setup.h: move declarations for setup.c functions from cache.h

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

apply.c

@@ -27,6 +27,7 @@
 #include "rerere.h"
 #include "apply.h"
 #include "entry.h"
+#include "setup.h"
 #include "wrapper.h"
 
 struct gitdiff_data {

archive.c

@@ -5,6 +5,7 @@
 #include "environment.h"
 #include "gettext.h"
 #include "hex.h"
+#include "setup.h"
 #include "refs.h"
 #include "object-store.h"
 #include "commit.h"

attr.c

@@ -18,6 +18,7 @@
 #include "quote.h"
 #include "revision.h"
 #include "object-store.h"
+#include "setup.h"
 #include "thread-utils.h"
 
 const char git_attr__true[] = "(builtin)true";

blame.c

@@ -7,6 +7,7 @@
 #include "diffcore.h"
 #include "gettext.h"
 #include "hex.h"
+#include "setup.h"
 #include "tag.h"
 #include "blame.h"
 #include "alloc.h"

builtin/blame.c

@@ -31,6 +31,7 @@
 #include "object-store.h"
 #include "blame.h"
 #include "refs.h"
+#include "setup.h"
 #include "tag.h"
 
 static char blame_usage[] = N_("git blame [<options>] [<rev-opts>] [<rev>] [--] <file>");

builtin/bugreport.c

@@ -8,6 +8,7 @@
 #include "hook.h"
 #include "hook-list.h"
 #include "diagnose.h"
+#include "setup.h"
 #include "wrapper.h"
 
 static void get_system_info(struct strbuf *sys_info)

builtin/bundle.c

@@ -1,6 +1,7 @@
 #include "builtin.h"
 #include "abspath.h"
 #include "gettext.h"
+#include "setup.h"
 #include "strvec.h"
 #include "parse-options.h"
 #include "cache.h"

builtin/check-attr.c

@@ -6,6 +6,7 @@
 #include "environment.h"
 #include "gettext.h"
 #include "quote.h"
+#include "setup.h"
 #include "parse-options.h"
 
 static int all_attrs;

builtin/check-ref-format.c

@@ -5,6 +5,7 @@
 #include "cache.h"
 #include "refs.h"
 #include "builtin.h"
+#include "setup.h"
 #include "strbuf.h"
 
 static const char builtin_check_ref_format_usage[] =

builtin/checkout-index.c

@@ -15,6 +15,7 @@
 #include "parse-options.h"
 #include "entry.h"
 #include "parallel-checkout.h"
+#include "setup.h"
 
 #define CHECKOUT_ALL 4
 static int nul_term_line;

builtin/checkout.c

@@ -23,6 +23,7 @@
 #include "resolve-undo.h"
 #include "revision.h"
 #include "run-command.h"
+#include "setup.h"
 #include "submodule.h"
 #include "submodule-config.h"
 #include "tree.h"

builtin/clean.c

@@ -14,6 +14,7 @@
 #include "dir.h"
 #include "gettext.h"
 #include "parse-options.h"
+#include "setup.h"
 #include "string-list.h"
 #include "quote.h"
 #include "column.h"

builtin/clone.c

@@ -33,6 +33,7 @@
 #include "branch.h"
 #include "remote.h"
 #include "run-command.h"
+#include "setup.h"
 #include "connected.h"
 #include "packfile.h"
 #include "list-objects-filter-options.h"

builtin/config.c

@@ -9,6 +9,7 @@
 #include "parse-options.h"
 #include "urlmatch.h"
 #include "quote.h"
+#include "setup.h"
 #include "worktree.h"
 #include "wrapper.h"
 

builtin/describe.c

@@ -15,6 +15,7 @@
 #include "revision.h"
 #include "diff.h"
 #include "hashmap.h"
+#include "setup.h"
 #include "strvec.h"
 #include "run-command.h"
 #include "object-store.h"

builtin/diff-index.c

@@ -5,6 +5,7 @@
 #include "commit.h"
 #include "revision.h"
 #include "builtin.h"
+#include "setup.h"
 #include "submodule.h"
 
 static const char diff_cache_usage[] =

builtin/diff.c

@@ -19,6 +19,7 @@
 #include "revision.h"
 #include "log-tree.h"
 #include "builtin.h"
+#include "setup.h"
 #include "submodule.h"
 #include "oid-array.h"
 

builtin/difftool.c

@@ -28,6 +28,7 @@
 #include "object-store.h"
 #include "dir.h"
 #include "entry.h"
+#include "setup.h"
 #include "wrapper.h"
 
 static int trust_exit_code;

builtin/gc.c

@@ -36,6 +36,7 @@
 #include "exec-cmd.h"
 #include "gettext.h"
 #include "hook.h"
+#include "setup.h"
 #include "wrapper.h"
 
