1 files changed, 157 insertions, 0 deletions
diff --git a/utils/acid/os-Plan9.c b/utils/acid/os-Plan9.c
new file mode 100644
index 00000000..1ac60404
--- /dev/null
+++ b/utils/acid/os-Plan9.c
@@ -0,0 +1,157 @@
+/*
+ * Plan9
+ */
+
+#include <lib9.h>
+#include <bio.h>
+#include <ctype.h>
+#include "mach.h"
+#define Extern extern
+#include "acid.h"
+
+int
+opentty(char *tty, int baud)
+{
+	int fd, cfd;
+	char ctty[100];
+
+	if(tty == 0)
+		tty = "/dev/eia0";
+	sprint(ctty, "%sctl", tty);
+	fd = open(tty, 2);
+	if(fd < 0)
+		return -1;
+	if(baud){
+		cfd = open(ctty, 1);
+		if(cfd < 0)
+			return fd;
+		fprint(cfd, "b%d", baud);
+		close(cfd);
+	}
+	return fd;
+}
+
+void
+detach(void)
+{
+	rfork(RFNAMEG|RFNOTEG|RFREND);
+}
+
+char *
+waitfor(int pid)
+{
+	Waitmsg *w;
+	static char buf[ERRMAX];
+
+	for(;;) {
+		w = wait();
+		if(w == nil)
+			error("wait %r");
+		if(w->pid == pid){
+			strecpy(buf, buf+ERRMAX, w->msg);
+			free(w);
+			return buf;
+		}
+		free(w);
+	}
+	return nil;
+}
+
+char *
+runcmd(char *cmd)
+{
+	char *argv[4];
+	int pid;
+
+	argv[0] = "/bin/rc";
+	argv[1] = "-c";
+	argv[2] = cmd;
+	argv[3] = 0;
+
+	pid = fork();
+	switch(pid) {
+	case -1:
+		error("fork %r");
+	case 0:
+		exec("/bin/rc", argv);
+		exits(0);
+	default:
+		return waitfor(pid);
+	}
+	return 0;
+}
+
+void
+catcher(void *junk, char *s)
+{
+	USED(junk);
+
+	if(strstr(s, "interrupt")) {
+		gotint = 1;
+		noted(NCONT);
+	}
+	noted(NDFLT);
+}
+
+void (*notefunc)(void *, char *);
+
+void
+setup_os_notify(void)
+{
+	notify(catcher);
+}
+
+int
+nproc(char **argv)
+{
+	char buf[128];
+	int pid, i, fd;
+
+	pid = fork();
+	switch(pid) {
+	case -1:
+		error("new: fork %r");
+	case 0:
+		rfork(RFNAMEG|RFNOTEG);
+
+		sprint(buf, "/proc/%d/ctl", getpid());
+		fd = open(buf, ORDWR);
+		if(fd < 0)
+			fatal("new: open %s: %r", buf);
+		write(fd, "hang", 4);
+		close(fd);
+
+		close(0);
+		close(1);
+		close(2);
+		for(i = 3; i < NFD; i++)
+			close(i);
+
+		open("/dev/cons", OREAD);
+		open("/dev/cons", OWRITE);
+		open("/dev/cons", OWRITE);
+		exec(argv[0], argv);
+		fatal("new: exec %s: %r");
+	default:
+		install(pid);
+		msg(pid, "waitstop");
+		notes(pid);
+		sproc(pid);
+		dostop(pid);
+		break;
+	}
+
+	return pid;
+}
+
+int
+remote_read(int fd, char *buf, int bytes)
+{
+	return read(fd, buf, bytes);
+}
+
+int
+remote_write(int fd, char *buf, int bytes)
+{
+	return write(fd, buf, bytes);
+}