diff options
| -rw-r--r-- | builtin/pack-objects.c | 55 |
1 files changed, 43 insertions, 12 deletions
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c index 558cd34bcc..b1895aaaa1 100644 --- a/builtin/pack-objects.c +++ b/builtin/pack-objects.c @@ -409,25 +409,56 @@ static unsigned long write_object(struct sha1file *f, return hdrlen + datalen; } -static int write_one(struct sha1file *f, - struct object_entry *e, - off_t *offset) +enum write_one_status { + WRITE_ONE_SKIP = -1, /* already written */ + WRITE_ONE_BREAK = 0, /* writing this will bust the limit; not written */ + WRITE_ONE_WRITTEN = 1, /* normal */ + WRITE_ONE_RECURSIVE = 2 /* already scheduled to be written */ +}; + +static enum write_one_status write_one(struct sha1file *f, + struct object_entry *e, + off_t *offset) { unsigned long size; + int recursing; - /* offset is non zero if object is written already. */ - if (e->idx.offset || e->preferred_base) - return -1; + /* + * we set offset to 1 (which is an impossible value) to mark + * the fact that this object is involved in "write its base + * first before writing a deltified object" recursion. + */ + recursing = (e->idx.offset == 1); + if (recursing) { + warning("recursive delta detected for object %s", + sha1_to_hex(e->idx.sha1)); + return WRITE_ONE_RECURSIVE; + } else if (e->idx.offset || e->preferred_base) { + /* offset is non zero if object is written already. */ + return WRITE_ONE_SKIP; + } /* if we are deltified, write out base object first. */ - if (e->delta && !write_one(f, e->delta, offset)) - return 0; + if (e->delta) { + e->idx.offset = 1; /* now recurse */ + switch (write_one(f, e->delta, offset)) { + case WRITE_ONE_RECURSIVE: + /* we cannot depend on this one */ + e->delta = NULL; + break; + default: + break; + case WRITE_ONE_BREAK: + e->idx.offset = recursing; + return WRITE_ONE_BREAK; + } + } e->idx.offset = *offset; size = write_object(f, e, *offset); if (!size) { - e->idx.offset = 0; - return 0; + e->idx.offset = recursing; + return WRITE_ONE_BREAK; } written_list[nr_written++] = &e->idx; @@ -435,7 +466,7 @@ static int write_one(struct sha1file *f, if (signed_add_overflows(*offset, size)) die("pack too large for current definition of off_t"); *offset += size; - return 1; + return WRITE_ONE_WRITTEN; } static int mark_tagged(const char *path, const unsigned char *sha1, int flag, @@ -640,7 +671,7 @@ static void write_pack_file(void) nr_written = 0; for (; i < nr_objects; i++) { struct object_entry *e = write_order[i]; - if (!write_one(f, e, &offset)) + if (write_one(f, e, &offset) == WRITE_ONE_BREAK) break; display_progress(progress_state, written); } |