 #define FAILED_RUN "failed to run %s"

builtin/grep.c

@@ -23,6 +23,7 @@
 #include "quote.h"
 #include "dir.h"
 #include "pathspec.h"
+#include "setup.h"
 #include "submodule.h"
 #include "submodule-config.h"
 #include "object-store.h"

builtin/hash-object.c

@@ -14,6 +14,7 @@
 #include "quote.h"
 #include "parse-options.h"
 #include "exec-cmd.h"
+#include "setup.h"
 
 /*
  * This is to create corrupt objects for debugging and as such it

builtin/help.c

@@ -11,6 +11,7 @@
 #include "config-list.h"
 #include "help.h"
 #include "alias.h"
+#include "setup.h"
 
 #ifndef DEFAULT_HELP_FORMAT
 #define DEFAULT_HELP_FORMAT "man"

builtin/index-pack.c

@@ -20,6 +20,7 @@
 #include "object-store.h"
 #include "replace-object.h"
 #include "promisor-remote.h"
+#include "setup.h"
 #include "wrapper.h"
 
 static const char index_pack_usage[] =

builtin/init-db.c

@@ -12,6 +12,7 @@
 #include "builtin.h"
 #include "exec-cmd.h"
 #include "parse-options.h"
+#include "setup.h"
 #include "worktree.h"
 #include "wrapper.h"
 

builtin/ls-files.c

@@ -20,6 +20,7 @@
 #include "string-list.h"
 #include "pathspec.h"
 #include "run-command.h"
+#include "setup.h"
 #include "submodule.h"
 #include "submodule-config.h"
 

builtin/merge-file.c

@@ -3,6 +3,7 @@
 #include "cache.h"
 #include "config.h"
 #include "gettext.h"
+#include "setup.h"
 #include "xdiff/xdiff.h"
 #include "xdiff-interface.h"
 #include "parse-options.h"

builtin/mv.c

@@ -16,6 +16,7 @@
 #include "cache-tree.h"
 #include "string-list.h"
 #include "parse-options.h"
+#include "setup.h"
 #include "submodule.h"
 #include "entry.h"
 

builtin/read-tree.c

@@ -19,6 +19,7 @@
 #include "builtin.h"
 #include "parse-options.h"
 #include "resolve-undo.h"
+#include "setup.h"
 #include "submodule.h"
 #include "submodule-config.h"
 

builtin/reset.c

@@ -26,6 +26,7 @@
 #include "parse-options.h"
 #include "unpack-trees.h"
 #include "cache-tree.h"
+#include "setup.h"
 #include "submodule.h"
 #include "submodule-config.h"
 #include "dir.h"

builtin/rev-parse.c

@@ -18,6 +18,7 @@
 #include "parse-options.h"
 #include "diff.h"
 #include "revision.h"
+#include "setup.h"
 #include "split-index.h"
 #include "submodule.h"
 #include "commit-reach.h"

builtin/rm.c

@@ -15,6 +15,7 @@
 #include "tree-walk.h"
 #include "parse-options.h"
 #include "string-list.h"
+#include "setup.h"
 #include "submodule.h"
 #include "pathspec.h"
 

builtin/shortlog.c

@@ -9,6 +9,7 @@
 #include "revision.h"
 #include "utf8.h"
 #include "mailmap.h"
+#include "setup.h"
 #include "shortlog.h"
 #include "parse-options.h"
 #include "trailer.h"

builtin/sparse-checkout.c

@@ -16,6 +16,7 @@
 #include "unpack-trees.h"
 #include "wt-status.h"
 #include "quote.h"
+#include "setup.h"
 #include "sparse-index.h"
 #include "worktree.h"
 

builtin/stash.c

@@ -18,6 +18,7 @@
 #include "entry.h"
 #include "rerere.h"
 #include "revision.h"
+#include "setup.h"
 #include "log-tree.h"
 #include "diffcore.h"
 #include "exec-cmd.h"

builtin/stripspace.c

@@ -3,6 +3,7 @@
 #include "config.h"
 #include "gettext.h"
 #include "parse-options.h"
+#include "setup.h"
 #include "strbuf.h"
 
 static void comment_lines(struct strbuf *buf)

builtin/submodule--helper.c

@@ -12,6 +12,7 @@
 #include "quote.h"
 #include "pathspec.h"
 #include "dir.h"
+#include "setup.h"
 #include "submodule.h"
 #include "submodule-config.h"
 #include "string-list.h"

builtin/update-index.c

@@ -20,6 +20,7 @@
 #include "parse-options.h"
 #include "pathspec.h"
 #include "dir.h"
+#include "setup.h"
 #include "split-index.h"
 #include "fsmonitor.h"
 

cache.h

@@ -452,67 +452,6 @@ static inline enum object_type object_type(unsigned int mode)
 		OBJ_BLOB;
 }
 
