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95 lines
3.3 KiB
95 lines
3.3 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __CODA_PSDEV_H |
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#define __CODA_PSDEV_H |
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#include <linux/backing-dev.h> |
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#include <linux/magic.h> |
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#include <linux/mutex.h> |
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#define CODA_PSDEV_MAJOR 67 |
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#define MAX_CODADEVS 5 /* how many do we allow */ |
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struct kstatfs; |
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/* messages between coda filesystem in kernel and Venus */ |
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struct upc_req { |
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struct list_head uc_chain; |
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caddr_t uc_data; |
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u_short uc_flags; |
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u_short uc_inSize; /* Size is at most 5000 bytes */ |
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u_short uc_outSize; |
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u_short uc_opcode; /* copied from data to save lookup */ |
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int uc_unique; |
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wait_queue_head_t uc_sleep; /* process' wait queue */ |
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}; |
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#define CODA_REQ_ASYNC 0x1 |
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#define CODA_REQ_READ 0x2 |
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#define CODA_REQ_WRITE 0x4 |
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#define CODA_REQ_ABORT 0x8 |
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/* communication pending/processing queues */ |
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struct venus_comm { |
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u_long vc_seq; |
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wait_queue_head_t vc_waitq; /* Venus wait queue */ |
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struct list_head vc_pending; |
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struct list_head vc_processing; |
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int vc_inuse; |
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struct super_block *vc_sb; |
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struct mutex vc_mutex; |
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}; |
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static inline struct venus_comm *coda_vcp(struct super_block *sb) |
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{ |
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return (struct venus_comm *)((sb)->s_fs_info); |
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} |
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/* upcalls */ |
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int venus_rootfid(struct super_block *sb, struct CodaFid *fidp); |
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int venus_getattr(struct super_block *sb, struct CodaFid *fid, |
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struct coda_vattr *attr); |
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int venus_setattr(struct super_block *, struct CodaFid *, struct coda_vattr *); |
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int venus_lookup(struct super_block *sb, struct CodaFid *fid, |
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const char *name, int length, int *type, |
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struct CodaFid *resfid); |
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int venus_close(struct super_block *sb, struct CodaFid *fid, int flags, |
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kuid_t uid); |
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int venus_open(struct super_block *sb, struct CodaFid *fid, int flags, |
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struct file **f); |
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int venus_mkdir(struct super_block *sb, struct CodaFid *dirfid, |
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const char *name, int length, |
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struct CodaFid *newfid, struct coda_vattr *attrs); |
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int venus_create(struct super_block *sb, struct CodaFid *dirfid, |
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const char *name, int length, int excl, int mode, |
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struct CodaFid *newfid, struct coda_vattr *attrs); |
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int venus_rmdir(struct super_block *sb, struct CodaFid *dirfid, |
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const char *name, int length); |
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int venus_remove(struct super_block *sb, struct CodaFid *dirfid, |
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const char *name, int length); |
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int venus_readlink(struct super_block *sb, struct CodaFid *fid, |
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char *buffer, int *length); |
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int venus_rename(struct super_block *sb, struct CodaFid *new_fid, |
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struct CodaFid *old_fid, size_t old_length, |
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size_t new_length, const char *old_name, |
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const char *new_name); |
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int venus_link(struct super_block *sb, struct CodaFid *fid, |
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struct CodaFid *dirfid, const char *name, int len ); |
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int venus_symlink(struct super_block *sb, struct CodaFid *fid, |
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const char *name, int len, const char *symname, int symlen); |
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int venus_access(struct super_block *sb, struct CodaFid *fid, int mask); |
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int venus_pioctl(struct super_block *sb, struct CodaFid *fid, |
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unsigned int cmd, struct PioctlData *data); |
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int coda_downcall(struct venus_comm *vcp, int opcode, union outputArgs *out, |
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size_t nbytes); |
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int venus_fsync(struct super_block *sb, struct CodaFid *fid); |
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int venus_statfs(struct dentry *dentry, struct kstatfs *sfs); |
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int venus_access_intent(struct super_block *sb, struct CodaFid *fid, |
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bool *access_intent_supported, |
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size_t count, loff_t ppos, int type); |
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/* |
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* Statistics |
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*/ |
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extern struct venus_comm coda_comms[]; |
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#endif
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