libs | kernel module driver , and the eBPF driver sources

by falcosecurity C Version: 0.11.2 License: Apache-2.0

X-Ray Key Features Code Snippets(1)Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | libs Summary

libs is a C library. libs has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

As per the OSS Libraries Contribution Plan, this repository has been chosen to be the new home for libsinsp, libscap, the kernel module and the eBPF probe sources. Refer to for more informations. These components are at the foundation of Falco and other projects that work with the same kind of data. This component stack mainly operates on a data source: system calls. This data source is collected using either a kernel module or an eBPF probe, which we call drivers. On top of the drivers, libscap manages the data capture process, libsinsp enriches the data, and provides a rich set of API to consume the data. Furthermore, these two libraries also implement a plugin framework that extends this stack to potentially any other data sources.

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Quality

Security

License

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Support

libs has a low active ecosystem.

It has 164 star(s) with 127 fork(s). There are 27 watchers for this library.

It had no major release in the last 12 months.

There are 41 open issues and 99 have been closed. On average issues are closed in 90 days. There are 28 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of libs is 0.11.2

Quality

libs has no bugs reported.

Security

libs has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

libs is licensed under the Apache-2.0 License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

libs releases are available to install and integrate.

Installation instructions, examples and code snippets are available.

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libs Key Features

No Key Features are available at this moment for libs.

libs Examples and Code Snippets

Extracts valid libs from a file .

python

Lines of Code : 14

License : Non-SPDX (Apache License 2.0)

Copy

def extract_valid_libs(filepath):
  """Evaluate syslibs_configure.bzl, return the VALID_LIBS set from that file."""

  # Stub only
  def repository_rule(**kwargs):  # pylint: disable=unused-variable
    del kwargs

  # Populates VALID_LIBS
  with ope

Community Discussions

Trending Discussions on libs

how to get jstree instance from iframe source?

How to Config Javascript ' script in Django?

Django modal bootstrap not displaying

Using std::atomic with futex system call

How to show and hide Div by mutiple Select form after submission

jQuery command fails to create table when placed after select element

on click clone li with different li class

10-seconds count-up timer / vue.js

How to find an HTML element in array of HTML siblings of one parent ReactJS

How to convert a pair of iterator into a view?

QUESTION

how to get jstree instance from iframe source?

Asked 2021-Jun-16 at 03:07

I have prepare 2 tree view in separate iframe using jstree. The right tree view should control the left tree view. When user click one one the list in right tree view, the respective item folder will open and selected on left tree view. I can make it happen using div in single page. I control the left tree view using instance of left tree view in right jstree div var instance = $('#left').jstree(true);.

...

ANSWER

Answered 2021-Jun-16 at 03:07

I had used document.getElementById('1').contentWindow.jQuery('#left').jstree(true); to get instance from iframe with id='1'. In order to listen to right iframe(with id='2') if any menu has been clicked, I used document.getElementById('2').contentWindow.jQuery('#right').on("changed.jstree",function(e,data){}). I get the instance of left iframe within this function. By using this instance, I has deselect previous selection, select current selection, and open children of selected menu.

index-12.html

Source https://stackoverflow.com/questions/67933193

QUESTION

How to Config Javascript ' script in Django?

Asked 2021-Jun-16 at 02:47

I built an app using Django 3.2.3., but when I try to settup my javascript code for the HTML, it doesn't work. I have read this post Django Static Files Development and follow the instructions, but it doesn't resolve my issue.

Also I couldn't find TEMPLATE_CONTEXT_PROCESSORS, according to this post no TEMPLATE_CONTEXT_PROCESSORS in django, from 1.7 Django and later, TEMPLATE_CONTEXT_PROCESSORS is the same as TEMPLATE to config django.core.context_processors.static but when I paste that code, turns in error saying django.core.context_processors.static doesn't exist.

I don't have idea why my javascript' script isn't working.

The configurations are the followings

Settings.py

...

ANSWER

Answered 2021-Jun-15 at 18:56

Run ‘python manage.py collectstatic’ and try again.

The way you handle static wrong, remove the static dirs in your INSTALLED_APPS out of STATIC_DIRS and set a STATIC_ROOT then collectstatic again.

