syscall: use stringslite.Has{Prefix,Suffix}

Change-Id: I393191b95eeb8e17345ce28cfa1fb54a3ef13951
Reviewed-on: https://go-review.googlesource.com/c/go/+/582237
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Damien Neil <dneil@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>

1 files changed, 4 insertions, 11 deletions

diff --git a/src/syscall/fs_wasip1.go b/src/syscall/fs_wasip1.go
index 4d3d7d72c6..f19e8f3b3c 100644
--- a/src/syscall/fs_wasip1.go
+++ b/src/syscall/fs_wasip1.go
@@ -7,6 +7,7 @@
 package syscall
 
 import (
+	"internal/stringslite"
 	"runtime"
 	"unsafe"
 )
@@ -468,19 +469,11 @@ func joinPath(dir, file string) string {
 }
 
 func isAbs(path string) bool {
-	return hasPrefix(path, "/")
+	return stringslite.HasPrefix(path, "/")
 }
 
 func isDir(path string) bool {
-	return hasSuffix(path, "/")
-}
-
-func hasPrefix(s, p string) bool {
-	return len(s) >= len(p) && s[:len(p)] == p
-}
-
-func hasSuffix(s, x string) bool {
-	return len(s) >= len(x) && s[len(s)-len(x):] == x
+	return stringslite.HasSuffix(path, "/")
 }
 
 // preparePath returns the preopen file descriptor of the directory to perform
@@ -500,7 +493,7 @@ func preparePath(path string) (int32, unsafe.Pointer, size) {
 	path = joinPath(dir, path)
 
 	for _, p := range preopens {
-		if len(p.name) > len(dirName) && hasPrefix(path, p.name) {
+		if len(p.name) > len(dirName) && stringslite.HasPrefix(path, p.name) {
 			dirFd, dirName = p.fd, p.name
 		}
 	}