include/linux/coda_psdev.h

   1 #ifndef __CODA_PSDEV_H
   2 #define __CODA_PSDEV_H
   3
   4 #define CODA_PSDEV_MAJOR 67
   5 #define MAX_CODADEVS  5    /* how many do we allow */
   6
   7 #define CODA_SUPER_MAGIC        0x73757245
   8
   9 struct coda_sb_info
  10 {
  11         struct venus_comm * sbi_vcomm;
  12         struct super_block *sbi_sb;
  13         struct list_head    sbi_cihead;
  14 };
  15
  16 /* communication pending/processing queues */
  17 struct venus_comm {
  18         u_long              vc_seq;
  19         wait_queue_head_t   vc_waitq; /* Venus wait queue */
  20         struct list_head    vc_pending;
  21         struct list_head    vc_processing;
  22         int                 vc_inuse;
  23         struct super_block *vc_sb;
  24 };
  25
  26
  27 static inline struct coda_sb_info *coda_sbp(struct super_block *sb)
  28 {
  29     return ((struct coda_sb_info *)((sb)->u.generic_sbp));
  30 }
  31
  32
  33 /* upcalls */
  34 int venus_rootfid(struct super_block *sb, ViceFid *fidp);
  35 int venus_getattr(struct super_block *sb, struct ViceFid *fid,
  36                      struct coda_vattr *attr);
  37 int venus_setattr(struct super_block *, struct ViceFid *,
  38                      struct coda_vattr *);
  39 int venus_lookup(struct super_block *sb, struct ViceFid *fid,
  40                     const char *name, int length, int *type,
  41                     struct ViceFid *resfid);
  42 int venus_release(struct super_block *sb, struct ViceFid *fid, int flags,
  43                   struct coda_cred *);
  44 int venus_open(struct super_block *sb, struct ViceFid *fid,
  45                   int flags, ino_t *ino, dev_t *dev);
  46 int venus_mkdir(struct super_block *sb, struct ViceFid *dirfid,
  47                           const char *name, int length,
  48                           struct ViceFid *newfid, struct coda_vattr *attrs);
  49 int venus_create(struct super_block *sb, struct ViceFid *dirfid,
  50                     const char *name, int length, int excl, int mode, int rdev,
  51                     struct ViceFid *newfid, struct coda_vattr *attrs) ;
  52 int venus_rmdir(struct super_block *sb, struct ViceFid *dirfid,
  53                     const char *name, int length);
  54 int venus_remove(struct super_block *sb, struct ViceFid *dirfid,
  55                  const char *name, int length);
  56 int venus_readlink(struct super_block *sb, struct ViceFid *fid,
  57                    char *buffer, int *length);
  58 int venus_rename(struct super_block *, struct ViceFid *new_fid,
  59                  struct ViceFid *old_fid, size_t old_length,
  60                  size_t new_length, const char *old_name,
  61                  const char *new_name);
  62 int venus_link(struct super_block *sb, struct ViceFid *fid,
  63                   struct ViceFid *dirfid, const char *name, int len );
  64 int venus_symlink(struct super_block *sb, struct ViceFid *fid,
  65                   const char *name, int len, const char *symname, int symlen);
  66 int venus_access(struct super_block *sb, struct ViceFid *fid, int mask);
  67 int venus_pioctl(struct super_block *sb, struct ViceFid *fid,
  68                  unsigned int cmd, struct PioctlData *data);
  69 int coda_downcall(int opcode, union outputArgs *out, struct super_block *sb);
  70 int venus_fsync(struct super_block *sb, struct ViceFid *fid);
  71 int venus_statfs(struct super_block *sb, struct statfs *sfs);
  72
  73
  74 /* messages between coda filesystem in kernel and Venus */
  75 extern int coda_hard;
  76 extern unsigned long coda_timeout;
  77 struct upc_req {
  78         struct list_head    uc_chain;
  79         caddr_t             uc_data;
  80         u_short             uc_flags;
  81         u_short             uc_inSize;  /* Size is at most 5000 bytes */
  82         u_short             uc_outSize;
  83         u_short             uc_opcode;  /* copied from data to save lookup */
  84         int                 uc_unique;
  85         wait_queue_head_t   uc_sleep;   /* process' wait queue */
  86         unsigned long       uc_posttime;
  87 };
  88
  89 #define REQ_ASYNC  0x1
  90 #define REQ_READ   0x2
  91 #define REQ_WRITE  0x4
  92 #define REQ_ABORT  0x8
  93
  94
  95 /*
  96  * Statistics
  97  */
  98 struct coda_upcallstats {
  99         int     ncalls;                 /* client requests */
 100         int     nbadcalls;              /* upcall failures */
 101         int     reqs[CODA_NCALLS];      /* count of each request */
 102 } ;
 103
 104 extern struct coda_upcallstats coda_callstats;
 105 extern struct venus_comm coda_comms[];
 106
 107 static inline void clstats(int opcode)
 108 {
 109     coda_callstats.ncalls++;
 110     if ( (0 <= opcode) && (opcode <= CODA_NCALLS) )
 111         coda_callstats.reqs[opcode]++;
 112     else
 113         printk("clstats called with bad opcode %d\n", opcode);
 114 }
 115
 116 static inline void badclstats(void)
 117 {
 118     coda_callstats.nbadcalls++;
 119 }
 120
 121 #endif