17.7.2.1. /proc/version

Its data is shared with uname(), which is a POSIX C function and has a Linux syscall to back it up.

Where the data comes from and how to modify it:

In this repo, leaking host information, and to make builds more reproducible, we are setting:

  • user and date to dummy values with KBUILD_BUILD_USER and KBUILD_BUILD_TIMESTAMP

  • hostname to the kernel git commit with KBUILD_BUILD_HOST and KBUILD_BUILD_VERSION

A sample result is:

Linux version 4.19.0-dirty (lkmc@84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d) (gcc version 6.4.0 (Buildroot 2018.05-00002-gbc60382b8f)) #1 SMP Thu Jan 1 00:00:00 UTC 1970