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git/builtin/prune.c
Taylor Blau 120ad2b0f1 shallow: extract a header file for shallow-related functions
There are many functions in commit.h that are more related to shallow
repositories than they are to any sort of generic commit machinery.
Likely this began when there were only a few shallow-related functions,
and commit.h seemed a reasonable enough place to put them.

But, now there are a good number of shallow-related functions, and
placing them all in 'commit.h' doesn't make sense.

This patch extracts a 'shallow.h', which takes all of the declarations
from 'commit.h' for functions which already exist in 'shallow.c'. We
will bring the remaining shallow-related functions defined in 'commit.c'
in a subsequent patch.

For now, move only the ones that already are implemented in 'shallow.c',
and update the necessary includes.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-04-30 14:19:13 -07:00

189 lines
4.5 KiB
C

#include "cache.h"
#include "commit.h"
#include "diff.h"
#include "revision.h"
#include "builtin.h"
#include "reachable.h"
#include "parse-options.h"
#include "progress.h"
#include "object-store.h"
#include "shallow.h"
static const char * const prune_usage[] = {
N_("git prune [-n] [-v] [--progress] [--expire <time>] [--] [<head>...]"),
NULL
};
static int show_only;
static int verbose;
static timestamp_t expire;
static int show_progress = -1;
static int prune_tmp_file(const char *fullpath)
{
struct stat st;
if (lstat(fullpath, &st))
return error("Could not stat '%s'", fullpath);
if (st.st_mtime > expire)
return 0;
if (show_only || verbose)
printf("Removing stale temporary file %s\n", fullpath);
if (!show_only)
unlink_or_warn(fullpath);
return 0;
}
static void perform_reachability_traversal(struct rev_info *revs)
{
static int initialized;
struct progress *progress = NULL;
if (initialized)
return;
if (show_progress)
progress = start_delayed_progress(_("Checking connectivity"), 0);
mark_reachable_objects(revs, 1, expire, progress);
stop_progress(&progress);
initialized = 1;
}
static int is_object_reachable(const struct object_id *oid,
struct rev_info *revs)
{
struct object *obj;
perform_reachability_traversal(revs);
obj = lookup_object(the_repository, oid);
return obj && (obj->flags & SEEN);
}
static int prune_object(const struct object_id *oid, const char *fullpath,
void *data)
{
struct rev_info *revs = data;
struct stat st;
if (is_object_reachable(oid, revs))
return 0;
if (lstat(fullpath, &st)) {
/* report errors, but do not stop pruning */
error("Could not stat '%s'", fullpath);
return 0;
}
if (st.st_mtime > expire)
return 0;
if (show_only || verbose) {
enum object_type type = oid_object_info(the_repository, oid,
NULL);
printf("%s %s\n", oid_to_hex(oid),
(type > 0) ? type_name(type) : "unknown");
}
if (!show_only)
unlink_or_warn(fullpath);
return 0;
}
static int prune_cruft(const char *basename, const char *path, void *data)
{
if (starts_with(basename, "tmp_obj_"))
prune_tmp_file(path);
else
fprintf(stderr, "bad sha1 file: %s\n", path);
return 0;
}
static int prune_subdir(unsigned int nr, const char *path, void *data)
{
if (!show_only)
rmdir(path);
return 0;
}
/*
* Write errors (particularly out of space) can result in
* failed temporary packs (and more rarely indexes and other
* files beginning with "tmp_") accumulating in the object
* and the pack directories.
*/
static void remove_temporary_files(const char *path)
{
DIR *dir;
struct dirent *de;
dir = opendir(path);
if (!dir) {
fprintf(stderr, "Unable to open directory %s\n", path);
return;
}
while ((de = readdir(dir)) != NULL)
if (starts_with(de->d_name, "tmp_"))
prune_tmp_file(mkpath("%s/%s", path, de->d_name));
closedir(dir);
}
int cmd_prune(int argc, const char **argv, const char *prefix)
{
struct rev_info revs;
int exclude_promisor_objects = 0;
const struct option options[] = {
OPT__DRY_RUN(&show_only, N_("do not remove, show only")),
OPT__VERBOSE(&verbose, N_("report pruned objects")),
OPT_BOOL(0, "progress", &show_progress, N_("show progress")),
OPT_EXPIRY_DATE(0, "expire", &expire,
N_("expire objects older than <time>")),
OPT_BOOL(0, "exclude-promisor-objects", &exclude_promisor_objects,
N_("limit traversal to objects outside promisor packfiles")),
OPT_END()
};
char *s;
expire = TIME_MAX;
save_commit_buffer = 0;
read_replace_refs = 0;
ref_paranoia = 1;
repo_init_revisions(the_repository, &revs, prefix);
argc = parse_options(argc, argv, prefix, options, prune_usage, 0);
if (repository_format_precious_objects)
die(_("cannot prune in a precious-objects repo"));
while (argc--) {
struct object_id oid;
const char *name = *argv++;
if (!get_oid(name, &oid)) {
struct object *object = parse_object_or_die(&oid,
name);
add_pending_object(&revs, object, "");
}
else
die("unrecognized argument: %s", name);
}
if (show_progress == -1)
show_progress = isatty(2);
if (exclude_promisor_objects) {
fetch_if_missing = 0;
revs.exclude_promisor_objects = 1;
}
for_each_loose_file_in_objdir(get_object_directory(), prune_object,
prune_cruft, prune_subdir, &revs);
prune_packed_objects(show_only ? PRUNE_PACKED_DRY_RUN : 0);
remove_temporary_files(get_object_directory());
s = mkpathdup("%s/pack", get_object_directory());
remove_temporary_files(s);
free(s);
if (is_repository_shallow(the_repository)) {
perform_reachability_traversal(&revs);
prune_shallow(show_only ? PRUNE_SHOW_ONLY : 0);
}
return 0;
}