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_login_response_ext *resp_ext = NULL; 16 struct ksmbd_user *user = NULL; 17 18 resp = ksmbd_ipc_login_request(account); 19 if (!resp) 20 return NULL; 21 22 if (!(resp->status & KSMBD_USER_FLAG_OK)) 23 goto out; 24 25 if (resp->status & KSMBD_USER_FLAG_EXTENSION) 26 resp_ext = ksmbd_ipc_login_request_ext(account); 27 28 user = ksmbd_alloc_user(resp, resp_ext); 29 out: 30 kvfree(resp); 31 return user; 32 } 33 34 struct ksmbd_user *ksmbd_alloc_user(struct ksmbd_login_response *resp, 35 struct ksmbd_login_response_ext *resp_ext) 36 { 37 struct ksmbd_user *user; 38 39 user = kmalloc_obj(struct ksmbd_user, KSMBD_DEFAULT_GFP); 40 if (!user) 41 return NULL; 42 43 user->name = kstrdup(resp->account, KSMBD_DEFAULT_GFP); 44 user->flags = resp->status; 45 user->gid = resp->gid; 46 user->uid = resp->uid; 47 user->passkey_sz = resp->hash_sz; 48 user->passkey = kmalloc(resp->hash_sz, KSMBD_DEFAULT_GFP); 49 if (user->passkey) 50 memcpy(user->passkey, resp->hash, resp->hash_sz); 51 52 user->ngroups = 0; 53 user->sgid = NULL; 54 55 if (!user->name || !user->passkey) 56 goto err_free; 57 58 if (resp_ext) { 59 user->sgid = kmemdup(resp_ext->____payload, 60 resp_ext->ngroups * sizeof(gid_t), 61 KSMBD_DEFAULT_GFP); 62 if (!user->sgid) 63 goto err_free; 64 65 user->ngroups = resp_ext->ngroups; 66 ksmbd_debug(SMB, "supplementary groups : %d\n", user->ngroups); 67 } 68 69 return user; 70 71 err_free: 72 kfree(user->name); 73 kfree(user->passkey); 74 kfree(user); 75 return NULL; 76 } 77 78 void ksmbd_free_user(struct ksmbd_user *user) 79 { 80 ksmbd_ipc_logout_request(user->name, user->flags); 81 kfree(user->sgid); 82 kfree(user->name); 83 kfree(user->passkey); 84 kfree(user); 85 } 86 87 bool ksmbd_anonymous_user(struct ksmbd_user *user) 88 { 89 return user->name[0] == '\0'; 90 } 91 92 bool ksmbd_compare_user(struct ksmbd_user *u1, struct ksmbd_user *u2) 93 { 94 if (strcmp(u1->name, u2->name)) 95 return false; 96 if (memcmp(u1->passkey, u2->passkey, u1->passkey_sz)) 97 return false; 98 99 return true; 100 } 101