1 files changed, 108 insertions, 0 deletions
diff --git a/fs/smb/server/mgmt/user_config.c b/fs/smb/server/mgmt/user_config.c
new file mode 100644
index 000000000000..56c9a38ca878
--- /dev/null
+++ b/fs/smb/server/mgmt/user_config.c
@@ -0,0 +1,108 @@
+// 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;
+}