-int is_inside_git_dir(void);
-int is_inside_work_tree(void);
-int get_common_dir_noenv(struct strbuf *sb, const char *gitdir);
-int get_common_dir(struct strbuf *sb, const char *gitdir);
-
-/*
- * Return true if the given path is a git directory; note that this _just_
- * looks at the directory itself. If you want to know whether "foo/.git"
- * is a repository, you must feed that path, not just "foo".
- */
-int is_git_directory(const char *path);
-
-/*
- * Return 1 if the given path is the root of a git repository or
- * submodule, else 0. Will not return 1 for bare repositories with the
- * exception of creating a bare repository in "foo/.git" and calling
- * is_git_repository("foo").
- *
- * If we run into read errors, we err on the side of saying "yes, it is",
- * as we usually consider sub-repos precious, and would prefer to err on the
- * side of not disrupting or deleting them.
- */
-int is_nonbare_repository_dir(struct strbuf *path);
-
-#define READ_GITFILE_ERR_STAT_FAILED 1
-#define READ_GITFILE_ERR_NOT_A_FILE 2
-#define READ_GITFILE_ERR_OPEN_FAILED 3
-#define READ_GITFILE_ERR_READ_FAILED 4
-#define READ_GITFILE_ERR_INVALID_FORMAT 5
-#define READ_GITFILE_ERR_NO_PATH 6
-#define READ_GITFILE_ERR_NOT_A_REPO 7
-#define READ_GITFILE_ERR_TOO_LARGE 8
-void read_gitfile_error_die(int error_code, const char *path, const char *dir);
-const char *read_gitfile_gently(const char *path, int *return_error_code);
-#define read_gitfile(path) read_gitfile_gently((path), NULL)
-const char *resolve_gitdir_gently(const char *suspect, int *return_error_code);
-#define resolve_gitdir(path) resolve_gitdir_gently((path), NULL)
-
-void setup_work_tree(void);
-/*
- * Find the commondir and gitdir of the repository that contains the current
- * working directory, without changing the working directory or other global
- * state. The result is appended to commondir and gitdir.  If the discovered
- * gitdir does not correspond to a worktree, then 'commondir' and 'gitdir' will
- * both have the same result appended to the buffer.  The return value is
- * either 0 upon success and non-zero if no repository was found.
- */
-int discover_git_directory(struct strbuf *commondir,
-			   struct strbuf *gitdir);
-const char *setup_git_directory_gently(int *);
-const char *setup_git_directory(void);
-char *prefix_path(const char *prefix, int len, const char *path);
-char *prefix_path_gently(const char *prefix, int len, int *remaining, const char *path);
-
-int check_filename(const char *prefix, const char *name);
-void verify_filename(const char *prefix,
-		     const char *name,
-		     int diagnose_misspelt_rev);
-void verify_non_filename(const char *prefix, const char *name);
-int path_inside_repo(const char *prefix, const char *path);
-
 #define INIT_DB_QUIET 0x0001
 #define INIT_DB_EXIST_OK 0x0002
 
@@ -521,9 +460,6 @@ int init_db(const char *git_dir, const char *real_git_dir,
 	    const char *initial_branch, unsigned int flags);
 void initialize_repository_version(int hash_algo, int reinit);
 
-void sanitize_stdfds(void);
-int daemonize(void);
-
 /* Initialize and use the cache information */
 struct lock_file;
 void preload_index(struct index_state *index,
@@ -807,79 +743,6 @@ enum fsync_method {
 
 extern enum fsync_method fsync_method;
 
-/*
- * GIT_REPO_VERSION is the version we write by default. The
- * _READ variant is the highest number we know how to
- * handle.
- */
-#define GIT_REPO_VERSION 0
-#define GIT_REPO_VERSION_READ 1
-
-/*
- * You _have_ to initialize a `struct repository_format` using
- * `= REPOSITORY_FORMAT_INIT` before calling `read_repository_format()`.
- */
-struct repository_format {
-	int version;
-	int precious_objects;
-	char *partial_clone; /* value of extensions.partialclone */
-	int worktree_config;
-	int is_bare;
-	int hash_algo;
-	int sparse_index;
-	char *work_tree;
-	struct string_list unknown_extensions;
-	struct string_list v1_only_extensions;
-};
-
-/*
- * Always use this to initialize a `struct repository_format`
- * to a well-defined, default state before calling
- * `read_repository()`.
- */
-#define REPOSITORY_FORMAT_INIT \
-{ \
-	.version = -1, \
-	.is_bare = -1, \
-	.hash_algo = GIT_HASH_SHA1, \
-	.unknown_extensions = STRING_LIST_INIT_DUP, \
-	.v1_only_extensions = STRING_LIST_INIT_DUP, \
-}
-
-/*
- * Read the repository format characteristics from the config file "path" into
- * "format" struct. Returns the numeric version. On error, or if no version is
- * found in the configuration, -1 is returned, format->version is set to -1,
- * and all other fields in the struct are set to the default configuration
- * (REPOSITORY_FORMAT_INIT). Always initialize the struct using
- * REPOSITORY_FORMAT_INIT before calling this function.
- */
-int read_repository_format(struct repository_format *format, const char *path);
-
-/*
- * Free the memory held onto by `format`, but not the struct itself.
- * (No need to use this after `read_repository_format()` fails.)
- */
-void clear_repository_format(struct repository_format *format);
-
-/*
- * Verify that the repository described by repository_format is something we
- * can read. If it is, return 0. Otherwise, return -1, and "err" will describe
- * any errors encountered.
- */
-int verify_repository_format(const struct repository_format *format,
-			     struct strbuf *err);
-
-/*
- * Check the repository format version in the path found in get_git_dir(),
- * and die if it is a version we don't understand. Generally one would
- * set_git_dir() before calling this, and use it only for "are we in a valid
- * repo?".
- *
- * If successful and fmt is not NULL, fill fmt with data.
- */
-void check_repository_format(struct repository_format *fmt);
-
 #define MTIME_CHANGED	0x0001
 #define CTIME_CHANGED	0x0002
 #define OWNER_CHANGED	0x0004
@@ -908,23 +771,6 @@ const char *repo_find_unique_abbrev(struct repository *r, const struct object_id
 int repo_find_unique_abbrev_r(struct repository *r, char *hex, const struct object_id *oid, int len);
 #define find_unique_abbrev_r(hex, oid, len) repo_find_unique_abbrev_r(the_repository, hex, oid, len)
 
