compat_cdrom_generic_command

Name:compat_cdrom_generic_command

Proto:static int compat_cdrom_generic_command(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg)

Type:int

Parameter:

Type	Parameter	Name
struct block_device *	bdev
fmode_t	mode
unsigned int	cmd
unsigned long	arg

148

149

154

cgc = Allocate user-space memory for the duration of a single system call,* in order to marshall parameters inside a compat thunk.

155

cgc32 = A pointer passed in from user mode. This should not* be used for syscall parameters, just declare them* as pointers because the syscall entry code will have* appropriately converted them already.

157

If copy_in_user( & cmd, & cmd, size of cmd ) || Get a simple variable from user space(data, & buffer) || Write a simple value into user space(A pointer passed in from user mode. This should not* be used for syscall parameters, just declare them* as pointers because the syscall entry code will have* appropriately converted them already., & buffer) || copy_in_user( & buflen, & buflen, (sizeof(unsignedint) + sizeof(int))) || Get a simple variable from user space(data, & sense) || Write a simple value into user space(A pointer passed in from user mode. This should not* be used for syscall parameters, just declare them* as pointers because the syscall entry code will have* appropriately converted them already., & sense) || Get a simple variable from user space(dir, & data_direction) || Write a simple value into user space(dir, & data_direction) || Get a simple variable from user space(itmp, & quiet) || Write a simple value into user space(itmp, & quiet) || Get a simple variable from user space(itmp, & timeout) || Write a simple value into user space(itmp, & timeout) || Get a simple variable from user space(data, & reserved[0]) || Write a simple value into user space(A pointer passed in from user mode. This should not* be used for syscall parameters, just declare them* as pointers because the syscall entry code will have* appropriately converted them already., & unused, actually [0]) Then Return -EFAULT

174

Return __blkdev_driver_ioctl(bdev, mode, cmd, (unsignedlong)cgc)

**Caller**
Name	Describe
compat_blkdev_driver_ioctl

Source code conversion tool public plug-in interface	X
Support c/c++/esqlc/java Oracle/Informix/Mysql Plug-in can realize: logical Report Code generation and batch code conversion