[linux.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 [email protected] for PGC */

/* $Id: procfs.c,v 1.1.8.2 2001/07/15 17:08:42 god Exp $ */

#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>

#ifdef CONFIG_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) ?				\
                         (__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%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 const 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)
{
	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->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, 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;
}

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:
 */
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 [email protected] for PGC */
	10
	11	/* $Id: procfs.c,v 1.1.8.2 2001/07/15 17:08:42 god Exp $ */
	12
1da177e4 LT	13	#include <linux/module.h>
	14	#include <linux/time.h>
	15	#include <linux/seq_file.h>
	16	#include <asm/uaccess.h>
	17	#include <linux/reiserfs_fs.h>
	18	#include <linux/reiserfs_fs_sb.h>
1da177e4 LT	19	#include <linux/init.h>
	20	#include <linux/proc_fs.h>
	21
f87367a6	22	#ifdef CONFIG_REISERFS_PROC_INFO
1da177e4 LT	23
	24	/*
	25	* LOCKING:
	26	*
	27	* We rely on new Alexander Viro's super-block locking.
	28	*
	29	*/
	30
	31	static int show_version(struct seq_file m, struct super_block sb)
	32	{
	33	char *format;
bd4c625c LT	34
bd4c625c LT	35	if (REISERFS_SB(sb)->s_properties & (1 << REISERFS_3_6)) {
1da177e4	36	format = "3.6";
bd4c625c	37	} else if (REISERFS_SB(sb)->s_properties & (1 << REISERFS_3_5)) {
1da177e4 LT	38	format = "3.5";
	39	} else {
	40	format = "unknown";
	41	}
	42
bd4c625c	43	seq_printf(m, "%s format\twith checks %s\n", format,
1da177e4	44	#if defined( CONFIG_REISERFS_CHECK )
bd4c625c	45	"on"
1da177e4	46	#else
bd4c625c	47	"off"
1da177e4	48	#endif
bd4c625c	49	);
1da177e4 LT	50	return 0;
	51	}
	52
bd4c625c LT	53	int reiserfs_global_version_in_proc(char buffer, char *start, off_t offset,
bd4c625c LT	54	int count, int eof, void data)
1da177e4 LT	55	{
	56	*start = buffer;
	57	*eof = 1;
	58	return 0;
	59	}
	60
	61	#define SF( x ) ( r -> x )
	62	#define SFP( x ) SF( s_proc_info_data.x )
	63	#define SFPL( x ) SFP( x[ level ] )
	64	#define SFPF( x ) SFP( scan_bitmap.x )
	65	#define SFPJ( x ) SFP( journal.x )
	66
	67	#define D2C( x ) le16_to_cpu( x )
	68	#define D4C( x ) le32_to_cpu( x )
	69	#define DF( x ) D2C( rs -> s_v1.x )
	70	#define DFL( x ) D4C( rs -> s_v1.x )
	71
	72	#define objectid_map( s, rs ) (old_format_only (s) ? \
3e8962be AV	73	(__le32 )((struct reiserfs_super_block_v1 )rs + 1) : \
3e8962be AV	74	(__le32 *)(rs + 1))
1da177e4 LT	75	#define MAP( i ) D4C( objectid_map( sb, rs )[ i ] )
	76
	77	#define DJF( x ) le32_to_cpu( rs -> x )
	78	#define DJV( x ) le32_to_cpu( s_v1 -> x )
