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#define Rendez KRendez
typedef struct Block Block;
typedef struct Chan Chan;
typedef struct Cname Cname;
typedef struct Dev Dev;
typedef struct Dirtab Dirtab;
typedef struct Proc Proc;
typedef struct Ref Ref;
typedef struct Rendez Rendez;
typedef struct Walkqid Walkqid;
typedef int Devgen(Chan*, Dirtab*, int, int, Dir*);
enum
{
KNAMELEN = 28,
NERR = 15,
COPEN = 0x0001, /* for i/o */
CFREE = 0x0010, /* not in use */
};
struct Ref
{
Lock;
int ref;
};
struct Rendez
{
Lock;
Proc *p;
};
struct Chan
{
Ref;
Chan* next; /* allocation */
Chan* link;
vlong offset; /* in file */
ushort type;
ulong dev;
ushort mode; /* read/write */
ushort flag;
Qid qid;
int fid; /* for devmnt */
ulong iounit; /* chunk size for i/o; 0==default */
void* aux;
Cname *name;
};
struct Cname
{
Ref;
int alen; /* allocated length */
int len; /* strlen(s) */
char *s;
};
struct Dev
{
int dc;
char* name;
void (*reset)(void);
void (*init)(void);
Chan* (*attach)(char*);
Walkqid* (*walk)(Chan*, Chan*, char**, int);
int (*stat)(Chan*, uchar*, int);
Chan* (*open)(Chan*, int);
void (*create)(Chan*, char*, int, ulong);
void (*close)(Chan*);
long (*read)(Chan*, void*, long, vlong);
Block* (*bread)(Chan*, long, ulong);
long (*write)(Chan*, void*, long, vlong);
long (*bwrite)(Chan*, Block*, ulong);
void (*remove)(Chan*);
int (*wstat)(Chan*, uchar*, int);
};
struct Dirtab
{
char name[KNAMELEN];
Qid qid;
vlong length;
long perm;
};
struct Walkqid
{
Chan *clone;
int nqid;
Qid qid[1];
};
struct Proc
{
Lock rlock; /* for rendsleep, rendwakeup, intr */
Rendez *r;
int intr;
char name[KNAMELEN];
char *user;
char error[ERRMAX];
int nerrlab;
jmp_buf errlab[NERR];
char genbuf[128]; /* buffer used e.g. for last name element from namec */
};
#define DEVDOTDOT -1
extern Proc **privup;
#define up (*privup)
extern char *eve;
extern Dev* devtab[];
Chan* cclone(Chan*);
void cclose(Chan*);
void cnameclose(Cname*);
int decref(Ref*);
Chan* devattach(int, char*);
Block* devbread(Chan*, long, ulong);
long devbwrite(Chan*, Block*, ulong);
void devcreate(Chan*, char*, int, ulong);
void devdir(Chan*, Qid, char*, vlong, char*, long, Dir*);
long devdirread(Chan*, char*, long, Dirtab*, int, Devgen*);
Devgen devgen;
void devinit(void);
Chan* devopen(Chan*, int, Dirtab*, int, Devgen*);
void devremove(Chan*);
void devreset(void);
int devstat(Chan*, uchar*, int, Dirtab*, int, Devgen*);
Walkqid* devwalk(Chan*, Chan*, char**, int, Dirtab*, int, Devgen*);
int devwstat(Chan*, uchar*, int);
void error(char*);
int incref(Ref*);
void isdir(Chan*);
void kproc(char*, void(*)(void*), void*);
void mkqid(Qid*, vlong, ulong, int);
void nexterror(void);
Chan* newchan(void);
Cname* newcname(char*);
int openmode(ulong);
void panic(char*, ...);
int readstr(ulong, char*, ulong, char*);
long seconds(void);
void* smalloc(ulong);
#define poperror() up->nerrlab--
#define waserror() (up->nerrlab++, setjmp(up->errlab[up->nerrlab-1]))
void initcompat(void);
void rendintr(void *v);
void rendclearintr(void);
void rendsleep(Rendez*, int(*)(void*), void*);
int rendwakeup(Rendez*);
void kexit(void);
int sysexport(int fd, Chan **roots, int nroots);
int errdepth(int ed);
void newup(char *name);
int exporter(Dev**, int*, int*);
int mounter(char *mntpt, int how, int fds, int n);
void shutdown(void);
void screeninit(int, int, char*);
#pragma varargck argpos panic 1
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