-/*
- * NOTE NOTE NOTE!!
- *
- * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
- * not be changed. Old repositories have core.sharedrepository written in
- * numeric format, and therefore these values are preserved for compatibility
- * reasons.
- */
-enum sharedrepo {
-	PERM_UMASK          = 0,
-	OLD_PERM_GROUP      = 1,
-	OLD_PERM_EVERYBODY  = 2,
-	PERM_GROUP          = 0660,
-	PERM_EVERYBODY      = 0664
-};
-int git_config_perm(const char *var, const char *value);
-
 /*
  * Create the directory containing the named path, using care to be
  * somewhat safe against races. Return one of the scld_error values to
@@ -1283,15 +1129,6 @@ int ws_blank_line(const char *line, int len);
 void overlay_tree_on_index(struct index_state *istate,
 			   const char *tree_name, const char *prefix);
 
-/* setup.c */
-struct startup_info {
-	int have_repository;
-	const char *prefix;
-	const char *original_cwd;
-};
-extern struct startup_info *startup_info;
-extern const char *tmp_original_cwd;
-
 /* merge.c */
 struct commit_list;
 int try_merge_command(struct repository *r,

commit.c

@@ -23,6 +23,7 @@
 #include "refs.h"
 #include "commit-reach.h"
 #include "run-command.h"
+#include "setup.h"
 #include "shallow.h"
 #include "hook.h"
 

common-main.c

@@ -2,6 +2,7 @@
 #include "exec-cmd.h"
 #include "gettext.h"
 #include "attr.h"
+#include "setup.h"
 
 /*
  * Many parts of Git have subprograms communicate via pipe, expect the

config.c

@@ -27,6 +27,7 @@
 #include "color.h"
 #include "replace-object.h"
 #include "refs.h"
+#include "setup.h"
 #include "worktree.h"
 #include "wrapper.h"
 

daemon.c

@@ -5,6 +5,7 @@
 #include "environment.h"
 #include "pkt-line.h"
 #include "run-command.h"
+#include "setup.h"
 #include "strbuf.h"
 #include "string-list.h"
 #include "wrapper.h"

diff.c

@@ -33,6 +33,7 @@
 #include "help.h"
 #include "promisor-remote.h"
 #include "dir.h"
+#include "setup.h"
 #include "strmap.h"
 #include "wrapper.h"
 

dir.c

@@ -21,6 +21,7 @@
 #include "varint.h"
 #include "ewah/ewok.h"
 #include "fsmonitor.h"
+#include "setup.h"
 #include "submodule-config.h"
 #include "wrapper.h"
 

environment.c

@@ -22,6 +22,7 @@
 #include "replace-object.h"
 #include "tmp-objdir.h"
 #include "chdir-notify.h"
+#include "setup.h"
 #include "shallow.h"
 #include "wrapper.h"
 

git.c

@@ -7,6 +7,7 @@
 #include "run-command.h"
 #include "alias.h"
 #include "replace-object.h"
+#include "setup.h"
 #include "shallow.h"
 
