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[/] [or1k_old/] [trunk/] [uclinux/] [uClinux-2.0.x/] [drivers/] [isdn/] [avmb1/] [capi.c] - Blame information for rev 1782

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/*
 * $Id: capi.c,v 1.1.1.1 2001-09-10 07:44:18 simons Exp $
 *
 * CAPI 2.0 Interface for Linux
 *
 * Copyright 1996 by Carsten Paeth (calle@calle.in-berlin.de)
 *
 * $Log: not supported by cvs2svn $
 * Revision 1.1.1.1  2001/07/02 17:58:32  simons
 * Initial revision
 *
 * Revision 1.4  1997/05/27 15:17:50  fritz
 * Added changes for recent 2.1.x kernels:
 *   changed return type of isdn_close
 *   queue_task_* -> queue_task
 *   clear/set_bit -> test_and_... where apropriate.
 *   changed type of hard_header_cache parameter.
 *
 * Revision 1.3  1997/05/18 09:24:14  calle
 * added verbose disconnect reason reporting to avmb1.
 * some fixes in capi20 interface.
 * changed info messages for B1-PCI
 *
 * Revision 1.2  1997/03/05 21:17:59  fritz
 * Added capi_poll for compiling under 2.1.27
 *
 * Revision 1.1  1997/03/04 21:50:29  calle
 * Frirst version in isdn4linux
 *
 * Revision 2.2  1997/02/12 09:31:39  calle
 * new version
 *
 * Revision 1.1  1997/01/31 10:32:20  calle
 * Initial revision
 *
 */
 
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/major.h>
#include <linux/sched.h>
#include <linux/malloc.h>
#include <linux/fcntl.h>
#include <linux/fs.h>
#include <linux/signal.h>
#include <linux/mm.h>
#include <linux/timer.h>
#include <linux/wait.h>
#include <linux/skbuff.h>
#if (LINUX_VERSION_CODE >= 0x020117)
#include <asm/poll.h>
#endif
#include <linux/capi.h>
#include <linux/kernelcapi.h>
 
#include "compat.h"
#include "capiutil.h"
#include "capicmd.h"
#include "capidev.h"
 
#ifdef HAS_NEW_SYMTAB
MODULE_AUTHOR("Carsten Paeth (calle@calle.in-berlin.de)");
#endif
 
/* -------- driver information -------------------------------------- */
 
int capi_major = 68;            /* allocated */
 
#ifdef HAS_NEW_SYMTAB
MODULE_PARM(capi_major, "i");
#endif
 
/* -------- global variables ---------------------------------------- */
 
static struct capidev capidevs[CAPI_MAXMINOR + 1];
struct capi_interface *capifuncs;
 
/* -------- function called by lower level -------------------------- */
 
static void capi_signal(__u16 applid, __u32 minor)
{
        struct capidev *cdev;
        struct sk_buff *skb = 0;
 
        if (minor > CAPI_MAXMINOR || !capidevs[minor].is_registered) {
                printk(KERN_ERR "BUG: capi_signal: illegal minor %d\n", minor);
                return;
        }
        cdev = &capidevs[minor];
        (void) (*capifuncs->capi_get_message) (applid, &skb);
        if (skb) {
                skb_queue_tail(&cdev->recv_queue, skb);
                wake_up_interruptible(&cdev->recv_wait);
        } else {
                printk(KERN_ERR "BUG: capi_signal: no skb\n");
        }
}
 
/* -------- file_operations ----------------------------------------- */
 
#if LINUX_VERSION_CODE < 0x020100
static int capi_lseek(struct inode *inode, struct file *file,
                      off_t offset, int origin)
{
        return -ESPIPE;
}
#else
static long long capi_llseek(struct inode *inode, struct file *file,
                             long long offset, int origin)
{
        return -ESPIPE;
}
#endif
 
#if LINUX_VERSION_CODE < 0x020100
static int capi_read(struct inode *inode, struct file *file,
                     char *buf, int count)
#else
static long capi_read(struct inode *inode, struct file *file,
                      char *buf, unsigned long count)
#endif
{
        unsigned int minor = MINOR(inode->i_rdev);
        struct capidev *cdev;
        struct sk_buff *skb;
        int retval;
        size_t copied;
 
        if (!minor || minor > CAPI_MAXMINOR || !capidevs[minor].is_registered)
                return -ENODEV;
 
        cdev = &capidevs[minor];
 
        if ((skb = skb_dequeue(&cdev->recv_queue)) == 0) {
 
                if (file->f_flags & O_NONBLOCK)
                        return -EAGAIN;
 
