "cannot create /proc/%s/%s",
6fbe82a9	496	proc_info_root_name, b);
1da177e4 LT	497	return 1;
	498	}
	499
bd4c625c	500	int reiserfs_proc_info_done(struct super_block *sb)
1da177e4 LT	501	{
1da177e4 LT	502	struct proc_dir_entry *de = REISERFS_SB(sb)->procdir;
6fbe82a9 JM	503	char b[BDEVNAME_SIZE];
	504	char *s;
	505
	506	/* Some block devices use /'s */
	507	strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE);
	508	s = strchr(b, '/');
	509	if (s)
	510	*s = '!';
	511
1da177e4 LT	512	if (de) {
	513	remove_proc_entry("journal", de);
	514	remove_proc_entry("oidmap", de);
	515	remove_proc_entry("on-disk-super", de);
	516	remove_proc_entry("bitmap", de);
	517	remove_proc_entry("per-level", de);
	518	remove_proc_entry("super", de);
	519	remove_proc_entry("version", de);
	520	}
bd4c625c LT	521	spin_lock(&__PINFO(sb).lock);
	522	__PINFO(sb).exiting = 1;
	523	spin_unlock(&__PINFO(sb).lock);
	524	if (proc_info_root) {
6fbe82a9	525	remove_proc_entry(b, proc_info_root);
1da177e4 LT	526	REISERFS_SB(sb)->procdir = NULL;
	527	}
	528	return 0;
	529	}
	530
bd4c625c	531	int reiserfs_proc_info_global_init(void)
1da177e4	532	{
bd4c625c	533	if (proc_info_root == NULL) {
1da177e4	534	proc_info_root = proc_mkdir(proc_info_root_name, NULL);
99b76233	535	if (!proc_info_root) {
45b03d5e	536	reiserfs_warning(NULL, "cannot create /proc/%s",
bd4c625c	537	proc_info_root_name);
1da177e4 LT	538	return 1;
	539	}
	540	}
	541	return 0;
	542	}
	543
bd4c625c	544	int reiserfs_proc_info_global_done(void)
1da177e4	545	{
bd4c625c	546	if (proc_info_root != NULL) {
1da177e4 LT	547	proc_info_root = NULL;
	548	remove_proc_entry(proc_info_root_name, NULL);
	549	}
	550	return 0;
	551	}
1da177e4	552	/*
1da177e4 LT	553	* Revision 1.1.8.2 2001/07/15 17:08:42 god
	554	* . use get_super() in procfs.c
	555	* . remove remove_save_link() from reiserfs_do_truncate()
	556	*
	557	* I accept terms and conditions stated in the Legal Agreement
	558	* (available at http://www.namesys.com/legalese.html)
	559	*
	560	* Revision 1.1.8.1 2001/07/11 16:48:50 god
	561	* proc info support
	562	*
	563	* I accept terms and conditions stated in the Legal Agreement
	564	* (available at http://www.namesys.com/legalese.html)
	565	*
	566	*/
	567
0222e657	568	/*
1da177e4 LT	569	* Make Linus happy.
	570	* Local variables:
	571	* c-indentation-style: "K&R"
	572	* mode-name: "LC"
	573	* c-basic-offset: 8
	574	* tab-width: 8
	575	* End:
	576	*/