bd4c625c	79	#define DJP( x ) le32_to_cpu( jp -> x )
1da177e4 LT	80	#define JF( x ) ( r -> s_journal -> x )
	81
	82	static int show_super(struct seq_file m, struct super_block sb)
	83	{
	84	struct reiserfs_sb_info *r = REISERFS_SB(sb);
bd4c625c LT	85
	86	seq_printf(m, "state: \t%s\n"
	87	"mount options: \t%s%s%s%s%s%s%s%s%s%s%s\n"
	88	"gen. counter: \t%i\n"
bd4c625c LT	89	"s_disk_reads: \t%i\n"
	90	"s_disk_writes: \t%i\n"
	91	"s_fix_nodes: \t%i\n"
	92	"s_do_balance: \t%i\n"
	93	"s_unneeded_left_neighbor: \t%i\n"
	94	"s_good_search_by_key_reada: \t%i\n"
	95	"s_bmaps: \t%i\n"
	96	"s_bmaps_without_search: \t%i\n"
	97	"s_direct2indirect: \t%i\n"
	98	"s_indirect2direct: \t%i\n"
	99	"\n"
	100	"max_hash_collisions: \t%i\n"
	101	"breads: \t%lu\n"
	102	"bread_misses: \t%lu\n"
	103	"search_by_key: \t%lu\n"
	104	"search_by_key_fs_changed: \t%lu\n"
	105	"search_by_key_restarted: \t%lu\n"
	106	"insert_item_restarted: \t%lu\n"
	107	"paste_into_item_restarted: \t%lu\n"
	108	"cut_from_item_restarted: \t%lu\n"
	109	"delete_solid_item_restarted: \t%lu\n"
	110	"delete_item_restarted: \t%lu\n"
	111	"leaked_oid: \t%lu\n"
	112	"leaves_removable: \t%lu\n",
	113	SF(s_mount_state) == REISERFS_VALID_FS ?
	114	"REISERFS_VALID_FS" : "REISERFS_ERROR_FS",
	115	reiserfs_r5_hash(sb) ? "FORCE_R5 " : "",
	116	reiserfs_rupasov_hash(sb) ? "FORCE_RUPASOV " : "",
	117	reiserfs_tea_hash(sb) ? "FORCE_TEA " : "",
	118	reiserfs_hash_detect(sb) ? "DETECT_HASH " : "",
	119	reiserfs_no_border(sb) ? "NO_BORDER " : "BORDER ",
	120	reiserfs_no_unhashed_relocation(sb) ?
	121	"NO_UNHASHED_RELOCATION " : "",
	122	reiserfs_hashed_relocation(sb) ? "UNHASHED_RELOCATION " : "",
	123	reiserfs_test4(sb) ? "TEST4 " : "",
	124	have_large_tails(sb) ? "TAILS " : have_small_tails(sb) ?
	125	"SMALL_TAILS " : "NO_TAILS ",
	126	replay_only(sb) ? "REPLAY_ONLY " : "",
	127	convert_reiserfs(sb) ? "CONV " : "",
d739b42b	128	atomic_read(&r->s_generation_counter),
bd4c625c LT	129	SF(s_disk_reads), SF(s_disk_writes), SF(s_fix_nodes),
	130	SF(s_do_balance), SF(s_unneeded_left_neighbor),
	131	SF(s_good_search_by_key_reada), SF(s_bmaps),
	132	SF(s_bmaps_without_search), SF(s_direct2indirect),
	133	SF(s_indirect2direct), SFP(max_hash_collisions), SFP(breads),
	134	SFP(bread_miss), SFP(search_by_key),
	135	SFP(search_by_key_fs_changed), SFP(search_by_key_restarted),
	136	SFP(insert_item_restarted), SFP(paste_into_item_restarted),
	137	SFP(cut_from_item_restarted),
	138	SFP(delete_solid_item_restarted), SFP(delete_item_restarted),
	139	SFP(leaked_oid), SFP(leaves_removable));
1da177e4 LT	140
	141	return 0;
	142	}
	143
	144	static int show_per_level(struct seq_file m, struct super_block sb)
	145	{
	146	struct reiserfs_sb_info *r = REISERFS_SB(sb);
	147	int level;
	148
bd4c625c LT	149	seq_printf(m, "level\t"
