diff options
| author | Paul Buetow <paul@buetow.org> | 2026-05-31 19:09:16 +0300 |
|---|---|---|
| committer | Paul Buetow <paul@buetow.org> | 2026-05-31 19:09:16 +0300 |
| commit | 8a1bf6236f6a525881c647fd881093b393436411 (patch) | |
| tree | 0fb537b847b6e5c72d2d3d98d7ce8fbc15330102 /internal/generate/classify.go | |
| parent | c3177bd82c16429c1bb246d19af76012479f0c01 (diff) | |
listxattrat: READ-classify return for xattr-list family consistency
listxattrat(2) (Linux 6.13+) returns the size in bytes of the list of
extended attribute names, exactly like listxattr/llistxattr/flistxattr,
but its exit was classified UNCLASSIFIED, so its read bytes were dropped
from I/O totals. Classify it as ReadClassified and regenerate the BPF
handler (ret_type now READ_CLASSIFIED). This mirrors the getxattrat fix
(task ku, commit c3177bd) and completes xattr-family consistency:
get-family and list-family are READ_CLASSIFIED while set-family and
remove-family stay UNCLASSIFIED (they return 0/-1).
Update the docs ReadClassified list and the retclassify expectation, and
add an ioworkload scenario plus integration test: the workload sets a
user xattr then lists names via the raw listxattrat(2) syscall with
AT_FDCWD, and the test asserts enter_listxattrat captures the file path
and accounts the returned name-list size as read bytes.
Task: r20
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Diffstat (limited to 'internal/generate/classify.go')
| -rw-r--r-- | internal/generate/classify.go | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/internal/generate/classify.go b/internal/generate/classify.go index 3746bd9..0735291 100644 --- a/internal/generate/classify.go +++ b/internal/generate/classify.go @@ -593,6 +593,10 @@ var retClassifications = map[string]RetClassification{ "getxattrat": ReadClassified, "lgetxattr": ReadClassified, "listxattr": ReadClassified, + // listxattrat (Linux 6.13+) returns the size in bytes of the list of + // extended attribute names, exactly like listxattr/llistxattr/flistxattr, + // so it is a read byte-count. + "listxattrat": ReadClassified, "llistxattr": ReadClassified, "pread64": ReadClassified, "preadv": ReadClassified, |