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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2018 Samsung Electronics Co., Ltd.
*/
#include <linux/slab.h>
#include <linux/mm.h>
#include "user_config.h"
#include "../transport_ipc.h"
struct ksmbd_user *ksmbd_login_user(const char *account)
{
struct ksmbd_login_response *resp;
struct ksmbd_login_response_ext *resp_ext = NULL;
struct ksmbd_user *user = NULL;
resp = ksmbd_ipc_login_request(account);
if (!resp)
return NULL;
if (!(resp->status & KSMBD_USER_FLAG_OK))
goto out;
if (resp->status & KSMBD_USER_FLAG_EXTENSION)
resp_ext = ksmbd_ipc_login_request_ext(account);
user = ksmbd_alloc_user(resp, resp_ext);
out:
kvfree(resp);
return user;
}
struct ksmbd_user *ksmbd_alloc_user(struct ksmbd_login_response *resp,
struct ksmbd_login_response_ext *resp_ext)
{
struct ksmbd_user *user;
user = kmalloc(sizeof(struct ksmbd_user), KSMBD_DEFAULT_GFP);
if (!user)
return NULL;
user->name = kstrdup(resp->account, KSMBD_DEFAULT_GFP);
user->flags = resp->status;
user->gid = resp->gid;
user->uid = resp->uid;
user->passkey_sz = resp->hash_sz;
user->passkey = kmalloc(resp->hash_sz, KSMBD_DEFAULT_GFP);
if (user->passkey)
memcpy(user->passkey, resp->hash, resp->hash_sz);
user->ngroups = 0;
user->sgid = NULL;
if (!user->name || !user->passkey)
goto err_free;
if (resp_ext) {
if (resp_ext->ngroups > NGROUPS_MAX) {
pr_err("ngroups(%u) from login response exceeds max groups(%d)\n",
resp_ext->ngroups, NGROUPS_MAX);
goto err_free;
}
user->sgid = kmemdup(resp_ext->____payload,
resp_ext->ngroups * sizeof(gid_t),
KSMBD_DEFAULT_GFP);
if (!user->sgid)
goto err_free;
user->ngroups = resp_ext->ngroups;
ksmbd_debug(SMB, "supplementary groups : %d\n", user->ngroups);
}
return user;
err_free:
kfree(user->name);
kfree(user->passkey);
kfree(user);
return NULL;
}
void ksmbd_free_user(struct ksmbd_user *user)
{
ksmbd_ipc_logout_request(user->name, user->flags);
kfree(user->sgid);
kfree(user->name);
kfree(user->passkey);
kfree(user);
}
int ksmbd_anonymous_user(struct ksmbd_user *user)
{
if (user->name[0] == '\0')
return 1;
return 0;
}
bool ksmbd_compare_user(struct ksmbd_user *u1, struct ksmbd_user *u2)
{
if (strcmp(u1->name, u2->name))
return false;
if (memcmp(u1->passkey, u2->passkey, u1->passkey_sz))
return false;
return true;
}
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