[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>

#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%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->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, "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, "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

/*
 * 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
f87367a6	20	#ifdef CONFIG_REISERFS_PROC_INFO
1da177e4 LT	21
	22	/*
	23	* LOCKING:
	24	*
	25	* We rely on new Alexander Viro's super-block locking.
	26	*
	27	*/
	28
	29	static int show_version(struct seq_file m, struct super_block sb)
	30	{
	31	char *format;
bd4c625c LT	32
bd4c625c LT	33	if (REISERFS_SB(sb)->s_properties & (1 << REISERFS_3_6)) {
1da177e4	34	format = "3.6";
bd4c625c	35	} else if (REISERFS_SB(sb)->s_properties & (1 << REISERFS_3_5)) {
1da177e4 LT	36	format = "3.5";
	37	} else {
	38	format = "unknown";
	39	}
	40
bd4c625c	41	seq_printf(m, "%s format\twith checks %s\n", format,
1da177e4	42	#if defined( CONFIG_REISERFS_CHECK )
bd4c625c	43	"on"
1da177e4	44	#else
bd4c625c	45	"off"
1da177e4	46	#endif
bd4c625c	47	);
1da177e4 LT	48	return 0;
	49	}
	50
bd4c625c LT	51	int reiserfs_global_version_in_proc(char buffer, char *start, off_t offset,
bd4c625c LT	52	int count, int eof, void data)
1da177e4 LT	53	{
	54	*start = buffer;
	55	*eof = 1;
	56	return 0;
	57	}
	58
	59	#define SF( x ) ( r -> x )
	60	#define SFP( x ) SF( s_proc_info_data.x )
	61	#define SFPL( x ) SFP( x[ level ] )
	62	#define SFPF( x ) SFP( scan_bitmap.x )
	63	#define SFPJ( x ) SFP( journal.x )
	64
	65	#define D2C( x ) le16_to_cpu( x )
	66	#define D4C( x ) le32_to_cpu( x )
	67	#define DF( x ) D2C( rs -> s_v1.x )
	68	#define DFL( x ) D4C( rs -> s_v1.x )
	69
	70	#define objectid_map( s, rs ) (old_format_only (s) ? \
3e8962be AV	71	(__le32 )((struct reiserfs_super_block_v1 )rs + 1) : \
3e8962be AV	72	(__le32 *)(rs + 1))
1da177e4 LT	73	#define MAP( i ) D4C( objectid_map( sb, rs )[ i ] )
	74
	75	#define DJF( x ) le32_to_cpu( rs -> x )
	76	#define DJV( x ) le32_to_cpu( s_v1 -> x )
bd4c625c	77	#define DJP( x ) le32_to_cpu( jp -> x )
1da177e4 LT	78	#define JF( x ) ( r -> s_journal -> x )
	79
	80	static int show_super(struct seq_file m, struct super_block sb)
	81	{
	82	struct reiserfs_sb_info *r = REISERFS_SB(sb);
bd4c625c LT	83
	84	seq_printf(m, "state: \t%s\n"
	85	"mount options: \t%s%s%s%s%s%s%s%s%s%s%s\n"
	86	"gen. counter: \t%i\n"
bd4c625c LT	87	"s_disk_reads: \t%i\n"
	88	"s_disk_writes: \t%i\n"
	89	"s_fix_nodes: \t%i\n"
	90	"s_do_balance: \t%i\n"
	91	"s_unneeded_left_neighbor: \t%i\n"
	92	"s_good_search_by_key_reada: \t%i\n"
	93	"s_bmaps: \t%i\n"
	94	"s_bmaps_without_search: \t%i\n"
	95	"s_direct2indirect: \t%i\n"
	96	"s_indirect2direct: \t%i\n"
	97	"\n"
	98	"max_hash_collisions: \t%i\n"
	99	"breads: \t%lu\n"
	100	"bread_misses: \t%lu\n"
	101	"search_by_key: \t%lu\n"
	102	"search_by_key_fs_changed: \t%lu\n"
	103	"search_by_key_restarted: \t%lu\n"
	104	"insert_item_restarted: \t%lu\n"
	105	"paste_into_item_restarted: \t%lu\n"
	106	"cut_from_item_restarted: \t%lu\n"
	107	"delete_solid_item_restarted: \t%lu\n"
	108	"delete_item_restarted: \t%lu\n"
	109	"leaked_oid: \t%lu\n"
