diff options
Diffstat (limited to 'src/app_cache.c')
| -rw-r--r-- | src/app_cache.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/src/app_cache.c b/src/app_cache.c new file mode 100644 index 0000000..7ea5356 --- /dev/null +++ b/src/app_cache.c @@ -0,0 +1,193 @@ +/* app_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 cache_ctx { + unsigned short solver_flags; +}; + +static int option_parse_applet(void *ctx, struct apk_db_options *dbopts, int optch, const char *optarg) +{ + struct cache_ctx *cctx = (struct cache_ctx *) ctx; + + switch (optch) { + case 'u': + cctx->solver_flags |= APK_SOLVERF_UPGRADE; + break; + case 'l': + cctx->solver_flags |= APK_SOLVERF_LATEST; + break; + default: + return -ENOTSUP; + } + return 0; +} + +static const struct apk_option options_applet[] = { + { 'u', "upgrade" }, + { 'l', "latest" }, +}; + +static const struct apk_option_group optgroup_applet = { + .name = "Cache", + .options = options_applet, + .num_options = ARRAY_SIZE(options_applet), + .parse = option_parse_applet, +}; + +struct progress { + size_t done, total; +}; + +static void progress_cb(void *ctx, size_t bytes_done) +{ + struct progress *prog = (struct progress *) ctx; + apk_print_progress(prog->done + bytes_done, prog->total); +} + +static int cache_download(struct cache_ctx *cctx, 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, cctx->solver_flags, 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; + + r = apk_cache_download(db, repo, pkg, APK_SIGN_VERIFY_IDENTITY, 0, + progress_cb, &prog); + if (r && r != -EALREADY) { + 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 (strcmp(name, "installed") == 0) return; + + if (pkg) { + if ((apk_flags & APK_PURGE) && pkg->ipkg == NULL) goto delete; + if (pkg->repos & db->local_repos & ~BIT(APK_REPOSITORY_CACHED)) goto delete; + if (pkg->ipkg == NULL && !(pkg->repos & ~BIT(APK_REPOSITORY_CACHED))) goto delete; + 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; + } + +delete: + 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, struct apk_string_array *args) +{ + struct cache_ctx *cctx = (struct cache_ctx *) ctx; + char *arg; + int r = 0, actions = 0; + + if (args->num != 1) + return -EINVAL; + + arg = args->item[0]; + if (strcmp(arg, "sync") == 0) + actions = CACHE_CLEAN | CACHE_DOWNLOAD; + else if (strcmp(arg, "clean") == 0) + actions = CACHE_CLEAN; + else if (strcmp(arg, "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(cctx, db); +err: + return r; +} + +static struct apk_applet apk_cache = { + .name = "cache", + .arguments = "sync | clean | download", + .open_flags = APK_OPENF_READ|APK_OPENF_NO_SCRIPTS|APK_OPENF_CACHE_WRITE, + .command_groups = APK_COMMAND_GROUP_SYSTEM, + .context_size = sizeof(struct cache_ctx), + .optgroups = { &optgroup_global, &optgroup_applet }, + .main = cache_main, +}; + +APK_DEFINE_APPLET(apk_cache); |