linux/include/linux/coda_psdev.h
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   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
  13struct kstatfs;
  14
  15/* communication pending/processing queues */
  16struct 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
  28static inline struct venus_comm *coda_vcp(struct super_block *sb)
  29{
  30        return (struct venus_comm *)((sb)->s_fs_info);
  31}
  32
  33/* upcalls */
  34int venus_rootfid(struct super_block *sb, struct CodaFid *fidp);
  35int venus_getattr(struct super_block *sb, struct CodaFid *fid,
  36                  struct coda_vattr *attr);
  37int venus_setattr(struct super_block *, struct CodaFid *, struct coda_vattr *);
  38int venus_lookup(struct super_block *sb, struct CodaFid *fid, 
  39                 const char *name, int length, int *type, 
  40                 struct CodaFid *resfid);
  41int venus_close(struct super_block *sb, struct CodaFid *fid, int flags,
  42                vuid_t uid);
  43int venus_open(struct super_block *sb, struct CodaFid *fid, int flags,
  44               struct file **f);
  45int venus_mkdir(struct super_block *sb, struct CodaFid *dirfid, 
  46                const char *name, int length, 
  47                struct CodaFid *newfid, struct coda_vattr *attrs);
  48int 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) ;
  51int venus_rmdir(struct super_block *sb, struct CodaFid *dirfid, 
  52                const char *name, int length);
  53int venus_remove(struct super_block *sb, struct CodaFid *dirfid, 
  54                 const char *name, int length);
  55int venus_readlink(struct super_block *sb, struct CodaFid *fid, 
  56                   char *buffer, int *length);
  57int 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);
  61int venus_link(struct super_block *sb, struct CodaFid *fid, 
  62                  struct CodaFid *dirfid, const char *name, int len );
  63int venus_symlink(struct super_block *sb, struct CodaFid *fid,
  64                  const char *name, int len, const char *symname, int symlen);
  65int venus_access(struct super_block *sb, struct CodaFid *fid, int mask);
  66int venus_pioctl(struct super_block *sb, struct CodaFid *fid,
  67                 unsigned int cmd, struct PioctlData *data);
  68int coda_downcall(struct venus_comm *vcp, int opcode, union outputArgs *out);
  69int venus_fsync(struct super_block *sb, struct CodaFid *fid);
  70int venus_statfs(struct dentry *dentry, struct kstatfs *sfs);
  71
  72/*
  73 * Statistics
  74 */
  75
  76extern struct venus_comm coda_comms[];
  77#endif /* __KERNEL__ */
  78
  79/* messages between coda filesystem in kernel and Venus */
  80struct 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
  97
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