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make the pack index version configurable

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It is a good idea to use pack index version 2 all the time since it has
proper protection against propagation of certain pack corruptions when
repacking which is not possible with index version 1, as demonstrated
in test t5302.

Hence this config option.

The default is still pack index version 1.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nicolas Pitre 2007-11-01 23:26:04 -04:00 committed by Junio C Hamano
parent 3e4bb087a1
commit 4d00bda2aa
3 changed files with 28 additions and 0 deletions
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9
Documentation/config.txt
View File

@ -661,6 +661,15 @@ pack.threads::
machines. The required amount of memory for the delta search window
is however multiplied by the number of threads.
pack.indexVersion::
Specify the default pack index version. Valid values are 1 for
legacy pack index used by Git versions prior to 1.5.2, and 2 for
the new pack index with capabilities for packs larger than 4 GB
as well as proper protection against the repacking of corrupted
packs. Version 2 is selected and this config option ignored
whenever the corresponding pack is larger than 2 GB. Otherwise
the default is 1.
pull.octopus::
The default merge strategy to use when pulling multiple branches
at once.

6
builtin-pack-objects.c
View File

@ -1773,6 +1773,12 @@ static int git_pack_config(const char *k, const char *v)
#endif
return 0;
}
if (!strcmp(k, "pack.indexversion")) {
pack_idx_default_version = git_config_int(k, v);
if (pack_idx_default_version > 2)
die("bad pack.indexversion=%d", pack_idx_default_version);
return 0;
}
return git_default_config(k, v);
}

13
index-pack.c
View File

@ -683,6 +683,17 @@ static void final(const char *final_pack_name, const char *curr_pack_name,
}
}
static int git_index_pack_config(const char *k, const char *v)
{
if (!strcmp(k, "pack.indexversion")) {
pack_idx_default_version = git_config_int(k, v);
if (pack_idx_default_version > 2)
die("bad pack.indexversion=%d", pack_idx_default_version);
return 0;
}
return git_default_config(k, v);
}
int main(int argc, char **argv)
{
int i, fix_thin_pack = 0;
@ -693,6 +704,8 @@ int main(int argc, char **argv)
struct pack_idx_entry **idx_objects;
unsigned char sha1[20];
git_config(git_index_pack_config);
for (i = 1; i < argc; i++) {
const char *arg = argv[i];