mirror of
https://git.proxmox.com/git/libgit2
synced 2025-05-11 09:47:45 +00:00
dfda2f68ea
Having this cache and giving them out goes against our multithreading guarantees and it makes it impossible to use submodules in a multi-threaded environment, as any thread can ask for a refresh which may reallocate some string in the submodule struct which we've accessed in a different one via a getter. This makes the submodules behave more like remotes, where each object is created upon request and not shared except explicitly by the user. This means that some tests won't pass yet, as they assume they can affect the submodule objects in the cache and that will affect later operations.
216 lines
6.2 KiB
C
216 lines
6.2 KiB
C
/*
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* Copyright (C) the libgit2 contributors. All rights reserved.
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*
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* This file is part of libgit2, distributed under the GNU GPL v2 with
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* a Linking Exception. For full terms see the included COPYING file.
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*/
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#ifndef INCLUDE_repository_h__
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#define INCLUDE_repository_h__
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#include "git2/common.h"
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#include "git2/oid.h"
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#include "git2/odb.h"
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#include "git2/repository.h"
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#include "git2/object.h"
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#include "git2/config.h"
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#include "array.h"
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#include "cache.h"
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#include "refs.h"
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#include "buffer.h"
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#include "object.h"
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#include "attrcache.h"
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#include "submodule.h"
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#include "diff_driver.h"
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#define DOT_GIT ".git"
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#define GIT_DIR DOT_GIT "/"
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#define GIT_DIR_MODE 0755
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#define GIT_BARE_DIR_MODE 0777
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/* Default DOS-compatible 8.3 "short name" for a git repository, "GIT~1" */
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#define GIT_DIR_SHORTNAME "GIT~1"
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/** Cvar cache identifiers */
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typedef enum {
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GIT_CVAR_AUTO_CRLF = 0, /* core.autocrlf */
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GIT_CVAR_EOL, /* core.eol */
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GIT_CVAR_SYMLINKS, /* core.symlinks */
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GIT_CVAR_IGNORECASE, /* core.ignorecase */
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GIT_CVAR_FILEMODE, /* core.filemode */
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GIT_CVAR_IGNORESTAT, /* core.ignorestat */
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GIT_CVAR_TRUSTCTIME, /* core.trustctime */
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GIT_CVAR_ABBREV, /* core.abbrev */
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GIT_CVAR_PRECOMPOSE, /* core.precomposeunicode */
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GIT_CVAR_SAFE_CRLF, /* core.safecrlf */
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GIT_CVAR_LOGALLREFUPDATES, /* core.logallrefupdates */
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GIT_CVAR_PROTECTHFS, /* core.protectHFS */
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GIT_CVAR_PROTECTNTFS, /* core.protectNTFS */
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GIT_CVAR_CACHE_MAX
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} git_cvar_cached;
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/**
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* CVAR value enumerations
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*
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* These are the values that are actually stored in the cvar cache, instead
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* of their string equivalents. These values are internal and symbolic;
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* make sure that none of them is set to `-1`, since that is the unique
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* identifier for "not cached"
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*/
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typedef enum {
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/* The value hasn't been loaded from the cache yet */
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GIT_CVAR_NOT_CACHED = -1,
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/* core.safecrlf: false, 'fail', 'warn' */
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GIT_SAFE_CRLF_FALSE = 0,
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GIT_SAFE_CRLF_FAIL = 1,
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GIT_SAFE_CRLF_WARN = 2,
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/* core.autocrlf: false, true, 'input; */
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GIT_AUTO_CRLF_FALSE = 0,
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GIT_AUTO_CRLF_TRUE = 1,
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GIT_AUTO_CRLF_INPUT = 2,
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GIT_AUTO_CRLF_DEFAULT = GIT_AUTO_CRLF_FALSE,
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/* core.eol: unset, 'crlf', 'lf', 'native' */
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GIT_EOL_UNSET = 0,
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GIT_EOL_CRLF = 1,
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GIT_EOL_LF = 2,
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#ifdef GIT_WIN32
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GIT_EOL_NATIVE = GIT_EOL_CRLF,
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#else
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GIT_EOL_NATIVE = GIT_EOL_LF,
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#endif
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GIT_EOL_DEFAULT = GIT_EOL_NATIVE,
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/* core.symlinks: bool */
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GIT_SYMLINKS_DEFAULT = GIT_CVAR_TRUE,
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/* core.ignorecase */
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GIT_IGNORECASE_DEFAULT = GIT_CVAR_FALSE,
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/* core.filemode */
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GIT_FILEMODE_DEFAULT = GIT_CVAR_TRUE,
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/* core.ignorestat */
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GIT_IGNORESTAT_DEFAULT = GIT_CVAR_FALSE,
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/* core.trustctime */
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GIT_TRUSTCTIME_DEFAULT = GIT_CVAR_TRUE,
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/* core.abbrev */
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GIT_ABBREV_DEFAULT = 7,
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/* core.precomposeunicode */
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GIT_PRECOMPOSE_DEFAULT = GIT_CVAR_FALSE,
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/* core.safecrlf */
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GIT_SAFE_CRLF_DEFAULT = GIT_CVAR_FALSE,
