stream.total_in == len) ? 0 : -1;
}
-static int check_pack_crc(struct packed_git *p, struct pack_window **w_curs,
- off_t offset, off_t len, unsigned int nr)
-{
- const uint32_t *index_crc;
- uint32_t data_crc = crc32(0, Z_NULL, 0);
-
- do {
- unsigned int avail;
- void *data = use_pack(p, w_curs, offset, &avail);
- if (avail > len)
- avail = len;
- data_crc = crc32(data_crc, data, avail);
- offset += avail;
- len -= avail;
- } while (len);
-
- index_crc = p->index_data;
- index_crc += 2 + 256 + p->num_objects * (20/4) + nr;
-
- return data_crc != ntohl(*index_crc);
-}
-
static void copy_pack_data(struct sha1file *f,
struct packed_git *p,
struct pack_window **w_curs,
struct idx_entry
{
- const unsigned char *sha1;
off_t offset;
+ const unsigned char *sha1;
+ unsigned int nr;
};
static int compare_entries(const void *e1, const void *e2)
return 0;
}
+int check_pack_crc(struct packed_git *p, struct pack_window **w_curs,
+ off_t offset, off_t len, unsigned int nr)
+{
+ const uint32_t *index_crc;
+ uint32_t data_crc = crc32(0, Z_NULL, 0);
+
+ do {
+ unsigned int avail;
+ void *data = use_pack(p, w_curs, offset, &avail);
+ if (avail > len)
+ avail = len;
+ data_crc = crc32(data_crc, data, avail);
+ offset += avail;
+ len -= avail;
+ } while (len);
+
+ index_crc = p->index_data;
+ index_crc += 2 + 256 + p->num_objects * (20/4) + nr;
+
+ return data_crc != ntohl(*index_crc);
+}
+
static int verify_packfile(struct packed_git *p,
struct pack_window **w_curs)
{
* we do not do scan-streaming check on the pack file.
*/
nr_objects = p->num_objects;
- entries = xmalloc(nr_objects * sizeof(*entries));
+ entries = xmalloc((nr_objects + 1) * sizeof(*entries));
+ entries[nr_objects].offset = pack_sig_ofs;
/* first sort entries by pack offset, since unpacking them is more efficient that way */
for (i = 0; i < nr_objects; i++) {
entries[i].sha1 = nth_packed_object_sha1(p, i);
if (!entries[i].sha1)
die("internal error pack-check nth-packed-object");
entries[i].offset = nth_packed_object_offset(p, i);
+ entries[i].nr = i;
}
qsort(entries, nr_objects, sizeof(*entries), compare_entries);
enum object_type type;
unsigned long size;
+ if (p->index_version > 1) {
+ off_t offset = entries[i].offset;
+ off_t len = entries[i+1].offset - offset;
+ unsigned int nr = entries[i].nr;
+ if (check_pack_crc(p, w_curs, offset, len, nr))
+ err = error("index CRC mismatch for object %s "
+ "from %s at offset %"PRIuMAX"",
+ sha1_to_hex(entries[i].sha1),
+ p->pack_name, (uintmax_t)offset);
+ }
data = unpack_entry(p, entries[i].offset, &type, &size);
if (!data) {
err = error("cannot unpack %s from %s at offset %"PRIuMAX"",
};
extern char *write_idx_file(char *index_name, struct pack_idx_entry **objects, int nr_objects, unsigned char *sha1);
-
+extern int check_pack_crc(struct packed_git *p, struct pack_window **w_curs, off_t offset, off_t len, unsigned int nr);
extern int verify_pack(struct packed_git *);
extern void fixup_pack_header_footer(int, unsigned char *, const char *, uint32_t);
extern char *index_pack_lockfile(int fd);