	150	" balances"
	151	" [sbk: reads"
	152	" fs_changed"
	153	" restarted]"
	154	" free space"
	155	" items"
	156	" can_remove"
	157	" lnum"
	158	" rnum"
	159	" lbytes"
	160	" rbytes"
	161	" get_neig"
	162	" get_neig_res" " need_l_neig" " need_r_neig" "\n");
	163
	164	for (level = 0; level < MAX_HEIGHT; ++level) {
	165	seq_printf(m, "%i\t"
	166	" %12lu"
	167	" %12lu"
	168	" %12lu"
	169	" %12lu"
	170	" %12lu"
	171	" %12lu"
	172	" %12lu"
	173	" %12li"
	174	" %12li"
	175	" %12li"
	176	" %12li"
	177	" %12lu"
	178	" %12lu"
	179	" %12lu"
	180	" %12lu"
	181	"\n",
	182	level,
	183	SFPL(balance_at),
	184	SFPL(sbk_read_at),
	185	SFPL(sbk_fs_changed),
	186	SFPL(sbk_restarted),
	187	SFPL(free_at),
	188	SFPL(items_at),
	189	SFPL(can_node_be_removed),
	190	SFPL(lnum),
	191	SFPL(rnum),
	192	SFPL(lbytes),
	193	SFPL(rbytes),
	194	SFPL(get_neighbors),
	195	SFPL(get_neighbors_restart),
	196	SFPL(need_l_neighbor), SFPL(need_r_neighbor)
	197	);
1da177e4 LT	198	}
	199	return 0;
	200	}
	201
	202	static int show_bitmap(struct seq_file m, struct super_block sb)
	203	{
	204	struct reiserfs_sb_info *r = REISERFS_SB(sb);
	205
bd4c625c LT	206	seq_printf(m, "free_block: %lu\n"
	207	" scan_bitmap:"
	208	" wait"
	209	" bmap"
	210	" retry"
	211	" stolen"
	212	" journal_hint"
	213	"journal_nohint"
	214	"\n"
	215	" %14lu"
	216	" %14lu"
	217	" %14lu"
	218	" %14lu"
	219	" %14lu"
	220	" %14lu"
	221	" %14lu"
	222	"\n",
	223	SFP(free_block),
	224	SFPF(call),
	225	SFPF(wait),
	226	SFPF(bmap),
	227	SFPF(retry),
	228	SFPF(stolen),
	229	SFPF(in_journal_hint), SFPF(in_journal_nohint));
1da177e4 LT	230
	231	return 0;
	232	}
	233
	234	static int show_on_disk_super(struct seq_file m, struct super_block sb)
	235	{
	236	struct reiserfs_sb_info *sb_info = REISERFS_SB(sb);
bd4c625c LT	237	struct reiserfs_super_block *rs = sb_info->s_rs;
	238	int hash_code = DFL(s_hash_function_code);
	239	__u32 flags = DJF(s_flags);
	240
	241	seq_printf(m, "block_count: \t%i\n"
	242	"free_blocks: \t%i\n"
	243	"root_block: \t%i\n"
	244	"blocksize: \t%i\n"
	245	"oid_maxsize: \t%i\n"
	246	"oid_cursize: \t%i\n"
	247	"umount_state: \t%i\n"
	248	"magic: \t%10.10s\n"
	249	"fs_state: \t%i\n"
	250	"hash: \t%s\n"
	251	"tree_height: \t%i\n"
	252	"bmap_nr: \t%i\n"
	253	"version: \t%i\n"
	254	"flags: \t%x[%s]\n"
	255	"reserved_for_journal: \t%i\n",
	256	DFL(s_block_count),
	257	DFL(s_free_blocks),
	258	DFL(s_root_block),
	259	DF(s_blocksize),
	260	DF(s_oid_maxsize),
	261	DF(s_oid_cursize),
	262	DF(s_umount_state),
	263	rs->s_v1.s_magic,
	264	DF(s_fs_state),
	265	hash_code == TEA_HASH ? "tea" :
	266	(hash_code == YURA_HASH) ? "rupasov" :
	267	(hash_code == R5_HASH) ? "r5" :
	268	(hash_code == UNSET_HASH) ? "unset" : "unknown",
	269	DF(s_tree_height),
	270	DF(s_bmap_nr),
	271	DF(s_version), flags, (flags & reiserfs_attrs_cleared)
