include/linux/coda_psdev.h

   1 #ifndef __CODA_PSDEV_H
   2 #define __CODA_PSDEV_H
   3
   4 #include <linux/magic.h>
   5
   6 #define CODA_PSDEV_MAJOR 67
   7 #define MAX_CODADEVS  5    /* how many do we allow */
   8
   9 #ifdef __KERNEL__
  10 #include <linux/backing-dev.h>
  11
  12 struct kstatfs;
  13
  14 /* communication pending/processing queues */
  15 struct venus_comm {
  16         u_long              vc_seq;
  17         wait_queue_head_t   vc_waitq; /* Venus wait queue */
  18         struct list_head    vc_pending;
  19         struct list_head    vc_processing;
  20         int                 vc_inuse;
  21         struct super_block *vc_sb;
  22         struct backing_dev_info bdi;
  23 };
  24
  25
  26 static inline struct venus_comm *coda_vcp(struct super_block *sb)
  27 {
  28         return (struct venus_comm *)((sb)->s_fs_info);
  29 }
  30
  31 /* upcalls */
  32 int venus_rootfid(struct super_block *sb, struct CodaFid *fidp);
  33 int venus_getattr(struct super_block *sb, struct CodaFid *fid,
  34                   struct coda_vattr *attr);
  35 int venus_setattr(struct super_block *, struct CodaFid *, struct coda_vattr *);
  36 int venus_lookup(struct super_block *sb, struct CodaFid *fid,
  37                  const char *name, int length, int *type,
  38                  struct CodaFid *resfid);
  39 int venus_close(struct super_block *sb, struct CodaFid *fid, int flags,
  40                 vuid_t uid);
  41 int venus_open(struct super_block *sb, struct CodaFid *fid, int flags,
  42                struct file **f);
  43 int venus_mkdir(struct super_block *sb, struct CodaFid *dirfid,
  44                 const char *name, int length,
  45                 struct CodaFid *newfid, struct coda_vattr *attrs);
  46 int venus_create(struct super_block *sb, struct CodaFid *dirfid,
  47                  const char *name, int length, int excl, int mode,
  48                  struct CodaFid *newfid, struct coda_vattr *attrs) ;
  49 int venus_rmdir(struct super_block *sb, struct CodaFid *dirfid,
  50                 const char *name, int length);
  51 int venus_remove(struct super_block *sb, struct CodaFid *dirfid,
  52                  const char *name, int length);
  53 int venus_readlink(struct super_block *sb, struct CodaFid *fid,
  54                    char *buffer, int *length);
  55 int venus_rename(struct super_block *, struct CodaFid *new_fid,
  56                  struct CodaFid *old_fid, size_t old_length,
  57                  size_t new_length, const char *old_name,
  58                  const char *new_name);
  59 int venus_link(struct super_block *sb, struct CodaFid *fid,
  60                   struct CodaFid *dirfid, const char *name, int len );
  61 int venus_symlink(struct super_block *sb, struct CodaFid *fid,
  62                   const char *name, int len, const char *symname, int symlen);
  63 int venus_access(struct super_block *sb, struct CodaFid *fid, int mask);
  64 int venus_pioctl(struct super_block *sb, struct CodaFid *fid,
  65                  unsigned int cmd, struct PioctlData *data);
  66 int coda_downcall(int opcode, union outputArgs *out, struct super_block *sb);
  67 int venus_fsync(struct super_block *sb, struct CodaFid *fid);
  68 int venus_statfs(struct dentry *dentry, struct kstatfs *sfs);
  69
  70 /*
  71  * Statistics
  72  */
  73
  74 extern struct venus_comm coda_comms[];
  75 #endif /* __KERNEL__ */
  76
  77 /* messages between coda filesystem in kernel and Venus */
  78 struct upc_req {
  79         struct list_head    uc_chain;
  80         caddr_t             uc_data;
  81         u_short             uc_flags;
  82         u_short             uc_inSize;  /* Size is at most 5000 bytes */
  83         u_short             uc_outSize;
  84         u_short             uc_opcode;  /* copied from data to save lookup */
  85         int                 uc_unique;
  86         wait_queue_head_t   uc_sleep;   /* process' wait queue */
  87 };
  88
  89 #define REQ_ASYNC  0x1
  90 #define REQ_READ   0x2
  91 #define REQ_WRITE  0x4
  92 #define REQ_ABORT  0x8
  93
  94 #endif