unpack-trees: allow Porcelain to give different error messages

diff --git a/pack-write.c b/pack-write.c
index 665e2b29b8817aa6a8aa83ccd859ab51e7bb2234..c66c8af725f6d37b4edaeab75eebac7a387f4922 100644 (file)
--- a/pack-write.c
+++ b/pack-write.c
@@ -183,7 +183,6 @@ void fixup_pack_header_footer(int pack_fd,
 
 char *index_pack_lockfile(int ip_out)
 {
-       int len, s;
        char packname[46];
 
        /*
@@ -193,11 +192,8 @@ char *index_pack_lockfile(int ip_out)
         * 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) {
+       if (read_in_full(ip_out, packname, 46) == 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",