[libgpiod][PATCH v2 0/5] core: provide information about the parent chip in line requests

[Bartosz Golaszewski <brgl@bgdev.pl>]

From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

While working on the DBus API, it occurred to me that while we can obtain
the list of requested offsets from a line request, this information lacks
context if we cannot get any information about the parent chip on which
the request was made.

We cannot reference the chip in any way as its lifetime is disconnected
from the request but we can at least provide the name of the chip used
to create the request providing some context for the offsets.

This series adds a new getter for struct gpiod_line_request and wrappers
for it for all bindings. This will be used in the upcoming DBus GPIO
manager code.

v1 -> v2:
- provide the chip name, not its filesystem path
- fix UNSAFE comments in rust bindings

Bartosz Golaszewski (5):
  core: provide gpiod_line_request_get_chip_name()
  tests: add a test-case for gpiod_line_request_get_chip_name()
  bindings: cxx: provide line_request::chip_name()
  bindings: python: provide the chip_name property in line_request
  bindings: rust: provide LineRequest::chip_name()

 bindings/cxx/gpiodcxx/line-request.hpp       |  6 ++++++
 bindings/cxx/line-request.cpp                | 10 +++++++++-
 bindings/cxx/tests/tests-line-request.cpp    |  6 ++++--
 bindings/python/gpiod/chip.py                |  1 +
 bindings/python/gpiod/ext/request.c          | 11 ++++++++++
 bindings/python/gpiod/line_request.py        | 12 +++++++++--
 bindings/python/tests/tests_line_request.py  | 13 +++++++-----
 bindings/rust/libgpiod/src/line_request.rs   | 16 +++++++++++++++
 bindings/rust/libgpiod/tests/line_request.rs | 14 +++++++++++++
 include/gpiod.h                              |  9 +++++++++
 lib/chip.c                                   |  7 ++++++-
 lib/internal.h                               |  3 ++-
 lib/line-request.c                           | 20 ++++++++++++++++++-
 tests/tests-line-request.c                   | 21 ++++++++++++++++++++
 14 files changed, 136 insertions(+), 13 deletions(-)

-- 
2.39.2