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- #define KNAMELEN 28 /* max length of name held in kernel */
- #define DOMLEN 64
- #define BLOCKALIGN 8
- typedef struct Alarms Alarms;
- typedef struct Block Block;
- typedef struct CSN CSN;
- typedef struct Chan Chan;
- typedef struct Cmdbuf Cmdbuf;
- typedef struct Cmdtab Cmdtab;
- typedef struct Cname Cname;
- typedef struct Conf Conf;
- typedef struct Dev Dev;
- typedef struct Dirtab Dirtab;
- typedef struct Edfinterface Edfinterface;
- typedef struct Egrp Egrp;
- typedef struct Evalue Evalue;
- typedef struct Fgrp Fgrp;
- typedef struct FPsave FPsave;
- typedef struct DevConf DevConf;
- typedef struct Label Label;
- typedef struct List List;
- typedef struct Log Log;
- typedef struct Logflag Logflag;
- typedef struct Mntcache Mntcache;
- typedef struct Mount Mount;
- typedef struct Mntrpc Mntrpc;
- typedef struct Mntwalk Mntwalk;
- typedef struct Mnt Mnt;
- typedef struct Mhead Mhead;
- typedef struct Note Note;
- typedef struct Page Page;
- typedef struct Palloc Palloc;
- typedef struct Perf Perf;
- typedef struct Pgrps Pgrps;
- typedef struct PhysUart PhysUart;
- typedef struct Pgrp Pgrp;
- typedef struct Physseg Physseg;
- typedef struct Proc Proc;
- typedef struct Pte Pte;
- typedef struct Pthash Pthash;
- typedef struct Queue Queue;
- typedef struct Ref Ref;
- typedef struct Rendez Rendez;
- typedef struct Rgrp Rgrp;
- typedef struct RWlock RWlock;
- typedef struct Schedq Schedq;
- typedef struct Segment Segment;
- typedef struct Session Session;
- typedef struct Task Task;
- typedef struct Talarm Talarm;
- typedef struct Timer Timer;
- typedef struct Uart Uart;
- typedef struct Ureg Ureg;
- typedef struct Waitq Waitq;
- typedef struct Walkqid Walkqid;
- typedef int Devgen(Chan*, char*, Dirtab*, int, int, Dir*);
- #include "fcall.h"
- enum
- {
- SnarfSize = 64*1024,
- };
- struct Conf
- {
- ulong nmach; /* processors */
- ulong nproc; /* processes */
- ulong monitor; /* has monitor? */
- ulong npage0; /* total physical pages of memory */
- ulong npage1; /* total physical pages of memory */
- ulong npage; /* total physical pages of memory */
- ulong upages; /* user page pool */
- ulong nimage; /* number of page cache image headers */
- ulong nswap; /* number of swap pages */
- int nswppo; /* max # of pageouts per segment pass */
- ulong base0; /* base of bank 0 */
- ulong base1; /* base of bank 1 */
- ulong copymode; /* 0 is copy on write, 1 is copy on reference */
- ulong ialloc; /* max interrupt time allocation in bytes */
- ulong pipeqsize; /* size in bytes of pipe queues */
- int nuart; /* number of uart devices */
- };
- struct Label
- {
- jmp_buf buf;
- };
- struct Ref
- {
- Lock lk;
- long ref;
- };
- struct Rendez
- {
- Lock lk;
- Proc *p;
- };
- struct RWlock /* changed from kernel */
- {
- int readers;
- Lock lk;
- QLock x;
- QLock k;
- };
- struct Talarm
- {
- Lock lk;
- Proc *list;
- };
- struct Alarms
- {
- QLock lk;
- Proc *head;
- };
- /*
- * Access types in namec & channel flags
- */
- enum
- {
- Aaccess, /* as in stat, wstat */
- Abind, /* for left-hand-side of bind */
- Atodir, /* as in chdir */
- Aopen, /* for i/o */
- Amount, /* to be mounted or mounted upon */
- Acreate, /* is to be created */
- Aremove, /* will be removed by caller */
- COPEN = 0x0001, /* for i/o */
- CMSG = 0x0002, /* the message channel for a mount */
- /* CCREATE = 0x0004, permits creation if c->mnt */
- CCEXEC = 0x0008, /* close on exec */
- CFREE = 0x0010, /* not in use */
- CRCLOSE = 0x0020, /* remove on close */
- CCACHE = 0x0080, /* client cache */