                for (;;) {
                        interruptible_sleep_on(&cdev->recv_wait);
                        if ((skb = skb_dequeue(&cdev->recv_queue)) != 0)
                                break;
                        if (current->signal & ~current->blocked)
                                break;
                }
                if (skb == 0)
                        return -ERESTARTNOHAND;
        }
        if (skb->len > count) {
                skb_queue_head(&cdev->recv_queue, skb);
                return -EMSGSIZE;
        }
        if (CAPIMSG_COMMAND(skb->data) == CAPI_DATA_B3
            && CAPIMSG_SUBCOMMAND(skb->data) == CAPI_IND)
                CAPIMSG_SETDATA(skb->data, buf + CAPIMSG_LEN(skb->data));
        retval = copy_to_user(buf, skb->data, skb->len);
        if (retval) {
                skb_queue_head(&cdev->recv_queue, skb);
                return retval;
        }
        copied = skb->len;
 
 
        kfree_skb(skb, FREE_READ);
 
        return copied;
}
 
#if LINUX_VERSION_CODE < 0x020100
static int capi_write(struct inode *inode, struct file *file,
                      const char *buf, int count)
#else
static long capi_write(struct inode *inode, struct file *file,
                       const char *buf, unsigned long count)
#endif
{
        unsigned int minor = MINOR(inode->i_rdev);
        struct capidev *cdev;
        struct sk_buff *skb;
        int retval;
        __u8 cmd;
        __u8 subcmd;
        __u16 mlen;
 
        if (!minor || minor > CAPI_MAXMINOR || !capidevs[minor].is_registered)
                return -ENODEV;
 
        cdev = &capidevs[minor];
 
        skb = alloc_skb(count, GFP_USER);
 
        if ((retval = copy_from_user(skb_put(skb, count), buf, count))) {
                dev_kfree_skb(skb, FREE_WRITE);
                return retval;
        }
        cmd = CAPIMSG_COMMAND(skb->data);
        subcmd = CAPIMSG_SUBCOMMAND(skb->data);
        mlen = CAPIMSG_LEN(skb->data);
        if (cmd == CAPI_DATA_B3 && subcmd == CAPI_REQ) {
                __u16 dlen = CAPIMSG_DATALEN(skb->data);
                if (mlen + dlen != count) {
                        dev_kfree_skb(skb, FREE_WRITE);
                        return -EINVAL;
                }
        } else if (mlen != count) {
                dev_kfree_skb(skb, FREE_WRITE);
                return -EINVAL;
        }
        CAPIMSG_SETAPPID(skb->data, cdev->applid);
 
        cdev->errcode = (*capifuncs->capi_put_message) (cdev->applid, skb);
 
        if (cdev->errcode) {
                dev_kfree_skb(skb, FREE_WRITE);
                return -EIO;
        }
        return count;
}
 
#if (LINUX_VERSION_CODE < 0x020117)
static int capi_select(struct inode *inode, struct file *file,
                       int sel_type, select_table * wait)
{
        unsigned int minor = MINOR(inode->i_rdev);
        struct capidev *cdev;
 
        if (!minor || minor > CAPI_MAXMINOR || !capidevs[minor].is_registered)
                return -ENODEV;
 
        cdev = &capidevs[minor];
 
        switch (sel_type) {
        case SEL_IN:
                if (!skb_queue_empty(&cdev->recv_queue))
                        return 1;
                /* fall througth */
        case SEL_EX:
                /* error conditions ? */
 
                select_wait(&cdev->recv_wait, wait);
                return 0;
        case SEL_OUT:
                /*
                   if (!queue_full())
                   return 1;
                   select_wait(&cdev->send_wait, wait);
                   return 0;
                 */
                return 1;
        }
        return 1;
}
#else
static unsigned int
capi_poll(struct file *file, poll_table * wait)
{
        unsigned int mask = 0;
        unsigned int minor = MINOR(file->f_inode->i_rdev);
        struct capidev *cdev;
 
        if (!minor || minor > CAPI_MAXMINOR || !capidevs[minor].is_registered)
                return POLLERR;
 
        cdev = &capidevs[minor];
        poll_wait(&(cdev->recv_wait), wait);
        mask = POLLOUT | POLLWRNORM;
        if (!skb_queue_empty(&cdev->recv_queue))
                mask |= POLLIN | POLLRDNORM;
        return mask;
}
#endif
 
static int capi_ioctl(struct inode *inode, struct file *file,
                      unsigned int cmd, unsigned long arg)
{
        unsigned int minor = MINOR(inode->i_rdev);
        struct capidev *cdev;
        capi_ioctl_struct data;
        int retval;
 
 
        if (minor >= CAPI_MAXMINOR || !capidevs[minor].is_open)
                return -ENODEV;
 
