diff options
Diffstat (limited to 'sha1_file.c')
| -rw-r--r-- | sha1_file.c | 51 |
1 files changed, 41 insertions, 10 deletions
diff --git a/sha1_file.c b/sha1_file.c index 67e815b..4c2365f 100644 --- a/sha1_file.c +++ b/sha1_file.c @@ -36,6 +36,9 @@ static inline uintmax_t sz_fmt(size_t s) { return s; } const unsigned char null_sha1[20]; +static const char *no_log_pack_access = "no_log_pack_access"; +static const char *log_pack_access; + /* * This is meant to hold a *small* number of objects that you would * want read_sha1_file() to be able to return, but yet you do not want @@ -1694,7 +1697,8 @@ static int retry_bad_packed_offset(struct packed_git *p, off_t obj_offset) #define POI_STACK_PREALLOC 64 static int packed_object_info(struct packed_git *p, off_t obj_offset, - unsigned long *sizep, int *rtype) + unsigned long *sizep, int *rtype, + unsigned long *disk_sizep) { struct pack_window *w_curs = NULL; unsigned long size; @@ -1728,6 +1732,11 @@ static int packed_object_info(struct packed_git *p, off_t obj_offset, } } + if (disk_sizep) { + struct revindex_entry *revidx = find_pack_revindex(p, obj_offset); + *disk_sizep = revidx[1].offset - obj_offset; + } + while (type == OBJ_OFS_DELTA || type == OBJ_REF_DELTA) { off_t base_offset; /* Push the object we're going to leave behind */ @@ -1956,12 +1965,19 @@ static void write_pack_access_log(struct packed_git *p, off_t obj_offset) { static FILE *log_file; + if (!log_pack_access) + log_pack_access = getenv("GIT_TRACE_PACK_ACCESS"); + if (!log_pack_access) + log_pack_access = no_log_pack_access; + if (log_pack_access == no_log_pack_access) + return; + if (!log_file) { log_file = fopen(log_pack_access, "w"); if (!log_file) { error("cannot open pack access log '%s' for writing: %s", log_pack_access, strerror(errno)); - log_pack_access = NULL; + log_pack_access = no_log_pack_access; return; } } @@ -1992,7 +2008,7 @@ void *unpack_entry(struct packed_git *p, off_t obj_offset, int delta_stack_nr = 0, delta_stack_alloc = UNPACK_ENTRY_STACK_PREALLOC; int base_from_cache = 0; - if (log_pack_access) + if (log_pack_access != no_log_pack_access) write_pack_access_log(p, obj_offset); /* PHASE 1: drill down to the innermost base object */ @@ -2135,10 +2151,19 @@ void *unpack_entry(struct packed_git *p, off_t obj_offset, data = patch_delta(base, base_size, delta_data, delta_size, &size); + + /* + * We could not apply the delta; warn the user, but keep going. + * Our failure will be noticed either in the next iteration of + * the loop, or if this is the final delta, in the caller when + * we return NULL. Those code paths will take care of making + * a more explicit warning and retrying with another copy of + * the object. + */ if (!data) - die("failed to apply delta"); + error("failed to apply delta"); - free (delta_data); + free(delta_data); } *final_type = type; @@ -2338,7 +2363,8 @@ struct packed_git *find_sha1_pack(const unsigned char *sha1, } -static int sha1_loose_object_info(const unsigned char *sha1, unsigned long *sizep) +static int sha1_loose_object_info(const unsigned char *sha1, unsigned long *sizep, + unsigned long *disk_sizep) { int status; unsigned long mapsize, size; @@ -2348,7 +2374,9 @@ static int sha1_loose_object_info(const unsigned char *sha1, unsigned long *size map = map_sha1_file(sha1, &mapsize); if (!map) - return error("unable to find %s", sha1_to_hex(sha1)); + return -1; + if (disk_sizep) + *disk_sizep = mapsize; if (unpack_sha1_header(&stream, map, mapsize, hdr, sizeof(hdr)) < 0) status = error("unable to unpack %s header", sha1_to_hex(sha1)); @@ -2372,13 +2400,15 @@ int sha1_object_info_extended(const unsigned char *sha1, struct object_info *oi) if (co) { if (oi->sizep) *(oi->sizep) = co->size; + if (oi->disk_sizep) + *(oi->disk_sizep) = 0; oi->whence = OI_CACHED; return co->type; } if (!find_pack_entry(sha1, &e)) { /* Most likely it's a loose object. */ - status = sha1_loose_object_info(sha1, oi->sizep); + status = sha1_loose_object_info(sha1, oi->sizep, oi->disk_sizep); if (status >= 0) { oi->whence = OI_LOOSE; return status; @@ -2390,7 +2420,8 @@ int sha1_object_info_extended(const unsigned char *sha1, struct object_info *oi) return status; } - status = packed_object_info(e.p, e.offset, oi->sizep, &rtype); + status = packed_object_info(e.p, e.offset, oi->sizep, &rtype, + oi->disk_sizep); if (status < 0) { mark_bad_packed_object(e.p, sha1); status = sha1_object_info_extended(sha1, oi); @@ -2409,7 +2440,7 @@ int sha1_object_info_extended(const unsigned char *sha1, struct object_info *oi) int sha1_object_info(const unsigned char *sha1, unsigned long *sizep) { - struct object_info oi; + struct object_info oi = {0}; oi.sizep = sizep; return sha1_object_info_extended(sha1, &oi); |