Import sources from 2011-03-30 iso image

1 files changed, 194 insertions, 0 deletions

diff --git a/sys/src/cmd/aux/stub.c b/sys/src/cmd/aux/stub.c
new file mode 100755
index 000000000..1cf48e31c
--- /dev/null
+++ b/sys/src/cmd/aux/stub.c
@@ -0,0 +1,194 @@
+#include <u.h>
+#include <libc.h>
+#include <fcall.h>
+#include <thread.h>
+#include <9p.h>
+
+uint time0;
+
+enum
+{
+	Qroot = 0,
+	Qkid,
+};
+
+char *kidname;
+uint kidmode;
+
+void
+fsattach(Req *r)
+{
+	char *spec;
+
+	spec = r->ifcall.aname;
+	if(spec && spec[0]){
+		respond(r, "invalid attach specifier");
+		return;
+	}
+	r->ofcall.qid = (Qid){Qroot, 0, QTDIR};
+	r->fid->qid = r->ofcall.qid;
+	respond(r, nil);
+}
+
+char*
+fswalk1(Fid *fid, char *name, Qid *qid)
+{
+	switch((int)fid->qid.path){
+	default:
+		return "path not found";
+	case Qroot:
+		if(strcmp(name, "..") == 0)
+			break;
+		if(strcmp(name, kidname) == 0){
+			fid->qid = (Qid){Qkid, 0, kidmode>>24};
+			break;
+		}
+		return "path not found";
+	case Qkid:
+		if(strcmp(name, "..") == 0){
+			fid->qid = (Qid){Qroot, 0, QTDIR};
+			break;
+		}
+		return "path not found";
+	}
+	*qid = fid->qid;
+	return nil;
+}
+
+void
+fsstat(Req *r)
+{
+	int q;
+	Dir *d;
+
+	d = &r->d;
+	memset(d, 0, sizeof *d);
+	q = r->fid->qid.path;
+	d->qid = r->fid->qid;
+	switch(q){
+	case Qroot:
+		d->name = estrdup9p("/");
+		d->mode = DMDIR|0777;
+		break;
+
+	case Qkid:
+		d->name = estrdup9p(kidname);
+		d->mode = kidmode;
+		break;
+	}
+
+	d->atime = d->mtime = time0;
+	d->uid = estrdup9p("stub");
+	d->gid = estrdup9p("stub");
+	d->muid = estrdup9p("");
+	respond(r, nil);
+}
+
+int
+dirgen(int off, Dir *d, void*)
+{
+	if(off != 0)
+		return -1;
+
+	memset(d, 0, sizeof *d);
+	d->atime = d->mtime = time0;
+	d->name = estrdup9p(kidname);
+	d->mode = kidmode;
+	d->qid = (Qid){Qkid, 0, kidmode>>24};
+	d->qid.type = d->mode>>24;
+	d->uid = estrdup9p("stub");
+	d->gid = estrdup9p("stub");
+	d->muid = estrdup9p("");
+	return 0;
+}
+
+void
+fsread(Req *r)
+{
+	int q;
+
+	q = r->fid->qid.path;
+	switch(q){
+	default:
+		respond(r, "bug");
+		return;
+
+	case Qroot:
+		dirread9p(r, dirgen, nil);
+		respond(r, nil);
+		return;
+	}
+}
+
+void
+fswrite(Req *r)
+{
+	respond(r, "no writing");
+}
+
+void
+fsopen(Req *r)
+{
+	if(r->fid->qid.path != Qroot){
+		respond(r, "permission denied");
+		return;
+	}
+
+	if(r->ifcall.mode != OREAD)
+		respond(r, "permission denied");
+	else
+		respond(r, nil);
+}
+
+Srv fs = {
+	.attach=	fsattach,
+	.open=	fsopen,
+	.read=	fsread,
+	.write=	fswrite,
+	.stat=	fsstat,
+	.walk1=	fswalk1,
+};
+
+void
+usage(void)
+{
+	fprint(2, "usage: aux/stub [-Dd] path/name\n");
+	exits("usage");
+}
+
+void
+main(int argc, char **argv)
+{
+	char *p, *mtpt;
+
+	quotefmtinstall();
+
+	time0 = time(0);
+	ARGBEGIN{
+	case 'D':
+		chatty9p++;
+		break;
+	case 'd':
+		kidmode = DMDIR;
+		break;
+	default:
+		usage();
+	}ARGEND
+
+	if(argc != 1)
+		usage();
+
+	if((p = strrchr(argv[0], '/')) == 0){
+		mtpt = ".";
+		kidname = argv[0];
+	}else if(p == argv[0]){
+		mtpt = "/";
+		kidname = argv[0]+1;
+	}else{
+		mtpt = argv[0];
+		*p++ = '\0';
+		kidname = p;
+	}
+	postmountsrv(&fs, nil, mtpt, MBEFORE);
+	exits(nil);
+}