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-rw-r--r--fs/reiserfs/procfs.c664
1 files changed, 664 insertions, 0 deletions
diff --git a/fs/reiserfs/procfs.c b/fs/reiserfs/procfs.c
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+++ b/fs/reiserfs/procfs.c
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+/* -*- linux-c -*- */
+
+/* fs/reiserfs/procfs.c */
+
+/*
+ * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
+ */
+
+/* proc info support a la one created by Sizif@Botik.RU for PGC */
+
+/* $Id: procfs.c,v 1.1.8.2 2001/07/15 17:08:42 god Exp $ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/time.h>
+#include <linux/seq_file.h>
+#include <asm/uaccess.h>
+#include <linux/reiserfs_fs.h>
+#include <linux/reiserfs_fs_sb.h>
+#include <linux/smp_lock.h>
+#include <linux/init.h>
+#include <linux/proc_fs.h>
+
+#if defined( REISERFS_PROC_INFO )
+
+/*
+ * LOCKING:
+ *
+ * We rely on new Alexander Viro's super-block locking.
+ *
+ */
+
+static int show_version(struct seq_file *m, struct super_block *sb)
+{
+ char *format;
+
+ if ( REISERFS_SB(sb)->s_properties & (1 << REISERFS_3_6) ) {
+ format = "3.6";
+ } else if ( REISERFS_SB(sb)->s_properties & (1 << REISERFS_3_5) ) {
+ format = "3.5";
+ } else {
+ format = "unknown";
+ }
+
+ seq_printf(m, "%s format\twith checks %s\n",
+ format,
+#if defined( CONFIG_REISERFS_CHECK )
+ "on"
+#else
+ "off"
+#endif
+ );
+ return 0;
+}
+
+int reiserfs_global_version_in_proc( char *buffer, char **start, off_t offset,
+ int count, int *eof, void *data )
+{
+ *start = buffer;
+ *eof = 1;
+ return 0;
+}
+
+#define SF( x ) ( r -> x )
+#define SFP( x ) SF( s_proc_info_data.x )
+#define SFPL( x ) SFP( x[ level ] )
+#define SFPF( x ) SFP( scan_bitmap.x )
+#define SFPJ( x ) SFP( journal.x )
+
+#define D2C( x ) le16_to_cpu( x )
+#define D4C( x ) le32_to_cpu( x )
+#define DF( x ) D2C( rs -> s_v1.x )
+#define DFL( x ) D4C( rs -> s_v1.x )
+
+#define objectid_map( s, rs ) (old_format_only (s) ? \
+ (__u32 *)((struct reiserfs_super_block_v1 *)rs + 1) : \
+ (__u32 *)(rs + 1))
+#define MAP( i ) D4C( objectid_map( sb, rs )[ i ] )
+
+#define DJF( x ) le32_to_cpu( rs -> x )
+#define DJV( x ) le32_to_cpu( s_v1 -> x )
+#define DJP( x ) le32_to_cpu( jp -> x )
+#define JF( x ) ( r -> s_journal -> x )
+
+static int show_super(struct seq_file *m, struct super_block *sb)
+{
+ struct reiserfs_sb_info *r = REISERFS_SB(sb);
+
+ seq_printf(m, "state: \t%s\n"
+ "mount options: \t%s%s%s%s%s%s%s%s%s%s%s\n"
+ "gen. counter: \t%i\n"
+ "s_kmallocs: \t%i\n"
+ "s_disk_reads: \t%i\n"
+ "s_disk_writes: \t%i\n"
+ "s_fix_nodes: \t%i\n"
+ "s_do_balance: \t%i\n"
+ "s_unneeded_left_neighbor: \t%i\n"
+ "s_good_search_by_key_reada: \t%i\n"
+ "s_bmaps: \t%i\n"
+ "s_bmaps_without_search: \t%i\n"
+ "s_direct2indirect: \t%i\n"
+ "s_indirect2direct: \t%i\n"
+ "\n"
+ "max_hash_collisions: \t%i\n"
+
+ "breads: \t%lu\n"
+ "bread_misses: \t%lu\n"
+
+ "search_by_key: \t%lu\n"
+ "search_by_key_fs_changed: \t%lu\n"
+ "search_by_key_restarted: \t%lu\n"
+
+ "insert_item_restarted: \t%lu\n"
+ "paste_into_item_restarted: \t%lu\n"
+ "cut_from_item_restarted: \t%lu\n"
+ "delete_solid_item_restarted: \t%lu\n"
+ "delete_item_restarted: \t%lu\n"
+
+ "leaked_oid: \t%lu\n"
+ "leaves_removable: \t%lu\n",
+
+ SF( s_mount_state ) == REISERFS_VALID_FS ?