Add the following as django documentation to your urls.py

Source https://stackoverflow.com/questions/67990678

QUESTION

Django modal bootstrap not displaying

Asked 2021-Jun-15 at 21:53

I have been blocked on this problem for several days. I have bootstrap 3.3.7 in the project root folder. I am rendering some buttons in the django template that should open modal windows when clicked. But the modal functionality is not working. I am following the examples shown on this page: https://www.quackit.com/bootstrap/bootstrap_3/tutorial/bootstrap_modal.cfm

Here is the template code:

...

ANSWER

Answered 2021-Jun-15 at 21:53

  {% load static %}
  

  
  {% load static %}
  

  
  
  // add this.

Source https://stackoverflow.com/questions/67993792

QUESTION

Using std::atomic with futex system call

Asked 2021-Jun-15 at 20:48

In C++20, we got the capability to sleep on atomic variables, waiting for their value to change. We do so by using the std::atomic::wait method.

Unfortunately, while wait has been standardized, wait_for and wait_until are not. Meaning that we cannot sleep on an atomic variable with a timeout.

Sleeping on an atomic variable is anyway implemented behind the scenes with WaitOnAddress on Windows and the futex system call on Linux.

Working around the above problem (no way to sleep on an atomic variable with a timeout), I could pass the memory address of an std::atomic to WaitOnAddress on Windows and it will (kinda) work with no UB, as the function gets void* as a parameter, and it's valid to cast std::atomic to void*

On Linux, it is unclear whether it's ok to mix std::atomic with futex. futex gets either a uint32_t* or a int32_t* (depending which manual you read), and casting std::atomic to u/int* is UB. On the other hand, the manual says

The uaddr argument points to the futex word. On all platforms, futexes are four-byte integers that must be aligned on a four- byte boundary. The operation to perform on the futex is specified in the futex_op argument; val is a value whose meaning and purpose depends on futex_op.

Hinting that alignas(4) std::atomic should work, and it doesn't matter which integer type is it is as long as the type has the size of 4 bytes and the alignment of 4.

Also, I have seen many places where this trick of combining atomics and futexes is implemented, including boost and TBB.

So what is the best way to sleep on an atomic variable with a timeout in a non UB way? Do we have to implement our own atomic class with OS primitives to achieve it correctly?

(Solutions like mixing atomics and condition variables exist, but sub-optimal)

...

ANSWER

Answered 2021-Jun-15 at 20:48

You shouldn't necessarily have to implement a full custom atomic API, it should actually be safe to simply pull out a pointer to the underlying data from the atomic and pass it to the system.

Since std::atomic does not offer some equivalent of native_handle like other synchronization primitives offer, you're going to be stuck doing some implementation-specific hacks to try to get it to interface with the native API.

For the most part, it's reasonably safe to assume that first member of these types in implementations will be the same as the T type -- at least for integral values ^[1]. This is an assurance that will make it possible to extract out this value.

... and casting std::atomic to u/int* is UB

This isn't actually the case.

std::atomic is guaranteed by the standard to be Standard-Layout Type. One helpful but often esoteric properties of standard layout types is that it is safe to reinterpret_cast a T to a value or reference of the first sub-object (e.g. the first member of the std::atomic).

As long as we can guarantee that the std::atomic contains only the u/int as a member (or at least, as its first member), then it's completely safe to extract out the type in this manner:

Source https://stackoverflow.com/questions/67034029

QUESTION

How to show and hide Div by mutiple Select form after submission

Asked 2021-Jun-15 at 19:59

I have two select form with submit button, I need to get the result of selected value for example

first select form having colours as an option and second contains another things.

and i have some items as div....red flower , red fish.

if i select red from first form its shows red value div and in second form if i select flower it should display red flower only but it's shows everything under the value red. And these all thing must work only when i submit the search button. I have attached jsfiddle below. Code:

...

ANSWER

Answered 2021-Jun-15 at 19:59

This is not so simple as I initially thought

Source https://stackoverflow.com/questions/67992054

QUESTION

jQuery command fails to create table when placed after select element

Asked 2021-Jun-15 at 14:22

I am new to jQuery and built this code that I modified to make it work right away in fiddle etc.