	272	? "attrs_cleared" : "", DF(s_reserved_for_journal));
1da177e4 LT	273
	274	return 0;
	275	}
	276
	277	static int show_oidmap(struct seq_file m, struct super_block sb)
	278	{
	279	struct reiserfs_sb_info *sb_info = REISERFS_SB(sb);
bd4c625c LT	280	struct reiserfs_super_block *rs = sb_info->s_rs;
bd4c625c LT	281	unsigned int mapsize = le16_to_cpu(rs->s_v1.s_oid_cursize);
1da177e4 LT	282	unsigned long total_used = 0;
	283	int i;
	284
bd4c625c	285	for (i = 0; i < mapsize; ++i) {
1da177e4 LT	286	__u32 right;
1da177e4 LT	287
bd4c625c	288	right = (i == mapsize - 1) ? MAX_KEY_OBJECTID : MAP(i + 1);
1da177e4	289	seq_printf(m, "%s: [ %x .. %x )\n",
bd4c625c LT	290	(i & 1) ? "free" : "used", MAP(i), right);
	291	if (!(i & 1)) {
	292	total_used += right - MAP(i);
1da177e4 LT	293	}
	294	}
	295	#if defined( REISERFS_USE_OIDMAPF )
bd4c625c	296	if (sb_info->oidmap.use_file && (sb_info->oidmap.mapf != NULL)) {
1fc5adbd	297	loff_t size = sb_info->oidmap.mapf->f_path.dentry->d_inode->i_size;
bd4c625c	298	total_used += size / sizeof(reiserfs_oidinterval_d_t);
1da177e4 LT	299	}
1da177e4 LT	300	#endif
bd4c625c LT	301	seq_printf(m, "total: \t%i [%i/%i] used: %lu [exact]\n",
	302	mapsize,
	303	mapsize, le16_to_cpu(rs->s_v1.s_oid_maxsize), total_used);
1da177e4 LT	304	return 0;
	305	}
	306
	307	static int show_journal(struct seq_file m, struct super_block sb)
	308	{
	309	struct reiserfs_sb_info *r = REISERFS_SB(sb);
bd4c625c	310	struct reiserfs_super_block *rs = r->s_rs;
1da177e4 LT	311	struct journal_params *jp = &rs->s_v1.s_journal;
1da177e4 LT	312	char b[BDEVNAME_SIZE];
bd4c625c LT	313
	314	seq_printf(m, /* on-disk fields */
	315	"jp_journal_1st_block: \t%i\n"
	316	"jp_journal_dev: \t%s[%x]\n"
	317	"jp_journal_size: \t%i\n"
	318	"jp_journal_trans_max: \t%i\n"
	319	"jp_journal_magic: \t%i\n"
	320	"jp_journal_max_batch: \t%i\n"
	321	"jp_journal_max_commit_age: \t%i\n"
	322	"jp_journal_max_trans_age: \t%i\n"
	323	/* incore fields */
	324	"j_1st_reserved_block: \t%i\n"
	325	"j_state: \t%li\n"
	326	"j_trans_id: \t%lu\n"
	327	"j_mount_id: \t%lu\n"
	328	"j_start: \t%lu\n"
	329	"j_len: \t%lu\n"
	330	"j_len_alloc: \t%lu\n"
	331	"j_wcount: \t%i\n"
	332	"j_bcount: \t%lu\n"
	333	"j_first_unflushed_offset: \t%lu\n"
	334	"j_last_flush_trans_id: \t%lu\n"
	335	"j_trans_start_time: \t%li\n"
	336	"j_list_bitmap_index: \t%i\n"
	337	"j_must_wait: \t%i\n"
	338	"j_next_full_flush: \t%i\n"
	339	"j_next_async_flush: \t%i\n"
	340	"j_cnode_used: \t%i\n" "j_cnode_free: \t%i\n" "\n"
	341	/* reiserfs_proc_info_data_t.journal fields */
	342	"in_journal: \t%12lu\n"
	343	"in_journal_bitmap: \t%12lu\n"
	344	"in_journal_reusable: \t%12lu\n"
	345	"lock_journal: \t%12lu\n"
	346	"lock_journal_wait: \t%12lu\n"
	347	"journal_begin: \t%12lu\n"
	348	"journal_relock_writers: \t%12lu\n"
	349	"journal_relock_wcount: \t%12lu\n"
