merge prefer_openssl package into stupidgcm

Now that I have discovered golang.org/x/sys/cpu and that Go
versions below 1.6 are uncommon, there was not much useful
code left in prefer_openssl.

Merge the remains into stupidgcm.

1 files changed, 0 insertions, 31 deletions

diff --git a/internal/prefer_openssl/prefer.go b/internal/prefer_openssl/prefer.go
deleted file mode 100644
index 74c26b7..0000000
--- a/internal/prefer_openssl/prefer.go
+++ /dev/null
@@ -1,31 +0,0 @@
-// Package prefer_openssl tries to determine if we should prefer openssl
-// on the platform we are running on.
-package prefer_openssl
-
-import (
-	"io/ioutil"
-	"regexp"
-
-	"github.com/rfjakob/gocryptfs/internal/tlog"
-)
-
-// filePreferOpenSSL tells us if OpenSSL is faster than Go GCM on this machine.
-// Go GCM is faster when the CPU has AES instructions and Go is v1.6 or higher.
-//
-// See https://github.com/rfjakob/gocryptfs/issues/23#issuecomment-218286502
-// for benchmarks.
-//
-// filePreferOpenSSL takes an explicit filename so it can be tested with saved
-// cpuinfo files instead of /proc/cpuinfo.
-func filePreferOpenSSL(file string) bool {
-	ci, err := ioutil.ReadFile(file)
-	if err != nil {
-		return true
-	}
-	haveAes, err := regexp.Match(`(?m)^flags.*\baes\b`, ci)
-	if err != nil {
-		tlog.Warn.Println(err)
-		return true
-	}
-	return !haveAes
-}