For processes we find in a podman container, we can sniff the libpod
cgroup scope. Using that we can translate into the podman layer that
contains the files.
With that, future work could find the proper .so when resolving based on
alternate roots for the process.
While I'm not thrilled to add new frame types for every sort of thing, I
think having this will be relatively useful so we can improve decoding
operations.
This adds SysprofCapturePidRoot which lets us specify a root directory
on the host system for which is the real root (/) of the PID. This can
be useful when reconstructing overlays for containers and you need to
direct access to alternate roots.
The layer gives us some ability to try to deal with overlayfs, albeit at
a very rudimentary level. In most cases I anticipate we just deal with
the main root and ignore overlays until necessary.
It turns out that /proc/cpuinfo changes out from under us rather frequently
and that makes it a bad use-case for a unit test. This uses meson.build
which presumably wont change while running the tests.
This helps some annoying cases where we keep checking over and over for
each CPU, procfile, etc during startup.
It makes the tool less useful on systems without D-Bus, but let's be
honest, profiling is a Linux only game for Sysprof.
All three of these structs are already defined in
`sysprof-capture-types.h`, which is included from these three headers.
Drop the duplicate definition to silence the Clang warning:
```
In file included from /opt/gnome/install/include/sysprof-4/sysprof-capture.h:63:
/opt/gnome/install/include/sysprof-4/sysprof-capture-cursor.h:67:38: warning: redefinition of typedef 'SysprofCaptureCursor' is a C11 feature [-Wtypedef-redefinition]
typedef struct _SysprofCaptureCursor SysprofCaptureCursor;
^
/opt/gnome/install/include/sysprof-4/sysprof-capture-types.h:98:41: note: previous definition is here
typedef struct _SysprofCaptureCursor SysprofCaptureCursor;
```
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
When dealing with Btrfs subvolumes, we might need to translate the src
directory to the proper subvolume. This isn't exactly perfect, as I could
imagine some scenarios that might break things here, but it seems to be
good enough to get decoding working on Fedora 33 with a default btrfs
installation.
If you have more creative setups, I'd be happy to see some testing there.
You can use ./src/tests/test-mountinfo /proc/self/mountinfo /some/path.so
to get information on what was resolved.
Fixes#34
This fix error when gio is a subproject, when there is pc file
assotiated for objects in libraries_private meson automatically promote
them to requires.
Also remove some values that are already the default.
This allows Meson to associate the pkg-config module with the "main"
library that it represents, in an unambiguous way.
Signed-off-by: Simon McVittie <smcv@debian.org>
