2 * Copyright (c) 2010 Werner Fink, Jiri Slaby
7 #include <linux/console.h>
8 #include <linux/kernel.h>
9 #include <linux/proc_fs.h>
10 #include <linux/seq_file.h>
11 #include <linux/tty_driver.h>
14 * This is handler for /proc/consoles
16 static int show_console_dev(struct seq_file *m, void *v)
25 { CON_PRINTBUFFER, 'p' },
29 char flags[ARRAY_SIZE(con_flags) + 1];
30 struct console *con = v;
36 const struct tty_driver *driver;
38 driver = con->device(con, &index);
40 dev = MKDEV(driver->major, driver->minor_start);
45 for (a = 0; a < ARRAY_SIZE(con_flags); a++)
46 flags[a] = (con->flags & con_flags[a].flag) ?
47 con_flags[a].name : ' ';
50 seq_printf(m, "%s%d%n", con->name, con->index, &len);
54 seq_printf(m, "%*c%c%c%c (%s)", len, ' ', con->read ? 'R' : '-',
55 con->write ? 'W' : '-', con->unblank ? 'U' : '-',
58 seq_printf(m, " %4d:%d", MAJOR(dev), MINOR(dev));
65 static void *c_start(struct seq_file *m, loff_t *pos)
78 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
80 struct console *con = v;
85 static void c_stop(struct seq_file *m, void *v)
90 static const struct seq_operations consoles_op = {
94 .show = show_console_dev
97 static int consoles_open(struct inode *inode, struct file *file)
99 return seq_open(file, &consoles_op);
102 static const struct file_operations proc_consoles_operations = {
103 .open = consoles_open,
106 .release = seq_release,
109 static int __init proc_consoles_init(void)
111 proc_create("consoles", 0, NULL, &proc_consoles_operations);
114 module_init(proc_consoles_init);