 #define RUN_SETUP		(1<<0)

http-fetch.c

@@ -5,6 +5,7 @@
 #include "hex.h"
 #include "http.h"
 #include "walker.h"
+#include "setup.h"
 #include "strvec.h"
 #include "urlmatch.h"
 #include "trace2.h"

http-push.c

@@ -12,6 +12,7 @@
 #include "exec-cmd.h"
 #include "remote.h"
 #include "list-objects.h"
+#include "setup.h"
 #include "sigchain.h"
 #include "strvec.h"
 #include "packfile.h"

imap-send.c

@@ -28,6 +28,7 @@
 #include "gettext.h"
 #include "run-command.h"
 #include "parse-options.h"
+#include "setup.h"
 #include "wrapper.h"
 #if defined(NO_OPENSSL) && !defined(HAVE_OPENSSL_CSPRNG)
 typedef void *SSL;

line-log.c

@@ -16,6 +16,7 @@
 #include "graph.h"
 #include "userdiff.h"
 #include "line-log.h"
+#include "setup.h"
 #include "strvec.h"
 #include "bloom.h"
 

mailmap.c

@@ -3,6 +3,7 @@
 #include "string-list.h"
 #include "mailmap.h"
 #include "object-store.h"
+#include "setup.h"
 
 #define DEBUG_MAILMAP 0
 #if DEBUG_MAILMAP

object-file.c

@@ -37,6 +37,7 @@
 #include "packfile.h"
 #include "object-store.h"
 #include "promisor-remote.h"
+#include "setup.h"
 #include "submodule.h"
 #include "fsck.h"
 #include "wrapper.h"

object-name.c

@@ -15,6 +15,7 @@
 #include "packfile.h"
 #include "object-store.h"
 #include "repository.h"
+#include "setup.h"
 #include "submodule.h"
 #include "midx.h"
 #include "commit-reach.h"

path.c

@@ -11,6 +11,7 @@
 #include "string-list.h"
 #include "dir.h"
 #include "worktree.h"
+#include "setup.h"
 #include "submodule-config.h"
 #include "path.h"
 #include "packfile.h"

pathspec.c

@@ -6,6 +6,7 @@
 #include "gettext.h"
 #include "pathspec.h"
 #include "attr.h"
+#include "setup.h"
 #include "strvec.h"
 #include "quote.h"
 

refs.c

@@ -22,6 +22,7 @@
 #include "worktree.h"
 #include "strvec.h"
 #include "repository.h"
+#include "setup.h"
 #include "sigchain.h"
 #include "date.h"
 #include "commit.h"

refs/files-backend.c

@@ -14,6 +14,7 @@
 #include "../object.h"
 #include "../dir.h"
 #include "../chdir-notify.h"
+#include "../setup.h"
 #include "../worktree.h"
 #include "../wrapper.h"
 

remote-curl.c

@@ -18,6 +18,7 @@
 #include "credential.h"
 #include "oid-array.h"
 #include "send-pack.h"
+#include "setup.h"
 #include "protocol.h"
 #include "quote.h"
 #include "transport.h"

remote.c

@@ -15,6 +15,7 @@
 #include "revision.h"
 #include "dir.h"
 #include "tag.h"
+#include "setup.h"
 #include "string-list.h"
 #include "strvec.h"
 #include "commit-reach.h"

repository.c

@@ -11,6 +11,7 @@
 #include "object.h"
 #include "lockfile.h"
 #include "remote.h"
+#include "setup.h"
 #include "submodule-config.h"
 #include "sparse-index.h"
 #include "promisor-remote.h"

revision.c

@@ -29,6 +29,7 @@
 #include "bisect.h"
 #include "packfile.h"
 #include "worktree.h"
+#include "setup.h"
 #include "strvec.h"
 #include "commit-reach.h"
 #include "commit-graph.h"

scalar.c

@@ -15,6 +15,7 @@
 #include "dir.h"
 #include "packfile.h"
 #include "help.h"
+#include "setup.h"
 
 static void setup_enlistment_directory(int argc, const char **argv,
 				       const char * const *usagestr,

setup.c

@@ -5,6 +5,7 @@
 #include "repository.h"
 #include "config.h"
 #include "dir.h"
+#include "setup.h"
 #include "string-list.h"
 #include "chdir-notify.h"
 #include "promisor-remote.h"

