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/* cache.c - Alpine Package Keeper (APK)
*
* Copyright (C) 2005-2008 Natanael Copa <n@tanael.org>
* Copyright (C) 2008-2011 Timo Teräs <timo.teras@iki.fi>
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation. See http://www.gnu.org/ for details.
*/
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <dirent.h>
#include <unistd.h>
#include <limits.h>
#include "apk_defines.h"
#include "apk_applet.h"
#include "apk_database.h"
#include "apk_package.h"
#include "apk_print.h"
#include "apk_solver.h"
#define CACHE_CLEAN BIT(0)
#define CACHE_DOWNLOAD BIT(1)
struct progress {
size_t done, total;
int flags;
};
static void progress_cb(void *ctx, size_t bytes_done)
{
struct progress *prog = (struct progress *) ctx;
apk_print_progress(muldiv(100, prog->done + bytes_done, prog->total) | prog->flags);
prog->flags = 0;
}
static int cache_download(struct apk_database *db)
{
struct apk_changeset changeset = {};
struct apk_change *change;
struct apk_package *pkg;
struct apk_repository *repo;
struct progress prog = { 0, 0 };
int r, ret = 0;
r = apk_solver_solve(db, 0, db->world, &changeset);
if (r < 0) {
apk_error("Unable to select packages. Run apk fix.");
return r;
}
foreach_array_item(change, changeset.changes) {
pkg = change->new_pkg;
if ((pkg != NULL) && !(pkg->repos & db->local_repos))
prog.total += pkg->size;
}
foreach_array_item(change, changeset.changes) {
pkg = change->new_pkg;
if ((pkg == NULL) || (pkg->repos & db->local_repos))
continue;
repo = apk_db_select_repo(db, pkg);
if (repo == NULL)
continue;
prog.flags = APK_PRINT_PROGRESS_FORCE;
r = apk_cache_download(db, repo, pkg, APK_SIGN_VERIFY_IDENTITY,
progress_cb, &prog);
if (r) {
apk_error(PKG_VER_FMT ": %s", PKG_VER_PRINTF(pkg), apk_error_str(r));
ret++;
}
prog.done += pkg->size;
}
return ret;
}
static void cache_clean_item(struct apk_database *db, int dirfd, const char *name, struct apk_package *pkg)
{
char tmp[PATH_MAX];
apk_blob_t b;
int i;
if (pkg != NULL || strcmp(name, "installed") == 0)
return;
b = APK_BLOB_STR(name);
for (i = 0; i < db->num_repos; i++) {
/* Check if this is a valid index */
apk_repo_format_cache_index(APK_BLOB_BUF(tmp), &db->repos[i]);
if (apk_blob_compare(b, APK_BLOB_STR(tmp)) == 0)
return;
}
if (apk_verbosity >= 2)
apk_message("deleting %s", name);
if (!(apk_flags & APK_SIMULATE)) {
if (unlinkat(dirfd, name, 0) < 0 && errno == EISDIR)
unlinkat(dirfd, name, AT_REMOVEDIR);
}
}
static int cache_clean(struct apk_database *db)
{
return apk_db_cache_foreach_item(db, cache_clean_item);
}
static int cache_main(void *ctx, struct apk_database *db, int argc, char **argv)
{
int r = 0, actions = 0;
if (argc != 1)
return -EINVAL;
if (strcmp(argv[0], "sync") == 0)
actions = CACHE_CLEAN | CACHE_DOWNLOAD;
else if (strcmp(argv[0], "clean") == 0)
actions = CACHE_CLEAN;
else if (strcmp(argv[0], "download") == 0)
actions = CACHE_DOWNLOAD;
else
return -EINVAL;
if (!apk_db_cache_active(db)) {
apk_error("Package cache is not enabled.\n");
r = 2;
goto err;
}
if (r == 0 && (actions & CACHE_CLEAN))
r = cache_clean(db);
if (r == 0 && (actions & CACHE_DOWNLOAD))
r = cache_download(db);
err:
return r;
}
static struct apk_applet apk_cache = {
.name = "cache",
.help = "Download missing PACKAGEs to cache directory, or delete "
"files no longer required. Package caching is enabled by "
"making /etc/apk/cache a symlink to the directory (on boot "
"media) that will be used as package cache.",
.arguments = "sync | clean | download",
.open_flags = APK_OPENF_READ|APK_OPENF_NO_SCRIPTS|APK_OPENF_NO_INSTALLED|APK_OPENF_CACHE_WRITE,
.main = cache_main,
};
APK_DEFINE_APPLET(apk_cache);
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