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wmii/libixp/ixp.h

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/*
*(C)opyright MMIV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
*See LICENSE file for license details.
*/
#include <sys/types.h>
#ifndef nil
#define nil 0
#endif
#define IXP_VERSION "9P2000"
#define IXP_MAX_VERSION 32
#define IXP_MAX_ERROR 128
#define IXP_MAX_CACHE 32
#define IXP_MAX_MSG 8192
#define IXP_MAX_FLEN 128
#define IXP_MAX_ULEN 32
#define IXP_MAX_STAT 64
#define IXP_MAX_WELEM 16 /*MAXWELEM */
#define IXP_MAX_TFUNCS 14
/*
size[4] Tversion tag[2] msize[4] version[s]
size[4] Rversion tag[2] msize[4] version[s]
size[4] Tauth tag[2] afid[4] uname[s] aname[s]
size[4] Rauth tag[2] aqid[13]
size[4] Rerror tag[2] ename[s]
size[4] Tflush tag[2] oldtag[2]
size[4] Rflush tag[2]
size[4] Tattach tag[2] fid[4] afid[4] uname[s] aname[s]
size[4] Rattach tag[2] qid[13]
size[4] Twalk tag[2] fid[4] newfid[4] nwname[2] nwname*(wname[s])
size[4] Rwalk tag[2] nwqid[2] nwqid*(wqid[13])
size[4] Topen tag[2] fid[4] mode[1]
size[4] Ropen tag[2] qid[13] iounit[4]
size[4] Tcreate tag[2] fid[4] name[s] perm[4] mode[1]
size[4] Rcreate tag[2] qid[13] iounit[4]
size[4] Tread tag[2] fid[4] offset[8] count[4]
size[4] Rread tag[2] count[4] data[count]
size[4] Twrite tag[2] fid[4] offset[8] count[4] data[count]
size[4] Rwrite tag[2] count[4]
size[4] Tclunk tag[2] fid[4]
size[4] Rclunk tag[2]
size[4] Tremove tag[2] fid[4]
size[4] Rremove tag[2]
size[4] Tstat tag[2] fid[4]
size[4] Rstat tag[2] stat[n]
size[4] Twstat tag[2] fid[4] stat[n]
size[4] Rwstat tag[2]
stat[n]:
size[2] total byte count of the following data
type[2] for kernel use
dev[4] for kernel use
qid.type[1] the type of the file (directory, etc.),
represented as a bit vector corresponding to the high 8 bits of the file's mode word.
qid.vers[4] version number for given path
qid.path[8] the file server's unique identification for the file
mode[4] permissions and flags
atime[4] last access time
mtime[4] last modification time
length[8] length of file in bytes
name[ s ] file name; must be / if the file is the root directory of the server
uid[ s ] owner name
gid[ s ] group name
muid[ s ]
*/
/*9P message types */
enum {
TVERSION = 100,
RVERSION,
TAUTH = 102,
RAUTH,
TATTACH = 104,
RATTACH,
TERROR = 106,
RERROR,
TFLUSH = 108,
RFLUSH,
TWALK = 110,
RWALK,
TOPEN = 112,
ROPEN,
TCREATE = 114,
RCREATE,
TREAD = 116,
RREAD,
TWRITE = 118,
RWRITE,
TCLUNK = 120,
RCLUNK,
TREMOVE = 122,
RREMOVE,
TSTAT = 124,
RSTAT,
TWSTAT = 126,
RWSTAT,
};
/*borrowed from libc.h of Plan 9 */
#define DMDIR 0x80000000 /*mode bit for directories */
#define DMAPPEND 0x40000000 /*mode bit for append only files */
#define DMEXCL 0x20000000 /*mode bit for exclusive use files */
#define DMMOUNT 0x10000000 /*mode bit for mounted channel */
#define DMAUTH 0x08000000 /*mode bit for authentication file */
#define DMTMP 0x04000000 /*mode bit for non-backed-up file */
#define DMREAD 0x4<<6 /*mode bit for read permission */
#define DMWRITE 0x2<<6 /*mode bit for write permission */
#define DMEXEC 0x1<<6 /*mode bit for execute permission */
/*modes */
enum {
IXP_OREAD = 0x00,
IXP_OWRITE = 0x01,
IXP_ORDWR = 0x02,
IXP_OEXEC = 0x03,
IXP_OEXCL = 0x04,
IXP_OTRUNC = 0x10,
IXP_OREXEC = 0x20,
IXP_ORCLOSE = 0x40,
IXP_OAPPEND = 0x80,
};
/*qid.types */
enum {
IXP_QTDIR = 0x80,
IXP_QTAPPEND = 0x40,
IXP_QTEXCL = 0x20,
IXP_QTMOUNT = 0x10,
IXP_QTAUTH = 0x08,
IXP_QTTMP = 0x04,
IXP_QTSYMLINK = 0x02,
IXP_QTLINK = 0x01,
IXP_QTFILE = 0x00,
};
#define IXP_NOTAG (unsigned short)~0U /*Dummy tag */
#define IXP_NOFID (unsigned int)~0 /*No auth */
typedef struct {
unsigned char type;
unsigned int version;
unsigned long long path;
} Qid;
/*stat structure */
typedef struct {
unsigned short type;
unsigned int dev;
Qid qid;
unsigned int mode;
unsigned int atime;
unsigned int mtime;
unsigned long long length;
char name[IXP_MAX_FLEN];
char uid[IXP_MAX_ULEN];
char gid[IXP_MAX_ULEN];
char muid[IXP_MAX_ULEN];
} Stat;
typedef struct {
unsigned char id;
unsigned short tag;
unsigned int fid;
unsigned int maxmsg; /*Tversion, Rversion */