+ "REISERFS_VALID_FS" : "REISERFS_ERROR_FS",
+ reiserfs_r5_hash( sb ) ? "FORCE_R5 " : "",
+ reiserfs_rupasov_hash( sb ) ? "FORCE_RUPASOV " : "",
+ reiserfs_tea_hash( sb ) ? "FORCE_TEA " : "",
+ reiserfs_hash_detect( sb ) ? "DETECT_HASH " : "",
+ reiserfs_no_border( sb ) ? "NO_BORDER " : "BORDER ",
+ reiserfs_no_unhashed_relocation( sb ) ? "NO_UNHASHED_RELOCATION " : "",
+ reiserfs_hashed_relocation( sb ) ? "UNHASHED_RELOCATION " : "",
+ reiserfs_test4( sb ) ? "TEST4 " : "",
+ have_large_tails( sb ) ? "TAILS " : have_small_tails(sb)?"SMALL_TAILS ":"NO_TAILS ",
+ replay_only( sb ) ? "REPLAY_ONLY " : "",
+ convert_reiserfs( sb ) ? "CONV " : "",
+
+ atomic_read( &r -> s_generation_counter ),
+ SF( s_kmallocs ),
+ SF( s_disk_reads ),
+ SF( s_disk_writes ),
+ SF( s_fix_nodes ),
+ SF( s_do_balance ),
+ SF( s_unneeded_left_neighbor ),
+ SF( s_good_search_by_key_reada ),
+ SF( s_bmaps ),
+ SF( s_bmaps_without_search ),
+ SF( s_direct2indirect ),
+ SF( s_indirect2direct ),
+ SFP( max_hash_collisions ),
+ SFP( breads ),
+ SFP( bread_miss ),
+ SFP( search_by_key ),
+ SFP( search_by_key_fs_changed ),
+ SFP( search_by_key_restarted ),
+
+ SFP( insert_item_restarted ),
+ SFP( paste_into_item_restarted ),
+ SFP( cut_from_item_restarted ),
+ SFP( delete_solid_item_restarted ),
+ SFP( delete_item_restarted ),
+
+ SFP( leaked_oid ),
+ SFP( leaves_removable ) );
+
+ return 0;
+}
+
+static int show_per_level(struct seq_file *m, struct super_block *sb)
+{
+ struct reiserfs_sb_info *r = REISERFS_SB(sb);
+ int level;
+
+ seq_printf(m, "level\t"
+ " balances"
+ " [sbk: reads"
+ " fs_changed"
+ " restarted]"
+ " free space"
+ " items"
+ " can_remove"
+ " lnum"
+ " rnum"
+ " lbytes"
+ " rbytes"
+ " get_neig"
+ " get_neig_res"
+ " need_l_neig"
+ " need_r_neig"
+ "\n"
+
+ );
+
+ for( level = 0 ; level < MAX_HEIGHT ; ++ level ) {
+ seq_printf(m, "%i\t"
+ " %12lu"
+ " %12lu"
+ " %12lu"
+ " %12lu"
+ " %12lu"
+ " %12lu"
+ " %12lu"
+ " %12li"
+ " %12li"
+ " %12li"
+ " %12li"
+ " %12lu"
+ " %12lu"
+ " %12lu"
+ " %12lu"
+ "\n",
+ level,
+ SFPL( balance_at ),
+ SFPL( sbk_read_at ),
+ SFPL( sbk_fs_changed ),
+ SFPL( sbk_restarted ),
+ SFPL( free_at ),
+ SFPL( items_at ),
+ SFPL( can_node_be_removed ),
+ SFPL( lnum ),
+ SFPL( rnum ),
+ SFPL( lbytes ),
+ SFPL( rbytes ),
+ SFPL( get_neighbors ),
+ SFPL( get_neighbors_restart ),
+ SFPL( need_l_neighbor ),
+ SFPL( need_r_neighbor )
+ );
+ }
+ return 0;
+}
+
+static int show_bitmap(struct seq_file *m, struct super_block *sb)
+{
+ struct reiserfs_sb_info *r = REISERFS_SB(sb);
+
+ seq_printf(m, "free_block: %lu\n"
+ " scan_bitmap:"
+ " wait"
+ " bmap"
+ " retry"
+ " stolen"
