drgn is currently licensed as GPLv3+. Part of the long term vision for
drgn is that other projects can use it as a library providing
programmatic interfaces for debugger functionality. A more permissive
license is better suited to this goal. We decided on LGPLv2.1+ as a good
balance between software freedom and permissiveness.
All contributors not employed by Meta were contacted via email and
consented to the license change. The only exception was the author of
commit c4fbf7e589 ("libdrgn: fix for compilation error"), who did not
respond. That commit reverted a single line of code to one originally
written by me in commit 640b1c011d ("libdrgn: embed DWARF index in
DWARF info cache").
Signed-off-by: Omar Sandoval <osandov@osandov.com>
This still isn't enough to be fully generic since since some
architectures don't support kexec_file_load, especially on older
kernels, and some architectures can't use the vmlinuz directly (e.g.,
AArch64 may need it to be decompressed). But, this is at least cleaner
than hard-coding the number for x86-64.
Signed-off-by: Omar Sandoval <osandov@osandov.com>
The syscall table will be useful outside of the test cases themselves.
Additionally, definining it in terms of the "normalized" machine name is
a little easier. The normalized machine name will be useful elsewhere,
too.
Signed-off-by: Omar Sandoval <osandov@osandov.com>
As noted by commit 738261290f ("CI: temporarily disable vmtest"),
vmtest was generating too much traffic to the Dropbox shared folder that
hosted vmtest kernels. Instead, we can store kernel packages as GitHub
release assets. Update the code for downloading and uploading vmtest
assets, and also add a scheduled GitHub action to build new kernels
every Monday so I don't have to remember to do it manually.
This also drops vmtest support for 5.6-5.9, which now fail to build with
newer binutils due to the issue fixed in Linux kernel commit
1d489151e9f9 ("objtool: Don't fail on missing symbol table").
Signed-off-by: Omar Sandoval <osandov@osandov.com>
drgn was originally my side project, but for awhile now it's also been
my work project. Update the copyright headers to reflect this, and add a
copyright header to various files that were missing it.
Add an verrevcmp() function based on the coreutils implementation (which
comes from gnulib, which is derived from the implementation in dpkg).
This will be used by vmtest.
