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 coda_vcp(struct super_block * sb)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 84