setup.h

@@ -0,0 +1,168 @@
+#ifndef SETUP_H
+#define SETUP_H
+
+#include "string-list.h"
+
+int is_inside_git_dir(void);
+int is_inside_work_tree(void);
+int get_common_dir_noenv(struct strbuf *sb, const char *gitdir);
+int get_common_dir(struct strbuf *sb, const char *gitdir);
+
+/*
+ * Return true if the given path is a git directory; note that this _just_
+ * looks at the directory itself. If you want to know whether "foo/.git"
+ * is a repository, you must feed that path, not just "foo".
+ */
+int is_git_directory(const char *path);
+
+/*
+ * Return 1 if the given path is the root of a git repository or
+ * submodule, else 0. Will not return 1 for bare repositories with the
+ * exception of creating a bare repository in "foo/.git" and calling
+ * is_git_repository("foo").
+ *
+ * If we run into read errors, we err on the side of saying "yes, it is",
+ * as we usually consider sub-repos precious, and would prefer to err on the
+ * side of not disrupting or deleting them.
+ */
+int is_nonbare_repository_dir(struct strbuf *path);
+
+#define READ_GITFILE_ERR_STAT_FAILED 1
+#define READ_GITFILE_ERR_NOT_A_FILE 2
+#define READ_GITFILE_ERR_OPEN_FAILED 3
+#define READ_GITFILE_ERR_READ_FAILED 4
+#define READ_GITFILE_ERR_INVALID_FORMAT 5
+#define READ_GITFILE_ERR_NO_PATH 6
+#define READ_GITFILE_ERR_NOT_A_REPO 7
+#define READ_GITFILE_ERR_TOO_LARGE 8
+void read_gitfile_error_die(int error_code, const char *path, const char *dir);
+const char *read_gitfile_gently(const char *path, int *return_error_code);
+#define read_gitfile(path) read_gitfile_gently((path), NULL)
+const char *resolve_gitdir_gently(const char *suspect, int *return_error_code);
+#define resolve_gitdir(path) resolve_gitdir_gently((path), NULL)
+
+void setup_work_tree(void);
+/*
+ * Find the commondir and gitdir of the repository that contains the current
+ * working directory, without changing the working directory or other global
+ * state. The result is appended to commondir and gitdir.  If the discovered
+ * gitdir does not correspond to a worktree, then 'commondir' and 'gitdir' will
+ * both have the same result appended to the buffer.  The return value is
+ * either 0 upon success and non-zero if no repository was found.
+ */
+int discover_git_directory(struct strbuf *commondir,
+			   struct strbuf *gitdir);
+const char *setup_git_directory_gently(int *);
+const char *setup_git_directory(void);
+char *prefix_path(const char *prefix, int len, const char *path);
+char *prefix_path_gently(const char *prefix, int len, int *remaining, const char *path);
+
+int check_filename(const char *prefix, const char *name);
+void verify_filename(const char *prefix,
+		     const char *name,
+		     int diagnose_misspelt_rev);
+void verify_non_filename(const char *prefix, const char *name);
+int path_inside_repo(const char *prefix, const char *path);
+
+void sanitize_stdfds(void);
+int daemonize(void);
+
+/*
+ * GIT_REPO_VERSION is the version we write by default. The
+ * _READ variant is the highest number we know how to
+ * handle.
+ */
+#define GIT_REPO_VERSION 0
+#define GIT_REPO_VERSION_READ 1
+
+/*
+ * You _have_ to initialize a `struct repository_format` using
+ * `= REPOSITORY_FORMAT_INIT` before calling `read_repository_format()`.
+ */
+struct repository_format {
+	int version;
+	int precious_objects;
+	char *partial_clone; /* value of extensions.partialclone */
+	int worktree_config;
+	int is_bare;
+	int hash_algo;
+	int sparse_index;
+	char *work_tree;
+	struct string_list unknown_extensions;
+	struct string_list v1_only_extensions;
+};
+
+/*
+ * Always use this to initialize a `struct repository_format`
+ * to a well-defined, default state before calling
+ * `read_repository()`.
+ */
+#define REPOSITORY_FORMAT_INIT \
+{ \
+	.version = -1, \
+	.is_bare = -1, \
+	.hash_algo = GIT_HASH_SHA1, \
+	.unknown_extensions = STRING_LIST_INIT_DUP, \
+	.v1_only_extensions = STRING_LIST_INIT_DUP, \
+}
+
+/*
+ * Read the repository format characteristics from the config file "path" into
+ * "format" struct. Returns the numeric version. On error, or if no version is
+ * found in the configuration, -1 is returned, format->version is set to -1,
+ * and all other fields in the struct are set to the default configuration
+ * (REPOSITORY_FORMAT_INIT). Always initialize the struct using
+ * REPOSITORY_FORMAT_INIT before calling this function.
+ */
+int read_repository_format(struct repository_format *format, const char *path);
+
+/*
+ * Free the memory held onto by `format`, but not the struct itself.
+ * (No need to use this after `read_repository_format()` fails.)
+ */
+void clear_repository_format(struct repository_format *format);
+
+/*
+ * Verify that the repository described by repository_format is something we
+ * can read. If it is, return 0. Otherwise, return -1, and "err" will describe
+ * any errors encountered.
+ */
+int verify_repository_format(const struct repository_format *format,
+			     struct strbuf *err);
+
+/*
+ * Check the repository format version in the path found in get_git_dir(),
+ * and die if it is a version we don't understand. Generally one would
+ * set_git_dir() before calling this, and use it only for "are we in a valid
+ * repo?".
+ *
+ * If successful and fmt is not NULL, fill fmt with data.
+ */
+void check_repository_format(struct repository_format *fmt);
+
+/*
+ * NOTE NOTE NOTE!!
+ *
+ * PERM_UMASK, OLD_PERM_GROUP and OLD_PERM_EVERYBODY enumerations must
+ * not be changed. Old repositories have core.sharedrepository written in
+ * numeric format, and therefore these values are preserved for compatibility
+ * reasons.
+ */
+enum sharedrepo {
+	PERM_UMASK          = 0,
+	OLD_PERM_GROUP      = 1,
+	OLD_PERM_EVERYBODY  = 2,
+	PERM_GROUP          = 0660,
+	PERM_EVERYBODY      = 0664
+};
+int git_config_perm(const char *var, const char *value);
+
+struct startup_info {
+	int have_repository;
+	const char *prefix;
+	const char *original_cwd;
+};
+extern struct startup_info *startup_info;
+extern const char *tmp_original_cwd;
+
+#endif /* SETUP_H */

