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 #include <linux/mutex.h>
  12
  13 struct kstatfs;
  14
  15 /* communication pending/processing queues */
  16 struct venus_comm {
  17         u_long              vc_seq;
  18         wait_queue_head_t   vc_waitq; /* Venus wait queue */
  19         struct list_head    vc_pending;
  20         struct list_head    vc_processing;
  21         int                 vc_inuse;
  22         struct super_block *vc_sb;
  23         struct backing_dev_info bdi;
  24         struct mutex        vc_mutex;
  25 };
  26
  27
  28 static inline struct venus_comm *coda_vcp(struct super_block *sb)
  29 {
  30         return (struct venus_comm *)((sb)->s_fs_info);
  31 }
  32
  33 /* upcalls */
  34 int venus_rootfid(struct super_block *sb, struct CodaFid *fidp);
  35 int venus_getattr(struct super_block *sb, struct CodaFid *fid,
  36                   struct coda_vattr *attr);
  37 int venus_setattr(struct super_block *, struct CodaFid *, struct coda_vattr *);
  38 int venus_lookup(struct super_block *sb, struct CodaFid *fid,
  39                  const char *name, int length, int *type,
  40                  struct CodaFid *resfid);
  41 int venus_close(struct super_block *sb, struct CodaFid *fid, int flags,
  42                 vuid_t uid);
  43 int venus_open(struct super_block *sb, struct CodaFid *fid, int flags,
  44                struct file **f);
  45 int venus_mkdir(struct super_block *sb, struct CodaFid *dirfid,
  46                 const char *name, int length,
  47                 struct CodaFid *newfid, struct coda_vattr *attrs);
  48 int venus_create(struct super_block *sb, struct CodaFid *dirfid,
  49                  const char *name, int length, int excl, int mode,
  50                  struct CodaFid *newfid, struct coda_vattr *attrs) ;
  51 int venus_rmdir(struct super_block *sb, struct CodaFid *dirfid,
  52                 const char *name, int length);
  53 int venus_remove(struct super_block *sb, struct CodaFid *dirfid,
  54                  const char *name, int length);
  55 int venus_readlink(struct super_block *sb, struct CodaFid *fid,
  56                    char *buffer, int *length);
  57 int venus_rename(struct super_block *, struct CodaFid *new_fid,
  58                  struct CodaFid *old_fid, size_t old_length,
  59                  size_t new_length, const char *old_name,
  60                  const char *new_name);
  61 int venus_link(struct super_block *sb, struct CodaFid *fid,
  62                   struct CodaFid *dirfid, const char *name, int len );
  63 int venus_symlink(struct super_block *sb, struct CodaFid *fid,
  64                   const char *name, int len, const char *symname, int symlen);
  65 int venus_access(struct super_block *sb, struct CodaFid *fid, int mask);
  66 int venus_pioctl(struct super_block *sb, struct CodaFid *fid,
  67                  unsigned int cmd, struct PioctlData *data);
  68 int coda_downcall(struct venus_comm *vcp, int opcode, union outputArgs *out);
  69 int venus_fsync(struct super_block *sb, struct CodaFid *fid);
  70 int venus_statfs(struct dentry *dentry, struct kstatfs *sfs);
  71
  72 /*
  73  * Statistics
  74  */
  75
  76 extern struct venus_comm coda_comms[];
  77 #endif /* __KERNEL__ */
  78
  79 /* messages between coda filesystem in kernel and Venus */
  80 struct upc_req {
  81         struct list_head    uc_chain;
  82         caddr_t             uc_data;
  83         u_short             uc_flags;
  84         u_short             uc_inSize;  /* Size is at most 5000 bytes */
  85         u_short             uc_outSize;
  86         u_short             uc_opcode;  /* copied from data to save lookup */
  87         int                 uc_unique;
  88         wait_queue_head_t   uc_sleep;   /* process' wait queue */
  89 };
  90
  91 #define CODA_REQ_ASYNC  0x1
  92 #define CODA_REQ_READ   0x2
  93 #define CODA_REQ_WRITE  0x4
  94 #define CODA_REQ_ABORT  0x8
  95
  96 #endif