Saturday, September 29, 2018

How I ended up writing opensnoop in pure C using eBPF

Hello friends, it's been awhile. I recently had the opportunity to do a deep dive on eBPF and I learned a lot in the process. There isn't a lot out there on the subject, so I decided to put together a long-form article about the experience:

You'll notice that this is hosted on GitHub Pages rather than on itself. I expect there to be typos to fix and cross-references to add over time, so it seemed easiest to colocate the article with the code and have both in version control so I can track changes properly. Also, it's nice to be able to compose things in Markdown (or in Quip and then export to Markdown) and then let a GitHub Pages template do the rest, particularly when it comes to syntax highlighting the code samples.


  1. How to activate CWTV channel?

    Click on the page, to begin the channel activation. You need to provide the channel activation code. After adding the channel, tap on the channel icon and proceed with the settings to find the code. You will enjoy watching the entertaining cwtv channel programs such as The Flash, Supernatural, Arrow, Super Girl and lot more. Make a note of the customer support +1-805-436-1200 and dial it right away. Let the agents contact you.

    In case if you come across issues and errors check the activation page and verify the code used. Device reset can help to fix issues

  2. How to activate Comet TV on Roku?

    Its time to activate Comet TV on Roku and start watching the top and entertaining programs. It’s the category, Sci & Tech where you can find the channel. After adding the channel, find the activation code and you can provide the code visiting the channel activation page. Start watching the entertaining Comet TV channel programs such as The Outer Limits, Men Into Space, Wild World and lot more.

    To get help and support to complete Comet TV activation, dial +1-844-576-1390 our network support executives will guide you to know how to watch Comet TV on Roku, check out the latest article and Blog post on our portal

  3. "Nice Blog!!
    Norton login is one of the easiest platform that allows you to manage products download Norton antivirus and protect your device from online threats.
    Norton Account
    Norton Setup"

  4. Good Post!!
    AOL Mail serve all the emails in your account, with aol email will get all updates on your mails promptly by creating aol account.
    AOL Account
    AOL Gold Download

  5. How to Activate VH1 Application?
    First, you have to get the app from the channel store and go to the channel store by choosing the streaming channels option. Go to the Movies and TV section and get the app. Now, access the app and receive the code. After that, visit by opening a web browser. Then, opt for the pay TV provider and key in the channel link code to the text box. Finally, click Activate and initiate the process of activation If you want more information about vh1 channel activation please visit our site

  6. YouTube TV channel activation guide
    You can select the compatible device, add the channel, and then proceed with the settings to collect the activation code. This code must be provided on the page, tv. Sign in with the channel account, if necessary. For help and support to execute YouTube TV channel activation, please Visit our site

  7. How to Activate USTV on Roku?
    USTV offers a brilliant collection of TV shows and movies directly to your home via your Roku streaming devices. If you wish to activate the USTV on Roku, you cannot directly download the app from the Roku Channels Store. Instead, you can follow the subsequent steps to activate the USTV channel app as a private channel on your Roku. Head to the portal from your Roku web browser and click on the Add Channel button. Once added, you can launch the app from the Roku Channels list and activate it by entering the code on the portal again.If you want more information about USTV on Roku please visit our site and Contact our helpline for further questions by dialing our number +1-805-436-1200

  8. How to activate TCM on Roku –
    To activate TCM channel on Roku, here we explain the channel activation steps. Select your Roku device and complete the setup, if it’s brand new. Now sign in to the Roku account and check if your device is linked to the roku account. If yes, visit the appropriate channel store. Search typing the channel name. As soon as you receive the channel search results, provide the code navigating to the page, For help and support to execute TCM channel activation, contact our team of network support executives by dialing our number +1-855-626-1730 and visit our site

  9. Twitch TV channel activation on Roku
    Are you ready to activate the Twitch TV channel? The channel activation steps are here for your reference. If you are new to the Roku streaming platform, select the best device among Roku Express, Express Plus, Premiere, and Premiere plus. Complete the setup and then navigate to the store. Add the channel to find the activation code. This code must be provided on the page, Sign with the Twitch TV channel account, if required. If you are expecting any help to complete Twitch TV channel activation, talk to our network support team by dialing our number +1-855-718-4111 and visit our site

  10. How to Activate Fox Sports on Roku through
    If you wish to know how to successfully activate the Fox Sports app on your Roku via, then follow the instructions provided in this guide. First up, head to the Roku Channels Store and download the Fox Sports app. Do this instantly by typing Fox Sports in the search bar and hit OK. Once downloaded, launch the Fox Sports app and note the activation code displayed on screen on the Fox Sports app. Now, visit and enter the code, sign in and hit OK to conclude the process.
    If you want more information about activation of foxsports on roku visit our site

  11. Getting programming assignment help is very easy but you have to make sure that you select the right website. There are many websites on the internet that claim to offer programming assignment help but not all of them are good. Some of these websites employ students and these students do an okayish job when they work on your assignment. The good websites, on the other hand, have professionals working for them and these professionals offer the best programming help.