The repo setup procedure is updated to detect $GIT_DIR/commondir and
set $GIT_COMMON_DIR properly.
The core.worktree is ignored when $GIT_DIR/commondir presents. This is
because "commondir" repos are intended for separate/linked checkouts
and pointing them back to a fixed core.worktree just does not make
sense.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
Documentation/config.txt | 3 +-
Documentation/git-rev-parse.txt | 3 ++
builtin/rev-parse.c | 4 +++
cache.h | 1 +
environment.c | 8 ++---
setup.c | 33 +++++++++++++-----
t/t1501-worktree.sh | 76 +++++++++++++++++++++++++++++++++++++++++
t/t1510-repo-setup.sh | 1 +
trace.c | 1 +
9 files changed, 115 insertions(+), 15 deletions(-)
diff --git a/Documentation/config.txt b/Documentation/config.txt
index 5f4d793..cbf4d97 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -381,7 +381,8 @@ false), while all other repositories are assumed to be bare (bare
core.worktree::
Set the path to the root of the working tree.
- This can be overridden by the GIT_WORK_TREE environment
+ This can be overridden by the GIT_WORK_TREE
+ or GIT_COMMON_DIR environment
variable and the '--work-tree' command line option.
The value can be an absolute path or relative to the path to
the .git directory, which is either specified by --git-dir
diff --git a/Documentation/git-rev-parse.txt b/Documentation/git-rev-parse.txt
index 33e4e90..8e6ad32 100644
--- a/Documentation/git-rev-parse.txt
+++ b/Documentation/git-rev-parse.txt
@@ -215,6 +215,9 @@ If `$GIT_DIR` is not defined and the current directory
is not detected to lie in a Git repository or work tree
print a message to stderr and exit with nonzero status.
+--git-common-dir::
+ Show `$GIT_COMMON_DIR` if defined, else `$GIT_DIR`.
+
--is-inside-git-dir::
When the current working directory is below the repository
directory print "true", otherwise "false".
diff --git a/builtin/rev-parse.c b/builtin/rev-parse.c
index e50bc65..c7057ce 100644
--- a/builtin/rev-parse.c
+++ b/builtin/rev-parse.c
@@ -744,6 +744,10 @@ int cmd_rev_parse(int argc, const char **argv, const char *prefix)
printf("%s%s.git\n", cwd, len && cwd[len-1] != '/' ? "/" : "");
continue;
}
+ if (!strcmp(arg, "--git-common-dir")) {
+ puts(get_git_common_dir());
+ continue;
+ }
if (!strcmp(arg, "--resolve-git-dir")) {
const char *gitdir = resolve_gitdir(argv[i+1]);
if (!gitdir)
diff --git a/cache.h b/cache.h
index 51ade32..98b5dd3 100644
--- a/cache.h
+++ b/cache.h
@@ -407,6 +407,7 @@ 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 get_common_dir(struct strbuf *sb, const char *gitdir);
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 c998120..0999fc1 100644
--- a/environment.c
+++ b/environment.c
@@ -126,6 +126,7 @@ static char *expand_namespace(const char *raw_namespace)
static void setup_git_env(void)
{
+ struct strbuf sb = STRBUF_INIT;
const char *gitfile;
const char *shallow_file;
@@ -134,12 +135,9 @@ static void setup_git_env(void)
git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
gitfile = read_gitfile(git_dir);
git_dir = xstrdup(gitfile ? gitfile : git_dir);
- git_common_dir = getenv(GIT_COMMON_DIR_ENVIRONMENT);
- if (git_common_dir) {
+ if (get_common_dir(&sb, git_dir))
git_common_dir_env = 1;
- git_common_dir = xstrdup(git_common_dir);
- } else
- git_common_dir = git_dir;
+ git_common_dir = strbuf_detach(&sb, NULL);
git_object_dir = getenv(DB_ENVIRONMENT);
if (!git_object_dir) {
git_object_dir = xmalloc(strlen(git_common_dir) + 9);
diff --git a/setup.c b/setup.c
index e56ec11..d4ac878 100644
--- a/setup.c
+++ b/setup.c
@@ -170,14 +170,15 @@ void verify_non_filename(const char *prefix, const char *arg)
"'git <command> [<revision>...] -- [<file>...]'", arg);
}
-static void get_common_dir(struct strbuf *sb, const char *gitdir)
+int get_common_dir(struct strbuf *sb, const char *gitdir)
{
struct strbuf data = STRBUF_INIT;
struct strbuf path = STRBUF_INIT;
const char *git_common_dir = getenv(GIT_COMMON_DIR_ENVIRONMENT);
+ int ret = 0;
if (git_common_dir) {
strbuf_addstr(sb, git_common_dir);
- return;
+ return 1;
}
strbuf_addf(&path, "%s/commondir", gitdir);
if (file_exists(path.buf)) {
@@ -189,10 +190,12 @@ static void get_common_dir(struct strbuf *sb, const char *gitdir)
strbuf_addf(&path, "%s/", gitdir);
strbuf_addbuf(&path, &data);
strbuf_addstr(sb, real_path(path.buf));
+ ret = 1;
} else
strbuf_addstr(sb, gitdir);
strbuf_release(&data);
strbuf_release(&path);
+ return ret;
}
/*
@@ -279,13 +282,26 @@ void setup_work_tree(void)
initialized = 1;
}
+static int check_repo_format(const char *var, const char *value, void *cb)
+{
+ if (strcmp(var, "core.repositoryformatversion") == 0)
+ repository_format_version = git_config_int(var, value);
+ else if (strcmp(var, "core.sharedrepository") == 0)
+ shared_repository = git_config_perm(var, value);
+ return 0;
+}
+
static int check_repository_format_gently(const char *gitdir, int *nongit_ok)
{
struct strbuf sb = STRBUF_INIT;
const char *repo_config;
+ config_fn_t fn;
int ret = 0;
- get_common_dir(&sb, gitdir);
+ if (get_common_dir(&sb, gitdir))
+ fn = check_repo_format;
+ else
+ fn = check_repository_format_version;
strbuf_addstr(&sb, "/config");
repo_config = sb.buf;
@@ -298,7 +314,7 @@ static int check_repository_format_gently(const char *gitdir, int *nongit_ok)
* Use a gentler version of git_config() to check if this repo
* is a good one.