	110	"leaves_removable: \t%lu\n",
	111	SF(s_mount_state) == REISERFS_VALID_FS ?
	112	"REISERFS_VALID_FS" : "REISERFS_ERROR_FS",
	113	reiserfs_r5_hash(sb) ? "FORCE_R5 " : "",
	114	reiserfs_rupasov_hash(sb) ? "FORCE_RUPASOV " : "",
	115	reiserfs_tea_hash(sb) ? "FORCE_TEA " : "",
	116	reiserfs_hash_detect(sb) ? "DETECT_HASH " : "",
	117	reiserfs_no_border(sb) ? "NO_BORDER " : "BORDER ",
	118	reiserfs_no_unhashed_relocation(sb) ?
	119	"NO_UNHASHED_RELOCATION " : "",
	120	reiserfs_hashed_relocation(sb) ? "UNHASHED_RELOCATION " : "",
	121	reiserfs_test4(sb) ? "TEST4 " : "",
	122	have_large_tails(sb) ? "TAILS " : have_small_tails(sb) ?
	123	"SMALL_TAILS " : "NO_TAILS ",
	124	replay_only(sb) ? "REPLAY_ONLY " : "",
	125	convert_reiserfs(sb) ? "CONV " : "",
d739b42b	126	atomic_read(&r->s_generation_counter),
bd4c625c LT	127	SF(s_disk_reads), SF(s_disk_writes), SF(s_fix_nodes),
	128	SF(s_do_balance), SF(s_unneeded_left_neighbor),
	129	SF(s_good_search_by_key_reada), SF(s_bmaps),
	130	SF(s_bmaps_without_search), SF(s_direct2indirect),
	131	SF(s_indirect2direct), SFP(max_hash_collisions), SFP(breads),
	132	SFP(bread_miss), SFP(search_by_key),
	133	SFP(search_by_key_fs_changed), SFP(search_by_key_restarted),
	134	SFP(insert_item_restarted), SFP(paste_into_item_restarted),
	135	SFP(cut_from_item_restarted),
	136	SFP(delete_solid_item_restarted), SFP(delete_item_restarted),
	137	SFP(leaked_oid), SFP(leaves_removable));
1da177e4 LT	138
	139	return 0;
	140	}
	141
	142	static int show_per_level(struct seq_file m, struct super_block sb)
	143	{
	144	struct reiserfs_sb_info *r = REISERFS_SB(sb);
	145	int level;
	146
bd4c625c LT	147	seq_printf(m, "level\t"
	148	" balances"
	149	" [sbk: reads"
	150	" fs_changed"
	151	" restarted]"
	152	" free space"
	153	" items"
	154	" can_remove"
	155	" lnum"
	156	" rnum"
	157	" lbytes"
	158	" rbytes"
	159	" get_neig"
	160	" get_neig_res" " need_l_neig" " need_r_neig" "\n");
	161
	162	for (level = 0; level < MAX_HEIGHT; ++level) {
	163	seq_printf(m, "%i\t"
	164	" %12lu"
	165	" %12lu"
	166	" %12lu"
	167	" %12lu"
	168	" %12lu"
	169	" %12lu"
	170	" %12lu"
	171	" %12li"
	172	" %12li"
	173	" %12li"
	174	" %12li"
	175	" %12lu"
	176	" %12lu"
	177	" %12lu"
	178	" %12lu"
	179	"\n",
	180	level,
	181	SFPL(balance_at),
	182	SFPL(sbk_read_at),
	183	SFPL(sbk_fs_changed),
	184	SFPL(sbk_restarted),
	185	SFPL(free_at),
	186	SFPL(items_at),
	187	SFPL(can_node_be_removed),
	188	SFPL(lnum),
	189	SFPL(rnum),
	190	SFPL(lbytes),
	191	SFPL(rbytes),
	192	SFPL(get_neighbors),
	193	SFPL(get_neighbors_restart),
	194	SFPL(need_l_neighbor), SFPL(need_r_neighbor)
	195	);
