[view compilation] Add viewcompiler support to installd
This change adds methods to installd to call viewcompiler and generate
precompiled layouts when requested either by `pm compile --compile-layouts`,
package install, or package upgrade.
Bug: 111895153
Test: manual
Change-Id: Ic021d7a41c15642664f44542653170ad24055f22
diff --git a/cmds/installd/utils.cpp b/cmds/installd/utils.cpp
index 74ad184..bbf14cb 100644
--- a/cmds/installd/utils.cpp
+++ b/cmds/installd/utils.cpp
@@ -20,6 +20,7 @@
#include <fcntl.h>
#include <fts.h>
#include <stdlib.h>
+#include <sys/capability.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/xattr.h>
@@ -34,6 +35,7 @@
#include <log/log.h>
#include <private/android_filesystem_config.h>
+#include "dexopt_return_codes.h"
#include "globals.h" // extern variables.
#ifndef LOG_TAG
@@ -1063,5 +1065,26 @@
}
}
+void drop_capabilities(uid_t uid) {
+ if (setgid(uid) != 0) {
+ PLOG(ERROR) << "setgid(" << uid << ") failed in installd during dexopt";
+ exit(DexoptReturnCodes::kSetGid);
+ }
+ if (setuid(uid) != 0) {
+ PLOG(ERROR) << "setuid(" << uid << ") failed in installd during dexopt";
+ exit(DexoptReturnCodes::kSetUid);
+ }
+ // drop capabilities
+ struct __user_cap_header_struct capheader;
+ struct __user_cap_data_struct capdata[2];
+ memset(&capheader, 0, sizeof(capheader));
+ memset(&capdata, 0, sizeof(capdata));
+ capheader.version = _LINUX_CAPABILITY_VERSION_3;
+ if (capset(&capheader, &capdata[0]) < 0) {
+ PLOG(ERROR) << "capset failed";
+ exit(DexoptReturnCodes::kCapSet);
+ }
+}
+
} // namespace installd
} // namespace android