[PATCH/POC 6/7] setup.c: add split-repo support to setup_git_directory*
XXX bare repos probably not worth supporting..
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
cache.h | 1 +
environment.c | 19 ++++++++++++++++--
setup.c | 62 +++++++++++++++++++++++++++++++++++++++--------------------
trace.c | 1 +
4 files changed, 60 insertions(+), 23 deletions(-)
diff --git a/cache.h b/cache.h
index f85ee70..4c09223 100644
--- a/cache.h
+++ b/cache.h
@@ -406,6 +406,7 @@ extern char *get_object_directory(void);
extern char *get_index_file(void);
extern char *get_graft_file(void);
extern int set_git_dir(const char *path);
+extern int set_git_dir_super(const char *path, const char *super);
extern const char *get_git_namespace(void);
extern const char *strip_namespace(const char *namespaced_ref);
extern const char *get_git_work_tree(void);
diff --git a/environment.c b/environment.c
index d5ae7a3..8152c7e 100644
--- a/environment.c
+++ b/environment.c
@@ -125,13 +125,17 @@ static char *expand_namespace(const char *raw_namespace)
static void setup_git_env(void)
{
const char *gitfile;
+ char *super;
git_dir = getenv(GIT_DIR_ENVIRONMENT);
if (!git_dir)
git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
- gitfile = read_gitfile(git_dir);
+ gitfile = read_gitfile_super(git_dir, &super);
git_dir = xstrdup(gitfile ? gitfile : git_dir);
- git_super_dir = getenv(GIT_SUPER_DIR_ENVIRONMENT);
+ if (super)
+ git_super_dir = xstrdup(super);
+ else
+ git_super_dir = getenv(GIT_SUPER_DIR_ENVIRONMENT);
git_object_dir = getenv(DB_ENVIRONMENT);
if (!git_object_dir) {
git_object_dir = xmalloc(strlen(git_dir) + 9);
@@ -280,6 +284,17 @@ int set_git_dir(const char *path)
return 0;
}
+int set_git_dir_super(const char *path, const char *super)
+{
+ if (super != path &&
+ setenv(GIT_SUPER_DIR_ENVIRONMENT, super, 1))
+ return error("Could not set GIT_SUPER_DIR to '%s'", super);
+ if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
+ return error("Could not set GIT_DIR to '%s'", path);
+ setup_git_env();
+ return 0;
+}
+
const char *get_log_output_encoding(void)
{
return git_log_output_encoding ? git_log_output_encoding
diff --git a/setup.c b/setup.c
index dfe9d08..f22381e 100644
--- a/setup.c
+++ b/setup.c
@@ -255,7 +255,8 @@ void setup_work_tree(void)
if (getenv(GIT_WORK_TREE_ENVIRONMENT))
setenv(GIT_WORK_TREE_ENVIRONMENT, ".", 1);
- set_git_dir(remove_leading_path(git_dir, work_tree));
+ set_git_dir_super(remove_leading_path(git_dir, work_tree),
+ get_git_super_dir());
initialized = 1;
}
@@ -368,24 +369,28 @@ const char *read_gitfile(const char *path)
static const char *setup_explicit_git_dir(const char *gitdirenv,
+ const char *super_,
char *cwd, int len,
int *nongit_ok)
{
const char *work_tree_env = getenv(GIT_WORK_TREE_ENVIRONMENT);
const char *worktree;
- char *gitfile;
+ char *gitfile, *super = (char *)super_;
int offset;
if (PATH_MAX - 40 < strlen(gitdirenv))
die("'$%s' too big", GIT_DIR_ENVIRONMENT);
- gitfile = (char*)read_gitfile(gitdirenv);
+ gitfile = (char*)read_gitfile_super(gitdirenv, !super ? &super : NULL);
if (gitfile) {
gitfile = xstrdup(gitfile);
gitdirenv = gitfile;
- }
+ if (!super)
+ super = gitfile;
+ } else if (!super)
+ super = (char *)gitdirenv;
- if (!is_git_directory(gitdirenv)) {
+ if (!is_git_directory_super(gitdirenv, super)) {
if (nongit_ok) {
*nongit_ok = 1;
goto done_null;
@@ -393,7 +398,7 @@ static const char *setup_explicit_git_dir(const char *gitdirenv,
die("Not a git repository: '%s'", gitdirenv);
}
- if (check_repository_format_gently(gitdirenv, nongit_ok))
+ if (check_repository_format_gently(super, nongit_ok))
goto done_null;
/* #3, #7, #11, #15, #19, #23, #27, #31 (see t1510) */
@@ -404,7 +409,7 @@ static const char *setup_explicit_git_dir(const char *gitdirenv,
die("core.bare and core.worktree do not make sense");
/* #18, #26 */
- set_git_dir(gitdirenv);
+ set_git_dir_super(gitdirenv, super);
goto done_null;
}
else if (git_work_tree_cfg) { /* #6, #14 */
@@ -425,7 +430,7 @@ static const char *setup_explicit_git_dir(const char *gitdirenv,
}
else if (!git_env_bool(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, 1)) {
/* #16d */
- set_git_dir(gitdirenv);
+ set_git_dir_super(gitdirenv, super);
goto done_null;
}
else /* #2, #10 */
@@ -436,34 +441,39 @@ static const char *setup_explicit_git_dir(const char *gitdirenv,
