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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 $ */ |
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#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; |
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if (REISERFS_SB(sb)->s_properties & (1 << REISERFS_3_6)) { |
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format = "3.6"; |
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} else if (REISERFS_SB(sb)->s_properties & (1 << REISERFS_3_5)) { |
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format = "3.5"; } else { format = "unknown"; } |
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seq_printf(m, "%s format\twith checks %s ", format, |
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#if defined( CONFIG_REISERFS_CHECK ) |
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"on" |
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#else |
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"off" |
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#endif |
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); |
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return 0; } |
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int reiserfs_global_version_in_proc(char *buffer, char **start, off_t offset, int count, int *eof, void *data) |
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{ *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) ? \ |
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(__le32 *)((struct reiserfs_super_block_v1 *)rs + 1) : \ (__le32 *)(rs + 1)) |
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#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 ) |
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#define DJP( x ) le32_to_cpu( jp -> x ) |
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#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); |
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seq_printf(m, "state: \t%s " "mount options: \t%s%s%s%s%s%s%s%s%s%s%s " "gen. counter: \t%i " |
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"s_disk_reads: \t%i " "s_disk_writes: \t%i " "s_fix_nodes: \t%i " "s_do_balance: \t%i " "s_unneeded_left_neighbor: \t%i " "s_good_search_by_key_reada: \t%i " "s_bmaps: \t%i " "s_bmaps_without_search: \t%i " "s_direct2indirect: \t%i " "s_indirect2direct: \t%i " " " "max_hash_collisions: \t%i " "breads: \t%lu " "bread_misses: \t%lu " "search_by_key: \t%lu " "search_by_key_fs_changed: \t%lu " "search_by_key_restarted: \t%lu " "insert_item_restarted: \t%lu " "paste_into_item_restarted: \t%lu " "cut_from_item_restarted: \t%lu " "delete_solid_item_restarted: \t%lu " "delete_item_restarted: \t%lu " "leaked_oid: \t%lu " "leaves_removable: \t%lu ", 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 " : "", |
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atomic_read(&r->s_generation_counter), |
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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)); |
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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; |
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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" " "); 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" " ", 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) ); |
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} return 0; } static int show_bitmap(struct seq_file *m, struct super_block *sb) { struct reiserfs_sb_info *r = REISERFS_SB(sb); |
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seq_printf(m, "free_block: %lu " " scan_bitmap:" " wait" " bmap" " retry" " stolen" " journal_hint" "journal_nohint" " " " %14lu" " %14lu" " %14lu" " %14lu" " %14lu" " %14lu" " %14lu" " ", SFP(free_block), SFPF(call), SFPF(wait), SFPF(bmap), SFPF(retry), SFPF(stolen), SFPF(in_journal_hint), SFPF(in_journal_nohint)); |
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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); |
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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 " "free_blocks: \t%i " "root_block: \t%i " "blocksize: \t%i " "oid_maxsize: \t%i " "oid_cursize: \t%i " "umount_state: \t%i " "magic: \t%10.10s " "fs_state: \t%i " "hash: \t%s " "tree_height: \t%i " "bmap_nr: \t%i " "version: \t%i " "flags: \t%x[%s] " "reserved_for_journal: \t%i ", 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)); |
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return 0; } static int show_oidmap(struct seq_file *m, struct super_block *sb) { struct reiserfs_sb_info *sb_info = REISERFS_SB(sb); |
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struct reiserfs_super_block *rs = sb_info->s_rs; unsigned int mapsize = le16_to_cpu(rs->s_v1.s_oid_cursize); |
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unsigned long total_used = 0; int i; |
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for (i = 0; i < mapsize; ++i) { |
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__u32 right; |
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right = (i == mapsize - 1) ? MAX_KEY_OBJECTID : MAP(i + 1); |
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seq_printf(m, "%s: [ %x .. %x ) ", |
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(i & 1) ? "free" : "used", MAP(i), right); if (!(i & 1)) { total_used += right - MAP(i); |
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} } #if defined( REISERFS_USE_OIDMAPF ) |
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if (sb_info->oidmap.use_file && (sb_info->oidmap.mapf != NULL)) { |
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loff_t size = sb_info->oidmap.mapf->f_dentry->d_inode->i_size; |
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total_used += size / sizeof(reiserfs_oidinterval_d_t); |
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} #endif |
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seq_printf(m, "total: \t%i [%i/%i] used: %lu [exact] ", mapsize, mapsize, le16_to_cpu(rs->s_v1.s_oid_maxsize), total_used); |
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return 0; } static int show_journal(struct seq_file *m, struct super_block *sb) { struct reiserfs_sb_info *r = REISERFS_SB(sb); |
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struct reiserfs_super_block *rs = r->s_rs; |
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struct journal_params *jp = &rs->s_v1.s_journal; char b[BDEVNAME_SIZE]; |
