[VOL-4291] Rw-core updates for gRPC migration
Change-Id: I8d5a554409115b29318089671ca4e1ab3fa98810
diff --git a/vendor/golang.org/x/sys/unix/fstatfs_zos.go b/vendor/golang.org/x/sys/unix/fstatfs_zos.go
new file mode 100644
index 0000000..e377cc9
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/fstatfs_zos.go
@@ -0,0 +1,164 @@
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build zos && s390x
+// +build zos,s390x
+
+package unix
+
+import (
+ "unsafe"
+)
+
+// This file simulates fstatfs on z/OS using fstatvfs and w_getmntent.
+
+func Fstatfs(fd int, stat *Statfs_t) (err error) {
+ var stat_v Statvfs_t
+ err = Fstatvfs(fd, &stat_v)
+ if err == nil {
+ // populate stat
+ stat.Type = 0
+ stat.Bsize = stat_v.Bsize
+ stat.Blocks = stat_v.Blocks
+ stat.Bfree = stat_v.Bfree
+ stat.Bavail = stat_v.Bavail
+ stat.Files = stat_v.Files
+ stat.Ffree = stat_v.Ffree
+ stat.Fsid = stat_v.Fsid
+ stat.Namelen = stat_v.Namemax
+ stat.Frsize = stat_v.Frsize
+ stat.Flags = stat_v.Flag
+ for passn := 0; passn < 5; passn++ {
+ switch passn {
+ case 0:
+ err = tryGetmntent64(stat)
+ break
+ case 1:
+ err = tryGetmntent128(stat)
+ break
+ case 2:
+ err = tryGetmntent256(stat)
+ break
+ case 3:
+ err = tryGetmntent512(stat)
+ break
+ case 4:
+ err = tryGetmntent1024(stat)
+ break
+ default:
+ break
+ }
+ //proceed to return if: err is nil (found), err is nonnil but not ERANGE (another error occurred)
+ if err == nil || err != nil && err != ERANGE {
+ break
+ }
+ }
+ }
+ return err
+}
+
+func tryGetmntent64(stat *Statfs_t) (err error) {
+ var mnt_ent_buffer struct {
+ header W_Mnth
+ filesys_info [64]W_Mntent
+ }
+ var buffer_size int = int(unsafe.Sizeof(mnt_ent_buffer))
+ fs_count, err := W_Getmntent((*byte)(unsafe.Pointer(&mnt_ent_buffer)), buffer_size)
+ if err != nil {
+ return err
+ }
+ err = ERANGE //return ERANGE if no match is found in this batch
+ for i := 0; i < fs_count; i++ {
+ if stat.Fsid == uint64(mnt_ent_buffer.filesys_info[i].Dev) {
+ stat.Type = uint32(mnt_ent_buffer.filesys_info[i].Fstname[0])
+ err = nil
+ break
+ }
+ }
+ return err
+}
+
+func tryGetmntent128(stat *Statfs_t) (err error) {
+ var mnt_ent_buffer struct {
+ header W_Mnth
+ filesys_info [128]W_Mntent
+ }
+ var buffer_size int = int(unsafe.Sizeof(mnt_ent_buffer))
+ fs_count, err := W_Getmntent((*byte)(unsafe.Pointer(&mnt_ent_buffer)), buffer_size)
+ if err != nil {
+ return err
+ }
+ err = ERANGE //return ERANGE if no match is found in this batch
+ for i := 0; i < fs_count; i++ {
+ if stat.Fsid == uint64(mnt_ent_buffer.filesys_info[i].Dev) {
+ stat.Type = uint32(mnt_ent_buffer.filesys_info[i].Fstname[0])
+ err = nil
+ break
+ }
+ }
+ return err
+}
+
+func tryGetmntent256(stat *Statfs_t) (err error) {
+ var mnt_ent_buffer struct {
+ header W_Mnth
+ filesys_info [256]W_Mntent
+ }
+ var buffer_size int = int(unsafe.Sizeof(mnt_ent_buffer))
+ fs_count, err := W_Getmntent((*byte)(unsafe.Pointer(&mnt_ent_buffer)), buffer_size)
+ if err != nil {
+ return err
+ }
+ err = ERANGE //return ERANGE if no match is found in this batch
+ for i := 0; i < fs_count; i++ {
+ if stat.Fsid == uint64(mnt_ent_buffer.filesys_info[i].Dev) {
+ stat.Type = uint32(mnt_ent_buffer.filesys_info[i].Fstname[0])
+ err = nil
+ break
+ }
+ }
+ return err
+}
+
+func tryGetmntent512(stat *Statfs_t) (err error) {
+ var mnt_ent_buffer struct {
+ header W_Mnth
+ filesys_info [512]W_Mntent
+ }
+ var buffer_size int = int(unsafe.Sizeof(mnt_ent_buffer))
+ fs_count, err := W_Getmntent((*byte)(unsafe.Pointer(&mnt_ent_buffer)), buffer_size)
+ if err != nil {
+ return err
+ }
+ err = ERANGE //return ERANGE if no match is found in this batch
+ for i := 0; i < fs_count; i++ {
+ if stat.Fsid == uint64(mnt_ent_buffer.filesys_info[i].Dev) {
+ stat.Type = uint32(mnt_ent_buffer.filesys_info[i].Fstname[0])
+ err = nil
+ break
+ }
+ }
+ return err
+}
+
+func tryGetmntent1024(stat *Statfs_t) (err error) {
+ var mnt_ent_buffer struct {
+ header W_Mnth
+ filesys_info [1024]W_Mntent
+ }
+ var buffer_size int = int(unsafe.Sizeof(mnt_ent_buffer))
+ fs_count, err := W_Getmntent((*byte)(unsafe.Pointer(&mnt_ent_buffer)), buffer_size)
+ if err != nil {
+ return err
+ }
+ err = ERANGE //return ERANGE if no match is found in this batch
+ for i := 0; i < fs_count; i++ {
+ if stat.Fsid == uint64(mnt_ent_buffer.filesys_info[i].Dev) {
+ stat.Type = uint32(mnt_ent_buffer.filesys_info[i].Fstname[0])
+ err = nil
+ break
+ }
+ }
+ return err
+}