fs/ocfs2/filecheck.h

   1 /* -*- mode: c; c-basic-offset: 8; -*-
   2  * vim: noexpandtab sw=8 ts=8 sts=0:
   3  *
   4  * filecheck.h
   5  *
   6  * Online file check.
   7  *
   8  * Copyright (C) 2016 SuSE.  All rights reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public
  12  * License as published by the Free Software Foundation, version 2.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  */
  19
  20
  21 #ifndef FILECHECK_H
  22 #define FILECHECK_H
  23
  24 #include <linux/types.h>
  25 #include <linux/list.h>
  26
  27
  28 /* File check errno */
  29 enum {
  30         OCFS2_FILECHECK_ERR_SUCCESS = 0,        /* Success */
  31         OCFS2_FILECHECK_ERR_FAILED = 1000,      /* Other failure */
  32         OCFS2_FILECHECK_ERR_INPROGRESS,         /* In progress */
  33         OCFS2_FILECHECK_ERR_READONLY,           /* Read only */
  34         OCFS2_FILECHECK_ERR_INJBD,              /* Buffer in jbd */
  35         OCFS2_FILECHECK_ERR_INVALIDINO,         /* Invalid ino */
  36         OCFS2_FILECHECK_ERR_BLOCKECC,           /* Block ecc */
  37         OCFS2_FILECHECK_ERR_BLOCKNO,            /* Block number */
  38         OCFS2_FILECHECK_ERR_VALIDFLAG,          /* Inode valid flag */
  39         OCFS2_FILECHECK_ERR_GENERATION,         /* Inode generation */
  40         OCFS2_FILECHECK_ERR_UNSUPPORTED         /* Unsupported */
  41 };
  42
  43 #define OCFS2_FILECHECK_ERR_START       OCFS2_FILECHECK_ERR_FAILED
  44 #define OCFS2_FILECHECK_ERR_END         OCFS2_FILECHECK_ERR_UNSUPPORTED
  45
  46 struct ocfs2_filecheck {
  47         struct list_head fc_head;       /* File check entry list head */
  48         spinlock_t fc_lock;
  49         unsigned int fc_max;    /* Maximum number of entry in list */
  50         unsigned int fc_size;   /* Current entry count in list */
  51         unsigned int fc_done;   /* Finished entry count in list */
  52 };
  53
  54 #define OCFS2_FILECHECK_MAXSIZE         100
  55 #define OCFS2_FILECHECK_MINSIZE         10
  56
  57 /* File check operation type */
  58 enum {
  59         OCFS2_FILECHECK_TYPE_CHK = 0,   /* Check a file(inode) */
  60         OCFS2_FILECHECK_TYPE_FIX,       /* Fix a file(inode) */
  61         OCFS2_FILECHECK_TYPE_SET = 100  /* Set entry list maximum size */
  62 };
  63
  64 struct ocfs2_filecheck_sysfs_entry {    /* sysfs entry per partition */
  65         struct kobject fs_kobj;
  66         struct completion fs_kobj_unregister;
  67         struct ocfs2_filecheck *fs_fcheck;
  68 };
  69
  70
  71 int ocfs2_filecheck_create_sysfs(struct ocfs2_super *osb);
  72 void ocfs2_filecheck_remove_sysfs(struct ocfs2_super *osb);
  73
  74 #endif  /* FILECHECK_H */