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-rw-r--r--src/misc/openpty.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/src/misc/openpty.c b/src/misc/openpty.c
new file mode 100644
index 00000000..0b4eb221
--- /dev/null
+++ b/src/misc/openpty.c
@@ -0,0 +1,33 @@
+#include <stdlib.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <pty.h>
+#include <stdio.h>
+
+/* Nonstandard, but vastly superior to the standard functions */
+
+int openpty(int *m, int *s, char *name, const struct termios *tio, const struct winsize *ws)
+{
+ int n=0;
+ char buf[20];
+
+ *m = open("/dev/ptmx", O_RDWR|O_NOCTTY);
+ if (!*m) return -1;
+
+ if (ioctl(*m, TIOCSPTLCK, &n) || ioctl (*m, TIOCGPTN, &n)) {
+ close(*m);
+ return -1;
+ }
+
+ if (!name) name = buf;
+ snprintf(name, sizeof buf, "/dev/pts/%d", n);
+ if ((*s = open(name, O_RDWR|O_NOCTTY)) < 0) {
+ close(*m);
+ return -1;
+ }
+
+ if (tio) tcsetattr(*s, TCSANOW, tio);
+ if (ws) ioctl(*s, TIOCSWINSZ, ws);
+
+ return 0;
+}