submodule.c

@@ -26,6 +26,7 @@
 #include "parse-options.h"
 #include "object-store.h"
 #include "commit-reach.h"
+#include "setup.h"
 #include "shallow.h"
 
 static int config_update_recurse_submodules = RECURSE_SUBMODULES_OFF;

symlinks.c

@@ -1,5 +1,6 @@
 #include "cache.h"
 #include "gettext.h"
+#include "setup.h"
 
 static int threaded_check_leading_path(struct cache_def *cache, const char *name,
 				       int len, int warn_on_lstat_err);

t/helper/test-advise.c

@@ -2,6 +2,7 @@
 #include "cache.h"
 #include "advice.h"
 #include "config.h"
+#include "setup.h"
 
 int cmd__advise_if_enabled(int argc, const char **argv)
 {

t/helper/test-bitmap.c

@@ -1,6 +1,7 @@
 #include "test-tool.h"
 #include "git-compat-util.h"
 #include "pack-bitmap.h"
+#include "setup.h"
 
 static int bitmap_list_commits(void)
 {

t/helper/test-bloom.c

@@ -3,6 +3,7 @@
 #include "hex.h"
 #include "test-tool.h"
 #include "commit.h"
+#include "setup.h"
 
 static struct bloom_filter_settings settings = DEFAULT_BLOOM_FILTER_SETTINGS;
 

t/helper/test-cache-tree.c

@@ -6,6 +6,7 @@
 #include "tree.h"
 #include "cache-tree.h"
 #include "parse-options.h"
+#include "setup.h"
 
 static char const * const test_cache_tree_usage[] = {
 	N_("test-tool cache-tree <options> (control|prime|update)"),

t/helper/test-config.c

@@ -1,6 +1,7 @@
 #include "test-tool.h"
 #include "cache.h"
 #include "config.h"
+#include "setup.h"
 #include "string-list.h"
 
 /*

t/helper/test-dump-cache-tree.c

@@ -4,7 +4,7 @@
 #include "hex.h"
 #include "tree.h"
 #include "cache-tree.h"
-
+#include "setup.h"
 
 static void dump_one(struct cache_tree *it, const char *pfx, const char *x)
 {

t/helper/test-dump-fsmonitor.c

@@ -1,5 +1,6 @@
 #include "test-tool.h"
 #include "cache.h"
+#include "setup.h"
 
 int cmd__dump_fsmonitor(int ac, const char **av)
 {

t/helper/test-dump-split-index.c

@@ -2,6 +2,7 @@
 #include "test-tool.h"
 #include "cache.h"
 #include "hex.h"
+#include "setup.h"
 #include "split-index.h"
 #include "ewah/ewok.h"
 

t/helper/test-dump-untracked-cache.c

@@ -3,6 +3,7 @@
 #include "cache.h"
 #include "dir.h"
 #include "hex.h"
+#include "setup.h"
 
 static int compare_untracked(const void *a_, const void *b_)
 {

t/helper/test-fast-rebase.c

@@ -23,6 +23,7 @@
 #include "refs.h"
 #include "revision.h"
 #include "sequencer.h"
+#include "setup.h"
 #include "strvec.h"
 #include "tree.h"
 

t/helper/test-fsmonitor-client.c

@@ -7,6 +7,7 @@
 #include "cache.h"
 #include "parse-options.h"
 #include "fsmonitor-ipc.h"
+#include "setup.h"
 #include "thread-utils.h"
 #include "trace2.h"
 #include "wrapper.h"

t/helper/test-lazy-init-name-hash.c

@@ -3,6 +3,7 @@
 #include "cache.h"
 #include "environment.h"
 #include "parse-options.h"
+#include "setup.h"
 
 static int single;
 static int multi;

t/helper/test-match-trees.c

@@ -1,6 +1,7 @@
 #include "test-tool.h"
 #include "cache.h"
 #include "hex.h"
+#include "setup.h"
 #include "tree.h"
 
 int cmd__match_trees(int ac, const char **av)

t/helper/test-oid-array.c

@@ -2,6 +2,7 @@
 #include "cache.h"
 #include "hex.h"
 #include "oid-array.h"
+#include "setup.h"
 
 static int print_oid(const struct object_id *oid, void *data)
 {

t/helper/test-oidmap.c

@@ -2,6 +2,7 @@
 #include "cache.h"
 #include "hex.h"
 #include "oidmap.h"
+#include "setup.h"
 #include "strbuf.h"
 
