1992/0428/port/devproc.c (diff list | history)

1992/0423/sys/src/9/port/devproc.c:42,58 – 1992/0428/sys/src/9/port/devproc.c:42,59 (short | long | prev | next)
1990/1128		* 23 bits of process slot number + 1
1990/11211		* in vers, * 32 bits of pid, for consistency checking * If notepg, c->pgrpid.path is pgrp slot, .vers is pgrpid.
1992/0428		* If notepg, c->pgrpid.path is pgrp slot, .vers is noteid.
1990/0227		*/ #define NPROC (sizeof procdir/sizeof(Dirtab)) #define QSHIFT 4 /* location in qid of proc slot # */
1990/11211		#define QID(q) (((q).path&0x0000000F)>>0)
1990/1128		#define SLOT(q) ((((q).path&0x07FFFFFF0)>>QSHIFT)-1)
1990/11211		#define PID(q) ((q).vers)
1990/0227
1992/0428		#define QID(q) (((q).path&0x0000000F)>>0) #define SLOT(q) ((((q).path&0x07FFFFFF0)>>QSHIFT)-1) #define PID(q) ((q).vers) #define NOTEID(q) ((q).vers)
1991/1109		void procctlreq(Proc*, char*, int); int procctlmemio(Proc*, ulong, int, void*, int);
1991/1110		Chan *procctlnotepg(Chan*, void*, int); Chan *proctext(Chan*, Proc*); Segment *txt2data(Proc*, Segment*); int procstopped(void*);
1992/0423/sys/src/9/port/devproc.c:171,177 – 1992/0428/sys/src/9/port/devproc.c:172,178
1990/1115		if(omode!=OWRITE || pg->pgrpid==1) /* easy to do by mistake */
1990/11211		error(Eperm); c->pgrpid.path = pg->index+1; c->pgrpid.vers = pg->pgrpid;
1992/0428		c->pgrpid.vers = p->noteid;
1990/1110		break;
1990/0227		default:
1992/0114		pprint("procopen %lux\n", c->qid);
1992/0423/sys/src/9/port/devproc.c:386,394 – 1992/0428/sys/src/9/port/devproc.c:387,395
1990/1110
1990/1126		p = proctab(SLOT(c->qid));
1991/1109		/* Use the remembered pgrp id in the channel rather than the process pgrpid */
1990/1110		if(QID(c->qid) == Qnotepg){
1991/1109		procctlnotepg(c, va, n);
1992/0428		/* Use the remembered noteid in the channel rather than the process pgrpid */ if(QID(c->qid) == Qnotepg) { pgrpnote(NOTEID(c->pgrpid), va, n, NUser);
1990/1110		return n; }
1992/0423/sys/src/9/port/devproc.c:507,532 – 1992/0428/sys/src/9/port/devproc.c:508,513
1991/1110		poperror(); return tc; }                  Chan *
1991/1109		procctlnotepg(Chan *c, void *va, int n) { Pgrp *pg;                  pg = pgrptab(c->pgrpid.path-1); qlock(&pg->debug); if(waserror()){ qunlock(&pg->debug); nexterror(); } if(pg->pgrpid != c->pgrpid.vers){ qunlock(&pg->debug); error(Eprocdied); } pgrpnote(pg, va, n, NUser); poperror(); qunlock(&pg->debug); } void