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Current Path: /opt/golang/1.22.0/src/os/user

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📁 ..
📄 cgo_listgroups_unix.go(1.74 KB)
📄 cgo_lookup_cgo.go(3.44 KB)
📄 cgo_lookup_syscall.go(2.2 KB)
📄 cgo_lookup_unix.go(5.05 KB)
📄 cgo_unix_test.go(595 B)
📄 cgo_user_test.go(234 B)
📄 getgrouplist_syscall.go(424 B)
📄 getgrouplist_unix.go(657 B)
📄 listgroups_stub.go(369 B)
📄 listgroups_unix.go(2.88 KB)
📄 listgroups_unix_test.go(2.96 KB)
📄 lookup.go(1.79 KB)
📄 lookup_android.go(676 B)
📄 lookup_plan9.go(1.28 KB)
📄 lookup_stubs.go(1.78 KB)
📄 lookup_unix.go(6.04 KB)
📄 lookup_unix_test.go(7.33 KB)
📄 lookup_windows.go(11.8 KB)
📄 user.go(2.91 KB)
📄 user_test.go(3.98 KB)

Editing: lookup.go

// 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 "sync"

const (
	userFile  = "/etc/passwd"
	groupFile = "/etc/group"
)

var colon = []byte{':'}

// 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 Current() (*User, error) {
	cache.Do(func() { cache.u, cache.err = current() })
	if cache.err != nil {
		return nil, cache.err
	}
	u := *cache.u // copy
	return &u, 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 Lookup(username string) (*User, error) {
	if u, err := Current(); err == nil && u.Username == username {
		return u, err
	}
	return lookupUser(username)
}

// LookupId looks up a user by userid. If the user cannot be found, the
// returned error is of type UnknownUserIdError.
func LookupId(uid string) (*User, error) {
	if u, err := Current(); err == nil && u.Uid == uid {
		return u, err
	}
	return lookupUserId(uid)
}

// LookupGroup looks up a group by name. If the group cannot be found, the
// returned error is of type UnknownGroupError.
func LookupGroup(name string) (*Group, error) {
	return lookupGroup(name)
}

// LookupGroupId looks up a group by groupid. If the group cannot be found, the
// returned error is of type UnknownGroupIdError.
func LookupGroupId(gid string) (*Group, error) {
	return lookupGroupId(gid)
}

// GroupIds returns the list of group IDs that the user is a member of.
func (u *User) GroupIds() ([]string, error) {
	return listGroups(u)
}

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Editing: lookup.go

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