From a52beae3a319e8133be0fe245e5fb3b9e7d8d9fb Mon Sep 17 00:00:00 2001 From: Patrick Steinhardt Date: Thu, 12 Sep 2024 13:29:54 +0200 Subject: environment: move `set_git_dir()` and related into setup layer The functions `set_git_dir()` and friends are used to set up repositories. As such, they are quite clearly part of the setup subsystem, but still live in "environment.c". Move them over, which also helps to get rid of dependencies on `the_repository` in the environment subsystem. Signed-off-by: Patrick Steinhardt Signed-off-by: Junio C Hamano --- setup.c | 106 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 106 insertions(+) (limited to 'setup.c') diff --git a/setup.c b/setup.c index 1bfec288ab..19cce5afa7 100644 --- a/setup.c +++ b/setup.c @@ -7,16 +7,22 @@ #include "exec-cmd.h" #include "gettext.h" #include "hex.h" +#include "object-file.h" #include "object-name.h" #include "refs.h" +#include "replace-object.h" #include "repository.h" #include "config.h" #include "dir.h" #include "setup.h" +#include "shallow.h" #include "string-list.h" +#include "strvec.h" #include "chdir-notify.h" #include "path.h" #include "quote.h" +#include "tmp-objdir.h" +#include "trace.h" #include "trace2.h" #include "worktree.h" #include "exec-cmd.h" @@ -1613,6 +1619,106 @@ enum discovery_result discover_git_directory_reason(struct strbuf *commondir, return result; } +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)) + disable_replace_refs(); + 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); + + shallow_file = getenv(GIT_SHALLOW_FILE_ENVIRONMENT); + if (shallow_file) + set_alternate_shallow_file(the_repository, shallow_file, 0); + + if (git_env_bool(NO_LAZY_FETCH_ENVIRONMENT, 0)) + fetch_if_missing = 0; +} + +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, + repo_get_git_dir(the_repository)); + 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); +} + +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 *setup_git_directory_gently(int *nongit_ok) { static struct strbuf cwd = STRBUF_INIT; -- cgit v1.3