DO NOT MERGE: Add a checker for signature boundary in verifier am: f616da1726 am: 5346da0220 -s ours am: a41cc29447 -s ours am: 051dfa7ec3 -s ours am: 94c8b5e5a6 am: 2b1bcab427 -s ours am: 37a5941440 am: ddca75fb0a am: b21b92b386 am: 8a51334062 -s ours am: 67b69c05c6 am: 8f9e3c9bd9 am: 8953f919e4
am: d0bfa33c66
Change-Id: I73459eeb26653773edcf10209531f397e40d2c03
diff --git a/updater/install.cpp b/updater/install.cpp
index 005f9f9..74feb56 100644
--- a/updater/install.cpp
+++ b/updater/install.cpp
@@ -35,8 +35,10 @@
#include <inttypes.h>
#include <memory>
+#include <string>
#include <vector>
+#include <android-base/file.h>
#include <android-base/parseint.h>
#include <android-base/strings.h>
#include <android-base/stringprintf.h>
@@ -966,7 +968,6 @@
return StringValue(strdup(value));
}
-
// file_getprop(file, key)
//
// interprets 'file' as a getprop-style file (key=value pairs, one
@@ -1428,6 +1429,31 @@
return v;
}
+// write_value(value, filename)
+// Writes 'value' to 'filename'.
+// Example: write_value("960000", "/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq")
+Value* WriteValueFn(const char* name, State* state, int argc, Expr* argv[]) {
+ if (argc != 2) {
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %d", name, argc);
+ }
+
+ char* value;
+ char* filename;
+ if (ReadArgs(state, argv, 2, &value, &filename) < 0) {
+ return ErrorAbort(state, kArgsParsingFailure, "%s(): Failed to parse the argument(s)",
+ name);
+ }
+
+ bool ret = android::base::WriteStringToFile(value, filename);
+ if (!ret) {
+ printf("%s: Failed to write to \"%s\": %s\n", name, filename, strerror(errno));
+ }
+
+ free(value);
+ free(filename);
+ return StringValue(strdup(ret ? "t" : ""));
+}
+
// Immediately reboot the device. Recovery is not finished normally,
// so if you reboot into recovery it will re-start applying the
// current package (because nothing has cleared the copy of the
@@ -1627,6 +1653,7 @@
RegisterFunction("read_file", ReadFileFn);
RegisterFunction("sha1_check", Sha1CheckFn);
RegisterFunction("rename", RenameFn);
+ RegisterFunction("write_value", WriteValueFn);
RegisterFunction("wipe_cache", WipeCacheFn);