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;
35 const struct tty_driver *driver;
37 driver = con->device(con, &index);
39 dev = MKDEV(driver->major, driver->minor_start);
44 for (a = 0; a < ARRAY_SIZE(con_flags); a++)
45 flags[a] = (con->flags & con_flags[a].flag) ?
46 con_flags[a].name : ' ';
49 seq_setwidth(m, 21 - 1);
50 seq_printf(m, "%s%d", con->name, con->index);
52 seq_printf(m, "%c%c%c (%s)", con->read ? 'R' : '-',
53 con->write ? 'W' : '-', con->unblank ? 'U' : '-',
56 seq_printf(m, " %4d:%d", MAJOR(dev), MINOR(dev));
63 static void *c_start(struct seq_file *m, loff_t *pos)
76 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
78 struct console *con = v;
83 static void c_stop(struct seq_file *m, void *v)
88 static const struct seq_operations consoles_op = {
92 .show = show_console_dev
95 static int consoles_open(struct inode *inode, struct file *file)
97 return seq_open(file, &consoles_op);
100 static const struct file_operations proc_consoles_operations = {
101 .open = consoles_open,
104 .release = seq_release,
107 static int __init proc_consoles_init(void)
109 proc_create("consoles", 0, NULL, &proc_consoles_operations);
112 fs_initcall(proc_consoles_init);