diff options
Diffstat (limited to 'vendor/golang.org/x/sys/unix/dev_zos.go')
| -rw-r--r-- | vendor/golang.org/x/sys/unix/dev_zos.go | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/vendor/golang.org/x/sys/unix/dev_zos.go b/vendor/golang.org/x/sys/unix/dev_zos.go new file mode 100644 index 0000000..bb6a64f --- /dev/null +++ b/vendor/golang.org/x/sys/unix/dev_zos.go | |||
| @@ -0,0 +1,28 @@ | |||
| 1 | // Copyright 2020 The Go Authors. All rights reserved. | ||
| 2 | // Use of this source code is governed by a BSD-style | ||
| 3 | // license that can be found in the LICENSE file. | ||
| 4 | |||
| 5 | //go:build zos && s390x | ||
| 6 | |||
| 7 | // Functions to access/create device major and minor numbers matching the | ||
| 8 | // encoding used by z/OS. | ||
| 9 | // | ||
| 10 | // The information below is extracted and adapted from <sys/stat.h> macros. | ||
| 11 | |||
| 12 | package unix | ||
| 13 | |||
| 14 | // Major returns the major component of a z/OS device number. | ||
| 15 | func Major(dev uint64) uint32 { | ||
| 16 | return uint32((dev >> 16) & 0x0000FFFF) | ||
| 17 | } | ||
| 18 | |||
| 19 | // Minor returns the minor component of a z/OS device number. | ||
| 20 | func Minor(dev uint64) uint32 { | ||
| 21 | return uint32(dev & 0x0000FFFF) | ||
| 22 | } | ||
| 23 | |||
| 24 | // Mkdev returns a z/OS device number generated from the given major and minor | ||
| 25 | // components. | ||
| 26 | func Mkdev(major, minor uint32) uint64 { | ||
| 27 | return (uint64(major) << 16) | uint64(minor) | ||
| 28 | } | ||