lookup_plan9.go

Documentation: os/user

     1  // Copyright 2013 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  package user
     6  
     7  import (
     8  	"fmt"
     9  	"os"
    10  	"syscall"
    11  )
    12  
    13  // Partial os/user support on Plan 9.
    14  // Supports Current(), but not Lookup()/LookupId().
    15  // The latter two would require parsing /adm/users.
    16  
    17  func init() {
    18  	userImplemented = false
    19  	groupImplemented = false
    20  	groupListImplemented = false
    21  }
    22  
    23  var (
    24  	// unused variables (in this implementation)
    25  	// modified during test to exercise code paths in the cgo implementation.
    26  	userBuffer  = 0
    27  	groupBuffer = 0
    28  )
    29  
    30  func current() (*User, error) {
    31  	ubytes, err := os.ReadFile("/dev/user")
    32  	if err != nil {
    33  		return nil, fmt.Errorf("user: %s", err)
    34  	}
    35  
    36  	uname := string(ubytes)
    37  
    38  	u := &User{
    39  		Uid:      uname,
    40  		Gid:      uname,
    41  		Username: uname,
    42  		Name:     uname,
    43  		HomeDir:  os.Getenv("home"),
    44  	}
    45  
    46  	return u, nil
    47  }
    48  
    49  func lookupUser(username string) (*User, error) {
    50  	return nil, syscall.EPLAN9
    51  }
    52  
    53  func lookupUserId(uid string) (*User, error) {
    54  	return nil, syscall.EPLAN9
    55  }
    56  
    57  func lookupGroup(groupname string) (*Group, error) {
    58  	return nil, syscall.EPLAN9
    59  }
    60  
    61  func lookupGroupId(string) (*Group, error) {
    62  	return nil, syscall.EPLAN9
    63  }
    64  
    65  func listGroups(*User) ([]string, error) {
    66  	return nil, syscall.EPLAN9
    67  }
    68
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