diff --git a/src/syscall/mmap_unix_test.go b/src/syscall/mmap_unix_test.go
index 3e9c08d67d..5e08b20679 100644
--- a/src/syscall/mmap_unix_test.go
+++ b/src/syscall/mmap_unix_test.go
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd
+//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
 
 package syscall_test
 
diff --git a/src/syscall/syscall_solaris.go b/src/syscall/syscall_solaris.go
index 0363597c9e..f6d7e46cd3 100644
--- a/src/syscall/syscall_solaris.go
+++ b/src/syscall/syscall_solaris.go
@@ -536,6 +536,20 @@ func writelen(fd int, buf *byte, nbuf int) (n int, err error) {
 	return
 }
 
+var mapper = &mmapper{
+	active: make(map[*byte][]byte),
+	mmap:   mmap,
+	munmap: munmap,
+}
+
+func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) {
+	return mapper.Mmap(fd, offset, length, prot, flags)
+}
+
+func Munmap(b []byte) (err error) {
+	return mapper.Munmap(b)
+}
+
 func Utimes(path string, tv []Timeval) error {
 	if len(tv) != 2 {
 		return EINVAL