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refactor(cli): move decompression status action policy to Rust

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The decompression callback in fileio used to classify result statuses and
select its display action with a C switch. That left scalar result policy in
the C frontend even though Rust already owns the decompression dispatch and
result classification, and it coupled the C callback to a diagnostic enum.

Rust now exposes an ABI-checked status-action classifier. It keeps the
original action ordering and preserves silent handling for statuses that have
no display diagnostic, while the C callback retains the exact diagnostic
strings, source-name formatting, and display operation. Invalid inputs map to
a silent fallback action so the public callback remains behavior-compatible.
Focused Rust tests cover every status class, invalid values, and the exported
ABI result.

Test Plan:
- `git diff --cached --check` -- passed
- `rustfmt --edition 2021 --check rust/src/fileio_asyncio.rs` -- passed
- Full capped Rust/native verification remains pending until the parallel
  compression and decompression seams are integrated.
This commit is contained in:
ddidderr
2026-07-21 06:50:25 +02:00
parent c075a7b2d9
commit bc3c3b1ac6
2 changed files with 86 additions and 56 deletions
Download Patch File Download Diff File Expand all files Collapse all files
programs/fileio.c
+20 -15
View File
@@ -472,14 +472,17 @@ enum {
FIO_RUST_DECOMPRESS_PASS_THROUGH_ERROR = 9,
FIO_RUST_DECOMPRESS_ZSTD_UNSUPPORTED = 10
};
/* Rust owns the decompression status-to-action policy. C keeps the exact
* diagnostic strings and display callback around the resulting action. */
enum {
FIO_RUST_DECOMPRESS_DIAGNOSTIC_NONE = 0,
FIO_RUST_DECOMPRESS_DIAGNOSTIC_EMPTY_INPUT = 1,
FIO_RUST_DECOMPRESS_DIAGNOSTIC_SHORT_INPUT = 2,
FIO_RUST_DECOMPRESS_DIAGNOSTIC_GZIP_UNSUPPORTED = 3,
FIO_RUST_DECOMPRESS_DIAGNOSTIC_LZMA_UNSUPPORTED = 4,
FIO_RUST_DECOMPRESS_DIAGNOSTIC_LZ4_UNSUPPORTED = 5,
FIO_RUST_DECOMPRESS_DIAGNOSTIC_UNSUPPORTED_FORMAT = 6
FIO_RUST_DECOMPRESS_ACTION_NOOP = 0,
FIO_RUST_DECOMPRESS_ACTION_EMPTY_INPUT = 1,
FIO_RUST_DECOMPRESS_ACTION_SHORT_INPUT = 2,
FIO_RUST_DECOMPRESS_ACTION_GZIP_UNSUPPORTED = 3,
FIO_RUST_DECOMPRESS_ACTION_LZMA_UNSUPPORTED = 4,
FIO_RUST_DECOMPRESS_ACTION_LZ4_UNSUPPORTED = 5,
FIO_RUST_DECOMPRESS_ACTION_UNSUPPORTED_FORMAT = 6,
FIO_RUST_DECOMPRESS_ACTION_INVALID = 7
};
typedef int (*FIO_rust_decompress_frame_fn)(void* opaque,
const char* srcFileName,
@@ -513,7 +516,7 @@ int FIO_rust_finishDecompressFrames(int status,
const char* srcFileName,
U64 decodedSize,
const FIO_rust_decompress_callbacks_t* callbacks);
int FIO_rust_decompressStatusDiagnostic(int status);
int FIO_rust_decompressStatusAction(int status);
int FIO_rust_decompressPassThroughPolicy(int passThrough,
int overwrite,
int destinationIsStdout);
@@ -4233,25 +4236,27 @@ static void FIO_rust_decompressStatusCallback(void* opaque,
const char* srcFileName)
{
(void)opaque;
switch (FIO_rust_decompressStatusDiagnostic(status)) {
case FIO_RUST_DECOMPRESS_DIAGNOSTIC_EMPTY_INPUT:
switch (FIO_rust_decompressStatusAction(status)) {
case FIO_RUST_DECOMPRESS_ACTION_EMPTY_INPUT:
DISPLAYLEVEL(1, "zstd: %s: unexpected end of file \n", srcFileName);
break;
case FIO_RUST_DECOMPRESS_DIAGNOSTIC_SHORT_INPUT:
case FIO_RUST_DECOMPRESS_ACTION_SHORT_INPUT:
DISPLAYLEVEL(1, "zstd: %s: unknown header \n", srcFileName);
break;
case FIO_RUST_DECOMPRESS_DIAGNOSTIC_GZIP_UNSUPPORTED:
case FIO_RUST_DECOMPRESS_ACTION_GZIP_UNSUPPORTED:
DISPLAYLEVEL(1, "zstd: %s: gzip file cannot be uncompressed (zstd compiled without HAVE_ZLIB) -- ignored \n", srcFileName);
break;
case FIO_RUST_DECOMPRESS_DIAGNOSTIC_LZMA_UNSUPPORTED:
case FIO_RUST_DECOMPRESS_ACTION_LZMA_UNSUPPORTED:
DISPLAYLEVEL(1, "zstd: %s: xz/lzma file cannot be uncompressed (zstd compiled without HAVE_LZMA) -- ignored \n", srcFileName);
break;
case FIO_RUST_DECOMPRESS_DIAGNOSTIC_LZ4_UNSUPPORTED:
case FIO_RUST_DECOMPRESS_ACTION_LZ4_UNSUPPORTED:
DISPLAYLEVEL(1, "zstd: %s: lz4 file cannot be uncompressed (zstd compiled without HAVE_LZ4) -- ignored \n", srcFileName);
break;
case FIO_RUST_DECOMPRESS_DIAGNOSTIC_UNSUPPORTED_FORMAT:
case FIO_RUST_DECOMPRESS_ACTION_UNSUPPORTED_FORMAT:
DISPLAYLEVEL(1, "zstd: %s: unsupported format \n", srcFileName);
break;
case FIO_RUST_DECOMPRESS_ACTION_NOOP:
case FIO_RUST_DECOMPRESS_ACTION_INVALID:
default:
break;
}