shared repository: optionally allow reading to "others".

This enhances core.sharedrepository to have additionally
specify that read and exec permissions to be given to others as
well.  It is useful when serving a repository via gitweb and
git-daemon that runs as a user outside the project group.

The configuration item can take the following values:

    [core]
	sharedrepository 	 ; the same as "group"
	sharedrepository = true  ; ditto
	sharedrepository = 1	 ; ditto
	sharedrepository = group ; allow rwx to group
	sharedrepository = all   ; allow rwx to group, allow rx to other
	sharedrepository = umask ; not shared - use umask

It also extends "git init-db" to take "--shared=all" and friends
from the command line.

Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 16 insertions, 1 deletions

diff --git a/setup.c b/setup.c
index fe7f884696..4612f110ee 100644
--- a/setup.c
+++ b/setup.c
@@ -219,12 +219,27 @@ const char *setup_git_directory_gently(int *nongit_ok)
 	return cwd + offset;
 }
 
+int git_config_perm(const char *var, const char *value)
+{
+	if (value) {
+		if (!strcmp(value, "umask"))
+			return PERM_UMASK;
+		if (!strcmp(value, "group"))
+			return PERM_GROUP;
+		if (!strcmp(value, "all") ||
+		    !strcmp(value, "world") ||
+		    !strcmp(value, "everybody"))
+			return PERM_EVERYBODY;
+	}
+	return git_config_bool(var, value);
+}
+
 int check_repository_format_version(const char *var, const char *value)
 {
        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_bool(var, value);
+		shared_repository = git_config_perm(var, value);
        return 0;
 }