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path: root/drivers/isdn/divert/divert_procfs.c
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Diffstat (limited to 'drivers/isdn/divert/divert_procfs.c')
-rw-r--r--drivers/isdn/divert/divert_procfs.c336
1 files changed, 0 insertions, 336 deletions
diff --git a/drivers/isdn/divert/divert_procfs.c b/drivers/isdn/divert/divert_procfs.c
deleted file mode 100644
index 342585e04fd3..000000000000
--- a/drivers/isdn/divert/divert_procfs.c
+++ /dev/null
@@ -1,336 +0,0 @@
-/* $Id: divert_procfs.c,v 1.11.6.2 2001/09/23 22:24:36 kai Exp $
- *
- * Filesystem handling for the diversion supplementary services.
- *
- * Copyright 1998 by Werner Cornelius (werner@isdn4linux.de)
- *
- * This software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- *
- */
-
-#include <linux/module.h>
-#include <linux/poll.h>
-#include <linux/slab.h>
-#ifdef CONFIG_PROC_FS
-#include <linux/proc_fs.h>
-#else
-#include <linux/fs.h>
-#endif
-#include <linux/sched.h>
-#include <linux/isdnif.h>
-#include <net/net_namespace.h>
-#include <linux/mutex.h>
-#include "isdn_divert.h"
-
-
-/*********************************/
-/* Variables for interface queue */
-/*********************************/
-ulong if_used = 0; /* number of interface users */
-static DEFINE_MUTEX(isdn_divert_mutex);
-static struct divert_info *divert_info_head = NULL; /* head of queue */
-static struct divert_info *divert_info_tail = NULL; /* pointer to last entry */
-static DEFINE_SPINLOCK(divert_info_lock);/* lock for queue */
-static wait_queue_head_t rd_queue;
-
-/*********************************/
-/* put an info buffer into queue */
-/*********************************/
-void
-put_info_buffer(char *cp)
-{
- struct divert_info *ib;
- unsigned long flags;
-
- if (if_used <= 0)
- return;
- if (!cp)
- return;
- if (!*cp)
- return;
- if (!(ib = kmalloc(sizeof(struct divert_info) + strlen(cp), GFP_ATOMIC)))
- return; /* no memory */
- strcpy(ib->info_start, cp); /* set output string */
- ib->next = NULL;
- spin_lock_irqsave(&divert_info_lock, flags);
- ib->usage_cnt = if_used;
- if (!divert_info_head)
- divert_info_head = ib; /* new head */
- else
- divert_info_tail->next = ib; /* follows existing messages */
- divert_info_tail = ib; /* new tail */
-
- /* delete old entrys */
- while (divert_info_head->next) {
- if ((divert_info_head->usage_cnt <= 0) &&
- (divert_info_head->next->usage_cnt <= 0)) {
- ib = divert_info_head;
- divert_info_head = divert_info_head->next;
- kfree(ib);
- } else
- break;
- } /* divert_info_head->next */
- spin_unlock_irqrestore(&divert_info_lock, flags);
- wake_up_interruptible(&(rd_queue));
-} /* put_info_buffer */
-
-#ifdef CONFIG_PROC_FS
-
-/**********************************/
-/* deflection device read routine */
-/**********************************/
-static ssize_t
-isdn_divert_read(struct file *file, char __user *buf, size_t count, loff_t *off)
-{
- struct divert_info *inf;
- int len;
-
- if (!(inf = *((struct divert_info **) file->private_data))) {
- if (file->f_flags & O_NONBLOCK)
- return -EAGAIN;
- wait_event_interruptible(rd_queue, (inf =
- *((struct divert_info **) file->private_data)));
- }
- if (!inf)
