We just used two command “insmod” and “rmmod” to insert and remove the module from the Kernel. And We also make some Pseudo programs for 2.4 and 2.6 compatible kernels. What is the benefit of making some program using 2.6 … Continue reading
Classes of Device Driver will be start on Thursday onwards, so be there at right time and be regular ….
Applications that use nonblocking I/O often use the poll, select, and epoll system calls as well. poll, select, and epoll have essentially the same functionality .each allow a process to determine whether it can read from or write to one … Continue reading
The scullpipe driver is a special form of scull that implements a pipe-like device. Within a driver, a process blocked in a read call is awakened when data arrives,usu- ally the hardware issues an interrupt to signal such an event, … Continue reading
8051 has 40 pins on DIP,yet the comparison with z80 microprocessor shows the 8051 has 58 pins function?
Unix systems have traditionally restricted privileged operations to the superuser account. This meant that privilege was an all-or-nothing thing—the superuser can do absolutely anything, but all other users are highly restricted. The Linux kernel pro- vides a more flexible system … Continue reading
Any updates for client server application using pipes
sigpending(sigset_t *set); sigpending examines that the signals are blocked or pending. it returns the set of signals that are pending for delivery to the calling process i.e. the siganls while have been raised while blocked. This set of signals are … Continue reading
Signal handlers usually execute on the current stack of the process. This lets the signal handler return to the point that execution was interrupted in the process. This can be changed on a per-signal basis so that a signal handler … Continue reading
The prototype of kmalloc is: void *kmalloc(size_t size,int flags); The first argument to the kmalloc is the size of the block to be allocated.The second argument is allocation flag. The most commonly used allocation flag is GFP_KERNEL means that allocation … Continue reading
Today there are so many computer languages that we use, it has been long since we are using the C language. But with new languages being developed , is it that C has eventually become out dated, or there are … Continue reading