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-rw-r--r--cache.h6
-rw-r--r--sha1_file.c28
-rw-r--r--sha1_name.c7
3 files changed, 26 insertions, 15 deletions
diff --git a/cache.h b/cache.h
index 258ce6b0f0..ece2c7c9b8 100644
--- a/cache.h
+++ b/cache.h
@@ -1393,6 +1393,12 @@ typedef int alt_odb_fn(struct alternate_object_database *, void *);
extern int foreach_alt_odb(alt_odb_fn, void*);
/*
+ * Allocate a "struct alternate_object_database" but do _not_ actually
+ * add it to the list of alternates.
+ */
+struct alternate_object_database *alloc_alt_odb(const char *dir);
+
+/*
* Add the directory to the on-disk alternates file; the new entry will also
* take effect in the current process.
*/
diff --git a/sha1_file.c b/sha1_file.c
index 7a3b745448..636d07ad14 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -283,7 +283,6 @@ static int link_alt_odb_entry(const char *entry, const char *relative_base,
int depth, const char *normalized_objdir)
{
struct alternate_object_database *ent;
- size_t entlen;
struct strbuf pathbuf = STRBUF_INIT;
if (!is_absolute_path(entry) && relative_base) {
@@ -311,14 +310,7 @@ static int link_alt_odb_entry(const char *entry, const char *relative_base,
return -1;
}
- entlen = st_add(pathbuf.len, 43); /* '/' + 2 hex + '/' + 38 hex + NUL */
- ent = xmalloc(st_add(sizeof(*ent), entlen));
- memcpy(ent->base, pathbuf.buf, pathbuf.len);
-
- ent->name = ent->base + pathbuf.len + 1;
- ent->base[pathbuf.len] = '/';
- ent->base[pathbuf.len + 3] = '/';
- ent->base[entlen-1] = 0;
+ ent = alloc_alt_odb(pathbuf.buf);
/* add the alternate entry */
*alt_odb_tail = ent;
@@ -395,6 +387,24 @@ void read_info_alternates(const char * relative_base, int depth)
munmap(map, mapsz);
}
+struct alternate_object_database *alloc_alt_odb(const char *dir)
+{
+ struct alternate_object_database *ent;
+ size_t dirlen = strlen(dir);
+ size_t entlen;
+
+ entlen = st_add(dirlen, 43); /* '/' + 2 hex + '/' + 38 hex + NUL */
+ ent = xmalloc(st_add(sizeof(*ent), entlen));
+ memcpy(ent->base, dir, dirlen);
+
+ ent->name = ent->base + dirlen + 1;
+ ent->base[dirlen] = '/';
+ ent->base[dirlen + 3] = '/';
+ ent->base[entlen-1] = 0;
+
+ return ent;
+}
+
void add_to_alternates_file(const char *reference)
{
struct lock_file *lock = xcalloc(1, sizeof(struct lock_file));
diff --git a/sha1_name.c b/sha1_name.c
index faf873cf7f..98152a68ba 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -86,12 +86,7 @@ static void find_short_object_filename(int len, const char *hex_pfx, struct disa
* alt->name/alt->base while iterating over the
* object databases including our own.
*/
- const char *objdir = get_object_directory();
- size_t objdir_len = strlen(objdir);
- fakeent = xmalloc(st_add3(sizeof(*fakeent), objdir_len, 43));
- memcpy(fakeent->base, objdir, objdir_len);
- fakeent->name = fakeent->base + objdir_len + 1;
- fakeent->name[-1] = '/';
+ fakeent = alloc_alt_odb(get_object_directory());
}
fakeent->next = alt_odb_list;