Shulou(Shulou.com)06/02 Report--

Editor to share with you the use of linux ltrace command to track the process of calling library functions, I hope you will learn a lot after reading this article, let's discuss it together!

The ltrace command is used to track how the process calls library functions, and ltrace is actually based on ptrace. We know that ptrace can be used primarily to track system calls, so how does it track library functions? First, ltrace opens the elf file and analyzes it. In the elf file, for the need of dynamic connection, the symbol of the function needs to be saved in the elf file for the connector to use.

Syntax format: ltrace [parameters]

Common parameters:

Reference example

The most basic application, without any parameters:

[root@linuxcool ~] # ltrace. / a.out

Output call time cost:

[root@linuxcool] # ltrace-T. / a.out

Display system calls:

[root@linuxcool] # ltrace-S. / a.out

Calculate the time and call, and print a summary when the program exits:

[root@linuxcool ~] # ltrace-c. / a.out

Print debugging information:

[root@linuxcool] # ltrace-d. / a.out has finished reading this article. I believe you have a certain understanding of using the ltrace command in linux to track the process of calling library functions. Want to know more about it. Welcome to follow the industry information channel. Thank you for reading!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.