Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * include/net/9p/client.h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * 9P Client Definitions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *  Copyright (C) 2008 by Eric Van Hensbergen <ericvh@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *  Copyright (C) 2007 by Latchesar Ionkov <lucho@ionkov.net>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #ifndef NET_9P_CLIENT_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #define NET_9P_CLIENT_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/utsname.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/idr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) /* Number of requests per row */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #define P9_ROW_MAXTAG 255
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) /** enum p9_proto_versions - 9P protocol versions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21)  * @p9_proto_legacy: 9P Legacy mode, pre-9P2000.u
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22)  * @p9_proto_2000u: 9P2000.u extension
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23)  * @p9_proto_2000L: 9P2000.L extension
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) enum p9_proto_versions{
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 	p9_proto_legacy,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	p9_proto_2000u,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	p9_proto_2000L,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34)  * enum p9_trans_status - different states of underlying transports
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35)  * @Connected: transport is connected and healthy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36)  * @Disconnected: transport has been disconnected
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37)  * @Hung: transport is connected by wedged
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39)  * This enumeration details the various states a transport
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40)  * instatiation can be in.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) enum p9_trans_status {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	Connected,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	BeginDisconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	Disconnected,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	Hung,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51)  * enum p9_req_status_t - status of a request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52)  * @REQ_STATUS_ALLOC: request has been allocated but not sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53)  * @REQ_STATUS_UNSENT: request waiting to be sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54)  * @REQ_STATUS_SENT: request sent to server
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55)  * @REQ_STATUS_RCVD: response received from server
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56)  * @REQ_STATUS_FLSHD: request has been flushed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57)  * @REQ_STATUS_ERROR: request encountered an error on the client side
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) enum p9_req_status_t {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	REQ_STATUS_ALLOC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	REQ_STATUS_UNSENT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	REQ_STATUS_SENT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	REQ_STATUS_RCVD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	REQ_STATUS_FLSHD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	REQ_STATUS_ERROR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70)  * struct p9_req_t - request slots
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71)  * @status: status of this request slot
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72)  * @t_err: transport error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73)  * @wq: wait_queue for the client to block on for this request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74)  * @tc: the request fcall structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75)  * @rc: the response fcall structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76)  * @req_list: link for higher level objects to chain requests
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) struct p9_req_t {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	int t_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	struct kref refcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	wait_queue_head_t wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	struct p9_fcall tc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	struct p9_fcall rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	struct list_head req_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89)  * struct p9_client - per client instance state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90)  * @lock: protect @fids and @reqs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91)  * @msize: maximum data size negotiated by protocol
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92)  * @proto_version: 9P protocol version to use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93)  * @trans_mod: module API instantiated with this client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94)  * @status: connection state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95)  * @trans: tranport instance state and API
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96)  * @fids: All active FID handles
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97)  * @reqs: All active requests.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98)  * @name: node name used as client id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)  * The client structure is used to keep track of various per-client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)  * state that has been instantiated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) struct p9_client {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	spinlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	unsigned int msize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	unsigned char proto_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	struct p9_trans_module *trans_mod;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	enum p9_trans_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	void *trans;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	struct kmem_cache *fcall_cache;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 		struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 			int rfd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 			int wfd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 		} fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 		struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 			u16 port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 			bool privport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		} tcp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	} trans_opts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	struct idr fids;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	struct idr reqs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	char name[__NEW_UTS_LEN + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)  * struct p9_fid - file system entity handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)  * @clnt: back pointer to instantiating &p9_client