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seq_printf(m, /* on-disk fields */ "jp_journal_1st_block: \t%i " "jp_journal_dev: \t%s[%x] " "jp_journal_size: \t%i " "jp_journal_trans_max: \t%i " "jp_journal_magic: \t%i " "jp_journal_max_batch: \t%i " "jp_journal_max_commit_age: \t%i " "jp_journal_max_trans_age: \t%i " /* incore fields */ "j_1st_reserved_block: \t%i " "j_state: \t%li " "j_trans_id: \t%lu " "j_mount_id: \t%lu " "j_start: \t%lu " "j_len: \t%lu " "j_len_alloc: \t%lu " "j_wcount: \t%i " "j_bcount: \t%lu " "j_first_unflushed_offset: \t%lu " "j_last_flush_trans_id: \t%lu " "j_trans_start_time: \t%li " "j_list_bitmap_index: \t%i " "j_must_wait: \t%i " "j_next_full_flush: \t%i " "j_next_async_flush: \t%i " "j_cnode_used: \t%i " "j_cnode_free: \t%i " " " /* reiserfs_proc_info_data_t.journal fields */ "in_journal: \t%12lu " "in_journal_bitmap: \t%12lu " "in_journal_reusable: \t%12lu " "lock_journal: \t%12lu " "lock_journal_wait: \t%12lu " "journal_begin: \t%12lu " "journal_relock_writers: \t%12lu " "journal_relock_wcount: \t%12lu " "mark_dirty: \t%12lu " "mark_dirty_already: \t%12lu " "mark_dirty_notjournal: \t%12lu " "restore_prepared: \t%12lu " "prepare: \t%12lu " "prepare_retry: \t%12lu ", 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) ); |
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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; } |
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static void *r_start(struct seq_file *m, loff_t * pos) |
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{ 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; } |
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static void *r_next(struct seq_file *m, void *v, loff_t * pos) |
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{ ++*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; |
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int (*show) (struct seq_file *, struct super_block *) = de->data; |
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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; } |
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static const struct file_operations r_file_operations = { |
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.open = r_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release, |
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}; 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, |
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int (*func) (struct seq_file *, struct super_block *)) |
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{ 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; } } |
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int reiserfs_proc_info_init(struct super_block *sb) |
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{ |
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char b[BDEVNAME_SIZE]; char *s; /* Some block devices use /'s */ strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE); s = strchr(b, '/'); if (s) *s = '!'; |
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spin_lock_init(&__PINFO(sb).lock); |
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REISERFS_SB(sb)->procdir = proc_mkdir(b, proc_info_root); |
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if (REISERFS_SB(sb)->procdir) { |
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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", |
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proc_info_root_name, b); |
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return 1; } |
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int reiserfs_proc_info_done(struct super_block *sb) |
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{ struct proc_dir_entry *de = REISERFS_SB(sb)->procdir; |
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char b[BDEVNAME_SIZE]; char *s; /* Some block devices use /'s */ strlcpy(b, reiserfs_bdevname(sb), BDEVNAME_SIZE); s = strchr(b, '/'); if (s) *s = '!'; |
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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); } |
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spin_lock(&__PINFO(sb).lock); __PINFO(sb).exiting = 1; spin_unlock(&__PINFO(sb).lock); if (proc_info_root) { |
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remove_proc_entry(b, proc_info_root); |
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REISERFS_SB(sb)->procdir = NULL; } return 0; } |
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struct proc_dir_entry *reiserfs_proc_register_global(char *name, read_proc_t * func) |
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{ |
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return (proc_info_root) ? create_proc_read_entry(name, 0, proc_info_root, func, NULL) : NULL; |
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} |
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void reiserfs_proc_unregister_global(const char *name) |
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{ |
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remove_proc_entry(name, proc_info_root); |
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} |
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int reiserfs_proc_info_global_init(void) |
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{ |
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if (proc_info_root == NULL) { |
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proc_info_root = proc_mkdir(proc_info_root_name, NULL); |
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if (proc_info_root) { proc_info_root->owner = THIS_MODULE; |
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} else { |
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reiserfs_warning(NULL, "reiserfs: cannot create /proc/%s", proc_info_root_name); |
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return 1; } } return 0; } |
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int reiserfs_proc_info_global_done(void) |
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{ |
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if (proc_info_root != NULL) { |
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proc_info_root = NULL; remove_proc_entry(proc_info_root_name, NULL); } return 0; } /* REISERFS_PROC_INFO */ #else |
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int reiserfs_proc_info_init(struct super_block *sb) { return 0; } int reiserfs_proc_info_done(struct super_block *sb) { return 0; } |
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struct proc_dir_entry *reiserfs_proc_register_global(char *name, read_proc_t * func) { return NULL; } |
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void reiserfs_proc_unregister_global(const char *name) {; } |
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686 687 688 689 690 691 692 693 |
int reiserfs_proc_info_global_init(void) { return 0; } int reiserfs_proc_info_global_done(void) { return 0; } |
1da177e4c
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694 |
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bd4c625c0
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695 696 697 698 699 700 |
int reiserfs_global_version_in_proc(char *buffer, char **start, off_t offset, int count, int *eof, void *data) { return 0; } |
1da177e4c
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701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 |
/* 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: */ |