X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=setup.c;h=adede16a4deea1423f52c3b736de735d27f7172a;hb=752527f51396886c4ca11a14bfcecf2167ed4c40;hp=06004f15874fbcbab50eafd272c5898a34fcdcfe;hpb=63f328290a0edda617c0881a356c07280fbba459;p=git.git

diff --git a/setup.c b/setup.c
index 06004f158..adede16a4 100644
--- a/setup.c
+++ b/setup.c
@@ -59,7 +59,7 @@ const char *prefix_path(const char *prefix, int len, const char *path)
 const char *prefix_filename(const char *pfx, int pfx_len, const char *arg)
 {
 	static char path[PATH_MAX];
-	if (!pfx || !*pfx || arg[0] == '/')
+	if (!pfx || !*pfx || is_absolute_path(arg))
 		return arg;
 	memcpy(path, pfx, pfx_len);
 	strcpy(path + pfx_len, arg);
@@ -140,7 +140,7 @@ const char **get_pathspec(const char *prefix, const char **pathspec)
  * Test if it looks like we're at a git directory.
  * We want to see:
  *
- *  - either a objects/ directory _or_ the proper
+ *  - either an objects/ directory _or_ the proper
  *    GIT_OBJECT_DIRECTORY environment variable
  *  - a refs/ directory
  *  - either a HEAD symlink or a HEAD file that is formatted as
@@ -206,6 +206,38 @@ static const char *set_work_tree(const char *dir)
 	return NULL;
 }
 
+void setup_work_tree(void)
+{
+	const char *work_tree, *git_dir;
+	static int initialized = 0;
+
+	if (initialized)
+		return;
+	work_tree = get_git_work_tree();
+	git_dir = get_git_dir();
+	if (!is_absolute_path(git_dir))
+		set_git_dir(make_absolute_path(git_dir));
+	if (!work_tree || chdir(work_tree))
+		die("This operation must be run in a work tree");
+	initialized = 1;
+}
+
+static int check_repository_format_gently(int *nongit_ok)
+{
+	git_config(check_repository_format_version);
+	if (GIT_REPO_VERSION < repository_format_version) {
+		if (!nongit_ok)
+			die ("Expected git repo version <= %d, found %d",
+			     GIT_REPO_VERSION, repository_format_version);
+		warning("Expected git repo version <= %d, found %d",
+			GIT_REPO_VERSION, repository_format_version);
+		warning("Please upgrade Git");
+		*nongit_ok = -1;
+		return -1;
+	}
+	return 0;
+}
+
 /*
  * We cannot decide in this function whether we are in the work tree or
  * not, since the config can only be read _after_ this function was called.
@@ -227,9 +259,27 @@ const char *setup_git_directory_gently(int *nongit_ok)
 		if (PATH_MAX - 40 < strlen(gitdirenv))
 			die("'$%s' too big", GIT_DIR_ENVIRONMENT);
 		if (is_git_directory(gitdirenv)) {
-			if (!work_tree_env)
-				return set_work_tree(gitdirenv);
-			return NULL;
+			static char buffer[1024 + 1];
+			const char *retval;
+
+			if (!work_tree_env) {
+				retval = set_work_tree(gitdirenv);
+				/* config may override worktree */
+				if (check_repository_format_gently(nongit_ok))
+					return NULL;
+				return retval;
+			}
+			if (check_repository_format_gently(nongit_ok))
+				return NULL;
+			retval = get_relative_cwd(buffer, sizeof(buffer) - 1,
+					get_git_work_tree());
+			if (!retval || !*retval)
+				return NULL;
+			set_git_dir(make_absolute_path(gitdirenv));
+			if (chdir(work_tree_env) < 0)
+				die ("Could not chdir to %s", work_tree_env);
+			strcat(buffer, "/");
+			return retval;
 		}
 		if (nongit_ok) {
 			*nongit_ok = 1;
@@ -259,6 +309,7 @@ const char *setup_git_directory_gently(int *nongit_ok)
 			if (!work_tree_env)
 				inside_work_tree = 0;
 			setenv(GIT_DIR_ENVIRONMENT, ".", 1);
+			check_repository_format_gently(nongit_ok);
 			return NULL;
 		}
 		chdir("..");
@@ -279,6 +330,8 @@ const char *setup_git_directory_gently(int *nongit_ok)
 	if (!work_tree_env)
 		inside_work_tree = 1;
 	git_work_tree_cfg = xstrndup(cwd, offset);
+	if (check_repository_format_gently(nongit_ok))
+		return NULL;
 	if (offset == len)
 		return NULL;
 
@@ -329,17 +382,12 @@ int check_repository_format_version(const char *var, const char *value)
 
 int check_repository_format(void)
 {
-	git_config(check_repository_format_version);
-	if (GIT_REPO_VERSION < repository_format_version)
-		die ("Expected git repo version <= %d, found %d",
-		     GIT_REPO_VERSION, repository_format_version);
-	return 0;
+	return check_repository_format_gently(NULL);
 }
 
 const char *setup_git_directory(void)
 {
 	const char *retval = setup_git_directory_gently(NULL);
-	check_repository_format();
 
 	/* If the work tree is not the default one, recompute prefix */
 	if (inside_work_tree < 0) {