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git/builtin/prune.c

201 lines
4.9 KiB

#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 "prune-packed.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 (S_ISDIR(st.st_mode)) {
if (show_only || verbose)
printf("Removing stale temporary directory %s\n", fullpath);
if (!show_only) {
struct strbuf remove_dir_buf = STRBUF_INIT;
strbuf_addstr(&remove_dir_buf, fullpath);
remove_dir_recursively(&remove_dir_buf, 0);
strbuf_release(&remove_dir_buf);
}
} else {
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;
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);
}
release_revisions(&revs);
return 0;
}