Sir, i have completed read, write operation in character driver, using semaphore,ioctl. Also implementing kernel timer.  

hello sir, I wanted to ask that how can we use Lables for calling a predefined kernel function from another function. For .eg.. ssize_t scull_write() { write: xyz; } ssize scull_read() { goto write; } this calling of the write … Continue reading →

proper implementation of cdev_init and cdev_add for 25 nod done.

driver register and unregister with kernel perform using register_chrdev function and alloc_chrdev_region and unregister with unregister_chrdev_region . one issue faced: Instead of whole program execute successfully there is no output  and after reboot it gives correct output.

Sir, I have implemeted the project of using multi thread in a single process then in multi process process for char driver by using sleep in the app.c for synchronization between multi thread for read,write,open,close in single process. Is it … Continue reading →