fs/ksmbd/mgmt/user_config.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *   Copyright (C) 2018 Samsung Electronics Co., Ltd.
   4  */
   5
   6 #include <linux/slab.h>
   7 #include <linux/mm.h>
   8
   9 #include "user_config.h"
  10 #include "../transport_ipc.h"
  11
  12 struct ksmbd_user *ksmbd_login_user(const char *account)
  13 {
  14         struct ksmbd_login_response *resp;
  15         struct ksmbd_user *user = NULL;
  16
  17         resp = ksmbd_ipc_login_request(account);
  18         if (!resp)
  19                 return NULL;
  20
  21         if (!(resp->status & KSMBD_USER_FLAG_OK))
  22                 goto out;
  23
  24         user = ksmbd_alloc_user(resp);
  25 out:
  26         kvfree(resp);
  27         return user;
  28 }
  29
  30 struct ksmbd_user *ksmbd_alloc_user(struct ksmbd_login_response *resp)
  31 {
  32         struct ksmbd_user *user = NULL;
  33
  34         user = kmalloc(sizeof(struct ksmbd_user), GFP_KERNEL);
  35         if (!user)
  36                 return NULL;
  37
  38         user->name = kstrdup(resp->account, GFP_KERNEL);
  39         user->flags = resp->status;
  40         user->gid = resp->gid;
  41         user->uid = resp->uid;
  42         user->passkey_sz = resp->hash_sz;
  43         user->passkey = kmalloc(resp->hash_sz, GFP_KERNEL);
  44         if (user->passkey)
  45                 memcpy(user->passkey, resp->hash, resp->hash_sz);
  46
  47         if (!user->name || !user->passkey) {
  48                 kfree(user->name);
  49                 kfree(user->passkey);
  50                 kfree(user);
  51                 user = NULL;
  52         }
  53         return user;
  54 }
  55
  56 void ksmbd_free_user(struct ksmbd_user *user)
  57 {
  58         ksmbd_ipc_logout_request(user->name, user->flags);
  59         kfree(user->name);
  60         kfree(user->passkey);
  61         kfree(user);
  62 }
  63
  64 int ksmbd_anonymous_user(struct ksmbd_user *user)
  65 {
  66         if (user->name[0] == '\0')
  67                 return 1;
  68         return 0;
  69 }