1990/0321/port/chan.c (diff list | history)

1990/0303/sys/src/9/port/chan.c:149,155 – 1990/0321/sys/src/9/port/chan.c:149,155 (short | long | prev | next)
1990/0227		Mtab *mt, *mz; Mount *mnt, *omnt, *nmnt, *pmnt; Pgrp *pg; int isnew;
1990/0321		int islast;
1990/0227		if(CHDIR & (old->qid^new->qid)) error(0, Emount);
1990/0303/sys/src/9/port/chan.c:157,166 – 1990/0321/sys/src/9/port/chan.c:157,171
1990/0227		error(0, Emount); mz = 0; isnew = 0;
1990/0321		islast = 0; mnt = 0;
1990/0227		pg = u->p->pgrp; lock(pg); if(waserror()){
1990/0321		if(mnt){ mnt->c = 0; /* caller will close new */ closemount(mnt); }
1990/0227		unlock(pg); nexterror(); }
1990/0303/sys/src/9/port/chan.c:171,188 – 1990/0321/sys/src/9/port/chan.c:176,193
1990/0227		for(i=0; i<pg->nmtab; i++,mt++){ if(mt->c==0 && mz==0) mz = mt; else if(eqchan(mt->c, old, CHDIR|QPATH))
1990/0321		else if(eqchan(mt->c, old, CHDIR|QPATH)){ mz = 0;
1990/0227		goto Found;
1990/0321		}
1990/0227		} isnew = 1; if(mz == 0){ if(i == conf.nmtab) error(0, Enomount); mz = &pg->mtab[i]; pg->nmtab++;
1990/0321		islast++;
1990/0227		} mz->mnt = 0; mz->c = old; mt = mz; Found:
1990/0303/sys/src/9/port/chan.c:244,251 – 1990/0321/sys/src/9/port/chan.c:249,260
1990/0227		} incref(new); if(isnew)
1990/0321		if(mz){ mz->c = old;
1990/0227		incref(old);
1990/0321		} if(islast) pg->nmtab++;
1990/0227		unlock(pg); poperror(); return mnt->mountid;
1990/0303/sys/src/9/port/chan.c:286,292 – 1990/0321/sys/src/9/port/chan.c:295,301
1990/0227		Found: lock(pg); if(!eqchan(mt->c, c, CHDIR|QPATH)){ /* table changed underfoot */ print("domount: changed underfoot?\n");
1990/0321		pprint("domount: changed underfoot?\n");
1990/0227		unlock(pg); return c; }
1990/0303/sys/src/9/port/chan.c:333,339 – 1990/0321/sys/src/9/port/chan.c:342,348
1990/0227		goto Notfound; } if(c->mountid != mnt->mountid){ print("walk: changed underfoot?\n");
1990/0321		pprint("walk: changed underfoot?\n");
1990/0227		unlock(pg); goto Notfound; }
1990/0303/sys/src/9/port/chan.c:353,358 – 1990/0321/sys/src/9/port/chan.c:362,368
1990/0227		if(!first) close(c); nc->mnt = mnt;
1990/0321		nc->mountid = mnt->mountid;
1990/0227		c = nc; first = 0; goto Again;
1990/0303/sys/src/9/port/chan.c:391,397 – 1990/0321/sys/src/9/port/chan.c:401,407
1990/0227		} mnt = c->mnt; if(c->mountid != mnt->mountid){ print("createdir: changed underfoot?\n");
1990/0321		pprint("createdir: changed underfoot?\n");
1990/0227		error(0, Enocreate); } do{