include/linux/coda_psdev.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __CODA_PSDEV_H
   3 #define __CODA_PSDEV_H
   4
   5 #include <linux/backing-dev.h>
   6 #include <linux/mutex.h>
   7 #include <uapi/linux/coda_psdev.h>
   8
   9 struct kstatfs;
  10
  11 /* communication pending/processing queues */
  12 struct venus_comm {
  13         u_long              vc_seq;
  14         wait_queue_head_t   vc_waitq; /* Venus wait queue */
  15         struct list_head    vc_pending;
  16         struct list_head    vc_processing;
  17         int                 vc_inuse;
  18         struct super_block *vc_sb;
  19         struct mutex        vc_mutex;
  20 };
  21
  22 /* messages between coda filesystem in kernel and Venus */
  23 struct upc_req {
  24         struct list_head        uc_chain;
  25         caddr_t                 uc_data;
  26         u_short                 uc_flags;
  27         u_short                 uc_inSize;  /* Size is at most 5000 bytes */
  28         u_short                 uc_outSize;
  29         u_short                 uc_opcode;  /* copied from data to save lookup */
  30         int                     uc_unique;
  31         wait_queue_head_t       uc_sleep;   /* process' wait queue */
  32 };
  33
  34 static inline struct venus_comm *coda_vcp(struct super_block *sb)
  35 {
  36         return (struct venus_comm *)((sb)->s_fs_info);
  37 }
  38
  39 /* upcalls */
  40 int venus_rootfid(struct super_block *sb, struct CodaFid *fidp);
  41 int venus_getattr(struct super_block *sb, struct CodaFid *fid,
  42                   struct coda_vattr *attr);
  43 int venus_setattr(struct super_block *, struct CodaFid *, struct coda_vattr *);
  44 int venus_lookup(struct super_block *sb, struct CodaFid *fid,
  45                  const char *name, int length, int *type,
  46                  struct CodaFid *resfid);
  47 int venus_close(struct super_block *sb, struct CodaFid *fid, int flags,
  48                 kuid_t uid);
  49 int venus_open(struct super_block *sb, struct CodaFid *fid, int flags,
  50                struct file **f);
  51 int venus_mkdir(struct super_block *sb, struct CodaFid *dirfid,
  52                 const char *name, int length,
  53                 struct CodaFid *newfid, struct coda_vattr *attrs);
  54 int venus_create(struct super_block *sb, struct CodaFid *dirfid,
  55                  const char *name, int length, int excl, int mode,
  56                  struct CodaFid *newfid, struct coda_vattr *attrs) ;
  57 int venus_rmdir(struct super_block *sb, struct CodaFid *dirfid,
  58                 const char *name, int length);
  59 int venus_remove(struct super_block *sb, struct CodaFid *dirfid,
  60                  const char *name, int length);
  61 int venus_readlink(struct super_block *sb, struct CodaFid *fid,
  62                    char *buffer, int *length);
  63 int venus_rename(struct super_block *, struct CodaFid *new_fid,
  64                  struct CodaFid *old_fid, size_t old_length,
  65                  size_t new_length, const char *old_name,
  66                  const char *new_name);
  67 int venus_link(struct super_block *sb, struct CodaFid *fid,
  68                   struct CodaFid *dirfid, const char *name, int len );
  69 int venus_symlink(struct super_block *sb, struct CodaFid *fid,
  70                   const char *name, int len, const char *symname, int symlen);
  71 int venus_access(struct super_block *sb, struct CodaFid *fid, int mask);
  72 int venus_pioctl(struct super_block *sb, struct CodaFid *fid,
  73                  unsigned int cmd, struct PioctlData *data);
  74 int coda_downcall(struct venus_comm *vcp, int opcode, union outputArgs *out);
  75 int venus_fsync(struct super_block *sb, struct CodaFid *fid);
  76 int venus_statfs(struct dentry *dentry, struct kstatfs *sfs);
  77
  78 /*
  79  * Statistics
  80  */
  81
  82 extern struct venus_comm coda_comms[];
  83 #endif