diff options
Diffstat (limited to 'read-cache.c')
| -rw-r--r-- | read-cache.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/read-cache.c b/read-cache.c index 33dd676ccb..efc4aaed98 100644 --- a/read-cache.c +++ b/read-cache.c @@ -1219,6 +1219,25 @@ static struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int reall #define INDEX_FORMAT_DEFAULT 3 +static unsigned int get_index_format_default(void) +{ + char *envversion = getenv("GIT_INDEX_VERSION"); + if (!envversion) { + return INDEX_FORMAT_DEFAULT; + } else { + char *endp; + unsigned int version = strtoul(envversion, &endp, 10); + + if (*endp || + version < INDEX_FORMAT_LB || INDEX_FORMAT_UB < version) { + warning(_("GIT_INDEX_VERSION set, but the value is invalid.\n" + "Using version %i"), INDEX_FORMAT_DEFAULT); + version = INDEX_FORMAT_DEFAULT; + } + return version; + } +} + /* * dev/ino/uid/gid/size are also just tracked to the low 32 bits * Again - this is just a (very strong in practice) heuristic that @@ -1795,7 +1814,7 @@ int write_index(struct index_state *istate, int newfd) } if (!istate->version) - istate->version = INDEX_FORMAT_DEFAULT; + istate->version = get_index_format_default(); /* demote version 3 to version 2 when the latter suffices */ if (istate->version == 3 || istate->version == 2) |