diff options
Diffstat (limited to 'ANDROID_3.4.5/fs/proc/proc_tty.c')
| -rw-r--r-- | ANDROID_3.4.5/fs/proc/proc_tty.c | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/ANDROID_3.4.5/fs/proc/proc_tty.c b/ANDROID_3.4.5/fs/proc/proc_tty.c deleted file mode 100644 index cb761f01..00000000 --- a/ANDROID_3.4.5/fs/proc/proc_tty.c +++ /dev/null @@ -1,189 +0,0 @@ -/* - * proc_tty.c -- handles /proc/tty - * - * Copyright 1997, Theodore Ts'o - */ - -#include <asm/uaccess.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/errno.h> -#include <linux/time.h> -#include <linux/proc_fs.h> -#include <linux/stat.h> -#include <linux/tty.h> -#include <linux/seq_file.h> -#include <linux/bitops.h> - -/* - * The /proc/tty directory inodes... - */ -static struct proc_dir_entry *proc_tty_ldisc, *proc_tty_driver; - -/* - * This is the handler for /proc/tty/drivers - */ -static void show_tty_range(struct seq_file *m, struct tty_driver *p, - dev_t from, int num) -{ - seq_printf(m, "%-20s ", p->driver_name ? p->driver_name : "unknown"); - seq_printf(m, "/dev/%-8s ", p->name); - if (p->num > 1) { - seq_printf(m, "%3d %d-%d ", MAJOR(from), MINOR(from), - MINOR(from) + num - 1); - } else { - seq_printf(m, "%3d %7d ", MAJOR(from), MINOR(from)); - } - switch (p->type) { - case TTY_DRIVER_TYPE_SYSTEM: - seq_puts(m, "system"); - if (p->subtype == SYSTEM_TYPE_TTY) - seq_puts(m, ":/dev/tty"); - else if (p->subtype == SYSTEM_TYPE_SYSCONS) - seq_puts(m, ":console"); - else if (p->subtype == SYSTEM_TYPE_CONSOLE) - seq_puts(m, ":vtmaster"); - break; - case TTY_DRIVER_TYPE_CONSOLE: - seq_puts(m, "console"); - break; - case TTY_DRIVER_TYPE_SERIAL: - seq_puts(m, "serial"); - break; - case TTY_DRIVER_TYPE_PTY: - if (p->subtype == PTY_TYPE_MASTER) - seq_puts(m, "pty:master"); - else if (p->subtype == PTY_TYPE_SLAVE) - seq_puts(m, "pty:slave"); - else - seq_puts(m, "pty"); - break; - default: - seq_printf(m, "type:%d.%d", p->type, p->subtype); - } - seq_putc(m, '\n'); -} - -static int show_tty_driver(struct seq_file *m, void *v) -{ - struct tty_driver *p = list_entry(v, struct tty_driver, tty_drivers); - dev_t from = MKDEV(p->major, p->minor_start); - dev_t to = from + p->num; - - if (&p->tty_drivers == tty_drivers.next) { - /* pseudo-drivers first */ - seq_printf(m, "%-20s /dev/%-8s ", "/dev/tty", "tty"); - seq_printf(m, "%3d %7d ", TTYAUX_MAJOR, 0); - seq_puts(m, "system:/dev/tty\n"); - seq_printf(m, "%-20s /dev/%-8s ", "/dev/console", "console"); - seq_printf(m, "%3d %7d ", TTYAUX_MAJOR, 1); - seq_puts(m, "system:console\n"); -#ifdef CONFIG_UNIX98_PTYS - seq_printf(m, "%-20s /dev/%-8s ", "/dev/ptmx", "ptmx"); - seq_printf(m, "%3d %7d ", TTYAUX_MAJOR, 2); - seq_puts(m, "system\n"); -#endif -#ifdef CONFIG_VT - seq_printf(m, "%-20s /dev/%-8s ", "/dev/vc/0", "vc/0"); - seq_printf(m, "%3d %7d ", TTY_MAJOR, 0); - seq_puts(m, "system:vtmaster\n"); -#endif - } - - while (MAJOR(from) < MAJOR(to)) { - dev_t next = MKDEV(MAJOR(from)+1, 0); - show_tty_range(m, p, from, next - from); - from = next; - } - if (from != to) - show_tty_range(m, p, from, to - from); - return 0; -} - -/* iterator */ -static void *t_start(struct seq_file *m, loff_t *pos) -{ - mutex_lock(&tty_mutex); - return seq_list_start(&tty_drivers, *pos); -} - -static void *t_next(struct seq_file *m, void *v, loff_t *pos) -{ - return seq_list_next(v, &tty_drivers, pos); -} - -static void t_stop(struct seq_file *m, void *v) -{ - mutex_unlock(&tty_mutex); -} - -static const struct seq_operations tty_drivers_op = { - .start = t_start, - .next = t_next, - .stop = t_stop, - .show = show_tty_driver -}; - -static int tty_drivers_open(struct inode *inode, struct file *file) -{ - return seq_open(file, &tty_drivers_op); -} - -static const struct file_operations proc_tty_drivers_operations = { - .open = tty_drivers_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release, -}; - -/* - * This function is called by tty_register_driver() to handle - * registering the driver's /proc handler into /proc/tty/driver/<foo> - */ -void proc_tty_register_driver(struct tty_driver *driver) -{ - struct proc_dir_entry *ent; - - if (!driver->driver_name || driver->proc_entry || - !driver->ops->proc_fops) - return; - - ent = proc_create_data(driver->driver_name, 0, proc_tty_driver, - driver->ops->proc_fops, driver); - driver->proc_entry = ent; -} - -/* - * This function is called by tty_unregister_driver() - */ -void proc_tty_unregister_driver(struct tty_driver *driver) -{ - struct proc_dir_entry *ent; - - ent = driver->proc_entry; - if (!ent) - return; - - remove_proc_entry(driver->driver_name, proc_tty_driver); - - driver->proc_entry = NULL; -} - -/* - * Called by proc_root_init() to initialize the /proc/tty subtree - */ -void __init proc_tty_init(void) -{ - if (!proc_mkdir("tty", NULL)) - return; - proc_tty_ldisc = proc_mkdir("tty/ldisc", NULL); - /* - * /proc/tty/driver/serial reveals the exact character counts for - * serial links which is just too easy to abuse for inferring - * password lengths and inter-keystroke timings during password - * entry. - */ - proc_tty_driver = proc_mkdir_mode("tty/driver", S_IRUSR|S_IXUSR, NULL); - proc_create("tty/ldiscs", 0, NULL, &tty_ldiscs_proc_fops); - proc_create("tty/drivers", 0, NULL, &proc_tty_drivers_operations); -} |