I don`t think file_operations structure contain aio_read variable. If any thing wrong please let me know.
struct file_operations {
loff_t (*llseek) (struct file *, loff_t, int);
ssize_t (*read) (struct file *, char *, size_t, loff_t *);
ssize_t (*write) (struct file *, const char *, size_t, loff_t *);
int (*readdir) (struct file *, void *, filldir_t);
unsigned int (*poll) (struct file *, struct poll_table_struct *);
int (*ioctl) (struct inode *, struct file *, unsigned int, unsigned long);
int (*mmap) (struct file *, struct vm_area_struct *);
int (*open) (struct inode *, struct file *);
int (*flush) (struct file *);
int (*release) (struct inode *, struct file *);
int (*fsync) (struct file *, struct dentry *);
int (*fasync) (int, struct file *, int);
int (*check_media_change) (kdev_t dev);
int (*revalidate) (kdev_t dev);
int (*lock) (struct file *, int, struct file_lock *);
};
Regards,
Rajath.N.R
On 12/8/06, Parav Pandit <paravpandit@xxxxxxxxx> wrote:
Hi,I am adding aio_read and aio_write hooks to my character driver.When I make aio_read() system call, for some reason instead of dbg_aio_read(), kernel is calling the syncronous dbg_read() function.Here is the application level code for opening the file:fd = open("/dev/debug_driver", O_RDONLY );Below is the file_operations structure:static struct file_operations debug_fops = {.owner = THIS_MODULE,.aio_read = dbg_aio_read,.read = dbg_read,.ioctl = dbg_ioctl,.open = dbg_open,.release = dbg_release,};What additional thing I need to do so that my char driver aio_read is called when application calls aio_read() system call?Interestingly same code is working if i open a normal text file.Regards,Parav Pandit
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