📡🐧 Linux kernel syscall implementation tracker
GPL-3.0 License
See mebeim/linux-syscalls for live syscall tables powered by Systrack.
Systrack is a tool to analyze Linux kernel images (vmlinux
) and extract
information about implemented syscalls. Given a vmlinux
image, Systrack can
extract syscall numbers, names, symbol names, definition locations within kernel
sources, function signatures, and more.
Systrack can configure and build kernels for all its supported architectures, and works best at analyzing kernels that it has configured and built by itself.
Systrack is available on PyPI, it requires Python 3.8+ and is installable through Pip:
pip install systrack
Building and installaing from source requires hatch
:
hatch build
pip install dist/systrack-XXX.whl
Systrack can mainly be used for two purposes: analyzing or building Linux
kernels. For more detailed information, see systrack --help
. For information
about supported architecture/ABI combinations, see systrack --arch help
.
Analyzing a kernel image can be done given a vmlinux
ELF with symbols,
and optionally also a kernel source directory (--kdir
). Systrack will
extract information about implemented syscalls from the symbol table present
in the given vmlinux
ELF, and if debugging information is present, it will
also extract file and line number information for syscall definitions.
Supplying --kdir
will help refine and/or correct the location of the
definitions, pointing Systrack to the checked-out sources for the right kernel
version (the same as the one to analyze).
Systrack can guess the architecture and ABI to analyze, but if the given
kernel was built for support for multiple ABIs, the right one can be selected
through --arch
.
systrack path/to/vmlinux
systrack --format json path/to/vmlinux
systrack --format html path/to/vmlinux
systrack --kdir path/to/linux_git_repo path/to/vmlinux
systrack --kdir path/to/linux_git_repo --arch x86-64-ia32 path/to/vmlinux
Building can be done through the --build
option. You will need to
provide a kernel source directory (--kdir
) and an architecture/ABI
combination to build for (--arch
).
systrack --build --kdir path/to/linux_git_repo --arch x86-64
Cross-compilation is possible specifying the correct toolchain prefix with
the --cross
option, which will set the CROSS_COMPILE
variable for the
kernel's Makefile
.
systrack --build --kdir path/to/linux_git_repo --arch arm64 --cross aarch64-linux-gnu-
External (non-Python) runtime dependencies are:
readelf
(from GNU binutils) is used to parse and extract ELFaddr2line
(from GNU binutils) is used to extract locationrg
(ripgrep) command is used for muchvmlinux
vmlinux-to-elf
can be used toCopyright © 2023-2024 Marco Bonelli. Licensed under the GNU General Public License v3.0.