---

yaml
---
r: 213772
b: refs/heads/master
c: 6c2754c
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ab34c02afeafd047a831e6fe2a4dd875ce86bee0
+refs/heads/master: 6c2754c28f2388a276fe21edde826f2113c8f60e

trunk/Documentation/filesystems/proc.txt

@@ -1075,7 +1075,6 @@ Table 1-11: Files in /proc/tty
  drivers       list of drivers and their usage                
  ldiscs        registered line disciplines                    
  driver/serial usage statistic and status of single tty lines 
- consoles      registered system console lines
 ..............................................................................
 
 To see  which  tty's  are  currently in use, you can simply look into the file
@@ -1094,37 +1093,6 @@ To see  which  tty's  are  currently in use, you can simply look into the file
   /dev/tty             /dev/tty        5       0 system:/dev/tty 
   unknown              /dev/tty        4    1-63 console 
 
-To see which character device lines are currently used for the system console
-/dev/console, you may simply look into the file /proc/tty/consoles:
-
-  > cat /proc/tty/consoles
-  tty0                 -WU (ECp)       4:7
-  ttyS0                -W- (Ep)        4:64
-
-The columns are:
-
-  device               name of the device
-  operations           R = can do read operations
-                       W = can do write operations
-                       U = can do unblank
-  flags                E = it is enabled
-                       C = it is prefered console
-                       B = it is primary boot console
-                       p = it is used for printk buffer
-                       b = it is not a TTY but a Braille device
-                       a = it is safe to use when cpu is offline
-                       * = it is standard input of the reading process
-  major:minor          major and minor number of the device separated by a colon
-
-If the reading process holds /dev/console open at the regular standard input
-stream the active device will be marked by an asterisk:
-
-  > cat /proc/tty/consoles < /dev/console
-  tty0                 -WU (ECp*)      4:7
-  ttyS0                -W- (Ep)        4:64
-  > tty
-  /dev/pts/3
-
 
 1.8 Miscellaneous kernel statistics in /proc/stat
 -------------------------------------------------

trunk/fs/proc/proc_tty.c

@@ -12,10 +12,7 @@
 #include <linux/proc_fs.h>
 #include <linux/stat.h>
 #include <linux/tty.h>
-#include <linux/tty_driver.h>
-#include <linux/console.h>
 #include <linux/seq_file.h>
-#include <linux/fdtable.h>
 #include <linux/bitops.h>
 
 /*
@@ -139,160 +136,6 @@ static const struct file_operations proc_tty_drivers_operations = {
 	.release	= seq_release,
 };
 
-/*
- * The device ID of file descriptor 0 of the current reading
- * task if a character device...
- */
-static dev_t current_dev;
-
-/*
- * This is the handler for /proc/tty/consoles
- */
-static int show_console_dev(struct seq_file *m, void *v)
-{
-	const struct tty_driver *driver;
-	struct console *con;
-	int index, len;
-	char flags[10];
-	dev_t dev;
-
-	if (v == SEQ_START_TOKEN)
-		return 0;
-	con = (struct console *)v;
-	if (!con)
-		return 0;
-	driver = con->device(con, &index);
-	if (!driver)
-		return 0;
-	dev = MKDEV(driver->major, driver->minor_start) + index;
-
-	index = 0;
-	if (con->flags & CON_ENABLED)
-		flags[index++] = 'E';
-	if (con->flags & CON_CONSDEV)
-		flags[index++] = 'C';
-	if (con->flags & CON_BOOT)
-		flags[index++] = 'B';
-	if (con->flags & CON_PRINTBUFFER)
-		flags[index++] = 'p';
-	if (con->flags & CON_BRL)
-		flags[index++] = 'b';
-	if (con->flags & CON_ANYTIME)
-		flags[index++] = 'a';
-	if (current_dev == dev)
-		flags[index++] = '*';
-	flags[index] = 0;
-
-	seq_printf(m, "%s%d%n", con->name, con->index, &len);
-	len = 21 - len;
-	if (len < 1)
-		len = 1;
-	seq_printf(m, "%*c", len, ' ');
-	seq_printf(m, "%c%c%c (%s)%n", con->read ? 'R' : '-',
-			con->write ? 'W' : '-', con->unblank ? 'U' : '-',
-			flags, &len);
-	len = 13 - len;
-	if (len < 1)
-		len = 1;
-	seq_printf(m, "%*c%4d:%d\n", len, ' ', MAJOR(dev), MINOR(dev));
-
-	return 0;
-}
-
-/* iterator for consoles */
-static void *c_start(struct seq_file *m, loff_t *pos)
-{
-	struct console *con;
-	loff_t off = 0;
-
-	if (*pos == 0)
-		return SEQ_START_TOKEN;
-
-	acquire_console_sem();
-	for (con = console_drivers; con; con = con->next) {
-		if (!con->device)
-			continue;
-		if (++off == *pos)
-			break;
-	}
-	release_console_sem();
-
-	return con;
-}
-
-static void *c_next(struct seq_file *m, void *v, loff_t *pos)
-{
-	struct console *con;
-
-	acquire_console_sem();
-	if (v == SEQ_START_TOKEN)
-		con = console_drivers;
-	else
-		con = ((struct console *)v)->next;
-	for (; con; con = con->next) {
-		if (!con->device)
-			continue;
-		++*pos;
-		break;
-	}
-	release_console_sem();
-
-	return con;
-}
-
-static void c_stop(struct seq_file *m, void *v)
-{
-}
-
-static const struct seq_operations tty_consoles_op = {
-	.start	= c_start,
-	.next	= c_next,
-	.stop	= c_stop,
-	.show	= show_console_dev
-};
-
-/*
- * Used for open /proc/tty/consoles. Before this detect
- * the device ID of file descriptor 0 of the current
- * reading task if a character device...
- */
-static int tty_consoles_open(struct inode *inode, struct file *file)
-{
-	struct files_struct *curfiles;
-
-	current_dev = 0;
-	curfiles = get_files_struct(current);
-	if (curfiles) {
-		const struct file *curfp;
-		spin_lock(&curfiles->file_lock);
-		curfp = fcheck_files(curfiles, 0);
-		if (curfp && curfp->private_data) {
-			const struct inode *inode;
-			dget(curfp->f_dentry);
-			inode = curfp->f_dentry->d_inode;
-			if (S_ISCHR(inode->i_mode)) {
-				struct tty_struct *tty;
-				tty = (struct tty_struct *)curfp->private_data;
-				if (tty && tty->magic == TTY_MAGIC) {
-					tty = tty_pair_get_tty(tty);
-					current_dev = tty_devnum(tty);
-				}
-			}
-			dput(curfp->f_dentry);
-		}
-		spin_unlock(&curfiles->file_lock);
-		put_files_struct(curfiles);
-	}
-	return seq_open(file, &tty_consoles_op);
-}
-
-static const struct file_operations proc_tty_consoles_operations = {
-	.open		= tty_consoles_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>
@@ -343,5 +186,4 @@ void __init proc_tty_init(void)
 	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);
-	proc_create("tty/consoles", 0, NULL, &proc_tty_consoles_operations);
 }