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add GIT_SHALLOW_FILE to propagate --shallow-file to subprocesses 

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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1
cache.h
View File

@ -354,6 +354,7 @@ static inline enum object_type object_type(unsigned int mode)
#define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY"
#define INDEX_ENVIRONMENT "GIT_INDEX_FILE"
#define GRAFT_ENVIRONMENT "GIT_GRAFT_FILE"
#define GIT_SHALLOW_FILE_ENVIRONMENT "GIT_SHALLOW_FILE"
#define TEMPLATE_DIR_ENVIRONMENT "GIT_TEMPLATE_DIR"
#define CONFIG_ENVIRONMENT "GIT_CONFIG"
#define CONFIG_DATA_ENVIRONMENT "GIT_CONFIG_PARAMETERS"

2
commit.h
View File

@ -202,7 +202,7 @@ extern int is_repository_shallow(void);
extern struct commit_list *get_shallow_commits(struct object_array *heads,
int depth, int shallow_flag, int not_shallow_flag);
extern void check_shallow_file_for_update(void);
extern void set_alternate_shallow_file(const char *path);
extern void set_alternate_shallow_file(const char *path, int override);
extern int write_shallow_commits(struct strbuf *out, int use_pack_protocol,
const struct sha1_array *extra);
extern void setup_alternate_shallow(struct lock_file *shallow_lock,

6
environment.c
View File

@ -10,6 +10,7 @@
#include "cache.h"
#include "refs.h"
#include "fmt-merge-msg.h"
#include "commit.h"
int trust_executable_bit = 1;
int trust_ctime = 1;
@ -97,6 +98,7 @@ const char * const local_repo_env[] = {
INDEX_ENVIRONMENT,
NO_REPLACE_OBJECTS_ENVIRONMENT,
GIT_PREFIX_ENVIRONMENT,
GIT_SHALLOW_FILE_ENVIRONMENT,
NULL
};
@ -124,6 +126,7 @@ static char *expand_namespace(const char *raw_namespace)
static void setup_git_env(void)
{
const char *gitfile;
const char *shallow_file;
git_dir = getenv(GIT_DIR_ENVIRONMENT);
if (!git_dir)
@ -147,6 +150,9 @@ static void setup_git_env(void)
read_replace_refs = 0;
namespace = expand_namespace(getenv(GIT_NAMESPACE_ENVIRONMENT));
namespace_len = strlen(namespace);
shallow_file = getenv(GIT_SHALLOW_FILE_ENVIRONMENT);
if (shallow_file)
set_alternate_shallow_file(shallow_file, 0);
}
int is_bare_repository(void)

2
git.c
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@ -162,7 +162,7 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
} else if (!strcmp(cmd, "--shallow-file")) {
(*argv)++;
(*argc)--;
set_alternate_shallow_file((*argv)[0]);
set_alternate_shallow_file((*argv)[0], 1);
if (envchanged)
*envchanged = 1;
} else if (!strcmp(cmd, "-C")) {

4
shallow.c
View File

@ -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;
}