2002/0202/port/devcap.c (diff list | history)

2001/0527/sys/src/9/port/devcap.c:251,256 – 2002/0109/sys/src/9/port/devcap.c:251,257 (short | long)
Add devshutdown. rsc Fri Mar 4 12:44:25 2005
2001/0527		devreset, devinit,
2002/0109		devshutdown,
2001/0527		capattach, capwalk, capstat,
2002/0109/sys/src/9/port/devcap.c:192,198 – 2002/0202/sys/src/9/port/devcap.c:192,198 (short | long)
2001/0527		Caphash *p; char *cp; uchar hash[Hashlen]; char *key, *user;
2002/0202		char *key, *from, *to;
2001/0527		char err[256]; switch((ulong)c->qid.path){
2002/0109/sys/src/9/port/devcap.c:214,235 – 2002/0202/sys/src/9/port/devcap.c:214,245
2001/0527		memmove(cp, va, n); cp[n] = 0; user = cp; key = strchr(cp, '@');
2002/0202		from = cp; key = strrchr(cp, '@');
2001/0527		if(key == nil) error(Eshort); *key++ = 0; hmac_sha1((uchar*)user, strlen(user), (uchar*)key, strlen(key), hash, nil);
2002/0202		hmac_sha1((uchar*)from, strlen(from), (uchar*)key, strlen(key), hash, nil);
2001/0527		p = remcap(hash); if(p == nil){ snprint(err, sizeof err, "invalid capability %s@%s", user, key);
2002/0202		snprint(err, sizeof err, "invalid capability %s@%s", from, key);
2001/0527		error(err); }
2002/0202		/* if a from user is supplied, make sure it matches */ to = strchr(from, '@'); if(to == nil){ to = from; } else { *to++ = 0; if(strcmp(from, up->user) != 0) error("capability must match user"); }
2001/0527		/* set user id */ kstrdup(&up->user, user);
2002/0202		kstrdup(&up->user, to);
2001/0527		up->basepri = PriNormal; free(p);
2002/0202/sys/src/9/port/devcap.c:89,94 – 2002/0622/sys/src/9/port/devcap.c:89,96 (short | long)
2001/0527		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");
2002/0622/sys/src/9/port/devcap.c:29,35 – 2002/0623/sys/src/9/port/devcap.c:29,34 (short | long)
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		};
2002/0623/sys/src/9/port/devcap.c:92,101 – 2002/0907/sys/src/9/port/devcap.c:92,97 (short | long)
2001/0527		return c; } if(waserror()){ qunlock(&capalloc); nexterror(); } switch((ulong)c->qid.path){ case Qhash:
2002/0622		if(!iseve())
2002/0623/sys/src/9/port/devcap.c:102,108 – 2002/0907/sys/src/9/port/devcap.c:98,103
2002/0622		error(Eperm);
2001/0527		break; } poperror(); c->mode = openmode(omode); c->flag |= COPEN;
2002/0907/sys/src/9/port/devcap.c:250,271 – 2003/0218/sys/src/9/port/devcap.c:250,271 (short | long)
2001/0527		} Dev capdevtab = {
2002/0623		.dc= L'¤', .name= "cap",
2003/0218		L'¤', "cap",
2001/0527
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,
2003/0218		devreset, devinit, devshutdown, capattach, capwalk, capstat, capopen, devcreate, capclose, capread, devbread, capwrite, devbwrite, capremove, devwstat
2001/0527		};
2003/0218/sys/src/9/port/devcap.c:105,110 – 2003/0222/sys/src/9/port/devcap.c:105,122 (short | long)
2001/0527		return c; }
2003/0222		static char* hashstr(uchar *hash) { static char buf[256]; int i; for(i = 0; i < Hashlen; i++) sprint(buf+2*i, "%2.2ux", hash[i]); buf[2*Hashlen] = 0; return buf; }
2001/0527		static Caphash* remcap(uchar *hash) {