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83 lines
2.3 KiB
83 lines
2.3 KiB
20 years ago
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/* $Id divert_init.c,v 1.5.6.2 2001/01/24 22:18:17 kai Exp $
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*
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* Module init for DSS1 diversion services for i4l.
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*
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* Copyright 1999 by Werner Cornelius (werner@isdn4linux.de)
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include "isdn_divert.h"
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MODULE_DESCRIPTION("ISDN4Linux: Call diversion support");
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MODULE_AUTHOR("Werner Cornelius");
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MODULE_LICENSE("GPL");
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/****************************************/
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/* structure containing interface to hl */
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/****************************************/
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isdn_divert_if divert_if =
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{ DIVERT_IF_MAGIC, /* magic value */
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DIVERT_CMD_REG, /* register cmd */
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ll_callback, /* callback routine from ll */
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NULL, /* command still not specified */
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NULL, /* drv_to_name */
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NULL, /* name_to_drv */
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};
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/*************************/
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/* Module interface code */
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/* no cmd line parms */
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/*************************/
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static int __init divert_init(void)
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{ int i;
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if (divert_dev_init())
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{ printk(KERN_WARNING "dss1_divert: cannot install device, not loaded\n");
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return(-EIO);
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}
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if ((i = DIVERT_REG_NAME(&divert_if)) != DIVERT_NO_ERR)
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{ divert_dev_deinit();
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printk(KERN_WARNING "dss1_divert: error %d registering module, not loaded\n",i);
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return(-EIO);
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}
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printk(KERN_INFO "dss1_divert module successfully installed\n");
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return(0);
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}
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/**********************/
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/* Module deinit code */
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/**********************/
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static void __exit divert_exit(void)
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{
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unsigned long flags;
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int i;
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spin_lock_irqsave(&divert_lock, flags);
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divert_if.cmd = DIVERT_CMD_REL; /* release */
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if ((i = DIVERT_REG_NAME(&divert_if)) != DIVERT_NO_ERR)
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{ printk(KERN_WARNING "dss1_divert: error %d releasing module\n",i);
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spin_unlock_irqrestore(&divert_lock, flags);
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return;
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}
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if (divert_dev_deinit())
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{ printk(KERN_WARNING "dss1_divert: device busy, remove cancelled\n");
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spin_unlock_irqrestore(&divert_lock, flags);
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return;
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}
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spin_unlock_irqrestore(&divert_lock, flags);
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deleterule(-1); /* delete all rules and free mem */
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deleteprocs();
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printk(KERN_INFO "dss1_divert module successfully removed \n");
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}
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module_init(divert_init);
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module_exit(divert_exit);
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