+ " journal_hint"
+ "journal_nohint"
+ "\n"
+ " %14lu"
+ " %14lu"
+ " %14lu"
+ " %14lu"
+ " %14lu"
+ " %14lu"
+ " %14lu"
+ "\n",
+ SFP( free_block ),
+ SFPF( call ),
+ SFPF( wait ),
+ SFPF( bmap ),
+ SFPF( retry ),
+ SFPF( stolen ),
+ SFPF( in_journal_hint ),
+ SFPF( in_journal_nohint ) );
+
+ return 0;
+}
+
+static int show_on_disk_super(struct seq_file *m, struct super_block *sb)
+{
+ struct reiserfs_sb_info *sb_info = REISERFS_SB(sb);
+ struct reiserfs_super_block *rs = sb_info -> s_rs;
+ int hash_code = DFL( s_hash_function_code );
+ __u32 flags = DJF( s_flags );
+
+ seq_printf(m, "block_count: \t%i\n"
+ "free_blocks: \t%i\n"
+ "root_block: \t%i\n"
+ "blocksize: \t%i\n"
+ "oid_maxsize: \t%i\n"
+ "oid_cursize: \t%i\n"
+ "umount_state: \t%i\n"
+ "magic: \t%10.10s\n"
+ "fs_state: \t%i\n"
+ "hash: \t%s\n"
+ "tree_height: \t%i\n"
+ "bmap_nr: \t%i\n"
+ "version: \t%i\n"
+ "flags: \t%x[%s]\n"
+ "reserved_for_journal: \t%i\n",
+
+ DFL( s_block_count ),
+ DFL( s_free_blocks ),
+ DFL( s_root_block ),
+ DF( s_blocksize ),
+ DF( s_oid_maxsize ),
+ DF( s_oid_cursize ),
+ DF( s_umount_state ),
+ rs -> s_v1.s_magic,
+ DF( s_fs_state ),
+ hash_code == TEA_HASH ? "tea" :
+ ( hash_code == YURA_HASH ) ? "rupasov" :
+ ( hash_code == R5_HASH ) ? "r5" :
+ ( hash_code == UNSET_HASH ) ? "unset" : "unknown",
+ DF( s_tree_height ),
+ DF( s_bmap_nr ),
+ DF( s_version ),
+ flags,
+ ( flags & reiserfs_attrs_cleared )
+ ? "attrs_cleared" : "",
+ DF (s_reserved_for_journal));
+
+ return 0;
+}
+
+static int show_oidmap(struct seq_file *m, struct super_block *sb)
+{
+ struct reiserfs_sb_info *sb_info = REISERFS_SB(sb);
+ struct reiserfs_super_block *rs = sb_info -> s_rs;
+ unsigned int mapsize = le16_to_cpu( rs -> s_v1.s_oid_cursize );
+ unsigned long total_used = 0;
+ int i;
+
+ for( i = 0 ; i < mapsize ; ++i ) {
+ __u32 right;
+
+ right = ( i == mapsize - 1 ) ? MAX_KEY_OBJECTID : MAP( i + 1 );
+ seq_printf(m, "%s: [ %x .. %x )\n",
+ ( i & 1 ) ? "free" : "used", MAP( i ), right );
+ if( ! ( i & 1 ) ) {
+ total_used += right - MAP( i );
+ }
+ }
+#if defined( REISERFS_USE_OIDMAPF )
+ if( sb_info -> oidmap.use_file && ( sb_info -> oidmap.mapf != NULL ) ) {
+ loff_t size = sb_info->oidmap.mapf->f_dentry->d_inode->i_size;
+ total_used += size / sizeof( reiserfs_oidinterval_d_t );
+ }
+#endif
+ seq_printf(m, "total: \t%i [%i/%i] used: %lu [exact]\n",
+ mapsize,
+ mapsize, le16_to_cpu( rs -> s_v1.s_oid_maxsize ),
+ total_used);
+ return 0;
+}
+
+static int show_journal(struct seq_file *m, struct super_block *sb)
+{
+ struct reiserfs_sb_info *r = REISERFS_SB(sb);
+ struct reiserfs_super_block *rs = r -> s_rs;
