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git/reftable/error.c
Han-Wen Nienhuys 0dd44584ab reftable: signal overflow
reflog entries have unbounded size. In theory, each log ('g') block in reftable
can have an arbitrary size, so the format allows for arbitrarily sized reflog
messages. However, in the implementation, we are not scaling the log blocks up
with the message, and writing a large message fails.

This triggers a failure for reftable in t7006-pager.sh.

Until this is fixed more structurally, report an error from within the reftable
library for easier debugging.

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-23 12:28:34 -08:00

44 lines
1.0 KiB
C

/*
Copyright 2020 Google LLC
Use of this source code is governed by a BSD-style
license that can be found in the LICENSE file or at
https://developers.google.com/open-source/licenses/bsd
*/
#include "reftable-error.h"
#include <stdio.h>
const char *reftable_error_str(int err)
{
static char buf[250];
switch (err) {
case REFTABLE_IO_ERROR:
return "I/O error";
case REFTABLE_FORMAT_ERROR:
return "corrupt reftable file";
case REFTABLE_NOT_EXIST_ERROR:
return "file does not exist";
case REFTABLE_LOCK_ERROR:
return "data is outdated";
case REFTABLE_API_ERROR:
return "misuse of the reftable API";
case REFTABLE_ZLIB_ERROR:
return "zlib failure";
case REFTABLE_NAME_CONFLICT:
return "file/directory conflict";
case REFTABLE_EMPTY_TABLE_ERROR:
return "wrote empty table";
case REFTABLE_REFNAME_ERROR:
return "invalid refname";
case REFTABLE_ENTRY_TOO_BIG_ERROR:
return "entry too large";
case -1:
return "general error";
default:
snprintf(buf, sizeof(buf), "unknown error code %d", err);
return buf;
}
}