- return (0);
-
- inf->usage_cnt--; /* new usage count */
- file->private_data = &inf->next; /* next structure */
- if ((len = strlen(inf->info_start)) <= count) {
- if (copy_to_user(buf, inf->info_start, len))
- return -EFAULT;
- *off += len;
- return (len);
- }
- return (0);
-} /* isdn_divert_read */
-
-/**********************************/
-/* deflection device write routine */
-/**********************************/
-static ssize_t
-isdn_divert_write(struct file *file, const char __user *buf, size_t count, loff_t *off)
-{
- return (-ENODEV);
-} /* isdn_divert_write */
-
-
-/***************************************/
-/* select routines for various kernels */
-/***************************************/
-static __poll_t
-isdn_divert_poll(struct file *file, poll_table *wait)
-{
- __poll_t mask = 0;
-
- poll_wait(file, &(rd_queue), wait);
- /* mask = EPOLLOUT | EPOLLWRNORM; */
- if (*((struct divert_info **) file->private_data)) {
- mask |= EPOLLIN | EPOLLRDNORM;
- }
- return mask;
-} /* isdn_divert_poll */
-
-/****************/
-/* Open routine */
-/****************/
-static int
-isdn_divert_open(struct inode *ino, struct file *filep)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&divert_info_lock, flags);
- if_used++;
- if (divert_info_head)
- filep->private_data = &(divert_info_tail->next);
- else
- filep->private_data = &divert_info_head;
- spin_unlock_irqrestore(&divert_info_lock, flags);
- /* start_divert(); */
- return nonseekable_open(ino, filep);
-} /* isdn_divert_open */
-
-/*******************/
-/* close routine */
-/*******************/
-static int
-isdn_divert_close(struct inode *ino, struct file *filep)
-{
- struct divert_info *inf;
- unsigned long flags;
-
- spin_lock_irqsave(&divert_info_lock, flags);
- if_used--;
- inf = *((struct divert_info **) filep->private_data);
- while (inf) {
- inf->usage_cnt--;
- inf = inf->next;
- }
- if (if_used <= 0)
- while (divert_info_head) {
- inf = divert_info_head;
- divert_info_head = divert_info_head->next;
- kfree(inf);
- }
- spin_unlock_irqrestore(&divert_info_lock, flags);
- return (0);
-} /* isdn_divert_close */
-
-/*********/
-/* IOCTL */
-/*********/
-static int isdn_divert_ioctl_unlocked(struct file *file, uint cmd, ulong arg)
-{
- divert_ioctl dioctl;
- int i;
- unsigned long flags;
- divert_rule *rulep;
- char *cp;
-
- if (copy_from_user(&dioctl, (void __user *) arg, sizeof(dioctl)))
- return -EFAULT;
-
- switch (cmd) {
- case IIOCGETVER:
- dioctl.drv_version = DIVERT_IIOC_VERSION; /* set version */
- break;
-
- case IIOCGETDRV:
- if ((dioctl.getid.drvid = divert_if.name_to_drv(dioctl.getid.drvnam)) < 0)
- return (-EINVAL);
- break;
-
- case IIOCGETNAM:
- cp = divert_if.drv_to_name(dioctl.getid.drvid);
- if (!cp)
- return (-EINVAL);
- if (!*cp)
- return (-EINVAL);
- strcpy(dioctl.getid.drvnam, cp);
- break;
-
- case IIOCGETRULE:
- if (!(rulep = getruleptr(dioctl.getsetrule.ruleidx)))
- return (-EINVAL);
- dioctl.getsetrule.rule = *rulep; /* copy data */
- break;
-
- case IIOCMODRULE:
- if (!(rulep = getruleptr(dioctl.getsetrule.ruleidx)))
- return (-EINVAL);
- spin_lock_irqsave(&divert_lock, flags);
- *rulep = dioctl.getsetrule.rule; /* copy data */