	350	"mark_dirty: \t%12lu\n"
	351	"mark_dirty_already: \t%12lu\n"
	352	"mark_dirty_notjournal: \t%12lu\n"
	353	"restore_prepared: \t%12lu\n"
	354	"prepare: \t%12lu\n"
	355	"prepare_retry: \t%12lu\n",
	356	DJP(jp_journal_1st_block),
	357	bdevname(SB_JOURNAL(sb)->j_dev_bd, b),
	358	DJP(jp_journal_dev),
	359	DJP(jp_journal_size),
	360	DJP(jp_journal_trans_max),
	361	DJP(jp_journal_magic),
	362	DJP(jp_journal_max_batch),
	363	SB_JOURNAL(sb)->j_max_commit_age,
	364	DJP(jp_journal_max_trans_age),
	365	JF(j_1st_reserved_block),
	366	JF(j_state),
	367	JF(j_trans_id),
	368	JF(j_mount_id),
	369	JF(j_start),
	370	JF(j_len),
	371	JF(j_len_alloc),
	372	atomic_read(&r->s_journal->j_wcount),
	373	JF(j_bcount),
	374	JF(j_first_unflushed_offset),
	375	JF(j_last_flush_trans_id),
	376	JF(j_trans_start_time),
377	JF(j_list_bitmap_index),
378	JF(j_must_wait),
379	JF(j_next_full_flush),
380	JF(j_next_async_flush),
381	JF(j_cnode_used),
382	JF(j_cnode_free),
383	SFPJ(in_journal),
384	SFPJ(in_journal_bitmap),
385	SFPJ(in_journal_reusable),
386	SFPJ(lock_journal),
387	SFPJ(lock_journal_wait),
388	SFPJ(journal_being),
389	SFPJ(journal_relock_writers),
390	SFPJ(journal_relock_wcount),
391	SFPJ(mark_dirty),
392	SFPJ(mark_dirty_already),
393	SFPJ(mark_dirty_notjournal),
394	SFPJ(restore_prepared), SFPJ(prepare), SFPJ(prepare_retry)
395	);
1da177e4 LT	396	return 0;
	397	}
	398
	399	/* iterator */
	400	static int test_sb(struct super_block sb, void data)
	401	{
	402	return data == sb;
	403	}
	404
	405	static int set_sb(struct super_block sb, void data)
	406	{
	407	return -ENOENT;
	408	}
	409
bd4c625c	410	static void r_start(struct seq_file m, loff_t * pos)
1da177e4 LT	411	{
	412	struct proc_dir_entry *de = m->private;
	413	struct super_block *s = de->parent->data;
	414	loff_t l = *pos;
	415
	416	if (l)
	417	return NULL;
	418
	419	if (IS_ERR(sget(&reiserfs_fs_type, test_sb, set_sb, s)))
	420	return NULL;
	421
	422	up_write(&s->s_umount);
	423
	424	if (de->deleted) {
	425	deactivate_super(s);
	426	return NULL;
	427	}
	428
	429	return s;
	430	}
	431
bd4c625c	432	static void r_next(struct seq_file m, void v, loff_t pos)
1da177e4 LT	433	{
	434	++*pos;
	435	if (v)
	436	deactivate_super(v);
	437	return NULL;
	438	}
	439
	440	static void r_stop(struct seq_file m, void v)
	441	{
	442	if (v)
	443	deactivate_super(v);
	444	}
	445
	446	static int r_show(struct seq_file m, void v)
	447	{
	448	struct proc_dir_entry *de = m->private;
bd4c625c	449	int (show) (struct seq_file , struct super_block *) = de->data;
1da177e4 LT	450	return show(m, v);
	451	}
	452
	453	static struct seq_operations r_ops = {
	454	.start = r_start,
	455	.next = r_next,
	456	.stop = r_stop,
	457	.show = r_show,
	458	};
	459
	460	static int r_open(struct inode inode, struct file file)
	461	{
