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, 12 insertions, 2 deletions

diff --git a/path.c b/path.c
index 5168b5f17..5d82503b6 100644
--- a/path.c
+++ b/path.c
@@ -262,11 +262,21 @@ int adjust_shared_perm(const char *path)
 		return -1;
 	mode = st.st_mode;
 	if (mode & S_IRUSR)
-		mode |= S_IRGRP;
+		mode |= (shared_repository == PERM_GROUP
+			 ? S_IRGRP
+			 : (shared_repository == PERM_EVERYBODY
+			    ? (S_IRGRP|S_IROTH)
+			    : 0));
+
 	if (mode & S_IWUSR)
 		mode |= S_IWGRP;
+
 	if (mode & S_IXUSR)
-		mode |= S_IXGRP;
+		mode |= (shared_repository == PERM_GROUP
+			 ? S_IXGRP
+			 : (shared_repository == PERM_EVERYBODY
+			    ? (S_IXGRP|S_IXOTH)
+			    : 0));
 	if (S_ISDIR(mode))
 		mode |= S_ISGID;
 	if (chmod(path, mode) < 0)