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Diffstat (limited to 'docs/CODING_STYLE.md')
| -rw-r--r-- | docs/CODING_STYLE.md | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/docs/CODING_STYLE.md b/docs/CODING_STYLE.md index 1a044c023a..f76525205f 100644 --- a/docs/CODING_STYLE.md +++ b/docs/CODING_STYLE.md @@ -613,6 +613,15 @@ SPDX-License-Identifier: LGPL-2.1-or-later effect on the regular file. If in doubt consider turning off `O_NONBLOCK` again after opening. +- These days we generally prefer `openat()`-style file APIs, i.e. APIs that + accept a combination of file descriptor and path string, and where the path + (if not absolute) is considered relative to the specified file + descriptor. When implementing library calls in similar style, please make + sure to imply `AT_EMPTY_PATH` if an empty or `NULL` path argument is + specified (and convert that latter to an empty string). This differs from the + underlying kernel semantics, where `AT_EMPTY_PATH` must always be specified + explicitly, and `NULL` is not acepted as path. + ## Command Line - If you parse a command line, and want to store the parsed parameters in |