mirror of
https://github.com/git/git.git
synced 2024-11-18 02:53:55 +01:00
4431fcc4b1
This drops "mustexist" parameter lock_ref_sha1() and lock_any_ref_forupdate() functions take. Signed-off-by: Junio C Hamano <junkio@cox.net>
113 lines
2.5 KiB
C
113 lines
2.5 KiB
C
#include "cache.h"
|
|
#include "refs.h"
|
|
|
|
static const char *result_path, *lock_path;
|
|
static const char builtin_pack_refs_usage[] =
|
|
"git-pack-refs [--prune]";
|
|
|
|
struct ref_to_prune {
|
|
struct ref_to_prune *next;
|
|
unsigned char sha1[20];
|
|
char name[FLEX_ARRAY];
|
|
};
|
|
|
|
struct pack_refs_cb_data {
|
|
int prune;
|
|
struct ref_to_prune *ref_to_prune;
|
|
FILE *refs_file;
|
|
};
|
|
|
|
static void remove_lock_file(void)
|
|
{
|
|
if (lock_path)
|
|
unlink(lock_path);
|
|
}
|
|
|
|
static int do_not_prune(int flags)
|
|
{
|
|
/* If it is already packed or if it is a symref,
|
|
* do not prune it.
|
|
*/
|
|
return (flags & (REF_ISSYMREF|REF_ISPACKED));
|
|
}
|
|
|
|
static int handle_one_ref(const char *path, const unsigned char *sha1,
|
|
int flags, void *cb_data)
|
|
{
|
|
struct pack_refs_cb_data *cb = cb_data;
|
|
|
|
/* Do not pack the symbolic refs */
|
|
if (!(flags & REF_ISSYMREF))
|
|
fprintf(cb->refs_file, "%s %s\n", sha1_to_hex(sha1), path);
|
|
if (cb->prune && !do_not_prune(flags)) {
|
|
int namelen = strlen(path) + 1;
|
|
struct ref_to_prune *n = xcalloc(1, sizeof(*n) + namelen);
|
|
hashcpy(n->sha1, sha1);
|
|
strcpy(n->name, path);
|
|
n->next = cb->ref_to_prune;
|
|
cb->ref_to_prune = n;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* make sure nobody touched the ref, and unlink */
|
|
static void prune_ref(struct ref_to_prune *r)
|
|
{
|
|
struct ref_lock *lock = lock_ref_sha1(r->name + 5, r->sha1);
|
|
|
|
if (lock) {
|
|
unlink(git_path("%s", r->name));
|
|
unlock_ref(lock);
|
|
}
|
|
}
|
|
|
|
static void prune_refs(struct ref_to_prune *r)
|
|
{
|
|
while (r) {
|
|
prune_ref(r);
|
|
r = r->next;
|
|
}
|
|
}
|
|
|
|
int cmd_pack_refs(int argc, const char **argv, const char *prefix)
|
|
{
|
|
int fd, i;
|
|
struct pack_refs_cb_data cbdata;
|
|
|
|
memset(&cbdata, 0, sizeof(cbdata));
|
|
|
|
for (i = 1; i < argc; i++) {
|
|
const char *arg = argv[i];
|
|
if (!strcmp(arg, "--prune")) {
|
|
cbdata.prune = 1;
|
|
continue;
|
|
}
|
|
/* perhaps other parameters later... */
|
|
break;
|
|
}
|
|
if (i != argc)
|
|
usage(builtin_pack_refs_usage);
|
|
|
|
result_path = xstrdup(git_path("packed-refs"));
|
|
lock_path = xstrdup(mkpath("%s.lock", result_path));
|
|
|
|
fd = open(lock_path, O_CREAT | O_EXCL | O_WRONLY, 0666);
|
|
if (fd < 0)
|
|
die("unable to create new ref-pack file (%s)", strerror(errno));
|
|
atexit(remove_lock_file);
|
|
|
|
cbdata.refs_file = fdopen(fd, "w");
|
|
if (!cbdata.refs_file)
|
|
die("unable to create ref-pack file structure (%s)",
|
|
strerror(errno));
|
|
for_each_ref(handle_one_ref, &cbdata);
|
|
fsync(fd);
|
|
fclose(cbdata.refs_file);
|
|
if (rename(lock_path, result_path) < 0)
|
|
die("unable to overwrite old ref-pack file (%s)", strerror(errno));
|
|
lock_path = NULL;
|
|
if (cbdata.prune)
|
|
prune_refs(cbdata.ref_to_prune);
|
|
return 0;
|
|
}
|