hello,
i found that in struct proc_dir_entry struct file_operations * proc_fops; is
defined. and struct file_operations has defined read, write, poll, llseek,ioctl,flush,release,lock etc functions. so can all these functions be used on any /proc entry in usermode as well as in kenrel mode?
Also can following functions be used on my own created /proc file kernel
module and when to use them as i have alredy struct file_opereations read and
write routine that read/write to/from /proc file.
typedef int (read_proc_t)(char *page, char **start, off_t off,
int count, int *eof, void *data);
typedef int (write_proc_t)(struct file *file, const char *buffer,
unsigned long count, void *data);
typedef int (get_info_t)(char *, char **, off_t, int);

regards,
cranium

You access proc files through the vfs layer (like you do every fs) so ALL fs ops can be run on it. That specific struct you are refering to would only include the functions that don't use the vfs default implementation.