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 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 int pts_open(int input, int output, int primary, void *d, char **dev_out)
39 struct pty_chan *data = d;
45 printk("open_pts : Failed to open pts\n");
49 CATCH_EINTR(err = tcgetattr(fd, &data->tt));
59 sprintf(data->dev_name, "%s", dev);
60 *dev_out = data->dev_name;
62 (*data->announce)(dev, data->dev);
66 int getmaster(char *line)
68 char *pty, *bank, *cp;
71 pty = &line[strlen("/dev/ptyp")];
72 for (bank = "pqrs"; *bank; bank++) {
73 line[strlen("/dev/pty")] = *bank;
75 if (os_stat_file(line, NULL) < 0)
77 for (cp = "0123456789abcdef"; *cp; cp++) {
79 master = os_open_file(line, of_rdwr(OPENFLAGS()), 0);
81 char *tp = &line[strlen("/dev/")];
83 /* verify slave side is usable */
85 err = os_access(line, OS_ACC_RW_OK);
87 if(err == 0) return(master);
88 (void) os_close_file(master);
95 int pty_open(int input, int output, int primary, void *d, char **dev_out)
97 struct pty_chan *data = d;
99 char dev[sizeof("/dev/ptyxx\0")] = "/dev/ptyxx";
111 if(data->announce) (*data->announce)(dev, data->dev);
113 sprintf(data->dev_name, "%s", dev);
114 *dev_out = data->dev_name;
118 int pty_console_write(int fd, const char *buf, int n, void *d)
120 struct pty_chan *data = d;
122 return(generic_console_write(fd, buf, n, &data->tt));
125 struct chan_ops pty_ops = {
127 .init = pty_chan_init,
129 .close = generic_close,
130 .read = generic_read,
131 .write = generic_write,
132 .console_write = pty_console_write,
133 .window_size = generic_window_size,
134 .free = generic_free,
138 struct chan_ops pts_ops = {
140 .init = pty_chan_init,
142 .close = generic_close,
143 .read = generic_read,
144 .write = generic_write,
145 .console_write = pty_console_write,
146 .window_size = generic_window_size,
147 .free = generic_free,
152 * Overrides for Emacs so that we follow Linus's tabbing style.
153 * Emacs will notice this stuff at the end of the file and automatically
154 * adjust the settings for this buffer only. This must remain at the end
156 * ---------------------------------------------------------------------------
158 * c-file-style: "linux"