2002/0623/port/devcap.c (diff list | history)

2002/0622/sys/src/9/port/devcap.c:29,35 – 2002/0623/sys/src/9/port/devcap.c:29,34 (short | long | prev | next)
2001/0527		struct { QLock; int opens; Caphash *first; int nhash; } capalloc;
2002/0622/sys/src/9/port/devcap.c:41,53 – 2002/0623/sys/src/9/port/devcap.c:40,53
2001/0527		Quse, };
2002/0623		/* caphash must be last */
2001/0527		Dirtab capdir[] = { ".", {Qdir,0,QTDIR}, 0, DMDIR|0500, "caphash", {Qhash}, 0, 0200, "capuse", {Quse}, 0, 0222,
2002/0623		"caphash", {Qhash}, 0, 0200,
2001/0527		}; #define NCAPDIR 3
2002/0623		int ncapdir = nelem(capdir);
2001/0527		static Chan* capattach(char *spec)
2002/0622/sys/src/9/port/devcap.c:58,70 – 2002/0623/sys/src/9/port/devcap.c:58,80
2001/0527		static Walkqid* capwalk(Chan *c, Chan *nc, char **name, int nname) { return devwalk(c, nc, name, nname, capdir, NCAPDIR, devgen);
2002/0623		return devwalk(c, nc, name, nname, capdir, ncapdir, devgen);
2001/0527		}
2002/0623		static void capremove(Chan *c) { if(iseve() && c->qid.path == Qhash) ncapdir = nelem(capdir)-1; else error(Eperm); }
2001/0527		static int capstat(Chan *c, uchar *db, int n) { return devstat(c, db, n, capdir, NCAPDIR, devgen);
2002/0623		return devstat(c, db, n, capdir, ncapdir, devgen);
2001/0527		} /*
2002/0622/sys/src/9/port/devcap.c:86,105 – 2002/0623/sys/src/9/port/devcap.c:96,108
2001/0527		qunlock(&capalloc); nexterror(); } qlock(&capalloc); switch((ulong)c->qid.path){ case Qhash:
2002/0622		if(!iseve()) error(Eperm);
2001/0527		if(capalloc.opens > 0){ qunlock(&capalloc); error("exclusive use"); } capalloc.opens++; break; } poperror(); qunlock(&capalloc); c->mode = openmode(omode); c->flag |= COPEN;
2002/0622/sys/src/9/port/devcap.c:164,177 – 2002/0623/sys/src/9/port/devcap.c:167,174
2001/0527		} static void capclose(Chan *c)
2002/0623		capclose(Chan*)
2001/0527		{ if(c->flag & COPEN) if(c->qid.path == Qhash){ qlock(&capalloc); capalloc.opens--; qunlock(&capalloc); } } static long
2002/0622/sys/src/9/port/devcap.c:179,185 – 2002/0623/sys/src/9/port/devcap.c:176,182
2001/0527		{ switch((ulong)c->qid.path){ case Qdir: return devdirread(c, va, n, capdir, nelem(capdir), devgen);
2002/0623		return devdirread(c, va, n, capdir, ncapdir, devgen);
2001/0527		default: error(Eperm);
2002/0622/sys/src/9/port/devcap.c:258,279 – 2002/0623/sys/src/9/port/devcap.c:255,276
2001/0527		} Dev capdevtab = { L'¤', "cap",
2002/0623		.dc= L'¤', .name= "cap",
2001/0527		devreset, devinit,
2002/0109		devshutdown,
2001/0527		capattach, capwalk, capstat, capopen, devcreate, capclose, capread, devbread, capwrite, devbwrite, devremove, devwstat,
2002/0623		.reset= devreset, .init= devinit, .shutdown= devshutdown, .attach= capattach, .walk= capwalk, .stat= capstat, .open= capopen, .create= devcreate, .close= capclose, .read= capread, .bread= devbread, .write= capwrite, .bwrite= devbwrite, .remove= capremove, .wstat= devwstat,
2001/0527		};