Import sources from 2011-03-30 iso image

1 files changed, 94 insertions, 0 deletions

diff --git a/sys/src/cmd/vnc/exporter.c b/sys/src/cmd/vnc/exporter.c
new file mode 100755
index 000000000..bf5198bc3
--- /dev/null
+++ b/sys/src/cmd/vnc/exporter.c
@@ -0,0 +1,94 @@
+#include <u.h>
+#include <libc.h>
+#include "compat.h"
+
+typedef struct Exporter	Exporter;
+struct Exporter
+{
+	int	fd;
+	Chan	**roots;
+	int	nroots;
+};
+
+int
+mounter(char *mntpt, int how, int fd, int n)
+{
+	char buf[32];
+	int i, ok, mfd;
+
+	ok = 1;
+	for(i = 0; i < n; i++){
+		snprint(buf, sizeof buf, "%d", i);
+		mfd = dup(fd, -1);
+		if(mount(mfd, -1, mntpt, how, buf) == -1){
+			close(mfd);
+			fprint(2, "can't mount on %s: %r\n", mntpt);
+			ok = 0;
+			break;
+		}
+		close(mfd);
+		if(how == MREPL)
+			how = MAFTER;
+	}
+
+	close(fd);
+
+	return ok;
+}
+
+static void
+extramp(void *v)
+{
+	Exporter *ex;
+
+	rfork(RFNAMEG);
+	ex = v;
+	sysexport(ex->fd, ex->roots, ex->nroots);
+	shutdown();
+	exits(nil);
+}
+
+int
+exporter(Dev **dt, int *fd, int *sfd)
+{
+	Chan **roots;
+	Exporter ex;
+	int p[2], i, n, ed;
+
+	for(n = 0; dt[n] != nil; n++)
+		;
+	if(!n){
+		werrstr("no devices specified");
+		return 0;
+	}
+
+	ed = errdepth(-1);
+	if(waserror()){
+		werrstr(up->error);
+		return 0;
+	}
+
+	roots = smalloc(n * sizeof *roots);
+	for(i = 0; i < n; i++){
+		(*dt[i]->reset)();
+		(*dt[i]->init)();
+		roots[i] = (*dt[i]->attach)("");
+	}
+	poperror();
+	errdepth(ed);
+
+	if(pipe(p) < 0){
+		werrstr("can't make pipe: %r");
+		return 0;
+	}
+
+	*sfd = p[0];
+	*fd = p[1];
+
+	ex.fd = *sfd;
+	ex.roots = roots;
+	ex.nroots = n;
+	kproc("exporter", extramp, &ex);
+
+	return n;
+}