+ struct journal_params *jp = &rs->s_v1.s_journal;
+ char b[BDEVNAME_SIZE];
+
+
+ seq_printf(m, /* on-disk fields */
+ "jp_journal_1st_block: \t%i\n"
+ "jp_journal_dev: \t%s[%x]\n"
+ "jp_journal_size: \t%i\n"
+ "jp_journal_trans_max: \t%i\n"
+ "jp_journal_magic: \t%i\n"
+ "jp_journal_max_batch: \t%i\n"
+ "jp_journal_max_commit_age: \t%i\n"
+ "jp_journal_max_trans_age: \t%i\n"
+ /* incore fields */
+ "j_1st_reserved_block: \t%i\n"
+ "j_state: \t%li\n"
+ "j_trans_id: \t%lu\n"
+ "j_mount_id: \t%lu\n"
+ "j_start: \t%lu\n"
+ "j_len: \t%lu\n"
+ "j_len_alloc: \t%lu\n"
+ "j_wcount: \t%i\n"
+ "j_bcount: \t%lu\n"
+ "j_first_unflushed_offset: \t%lu\n"
+ "j_last_flush_trans_id: \t%lu\n"
+ "j_trans_start_time: \t%li\n"
+ "j_list_bitmap_index: \t%i\n"
+ "j_must_wait: \t%i\n"
+ "j_next_full_flush: \t%i\n"
+ "j_next_async_flush: \t%i\n"
+ "j_cnode_used: \t%i\n"
+ "j_cnode_free: \t%i\n"
+ "\n"
+ /* reiserfs_proc_info_data_t.journal fields */
+ "in_journal: \t%12lu\n"
+ "in_journal_bitmap: \t%12lu\n"
+ "in_journal_reusable: \t%12lu\n"
+ "lock_journal: \t%12lu\n"
+ "lock_journal_wait: \t%12lu\n"
+ "journal_begin: \t%12lu\n"
+ "journal_relock_writers: \t%12lu\n"
+ "journal_relock_wcount: \t%12lu\n"
+ "mark_dirty: \t%12lu\n"
+ "mark_dirty_already: \t%12lu\n"
+ "mark_dirty_notjournal: \t%12lu\n"
+ "restore_prepared: \t%12lu\n"
+ "prepare: \t%12lu\n"
+ "prepare_retry: \t%12lu\n",
+
+ DJP( jp_journal_1st_block ),
+ bdevname(SB_JOURNAL(sb)->j_dev_bd, b),
+ DJP( jp_journal_dev ),
+ DJP( jp_journal_size ),
+ DJP( jp_journal_trans_max ),
+ DJP( jp_journal_magic ),
+ DJP( jp_journal_max_batch ),
+ SB_JOURNAL(sb)->j_max_commit_age,
+ DJP( jp_journal_max_trans_age ),
+
+ JF( j_1st_reserved_block ),
+ JF( j_state ),
+ JF( j_trans_id ),
+ JF( j_mount_id ),
+ JF( j_start ),
+ JF( j_len ),
+ JF( j_len_alloc ),
+ atomic_read( & r -> s_journal -> j_wcount ),
+ JF( j_bcount ),
+ JF( j_first_unflushed_offset ),
+ JF( j_last_flush_trans_id ),
+ JF( j_trans_start_time ),
+ JF( j_list_bitmap_index ),
+ JF( j_must_wait ),
+ JF( j_next_full_flush ),
+ JF( j_next_async_flush ),
+ JF( j_cnode_used ),
+ JF( j_cnode_free ),
+
+ SFPJ( in_journal ),
+ SFPJ( in_journal_bitmap ),
+ SFPJ( in_journal_reusable ),
+ SFPJ( lock_journal ),
+ SFPJ( lock_journal_wait ),
+ SFPJ( journal_being ),
+ SFPJ( journal_relock_writers ),
+ SFPJ( journal_relock_wcount ),
+ SFPJ( mark_dirty ),
+ SFPJ( mark_dirty_already ),
+ SFPJ( mark_dirty_notjournal ),
+ SFPJ( restore_prepared ),
+ SFPJ( prepare ),
+ SFPJ( prepare_retry )
+ );
+ return 0;
+}
+
+/* iterator */
+static int test_sb(struct super_block *sb, void *data)
+{
+ return data == sb;
+}
+
