https://github.com/sharvil/flingfd

A tiny library to send file descriptors across processes
https://github.com/sharvil/flingfd

c descriptor file linux

Last synced: about 2 months ago
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A tiny library to send file descriptors across processes

• Host: GitHub
• URL: https://github.com/sharvil/flingfd
• Owner: sharvil
• License: other
• Created: 2013-12-21T07:09:47.000Z (almost 11 years ago)
• Default Branch: master
• Last Pushed: 2017-11-25T18:38:40.000Z (almost 7 years ago)
• Last Synced: 2024-05-28T12:51:41.767Z (4 months ago)
• Topics: c, descriptor, file, linux
• Language: C
• Size: 7.81 KB
• Stars: 167
• Watchers: 12
• Forks: 15
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# flingfd

flingfd is a small, standalone C library to pass file descriptors across processes on Linux.

## Installation

By default, flingfd installs in `/usr/local`. If you want to change where it gets installed, edit the `PREFIX` in the Makefile.

```

  $ make && sudo make install

```

## Documentation

The library consists of two functions declared in `flingfd.h`:

```c

  bool flingfd_simple_send(const char *path, int fd);

  int flingfd_simple_recv(const char *path);

```

When you want to send a file descriptor, call `flingfd_simple_send` and receive it in the other process with `flingfd_simple_recv`. Make sure you use the same `path` argument in both processes -- that determines which process gets the file descriptor.

Here's an example of sending `stdout` to another process:

```c

  #include 

  void send_my_stdout() {

    int fd = fileno(stdout);

    flingfd_simple_send("/tmp/some_unique_path", fd);

  }

```

And here's the other process writing to the sender's `stdout`:

```c

  #include 

  void write_to_their_stdout() {

    int fd = flingfd_simple_recv("/tmp/some_unique_path");

    write(fd, "Hello world\n", 12);

  }

```

When you're done writing your code, link against the library with `-lflingfd`.

## Bindings

* Python - https://github.com/soulseekah/pyflingfd

## License

Apache 2.0