- spin_unlock_irqrestore(&divert_lock, flags);
- return (0); /* no copy required */
- break;
-
- case IIOCINSRULE:
- return (insertrule(dioctl.getsetrule.ruleidx, &dioctl.getsetrule.rule));
- break;
-
- case IIOCDELRULE:
- return (deleterule(dioctl.getsetrule.ruleidx));
- break;
-
- case IIOCDODFACT:
- return (deflect_extern_action(dioctl.fwd_ctrl.subcmd,
- dioctl.fwd_ctrl.callid,
- dioctl.fwd_ctrl.to_nr));
-
- case IIOCDOCFACT:
- case IIOCDOCFDIS:
- case IIOCDOCFINT:
- if (!divert_if.drv_to_name(dioctl.cf_ctrl.drvid))
- return (-EINVAL); /* invalid driver */
- if (strnlen(dioctl.cf_ctrl.msn, sizeof(dioctl.cf_ctrl.msn)) ==
- sizeof(dioctl.cf_ctrl.msn))
- return -EINVAL;
- if (strnlen(dioctl.cf_ctrl.fwd_nr, sizeof(dioctl.cf_ctrl.fwd_nr)) ==
- sizeof(dioctl.cf_ctrl.fwd_nr))
- return -EINVAL;
- if ((i = cf_command(dioctl.cf_ctrl.drvid,
- (cmd == IIOCDOCFACT) ? 1 : (cmd == IIOCDOCFDIS) ? 0 : 2,
- dioctl.cf_ctrl.cfproc,
- dioctl.cf_ctrl.msn,
- dioctl.cf_ctrl.service,
- dioctl.cf_ctrl.fwd_nr,
- &dioctl.cf_ctrl.procid)))
- return (i);
- break;
-
- default:
- return (-EINVAL);
- } /* switch cmd */
- return copy_to_user((void __user *)arg, &dioctl, sizeof(dioctl)) ? -EFAULT : 0;
-} /* isdn_divert_ioctl */
-
-static long isdn_divert_ioctl(struct file *file, uint cmd, ulong arg)
-{
- long ret;
-
- mutex_lock(&isdn_divert_mutex);
- ret = isdn_divert_ioctl_unlocked(file, cmd, arg);
- mutex_unlock(&isdn_divert_mutex);
-
- return ret;
-}
-
-static const struct file_operations isdn_fops =
-{
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .read = isdn_divert_read,
- .write = isdn_divert_write,
- .poll = isdn_divert_poll,
- .unlocked_ioctl = isdn_divert_ioctl,
- .open = isdn_divert_open,
- .release = isdn_divert_close,
-};
-
-/****************************/
-/* isdn subdir in /proc/net */
-/****************************/
-static struct proc_dir_entry *isdn_proc_entry = NULL;
-static struct proc_dir_entry *isdn_divert_entry = NULL;
-#endif /* CONFIG_PROC_FS */
-
-/***************************************************************************/
-/* divert_dev_init must be called before the proc filesystem may be used */
-/***************************************************************************/
-int
-divert_dev_init(void)
-{
-
- init_waitqueue_head(&rd_queue);
-
-#ifdef CONFIG_PROC_FS
- isdn_proc_entry = proc_mkdir("isdn", init_net.proc_net);
- if (!isdn_proc_entry)
- return (-1);
- isdn_divert_entry = proc_create("divert", S_IFREG | S_IRUGO,
- isdn_proc_entry, &isdn_fops);
- if (!isdn_divert_entry) {
- remove_proc_entry("isdn", init_net.proc_net);
- return (-1);
- }
-#endif /* CONFIG_PROC_FS */
-
- return (0);
-} /* divert_dev_init */
-
-/***************************************************************************/
-/* divert_dev_deinit must be called before leaving isdn when included as */
-/* a module. */
-/***************************************************************************/
-int
-divert_dev_deinit(void)
-{
-
-#ifdef CONFIG_PROC_FS
- remove_proc_entry("divert", isdn_proc_entry);
- remove_proc_entry("isdn", init_net.proc_net);
-#endif /* CONFIG_PROC_FS */
-
- return (0);
-} /* divert_dev_deinit */
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