ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/arch/um/drivers/pty.c b/marvell/linux/arch/um/drivers/pty.c
new file mode 100644
index 0000000..39c6006
--- /dev/null
+++ b/marvell/linux/arch/um/drivers/pty.c
@@ -0,0 +1,165 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <termios.h>
+#include <sys/stat.h>
+#include "chan_user.h"
+#include <os.h>
+#include <um_malloc.h>
+
+struct pty_chan {
+ void (*announce)(char *dev_name, int dev);
+ int dev;
+ int raw;
+ struct termios tt;
+ char dev_name[sizeof("/dev/pts/0123456\0")];
+};
+
+static void *pty_chan_init(char *str, int device, const struct chan_opts *opts)
+{
+ struct pty_chan *data;
+
+ data = uml_kmalloc(sizeof(*data), UM_GFP_KERNEL);
+ if (data == NULL)
+ return NULL;
+
+ *data = ((struct pty_chan) { .announce = opts->announce,
+ .dev = device,
+ .raw = opts->raw });
+ return data;
+}
+
+static int pts_open(int input, int output, int primary, void *d,
+ char **dev_out)
+{
+ struct pty_chan *data = d;
+ char *dev;
+ int fd, err;
+
+ fd = get_pty();
+ if (fd < 0) {
+ err = -errno;
+ printk(UM_KERN_ERR "open_pts : Failed to open pts\n");
+ return err;
+ }
+
+ if (data->raw) {
+ CATCH_EINTR(err = tcgetattr(fd, &data->tt));
+ if (err)
+ goto out_close;
+
+ err = raw(fd);
+ if (err)
+ goto out_close;
+ }
+
+ dev = ptsname(fd);
+ sprintf(data->dev_name, "%s", dev);
+ *dev_out = data->dev_name;
+
+ if (data->announce)
+ (*data->announce)(dev, data->dev);
+
+ return fd;
+
+out_close:
+ close(fd);
+ return err;
+}
+
+static int getmaster(char *line)
+{
+ struct stat buf;
+ char *pty, *bank, *cp;
+ int master, err;
+
+ pty = &line[strlen("/dev/ptyp")];
+ for (bank = "pqrs"; *bank; bank++) {
+ line[strlen("/dev/pty")] = *bank;
+ *pty = '0';
+ /* Did we hit the end ? */
+ if ((stat(line, &buf) < 0) && (errno == ENOENT))
+ break;
+
+ for (cp = "0123456789abcdef"; *cp; cp++) {
+ *pty = *cp;
+ master = open(line, O_RDWR);
+ if (master >= 0) {
+ char *tp = &line[strlen("/dev/")];
+
+ /* verify slave side is usable */
+ *tp = 't';
+ err = access(line, R_OK | W_OK);
+ *tp = 'p';
+ if (!err)
+ return master;
+ close(master);
+ }
+ }
+ }
+
+ printk(UM_KERN_ERR "getmaster - no usable host pty devices\n");
+ return -ENOENT;
+}
+
+static int pty_open(int input, int output, int primary, void *d,
+ char **dev_out)
+{
+ struct pty_chan *data = d;
+ int fd, err;
+ char dev[sizeof("/dev/ptyxx\0")] = "/dev/ptyxx";
+
+ fd = getmaster(dev);
+ if (fd < 0)
+ return fd;
+
+ if (data->raw) {
+ err = raw(fd);
+ if (err) {
+ close(fd);
+ return err;
+ }
+ }
+
+ if (data->announce)
+ (*data->announce)(dev, data->dev);
+
+ sprintf(data->dev_name, "%s", dev);
+ *dev_out = data->dev_name;
+
+ return fd;
+}
+
+const struct chan_ops pty_ops = {
+ .type = "pty",
+ .init = pty_chan_init,
+ .open = pty_open,
+ .close = generic_close,
+ .read = generic_read,
+ .write = generic_write,
+ .console_write = generic_console_write,
+ .window_size = generic_window_size,
+ .free = generic_free,
+ .winch = 0,
+};
+
+const struct chan_ops pts_ops = {
+ .type = "pts",
+ .init = pty_chan_init,
+ .open = pts_open,
+ .close = generic_close,
+ .read = generic_read,
+ .write = generic_write,
+ .console_write = generic_console_write,
+ .window_size = generic_window_size,
+ .free = generic_free,
+ .winch = 0,
+};