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pipe_exec

Execute ELF binaries from pipes & and terminals. This makes it possible to execute binaries that are not stored in a file system or for which the execute permission is not set and to run binaries directly from stdin; e.g. when piping gcc output or when downloading them via SSH.

It works by allocating an in-memory file via the memfd_create(2) syscall, copying all data from the executable there and finally executing it using the fexecve(3) syscall.

pipe_exec will first try to execute the file in place; e.g. pexec </bin/ls would not load ls into memory first.

Usage

$ cat `which date` | pexec -u
Sun Jul  3 21:09:36 UTC 2016

Installation

Install the required packages:

  • build-essential

And then compile the code:

make

To install copy the binaries to /usr/local/bin or execute this command which will perform the copy for you.

sudo make install

You can supply $PREFIX to use a different installation directory; the default prefix is /usr/local.

Maintenance log

2024-06-26 – Everything working as it should :)

License and Copyright

Copyright (C) 2016-2024 by Karolin Varner

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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Execute binaries from pipes, stdin and ttys

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