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WSL2-Linux-Kernel
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[PATCH] Convert i2o to compat_ioctl 

Also broken design in its compat handlers - CONFIG_COMPAT doesn't 
mean that there should be no native ioctls.

Signed-off-by: Andi Kleen <ak@muc.de>

Reworked with comments from Markus Lidel by:
Christoph Hellwig <hch@infradead.org>

Rejections fixed and
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
2005-04-10 22:29:42 -05:00 коммит произвёл James Bottomley
Родитель 0db7157ca4
Коммит 83363ea074
1 изменённых файлов: 27 добавлений и 14 удалений
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41
drivers/message/i2o/i2o_config.c
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@ -54,6 +54,9 @@
extern int i2o_parm_issue(struct i2o_device *, int, void *, int, void *, int);
static int i2o_cfg_ioctl(struct inode *inode, struct file *fp, unsigned int cmd,
unsigned long arg);
static spinlock_t i2o_config_lock;
#define MODINC(x,y) ((x) = ((x) + 1) % (y))
@ -538,8 +541,7 @@ static int i2o_cfg_evt_get(unsigned long arg, struct file *fp)
}
#ifdef CONFIG_COMPAT
static int i2o_cfg_passthru32(unsigned fd, unsigned cmnd, unsigned long arg,
struct file *file)
static int i2o_cfg_passthru32(struct file *file, unsigned cmnd, unsigned long arg)
{
struct i2o_cmd_passthru32 __user *cmd;
struct i2o_controller *c;
@ -752,7 +754,26 @@ static int i2o_cfg_passthru32(unsigned fd, unsigned cmnd, unsigned long arg,
return rcode;
}
#else
static long i2o_cfg_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg)
{
int ret;
lock_kernel();
switch (cmd) {
case I2OGETIOPS:
ret = i2o_cfg_ioctl(NULL, file, cmd, arg);
break;
case I2OPASSTHRU32:
ret = i2o_cfg_passthru32(file, cmd, arg);
break;
default:
ret = -ENOIOCTLCMD;
break;
}
unlock_kernel();
return ret;
}
#endif
static int i2o_cfg_passthru(unsigned long arg)
{
@ -958,7 +979,6 @@ static int i2o_cfg_passthru(unsigned long arg)
kfree(reply);
return rcode;
}
#endif
/*
* IOCTL Handler
@ -1013,11 +1033,9 @@ static int i2o_cfg_ioctl(struct inode *inode, struct file *fp, unsigned int cmd,
ret = i2o_cfg_evt_get(arg, fp);
break;
#ifndef CONFIG_COMPAT
case I2OPASSTHRU:
ret = i2o_cfg_passthru(arg);
break;
#endif
default:
osm_debug("unknown ioctl called!\n");
@ -1105,6 +1123,9 @@ static struct file_operations config_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.ioctl = i2o_cfg_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = i2o_cfg_compat_ioctl,
#endif
.open = cfg_open,
.release = cfg_release,
.fasync = cfg_fasync,
@ -1134,19 +1155,11 @@ static int __init i2o_config_init(void)
misc_deregister(&i2o_miscdev);
return -EBUSY;
}
#ifdef CONFIG_COMPAT
register_ioctl32_conversion(I2OPASSTHRU32, i2o_cfg_passthru32);
register_ioctl32_conversion(I2OGETIOPS, (void *)sys_ioctl);
#endif
return 0;
}
static void i2o_config_exit(void)
{
#ifdef CONFIG_COMPAT
unregister_ioctl32_conversion(I2OPASSTHRU32);
unregister_ioctl32_conversion(I2OGETIOPS);
#endif
misc_deregister(&i2o_miscdev);
i2o_driver_unregister(&i2o_config_driver);
}