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)  * @fid: numeric identifier for this handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)  * @mode: current mode of this fid (enum?)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)  * @qid: the &p9_qid server identifier this handle points to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)  * @iounit: the server reported maximum transaction size for this file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)  * @uid: the numeric uid of the local user who owns this handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)  * @rdir: readdir accounting structure (allocated on demand)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)  * @dlist: per-dentry fid tracking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)  * TODO: This needs lots of explanation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) struct p9_fid {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	struct p9_client *clnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	u32 fid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	int mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	struct p9_qid qid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	u32 iounit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	kuid_t uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	void *rdir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	struct hlist_node dlist;	/* list of all fids attached to a dentry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)  * struct p9_dirent - directory entry structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)  * @qid: The p9 server qid for this dirent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)  * @d_off: offset to the next dirent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)  * @d_type: type of file
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)  * @d_name: file name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) struct p9_dirent {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	struct p9_qid qid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	u64 d_off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	unsigned char d_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	char d_name[256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) struct iov_iter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) int p9_show_client_options(struct seq_file *m, struct p9_client *clnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) int p9_client_statfs(struct p9_fid *fid, struct p9_rstatfs *sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) int p9_client_rename(struct p9_fid *fid, struct p9_fid *newdirfid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 		     const char *name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) int p9_client_renameat(struct p9_fid *olddirfid, const char *old_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 		       struct p9_fid *newdirfid, const char *new_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) struct p9_client *p9_client_create(const char *dev_name, char *options);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) void p9_client_destroy(struct p9_client *clnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) void p9_client_disconnect(struct p9_client *clnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) void p9_client_begin_disconnect(struct p9_client *clnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 				const char *uname, kuid_t n_uname, const char *aname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) struct p9_fid *p9_client_walk(struct p9_fid *oldfid, uint16_t nwname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 		const unsigned char * const *wnames, int clone);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) int p9_client_open(struct p9_fid *fid, int mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) int p9_client_fcreate(struct p9_fid *fid, const char *name, u32 perm, int mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 							char *extension);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) int p9_client_link(struct p9_fid *fid, struct p9_fid *oldfid, const char *newname);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) int p9_client_symlink(struct p9_fid *fid, const char *name, const char *symname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 		kgid_t gid, struct p9_qid *qid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) int p9_client_create_dotl(struct p9_fid *ofid, const char *name, u32 flags, u32 mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 		kgid_t gid, struct p9_qid *qid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) int p9_client_clunk(struct p9_fid *fid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) int p9_client_fsync(struct p9_fid *fid, int datasync);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) int p9_client_remove(struct p9_fid *fid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) int p9_client_unlinkat(struct p9_fid *dfid, const char *name, int flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) int p9_client_read(struct p9_fid *fid, u64 offset, struct iov_iter *to, int *err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) int p9_client_read_once(struct p9_fid *fid, u64 offset, struct iov_iter *to,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		int *err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) int p9_client_write(struct p9_fid *fid, u64 offset, struct iov_iter *from, int *err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) int p9_client_readdir(struct p9_fid *fid, char *data, u32 count, u64 offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) int p9dirent_read(struct p9_client *clnt, char *buf, int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 		  struct p9_dirent *dirent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) struct p9_wstat *p9_client_stat(struct p9_fid *fid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) int p9_client_wstat(struct p9_fid *fid, struct p9_wstat *wst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) int p9_client_setattr(struct p9_fid *fid, struct p9_iattr_dotl *attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) struct p9_stat_dotl *p9_client_getattr_dotl(struct p9_fid *fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 							u64 request_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) int p9_client_mknod_dotl(struct p9_fid *oldfid, const char *name, int mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 			dev_t rdev, kgid_t gid, struct p9_qid *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) int p9_client_mkdir_dotl(struct p9_fid *fid, const char *name, int mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 				kgid_t gid, struct p9_qid *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) int p9_client_lock_dotl(struct p9_fid *fid, struct p9_flock *flock, u8 *status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) int p9_client_getlock_dotl(struct p9_fid *fid, struct p9_getlock *fl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) void p9_fcall_fini(struct p9_fcall *fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) struct p9_req_t *p9_tag_lookup(struct p9_client *, u16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) static inline void p9_req_get(struct p9_req_t *r)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	kref_get(&r->refcount);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) static inline int p9_req_try_get(struct p9_req_t *r)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	return kref_get_unless_zero(&r->refcount);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) int p9_req_put(struct p9_req_t *r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) void p9_client_cb(struct p9_client *c, struct p9_req_t *req, int status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) int p9_parse_header(struct p9_fcall *, int32_t *, int8_t *, int16_t *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) int p9stat_read(struct p9_client *, char *, int, struct p9_wstat *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) void p9stat_free(struct p9_wstat *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) int p9_is_proto_dotu(struct p9_client *clnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) int p9_is_proto_dotl(struct p9_client *clnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) struct p9_fid *p9_client_xattrwalk(struct p9_fid *, const char *, u64 *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) int p9_client_xattrcreate(struct p9_fid *, const char *, u64, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) int p9_client_readlink(struct p9_fid *fid, char **target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) int p9_client_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) void p9_client_exit(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) #endif /* NET_9P_CLIENT_H */