This environment variable can be used with GIT_DIR to
specify the working tree. When GIT_DIR is not set this
variable is ignored. As for GIT_DIR there is also the
option git --work-tree which overrides the environment
variable and a config setting core.worktree which is used as
default value.
Signed-off-by: Matthias Lederhofer <matled@xxxxxxx>
---
Documentation/config.txt | 4 ++
Documentation/git.txt | 17 +++++++-
cache.h | 2 +
environment.c | 11 ++++-
git.c | 12 +++++-
setup.c | 98 ++++++++++++++++++++++++++++++++++++++++++---
t/test-lib.sh | 1 +
7 files changed, 134 insertions(+), 11 deletions(-)
diff --git a/Documentation/config.txt b/Documentation/config.txt
index 953acae..dc1497d 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -162,6 +162,10 @@ repository that ends in "/.git" is assumed to be not bare (bare =
false), while all other repositories are assumed to be bare (bare
= true).
+core.worktree::
+ Path to the working tree when GIT_DIR is set. This can be
+ overriden by GIT_WORK_TREE.
+
core.logAllRefUpdates::
Updates to a ref <ref> is logged to the file
"$GIT_DIR/logs/<ref>", by appending the new and old
diff --git a/Documentation/git.txt b/Documentation/git.txt
index e875e83..e870ac8 100644
--- a/Documentation/git.txt
+++ b/Documentation/git.txt
@@ -10,7 +10,8 @@ SYNOPSIS
--------
[verse]
'git' [--version] [--exec-path[=GIT_EXEC_PATH]] [-p|--paginate]
- [--bare] [--git-dir=GIT_DIR] [--help] COMMAND [ARGS]
+ [--bare] [--git-dir=GIT_DIR] [--work-tree=GIT_WORK_TREE]
+ [--help] COMMAND [ARGS]
DESCRIPTION
-----------
@@ -81,6 +82,14 @@ OPTIONS
Set the path to the repository. This can also be controlled by
setting the GIT_DIR environment variable.
+--work-tree=<path>::
+ Set the path to the working tree. The value will be used only
+ in combination with $GIT_DIR or '--git-dir'. If GIT_DIR is
+ set but this option is not git will assume that the current
+ directory is also the working tree.
+ This can also be controlled by setting the GIT_WORK_TREE
+ environment variable.
+
--bare::
Same as --git-dir=`pwd`.
@@ -325,6 +334,12 @@ git so take care if using Cogito etc.
specifies a path to use instead of the default `.git`
for the base of the repository.
+'GIT_WORK_TREE'::
+ Set the path to the working tree. The value will be used only
+ in combination with $GIT_DIR or '--git-dir'. If GIT_DIR is
+ set but this option is not git will assume that the current
+ directory is also the working tree.
+
git Commits
~~~~~~~~~~~
'GIT_AUTHOR_NAME'::
diff --git a/cache.h b/cache.h
index 3818e10..ced091b 100644
--- a/cache.h
+++ b/cache.h
@@ -144,6 +144,7 @@ enum object_type {
};
#define GIT_DIR_ENVIRONMENT "GIT_DIR"
+#define GIT_WORKING_TREE_ENVIRONMENT "GIT_WORK_TREE"
#define DEFAULT_GIT_DIR_ENVIRONMENT ".git"
#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
@@ -164,6 +165,7 @@ extern char *get_graft_file(void);
#define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES"
+extern int inside_working_tree;
extern const char **get_pathspec(const char *prefix, const char **pathspec);
extern const char *setup_git_directory_gently(int *);
extern const char *setup_git_directory(void);
diff --git a/environment.c b/environment.c
index 0151ad0..208b7aa 100644
--- a/environment.c
+++ b/environment.c
@@ -59,8 +59,15 @@ static void setup_git_env(void)
int is_bare_repository(void)
{
const char *dir, *s;
- if (0 <= is_bare_repository_cfg)
- return is_bare_repository_cfg;
+ /* definitely bare */
+ if (is_bare_repository_cfg == 1)
+ return 1;
+ /* GIT_WORK_TREE is set, bare if cwd is outside */
+ if (inside_working_tree >= 0)
+ return !inside_working_tree;
+ /* configuration says it is not bare */
+ if (is_bare_repository_cfg == 0)
+ return 0;
dir = get_git_dir();
if (!strcmp(dir, DEFAULT_GIT_DIR_ENVIRONMENT))
diff --git a/git.c b/git.c
index dde4d07..9d7eeb3 100644
--- a/git.c
+++ b/git.c
@@ -4,7 +4,7 @@
#include "quote.h"
const char git_usage_string[] =
- "git [--version] [--exec-path[=GIT_EXEC_PATH]] [-p|--paginate] [--bare] [--git-dir=GIT_DIR] [--help] COMMAND [ARGS]";
+ "git [--version] [--exec-path[=GIT_EXEC_PATH]] [-p|--paginate] [--bare] [--git-dir=GIT_DIR] [--work-tree=GIT_WORK_TREE] [--help] COMMAND [ARGS]";
static void prepend_to_path(const char *dir, int len)
{
@@ -68,6 +68,16 @@ static int handle_options(const char*** argv, int* argc)
(*argc)--;
} else if (!prefixcmp(cmd, "--git-dir=")) {
setenv(GIT_DIR_ENVIRONMENT, cmd + 10, 1);
+ } else if (!strcmp(cmd, "--work-tree")) {
+ if (*argc < 2) {
+ fprintf(stderr, "No directory given for --work-tree.\n" );
+ usage(git_usage_string);
+ }
+ setenv(GIT_WORKING_TREE_ENVIRONMENT, (*argv)[1], 1);
+ (*argv)++;
+ (*argc)--;
+ } else if (!prefixcmp(cmd, "--work-tree=")) {
+ setenv(GIT_WORKING_TREE_ENVIRONMENT, cmd + 11, 1);
} else if (!strcmp(cmd, "--bare")) {
static char git_dir[PATH_MAX+1];
setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir, sizeof(git_dir)), 1);
diff --git a/setup.c b/setup.c
index a45ea83..ee0719a 100644
--- a/setup.c
+++ b/setup.c
@@ -192,6 +192,18 @@ int is_inside_git_dir(void)
return inside_git_dir;
}
+static char *git_work_tree;
+
+static int git_work_tree_config(const char *var, const char *value)
+{
+ if (!strcmp(var, "core.worktree")) {
+ strlcpy(git_work_tree, value, PATH_MAX);
+ }
+ return 0;
+}
+
+int inside_working_tree = -1;
+
const char *setup_git_directory_gently(int *nongit_ok)
{
static char cwd[PATH_MAX+1];
@@ -199,21 +211,93 @@ const char *setup_git_directory_gently(int *nongit_ok)
int len, offset;
/*
- * If GIT_DIR is set explicitly, we're not going
- * to do any discovery, but we still do repository
- * validation.
