Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 319 insertions, 0 deletions

diff --git a/drivers/isdn/divert/divert_procfs.c b/drivers/isdn/divert/divert_procfs.c
new file mode 100644
index 000000000000..e1f0d87de0eb
--- /dev/null
+++ b/drivers/isdn/divert/divert_procfs.c
@@ -0,0 +1,319 @@
+/* $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/config.h>
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/poll.h>
+#include <linux/smp_lock.h>
+#ifdef CONFIG_PROC_FS
+#include <linux/proc_fs.h>
+#else
+#include <linux/fs.h>
+#endif
+#include <linux/isdnif.h>
+#include "isdn_divert.h"
+
+
+/*********************************/
+/* Variables for interface queue */
+/*********************************/
+ulong if_used = 0;              /* number of interface users */
+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 = (struct divert_info *) 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 */
+
+/**********************************/
+/* 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 (!*((struct divert_info **) file->private_data)) {
+                if (file->f_flags & O_NONBLOCK)
+                        return -EAGAIN;
+                interruptible_sleep_on(&(rd_queue));
+        }
+        if (!(inf = *((struct divert_info **) file->private_data)))
+                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 unsigned int
+isdn_divert_poll(struct file *file, poll_table * wait)
+{
+        unsigned int mask = 0;
+
+        poll_wait(file, &(rd_queue), wait);
+        /* mask = POLLOUT | POLLWRNORM; */
+        if (*((struct divert_info **) file->private_data)) {
+                mask |= POLLIN | POLLRDNORM;
+        }
+        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(struct inode *inode, 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 ((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 */
+
+
+#ifdef CONFIG_PROC_FS
+static struct file_operations isdn_fops =
+{
+        .owner          = THIS_MODULE,
+        .llseek         = no_llseek,
+        .read           = isdn_divert_read,
+        .write          = isdn_divert_write,
+        .poll           = isdn_divert_poll,
+        .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 = create_proc_entry("isdn", S_IFDIR | S_IRUGO | S_IXUGO, proc_net);
+        if (!isdn_proc_entry)
+                return (-1);
+        isdn_divert_entry = create_proc_entry("divert", S_IFREG | S_IRUGO, isdn_proc_entry);
+        if (!isdn_divert_entry) {
+                remove_proc_entry("isdn", proc_net);
+                return (-1);
+        }
+        isdn_divert_entry->proc_fops = &isdn_fops; 
+        isdn_divert_entry->owner = THIS_MODULE; 
+#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", proc_net);
+#endif  /* CONFIG_PROC_FS */
+
+        return (0);
+}                               /* divert_dev_deinit */