From 8b17ac6bd6b5114babac619cad3ff03fbf10a953 Mon Sep 17 00:00:00 2001
From: Alex Light <allight@google.com>
Date: Thu, 28 Aug 2014 16:17:04 -0700
Subject: [PATCH] Remove obsolete prunedexcache

Bug: 16875245

(cherry picked from commit 5f727f86942a188354c028356f1167794fdc8655)

Change-Id: I06e14c405aa4af295795982c1d236be3cb00e893
---
 cmds/installd/commands.c | 47 ----------------------------------------
 cmds/installd/installd.c |  7 ------
 cmds/installd/installd.h |  1 -
 3 files changed, 55 deletions(-)

diff --git a/cmds/installd/commands.c b/cmds/installd/commands.c
index 717ea0978..3e2d9535c 100644
--- a/cmds/installd/commands.c
+++ b/cmds/installd/commands.c
@@ -1537,50 +1537,3 @@ int restorecon_data(const char* pkgName, const char* seinfo, uid_t uid)
     return ret;
 }
 
-static int prune_dex_exclusion_predicate(const char *file_name, const int is_dir)
-{
-    // Exclude all directories. The top level command will be
-    // given a list of ISA specific directories that are assumed
-    // to be flat.
-    if (is_dir) {
-      return 1;
-    }
-
-
-    // Don't exclude regular files that start with the list
-    // of prefixes.
-    static const char data_app_prefix[] = "data@app@";
-    static const char data_priv_app_prefix[] = "data@priv-app@";
-    if (!strncmp(file_name, data_app_prefix, sizeof(data_app_prefix) - 1) ||
-        !strncmp(file_name, data_priv_app_prefix, sizeof(data_priv_app_prefix) - 1)) {
-      return 0;
-    }
-
-    // Exclude all regular files that don't start with the prefix "data@app@" or
-    // "data@priv-app@".
-    return 1;
-}
-
-int prune_dex_cache(const char* subdir) {
-    // "." is handled as a special case, and refers to
-    // DALVIK_CACHE_PREFIX (usually /data/dalvik-cache).
-    const bool is_dalvik_cache_root = !strcmp(subdir, ".");
-
-    // Don't allow the path to contain "." or ".." except for the
-    // special case above. This is much stricter than we need to be,
-    // but there's no good reason to support them.
-    if (strchr(subdir, '.' ) != NULL && !is_dalvik_cache_root) {
-        return -1;
-    }
-
-    if (!is_dalvik_cache_root) {
-        char full_path[PKG_PATH_MAX];
-        snprintf(full_path, sizeof(full_path), "%s%s", DALVIK_CACHE_PREFIX, subdir);
-        return delete_dir_contents(full_path, 0, &prune_dex_exclusion_predicate);
-    }
-
-
-    // When subdir == ".", clean the contents of the top level
-    // dalvik-cache directory.
-    return delete_dir_contents(DALVIK_CACHE_PREFIX, 0, &prune_dex_exclusion_predicate);
-}
diff --git a/cmds/installd/installd.c b/cmds/installd/installd.c
index c06365d21..c7fdf7af9 100644
--- a/cmds/installd/installd.c
+++ b/cmds/installd/installd.c
@@ -145,12 +145,6 @@ static int do_restorecon_data(char **arg, char reply[REPLY_MAX] __attribute__((u
                              /* pkgName, seinfo, uid*/
 }
 
-static int do_prune_dex_cache(char **arg __attribute__((unused)),
-                              char reply[REPLY_MAX] __attribute__((unused)))
-{
-    return prune_dex_cache(arg[0] /* subdirectory name */);
-}
-
 static int do_patchoat(char **arg, char reply[REPLY_MAX]) {
     /* apk_path, uid, is_public, pkgname, instruction_set, vm_safe_mode, should_relocate */
     return dexopt(arg[0], atoi(arg[1]), atoi(arg[2]), arg[3], arg[4], 0, 1);
@@ -183,7 +177,6 @@ struct cmdinfo cmds[] = {
     { "rmuser",               1, do_rm_user },
     { "idmap",                3, do_idmap },
     { "restorecondata",       3, do_restorecon_data },
-    { "prunedexcache",        1, do_prune_dex_cache },
     { "patchoat",             5, do_patchoat },
 };
 
diff --git a/cmds/installd/installd.h b/cmds/installd/installd.h
index c1d014802..99f037c34 100644
--- a/cmds/installd/installd.h
+++ b/cmds/installd/installd.h
@@ -222,4 +222,3 @@ int movefiles();
 int linklib(const char* target, const char* source, int userId);
 int idmap(const char *target_path, const char *overlay_path, uid_t uid);
 int restorecon_data();
-int prune_dex_cache(const char* subdir);