	462	int ret = seq_open(file, &r_ops);
	463
	464	if (!ret) {
	465	struct seq_file *m = file->private_data;
	466	m->private = PDE(inode);
	467	}
	468	return ret;
	469	}
	470
4b6f5d20	471	static const struct file_operations r_file_operations = {
bd4c625c LT	472	.open = r_open,
	473	.read = seq_read,
	474	.llseek = seq_lseek,
	475	.release = seq_release,
1da177e4 LT	476	};
	477
	478	static struct proc_dir_entry *proc_info_root = NULL;
	479	static const char proc_info_root_name[] = "fs/reiserfs";
	480
	481	static void add_file(struct super_block sb, char name,
bd4c625c	482	int (func) (struct seq_file , struct super_block *))
1da177e4 LT	483	{
	484	struct proc_dir_entry *de;
	485	de = create_proc_entry(name, 0, REISERFS_SB(sb)->procdir);
	486	if (de) {
	487	de->data = func;
	488	de->proc_fops = &r_file_operations;
	489	}
	490	}
	491
bd4c625c	492	int reiserfs_proc_info_init(struct super_block *sb)
1da177e4	493	{
6fbe82a9 JM	494	char b[BDEVNAME_SIZE];
	495	char *s;
	496
	497	/* Some block devices use /'s */
	498	strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE);
	499	s = strchr(b, '/');
	500	if (s)
	501	*s = '!';
	502
bd4c625c	503	spin_lock_init(&__PINFO(sb).lock);
6fbe82a9	504	REISERFS_SB(sb)->procdir = proc_mkdir(b, proc_info_root);
bd4c625c	505	if (REISERFS_SB(sb)->procdir) {
1da177e4 LT	506	REISERFS_SB(sb)->procdir->owner = THIS_MODULE;
	507	REISERFS_SB(sb)->procdir->data = sb;
	508	add_file(sb, "version", show_version);
	509	add_file(sb, "super", show_super);
	510	add_file(sb, "per-level", show_per_level);
	511	add_file(sb, "bitmap", show_bitmap);
	512	add_file(sb, "on-disk-super", show_on_disk_super);
	513	add_file(sb, "oidmap", show_oidmap);
	514	add_file(sb, "journal", show_journal);
	515	return 0;
	516	}
	517	reiserfs_warning(sb, "reiserfs: cannot create /proc/%s/%s",
6fbe82a9	518	proc_info_root_name, b);
1da177e4 LT	519	return 1;
	520	}
	521
bd4c625c	522	int reiserfs_proc_info_done(struct super_block *sb)
1da177e4 LT	523	{
1da177e4 LT	524	struct proc_dir_entry *de = REISERFS_SB(sb)->procdir;
6fbe82a9 JM	525	char b[BDEVNAME_SIZE];
	526	char *s;
	527
	528	/* Some block devices use /'s */
	529	strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE);
	530	s = strchr(b, '/');
	531	if (s)
	532	*s = '!';
	533
1da177e4 LT	534	if (de) {
	535	remove_proc_entry("journal", de);
	536	remove_proc_entry("oidmap", de);
	537	remove_proc_entry("on-disk-super", de);
	538	remove_proc_entry("bitmap", de);
	539	remove_proc_entry("per-level", de);
	540	remove_proc_entry("super", de);
	541	remove_proc_entry("version", de);
	542	}
bd4c625c LT	543	spin_lock(&__PINFO(sb).lock);
	544	__PINFO(sb).exiting = 1;
	545	spin_unlock(&__PINFO(sb).lock);
	546	if (proc_info_root) {
6fbe82a9	547	remove_proc_entry(b, proc_info_root);
1da177e4 LT	548	REISERFS_SB(sb)->procdir = NULL;
	549	}
