diff options
Diffstat (limited to 'drivers/staging/dgrp/dgrp_ports_ops.c')
| -rw-r--r-- | drivers/staging/dgrp/dgrp_ports_ops.c | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/drivers/staging/dgrp/dgrp_ports_ops.c b/drivers/staging/dgrp/dgrp_ports_ops.c deleted file mode 100644 index 4ce0308..0000000 --- a/drivers/staging/dgrp/dgrp_ports_ops.c +++ /dev/null @@ -1,156 +0,0 @@ -/* - * - * Copyright 1999-2000 Digi International (www.digi.com) - * James Puzzo <jamesp at digi dot com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the - * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR - * PURPOSE. See the GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ - -/* - * - * Filename: - * - * dgrp_ports_ops.c - * - * Description: - * - * Handle the file operations required for the /proc/dgrp/ports/... - * devices. Basically gathers tty status for the node and returns it. - * - * Author: - * - * James A. Puzzo - * - */ - -#include <linux/module.h> -#include <linux/proc_fs.h> -#include <linux/tty.h> -#include <linux/sched.h> -#include <linux/seq_file.h> - -#include "dgrp_common.h" - -/* File operation declarations */ -static int dgrp_ports_open(struct inode *, struct file *); - -const struct file_operations dgrp_ports_ops = { - .owner = THIS_MODULE, - .open = dgrp_ports_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release -}; - -static void *dgrp_ports_seq_start(struct seq_file *seq, loff_t *pos) -{ - if (*pos == 0) - seq_puts(seq, "#num tty_open pr_open tot_wait MSTAT IFLAG OFLAG CFLAG BPS DIGIFLAGS\n"); - - return pos; -} - -static void *dgrp_ports_seq_next(struct seq_file *seq, void *v, loff_t *pos) -{ - struct nd_struct *nd = seq->private; - - if (*pos >= nd->nd_chan_count) - return NULL; - - *pos += 1; - - return pos; -} - -static void dgrp_ports_seq_stop(struct seq_file *seq, void *v) -{ -} - -static int dgrp_ports_seq_show(struct seq_file *seq, void *v) -{ - loff_t *pos = v; - struct nd_struct *nd; - struct ch_struct *ch; - struct un_struct *tun, *pun; - unsigned int totcnt; - - nd = seq->private; - if (!nd) - return 0; - - if (*pos >= nd->nd_chan_count) - return 0; - - ch = &nd->nd_chan[*pos]; - tun = &ch->ch_tun; - pun = &ch->ch_pun; - - /* - * If port is not open and no one is waiting to - * open it, the modem signal values can't be - * trusted, and will be zeroed. - */ - totcnt = tun->un_open_count + - pun->un_open_count + - ch->ch_wait_count[0] + - ch->ch_wait_count[1] + - ch->ch_wait_count[2]; - - seq_printf(seq, "%02d %02d %02d %02d 0x%04X 0x%04X 0x%04X 0x%04X %-6d 0x%04X\n", - (int) *pos, - tun->un_open_count, - pun->un_open_count, - ch->ch_wait_count[0] + - ch->ch_wait_count[1] + - ch->ch_wait_count[2], - (totcnt ? ch->ch_s_mlast : 0), - ch->ch_s_iflag, - ch->ch_s_oflag, - ch->ch_s_cflag, - (ch->ch_s_brate ? (1843200 / ch->ch_s_brate) : 0), - ch->ch_digi.digi_flags); - - return 0; -} - -static const struct seq_operations ports_seq_ops = { - .start = dgrp_ports_seq_start, - .next = dgrp_ports_seq_next, - .stop = dgrp_ports_seq_stop, - .show = dgrp_ports_seq_show, -}; - -/** - * dgrp_ports_open -- open the /proc/dgrp/ports/... device - * @inode: struct inode * - * @file: struct file * - * - * Open function to open the /proc/dgrp/ports device for a PortServer. - * This is the open function for struct file_operations - */ -static int dgrp_ports_open(struct inode *inode, struct file *file) -{ - struct seq_file *seq; - int rtn; - - rtn = seq_open(file, &ports_seq_ops); - if (!rtn) { - seq = file->private_data; - seq->private = PDE_DATA(inode); - } - - return rtn; -} |