diff --check: do not discard error status upon seeing a good line

diff --git a/pack-check.c b/pack-check.c
index 0f8ad2c00f21d9a0a64b541ed95fff91650d7175..f4898732dd8cd8ad2d8599cb13e0d9d96dda753b 100644 (file)
--- a/pack-check.c
+++ b/pack-check.c
@@ -25,10 +25,10 @@ static int verify_packfile(struct packed_git *p,
        off_t index_size = p->index_size;
        const unsigned char *index_base = p->index_data;
        SHA_CTX ctx;
-       unsigned char sha1[20];
-       off_t offset = 0, pack_sig = p->pack_size - 20;
+       unsigned char sha1[20], *pack_sig;
+       off_t offset = 0, pack_sig_ofs = p->pack_size - 20;
        uint32_t nr_objects, i;
-       int err;
+       int err = 0;
        struct idx_entry *entries;
 
        /* Note that the pack header checks are actually performed by
@@ -38,21 +38,22 @@ static int verify_packfile(struct packed_git *p,
         */
 
        SHA1_Init(&ctx);
-       while (offset < pack_sig) {
+       while (offset < pack_sig_ofs) {
                unsigned int remaining;
                unsigned char *in = use_pack(p, w_curs, offset, &remaining);
                offset += remaining;
-               if (offset > pack_sig)
-                       remaining -= (unsigned int)(offset - pack_sig);
+               if (offset > pack_sig_ofs)
+                       remaining -= (unsigned int)(offset - pack_sig_ofs);
                SHA1_Update(&ctx, in, remaining);
        }
        SHA1_Final(sha1, &ctx);
-       if (hashcmp(sha1, use_pack(p, w_curs, pack_sig, NULL)))
-               return error("Packfile %s SHA1 mismatch with itself",
-                            p->pack_name);
-       if (hashcmp(sha1, index_base + index_size - 40))
-               return error("Packfile %s SHA1 mismatch with idx",
-                            p->pack_name);
+       pack_sig = use_pack(p, w_curs, pack_sig_ofs, NULL);
+       if (hashcmp(sha1, pack_sig))
+               err = error("%s SHA1 checksum mismatch",
+                           p->pack_name);
+       if (hashcmp(index_base + index_size - 40, pack_sig))
+               err = error("%s SHA1 does not match its inddex",
+                           p->pack_name);
        unuse_pack(w_curs);
 
        /* Make sure everything reachable from idx is valid.  Since we
@@ -72,22 +73,23 @@ static int verify_packfile(struct packed_git *p,
        }
        qsort(entries, nr_objects, sizeof(*entries), compare_entries);
 
-       for (i = 0, err = 0; i < nr_objects; i++) {
+       for (i = 0; i < nr_objects; i++) {
                void *data;
                enum object_type type;
                unsigned long size;
 
                data = unpack_entry(p, entries[i].offset, &type, &size);
                if (!data) {
-                       err = error("cannot unpack %s from %s",
-                                   sha1_to_hex(entries[i].sha1), p->pack_name);
-                       continue;
+                       err = error("cannot unpack %s from %s at offset %"PRIuMAX"",
+                                   sha1_to_hex(entries[i].sha1), p->pack_name,
+                                   (uintmax_t)entries[i].offset);
+                       break;
                }
                if (check_sha1_signature(entries[i].sha1, data, size, typename(type))) {
                        err = error("packed %s from %s is corrupt",
                                    sha1_to_hex(entries[i].sha1), p->pack_name);
                        free(data);
-                       continue;
+                       break;
                }
                free(data);
        }
@@ -158,31 +160,28 @@ int verify_pack(struct packed_git *p, int verbose)
        const unsigned char *index_base;
        SHA_CTX ctx;
        unsigned char sha1[20];
-       int ret;
+       int err = 0;
+       struct pack_window *w_curs = NULL;
 
        if (open_pack_index(p))
                return error("packfile %s index not opened", p->pack_name);
        index_size = p->index_size;
        index_base = p->index_data;
 
-       ret = 0;
        /* Verify SHA1 sum of the index file */
        SHA1_Init(&ctx);
        SHA1_Update(&ctx, index_base, (unsigned int)(index_size - 20));
        SHA1_Final(sha1, &ctx);
        if (hashcmp(sha1, index_base + index_size - 20))
-               ret = error("Packfile index for %s SHA1 mismatch",
+               err = error("Packfile index for %s SHA1 mismatch",
                            p->pack_name);
 
-       if (!ret) {
-               /* Verify pack file */
-               struct pack_window *w_curs = NULL;
-               ret = verify_packfile(p, &w_curs);
-               unuse_pack(&w_curs);
-       }
+       /* Verify pack file */
+       err |= verify_packfile(p, &w_curs);
+       unuse_pack(&w_curs);
 
        if (verbose) {
-               if (ret)
+               if (err)
                        printf("%s: bad\n", p->pack_name);
                else {
                        show_pack_info(p);
@@ -190,5 +189,5 @@ int verify_pack(struct packed_git *p, int verbose)
                }
        }
 
-       return ret;
+       return err;
 }