From c1db6b2238c728aee982fd65ef7037d6489c3084 Mon Sep 17 00:00:00 2001
From: Timo Teräs <timo.teras@iki.fi>
Date: Tue, 31 Jan 2023 14:44:26 +0200
Subject: cache: fix 'clean' to prune static cache always

Fix cache applet to prune the static cache which is used for index
files if explicit caching is not enabled.

fixes #10754
---
 src/apk_database.h |  4 ++--
 src/app_cache.c    | 30 ++++++++++++++++--------------
 src/database.c     | 17 ++++++++++++-----
 3 files changed, 30 insertions(+), 21 deletions(-)

diff --git a/src/apk_database.h b/src/apk_database.h
index aa0145b..a0a62ca 100644
--- a/src/apk_database.h
+++ b/src/apk_database.h
@@ -259,10 +259,10 @@ int apk_cache_download(struct apk_database *db, struct apk_repository *repo,
 		       struct apk_package *pkg, int verify, int autoupdate,
 		       apk_progress_cb cb, void *cb_ctx);
 
-typedef void (*apk_cache_item_cb)(struct apk_database *db,
+typedef void (*apk_cache_item_cb)(struct apk_database *db, int static_cache,
 				  int dirfd, const char *name,
 				  struct apk_package *pkg);
-int apk_db_cache_foreach_item(struct apk_database *db, apk_cache_item_cb cb);
+int apk_db_cache_foreach_item(struct apk_database *db, apk_cache_item_cb cb, int static_cache);
 
 int apk_db_install_pkg(struct apk_database *db,
 		       struct apk_package *oldpkg,
diff --git a/src/app_cache.c b/src/app_cache.c
index 09d9adf..7239faa 100644
--- a/src/app_cache.c
+++ b/src/app_cache.c
@@ -142,19 +142,20 @@ static int cache_download(struct cache_ctx *cctx, struct apk_database *db, struc
 	return ret;
 }
 
-static void cache_clean_item(struct apk_database *db, int dirfd, const char *name, struct apk_package *pkg)
+static void cache_clean_item(struct apk_database *db, int static_cache, 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;
+	if (!static_cache) {
+		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);
@@ -175,7 +176,11 @@ delete:
 
 static int cache_clean(struct apk_database *db)
 {
-	return apk_db_cache_foreach_item(db, cache_clean_item);
+	if (apk_db_cache_active(db)) {
+		int r = apk_db_cache_foreach_item(db, cache_clean_item, 0);
+		if (r) return r;
+	}
+	return apk_db_cache_foreach_item(db, cache_clean_item, 1);
 }
 
 static int cache_main(void *ctx, struct apk_database *db, struct apk_string_array *args)
@@ -197,11 +202,8 @@ static int cache_main(void *ctx, struct apk_database *db, struct apk_string_arra
 	else
 		return -EINVAL;
 
-	if (!apk_db_cache_active(db)) {
-		apk_error("Package cache is not enabled.");
-		r = 2;
-		goto err;
-	}
+	if (!apk_db_cache_active(db))
+		actions &= CACHE_CLEAN;
 
 	if ((actions & CACHE_DOWNLOAD) && (cctx->solver_flags || cctx->add_dependencies)) {
 		if (db->repositories.stale || db->repositories.unavailable) {
diff --git a/src/database.c b/src/database.c
index 7118c64..04eac61 100644
--- a/src/database.c
+++ b/src/database.c
@@ -1391,7 +1391,7 @@ static char *find_mountpoint(int atfd, const char *rel_path)
 	return ret;
 }
 
-static void mark_in_cache(struct apk_database *db, int dirfd, const char *name, struct apk_package *pkg)
+static void mark_in_cache(struct apk_database *db, int static_cache, int dirfd, const char *name, struct apk_package *pkg)
 {
 	if (pkg == NULL)
 		return;
@@ -1722,7 +1722,7 @@ int apk_db_open(struct apk_database *db, struct apk_db_options *dbopts)
 	}
 
 	if (apk_db_cache_active(db) && (dbopts->open_flags & (APK_OPENF_NO_REPOS|APK_OPENF_NO_INSTALLED)) == 0)
-		apk_db_cache_foreach_item(db, mark_in_cache);
+		apk_db_cache_foreach_item(db, mark_in_cache, 0);
 
 	db->open_complete = 1;
 
@@ -2038,6 +2038,7 @@ int apk_db_cache_active(struct apk_database *db)
 struct foreach_cache_item_ctx {
 	struct apk_database *db;
 	apk_cache_item_cb cb;
+	int static_cache;
 };
 
 static int foreach_cache_file(void *pctx, int dirfd, const char *name)
@@ -2067,15 +2068,21 @@ static int foreach_cache_file(void *pctx, int dirfd, const char *name)
 		}
 	}
 no_pkg:
-	ctx->cb(db, dirfd, name, pkg);
+	ctx->cb(db, ctx->static_cache, dirfd, name, pkg);
 
 	return 0;
 }
 
-int apk_db_cache_foreach_item(struct apk_database *db, apk_cache_item_cb cb)
+int apk_db_cache_foreach_item(struct apk_database *db, apk_cache_item_cb cb, int static_cache)
 {
-	struct foreach_cache_item_ctx ctx = { db, cb };
+	struct foreach_cache_item_ctx ctx = { db, cb, static_cache };
 
+	if (static_cache) {
+		return apk_dir_foreach_file(
+			openat(db->root_fd, apk_static_cache_dir, O_RDONLY | O_CLOEXEC),
+			foreach_cache_file, &ctx);
+	}
+	if (db->cache_fd < 0) return db->cache_fd;
 	return apk_dir_foreach_file(dup(db->cache_fd), foreach_cache_file, &ctx);
 }
 
-- 
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