- };
- /* flag values */
- enum
- {
- BINTR = (1<<0),
- BFREE = (1<<1),
- Bipck = (1<<2), /* ip checksum */
- Budpck = (1<<3), /* udp checksum */
- Btcpck = (1<<4), /* tcp checksum */
- Bpktck = (1<<5), /* packet checksum */
- };
- struct Block
- {
- Block* next;
- Block* list;
- uchar* rp; /* first unconsumed byte */
- uchar* wp; /* first empty byte */
- uchar* lim; /* 1 past the end of the buffer */
- uchar* base; /* start of the buffer */
- void (*free)(Block*);
- ushort flag;
- ushort checksum; /* IP checksum of complete packet (minus media header) */
- };
- #define BLEN(s) ((s)->wp - (s)->rp)
- #define BALLOC(s) ((s)->lim - (s)->base)
- struct Chan
- {
- Ref 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 */
- Mhead* umh; /* mount point that derived Chan; used in unionread */
- Chan* umc; /* channel in union; held for union read */
- QLock umqlock; /* serialize unionreads */
- int uri; /* union read index */
- int dri; /* devdirread index */
- ulong mountid;
- Mntcache *mcp; /* Mount cache pointer */
- Mnt *mux; /* Mnt for clients using me for messages */
- void* aux;
- Qid pgrpid; /* for #p/notepg */
- ulong mid; /* for ns in devproc */
- Chan* mchan; /* channel to mounted server */
- Qid mqid; /* qid of root of mount point */
- Session*session;
- Cname *name;
- };
- struct Cname
- {
- Ref ref;
- int alen; /* allocated length */
- int len; /* strlen(s) */
- char *s;
- };
- struct Dev
- {
- int dc;
- char* name;
- void (*reset)(void);
- void (*init)(void);
- void (*shutdown)(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);
- void (*power)(int); /* power mgt: power(1) => on, power (0) => off */
- int (*config)(int, char*, DevConf*); // returns nil on error
- };
- struct Dirtab
- {
- char name[KNAMELEN];
- Qid qid;
- vlong length;
- ulong perm;
- };
- struct Walkqid
- {
- Chan *clone;
- int nqid;
- Qid qid[1];
- };
- enum
- {
- NSMAX = 1000,
- NSLOG = 7,
- NSCACHE = (1<<NSLOG),
- };
- struct Mntwalk /* state for /proc/#/ns */
- {
- int cddone;
- ulong id;
- Mhead* mh;
- Mount* cm;
- };
- struct Mount
- {
- ulong mountid;
- Mount* next;
- Mhead* head;
- Mount* copy;
- Mount* order;
- Chan* to; /* channel replacing channel */
- int mflag;
- char *spec;
- };
- struct Mhead
- {
- Ref ref;
- RWlock lock;
- Chan* from; /* channel mounted upon */
- Mount* mount; /* what's mounted upon it */
- Mhead* hash; /* Hash chain */
- };
- struct Mnt
- {
- Lock lk;
- /* references are counted using c->ref; channels on this mount point incref(c->mchan) == Mnt.c */
- Chan *c; /* Channel to file service */
- Proc *rip; /* Reader in progress */
- Mntrpc *queue; /* Queue of pending requests on this channel */
- ulong id; /* Multiplexer id for channel check */
- Mnt *list; /* Free list */
- int flags; /* cache */
- int msize; /* data + IOHDRSZ */
- char *version; /* 9P version */
- Queue *q; /* input queue */
- };
- enum
- {
- NUser, /* note provided externally */
- NExit, /* deliver note quietly */
- NDebug, /* print debug message */
- };
- struct Note
- {
- char msg[ERRMAX];
- int flag; /* whether system posted it */
- };
- enum
- {
- RENDLOG = 5,
- RENDHASH = 1<<RENDLOG, /* Hash to lookup rendezvous tags */
- MNTLOG = 5,
- MNTHASH = 1<<MNTLOG, /* Hash to walk mount table */
- NFD = 100, /* per process file descriptors */
- PGHLOG = 9,
- PGHSIZE = 1<<PGHLOG, /* Page hash for image lookup */
- };
- #define REND(p,s) ((p)->rendhash[(s)&((1<<RENDLOG)-1)])
- #define MOUNTH(p,qid) ((p)->mnthash[(qid).path&((1<<MNTLOG)-1)])
- struct Pgrp
- {
- Ref ref; /* also used as a lock when mounting */
