1 files changed, 80 insertions, 0 deletions
diff --git a/appl/alphabet/main/mount.b b/appl/alphabet/main/mount.b
new file mode 100644
index 00000000..1b27617d
--- /dev/null
+++ b/appl/alphabet/main/mount.b
@@ -0,0 +1,80 @@
+implement Mount,Mainmodule;
+include "sys.m";
+	sys: Sys;
+include "draw.m";
+include "sh.m";
+include "alphabet/reports.m";
+	reports: Reports;
+		Report, report: import reports;
+include "alphabet.m";
+	alphabet: Alphabet;
+		Value: import alphabet;
+
+Mount: module {};
+
+typesig(): string
+{
+	return "rws-a-b-c-xs";
+}
+
+init()
+{
+	sys = load Sys Sys->PATH;
+	alphabet = load Alphabet Alphabet->PATH;
+	reports = load Reports Reports->PATH;
+}
+
+quit()
+{
+}
+
+After, Before, Create: con 1<<iota;
+
+run(nil: ref Draw->Context, report: ref Reports->Report, nil: chan of string,
+		opts: list of (int, list of ref Alphabet->Value),
+		args: list of ref Alphabet->Value): ref Alphabet->Value
+{
+	flag := Sys->MREPL;
+	aname := "";
+	for(; opts != nil; opts = tl opts){
+		case (hd opts).t0 {
+		'a' =>
+			flag = After & (flag&Sys->MCREATE);
+		'b' =>
+			flag = Before & (flag&Sys->MCREATE);
+		'c' =>
+			flag |= Create;
+		'x' =>
+			aname = (hd (hd opts).t1).s().i;
+		}
+	}
+	r := chan of string;
+	spawn mountproc(r, (hd args).w().i, (hd tl args).s().i, aname, flag, report.start("mount"));
+	return ref Value.Vr(r);
+}
+
+mountproc(r: chan of string, w: chan of ref Sys->FD, dir, aname: string, flag: int, errorc: chan of string)
+{
+	if(<-r != nil){
+		errorc <-= nil;
+		<-w;
+		w <-= nil;
+		exit;
+	}
+	fd := <-w;
+	if(fd == nil){
+		sys->pipe(p := array[2] of ref Sys->FD);
+		w <-= p[0];
+		fd = p[1];
+	}else
+		w <-= nil;
+	if(sys->mount(fd, nil, dir, flag, aname) == -1){
+		e := sys->sprint("mount error on %#q: %r", dir);
+		report(errorc, e);
+		r <-= e;
+		exit;
+	}
+
+	errorc <-= nil;
+	r <-= nil;
+}