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/* core.logallrefupdates */
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GIT_LOGALLREFUPDATES_UNSET = 2,
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GIT_LOGALLREFUPDATES_DEFAULT = GIT_LOGALLREFUPDATES_UNSET,
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/* core.protectHFS */
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GIT_PROTECTHFS_DEFAULT = GIT_CVAR_FALSE,
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/* core.protectNTFS */
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GIT_PROTECTNTFS_DEFAULT = GIT_CVAR_FALSE,
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} git_cvar_value;
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/* internal repository init flags */
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enum {
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GIT_REPOSITORY_INIT__HAS_DOTGIT = (1u << 16),
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GIT_REPOSITORY_INIT__NATURAL_WD = (1u << 17),
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GIT_REPOSITORY_INIT__IS_REINIT = (1u << 18),
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};
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/** Internal structure for repository object */
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struct git_repository {
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git_odb *_odb;
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git_refdb *_refdb;
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git_config *_config;
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git_index *_index;
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git_cache objects;
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git_attr_cache *attrcache;
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git_diff_driver_registry *diff_drivers;
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char *path_repository;
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char *path_gitlink;
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char *workdir;
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char *namespace;
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char *ident_name;
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char *ident_email;
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git_array_t(git_buf) reserved_names;
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unsigned is_bare:1;
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unsigned int lru_counter;
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git_atomic attr_session_key;
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git_cvar_value cvar_cache[GIT_CVAR_CACHE_MAX];
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};
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GIT_INLINE(git_attr_cache *) git_repository_attr_cache(git_repository *repo)
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{
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return repo->attrcache;
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}
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int git_repository_head_tree(git_tree **tree, git_repository *repo);
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/*
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* Weak pointers to repository internals.
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*
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* The returned pointers do not need to be freed. Do not keep
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* permanent references to these (i.e. between API calls), since they may
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* become invalidated if the user replaces a repository internal.
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*/
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int git_repository_config__weakptr(git_config **out, git_repository *repo);
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int git_repository_odb__weakptr(git_odb **out, git_repository *repo);
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int git_repository_refdb__weakptr(git_refdb **out, git_repository *repo);
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int git_repository_index__weakptr(git_index **out, git_repository *repo);
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/*
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* CVAR cache
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*
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* Efficient access to the most used config variables of a repository.
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* The cache is cleared every time the config backend is replaced.
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*/
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int git_repository__cvar(int *out, git_repository *repo, git_cvar_cached cvar);
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void git_repository__cvar_cache_clear(git_repository *repo);
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GIT_INLINE(int) git_repository__ensure_not_bare(
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git_repository *repo,
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const char *operation_name)
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{
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if (!git_repository_is_bare(repo))
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return 0;
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giterr_set(
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GITERR_REPOSITORY,
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"Cannot %s. This operation is not allowed against bare repositories.",
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operation_name);
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return GIT_EBAREREPO;
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}
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int git_repository__set_orig_head(git_repository *repo, const git_oid *orig_head);
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int git_repository__cleanup_files(git_repository *repo, const char *files[], size_t files_len);
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/* The default "reserved names" for a repository */
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extern git_buf git_repository__reserved_names_win32[];
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extern size_t git_repository__reserved_names_win32_len;
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extern git_buf git_repository__reserved_names_posix[];
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extern size_t git_repository__reserved_names_posix_len;
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/*
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* Gets any "reserved names" in the repository. This will return paths
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* that should not be allowed in the repository (like ".git") to avoid
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* conflicting with the repository path, or with alternate mechanisms to
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* the repository path (eg, "GIT~1"). Every attempt will be made to look
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* up all possible reserved names - if there was a conflict for the shortname
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* GIT~1, for example, this function will try to look up the alternate
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* shortname. If that fails, this function returns false, but out and outlen
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* will still be populated with good defaults.
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*/
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bool git_repository__reserved_names(
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git_buf **out, size_t *outlen, git_repository *repo, bool include_ntfs);
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#endif
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