        cdev = &capidevs[minor];
 
        switch (cmd) {
        case CAPI_REGISTER:
                {
                        if (!minor)
                                return -EINVAL;
                        retval = copy_from_user((void *) &data.rparams,
                                                (void *) arg, sizeof(struct capi_register_params));
                        if (retval)
                                return -EFAULT;
                        if (cdev->is_registered)
                                return -EEXIST;
                        cdev->errcode = (*capifuncs->capi_register) (&data.rparams,
                                                          &cdev->applid);
                        if (cdev->errcode)
                                return -EIO;
                        (void) (*capifuncs->capi_set_signal) (cdev->applid, capi_signal, minor);
                        cdev->is_registered = 1;
                }
                return 0;
 
        case CAPI_GET_VERSION:
                {
                        retval = copy_from_user((void *) &data.contr,
                                                (void *) arg,
                                                sizeof(data.contr));
                        if (retval)
                                return -EFAULT;
                        cdev->errcode = (*capifuncs->capi_get_version) (data.contr, &data.version);
                        if (cdev->errcode)
                                return -EIO;
                        retval = copy_to_user((void *) arg,
                                              (void *) &data.version,
                                              sizeof(data.version));
                        if (retval)
                                return -EFAULT;
                }
                return 0;
 
        case CAPI_GET_SERIAL:
                {
                        retval = copy_from_user((void *) &data.contr,
                                                (void *) arg,
                                                sizeof(data.contr));
                        if (retval)
                                return -EFAULT;
                        cdev->errcode = (*capifuncs->capi_get_serial) (data.contr, data.serial);
                        if (cdev->errcode)
                                return -EIO;
                        retval = copy_to_user((void *) arg,
                                              (void *) data.serial,
                                              sizeof(data.serial));
                        if (retval)
                                return -EFAULT;
                }
                return 0;
        case CAPI_GET_PROFILE:
                {
                        retval = copy_from_user((void *) &data.contr,
                                                (void *) arg,
                                                sizeof(data.contr));
                        if (retval)
                                return -EFAULT;
 
                        if (data.contr == 0) {
                                cdev->errcode = (*capifuncs->capi_get_profile) (data.contr, &data.profile);
                                if (cdev->errcode)
                                        return -EIO;
 
                                retval = copy_to_user((void *) arg,
                                      (void *) &data.profile.ncontroller,
                                       sizeof(data.profile.ncontroller));
 
                        } else {
                                cdev->errcode = (*capifuncs->capi_get_profile) (data.contr, &data.profile);
                                if (cdev->errcode)
                                        return -EIO;
 
                                retval = copy_to_user((void *) arg,
                                                  (void *) &data.profile,
                                                   sizeof(data.profile));
                        }
                        if (retval)
                                return -EFAULT;
                }
                return 0;
 
        case CAPI_GET_MANUFACTURER:
                {
                        retval = copy_from_user((void *) &data.contr,
                                                (void *) arg,
                                                sizeof(data.contr));
                        if (retval)
                                return -EFAULT;
                        cdev->errcode = (*capifuncs->capi_get_manufacturer) (data.contr, data.manufacturer);
                        if (cdev->errcode)
                                return -EIO;
 
                        retval = copy_to_user((void *) arg, (void *) data.manufacturer,
                                              sizeof(data.manufacturer));
                        if (retval)
                                return -EFAULT;
 
                }
                return 0;
        case CAPI_GET_ERRCODE:
                data.errcode = cdev->errcode;
                cdev->errcode = CAPI_NOERROR;
                if (arg) {
                        retval = copy_to_user((void *) arg,
                                              (void *) &data.errcode,
                                              sizeof(data.errcode));
                        if (retval)
                                return -EFAULT;
                }
                return data.errcode;
 
        case CAPI_INSTALLED:
                if ((*capifuncs->capi_installed) ())
                        return 0;
                return -ENXIO;
 
        case CAPI_MANUFACTURER_CMD:
                {
                        struct capi_manufacturer_cmd mcmd;
                        if (minor)
                                return -EINVAL;
                        if (!suser())
                                return -EPERM;
                        retval = copy_from_user((void *) &mcmd, (void *) arg,
                                                sizeof(mcmd));
                        if (retval)
                                return -EFAULT;
                        return (*capifuncs->capi_manufacturer) (mcmd.cmd, mcmd.data);
                }
                return 0;
        }
        return -EINVAL;
}
 
static int capi_open(struct inode *inode, struct file *file)
{
        unsigned int minor = MINOR(inode->i_rdev);
 
        if (minor >= CAPI_MAXMINOR)
                return -ENXIO;
 
        if (minor) {
                if (capidevs[minor].is_open)
                        return -EEXIST;
 
                capidevs[minor].is_open = 1;
                skb_queue_head_init(&capidevs[minor].recv_queue);
                MOD_INC_USE_COUNT;
 