1da177e4 LT	196	}
	197	return 0;
	198	}
	199
	200	static int show_bitmap(struct seq_file m, struct super_block sb)
	201	{
	202	struct reiserfs_sb_info *r = REISERFS_SB(sb);
	203
bd4c625c LT	204	seq_printf(m, "free_block: %lu\n"
	205	" scan_bitmap:"
	206	" wait"
	207	" bmap"
	208	" retry"
	209	" stolen"
	210	" journal_hint"
	211	"journal_nohint"
	212	"\n"
	213	" %14lu"
	214	" %14lu"
	215	" %14lu"
	216	" %14lu"
	217	" %14lu"
	218	" %14lu"
	219	" %14lu"
	220	"\n",
	221	SFP(free_block),
	222	SFPF(call),
	223	SFPF(wait),
	224	SFPF(bmap),
	225	SFPF(retry),
	226	SFPF(stolen),
	227	SFPF(in_journal_hint), SFPF(in_journal_nohint));
1da177e4 LT	228
	229	return 0;
	230	}
	231
	232	static int show_on_disk_super(struct seq_file m, struct super_block sb)
	233	{
	234	struct reiserfs_sb_info *sb_info = REISERFS_SB(sb);
bd4c625c LT	235	struct reiserfs_super_block *rs = sb_info->s_rs;
	236	int hash_code = DFL(s_hash_function_code);
	237	__u32 flags = DJF(s_flags);
	238
	239	seq_printf(m, "block_count: \t%i\n"
	240	"free_blocks: \t%i\n"
	241	"root_block: \t%i\n"
	242	"blocksize: \t%i\n"
	243	"oid_maxsize: \t%i\n"
	244	"oid_cursize: \t%i\n"
	245	"umount_state: \t%i\n"
	246	"magic: \t%10.10s\n"
	247	"fs_state: \t%i\n"
	248	"hash: \t%s\n"
	249	"tree_height: \t%i\n"
	250	"bmap_nr: \t%i\n"
	251	"version: \t%i\n"
	252	"flags: \t%x[%s]\n"
	253	"reserved_for_journal: \t%i\n",
	254	DFL(s_block_count),
	255	DFL(s_free_blocks),
	256	DFL(s_root_block),
	257	DF(s_blocksize),
	258	DF(s_oid_maxsize),
	259	DF(s_oid_cursize),
	260	DF(s_umount_state),
	261	rs->s_v1.s_magic,
	262	DF(s_fs_state),
	263	hash_code == TEA_HASH ? "tea" :
	264	(hash_code == YURA_HASH) ? "rupasov" :
	265	(hash_code == R5_HASH) ? "r5" :
	266	(hash_code == UNSET_HASH) ? "unset" : "unknown",
	267	DF(s_tree_height),
	268	DF(s_bmap_nr),
	269	DF(s_version), flags, (flags & reiserfs_attrs_cleared)
	270	? "attrs_cleared" : "", DF(s_reserved_for_journal));
1da177e4 LT	271
	272	return 0;
	273	}
	274
	275	static int show_oidmap(struct seq_file m, struct super_block sb)
	276	{
	277	struct reiserfs_sb_info *sb_info = REISERFS_SB(sb);
bd4c625c LT	278	struct reiserfs_super_block *rs = sb_info->s_rs;
bd4c625c LT	279	unsigned int mapsize = le16_to_cpu(rs->s_v1.s_oid_cursize);
1da177e4 LT	280	unsigned long total_used = 0;
	281	int i;
	282
bd4c625c	283	for (i = 0; i < mapsize; ++i) {
1da177e4 LT	284	__u32 right;
1da177e4 LT	285
bd4c625c	286	right = (i == mapsize - 1) ? MAX_KEY_OBJECTID : MAP(i + 1);
1da177e4	287	seq_printf(m, "%s: [ %x .. %x )\n",
bd4c625c LT	288	(i & 1) ? "free" : "used", MAP(i), right);
	289	if (!(i & 1)) {
	290	total_used += right - MAP(i);
