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// tty tapset
// Copyright (C) 2009 IBM Corp.
// Copyright (C) 2010 Red Hat Inc.
//
// Author: Breno Leitao <[email protected]>
//
// This file is part of systemtap, and is free software. You can
// redistribute it and/or modify it under the terms of the GNU General
// Public License (GPL); either version 2, or (at your option) any
// later version.
/**
* probe tty.open - Called when a tty is opened
* @inode_number: the inode number
* @inode_state: the inode state
* @inode_flags: the inode flags
* @file_name: the file name
* @file_mode: the file mode
* @file_flags: the file flags
*/
probe tty.open = kernel.function("tty_open")
{
inode_number = $inode->i_ino
inode_state = $inode->i_state
inode_flags = $inode->i_flags
file_name = d_name(@choose_defined($filp->f_path->dentry,
$filp->f_dentry))
file_mode = $filp->f_mode
file_flags = $filp->f_flags
}
/**
* probe tty.release - Called when the tty is closed
* @inode_number: the inode number
* @inode_state: the inode state
* @inode_flags: the inode flags
* @file_name: the file name
* @file_mode: the file mode
* @file_flags: the file flags
*/
probe tty.release = kernel.function("tty_release")
{
// RHEL4 (2.6.9) kernel's debuginfo doesn't seem to have
// $inode, even though the function isn't inline. So, make
// sure $inode is defined.
if (@defined($inode)) {
inode_number = $inode->i_ino
inode_state = $inode->i_state
inode_flags = $inode->i_flags
}
else {
inode_number = -1
inode_state = -1
inode_flags = -1
}
file_name = d_name(@choose_defined($filp->f_path->dentry,
$filp->f_dentry))
file_mode = $filp->f_mode
file_flags = $filp->f_flags
}
/**
* probe tty.resize - Called when a terminal resize happens
* @name: the tty name
* @old_row: the old row value
* @old_col: the old col value
* @old_ypixel: the old ypixel
* @old_xpixel: the old xpixel
* @new_row: the new row value
* @new_col: the new col value
* @new_ypixel: the new ypixel value
* @new_xpixel: the new xpixel value
*/
probe tty.resize = kernel.function("tiocswinsz")
{
%(systemtap_v < "2.8" %?
name = kernel_string($tty->name)
%:
name = kernel_string_quoted($tty->name)
%)
old_row = $tty->winsize->ws_row
old_col = $tty->winsize->ws_col
old_ypixel = $tty->winsize->ws_ypixel
old_xpixel = $tty->winsize->ws_xpixel
if (@defined($arg)) {
new_row = user_ushort($arg->ws_row)
new_col = user_ushort($arg->ws_col)
new_ypixel = user_ushort($arg->ws_ypixel)
new_xpixel = user_ushort($arg->ws_xpixel)
}
else {
new_row = -1
new_col = -1
new_ypixel = -1
new_xpixel = -1
}
}
/**
* probe tty.ioctl - called when a ioctl is request to the tty
* @name: the file name
* @cmd: the ioctl command
* @arg: the ioctl argument
*/
probe tty.ioctl = kernel.function("tty_ioctl")
{
%(systemtap_v < "2.8" %?
name = kernel_string(@choose_defined($file->f_path->dentry->d_iname,
$file->f_dentry->d_iname))
%:
name = kernel_string_quoted(@choose_defined($file->f_path->dentry->d_iname,
$file->f_dentry->d_iname))
%)
cmd = $cmd
arg = $arg
}
/**
* probe tty.init - Called when a tty is being initalized
* @driver_name: the driver name
* @name: the driver .dev_name name
* @module: the module name
*/
probe tty.init = kernel.function("tty_init_dev") !,
kernel.function("init_dev")
{
%(systemtap_v < "2.8" %?