+static int set_sb(struct super_block *sb, void *data)
+{
+ return -ENOENT;
+}
+
+static void *r_start(struct seq_file *m, loff_t *pos)
+{
+ struct proc_dir_entry *de = m->private;
+ struct super_block *s = de->parent->data;
+ loff_t l = *pos;
+
+ if (l)
+ return NULL;
+
+ if (IS_ERR(sget(&reiserfs_fs_type, test_sb, set_sb, s)))
+ return NULL;
+
+ up_write(&s->s_umount);
+
+ if (de->deleted) {
+ deactivate_super(s);
+ return NULL;
+ }
+
+ return s;
+}
+
+static void *r_next(struct seq_file *m, void *v, loff_t *pos)
+{
+ ++*pos;
+ if (v)
+ deactivate_super(v);
+ return NULL;
+}
+
+static void r_stop(struct seq_file *m, void *v)
+{
+ if (v)
+ deactivate_super(v);
+}
+
+static int r_show(struct seq_file *m, void *v)
+{
+ struct proc_dir_entry *de = m->private;
+ int (*show)(struct seq_file *, struct super_block *) = de->data;
+ return show(m, v);
+}
+
+static struct seq_operations r_ops = {
+ .start = r_start,
+ .next = r_next,
+ .stop = r_stop,
+ .show = r_show,
+};
+
+static int r_open(struct inode *inode, struct file *file)
+{
+ int ret = seq_open(file, &r_ops);
+
+ if (!ret) {
+ struct seq_file *m = file->private_data;
+ m->private = PDE(inode);
+ }
+ return ret;
+}
+
+static struct file_operations r_file_operations = {
+ .open = r_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+static struct proc_dir_entry *proc_info_root = NULL;
+static const char proc_info_root_name[] = "fs/reiserfs";
+
+static void add_file(struct super_block *sb, char *name,
+ int (*func)(struct seq_file *, struct super_block *))
+{
+ struct proc_dir_entry *de;
+ de = create_proc_entry(name, 0, REISERFS_SB(sb)->procdir);
+ if (de) {
+ de->data = func;
+ de->proc_fops = &r_file_operations;
+ }
+}
+
+int reiserfs_proc_info_init( struct super_block *sb )
+{
+ spin_lock_init( & __PINFO( sb ).lock );
+ REISERFS_SB(sb)->procdir = proc_mkdir(reiserfs_bdevname (sb), proc_info_root);
+ if( REISERFS_SB(sb)->procdir ) {
+ REISERFS_SB(sb)->procdir->owner = THIS_MODULE;
+ REISERFS_SB(sb)->procdir->data = sb;
+ add_file(sb, "version", show_version);
+ add_file(sb, "super", show_super);
+ add_file(sb, "per-level", show_per_level);
+ add_file(sb, "bitmap", show_bitmap);
+ add_file(sb, "on-disk-super", show_on_disk_super);
+ add_file(sb, "oidmap", show_oidmap);
+ add_file(sb, "journal", show_journal);
+ return 0;
+ }
+ reiserfs_warning(sb, "reiserfs: cannot create /proc/%s/%s",
+ proc_info_root_name, reiserfs_bdevname (sb) );
+ return 1;
+}
+
+int reiserfs_proc_info_done( struct super_block *sb )
+{
+ struct proc_dir_entry *de = REISERFS_SB(sb)->procdir;
+ if (de) {
+ remove_proc_entry("journal", de);
+ remove_proc_entry("oidmap", de);