	550	return 0;
	551	}
	552
bd4c625c LT	553	struct proc_dir_entry reiserfs_proc_register_global(char name,
bd4c625c LT	554	read_proc_t * func)
1da177e4	555	{
bd4c625c LT	556	return (proc_info_root) ? create_proc_read_entry(name, 0,
	557	proc_info_root,
	558	func, NULL) : NULL;
1da177e4 LT	559	}
1da177e4 LT	560
bd4c625c	561	void reiserfs_proc_unregister_global(const char *name)
1da177e4	562	{
bd4c625c	563	remove_proc_entry(name, proc_info_root);
1da177e4 LT	564	}
1da177e4 LT	565
bd4c625c	566	int reiserfs_proc_info_global_init(void)
1da177e4	567	{
bd4c625c	568	if (proc_info_root == NULL) {
1da177e4	569	proc_info_root = proc_mkdir(proc_info_root_name, NULL);
bd4c625c LT	570	if (proc_info_root) {
bd4c625c LT	571	proc_info_root->owner = THIS_MODULE;
1da177e4	572	} else {
bd4c625c LT	573	reiserfs_warning(NULL,
	574	"reiserfs: cannot create /proc/%s",
	575	proc_info_root_name);
1da177e4 LT	576	return 1;
	577	}
	578	}
	579	return 0;
	580	}
	581
bd4c625c	582	int reiserfs_proc_info_global_done(void)
1da177e4	583	{
bd4c625c	584	if (proc_info_root != NULL) {
1da177e4 LT	585	proc_info_root = NULL;
	586	remove_proc_entry(proc_info_root_name, NULL);
	587	}
	588	return 0;
	589	}
	590
	591	/* REISERFS_PROC_INFO */
	592	#else
	593
bd4c625c LT	594	int reiserfs_proc_info_init(struct super_block *sb)
	595	{
	596	return 0;
	597	}
	598	int reiserfs_proc_info_done(struct super_block *sb)
	599	{
	600	return 0;
	601	}
1da177e4	602
bd4c625c LT	603	struct proc_dir_entry reiserfs_proc_register_global(char name,
	604	read_proc_t * func)
	605	{
	606	return NULL;
	607	}
1da177e4	608
bd4c625c LT	609	void reiserfs_proc_unregister_global(const char *name)
	610	{;
	611	}
1da177e4	612
bd4c625c LT	613	int reiserfs_proc_info_global_init(void)
	614	{
	615	return 0;
	616	}
	617	int reiserfs_proc_info_global_done(void)
	618	{
	619	return 0;
	620	}
1da177e4	621
bd4c625c LT	622	int reiserfs_global_version_in_proc(char buffer, char *start,
	623	off_t offset,
	624	int count, int eof, void data)
	625	{
	626	return 0;
	627	}
1da177e4 LT	628
	629	/* REISERFS_PROC_INFO */
	630	#endif
	631
	632	/*
	633	* $Log: procfs.c,v $
	634	* Revision 1.1.8.2 2001/07/15 17:08:42 god
	635	* . use get_super() in procfs.c
	636	* . remove remove_save_link() from reiserfs_do_truncate()
	637	*
	638	* I accept terms and conditions stated in the Legal Agreement
	639	* (available at http://www.namesys.com/legalese.html)
	640	*
	641	* Revision 1.1.8.1 2001/07/11 16:48:50 god
	642	* proc info support
	643	*
	644	* I accept terms and conditions stated in the Legal Agreement
	645	* (available at http://www.namesys.com/legalese.html)
	646	*
	647	*/
	648
	649	/*
	650	* Make Linus happy.
	651	* Local variables:
	652	* c-indentation-style: "K&R"
	653	* mode-name: "LC"
	654	* c-basic-offset: 8
	655	* tab-width: 8
	656	* End:
	657	*/