Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 162 insertions, 0 deletions

diff --git a/arch/um/drivers/pty.c b/arch/um/drivers/pty.c
new file mode 100644
index 000000000000..ed84d01df6cc
--- /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:
+ */