/* both get_git_work_tree() and cwd are already normalized */
if (!strcmp(cwd, worktree)) { /* cwd == worktree */
- set_git_dir(gitdirenv);
+ set_git_dir_super(gitdirenv, super);
goto done_null;
}
offset = dir_inside_of(cwd, worktree);
if (offset >= 0) { /* cwd inside worktree? */
- set_git_dir(real_path(gitdirenv));
+ set_git_dir_super(real_path(gitdirenv), super);
if (chdir(worktree))
die_errno("Could not chdir to '%s'", worktree);
cwd[len++] = '/';
cwd[len] = '\0';
free(gitfile);
+ if (super != gitdirenv && super != super_)
+ free(super);
return cwd + offset;
}
/* cwd outside worktree */
- set_git_dir(gitdirenv);
+ set_git_dir_super(gitdirenv, super);
done_null:
free(gitfile);
+ if (super != gitdirenv && super != super_)
+ free(super);
return NULL;
}
static const char *setup_discovered_git_dir(const char *gitdir,
+ const char *super,
char *cwd, int offset, int len,
int *nongit_ok)
{
- if (check_repository_format_gently(gitdir, nongit_ok))
+ if (check_repository_format_gently(super, nongit_ok))
return NULL;
/* --work-tree is set without --git-dir; use discovered one */
@@ -472,7 +482,7 @@ static const char *setup_discovered_git_dir(const char *gitdir,
gitdir = xstrdup(real_path(gitdir));
if (chdir(cwd))
die_errno("Could not come back to cwd");
- return setup_explicit_git_dir(gitdir, cwd, len, nongit_ok);
+ return setup_explicit_git_dir(gitdir, super, cwd, len, nongit_ok);
}
/* #16.2, #17.2, #20.2, #21.2, #24, #25, #28, #29 (see t1510) */
@@ -486,7 +496,7 @@ static const char *setup_discovered_git_dir(const char *gitdir,
/* #0, #1, #5, #8, #9, #12, #13 */
set_git_work_tree(".");
if (strcmp(gitdir, DEFAULT_GIT_DIR_ENVIRONMENT))
- set_git_dir(gitdir);
+ set_git_dir_super(gitdir, super);
inside_git_dir = 0;
inside_work_tree = 1;
if (offset == len)
@@ -516,7 +526,7 @@ static const char *setup_bare_git_dir(char *cwd, int offset, int len, int *nongi
gitdir = offset == len ? "." : xmemdupz(cwd, offset);
if (chdir(cwd))
die_errno("Could not come back to cwd");
- return setup_explicit_git_dir(gitdir, cwd, len, nongit_ok);
+ return setup_explicit_git_dir(gitdir, NULL, cwd, len, nongit_ok);
}
inside_git_dir = 1;
@@ -596,7 +606,7 @@ static const char *setup_git_directory_gently_1(int *nongit_ok)
struct string_list ceiling_dirs = STRING_LIST_INIT_DUP;
static char cwd[PATH_MAX + 1];
const char *gitdirenv, *ret;
- char *gitfile;
+ char *gitfile, *super;
int len, offset, offset_parent, ceil_offset = -1;
dev_t current_device = 0;
int one_filesystem = 1;
@@ -620,7 +630,9 @@ static const char *setup_git_directory_gently_1(int *nongit_ok)
*/
gitdirenv = getenv(GIT_DIR_ENVIRONMENT);
if (gitdirenv)
- return setup_explicit_git_dir(gitdirenv, cwd, len, nongit_ok);
+ return setup_explicit_git_dir(gitdirenv,
+ getenv(GIT_SUPER_DIR_ENVIRONMENT),
+ cwd, len, nongit_ok);
if (env_ceiling_dirs) {
int empty_entry_found = 0;
@@ -650,21 +662,29 @@ static const char *setup_git_directory_gently_1(int *nongit_ok)
if (one_filesystem)
current_device = get_device_or_die(".", NULL, 0);
for (;;) {
- gitfile = (char*)read_gitfile(DEFAULT_GIT_DIR_ENVIRONMENT);
- if (gitfile)
+ gitfile = (char*)read_gitfile_super(DEFAULT_GIT_DIR_ENVIRONMENT,
+ &super);
+ if (gitfile) {
gitdirenv = gitfile = xstrdup(gitfile);
- else {
+ if (!super)
+ super = gitfile;
+ } else {
if (is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT))
gitdirenv = DEFAULT_GIT_DIR_ENVIRONMENT;
+ super = (char *)gitdirenv;
}
if (gitdirenv) {
- ret = setup_discovered_git_dir(gitdirenv,
+ ret = setup_discovered_git_dir(gitdirenv, super,
cwd, offset, len,
nongit_ok);
+ if (super != gitdirenv)
+ free(super);
free(gitfile);
return ret;
}
+ if (super != gitdirenv)
+ free(super);
free(gitfile);
if (is_git_directory("."))
diff --git a/trace.c b/trace.c
index 3d744d1..53d800b 100644
--- a/trace.c
+++ b/trace.c
@@ -173,6 +173,7 @@ void trace_repo_setup(const char *prefix)
prefix = "(null)";
trace_printf_key(key, "setup: git_dir: %s\n", quote_crnl(get_git_dir()));
+ trace_printf_key(key, "setup: git_super_dir: %s\n", quote_crnl(get_git_super_dir()));
trace_printf_key(key, "setup: worktree: %s\n", quote_crnl(git_work_tree));
trace_printf_key(key, "setup: cwd: %s\n", quote_crnl(cwd));
trace_printf_key(key, "setup: prefix: %s\n", quote_crnl(prefix));
--
1.8.5.1.77.g42c48fa
Nguyễn Thái Ngọc Duy <pclouds@gmail.com>