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| author | Dmitry Vyukov <dvyukov@google.com> | 2022-04-29 09:15:41 +0200 |
|---|---|---|
| committer | Dmitry Vyukov <dvyukov@google.com> | 2022-04-29 16:23:27 +0200 |
| commit | 44a5ca633e186c5836010366c515a4017836121b (patch) | |
| tree | 326b10c295737e0af8ce69ef8cbf2dbf4ecaccba /docs/syscall_descriptions_syntax.md | |
| parent | e9076525f882cc932139b6e813c39f3f0043c3f5 (diff) | |
pkg/ast, pkg/compiler: support per-file metadata
We have a bunch of hacks in syz-extract, syz-sysgen and syz-check
with respect to description files unsupported on some arches,
or that must not be part of make extract.
Add 2 meta attribtues to files:
meta noextract
Tells `make extract` to not extract constants for this file.
Though, `syz-extract` can still be invoked manually on this file.
meta arches["arch1", "arch2"]
Restricts this file only to the given set of architectures.
`make extract` and ``make generate` will not use it on other architectures.
Later we can potentially use meta attributes to specify git tree/commit
that must be used for extraction. Maybe something else.
Fixes #2754
Diffstat (limited to 'docs/syscall_descriptions_syntax.md')
| -rw-r--r-- | docs/syscall_descriptions_syntax.md | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/docs/syscall_descriptions_syntax.md b/docs/syscall_descriptions_syntax.md index a8f79b580..e2e2e2a17 100644 --- a/docs/syscall_descriptions_syntax.md +++ b/docs/syscall_descriptions_syntax.md @@ -391,6 +391,22 @@ foo(a ptr[in, array[int8, MY_PATH_MAX]]) define MY_PATH_MAX PATH_MAX + 2 ``` +## Meta + +Description files can also contain `meta` directives that specify meta-information for the whole file. + +``` +meta noextract +``` +Tells `make extract` to not extract constants for this file. +Though, `syz-extract` can still be invoked manually on this file. + +``` +meta arches["arch1", "arch2"] +``` +Restricts this file only to the given set of architectures. +`make extract` and ``make generate` will not use it on other architectures. + ## Misc Description files also contain `include` directives that refer to Linux kernel header files, |