Sandbox soong_build by changing to root directory
Store the current working directory and then change to the root
directory so that all file accesses must go through helpers in
the android package that properly track dependencies.
Fixes: 146437378
Test: m checkbuild
Change-Id: I12a0f907753fefd1997ab8b4ea2ac331234093cf
diff --git a/ui/build/soong.go b/ui/build/soong.go
index 3388417..afbc073 100644
--- a/ui/build/soong.go
+++ b/ui/build/soong.go
@@ -119,6 +119,7 @@
"-j", strconv.Itoa(config.Parallel()),
"--frontend_file", fifo,
"-f", filepath.Join(config.SoongOutDir(), file))
+ cmd.Environment.Set("SOONG_SANDBOX_SOONG_BUILD", "true")
cmd.Sandbox = soongSandbox
cmd.RunAndStreamOrFatal()
}