1da177e4 LT	291	}
	292	}
	293	#if defined( REISERFS_USE_OIDMAPF )
bd4c625c	294	if (sb_info->oidmap.use_file && (sb_info->oidmap.mapf != NULL)) {
1fc5adbd	295	loff_t size = sb_info->oidmap.mapf->f_path.dentry->d_inode->i_size;
bd4c625c	296	total_used += size / sizeof(reiserfs_oidinterval_d_t);
1da177e4 LT	297	}
1da177e4 LT	298	#endif
bd4c625c LT	299	seq_printf(m, "total: \t%i [%i/%i] used: %lu [exact]\n",
	300	mapsize,
	301	mapsize, le16_to_cpu(rs->s_v1.s_oid_maxsize), total_used);
1da177e4 LT	302	return 0;
	303	}
	304
	305	static int show_journal(struct seq_file m, struct super_block sb)
	306	{
	307	struct reiserfs_sb_info *r = REISERFS_SB(sb);
bd4c625c	308	struct reiserfs_super_block *rs = r->s_rs;
1da177e4 LT	309	struct journal_params *jp = &rs->s_v1.s_journal;
1da177e4 LT	310	char b[BDEVNAME_SIZE];
bd4c625c LT	311
	312	seq_printf(m, /* on-disk fields */
	313	"jp_journal_1st_block: \t%i\n"
	314	"jp_journal_dev: \t%s[%x]\n"
	315	"jp_journal_size: \t%i\n"
	316	"jp_journal_trans_max: \t%i\n"
	317	"jp_journal_magic: \t%i\n"
	318	"jp_journal_max_batch: \t%i\n"
	319	"jp_journal_max_commit_age: \t%i\n"
	320	"jp_journal_max_trans_age: \t%i\n"
	321	/* incore fields */
	322	"j_1st_reserved_block: \t%i\n"
	323	"j_state: \t%li\n"
600ed416	324	"j_trans_id: \t%u\n"
bd4c625c LT	325	"j_mount_id: \t%lu\n"
	326	"j_start: \t%lu\n"
	327	"j_len: \t%lu\n"
	328	"j_len_alloc: \t%lu\n"
	329	"j_wcount: \t%i\n"
	330	"j_bcount: \t%lu\n"
	331	"j_first_unflushed_offset: \t%lu\n"
600ed416	332	"j_last_flush_trans_id: \t%u\n"
bd4c625c LT	333	"j_trans_start_time: \t%li\n"
	334	"j_list_bitmap_index: \t%i\n"
	335	"j_must_wait: \t%i\n"
	336	"j_next_full_flush: \t%i\n"
	337	"j_next_async_flush: \t%i\n"
	338	"j_cnode_used: \t%i\n" "j_cnode_free: \t%i\n" "\n"
	339	/* reiserfs_proc_info_data_t.journal fields */
	340	"in_journal: \t%12lu\n"
	341	"in_journal_bitmap: \t%12lu\n"
	342	"in_journal_reusable: \t%12lu\n"
	343	"lock_journal: \t%12lu\n"
	344	"lock_journal_wait: \t%12lu\n"
	345	"journal_begin: \t%12lu\n"
	346	"journal_relock_writers: \t%12lu\n"
	347	"journal_relock_wcount: \t%12lu\n"
	348	"mark_dirty: \t%12lu\n"
	349	"mark_dirty_already: \t%12lu\n"
	350	"mark_dirty_notjournal: \t%12lu\n"
	351	"restore_prepared: \t%12lu\n"
	352	"prepare: \t%12lu\n"
	353	"prepare_retry: \t%12lu\n",
	354	DJP(jp_journal_1st_block),
	355	bdevname(SB_JOURNAL(sb)->j_dev_bd, b),
	356	DJP(jp_journal_dev),
	357	DJP(jp_journal_size),
	358	DJP(jp_journal_trans_max),
	359	DJP(jp_journal_magic),
	360	DJP(jp_journal_max_batch),
	361	SB_JOURNAL(sb)->j_max_commit_age,
	362	DJP(jp_journal_max_trans_age),