+ * If GIT_DIR is set explicitly, we do repository validation
+ * and check for GIT_WORK_TREE as working tree.
*/
gitdirenv = getenv(GIT_DIR_ENVIRONMENT);
if (gitdirenv) {
+ const char *gitwt;
+ char worktree[PATH_MAX+1], gitdir[PATH_MAX+1];
+ int len;
+ int wt_rel_cwd;
+
if (PATH_MAX - 40 < strlen(gitdirenv))
die("'$%s' too big", GIT_DIR_ENVIRONMENT);
- if (is_git_directory(gitdirenv))
+ if (!is_git_directory(gitdirenv)) {
+ if (nongit_ok) {
+ *nongit_ok = 1;
+ return NULL;
+ }
+ die("Not a git repository: '%s'", gitdirenv);
+ }
+
+ gitwt = getenv(GIT_WORKING_TREE_ENVIRONMENT);
+ wt_rel_cwd = (gitwt && gitwt[0] != '/');
+ /* get worktree from config */
+ if (!gitwt) {
+ wt_rel_cwd = 0;
+ worktree[0] = '\0';
+ git_work_tree = worktree;
+ git_config(git_work_tree_config);
+ git_work_tree = NULL;
+ if (worktree[0])
+ gitwt = worktree;
+ }
+ if (!gitwt)
return NULL;
- if (nongit_ok) {
- *nongit_ok = 1;
+
+ /* run getcwd in cwd, GIT_DIR and GIT_WORK_TREE */
+ if (!getcwd(cwd, sizeof(cwd)-1) || cwd[0] != '/')
+ die("Unable to read current working directory");
+ if (chdir(gitdirenv))
+ die("Cannot change directory to '%s'", gitdirenv);
+ if (!getcwd(gitdir, sizeof(gitdir)-1) || gitdir[0] != '/')
+ die("Unable to read current working directory");
+ /* relative path from old cwd */
+ if (wt_rel_cwd && chdir(cwd))
+ die("Cannot come back to cwd");
+ if (chdir(gitwt)) {
+ if (wt_rel_cwd || gitwt[0] == '/')
+ die("Cannot change directory to working tree "
+ "'%s'", gitwt);
+ else
+ die("Cannot change directory to working tree "
+ "'%s' from $GIT_DIR", gitwt);
+ }
+ if (!getcwd(worktree, sizeof(worktree)-1) || worktree[0] != '/')
+ die("Unable to read current working directory");
+
+ len = strlen(cwd);
+ cwd[len] = '/';
+ cwd[len+1] = '\0';
+
+ len = strlen(worktree);
+ worktree[len] = '/';
+ worktree[len+1] = '\0';
+ inside_working_tree = !prefixcmp(cwd, worktree);
+
+ if (inside_working_tree) {
+ inside_git_dir = 0;
+ } else {
+ len = strlen(gitdir);
+ gitdir[len] = '/';
+ gitdir[len+1] = '\0';
+ inside_git_dir = !prefixcmp(cwd, gitdir);
+ gitdir[len] = '\0';
+ }
+
+ if (!inside_working_tree) {
+ if (chdir(cwd))
+ die("Cannot come back to cwd");
return NULL;
}
- die("Not a git repository: '%s'", gitdirenv);
+ if (gitdirenv[0] != '/')
+ setenv(GIT_DIR_ENVIRONMENT, gitdir, 1);
+
+ len = strlen(worktree);
+ if (cwd[len] == '\0')
+ return NULL;
+ return cwd+len;
}
if (!getcwd(cwd, sizeof(cwd)-1) || cwd[0] != '/')
diff --git a/t/test-lib.sh b/t/test-lib.sh
index c075474..77c6d23 100755
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -25,6 +25,7 @@ GIT_COMMITTER_EMAIL=committer@xxxxxxxxxxx
GIT_COMMITTER_NAME='C O Mitter'
unset GIT_DIFF_OPTS
unset GIT_DIR
+unset GIT_WORK_TREE
unset GIT_EXTERNAL_DIFF
unset GIT_INDEX_FILE
unset GIT_OBJECT_DIRECTORY
--
1.5.0.4.414.g32da9
-
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