docs/diff-options: clarify scope of diff-filter types

diff --git a/pack-check.c b/pack-check.c
index 1da89a41cec9e605fc3fdfa8efaaf2489e501c88..27f70d345fbf1b339cb4bad1011253cece1bf619 100644 (file)
--- a/pack-check.c
+++ b/pack-check.c
@@ -57,11 +57,8 @@ static int verify_packfile(struct packed_git *p,
        int err = 0;
        struct idx_entry *entries;
 
-       /* Note that the pack header checks are actually performed by
-        * use_pack when it first opens the pack file.  If anything
-        * goes wrong during those checks then the call will die out
-        * immediately.
-        */
+       if (!is_pack_valid(p))
+               return error("packfile %s cannot be accessed", p->pack_name);
 
        git_SHA1_Init(&ctx);
        do {
@@ -99,12 +96,14 @@ static int verify_packfile(struct packed_git *p,
                entries[i].offset = nth_packed_object_offset(p, i);
                entries[i].nr = i;
        }
-       qsort(entries, nr_objects, sizeof(*entries), compare_entries);
+       QSORT(entries, nr_objects, compare_entries);
 
        for (i = 0; i < nr_objects; i++) {
                void *data;
                enum object_type type;
                unsigned long size;
+               off_t curpos;
+               int data_valid;
 
                if (p->index_version > 1) {
                        off_t offset = entries[i].offset;
@@ -116,8 +115,25 @@ static int verify_packfile(struct packed_git *p,
                                            sha1_to_hex(entries[i].sha1),
                                            p->pack_name, (uintmax_t)offset);
                }
-               data = unpack_entry(p, entries[i].offset, &type, &size);
-               if (!data)
+
+               curpos = entries[i].offset;
+               type = unpack_object_header(p, w_curs, &curpos, &size);
+               unuse_pack(w_curs);
+
+               if (type == OBJ_BLOB && big_file_threshold <= size) {
+                       /*
+                        * Let check_sha1_signature() check it with
+                        * the streaming interface; no point slurping
+                        * the data in-core only to discard.
+                        */
+                       data = NULL;
+                       data_valid = 0;
+               } else {
+                       data = unpack_entry(p, entries[i].offset, &type, &size);
+                       data_valid = 1;
+               }
+
+               if (data_valid && !data)
                        err = error("cannot unpack %s from %s at offset %"PRIuMAX"",
                                    sha1_to_hex(entries[i].sha1), p->pack_name,
                                    (uintmax_t)entries[i].offset);