	363	JF(j_1st_reserved_block),
	364	JF(j_state),
	365	JF(j_trans_id),
	366	JF(j_mount_id),
	367	JF(j_start),
	368	JF(j_len),
	369	JF(j_len_alloc),
	370	atomic_read(&r->s_journal->j_wcount),
	371	JF(j_bcount),
	372	JF(j_first_unflushed_offset),
	373	JF(j_last_flush_trans_id),
	374	JF(j_trans_start_time),
	375	JF(j_list_bitmap_index),
	376	JF(j_must_wait),
	377	JF(j_next_full_flush),
	378	JF(j_next_async_flush),
	379	JF(j_cnode_used),
	380	JF(j_cnode_free),
	381	SFPJ(in_journal),
	382	SFPJ(in_journal_bitmap),
	383	SFPJ(in_journal_reusable),
	384	SFPJ(lock_journal),
	385	SFPJ(lock_journal_wait),
	386	SFPJ(journal_being),
	387	SFPJ(journal_relock_writers),
	388	SFPJ(journal_relock_wcount),
	389	SFPJ(mark_dirty),
	390	SFPJ(mark_dirty_already),
	391	SFPJ(mark_dirty_notjournal),
	392	SFPJ(restore_prepared), SFPJ(prepare), SFPJ(prepare_retry)
	393	);
1da177e4 LT	394	return 0;
	395	}
	396
	397	/* iterator */
	398	static int test_sb(struct super_block sb, void data)
	399	{
	400	return data == sb;
	401	}
	402
	403	static int set_sb(struct super_block sb, void data)
	404	{
	405	return -ENOENT;
	406	}
	407
bd4c625c	408	static void r_start(struct seq_file m, loff_t * pos)
1da177e4 LT	409	{
	410	struct proc_dir_entry *de = m->private;
	411	struct super_block *s = de->parent->data;
	412	loff_t l = *pos;
	413
	414	if (l)
	415	return NULL;
	416
	417	if (IS_ERR(sget(&reiserfs_fs_type, test_sb, set_sb, s)))
	418	return NULL;
	419
	420	up_write(&s->s_umount);
1da177e4 LT	421	return s;
	422	}
	423
bd4c625c	424	static void r_next(struct seq_file m, void v, loff_t pos)
1da177e4 LT	425	{
	426	++*pos;
	427	if (v)
	428	deactivate_super(v);
	429	return NULL;
	430	}
	431
	432	static void r_stop(struct seq_file m, void v)
	433	{
	434	if (v)
	435	deactivate_super(v);
	436	}
	437
	438	static int r_show(struct seq_file m, void v)
	439	{
	440	struct proc_dir_entry *de = m->private;
bd4c625c	441	int (show) (struct seq_file , struct super_block *) = de->data;
1da177e4 LT	442	return show(m, v);
	443	}
	444
ec26e117	445	static const struct seq_operations r_ops = {
1da177e4 LT	446	.start = r_start,
	447	.next = r_next,
	448	.stop = r_stop,
	449	.show = r_show,
	450	};
	451
	452	static int r_open(struct inode inode, struct file file)
	453	{
	454	int ret = seq_open(file, &r_ops);
	455
	456	if (!ret) {
	457	struct seq_file *m = file->private_data;
	458	m->private = PDE(inode);
	459	}
	460	return ret;
	461	}
	462
4b6f5d20	463	static const struct file_operations r_file_operations = {
bd4c625c LT	464	.open = r_open,
	465	.read = seq_read,
	466	.llseek = seq_lseek,
	467	.release = seq_release,
19b4fc52	468	.owner = THIS_MODULE,
