These are my blogs
and also my life
Stack Protection with a Canary
2021-06-11 c arm assembly
Buffer overflows can be detected by inserting a canary into a function. These canaries are inserted when a function’s stack frame is created. ... Read More
Finding Libriaries and Headers for C Programs in Unix
2021-05-27 c
Need to list the installed libraries on a Unix system? Want to use a library in C and don’t know the linker flags to use? Need to find where ... Read More
Implementing a Timeout for a read in C
2021-04-12 c
Need to wait a specified amount of time for a read call to return before giving up and continuing on? In Unix when we read from a file we can have a ... Read More
Timestamps in C
2020-12-02 c
In this post I’ll provide some ways to create, convert and print timestamps using C. We’ll first create a Unix epoch which corresponds to ... Read More
Disassembly of Recursion in C
2020-09-25 c assembly arm
Let’s disassemble a recursive function in C to ARM assembly. We can use the textbook example of a recursive factorial function. We’ll play ... Read More
Systemd: Timers
2020-06-30 unix c systemd
In the fourth post on how to create a service in systemd we will create a timer that will run every minute sending messages to our example foo service ... Read More
Systemd: A Service and a Socket
2020-06-26 unix c systemd
This is the third post on how to create a service in systemd. See the first post to create a autotools project and start/stop a daemon service. Or the ... Read More
Status, Reloading and Journalling in Systemd
2020-06-23 unix c systemd
This is the second post on how to create a service in systemd. In the first post we created an autotools project and were able to start, stop and get ... Read More
Viterbi Example
2020-05-01 c signal-processing
Here we go! In this post I’m going to go through how Viterbi Decoders work. There is a lot to cover since we need to touch on Convolutional ... Read More
I/O Multiplexing in Unix
2020-04-26 unix c
In Unix a process performs I/O on a single file descriptor at a time. When we talk about I/O on a file think read() and write() calls which are ... Read More