When the select changes, it is supposed to create a table but it does not do anything. However, if I place the

element on top of the select it works. Any idea why?

...

ANSWER

Answered 2021-Jun-15 at 14:21

Divs and selects aren't self-closing elements. They probably don't exist with respect to jQuery except where the browser attempts to close them for you. Fix that and it works.

Source https://stackoverflow.com/questions/67987878

QUESTION

on click clone li with different li class

Asked 2021-Jun-15 at 14:11

on click clone li with add it under li with a class clicked and on click on different li the previous clone should get removed

for eg: what i would like to achieve is on the click of

third

clone same li under ul with a class "clicked" third && when i click on other li like Fourth the old li with class clicked should get removed and new li of Fourth should get generated

...

ANSWER

Answered 2021-Jun-15 at 14:01

When you clone the element into the ul (the same, but doesn't matter), give it the clicked class with .addClass at the same time.

You can then remove all the ".clicked" elements when you add your next entry.

Source https://stackoverflow.com/questions/67987225

QUESTION

10-seconds count-up timer / vue.js

Asked 2021-Jun-15 at 12:38

...

ANSWER

Answered 2021-Jun-15 at 12:29

You're defining the interval like so:

Source https://stackoverflow.com/questions/67986107

QUESTION

How to find an HTML element in array of HTML siblings of one parent ReactJS

Asked 2021-Jun-15 at 12:20

This is my code:

...

ANSWER

Answered 2021-Jun-15 at 12:20

React is a framework that is state-based - the state informs the render of the DOM. Trying to use querySelector and its equivalent won't work like you think it will.

So here's an example of this working.

We set the state to be the index of the span (initially nothing).
handleClick which is attached to the div (or would be attached to your Scale element) grabs the data id attribute from the span and adds it to the state.
This triggers the page to re-render, the spans get rebuilt, and depending on the state the selected class gets added.

There is no other DOM manipulation going on. React does all that heavy lifting for you.

Source https://stackoverflow.com/questions/67985249

QUESTION

How to convert a pair of iterator into a view?

Asked 2021-Jun-15 at 11:41

I have a pair of iterator, and I would like to use ranges::views::filter(some_predicate) on it (with the pipe operator). AFAIU I should first convert my pair of iterator into a view. I tried to use ranges::subrange(first, last) to do so, but I’m getting horrible error messages.

Note1: I’m using C++14 and range-v3 version 0.9.1 (the last version compatible with gcc-5.5). If the solution differs when using C++17/20 and/or when using C++20 std::ranges, I’m also interested to know what changed.

Note2: I find the documentation of range-v3 severely lacking, so I’m using cppreference.com. If you know a better documentation, I’m very interested.

EDIT:

In my real code, I’m wrapping a java-style legacy iterator (that has a next() method instead of operator++/operator*. I’m wrapping them in a C++-compatible wrapper. Then I tried to convert that wrapper into a view, and finally filter it. I reproduce a minimal example on godbolt. This use iterator_range as suggested, but it still doesn’t compile (see the second edit below).

...

ANSWER

Answered 2021-Apr-08 at 16:24

In ranges-v3, there is iterator_range which you can use to wrap the iterators into a range object.

In C++20, you can use std::span to wrap those iterators into an range object

Source https://stackoverflow.com/questions/67007908

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install libs

Libs relies upon cmake build system. Lots of make targets will be available; the most important ones are:.
driver -> to build the kmod
bpf -> to build the eBPF probe
scap -> to build libscap
sinsp -> to build libsinsp (depends upon scap target)
scap-open -> to build a small libscap example to quickly test drivers (depends upon scap)
To build the kmod driver, you need your kernel headers installed. Again, checkout the Falco documentation for this step. Then it will be just a matter of running:.
To build the eBPF probe, you need clang and llvm packages. Then, issue:.

Support

Any contribution is incredibly helpful and warmly accepted; be it code, documentation, or just ideas, please feel free to share it! For a contribution guideline, refer to: https://github.com/falcosecurity/.github/blob/master/CONTRIBUTING.md.

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