unix: expose mmap calls on z/OS

The calls `Mmap` and `Munmap` were removed for z/OS. Syscall removed occurred in: 508397 This change exposes them in a z/OS specific file (to remove the accidental deletion of them in future refactors of the APIs for `unix-like` OSes). Change-Id: Ice0cabfb4547cab2ffa7130b7c26d9cc38233afe GitHub-Last-Rev: e7b4680 GitHub-Pull-Request: #186 Reviewed-on: https://go-review.googlesource.com/c/sys/+/569359 LUCI-TryBot-Result: Go LUCI <[email protected]> Reviewed-by: Ian Lance Taylor <[email protected]> Auto-Submit: Ian Lance Taylor <[email protected]> Reviewed-by: Michael Knyszek <[email protected]>
golang · Mar 8, 2024 · 4be02d3 · 4be02d3
1 parent 360f961
commit 4be02d3
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diff --git a/unix/mmap_nomremap.go b/unix/mmap_nomremap.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 || openbsd || solaris
+//go:build aix || darwin || dragonfly || freebsd || openbsd || solaris || zos
 
 package unix
 

diff --git a/unix/syscall_zos_s390x.go b/unix/syscall_zos_s390x.go
@@ -1520,6 +1520,14 @@ func (m *mmapper) Munmap(data []byte) (err error) {
 	return nil
 }
 
+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 Read(fd int, p []byte) (n int, err error) {
 	n, err = read(fd, p)
 	if raceenabled {