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-rw-r--r--fs/reiserfs/procfs.c490
1 files changed, 490 insertions, 0 deletions
diff --git a/fs/reiserfs/procfs.c b/fs/reiserfs/procfs.c
new file mode 100644
index 0000000000..3dba8acf4e
--- /dev/null
+++ b/fs/reiserfs/procfs.c
@@ -0,0 +1,490 @@
+/* -*- 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 <linux/uaccess.h>
+#include "reiserfs.h"
+#include <linux/init.h>
+#include <linux/proc_fs.h>
+#include <linux/blkdev.h>
+
+/*
+ * LOCKING:
+ *
+ * These guys are evicted from procfs as the very first step in ->kill_sb().
+ *
+ */
+
+static int show_version(struct seq_file *m, void *unused)
+{
+ struct super_block *sb = m->private;
+ 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 DJP( x ) le32_to_cpu( jp -> x )
+#define JF( x ) ( r -> s_journal -> x )
+
+static int show_super(struct seq_file *m, void *unused)
+{
+ struct super_block *sb = m->private;
+ 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, void *unused)
+{
+ struct super_block *sb = m->private;
+ 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, void *unused)
+{
+ struct super_block *sb = m->private;
+ 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, void *unused)
+{
+ struct super_block *sb = m->private;
+ 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, void *unused)
+{
+ struct super_block *sb = m->private;
+ 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 = file_inode(sb_info->oidmap.mapf)->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 time64_t ktime_mono_to_real_seconds(time64_t mono)
+{
+ ktime_t kt = ktime_set(mono, NSEC_PER_SEC/2);
+
+ return ktime_divns(ktime_mono_to_real(kt), NSEC_PER_SEC);
+}
+
+static int show_journal(struct seq_file *m, void *unused)
+{
+ struct super_block *sb = m->private;
+ 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;
+
+ seq_printf(m, /* on-disk fields */
+ "jp_journal_1st_block: \t%i\n"
+ "jp_journal_dev: \t%pg[%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%lli\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),
+ SB_JOURNAL(sb)->j_dev_bd,
+ 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),
+ ktime_mono_to_real_seconds(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;
+}
+
+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 *, void *))
+{
+ proc_create_single_data(name, 0, REISERFS_SB(sb)->procdir, func, sb);
+}
+
+int reiserfs_proc_info_init(struct super_block *sb)
+{
+ char b[BDEVNAME_SIZE];
+ char *s;
+
+ /* Some block devices use /'s */
+ strscpy(b, sb->s_id, BDEVNAME_SIZE);
+ s = strchr(b, '/');
+ if (s)
+ *s = '!';
+
+ spin_lock_init(&__PINFO(sb).lock);
+ REISERFS_SB(sb)->procdir = proc_mkdir_data(b, 0, proc_info_root, sb);
+ if (REISERFS_SB(sb)->procdir) {
+ 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;
+ if (de) {
+ char b[BDEVNAME_SIZE];
+ char *s;
+
+ /* Some block devices use /'s */
+ strscpy(b, sb->s_id, BDEVNAME_SIZE);
+ s = strchr(b, '/');
+ if (s)
+ *s = '!';
+
+ remove_proc_subtree(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)
+ *
+ */
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