 /* key is an oid and value is a name (could be a refname for example) */

t/helper/test-oidtree.c

@@ -2,6 +2,7 @@
 #include "cache.h"
 #include "hex.h"
 #include "oidtree.h"
+#include "setup.h"
 
 static enum cb_next print_oid(const struct object_id *oid, void *data)
 {

t/helper/test-pack-mtimes.c

@@ -5,6 +5,7 @@
 #include "object-store.h"
 #include "packfile.h"
 #include "pack-mtimes.h"
+#include "setup.h"
 
 static void dump_mtimes(struct packed_git *p)
 {

t/helper/test-partial-clone.c

@@ -3,6 +3,7 @@
 #include "test-tool.h"
 #include "repository.h"
 #include "object-store.h"
+#include "setup.h"
 
 /*
  * Prints the size of the object corresponding to the given hash in a specific

t/helper/test-path-utils.c

@@ -2,6 +2,7 @@
 #include "cache.h"
 #include "abspath.h"
 #include "environment.h"
+#include "setup.h"
 #include "string-list.h"
 #include "utf8.h"
 

t/helper/test-proc-receive.c

@@ -3,6 +3,7 @@
 #include "hex.h"
 #include "parse-options.h"
 #include "pkt-line.h"
+#include "setup.h"
 #include "sigchain.h"
 #include "test-tool.h"
 

t/helper/test-reach.c

@@ -8,6 +8,7 @@
 #include "hex.h"
 #include "parse-options.h"
 #include "ref-filter.h"
+#include "setup.h"
 #include "string-list.h"
 #include "tag.h"
 

t/helper/test-read-cache.c

@@ -2,6 +2,7 @@
 #include "test-tool.h"
 #include "cache.h"
 #include "config.h"
+#include "setup.h"
 #include "wrapper.h"
 
 int cmd__read_cache(int argc, const char **argv)

t/helper/test-read-graph.c

@@ -4,6 +4,7 @@
 #include "repository.h"
 #include "object-store.h"
 #include "bloom.h"
+#include "setup.h"
 
 int cmd__read_graph(int argc, const char **argv)
 {

t/helper/test-read-midx.c

@@ -5,6 +5,7 @@
 #include "repository.h"
 #include "object-store.h"
 #include "pack-bitmap.h"
+#include "setup.h"
 
 static int read_midx_file(const char *object_dir, int show_objects)
 {

t/helper/test-ref-store.c

@@ -2,6 +2,7 @@
 #include "cache.h"
 #include "hex.h"
 #include "refs.h"
+#include "setup.h"
 #include "worktree.h"
 #include "object-store.h"
 #include "repository.h"

t/helper/test-repository.c

@@ -8,6 +8,7 @@
 #include "object-store.h"
 #include "object.h"
 #include "repository.h"
+#include "setup.h"
 #include "tree.h"
 
 static void test_parse_commit_in_graph(const char *gitdir, const char *worktree,

t/helper/test-revision-walking.c

@@ -13,6 +13,7 @@
 #include "commit.h"
 #include "diff.h"
 #include "revision.h"
+#include "setup.h"
 
 static void print_commit(struct commit *commit)
 {

t/helper/test-scrap-cache-tree.c

@@ -2,6 +2,7 @@
 #include "test-tool.h"
 #include "cache.h"
 #include "lockfile.h"
+#include "setup.h"
 #include "tree.h"
 #include "cache-tree.h"
 

t/helper/test-serve-v2.c

@@ -3,6 +3,7 @@
 #include "gettext.h"
 #include "parse-options.h"
 #include "serve.h"
+#include "setup.h"
 
 static char const * const serve_usage[] = {
 	N_("test-tool serve-v2 [<options>]"),

t/helper/test-submodule-config.c

@@ -1,6 +1,7 @@
 #include "test-tool.h"
 #include "cache.h"
 #include "config.h"
+#include "setup.h"
 #include "submodule-config.h"
 #include "submodule.h"
 

t/helper/test-submodule-nested-repo-config.c

@@ -1,5 +1,6 @@
 #include "test-tool.h"
 #include "cache.h"
+#include "setup.h"
 #include "submodule-config.h"
 
 static void die_usage(const char **argv, const char *msg)

t/helper/test-submodule.c

@@ -3,6 +3,7 @@
 #include "cache.h"
 #include "parse-options.h"
 #include "remote.h"
+#include "setup.h"
 #include "submodule-config.h"
 #include "submodule.h"
 

t/helper/test-subprocess.c

@@ -1,6 +1,7 @@
 #include "test-tool.h"
 #include "cache.h"
 #include "run-command.h"
+#include "setup.h"
 
 int cmd__subprocess(int argc, const char **argv)
 {

t/helper/test-userdiff.c

@@ -1,5 +1,6 @@
 #include "test-tool.h"
 #include "cache.h"
+#include "setup.h"
 #include "userdiff.h"
 #include "config.h"