        } else {
 
                if (!capidevs[minor].is_open) {
                        capidevs[minor].is_open = 1;
                        MOD_INC_USE_COUNT;
                }
        }
 
 
        return 0;
}
 
static CLOSETYPE
capi_release(struct inode *inode, struct file *file)
{
        unsigned int minor = MINOR(inode->i_rdev);
        struct capidev *cdev;
        struct sk_buff *skb;
 
        if (minor >= CAPI_MAXMINOR || !capidevs[minor].is_open) {
                printk(KERN_ERR "capi20: release minor %d ???\n", minor);
                return CLOSEVAL;
        }
        cdev = &capidevs[minor];
 
        if (minor) {
 
                if (cdev->is_registered)
                        (*capifuncs->capi_release) (cdev->applid);
 
                cdev->is_registered = 0;
                cdev->applid = 0;
 
                while ((skb = skb_dequeue(&cdev->recv_queue)) != 0)
                        kfree_skb(skb, FREE_READ);
        }
        cdev->is_open = 0;
 
        MOD_DEC_USE_COUNT;
        return CLOSEVAL;
}
 
static struct file_operations capi_fops =
{
#if LINUX_VERSION_CODE < 0x020100
        capi_lseek,
#else
        capi_llseek,
#endif
        capi_read,
        capi_write,
        NULL,                   /* capi_readdir */
#if (LINUX_VERSION_CODE < 0x020117)
        capi_select,
#else
        capi_poll,
#endif
        capi_ioctl,
        NULL,                   /* capi_mmap */
        capi_open,
        capi_release,
        NULL,                   /* capi_fsync */
        NULL,                   /* capi_fasync */
};
 
 
/* -------- init function and module interface ---------------------- */
 
#ifdef MODULE
#define  capi_init      init_module
#endif
 
static struct capi_interface_user cuser = {
        "capi20",
        0,
};
 
int capi_init(void)
{
        memset(capidevs, 0, sizeof(capidevs));
 
        if (register_chrdev(capi_major, "capi20", &capi_fops)) {
                printk(KERN_ERR "capi20: unable to get major %d\n", capi_major);
                return -EIO;
        }
        printk(KERN_NOTICE "capi20: started up with major %d\n", capi_major);
 
        if ((capifuncs = attach_capi_interface(&cuser)) == 0) {
                unregister_chrdev(capi_major, "capi20");
                return -EIO;
        }
        return 0;
}
 
#ifdef MODULE
void cleanup_module(void)
{
        unregister_chrdev(capi_major, "capi20");
        (void) detach_capi_interface(&cuser);
}
 
#endif

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[/] [or1k_old/] [trunk/] [uclinux/] [uClinux-2.0.x/] [drivers/] [isdn/] [avmb1/] [capi.c] - Blame information for rev 1782

