2 * Copyright (C) 2001 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
3 * Licensed under the GPL
14 #include "chan_user.h"
17 #include "kern_constants.h"
18 #include "um_malloc.h"
21 void (*announce
)(char *dev_name
, int dev
);
25 char dev_name
[sizeof("/dev/pts/0123456\0")];
28 static void *pty_chan_init(char *str
, int device
, const struct chan_opts
*opts
)
30 struct pty_chan
*data
;
32 data
= kmalloc(sizeof(*data
), UM_GFP_KERNEL
);
36 *data
= ((struct pty_chan
) { .announce
= opts
->announce
,
42 static int pts_open(int input
, int output
, int primary
, void *d
,
45 struct pty_chan
*data
= d
;
52 printk(UM_KERN_ERR
"open_pts : Failed to open pts\n");
57 CATCH_EINTR(err
= tcgetattr(fd
, &data
->tt
));
67 sprintf(data
->dev_name
, "%s", dev
);
68 *dev_out
= data
->dev_name
;
71 (*data
->announce
)(dev
, data
->dev
);
76 static int getmaster(char *line
)
79 char *pty
, *bank
, *cp
;
82 pty
= &line
[strlen("/dev/ptyp")];
83 for (bank
= "pqrs"; *bank
; bank
++) {
84 line
[strlen("/dev/pty")] = *bank
;
86 /* Did we hit the end ? */
87 if ((stat(line
, &buf
) < 0) && (errno
== ENOENT
))
90 for (cp
= "0123456789abcdef"; *cp
; cp
++) {
92 master
= open(line
, O_RDWR
);
94 char *tp
= &line
[strlen("/dev/")];
96 /* verify slave side is usable */
98 err
= access(line
, R_OK
| W_OK
);
107 printk(UM_KERN_ERR
"getmaster - no usable host pty devices\n");
111 static int pty_open(int input
, int output
, int primary
, void *d
,
114 struct pty_chan
*data
= d
;
116 char dev
[sizeof("/dev/ptyxx\0")] = "/dev/ptyxx";
129 (*data
->announce
)(dev
, data
->dev
);
131 sprintf(data
->dev_name
, "%s", dev
);
132 *dev_out
= data
->dev_name
;
137 const struct chan_ops pty_ops
= {
139 .init
= pty_chan_init
,
141 .close
= generic_close
,
142 .read
= generic_read
,
143 .write
= generic_write
,
144 .console_write
= generic_console_write
,
145 .window_size
= generic_window_size
,
146 .free
= generic_free
,
150 const struct chan_ops pts_ops
= {
152 .init
= pty_chan_init
,
154 .close
= generic_close
,
155 .read
= generic_read
,
156 .write
= generic_write
,
157 .console_write
= generic_console_write
,
158 .window_size
= generic_window_size
,
159 .free
= generic_free
,
This page took 0.035252 seconds and 6 git commands to generate.