mirror of
https://github.com/zephyrproject-rtos/zephyr
synced 2025-08-11 11:35:50 +00:00
aac0f98d1d
Add a macro in public header that represents maximum hostname string length without terminating NULL character. This will allow other modules, such as offloaded network drivers, to know how much space is needed to allocate in order to fit whole hostname. Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>
65 lines
1.3 KiB
C
65 lines
1.3 KiB
C
/** @file
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* @brief Hostname configuration
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*/
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/*
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* Copyright (c) 2017 Intel Corporation
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <logging/log.h>
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LOG_MODULE_REGISTER(net_hostname, CONFIG_NET_HOSTNAME_LOG_LEVEL);
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#include <zephyr.h>
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#include <net/hostname.h>
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#include <net/net_core.h>
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static char hostname[NET_HOSTNAME_MAX_LEN + 1];
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const char *net_hostname_get(void)
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{
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return hostname;
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}
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#if defined(CONFIG_NET_HOSTNAME_UNIQUE)
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int net_hostname_set_postfix(const uint8_t *hostname_postfix,
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int postfix_len)
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{
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static bool postfix_set;
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int pos = 0;
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int i;
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if (postfix_set) {
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return -EALREADY;
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}
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NET_ASSERT(postfix_len > 0);
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/* Note that we convert the postfix to hex (2 chars / byte) */
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if ((postfix_len * 2) >
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(NET_HOSTNAME_MAX_LEN - (sizeof(CONFIG_NET_HOSTNAME) - 1))) {
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return -EMSGSIZE;
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}
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for (i = 0; i < postfix_len; i++, pos += 2) {
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snprintk(&hostname[sizeof(CONFIG_NET_HOSTNAME) - 1 + pos],
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2 + 1, "%02x", hostname_postfix[i]);
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}
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NET_DBG("New hostname %s", log_strdup(hostname));
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postfix_set = true;
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return 0;
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}
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#endif /* CONFIG_NET_HOSTNAME_UNIQUE */
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void net_hostname_init(void)
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{
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memcpy(hostname, CONFIG_NET_HOSTNAME, sizeof(CONFIG_NET_HOSTNAME) - 1);
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NET_DBG("Hostname set to %s", CONFIG_NET_HOSTNAME);
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}
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