Line No.	Rev	Author	Line
1	199	simons	`/*`
2			`* $Id: capi.c,v 1.1.1.1 2001-09-10 07:44:18 simons Exp $`
3			`*`
4			`* CAPI 2.0 Interface for Linux`
5			`*`
6			`* Copyright 1996 by Carsten Paeth (calle@calle.in-berlin.de)`
7			`*`
8			`* $Log: not supported by cvs2svn $`
9			`* Revision 1.1.1.1 2001/07/02 17:58:32 simons`
10			`* Initial revision`
11			`*`
12			`* Revision 1.4 1997/05/27 15:17:50 fritz`
13			`* Added changes for recent 2.1.x kernels:`
14			`* changed return type of isdn_close`
15			`* queue_task_* -> queue_task`
16			`* clear/set_bit -> test_and_... where apropriate.`
17			`* changed type of hard_header_cache parameter.`
18			`*`
19			`* Revision 1.3 1997/05/18 09:24:14 calle`
20			`* added verbose disconnect reason reporting to avmb1.`
21			`* some fixes in capi20 interface.`
22			`* changed info messages for B1-PCI`
23			`*`
24			`* Revision 1.2 1997/03/05 21:17:59 fritz`
25			`* Added capi_poll for compiling under 2.1.27`
26			`*`
27			`* Revision 1.1 1997/03/04 21:50:29 calle`
28			`* Frirst version in isdn4linux`
29			`*`
30			`* Revision 2.2 1997/02/12 09:31:39 calle`
31			`* new version`
32			`*`
33			`* Revision 1.1 1997/01/31 10:32:20 calle`
34			`* Initial revision`
35			`*`
36			`*/`
37
38			`#include <linux/module.h>`
39			`#include <linux/errno.h>`
40			`#include <linux/kernel.h>`
41			`#include <linux/major.h>`
42			`#include <linux/sched.h>`
43			`#include <linux/malloc.h>`
44			`#include <linux/fcntl.h>`
45			`#include <linux/fs.h>`
46			`#include <linux/signal.h>`
47			`#include <linux/mm.h>`
48			`#include <linux/timer.h>`
49			`#include <linux/wait.h>`
50			`#include <linux/skbuff.h>`
51			`#if (LINUX_VERSION_CODE >= 0x020117)`
52			`#include <asm/poll.h>`
53			`#endif`
54			`#include <linux/capi.h>`
55			`#include <linux/kernelcapi.h>`
56
57			`#include "compat.h"`
58			`#include "capiutil.h"`
59			`#include "capicmd.h"`
60			`#include "capidev.h"`
61
62			`#ifdef HAS_NEW_SYMTAB`
63			`MODULE_AUTHOR("Carsten Paeth (calle@calle.in-berlin.de)");`
64			`#endif`
65
66			`/* -------- driver information -------------------------------------- */`
67
68			`int capi_major = 68; /* allocated */`
69
70			`#ifdef HAS_NEW_SYMTAB`
71			`MODULE_PARM(capi_major, "i");`
72			`#endif`
73
74			`/* -------- global variables ---------------------------------------- */`
75
76			`static struct capidev capidevs[CAPI_MAXMINOR + 1];`
77			`struct capi_interface *capifuncs;`
78
79			`/* -------- function called by lower level -------------------------- */`
80
81			`static void capi_signal(__u16 applid, __u32 minor)`
82			`{`
83			`struct capidev *cdev;`
84			`struct sk_buff *skb = 0;`
85
86			`if (minor > CAPI_MAXMINOR \|\| !capidevs[minor].is_registered) {`
87			`printk(KERN_ERR "BUG: capi_signal: illegal minor %d\n", minor);`
88			`return;`
89			`}`
90			`cdev = &capidevs[minor];`
91			`(void) (*capifuncs->capi_get_message) (applid, &skb);`
92			`if (skb) {`
93			`skb_queue_tail(&cdev->recv_queue, skb);`
94			`wake_up_interruptible(&cdev->recv_wait);`
95			`} else {`
96			`printk(KERN_ERR "BUG: capi_signal: no skb\n");`
97			`}`
98			`}`
99
100			`/* -------- file_operations ----------------------------------------- */`
101
102			`#if LINUX_VERSION_CODE < 0x020100`
103			`static int capi_lseek(struct inode inode, struct file file,`
104			`off_t offset, int origin)`
105			`{`
106			`return -ESPIPE;`
107			`}`
108			`#else`
109			`static long long capi_llseek(struct inode inode, struct file file,`
110			`long long offset, int origin)`
111			`{`
112			`return -ESPIPE;`
113			`}`
114			`#endif`
115
116			`#if LINUX_VERSION_CODE < 0x020100`
117			`static int capi_read(struct inode inode, struct file file,`
118			`char *buf, int count)`
119			`#else`
120			`static long capi_read(struct inode inode, struct file file,`
121			`char *buf, unsigned long count)`
