[PATCH 6/6] Add check for downgrading of repo format version via init-db

From

MAMartin Atukunda <matlads@dsmagic.com>

Date

Nov 22, 2005, 00:28 UTC

Message-ID

<11326192931463-git-send-email-matlads@dsmagic.com>

In-Reply-To

<11326192921291-git-send-email-matlads@dsmagic.com>

Signed-Off-By: Martin Atukunda <matlads@dsmagic.com>

---

 init-db.c |   41 +++++++++++++++++++++++++++++++++++++++--
 1 files changed, 39 insertions(+), 2 deletions(-)

diff --git a/init-db.c b/init-db.c
index 90be428..d1fc142 100644
--- a/init-db.c
+++ b/init-db.c
@@ -110,6 +110,15 @@ static void copy_templates_1(char *path,
 	}
 }
 
+static int check_repo_config(const char *var, const char *value)
+{
+       if (strcmp(var, "core.repositoryformatversion") == 0) {
+               repository_format_version = git_config_int(var, value);
+               return 0;
+       }
+       return 1;
+}
+
 static int init_db_config_check(const char *template_path)
 {
 	DIR *dir;
@@ -117,8 +126,36 @@ static int init_db_config_check(const ch
 
 	dir = opendir(template_path);
 	while((de = readdir(dir)) != NULL) {
-		if ((strncmp(de->d_name, "config", 5) == 0))
-			return check_repo_format();
+		if ((strncmp(de->d_name, "config", 5) == 0)) {
+			int rfv1, rfv2;
+			char cpath[PATH_MAX];
+			check_repo_format();
+
+			/* is the file we are copying friendly? */
+			rfv1 = repository_format_version;
+			snprintf(cpath, sizeof(cpath), "%s%s", template_path,
+				de->d_name);
+			git_config_from_file(cpath, check_repo_config);
+			rfv2 = repository_format_version;
+			if (rfv1 == rfv2) {
+				break;
+			}
+			if (rfv2 < rfv1) {
+				/* the repo format specified in the conf file
+				 * we are copying is older than the repo we
+				 * are re-initialising! Downgrading?
+				 */
+				fprintf(stderr, "Possibly downgrading repo"
+					" format version from %d to %d. Check"
+					" config template file!\n", rfv1, rfv2);
+				break;
+			} else 
+				/* OK we die */
+				die ("Won't copy config file"
+					" for repo format version %d over"
+					" one for version %d",
+					rfv2, rfv1);
+		}
 	}
 	return 0;
 }
---
0.99.9.GIT