char version[IXP_MAX_VERSION]; /*Tversion, Rversion */
unsigned short oldtag; /*Tflush */
char errstr[IXP_MAX_ERROR]; /*Rerror */
Qid qid; /*Rattach, Ropen, Rcreate */
unsigned int iounit; /*Ropen, Rcreate */
Qid aqid; /*Rauth */
unsigned int afid; /*Tauth, Tattach */
char uname[IXP_MAX_ULEN]; /*Tauth, Tattach */
char aname[IXP_MAX_FLEN]; /*Tauth, Tattach */
unsigned int perm; /*Tcreate */
char name[IXP_MAX_FLEN]; /*Tcreate */
unsigned char mode; /*Tcreate, Topen */
unsigned int newfid; /*Twalk */
unsigned short nwname; /*Twalk */
char wname[IXP_MAX_WELEM][IXP_MAX_FLEN]; /*Twalk */
unsigned short nwqid; /*Rwalk */
Qid wqid[IXP_MAX_WELEM]; /*Rwalk */
unsigned long long offset; /*Tread, Twrite */
unsigned int count; /*Tread, Twrite, Rread */
Stat stat; /*Rstat */
unsigned short nstat; /*Twstat, Rstat */
unsigned char data[IXP_MAX_MSG]; /*Twrite, Rread, Twstat,
*Rstat */
} Fcall;
typedef struct IXPServer IXPServer;
typedef struct IXPConn IXPConn;
typedef struct IXPMap IXPMap;
struct IXPMap {
unsigned int fid;
Qid qid;
};
struct IXPConn {
int fd;
void (*read) (IXPServer *, IXPConn *);
void (*close) (IXPServer *, IXPConn *);
IXPMap **map;
size_t mapsz;
Fcall *fcall;
Fcall **pend;
size_t pendsz;
};
struct IXPServer {
int running;
IXPConn **conn;
size_t connsz;
int maxfd;
fd_set rd;
};
typedef struct {
int fd;
unsigned int root_fid;
Qid root_qid;
Fcall fcall;
char *errstr;
} IXPClient;
/* client.c */
int ixp_client_init(IXPClient *c, char *address);
void ixp_client_deinit(IXPClient *c);
int ixp_client_remove(IXPClient *c, unsigned int newfid, char *filepath);
int ixp_client_create(IXPClient *c, unsigned int dirfid, char *name,
unsigned int perm, unsigned char mode);
int ixp_client_walk(IXPClient *c, unsigned int newfid, char *filepath);
int ixp_client_open(IXPClient *c, unsigned int newfid, char *filepath,
unsigned char mode);
int ixp_client_read(IXPClient *c, unsigned int fid,
unsigned long long offset, void *result,
unsigned int res_len);
int ixp_client_write(IXPClient *c, unsigned int fid,
unsigned long long offset,
unsigned int count, unsigned char *data);
int ixp_client_close(IXPClient *c, unsigned int fid);
/* convert.c */
void *ixp_enc_u8(unsigned char *msg, unsigned char val);
void *ixp_dec_u8(unsigned char *msg, unsigned char *val);
void *ixp_enc_u16(unsigned char *msg, unsigned short val);
void *ixp_dec_u16(unsigned char *msg, unsigned short *val);
void *ixp_enc_u32(unsigned char *msg, unsigned int val);
void *ixp_dec_u32(unsigned char *msg, unsigned int *val);
void *ixp_enc_u64(unsigned char *msg, unsigned long long val);
void *ixp_dec_u64(unsigned char *msg, unsigned long long *val);
void *ixp_enc_string(unsigned char *msg, const char *s);
void *ixp_dec_string(unsigned char *msg, char *string,
unsigned short stringlen, unsigned short *len);
void *ixp_enc_data(unsigned char *msg, unsigned char *data,
unsigned int datalen);
void *ixp_dec_data(unsigned char *msg, unsigned char *data,
unsigned int datalen);
void *ixp_enc_prefix(unsigned char *msg, unsigned int size,
unsigned char id, unsigned short tag);
void *ixp_dec_prefix(unsigned char *msg, unsigned int *size,
unsigned char *id, unsigned short *tag);
void *ixp_enc_qid(unsigned char *msg, Qid *qid);
void *ixp_dec_qid(unsigned char *msg, Qid *qid);
void *ixp_enc_stat(unsigned char *msg, Stat *stat);
void *ixp_dec_stat(unsigned char *msg, Stat *stat);
/* message.c */
unsigned short ixp_sizeof_stat(Stat *stat);
unsigned int ixp_fcall_to_msg(Fcall *fcall, void *msg, unsigned int msglen);
unsigned int ixp_msg_to_fcall(void *msg, unsigned int msglen, Fcall *fcall);
/* server.c */
char *ixp_server_loop(IXPServer *s);
IXPMap *ixp_server_fid2map(IXPConn *c, unsigned int fid);
/* socket.c */
int ixp_connect_sock(char *address);
int ixp_accept_sock(int fd);
int ixp_create_sock(char *address, char **errstr);
/* transport.c */
unsigned int ixp_send_message(int fd, void *msg, unsigned int msize, char **errstr);
unsigned int ixp_recv_message(int fd, void *msg, unsigned int msglen, char **errstr);
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