122			`#endif`
123			`{`
124			`unsigned int minor = MINOR(inode->i_rdev);`
125			`struct capidev *cdev;`
126			`struct sk_buff *skb;`
127			`int retval;`
128			`size_t copied;`
129
130			`if (!minor \|\| minor > CAPI_MAXMINOR \|\| !capidevs[minor].is_registered)`
131			`return -ENODEV;`
132
133			`cdev = &capidevs[minor];`
134
135			`if ((skb = skb_dequeue(&cdev->recv_queue)) == 0) {`
136
137			`if (file->f_flags & O_NONBLOCK)`
138			`return -EAGAIN;`
139
140			`for (;;) {`
141			`interruptible_sleep_on(&cdev->recv_wait);`
142			`if ((skb = skb_dequeue(&cdev->recv_queue)) != 0)`
143			`break;`
144			`if (current->signal & ~current->blocked)`
145			`break;`
146			`}`
147			`if (skb == 0)`
148			`return -ERESTARTNOHAND;`
149			`}`
150			`if (skb->len > count) {`
151			`skb_queue_head(&cdev->recv_queue, skb);`
152			`return -EMSGSIZE;`
153			`}`
154			`if (CAPIMSG_COMMAND(skb->data) == CAPI_DATA_B3`
155			`&& CAPIMSG_SUBCOMMAND(skb->data) == CAPI_IND)`
156			`CAPIMSG_SETDATA(skb->data, buf + CAPIMSG_LEN(skb->data));`
157			`retval = copy_to_user(buf, skb->data, skb->len);`
158			`if (retval) {`
159			`skb_queue_head(&cdev->recv_queue, skb);`
160			`return retval;`
161			`}`
162			`copied = skb->len;`
163
164
165			`kfree_skb(skb, FREE_READ);`
166
167			`return copied;`
168			`}`
169
170			`#if LINUX_VERSION_CODE < 0x020100`
171			`static int capi_write(struct inode inode, struct file file,`
172			`const char *buf, int count)`
173			`#else`
174			`static long capi_write(struct inode inode, struct file file,`
175			`const char *buf, unsigned long count)`
176			`#endif`
177			`{`
178			`unsigned int minor = MINOR(inode->i_rdev);`
179			`struct capidev *cdev;`
180			`struct sk_buff *skb;`
181			`int retval;`
182			`__u8 cmd;`
183			`__u8 subcmd;`
184			`__u16 mlen;`
185
186			`if (!minor \|\| minor > CAPI_MAXMINOR \|\| !capidevs[minor].is_registered)`
187			`return -ENODEV;`
188
189			`cdev = &capidevs[minor];`
190
191			`skb = alloc_skb(count, GFP_USER);`
192
193			`if ((retval = copy_from_user(skb_put(skb, count), buf, count))) {`
194			`dev_kfree_skb(skb, FREE_WRITE);`
195			`return retval;`
196			`}`
197			`cmd = CAPIMSG_COMMAND(skb->data);`
198			`subcmd = CAPIMSG_SUBCOMMAND(skb->data);`
199			`mlen = CAPIMSG_LEN(skb->data);`
200			`if (cmd == CAPI_DATA_B3 && subcmd == CAPI_REQ) {`
201			`__u16 dlen = CAPIMSG_DATALEN(skb->data);`
202			`if (mlen + dlen != count) {`
203			`dev_kfree_skb(skb, FREE_WRITE);`
204			`return -EINVAL;`
205			`}`
206			`} else if (mlen != count) {`
207			`dev_kfree_skb(skb, FREE_WRITE);`
208			`return -EINVAL;`
209			`}`
210			`CAPIMSG_SETAPPID(skb->data, cdev->applid);`
211
212			`cdev->errcode = (*capifuncs->capi_put_message) (cdev->applid, skb);`
213
214			`if (cdev->errcode) {`
215			`dev_kfree_skb(skb, FREE_WRITE);`
216			`return -EIO;`
217			`}`
218			`return count;`
219			`}`
220
221			`#if (LINUX_VERSION_CODE < 0x020117)`
222			`static int capi_select(struct inode inode, struct file file,`
223			`int sel_type, select_table * wait)`
224			`{`
225			`unsigned int minor = MINOR(inode->i_rdev);`
226			`struct capidev *cdev;`
227
228			`if (!minor \|\| minor > CAPI_MAXMINOR \|\| !capidevs[minor].is_registered)`
229			`return -ENODEV;`
230
231			`cdev = &capidevs[minor];`
232
233			`switch (sel_type) {`
234			`case SEL_IN:`
235			`if (!skb_queue_empty(&cdev->recv_queue))`
236			`return 1;`
237			`/* fall througth */`
238			`case SEL_EX:`
239			`/* error conditions ? */`
240
241			`select_wait(&cdev->recv_wait, wait);`
242			`return 0;`
243			`case SEL_OUT:`
244			`/*`
245			`if (!queue_full())`
246			`return 1;`
247			`select_wait(&cdev->send_wait, wait);`
248			`return 0;`
249			`*/`
250			`return 1;`
251			`}`
252			`return 1;`
253			`}`
254			`#else`
255			`static unsigned int`
256			`capi_poll(struct file file, poll_table wait)`
