lustre/include/linux/lustre_lite.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * lustre lite cluster file system
   5  *
   6  * This code is issued under the GNU General Public License.
   7  * See the file COPYING in this distribution
   8  *
   9  * Copyright (C) 2002 Cluster File Systems, Inc. <info@clusterfs.com>
  10  */
  11
  12
  13
  14 #ifndef _LL_H
  15 #define _LL_H
  16
  17 #include <linux/fs.h>
  18 #include <linux/ext2_fs.h>
  19
  20 #include <linux/obd_class.h>
  21 #include <linux/lustre_net.h>
  22 #include <linux/lustre_mds.h>
  23 #include <linux/lustre_ha.h>
  24
  25 extern kmem_cache_t *ll_file_data_slab;
  26 struct ll_file_data {
  27         __u64 fd_mdshandle;
  28         struct ptlrpc_request *fd_req;
  29         __u32 fd_flags;
  30 };
  31
  32
  33 struct ll_inode_md {
  34         struct mds_body *body;
  35         struct lov_stripe_md *md;
  36 };
  37
  38 #define LL_IOC_GETFLAGS                 _IOR ('f', 151, long)
  39 #define LL_IOC_SETFLAGS                 _IOW ('f', 152, long)
  40 #define LL_IOC_CLRFLAGS                 _IOW ('f', 153, long)
  41
  42 #define LL_FILE_IGNORE_LOCK             0x00000001
  43
  44 #define LL_INLINESZ      60
  45 struct ll_inode_info {
  46         struct lov_stripe_md *lli_smd;
  47         char                 *lli_symlink_name;
  48         struct lustre_handle  lli_intent_lock_handle;
  49         struct semaphore      lli_open_sem;
  50         struct list_head      lli_osc_locks;
  51 };
  52
  53 #define LL_SUPER_MAGIC 0x0BD00BD0
  54
  55 #define LL_COMMITCBD_STOPPING  0x1
  56 #define LL_COMMITCBD_STOPPED   0x2
  57 #define LL_COMMITCBD_RUNNING   0x4
  58
  59 struct ll_sb_info {
  60         unsigned char             ll_sb_uuid[37];
  61         struct lustre_handle      ll_mdc_conn;
  62         struct lustre_handle      ll_osc_conn;
  63         obd_id                    ll_rootino; /* number of root inode */
  64
  65         wait_queue_head_t         ll_commitcbd_waitq;
  66         wait_queue_head_t         ll_commitcbd_ctl_waitq;
  67         int                       ll_commitcbd_flags;
  68         struct task_struct       *ll_commitcbd_thread;
  69         time_t                    ll_commitcbd_waketime;
  70         time_t                    ll_commitcbd_timeout;
  71         spinlock_t                ll_commitcbd_lock;
  72 };
  73
  74
  75 static inline struct ll_sb_info *ll_s2sbi(struct super_block *sb)
  76 {
  77         return (struct ll_sb_info *)(sb->u.generic_sbp);
  78 }
  79
  80 static inline struct lustre_handle *ll_s2obdconn(struct super_block *sb)
  81 {
  82         return &(ll_s2sbi(sb))->ll_osc_conn;
  83 }
  84
  85 static inline struct client_obd *sbi2mdc(struct ll_sb_info *sbi)
  86 {
  87         struct obd_device *obd = class_conn2obd(&sbi->ll_mdc_conn);
  88         if (obd == NULL)
  89                 LBUG();
  90         return &obd->u.cli;
  91 }
  92
  93 static inline struct ll_sb_info *ll_i2sbi(struct inode *inode)
  94 {
  95         return ll_s2sbi(inode->i_sb);
  96 }
  97
  98 static inline struct ll_inode_info *ll_i2info(struct inode *inode)
  99 {
 100         return (struct ll_inode_info *)&(inode->u.generic_ip);
 101 }
 102
 103 static inline struct lustre_handle *ll_i2obdconn(struct inode *inode)
 104 {
 105         return ll_s2obdconn(inode->i_sb);
 106 }
 107
 108 static inline void ll_ino2fid(struct ll_fid *fid, obd_id ino, __u32 generation,
 109                               int type)
 110 {
 111         fid->id = ino;
 112         fid->generation = generation;
 113         fid->f_type = type;
 114 }
 115
 116 static inline void ll_inode2fid(struct ll_fid *fid, struct inode *inode)
 117 {
 118         ll_ino2fid(fid, inode->i_ino, inode->i_generation,
 119                    inode->i_mode & S_IFMT);
 120 }
 121
 122 /* namei.c */
 123 int ll_lock(struct inode *dir, struct dentry *dentry,
 124             struct lookup_intent *it, struct lustre_handle *lockh);
 125 int ll_unlock(__u32 mode, struct lustre_handle *lockh);
 126
 127 /* dcache.c */
 128 void ll_intent_release(struct dentry *de);
 129
 130 /* dir.c */
 131 extern struct file_operations ll_dir_operations;
 132 extern struct inode_operations ll_dir_inode_operations;
 133
 134 /* file.c */
 135 extern struct file_operations ll_file_operations;
 136 extern struct inode_operations ll_file_inode_operations;
 137 struct ldlm_lock;
 138 int ll_lock_callback(struct ldlm_lock *, struct ldlm_lock_desc *, void *data,
 139                      __u32 data_len);
 140
 141 /* rw.c */
 142 struct page *ll_getpage(struct inode *inode, unsigned long offset,
 143                            int create, int locked);
 144 void ll_truncate(struct inode *inode);
 145
 146 /* symlink.c */
 147 extern struct inode_operations ll_fast_symlink_inode_operations;
 148 extern struct inode_operations ll_symlink_inode_operations;
 149
 150 /* sysctl.c */
 151 void ll_sysctl_init(void);
 152 void ll_sysctl_clean(void);
 153
 154 #endif