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add GIT_SHALLOW_FILE to propagate --shallow-file to subprocesses

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This may be needed when a hook is run after a new shallow pack is
received, but .git/shallow is not settled yet. A temporary shallow
file to plug all loose ends should be used instead. GIT_SHALLOW_FILE
is overriden by --shallow-file.

--shallow-file does not work in this case because the hook may spawn
many git subprocesses and the launch commands do not have
--shallow-file as it's a recent addition.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy
2013-12-05 20:02:45 +07:00
committed by Junio C Hamano
parent 5dbd767601
commit 069c053222
5 changed files with 12 additions and 3 deletions
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4
shallow.c
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@@ -13,10 +13,12 @@ static int is_shallow = -1;
static struct stat shallow_stat;
static char *alternate_shallow_file;
void set_alternate_shallow_file(const char *path)
void set_alternate_shallow_file(const char *path, int override)
{
if (is_shallow != -1)
die("BUG: is_repository_shallow must not be called before set_alternate_shallow_file");
if (alternate_shallow_file && !override)
return;
free(alternate_shallow_file);
alternate_shallow_file = path ? xstrdup(path) : NULL;
}