257			`{`
258			`unsigned int mask = 0;`
259			`unsigned int minor = MINOR(file->f_inode->i_rdev);`
260			`struct capidev *cdev;`
261
262			`if (!minor \|\| minor > CAPI_MAXMINOR \|\| !capidevs[minor].is_registered)`
263			`return POLLERR;`
264
265			`cdev = &capidevs[minor];`
266			`poll_wait(&(cdev->recv_wait), wait);`
267			`mask = POLLOUT \| POLLWRNORM;`
268			`if (!skb_queue_empty(&cdev->recv_queue))`
269			`mask \|= POLLIN \| POLLRDNORM;`
270			`return mask;`
271			`}`
272			`#endif`
273
274			`static int capi_ioctl(struct inode inode, struct file file,`
275			`unsigned int cmd, unsigned long arg)`
276			`{`
277			`unsigned int minor = MINOR(inode->i_rdev);`
278			`struct capidev *cdev;`
279			`capi_ioctl_struct data;`
280			`int retval;`
281
282
283			`if (minor >= CAPI_MAXMINOR \|\| !capidevs[minor].is_open)`
284			`return -ENODEV;`
285
286			`cdev = &capidevs[minor];`
287
288			`switch (cmd) {`
289			`case CAPI_REGISTER:`
290			`{`
291			`if (!minor)`
292			`return -EINVAL;`
293			`retval = copy_from_user((void *) &data.rparams,`
294			`(void *) arg, sizeof(struct capi_register_params));`
295			`if (retval)`
296			`return -EFAULT;`
297			`if (cdev->is_registered)`
298			`return -EEXIST;`
299			`cdev->errcode = (*capifuncs->capi_register) (&data.rparams,`
300			`&cdev->applid);`
301			`if (cdev->errcode)`
302			`return -EIO;`
303			`(void) (*capifuncs->capi_set_signal) (cdev->applid, capi_signal, minor);`
304			`cdev->is_registered = 1;`
305			`}`
306			`return 0;`
307
308			`case CAPI_GET_VERSION:`
309			`{`
310			`retval = copy_from_user((void *) &data.contr,`
311			`(void *) arg,`
312			`sizeof(data.contr));`
313			`if (retval)`
314			`return -EFAULT;`
315			`cdev->errcode = (*capifuncs->capi_get_version) (data.contr, &data.version);`
316			`if (cdev->errcode)`
317			`return -EIO;`
318			`retval = copy_to_user((void *) arg,`
319			`(void *) &data.version,`
320			`sizeof(data.version));`
321			`if (retval)`
322			`return -EFAULT;`
323			`}`
324			`return 0;`
325
326			`case CAPI_GET_SERIAL:`
327			`{`
328			`retval = copy_from_user((void *) &data.contr,`
329			`(void *) arg,`
330			`sizeof(data.contr));`
331			`if (retval)`
332			`return -EFAULT;`
333			`cdev->errcode = (*capifuncs->capi_get_serial) (data.contr, data.serial);`
334			`if (cdev->errcode)`
335			`return -EIO;`
336			`retval = copy_to_user((void *) arg,`
337			`(void *) data.serial,`
338			`sizeof(data.serial));`
339			`if (retval)`
340			`return -EFAULT;`
341			`}`
342			`return 0;`
343			`case CAPI_GET_PROFILE:`
344			`{`
345			`retval = copy_from_user((void *) &data.contr,`
346			`(void *) arg,`
347			`sizeof(data.contr));`
348			`if (retval)`
349			`return -EFAULT;`
350
351			`if (data.contr == 0) {`
352			`cdev->errcode = (*capifuncs->capi_get_profile) (data.contr, &data.profile);`
353			`if (cdev->errcode)`
354			`return -EIO;`
355
356			`retval = copy_to_user((void *) arg,`
357			`(void *) &data.profile.ncontroller,`
358			`sizeof(data.profile.ncontroller));`
359
360			`} else {`
361			`cdev->errcode = (*capifuncs->capi_get_profile) (data.contr, &data.profile);`
362			`if (cdev->errcode)`
363			`return -EIO;`
364
365			`retval = copy_to_user((void *) arg,`
366			`(void *) &data.profile,`
367			`sizeof(data.profile));`
368			`}`
369			`if (retval)`
370			`return -EFAULT;`
371			`}`
372			`return 0;`
373
374			`case CAPI_GET_MANUFACTURER:`
375			`{`
376			`retval = copy_from_user((void *) &data.contr,`
377			`(void *) arg,`
378			`sizeof(data.contr));`
379			`if (retval)`
380			`return -EFAULT;`
381			`cdev->errcode = (*capifuncs->capi_get_manufacturer) (data.contr, data.manufacturer);`
382			`if (cdev->errcode)`
383			`return -EIO;`
384
385			`retval = copy_to_user((void ) arg, (void ) data.manufacturer,`
386			`sizeof(data.manufacturer));`
387			`if (retval)`