1da177e4 LT	469	};
	470
	471	static struct proc_dir_entry *proc_info_root = NULL;
	472	static const char proc_info_root_name[] = "fs/reiserfs";
	473
	474	static void add_file(struct super_block sb, char name,
bd4c625c	475	int (func) (struct seq_file , struct super_block *))
1da177e4	476	{
19b4fc52 DL	477	proc_create_data(name, 0, REISERFS_SB(sb)->procdir,
19b4fc52 DL	478	&r_file_operations, func);
1da177e4 LT	479	}
1da177e4 LT	480
bd4c625c	481	int reiserfs_proc_info_init(struct super_block *sb)
1da177e4	482	{
6fbe82a9 JM	483	char b[BDEVNAME_SIZE];
	484	char *s;
	485
	486	/* Some block devices use /'s */
	487	strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE);
	488	s = strchr(b, '/');
	489	if (s)
	490	*s = '!';
	491
bd4c625c	492	spin_lock_init(&__PINFO(sb).lock);
6fbe82a9	493	REISERFS_SB(sb)->procdir = proc_mkdir(b, proc_info_root);
bd4c625c	494	if (REISERFS_SB(sb)->procdir) {
1da177e4 LT	495	REISERFS_SB(sb)->procdir->owner = THIS_MODULE;
	496	REISERFS_SB(sb)->procdir->data = sb;
	497	add_file(sb, "version", show_version);
	498	add_file(sb, "super", show_super);
	499	add_file(sb, "per-level", show_per_level);
	500	add_file(sb, "bitmap", show_bitmap);
	501	add_file(sb, "on-disk-super", show_on_disk_super);
	502	add_file(sb, "oidmap", show_oidmap);
	503	add_file(sb, "journal", show_journal);
	504	return 0;
	505	}
45b03d5e	506	reiserfs_warning(sb, "cannot create /proc/%s/%s",
6fbe82a9	507	proc_info_root_name, b);
1da177e4 LT	508	return 1;
	509	}
	510
bd4c625c	511	int reiserfs_proc_info_done(struct super_block *sb)
1da177e4 LT	512	{
1da177e4 LT	513	struct proc_dir_entry *de = REISERFS_SB(sb)->procdir;
6fbe82a9 JM	514	char b[BDEVNAME_SIZE];
	515	char *s;
	516
	517	/* Some block devices use /'s */
	518	strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE);
	519	s = strchr(b, '/');
	520	if (s)
	521	*s = '!';
	522
1da177e4 LT	523	if (de) {
	524	remove_proc_entry("journal", de);
	525	remove_proc_entry("oidmap", de);
	526	remove_proc_entry("on-disk-super", de);
	527	remove_proc_entry("bitmap", de);
	528	remove_proc_entry("per-level", de);
	529	remove_proc_entry("super", de);
	530	remove_proc_entry("version", de);
	531	}
bd4c625c LT	532	spin_lock(&__PINFO(sb).lock);
	533	__PINFO(sb).exiting = 1;
	534	spin_unlock(&__PINFO(sb).lock);
	535	if (proc_info_root) {
6fbe82a9	536	remove_proc_entry(b, proc_info_root);
1da177e4 LT	537	REISERFS_SB(sb)->procdir = NULL;
	538	}
	539	return 0;
	540	}
	541
bd4c625c LT	542	struct proc_dir_entry reiserfs_proc_register_global(char name,
bd4c625c LT	543	read_proc_t * func)
1da177e4	544	{
