mirror of
https://github.com/hanzoai/volume.git
synced 2026-11-03 04:24:40 +00:00
zeekay
b61441f7d7
A fork of Rancher's local-path-provisioner at v0.0.36. The behaviour is unchanged and deliberately so — a directory on the node a pod lands on is the right thing for a disk. What changes is identity. The provisioner answers to hanzo.ai/volume rather than rancher.io/local-path. That is not branding: two provisioners sharing one name race for the same claims, and a stock k3s carries the upstream one, so a cluster running both would settle our storage by chance. Data lives at /var/lib/hanzo/volume, so reading a Hanzo cluster does not mean learning another vendor's directory. Apache-2.0 as published, unaltered, with Rancher's attribution in NOTICE. The README says what this is not: durability. A volume here dies with its node. That is hanzoai/replicate's question, one layer up, and keeping the two apart is what lets the disk stay this simple.
112 lines
2.3 KiB
Go
112 lines
2.3 KiB
Go
// Copyright 2016 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.
|
|
|
|
package unix
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"strconv"
|
|
)
|
|
|
|
// Pledge implements the pledge syscall.
|
|
//
|
|
// This changes both the promises and execpromises; use PledgePromises or
|
|
// PledgeExecpromises to only change the promises or execpromises
|
|
// respectively.
|
|
//
|
|
// For more information see pledge(2).
|
|
func Pledge(promises, execpromises string) error {
|
|
if err := pledgeAvailable(); err != nil {
|
|
return err
|
|
}
|
|
|
|
pptr, err := BytePtrFromString(promises)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
exptr, err := BytePtrFromString(execpromises)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return pledge(pptr, exptr)
|
|
}
|
|
|
|
// PledgePromises implements the pledge syscall.
|
|
//
|
|
// This changes the promises and leaves the execpromises untouched.
|
|
//
|
|
// For more information see pledge(2).
|
|
func PledgePromises(promises string) error {
|
|
if err := pledgeAvailable(); err != nil {
|
|
return err
|
|
}
|
|
|
|
pptr, err := BytePtrFromString(promises)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return pledge(pptr, nil)
|
|
}
|
|
|
|
// PledgeExecpromises implements the pledge syscall.
|
|
//
|
|
// This changes the execpromises and leaves the promises untouched.
|
|
//
|
|
// For more information see pledge(2).
|
|
func PledgeExecpromises(execpromises string) error {
|
|
if err := pledgeAvailable(); err != nil {
|
|
return err
|
|
}
|
|
|
|
exptr, err := BytePtrFromString(execpromises)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return pledge(nil, exptr)
|
|
}
|
|
|
|
// majmin returns major and minor version number for an OpenBSD system.
|
|
func majmin() (major int, minor int, err error) {
|
|
var v Utsname
|
|
err = Uname(&v)
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
major, err = strconv.Atoi(string(v.Release[0]))
|
|
if err != nil {
|
|
err = errors.New("cannot parse major version number returned by uname")
|
|
return
|
|
}
|
|
|
|
minor, err = strconv.Atoi(string(v.Release[2]))
|
|
if err != nil {
|
|
err = errors.New("cannot parse minor version number returned by uname")
|
|
return
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
// pledgeAvailable checks for availability of the pledge(2) syscall
|
|
// based on the running OpenBSD version.
|
|
func pledgeAvailable() error {
|
|
maj, min, err := majmin()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Require OpenBSD 6.4 as a minimum.
|
|
if maj < 6 || (maj == 6 && min <= 3) {
|
|
return fmt.Errorf("cannot call Pledge on OpenBSD %d.%d", maj, min)
|
|
}
|
|
|
|
return nil
|
|
}
|