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97 lines
2 KiB
Go
97 lines
2 KiB
Go
// +build solaris,cgo
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package graphdriver
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/*
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#include <sys/statvfs.h>
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#include <stdlib.h>
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static inline struct statvfs *getstatfs(char *s) {
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struct statvfs *buf;
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int err;
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buf = (struct statvfs *)malloc(sizeof(struct statvfs));
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err = statvfs(s, buf);
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return buf;
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}
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*/
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import "C"
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import (
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"path/filepath"
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"unsafe"
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"github.com/docker/docker/pkg/mount"
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"github.com/sirupsen/logrus"
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)
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const (
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// FsMagicZfs filesystem id for Zfs
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FsMagicZfs = FsMagic(0x2fc12fc1)
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)
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var (
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// Slice of drivers that should be used in an order
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priority = []string{
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"zfs",
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}
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// FsNames maps filesystem id to name of the filesystem.
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FsNames = map[FsMagic]string{
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FsMagicZfs: "zfs",
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}
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)
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// GetFSMagic returns the filesystem id given the path.
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func GetFSMagic(rootpath string) (FsMagic, error) {
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return 0, nil
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}
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type fsChecker struct {
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t FsMagic
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}
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func (c *fsChecker) IsMounted(path string) bool {
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m, _ := Mounted(c.t, path)
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return m
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}
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// NewFsChecker returns a checker configured for the provided FsMagic
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func NewFsChecker(t FsMagic) Checker {
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return &fsChecker{
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t: t,
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}
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}
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// NewDefaultChecker returns a check that parses /proc/mountinfo to check
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// if the specified path is mounted.
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// No-op on Solaris.
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func NewDefaultChecker() Checker {
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return &defaultChecker{}
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}
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type defaultChecker struct {
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}
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func (c *defaultChecker) IsMounted(path string) bool {
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m, _ := mount.Mounted(path)
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return m
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}
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// Mounted checks if the given path is mounted as the fs type
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//Solaris supports only ZFS for now
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func Mounted(fsType FsMagic, mountPath string) (bool, error) {
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cs := C.CString(filepath.Dir(mountPath))
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buf := C.getstatfs(cs)
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// on Solaris buf.f_basetype contains ['z', 'f', 's', 0 ... ]
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if (buf.f_basetype[0] != 122) || (buf.f_basetype[1] != 102) || (buf.f_basetype[2] != 115) ||
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(buf.f_basetype[3] != 0) {
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logrus.Debugf("[zfs] no zfs dataset found for rootdir '%s'", mountPath)
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C.free(unsafe.Pointer(buf))
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return false, ErrPrerequisites
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}
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C.free(unsafe.Pointer(buf))
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C.free(unsafe.Pointer(cs))
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return true, nil
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}
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