driver_name = kernel_string($driver->driver_name)
name = kernel_string($driver->name)
module = kernel_string($driver->owner->name)
%:
driver_name = kernel_string_quoted($driver->driver_name)
name = kernel_string_quoted($driver->name)
module = kernel_string_quoted($driver->owner->name)
%)
}
/**
* probe tty.register - Called when a tty device is registred
* @driver_name: the driver name
* @name: the driver .dev_name name
* @module: the module name
* @index: the tty index requested
*/
probe tty.register = kernel.function("tty_register_device")
{
%(systemtap_v < "2.8" %?
driver_name = kernel_string($driver->driver_name)
name = kernel_string($driver->name)
module = kernel_string($driver->owner->name)
%:
driver_name = kernel_string_quoted($driver->driver_name)
name = kernel_string_quoted($driver->name)
module = kernel_string_quoted($driver->owner->name)
%)
index = $index
}
/**
* probe tty.unregister - Called when a tty device is being unregistered
* @driver_name: the driver name
* @name: the driver .dev_name name
* @module: the module name
* @index: the tty index requested
*/
probe tty.unregister = kernel.function("tty_unregister_device")
{
%(systemtap_v < "2.8" %?
driver_name = kernel_string($driver->driver_name)
name = kernel_string($driver->name)
module = kernel_string($driver->owner->name)
%:
driver_name = kernel_string_quoted($driver->driver_name)
name = kernel_string_quoted($driver->name)
module = kernel_string_quoted($driver->owner->name)
%)
index = $index
}
/**
* probe tty.poll - Called when a tty device is being polled
* @file_name: the tty file name
* @wait_key: the wait queue key
*/
probe tty.poll = kernel.function("tty_poll")
{
file_name = d_name(@choose_defined($filp->f_path->dentry,
$filp->f_dentry))
wait_key = (@defined($wait->key) ? ($wait ? $wait->key : 0) : 0)
}
/**
* probe tty.receive - called when a tty receives a message
* @cp: the buffer that was received
* @fp: The flag buffer
* @count: The amount of characters received
* @driver_name: the driver name
* @name: the name of the module file
* @index: The tty Index
* @id: the tty id
*/
probe tty.receive = kernel.function("n_tty_receive_buf")
{
%(systemtap_v < "2.8" %?
cp = kernel_string($cp)
fp = kernel_string($fp)
%:
cp = kernel_string_quoted($cp)
fp = kernel_string_quoted($fp)
%)
count = $count
%(systemtap_v < "2.8" %?
driver_name = kernel_string($tty->driver->driver_name)
name = kernel_string($tty->driver->name)
%:
driver_name = kernel_string_quoted($tty->driver->driver_name)
name = kernel_string_quoted($tty->driver->name)
%)
index = $tty->index
id = $tty->magic
}
/**
* probe tty.write - write to the tty line
* @buffer: the buffer that will be written
* @nr: The amount of characters
* @driver_name: the driver name
* @file_name: the file name lreated to the tty
*/
probe tty.write = kernel.function("n_tty_write") !,
kernel.function("write_chan")
{
%(systemtap_v < "2.8" %?
buffer = kernel_string($buf)
%:
buffer = kernel_buffer_quoted($buf, $nr, 0)
%)
nr = $nr
file_name = d_name(@choose_defined($file->f_path->dentry,
$file->f_dentry))
%(systemtap_v < "2.8" %?
driver_name = kernel_string($tty->driver->driver_name)
%:
driver_name = kernel_string_quoted($tty->driver->driver_name)
%)
}
/**
* probe tty.read - called when a tty line will be read
* @buffer: the buffer that will receive the characters
* @nr: The amount of characters to be read
* @driver_name: the driver name
* @file_name: the file name lreated to the tty
*/
probe tty.read = kernel.function("n_tty_read") !,
kernel.function("read_chan")
{
%(systemtap_v < "2.8" %?
buffer = kernel_string($buf)
%:
buffer = kernel_buffer_quoted($buf, $nr, 0)
%)
nr = $nr
file_name = d_name(@choose_defined($file->f_path->dentry,
$file->f_dentry))
%(systemtap_v < "2.8" %?
driver_name = kernel_string($tty->driver->driver_name)
%:
driver_name = kernel_string_quoted($tty->driver->driver_name)
%)
}