bd4c625c LT	545	return (proc_info_root) ? create_proc_read_entry(name, 0,
	546	proc_info_root,
	547	func, NULL) : NULL;
1da177e4 LT	548	}
1da177e4 LT	549
bd4c625c	550	void reiserfs_proc_unregister_global(const char *name)
1da177e4	551	{
bd4c625c	552	remove_proc_entry(name, proc_info_root);
1da177e4 LT	553	}
1da177e4 LT	554
bd4c625c	555	int reiserfs_proc_info_global_init(void)
1da177e4	556	{
bd4c625c	557	if (proc_info_root == NULL) {
1da177e4	558	proc_info_root = proc_mkdir(proc_info_root_name, NULL);
bd4c625c LT	559	if (proc_info_root) {
bd4c625c LT	560	proc_info_root->owner = THIS_MODULE;
1da177e4	561	} else {
45b03d5e	562	reiserfs_warning(NULL, "cannot create /proc/%s",
bd4c625c	563	proc_info_root_name);
1da177e4 LT	564	return 1;
	565	}
	566	}
	567	return 0;
	568	}
	569
bd4c625c	570	int reiserfs_proc_info_global_done(void)
1da177e4	571	{
bd4c625c	572	if (proc_info_root != NULL) {
1da177e4 LT	573	proc_info_root = NULL;
	574	remove_proc_entry(proc_info_root_name, NULL);
	575	}
	576	return 0;
	577	}
	578
	579	/* REISERFS_PROC_INFO */
	580	#else
	581
bd4c625c LT	582	int reiserfs_proc_info_init(struct super_block *sb)
	583	{
	584	return 0;
	585	}
	586	int reiserfs_proc_info_done(struct super_block *sb)
	587	{
	588	return 0;
	589	}
1da177e4	590
bd4c625c LT	591	struct proc_dir_entry reiserfs_proc_register_global(char name,
	592	read_proc_t * func)
	593	{
	594	return NULL;
	595	}
1da177e4	596
bd4c625c LT	597	void reiserfs_proc_unregister_global(const char *name)
	598	{;
	599	}
1da177e4	600
bd4c625c LT	601	int reiserfs_proc_info_global_init(void)
	602	{
	603	return 0;
	604	}
	605	int reiserfs_proc_info_global_done(void)
	606	{
	607	return 0;
	608	}
1da177e4	609
bd4c625c LT	610	int reiserfs_global_version_in_proc(char buffer, char *start,
	611	off_t offset,
	612	int count, int eof, void data)
	613	{
	614	return 0;
	615	}
1da177e4 LT	616
	617	/* REISERFS_PROC_INFO */
	618	#endif
	619
	620	/*
1da177e4 LT	621	* Revision 1.1.8.2 2001/07/15 17:08:42 god
	622	* . use get_super() in procfs.c
	623	* . remove remove_save_link() from reiserfs_do_truncate()
	624	*
	625	* I accept terms and conditions stated in the Legal Agreement
	626	* (available at http://www.namesys.com/legalese.html)
	627	*
	628	* Revision 1.1.8.1 2001/07/11 16:48:50 god
	629	* proc info support
	630	*
	631	* I accept terms and conditions stated in the Legal Agreement
	632	* (available at http://www.namesys.com/legalese.html)
	633	*
	634	*/
	635
0222e657	636	/*
1da177e4 LT	637	* Make Linus happy.
	638	* Local variables:
	639	* c-indentation-style: "K&R"
	640	* mode-name: "LC"
	641	* c-basic-offset: 8
	642	* tab-width: 8
	643	* End:
	644	*/