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-rw-r--r--pack-write.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/pack-write.c b/pack-write.c
index e59b197e5e..979bdfff7c 100644
--- a/pack-write.c
+++ b/pack-write.c
@@ -179,3 +179,29 @@ void fixup_pack_header_footer(int pack_fd,
SHA1_Final(pack_file_sha1, &c);
write_or_die(pack_fd, pack_file_sha1, 20);
}
+
+char *index_pack_lockfile(int ip_out)
+{
+ int len, s;
+ char packname[46];
+
+ /*
+ * The first thing we expects from index-pack's output
+ * is "pack\t%40s\n" or "keep\t%40s\n" (46 bytes) where
+ * %40s is the newly created pack SHA1 name. In the "keep"
+ * case, we need it to remove the corresponding .keep file
+ * later on. If we don't get that then tough luck with it.
+ */
+ for (len = 0;
+ len < 46 && (s = xread(ip_out, packname+len, 46-len)) > 0;
+ len += s);
+ if (len == 46 && packname[45] == '\n' &&
+ memcmp(packname, "keep\t", 5) == 0) {
+ char path[PATH_MAX];
+ packname[45] = 0;
+ snprintf(path, sizeof(path), "%s/pack/pack-%s.keep",
+ get_object_directory(), packname + 5);
+ return xstrdup(path);
+ }
+ return NULL;
+}