388			`return -EFAULT;`
389
390			`}`
391			`return 0;`
392			`case CAPI_GET_ERRCODE:`
393			`data.errcode = cdev->errcode;`
394			`cdev->errcode = CAPI_NOERROR;`
395			`if (arg) {`
396			`retval = copy_to_user((void *) arg,`
397			`(void *) &data.errcode,`
398			`sizeof(data.errcode));`
399			`if (retval)`
400			`return -EFAULT;`
401			`}`
402			`return data.errcode;`
403
404			`case CAPI_INSTALLED:`
405			`if ((*capifuncs->capi_installed) ())`
406			`return 0;`
407			`return -ENXIO;`
408
409			`case CAPI_MANUFACTURER_CMD:`
410			`{`
411			`struct capi_manufacturer_cmd mcmd;`
412			`if (minor)`
413			`return -EINVAL;`
414			`if (!suser())`
415			`return -EPERM;`
416			`retval = copy_from_user((void ) &mcmd, (void ) arg,`
417			`sizeof(mcmd));`
418			`if (retval)`
419			`return -EFAULT;`
420			`return (*capifuncs->capi_manufacturer) (mcmd.cmd, mcmd.data);`
421			`}`
422			`return 0;`
423			`}`
424			`return -EINVAL;`
425			`}`
426
427			`static int capi_open(struct inode inode, struct file file)`
428			`{`
429			`unsigned int minor = MINOR(inode->i_rdev);`
430
431			`if (minor >= CAPI_MAXMINOR)`
432			`return -ENXIO;`
433
434			`if (minor) {`
435			`if (capidevs[minor].is_open)`
436			`return -EEXIST;`
437
438			`capidevs[minor].is_open = 1;`
439			`skb_queue_head_init(&capidevs[minor].recv_queue);`
440			`MOD_INC_USE_COUNT;`
441
442			`} else {`
443
444			`if (!capidevs[minor].is_open) {`
445			`capidevs[minor].is_open = 1;`
446			`MOD_INC_USE_COUNT;`
447			`}`
448			`}`
449
450
451			`return 0;`
452			`}`
453
454			`static CLOSETYPE`
455			`capi_release(struct inode inode, struct file file)`
456			`{`
457			`unsigned int minor = MINOR(inode->i_rdev);`
458			`struct capidev *cdev;`
459			`struct sk_buff *skb;`
460
461			`if (minor >= CAPI_MAXMINOR \|\| !capidevs[minor].is_open) {`
462			`printk(KERN_ERR "capi20: release minor %d ???\n", minor);`
463			`return CLOSEVAL;`
464			`}`
465			`cdev = &capidevs[minor];`
466
467			`if (minor) {`
468
469			`if (cdev->is_registered)`
470			`(*capifuncs->capi_release) (cdev->applid);`
471
472			`cdev->is_registered = 0;`
473			`cdev->applid = 0;`
474
475			`while ((skb = skb_dequeue(&cdev->recv_queue)) != 0)`
476			`kfree_skb(skb, FREE_READ);`
477			`}`
478			`cdev->is_open = 0;`
479
480			`MOD_DEC_USE_COUNT;`
481			`return CLOSEVAL;`
482			`}`
483
484			`static struct file_operations capi_fops =`
485			`{`
486			`#if LINUX_VERSION_CODE < 0x020100`
487			`capi_lseek,`
488			`#else`
489			`capi_llseek,`
490			`#endif`
491			`capi_read,`
492			`capi_write,`
493			`NULL, /* capi_readdir */`
494			`#if (LINUX_VERSION_CODE < 0x020117)`
495			`capi_select,`
496			`#else`
497			`capi_poll,`
498			`#endif`
499			`capi_ioctl,`
500			`NULL, /* capi_mmap */`
501			`capi_open,`
502			`capi_release,`
503			`NULL, /* capi_fsync */`
504			`NULL, /* capi_fasync */`
505			`};`
506
507
508			`/* -------- init function and module interface ---------------------- */`
509
510			`#ifdef MODULE`
511			`#define capi_init init_module`
512			`#endif`
513
514			`static struct capi_interface_user cuser = {`
515			`"capi20",`
516			`0,`
517			`};`
518
519			`int capi_init(void)`
520			`{`
521			`memset(capidevs, 0, sizeof(capidevs));`
522
523			`if (register_chrdev(capi_major, "capi20", &capi_fops)) {`
524			`printk(KERN_ERR "capi20: unable to get major %d\n", capi_major);`
525			`return -EIO;`
526			`}`
527			`printk(KERN_NOTICE "capi20: started up with major %d\n", capi_major);`
528
529			`if ((capifuncs = attach_capi_interface(&cuser)) == 0) {`
530			`unregister_chrdev(capi_major, "capi20");`
531			`return -EIO;`
532			`}`
533			`return 0;`
534			`}`
535
536			`#ifdef MODULE`
537			`void cleanup_module(void)`
538			`{`
539			`unregister_chrdev(capi_major, "capi20");`
540			`(void) detach_capi_interface(&cuser);`
541			`}`
542
543			`#endif`