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34c17b840d
We're including a couple of standard headers like <stdint.h> in a bunch
of locations, which makes it hard for a project to plug in their own
logic for making required functionality available. For us this is for
example via "compat/posix.h", which already includes all of the system
headers relevant to us.
Introduce a new "reftable-system.h" header that allows projects to
provide their own headers. This new header is supposed to contain all
the project-specific bits to provide the POSIX-like environment, and some
additional supporting code. With this change, we thus have the following
split in our system-specific code:
- "reftable/reftable-system.h" is the project-specific header that
provides a POSIX-like environment. Every project is expected to
provide their own implementation.
- "reftable/system.h" contains the project-independent definition of
the interfaces that a project needs to implement. This file should
not be touched by a project.
- "reftable/system.c" contains the project-specific implementation of
the interfaces defined in "system.h". Again, every project is
expected to provide their own implementation.
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
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* Copyright 2020 Google LLC
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*
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* Use of this source code is governed by a BSD-style
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* license that can be found in the LICENSE file or at
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* https://developers.google.com/open-source/licenses/bsd
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*/
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#ifndef REFTABLE_ERROR_H
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#define REFTABLE_ERROR_H
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#include "reftable-system.h"
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/*
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* Errors in reftable calls are signaled with negative integer return values. 0
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* means success.
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*/
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enum reftable_error {
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/* Unexpected file system behavior */
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REFTABLE_IO_ERROR = -2,
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/* Format inconsistency on reading data */
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REFTABLE_FORMAT_ERROR = -3,
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/* File does not exist. Returned from block_source_from_file(), because
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* it needs special handling in stack.
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*/
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REFTABLE_NOT_EXIST_ERROR = -4,
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/* Trying to access locked data. */
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REFTABLE_LOCK_ERROR = -5,
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/* Misuse of the API:
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* - on writing a record with NULL refname.
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* - on writing a record before setting the writer limits.
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* - on writing a reftable_ref_record outside the table limits
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* - on writing a ref or log record before the stack's
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* next_update_inde*x
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* - on writing a log record with multiline message with
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* exact_log_message unset
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* - on reading a reftable_ref_record from log iterator, or vice versa.
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*
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* When a call misuses the API, the internal state of the library is
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* kept unchanged.
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*/
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REFTABLE_API_ERROR = -6,
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/* Decompression error */
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REFTABLE_ZLIB_ERROR = -7,
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/* Wrote a table without blocks. */
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REFTABLE_EMPTY_TABLE_ERROR = -8,
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/* Invalid ref name. */
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REFTABLE_REFNAME_ERROR = -10,
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/* Entry does not fit. This can happen when writing outsize reflog
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messages. */
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REFTABLE_ENTRY_TOO_BIG_ERROR = -11,
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/* Trying to write out-of-date data. */
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REFTABLE_OUTDATED_ERROR = -12,
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/* An allocation has failed due to an out-of-memory situation. */
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REFTABLE_OUT_OF_MEMORY_ERROR = -13,
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};
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/* convert the numeric error code to a string. The string should not be
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* deallocated. */
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const char *reftable_error_str(int err);
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#endif
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