ioctl.cpp

来自「JFFS的源代码」· C++ 代码 · 共 26 行

#include "../jffs/jffstypes.h"
#include "../jffs/errno.h"
#include "../jffs/fs.h"

int mf_ioctl(unsigned int fd, unsigned int cmd, unsigned long arg)
{	
	struct file * filp;
	int retval = 0;

	filp = fget(fd);
	
	if(filp==NULL)
		return -EBADF;
		
	switch (cmd) {
		default:
			/*if (filp->f_inode && S_ISREG(filp->f_inode->i_mode))
				retval = file_ioctl(filp, cmd, arg);
			else*/ if (filp->f_op && filp->f_op->ioctl)
				retval = filp->f_op->ioctl(filp->f_inode, filp, cmd, arg);
			else 
				retval = -ENOTTY;
	}
	fput(filp, filp->f_inode);
	return retval;
}