Copyright 2011 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 user

import
Current returns the current user. The first call will cache the current user information. Subsequent calls will return the cached value and will not reflect changes to the current user.
func () (*User, error) {
	cache.Do(func() { cache.u, cache.err = current() })
	if cache.err != nil {
		return nil, cache.err
	}
	 := *cache.u // copy
	return &, nil
}
cache of the current user
var cache struct {
	sync.Once
	u   *User
	err error
}
Lookup looks up a user by username. If the user cannot be found, the returned error is of type UnknownUserError.
func ( string) (*User, error) {
	if ,  := Current();  == nil && .Username ==  {
		return , 
	}
	return lookupUser()
}
LookupId looks up a user by userid. If the user cannot be found, the returned error is of type UnknownUserIdError.
func ( string) (*User, error) {
	if ,  := Current();  == nil && .Uid ==  {
		return , 
	}
	return lookupUserId()
}
LookupGroup looks up a group by name. If the group cannot be found, the returned error is of type UnknownGroupError.
func ( string) (*Group, error) {
	return lookupGroup()
}
LookupGroupId looks up a group by groupid. If the group cannot be found, the returned error is of type UnknownGroupIdError.
func ( string) (*Group, error) {
	return lookupGroupId()
}
GroupIds returns the list of group IDs that the user is a member of.
func ( *User) () ([]string, error) {
	return listGroups()