+ remove_proc_entry("on-disk-super", de);
+ remove_proc_entry("bitmap", de);
+ remove_proc_entry("per-level", de);
+ remove_proc_entry("super", de);
+ remove_proc_entry("version", de);
+ }
+ spin_lock( & __PINFO( sb ).lock );
+ __PINFO( sb ).exiting = 1;
+ spin_unlock( & __PINFO( sb ).lock );
+ if ( proc_info_root ) {
+ remove_proc_entry( reiserfs_bdevname (sb), proc_info_root );
+ REISERFS_SB(sb)->procdir = NULL;
+ }
+ return 0;
+}
+
+struct proc_dir_entry *reiserfs_proc_register_global( char *name,
+ read_proc_t *func )
+{
+ return ( proc_info_root ) ? create_proc_read_entry( name, 0,
+ proc_info_root,
+ func, NULL ) : NULL;
+}
+
+void reiserfs_proc_unregister_global( const char *name )
+{
+ remove_proc_entry( name, proc_info_root );
+}
+
+int reiserfs_proc_info_global_init( void )
+{
+ if( proc_info_root == NULL ) {
+ proc_info_root = proc_mkdir(proc_info_root_name, NULL);
+ if( proc_info_root ) {
+ proc_info_root -> owner = THIS_MODULE;
+ } else {
+ reiserfs_warning (NULL,
+ "reiserfs: cannot create /proc/%s",
+ proc_info_root_name );
+ return 1;
+ }
+ }
+ return 0;
+}
+
+int reiserfs_proc_info_global_done( void )
+{
+ if ( proc_info_root != NULL ) {
+ proc_info_root = NULL;
+ remove_proc_entry(proc_info_root_name, NULL);
+ }
+ return 0;
+}
+
+/* REISERFS_PROC_INFO */
+#else
+
+int reiserfs_proc_info_init( struct super_block *sb ) { return 0; }
+int reiserfs_proc_info_done( struct super_block *sb ) { return 0; }
+
+struct proc_dir_entry *reiserfs_proc_register_global( char *name,
+ read_proc_t *func )
+{ return NULL; }
+
+void reiserfs_proc_unregister_global( const char *name ) {;}
+
+int reiserfs_proc_info_global_init( void ) { return 0; }
+int reiserfs_proc_info_global_done( void ) { return 0; }
+
+int reiserfs_global_version_in_proc( char *buffer, char **start,
+ off_t offset,
+ int count, int *eof, void *data )
+{ return 0; }
+
+/* REISERFS_PROC_INFO */
+#endif
+
+/*
+ * $Log: procfs.c,v $
+ * Revision 1.1.8.2 2001/07/15 17:08:42 god
+ * . use get_super() in procfs.c
+ * . remove remove_save_link() from reiserfs_do_truncate()
+ *
+ * I accept terms and conditions stated in the Legal Agreement
+ * (available at http://www.namesys.com/legalese.html)
+ *
+ * Revision 1.1.8.1 2001/07/11 16:48:50 god
+ * proc info support
+ *
+ * I accept terms and conditions stated in the Legal Agreement
+ * (available at http://www.namesys.com/legalese.html)
+ *
+ */
+
+/*
+ * Make Linus happy.
+ * Local variables:
+ * c-indentation-style: "K&R"
+ * mode-name: "LC"
+ * c-basic-offset: 8
+ * tab-width: 8
+ * End:
+ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 10:12:55 +0000