Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/um/drivers/pty.c b/arch/um/drivers/pty.c
new file mode 100644
index 0000000..ed84d01
--- /dev/null
+++ b/arch/um/drivers/pty.c
@@ -0,0 +1,162 @@
+/*
+ * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
+ * Licensed under the GPL
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <termios.h>
+#include "chan_user.h"
+#include "user.h"
+#include "user_util.h"
+#include "kern_util.h"
+#include "os.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, struct chan_opts *opts)
+{
+ struct pty_chan *data;
+
+ data = um_kmalloc(sizeof(*data));
+ 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){
+ printk("open_pts : Failed to open pts\n");
+ return(-errno);
+ }
+ if(data->raw){
+ CATCH_EINTR(err = tcgetattr(fd, &data->tt));
+ if(err)
+ return(err);
+
+ err = raw(fd);
+ if(err)
+ return(err);
+ }
+
+ dev = ptsname(fd);
+ sprintf(data->dev_name, "%s", dev);
+ *dev_out = data->dev_name;
+ if (data->announce)
+ (*data->announce)(dev, data->dev);
+ return(fd);
+}
+
+static int getmaster(char *line)
+{
+ char *pty, *bank, *cp;
+ int master, err;
+
+ pty = &line[strlen("/dev/ptyp")];
+ for (bank = "pqrs"; *bank; bank++) {
+ line[strlen("/dev/pty")] = *bank;
+ *pty = '0';
+ if (os_stat_file(line, NULL) < 0)
+ break;
+ for (cp = "0123456789abcdef"; *cp; cp++) {
+ *pty = *cp;
+ master = os_open_file(line, of_rdwr(OPENFLAGS()), 0);
+ if (master >= 0) {
+ char *tp = &line[strlen("/dev/")];
+
+ /* verify slave side is usable */
+ *tp = 't';
+ err = os_access(line, OS_ACC_RW_OK);
+ *tp = 'p';
+ if(err == 0) return(master);
+ (void) os_close_file(master);
+ }
+ }
+ }
+ return(-1);
+}
+
+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(-errno);
+
+ if(data->raw){
+ err = raw(fd);
+ if(err)
+ return(err);
+ }
+
+ if(data->announce) (*data->announce)(dev, data->dev);
+
+ sprintf(data->dev_name, "%s", dev);
+ *dev_out = data->dev_name;
+ return(fd);
+}
+
+static int pty_console_write(int fd, const char *buf, int n, void *d)
+{
+ struct pty_chan *data = d;
+
+ return(generic_console_write(fd, buf, n, &data->tt));
+}
+
+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 = pty_console_write,
+ .window_size = generic_window_size,
+ .free = generic_free,
+ .winch = 0,
+};
+
+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 = pty_console_write,
+ .window_size = generic_window_size,
+ .free = generic_free,
+ .winch = 0,
+};
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only. This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */