From c8bae7493d2f2910b57f13ded012e86bdcfb0532 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 16:47:53 +0200 Subject: Adding upstream version 1:2.39.2. Signed-off-by: Daniel Baumann --- environment.c | 425 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 425 insertions(+) create mode 100644 environment.c (limited to 'environment.c') diff --git a/environment.c b/environment.c new file mode 100644 index 0000000..18d042b --- /dev/null +++ b/environment.c @@ -0,0 +1,425 @@ +/* + * We put all the git config variables in this same object + * file, so that programs can link against the config parser + * without having to link against all the rest of git. + * + * In particular, no need to bring in libz etc unless needed, + * even if you might want to know where the git directory etc + * are. + */ +#include "cache.h" +#include "branch.h" +#include "environment.h" +#include "repository.h" +#include "config.h" +#include "refs.h" +#include "fmt-merge-msg.h" +#include "commit.h" +#include "strvec.h" +#include "object-store.h" +#include "tmp-objdir.h" +#include "chdir-notify.h" +#include "shallow.h" + +int trust_executable_bit = 1; +int trust_ctime = 1; +int check_stat = 1; +int has_symlinks = 1; +int minimum_abbrev = 4, default_abbrev = -1; +int ignore_case; +int assume_unchanged; +int prefer_symlink_refs; +int is_bare_repository_cfg = -1; /* unspecified */ +int warn_ambiguous_refs = 1; +int warn_on_object_refname_ambiguity = 1; +int repository_format_precious_objects; +int repository_format_worktree_config; +const char *git_commit_encoding; +const char *git_log_output_encoding; +char *apply_default_whitespace; +char *apply_default_ignorewhitespace; +const char *git_attributes_file; +const char *git_hooks_path; +int zlib_compression_level = Z_BEST_SPEED; +int pack_compression_level = Z_DEFAULT_COMPRESSION; +int fsync_object_files = -1; +int use_fsync = -1; +enum fsync_method fsync_method = FSYNC_METHOD_DEFAULT; +enum fsync_component fsync_components = FSYNC_COMPONENTS_DEFAULT; +size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE; +size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT; +size_t delta_base_cache_limit = 96 * 1024 * 1024; +unsigned long big_file_threshold = 512 * 1024 * 1024; +int pager_use_color = 1; +const char *editor_program; +const char *askpass_program; +const char *excludes_file; +enum auto_crlf auto_crlf = AUTO_CRLF_FALSE; +int read_replace_refs = 1; +enum eol core_eol = EOL_UNSET; +int global_conv_flags_eol = CONV_EOL_RNDTRP_WARN; +char *check_roundtrip_encoding = "SHIFT-JIS"; +unsigned whitespace_rule_cfg = WS_DEFAULT_RULE; +enum branch_track git_branch_track = BRANCH_TRACK_REMOTE; +enum rebase_setup_type autorebase = AUTOREBASE_NEVER; +enum push_default_type push_default = PUSH_DEFAULT_UNSPECIFIED; +#ifndef OBJECT_CREATION_MODE +#define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS +#endif +enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE; +char *notes_ref_name; +int grafts_replace_parents = 1; +int core_apply_sparse_checkout; +int core_sparse_checkout_cone; +int sparse_expect_files_outside_of_patterns; +int merge_log_config = -1; +int precomposed_unicode = -1; /* see probe_utf8_pathname_composition() */ +unsigned long pack_size_limit_cfg; +enum log_refs_config log_all_ref_updates = LOG_REFS_UNSET; + +#ifndef PROTECT_HFS_DEFAULT +#define PROTECT_HFS_DEFAULT 0 +#endif +int protect_hfs = PROTECT_HFS_DEFAULT; + +#ifndef PROTECT_NTFS_DEFAULT +#define PROTECT_NTFS_DEFAULT 1 +#endif +int protect_ntfs = PROTECT_NTFS_DEFAULT; + +/* + * The character that begins a commented line in user-editable file + * that is subject to stripspace. + */ +char comment_line_char = '#'; +int auto_comment_line_char; + +/* Parallel index stat data preload? */ +int core_preload_index = 1; + +/* This is set by setup_git_dir_gently() and/or git_default_config() */ +char *git_work_tree_cfg; + +static char *git_namespace; + +static char *super_prefix; + +/* + * Repository-local GIT_* environment variables; see cache.h for details. + */ +const char * const local_repo_env[] = { + ALTERNATE_DB_ENVIRONMENT, + CONFIG_ENVIRONMENT, + CONFIG_DATA_ENVIRONMENT, + CONFIG_COUNT_ENVIRONMENT, + DB_ENVIRONMENT, + GIT_DIR_ENVIRONMENT, + GIT_WORK_TREE_ENVIRONMENT, + GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, + GRAFT_ENVIRONMENT, + INDEX_ENVIRONMENT, + NO_REPLACE_OBJECTS_ENVIRONMENT, + GIT_REPLACE_REF_BASE_ENVIRONMENT, + GIT_PREFIX_ENVIRONMENT, + GIT_SUPER_PREFIX_ENVIRONMENT, + GIT_SHALLOW_FILE_ENVIRONMENT, + GIT_COMMON_DIR_ENVIRONMENT, + NULL +}; + +static char *expand_namespace(const char *raw_namespace) +{ + struct strbuf buf = STRBUF_INIT; + struct strbuf **components, **c; + + if (!raw_namespace || !*raw_namespace) + return xstrdup(""); + + strbuf_addstr(&buf, raw_namespace); + components = strbuf_split(&buf, '/'); + strbuf_reset(&buf); + for (c = components; *c; c++) + if (strcmp((*c)->buf, "/") != 0) + strbuf_addf(&buf, "refs/namespaces/%s", (*c)->buf); + strbuf_list_free(components); + if (check_refname_format(buf.buf, 0)) + die(_("bad git namespace path \"%s\""), raw_namespace); + strbuf_addch(&buf, '/'); + return strbuf_detach(&buf, NULL); +} + +const char *getenv_safe(struct strvec *argv, const char *name) +{ + const char *value = getenv(name); + + if (!value) + return NULL; + + strvec_push(argv, value); + return argv->v[argv->nr - 1]; +} + +void setup_git_env(const char *git_dir) +{ + char *git_replace_ref_base; + const char *shallow_file; + const char *replace_ref_base; + struct set_gitdir_args args = { NULL }; + struct strvec to_free = STRVEC_INIT; + + args.commondir = getenv_safe(&to_free, GIT_COMMON_DIR_ENVIRONMENT); + args.object_dir = getenv_safe(&to_free, DB_ENVIRONMENT); + args.graft_file = getenv_safe(&to_free, GRAFT_ENVIRONMENT); + args.index_file = getenv_safe(&to_free, INDEX_ENVIRONMENT); + args.alternate_db = getenv_safe(&to_free, ALTERNATE_DB_ENVIRONMENT); + if (getenv(GIT_QUARANTINE_ENVIRONMENT)) { + args.disable_ref_updates = 1; + } + + repo_set_gitdir(the_repository, git_dir, &args); + strvec_clear(&to_free); + + if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT)) + read_replace_refs = 0; + replace_ref_base = getenv(GIT_REPLACE_REF_BASE_ENVIRONMENT); + git_replace_ref_base = xstrdup(replace_ref_base ? replace_ref_base + : "refs/replace/"); + update_ref_namespace(NAMESPACE_REPLACE, git_replace_ref_base); + + free(git_namespace); + git_namespace = expand_namespace(getenv(GIT_NAMESPACE_ENVIRONMENT)); + shallow_file = getenv(GIT_SHALLOW_FILE_ENVIRONMENT); + if (shallow_file) + set_alternate_shallow_file(the_repository, shallow_file, 0); +} + +int is_bare_repository(void) +{ + /* if core.bare is not 'false', let's see if there is a work tree */ + return is_bare_repository_cfg && !get_git_work_tree(); +} + +int have_git_dir(void) +{ + return startup_info->have_repository + || the_repository->gitdir; +} + +const char *get_git_dir(void) +{ + if (!the_repository->gitdir) + BUG("git environment hasn't been setup"); + return the_repository->gitdir; +} + +const char *get_git_common_dir(void) +{ + if (!the_repository->commondir) + BUG("git environment hasn't been setup"); + return the_repository->commondir; +} + +const char *get_git_namespace(void) +{ + if (!git_namespace) + BUG("git environment hasn't been setup"); + return git_namespace; +} + +const char *strip_namespace(const char *namespaced_ref) +{ + const char *out; + if (skip_prefix(namespaced_ref, get_git_namespace(), &out)) + return out; + return NULL; +} + +const char *get_super_prefix(void) +{ + static int initialized; + if (!initialized) { + super_prefix = xstrdup_or_null(getenv(GIT_SUPER_PREFIX_ENVIRONMENT)); + initialized = 1; + } + return super_prefix; +} + +static int git_work_tree_initialized; + +/* + * Note. This works only before you used a work tree. This was added + * primarily to support git-clone to work in a new repository it just + * created, and is not meant to flip between different work trees. + */ +void set_git_work_tree(const char *new_work_tree) +{ + if (git_work_tree_initialized) { + struct strbuf realpath = STRBUF_INIT; + + strbuf_realpath(&realpath, new_work_tree, 1); + new_work_tree = realpath.buf; + if (strcmp(new_work_tree, the_repository->worktree)) + die("internal error: work tree has already been set\n" + "Current worktree: %s\nNew worktree: %s", + the_repository->worktree, new_work_tree); + strbuf_release(&realpath); + return; + } + git_work_tree_initialized = 1; + repo_set_worktree(the_repository, new_work_tree); +} + +const char *get_git_work_tree(void) +{ + return the_repository->worktree; +} + +const char *get_object_directory(void) +{ + if (!the_repository->objects->odb) + BUG("git environment hasn't been setup"); + return the_repository->objects->odb->path; +} + +int odb_mkstemp(struct strbuf *temp_filename, const char *pattern) +{ + int fd; + /* + * we let the umask do its job, don't try to be more + * restrictive except to remove write permission. + */ + int mode = 0444; + git_path_buf(temp_filename, "objects/%s", pattern); + fd = git_mkstemp_mode(temp_filename->buf, mode); + if (0 <= fd) + return fd; + + /* slow path */ + /* some mkstemp implementations erase temp_filename on failure */ + git_path_buf(temp_filename, "objects/%s", pattern); + safe_create_leading_directories(temp_filename->buf); + return xmkstemp_mode(temp_filename->buf, mode); +} + +int odb_pack_keep(const char *name) +{ + int fd; + + fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600); + if (0 <= fd) + return fd; + + /* slow path */ + safe_create_leading_directories_const(name); + return open(name, O_RDWR|O_CREAT|O_EXCL, 0600); +} + +char *get_index_file(void) +{ + if (!the_repository->index_file) + BUG("git environment hasn't been setup"); + return the_repository->index_file; +} + +char *get_graft_file(struct repository *r) +{ + if (!r->graft_file) + BUG("git environment hasn't been setup"); + return r->graft_file; +} + +static void set_git_dir_1(const char *path) +{ + xsetenv(GIT_DIR_ENVIRONMENT, path, 1); + setup_git_env(path); +} + +static void update_relative_gitdir(const char *name UNUSED, + const char *old_cwd, + const char *new_cwd, + void *data UNUSED) +{ + char *path = reparent_relative_path(old_cwd, new_cwd, get_git_dir()); + struct tmp_objdir *tmp_objdir = tmp_objdir_unapply_primary_odb(); + + trace_printf_key(&trace_setup_key, + "setup: move $GIT_DIR to '%s'", + path); + set_git_dir_1(path); + if (tmp_objdir) + tmp_objdir_reapply_primary_odb(tmp_objdir, old_cwd, new_cwd); + free(path); +} + +void set_git_dir(const char *path, int make_realpath) +{ + struct strbuf realpath = STRBUF_INIT; + + if (make_realpath) { + strbuf_realpath(&realpath, path, 1); + path = realpath.buf; + } + + set_git_dir_1(path); + if (!is_absolute_path(path)) + chdir_notify_register(NULL, update_relative_gitdir, NULL); + + strbuf_release(&realpath); +} + +const char *get_log_output_encoding(void) +{ + return git_log_output_encoding ? git_log_output_encoding + : get_commit_output_encoding(); +} + +const char *get_commit_output_encoding(void) +{ + return git_commit_encoding ? git_commit_encoding : "UTF-8"; +} + +static int the_shared_repository = PERM_UMASK; +static int need_shared_repository_from_config = 1; + +void set_shared_repository(int value) +{ + the_shared_repository = value; + need_shared_repository_from_config = 0; +} + +int get_shared_repository(void) +{ + if (need_shared_repository_from_config) { + const char *var = "core.sharedrepository"; + const char *value; + if (!git_config_get_value(var, &value)) + the_shared_repository = git_config_perm(var, value); + need_shared_repository_from_config = 0; + } + return the_shared_repository; +} + +void reset_shared_repository(void) +{ + need_shared_repository_from_config = 1; +} + +int use_optional_locks(void) +{ + return git_env_bool(GIT_OPTIONAL_LOCKS_ENVIRONMENT, 1); +} + +int print_sha1_ellipsis(void) +{ + /* + * Determine if the calling environment contains the variable + * GIT_PRINT_SHA1_ELLIPSIS set to "yes". + */ + static int cached_result = -1; /* unknown */ + + if (cached_result < 0) { + const char *v = getenv("GIT_PRINT_SHA1_ELLIPSIS"); + cached_result = (v && !strcasecmp(v, "yes")); + } + return cached_result; +} -- cgit v1.2.3