github.com/avfs/avfs@v0.33.1-0.20240303173310-c6ba67c33eb7/idm/memidm/memidm_cfg.go (about)

     1  //
     2  //  Copyright 2020 The AVFS authors
     3  //
     4  //  Licensed under the Apache License, Version 2.0 (the "License");
     5  //  you may not use this file except in compliance with the License.
     6  //  You may obtain a copy of the License at
     7  //
     8  //  	http://www.apache.org/licenses/LICENSE-2.0
     9  //
    10  //  Unless required by applicable law or agreed to in writing, software
    11  //  distributed under the License is distributed on an "AS IS" BASIS,
    12  //  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  //  See the License for the specific language governing permissions and
    14  //  limitations under the License.
    15  //
    16  
    17  package memidm
    18  
    19  import "github.com/avfs/avfs"
    20  
    21  // New creates a new identity manager.
    22  func New() *MemIdm {
    23  	return NewWithOptions(nil)
    24  }
    25  
    26  // NewWithOptions creates a new identity manager using Options.
    27  func NewWithOptions(opts *Options) *MemIdm {
    28  	if opts == nil {
    29  		opts = &Options{OSType: avfs.CurrentOSType()}
    30  	}
    31  
    32  	idm := &MemIdm{
    33  		groupsByName: make(groupsByName),
    34  		groupsById:   make(groupsById),
    35  		usersByName:  make(usersByName),
    36  		usersById:    make(usersById),
    37  		maxGid:       minGid,
    38  		maxUid:       minUid,
    39  	}
    40  
    41  	_ = idm.SetFeatures(avfs.FeatIdentityMgr)
    42  	_ = idm.SetOSType(opts.OSType)
    43  
    44  	adminGroupName := avfs.AdminGroupName(idm.OSType())
    45  	adminUserName := avfs.AdminUserName(idm.OSType())
    46  
    47  	idm.adminGroup = &MemGroup{
    48  		name: adminGroupName,
    49  		gid:  0,
    50  	}
    51  
    52  	idm.adminUser = &MemUser{
    53  		name: adminUserName,
    54  		uid:  0,
    55  		gid:  0,
    56  	}
    57  
    58  	idm.groupsById[0] = idm.adminGroup
    59  	idm.groupsByName[adminGroupName] = idm.adminGroup
    60  	idm.usersById[0] = idm.adminUser
    61  	idm.usersByName[adminUserName] = idm.adminUser
    62  
    63  	return idm
    64  }
    65  
    66  // Type returns the type of the Identity manager.
    67  func (*MemIdm) Type() string {
    68  	return "MemIdm"
    69  }