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1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef __CODA_PSDEV_H3#define __CODA_PSDEV_H4 5#include <linux/backing-dev.h>6#include <linux/magic.h>7#include <linux/mutex.h>8 9#define CODA_PSDEV_MAJOR 6710#define MAX_CODADEVS 5 /* how many do we allow */11 12struct kstatfs;13 14/* messages between coda filesystem in kernel and Venus */15struct upc_req {16 struct list_head uc_chain;17 caddr_t uc_data;18 u_short uc_flags;19 u_short uc_inSize; /* Size is at most 5000 bytes */20 u_short uc_outSize;21 u_short uc_opcode; /* copied from data to save lookup */22 int uc_unique;23 wait_queue_head_t uc_sleep; /* process' wait queue */24};25 26#define CODA_REQ_ASYNC 0x127#define CODA_REQ_READ 0x228#define CODA_REQ_WRITE 0x429#define CODA_REQ_ABORT 0x830 31/* communication pending/processing queues */32struct venus_comm {33 u_long vc_seq;34 wait_queue_head_t vc_waitq; /* Venus wait queue */35 struct list_head vc_pending;36 struct list_head vc_processing;37 int vc_inuse;38 struct super_block *vc_sb;39 struct mutex vc_mutex;40};41 42static inline struct venus_comm *coda_vcp(struct super_block *sb)43{44 return (struct venus_comm *)((sb)->s_fs_info);45}46 47/* upcalls */48int venus_rootfid(struct super_block *sb, struct CodaFid *fidp);49int venus_getattr(struct super_block *sb, struct CodaFid *fid,50 struct coda_vattr *attr);51int venus_setattr(struct super_block *, struct CodaFid *, struct coda_vattr *);52int venus_lookup(struct super_block *sb, struct CodaFid *fid,53 const char *name, int length, int *type,54 struct CodaFid *resfid);55int venus_close(struct super_block *sb, struct CodaFid *fid, int flags,56 kuid_t uid);57int venus_open(struct super_block *sb, struct CodaFid *fid, int flags,58 struct file **f);59int venus_mkdir(struct super_block *sb, struct CodaFid *dirfid,60 const char *name, int length,61 struct CodaFid *newfid, struct coda_vattr *attrs);62int venus_create(struct super_block *sb, struct CodaFid *dirfid,63 const char *name, int length, int excl, int mode,64 struct CodaFid *newfid, struct coda_vattr *attrs);65int venus_rmdir(struct super_block *sb, struct CodaFid *dirfid,66 const char *name, int length);67int venus_remove(struct super_block *sb, struct CodaFid *dirfid,68 const char *name, int length);69int venus_readlink(struct super_block *sb, struct CodaFid *fid,70 char *buffer, int *length);71int venus_rename(struct super_block *sb, struct CodaFid *new_fid,72 struct CodaFid *old_fid, size_t old_length,73 size_t new_length, const char *old_name,74 const char *new_name);75int venus_link(struct super_block *sb, struct CodaFid *fid,76 struct CodaFid *dirfid, const char *name, int len );77int venus_symlink(struct super_block *sb, struct CodaFid *fid,78 const char *name, int len, const char *symname, int symlen);79int venus_access(struct super_block *sb, struct CodaFid *fid, int mask);80int venus_pioctl(struct super_block *sb, struct CodaFid *fid,81 unsigned int cmd, struct PioctlData *data);82int coda_downcall(struct venus_comm *vcp, int opcode, union outputArgs *out,83 size_t nbytes);84int venus_fsync(struct super_block *sb, struct CodaFid *fid);85int venus_statfs(struct dentry *dentry, struct kstatfs *sfs);86int venus_access_intent(struct super_block *sb, struct CodaFid *fid,87 bool *access_intent_supported,88 size_t count, loff_t ppos, int type);89 90/*91 * Statistics92 */93 94extern struct venus_comm coda_comms[];95#endif96