2 * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
11 #include "chan_user.h"
13 #include "user_util.h"
14 #include "kern_util.h"
18 void (*announce)(char *dev_name, int dev);
22 char dev_name[sizeof("/dev/pts/0123456\0")];
25 static void *pty_chan_init(char *str, int device, struct chan_opts *opts)
27 struct pty_chan *data;
29 data = um_kmalloc(sizeof(*data));
30 if(data == NULL) return(NULL);
31 *data = ((struct pty_chan) { .announce = opts->announce,
37 static int pts_open(int input, int output, int primary, void *d,
40 struct pty_chan *data = d;
46 printk("open_pts : Failed to open pts\n");
50 CATCH_EINTR(err = tcgetattr(fd, &data->tt));
60 sprintf(data->dev_name, "%s", dev);
61 *dev_out = data->dev_name;
63 (*data->announce)(dev, data->dev);
67 static int getmaster(char *line)
69 char *pty, *bank, *cp;
72 pty = &line[strlen("/dev/ptyp")];
73 for (bank = "pqrs"; *bank; bank++) {
74 line[strlen("/dev/pty")] = *bank;
76 if (os_stat_file(line, NULL) < 0)
78 for (cp = "0123456789abcdef"; *cp; cp++) {
80 master = os_open_file(line, of_rdwr(OPENFLAGS()), 0);
82 char *tp = &line[strlen("/dev/")];
84 /* verify slave side is usable */
86 err = os_access(line, OS_ACC_RW_OK);
88 if(err == 0) return(master);
89 (void) os_close_file(master);
96 static int pty_open(int input, int output, int primary, void *d,
99 struct pty_chan *data = d;
101 char dev[sizeof("/dev/ptyxx\0")] = "/dev/ptyxx";
113 if(data->announce) (*data->announce)(dev, data->dev);
115 sprintf(data->dev_name, "%s", dev);
116 *dev_out = data->dev_name;
120 static int pty_console_write(int fd, const char *buf, int n, void *d)
122 struct pty_chan *data = d;
124 return(generic_console_write(fd, buf, n, &data->tt));
127 struct chan_ops pty_ops = {
129 .init = pty_chan_init,
131 .close = generic_close,
132 .read = generic_read,
133 .write = generic_write,
134 .console_write = pty_console_write,
135 .window_size = generic_window_size,
136 .free = generic_free,
140 struct chan_ops pts_ops = {
142 .init = pty_chan_init,
144 .close = generic_close,
145 .read = generic_read,
146 .write = generic_write,
147 .console_write = pty_console_write,
148 .window_size = generic_window_size,
149 .free = generic_free,
154 * Overrides for Emacs so that we follow Linus's tabbing style.
155 * Emacs will notice this stuff at the end of the file and automatically
156 * adjust the settings for this buffer only. This must remain at the end
158 * ---------------------------------------------------------------------------
160 * c-file-style: "linux"