[PATCH 2/3] packed_git: add new PACK_KEEP flag and haspackkeep() access macro

[drafnel@gmail.com]

From: Brandon Casey <drafnel@gmail.com>

If you want to tell whether a pack has an associated ".keep" file you
would do:

   if (haspackkeep(p))
      do_something

Signed-off-by: Brandon Casey <drafnel@gmail.com>
---
 cache.h     |    2 ++
 sha1_file.c |    5 +++++
 2 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/cache.h b/cache.h
index 0cb9350..48cd366 100644
--- a/cache.h
+++ b/cache.h
@@ -686,7 +686,9 @@ extern struct packed_git {
 } *packed_git;
 
 #define PACK_LOCAL	1
+#define PACK_KEEP	2
 #define ispacklocal(p) ((p)->flags & PACK_LOCAL)
+#define haspackkeep(p) ((p)->flags & PACK_KEEP)
 
 struct pack_entry {
 	off_t offset;
diff --git a/sha1_file.c b/sha1_file.c
index e4141c9..8a027e9 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -841,6 +841,11 @@ struct packed_git *add_packed_git(const char *path, int path_len, int local)
 		return NULL;
 	}
 	memcpy(p->pack_name, path, path_len);
+
+	strcpy(p->pack_name + path_len, ".keep");
+	if (!access(p->pack_name, F_OK))
+		p->flags |= PACK_KEEP;
+
 	strcpy(p->pack_name + path_len, ".pack");
 	if (stat(p->pack_name, &st) || !S_ISREG(st.st_mode)) {
 		free(p);
-- 
1.6.0.2.588.g3102