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Add support for newers kernels, remove the temporary IOCTL and set back the writev function.

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This commit is contained in:
Godzil 2012-07-10 12:48:23 +02:00
parent 789713fa0b
commit 472265ae8a
1 changed files with 45 additions and 14 deletions
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59
kfusd/kfusd.c
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@ -38,7 +38,7 @@
* Copyright (c) 2001, Sensoria Corporation
* Copyright (c) 2002-2003, Regents of the University of California
* Copyright (c) 2007 Monty and Xiph.Org
* Copyright (c) 2009-2011 Manoel Trapier <godzil@godzil.net>
* Copyright (c) 2009-2012 Manoel Trapier <godzil@godzil.net>
*
* $Id: kfusd.c 12354 2007-01-19 17:26:14Z xiphmont $
*/
@ -194,6 +194,11 @@ struct class_private {
#endif
/*
struct sysfs_dirent *attr_sd = dentry->d_fsdata;
struct kobject *kobj = attr_sd->s_parent->s_dir.kobj;
*/
static inline struct kobject * to_kobj (struct dentry * dentry)
{
struct sysfs_dirent * sd = dentry->d_fsdata;
@ -201,7 +206,7 @@ static inline struct kobject * to_kobj (struct dentry * dentry)
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
return ((struct kobject *) sd->s_element );
#else
return ((struct kobject *) sd->s_dir.kobj );
return ((struct kobject *) sd->s_parent->s_dir.kobj );
#endif
else
return NULL;
@ -257,7 +262,7 @@ DEFINE_SEMAPHORE (fusd_devlist_sem);
//#ifdef MODULE_LICENSE
MODULE_AUTHOR ("Jeremy Elson <jelson@acm.org> (c)2001");
MODULE_AUTHOR ("Manoel Trapier <godzil@godzil.net> (c)2009-2011");
MODULE_AUTHOR ("Manoel Trapier <godzil@godzil.net> (c)2009-2012");
MODULE_LICENSE ("GPL");
//#endif
@ -315,7 +320,12 @@ STATIC void rdebug_real (char *fmt, ...)
# define MAX_MEM_DEBUG 10000
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,30)
DECLARE_MUTEX (fusd_memdebug_sem);
#else
DEFINE_SEMAPHORE (fusd_memdebug_sem);
#endif
typedef struct
{
@ -464,6 +474,7 @@ STATIC inline void free_fusd_msg (fusd_msg_t **fusd_msg)
VFREE(( *fusd_msg )->data);
( *fusd_msg )->data = NULL;
}
RDEBUG(1, "Freeing fusd_msg [%p] then set to NULL", fusd_msg);
KFREE(*fusd_msg);
*fusd_msg = NULL;
}
@ -2194,7 +2205,7 @@ STATIC int fusd_register_device (fusd_dev_t *fusd_dev,
if ( sysfs )
{
/* Get FS superblock */
/* Get FS superblock */
sb = sget(sysfs, systest, NULL, NULL);
/* because put_filesystem isn't exported */
@ -2209,7 +2220,7 @@ STATIC int fusd_register_device (fusd_dev_t *fusd_dev,
{
struct qstr name;
/* Search for directory "class" in the root of this filesystem */
/* Search for directory "class" in the root of this filesystem */
name.name = "class";
name.len = 5;
name.hash = full_name_hash(name.name, name.len);
@ -2217,7 +2228,7 @@ STATIC int fusd_register_device (fusd_dev_t *fusd_dev,
if ( classdir )
{
/* Found, now search for class wanted name */
/* Found, now search for class wanted name */
name.name = register_msg.clazz;
name.len = strlen(name.name);
name.hash = full_name_hash(name.name, name.len);
@ -2229,15 +2240,16 @@ STATIC int fusd_register_device (fusd_dev_t *fusd_dev,
struct kobject *ko = to_kobj(classdir2);
sys_class = ( ko ? to_class(ko)->class : NULL );
if ( sys_class )
{
#if 0
if ( sys_class )
{
/* W T F ???? Using an existing sys_class will led to a NULL pointer crash
* during device creation.. Need more investigation, this comportement is clearly not
* normal. */
RDEBUG(1, "ERROR: Using existing class name is currently unsported !!!");
goto register_failed4;
}
RDEBUG(1, "ERROR: Using existing class name is currently unsported !!!");
goto register_failed4;
}
#endif
if ( !sys_class )
RDEBUG(2, "WARNING: sysfs entry for %s has no kobject!\n", register_msg.clazz);
}
@ -2630,7 +2642,7 @@ STATIC ssize_t fusd_write (struct file *file,
RDEBUG(1, "%s: [%p:%p:%d:%p] [sl: %d]!!", __func__, file, buffer, length, offset, sizeof (fusd_msg_t ));
return fusd_process_write(file, buffer, length, NULL, 0);
}
#ifndef HAVE_UNLOCKED_IOCTL
STATIC ssize_t fusd_writev (struct file *file,
const struct iovec *iov,
unsigned long count,
@ -2646,6 +2658,23 @@ STATIC ssize_t fusd_writev (struct file *file,
iov[0].iov_base, iov[0].iov_len,
iov[1].iov_base, iov[1].iov_len);
}
#else
STATIC ssize_t fusd_aio_write (struct kiocb *iocb,
const struct iovec *iov,
unsigned long count,
loff_t offset)
{
if ( count != 2 )
{
RDEBUG(2, "fusd_writev: got illegal iov count of %ld", count);
return -EINVAL;
}
return fusd_process_write(iocb->ki_filp,
iov[0].iov_base, iov[0].iov_len,
iov[1].iov_base, iov[1].iov_len);
}
#endif
#ifndef HAVE_UNLOCKED_IOCTL
STATIC int fusd_ioctl (struct inode *inode, struct file *file,
@ -2656,6 +2685,7 @@ STATIC long fusd_unlocked_ioctl (struct file *file,
#endif
{
void __user *argp = (void __user *) arg;
#if 0
struct iovec iov;
if ( ( argp != NULL ) && ( cmd == 0xb16b00b5 ) )
@ -2672,6 +2702,7 @@ STATIC long fusd_unlocked_ioctl (struct file *file,
return -EIO;
}
}
#endif
RDEBUG(2, "%s: got illegal ioctl #%08X# Or ARG is null [%p]", __func__, cmd, argp);
return -EINVAL;
}
@ -2882,7 +2913,7 @@ STATIC struct file_operations fusd_fops = {
.open = fusd_open,
.read = fusd_read,
.write = fusd_write,
//writev: fusd_writev,
.aio_write = fusd_aio_write,
.unlocked_ioctl = fusd_unlocked_ioctl,
.release = fusd_release,
.poll = fusd_poll,