70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
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/*
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* Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*/
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#include <linux/dsms.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/kmod.h>
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#include <linux/module.h>
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#include <linux/proc_fs.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include "dsms_access_control.h"
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#include "dsms_init.h"
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#include "dsms_kernel_api.h"
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#include "dsms_netlink.h"
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#include "dsms_preboot_buffer.h"
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#include "dsms_rate_limit.h"
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#include "dsms_test.h"
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noinline int dsms_send_message(const char *feature_code,
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const char *detail,
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int64_t value)
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{
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int ret;
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size_t len;
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void *address;
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if (!feature_code) {
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DSMS_LOG_ERROR("Invalid feature code.");
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ret = -EINVAL;
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goto exit_send;
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}
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if (!detail)
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detail = "";
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len = strnlen(detail, MAX_ALLOWED_DETAIL_LENGTH);
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DSMS_LOG_DEBUG("{'%s', '%s' (%zu bytes), %lld}",
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feature_code, detail, len, value);
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if (!dsms_is_initialized()) {
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DSMS_LOG_ERROR("DSMS not initialized yet.");
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ret = -EACCES;
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goto exit_send;
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}
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ret = dsms_check_message_rate_limit();
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if (ret != DSMS_SUCCESS)
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goto exit_send;
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address = __builtin_return_address(CALLER_FRAME);
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ret = dsms_verify_access(address);
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if (ret != DSMS_SUCCESS)
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goto exit_send;
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if (dsms_daemon_ready()) {
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ret = dsms_send_netlink_message(feature_code, detail, value);
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} else {
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ret = dsms_preboot_buffer_add(feature_code, detail, value);
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}
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exit_send:
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return ret;
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}
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