*/
- git_config_early(check_repository_format_version, NULL, repo_config);
+ git_config_early(fn, NULL, repo_config);
if (GIT_REPO_VERSION < repository_format_version) {
if (!nongit_ok)
die ("Expected git repo version <= %d, found %d",
@@ -770,11 +786,10 @@ int git_config_perm(const char *var, const char *value)
int check_repository_format_version(const char *var, const char *value, void *cb)
{
- if (strcmp(var, "core.repositoryformatversion") == 0)
- repository_format_version = git_config_int(var, value);
- else if (strcmp(var, "core.sharedrepository") == 0)
- shared_repository = git_config_perm(var, value);
- else if (strcmp(var, "core.bare") == 0) {
+ int ret = check_repo_format(var, value, cb);
+ if (ret)
+ return ret;
+ if (strcmp(var, "core.bare") == 0) {
is_bare_repository_cfg = git_config_bool(var, value);
if (is_bare_repository_cfg == 1)
inside_work_tree = -1;
diff --git a/t/t1501-worktree.sh b/t/t1501-worktree.sh
index 8f36aa9..d8bdaf4 100755
--- a/t/t1501-worktree.sh
+++ b/t/t1501-worktree.sh
@@ -346,4 +346,80 @@ test_expect_success 'relative $GIT_WORK_TREE and git subprocesses' '
test_cmp expected actual
'
+test_expect_success 'Multi-worktree setup' '
+ mkdir work &&
+ mkdir -p repo.git/repos/foo &&
+ cp repo.git/HEAD repo.git/index repo.git/repos/foo &&
+ unset GIT_DIR GIT_CONFIG GIT_WORK_TREE
+'
+
+test_expect_success 'GIT_DIR set (1)' '
+ echo "gitdir: repo.git/repos/foo" >gitfile &&
+ echo ../.. >repo.git/repos/foo/commondir &&
+ (
+ cd work &&
+ GIT_DIR=../gitfile git rev-parse --git-common-dir >actual &&
+ echo "$TRASH_DIRECTORY/repo.git" >expect &&
+ test_cmp expect actual
+ )
+'
+
+test_expect_success 'GIT_DIR set (2)' '
+ echo "gitdir: repo.git/repos/foo" >gitfile &&
+ echo "$TRASH_DIRECTORY/repo.git" >repo.git/repos/foo/commondir &&
+ (
+ cd work &&
+ GIT_DIR=../gitfile git rev-parse --git-common-dir >actual &&
+ echo "$TRASH_DIRECTORY/repo.git" >expect &&
+ test_cmp expect actual
+ )
+'
+
+test_expect_success 'Auto discovery' '
+ echo "gitdir: repo.git/repos/foo" >.git &&
+ echo ../.. >repo.git/repos/foo/commondir &&
+ (
+ cd work &&
+ git rev-parse --git-common-dir >actual &&
+ echo "$TRASH_DIRECTORY/repo.git" >expect &&
+ test_cmp expect actual &&
+ echo haha >data1 &&
+ git add data1 &&
+ git ls-files --full-name :/ | grep data1 >actual &&
+ echo work/data1 >expect &&
+ test_cmp expect actual
+ )
+'
+
+test_expect_success '$GIT_DIR/common overrides core.worktree' '
+ mkdir elsewhere &&
+ git --git-dir=repo.git config core.worktree "$TRASH_DIRECTORY/elsewhere" &&
+ echo "gitdir: repo.git/repos/foo" >.git &&
+ echo ../.. >repo.git/repos/foo/commondir &&
+ (
+ cd work &&
+ git rev-parse --git-common-dir >actual &&
+ echo "$TRASH_DIRECTORY/repo.git" >expect &&
+ test_cmp expect actual &&
+ echo haha >data2 &&
+ git add data2 &&
+ git ls-files --full-name :/ | grep data2 >actual &&
+ echo work/data2 >expect &&
+ test_cmp expect actual
+ )
+'
+
+test_expect_success '$GIT_WORK_TREE overrides $GIT_DIR/common' '
+ echo "gitdir: repo.git/repos/foo" >.git &&
+ echo ../.. >repo.git/repos/foo/commondir &&
+ (
+ cd work &&
+ echo haha >data3 &&
+ git --git-dir=../.git --work-tree=. add data3 &&
+ git ls-files --full-name -- :/ | grep data3 >actual &&
+ echo data3 >expect &&
+ test_cmp expect actual
+ )
+'
+
test_done
diff --git a/t/t1510-repo-setup.sh b/t/t1510-repo-setup.sh
index cf2ee78..c211ef5 100755
--- a/t/t1510-repo-setup.sh
+++ b/t/t1510-repo-setup.sh
@@ -106,6 +106,7 @@ setup_env () {
expect () {
cat >"$1/expected" <<-EOF
setup: git_dir: $2
+ setup: git_common_dir: $2
setup: worktree: $3
setup: cwd: $4
setup: prefix: $5
diff --git a/trace.c b/trace.c
index 08180a9..a594761 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_common_dir: %s\n", quote_crnl(get_git_common_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));
--
1.8.5.2.240.g8478abd
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