- int noattach;
- ulong pgrpid;
- QLock debug; /* single access via devproc.c */
- RWlock ns; /* Namespace n read/one write lock */
- Mhead *mnthash[MNTHASH];
- };
- struct Rgrp
- {
- Ref ref;
- Proc *rendhash[RENDHASH]; /* Rendezvous tag hash */
- };
- struct Egrp
- {
- Ref ref;
- RWlock lk;
- Evalue **ent;
- int nent;
- int ment;
- ulong path; /* qid.path of next Evalue to be allocated */
- ulong vers; /* of Egrp */
- };
- struct Evalue
- {
- char *name;
- char *value;
- int len;
- Evalue *link;
- Qid qid;
- };
- struct Fgrp
- {
- Ref ref;
- Chan **fd;
- int nfd; /* number allocated */
- int maxfd; /* highest fd in use */
- int exceed; /* debugging */
- };
- enum
- {
- DELTAFD = 20, /* incremental increase in Fgrp.fd's */
- NERR = 20
- };
- typedef uvlong Ticks;
- enum
- {
- Running,
- Rendezvous,
- Wakeme,
- };
- struct Proc
- {
- uint state;
- uint mach;
- ulong pid;
- ulong parentpid;
- Pgrp *pgrp; /* Process group for namespace */
- Fgrp *fgrp; /* File descriptor group */
- Rgrp *rgrp;
- Lock rlock; /* sync sleep/wakeup with postnote */
- Rendez *r; /* rendezvous point slept on */
- Rendez sleep; /* place for syssleep/debug */
- int notepending; /* note issued but not acted on */
- int kp; /* true if a kernel process */
- void* rendtag; /* Tag for rendezvous */
- void* rendval; /* Value for rendezvous */
- Proc *rendhash; /* Hash list for tag values */
- int nerrlab;
- Label errlab[NERR];
- char user[KNAMELEN];
- char *syserrstr; /* last error from a system call, errbuf0 or 1 */
- char *errstr; /* reason we're unwinding the error stack, errbuf1 or 0 */
- char errbuf0[ERRMAX];
- char errbuf1[ERRMAX];
- char genbuf[128]; /* buffer used e.g. for last name element from namec */
- char text[KNAMELEN];
- Chan *slash;
- Chan *dot;
- Proc *qnext;
- void (*fn)(void*);
- void *arg;
- char oproc[1024]; /* reserved for os */
- };
- enum
- {
- PRINTSIZE = 256,
- MAXCRYPT = 127,
- NUMSIZE = 12, /* size of formatted number */
- MB = (1024*1024),
- READSTR = 1000, /* temporary buffer size for device reads */
- };
- extern char* conffile;
- extern int cpuserver;
- extern Dev* devtab[];
- extern char *eve;
- extern char hostdomain[];
- extern uchar initcode[];
- extern Queue* kbdq;
- extern Queue* kprintoq;
- extern Ref noteidalloc;
- extern Palloc palloc;
- extern Queue *serialoq;
- extern char* statename[];
- extern int nsyscall;
- extern char *sysname;
- extern uint qiomaxatomic;
- extern Conf conf;
- enum
- {
- LRESPROF = 3,
- };
- /*
- * action log
- */
- struct Log {
- Lock lk;
- int opens;
- char* buf;
- char *end;
- char *rptr;
- int len;
- int nlog;
- int minread;
- int logmask; /* mask of things to debug */
- QLock readq;
- Rendez readr;
- };
- struct Logflag {
- char* name;
- int mask;
- };
- enum
- {
- NCMDFIELD = 128
- };
- struct Cmdbuf
- {
- char *buf;
- char **f;
- int nf;
- };
- struct Cmdtab
- {
- int index; /* used by client to switch on result */
- char *cmd; /* command name */
- int narg; /* expected #args; 0 ==> variadic */
- };
- /* queue state bits, Qmsg, Qcoalesce, and Qkick can be set in qopen */
- enum
- {
- /* Queue.state */
- Qstarve = (1<<0), /* consumer starved */
- Qmsg = (1<<1), /* message stream */
- Qclosed = (1<<2), /* queue has been closed/hungup */
- Qflow = (1<<3), /* producer flow controlled */
- Qcoalesce = (1<<4), /* coallesce packets on read */
- Qkick = (1<<5), /* always call the kick routine after qwrite */
- };
- #define DEVDOTDOT -1
- extern Proc *_getproc(void);
- extern void _setproc(Proc*);
- #define up (_getproc())
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