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netutils/dhcpc: try to get the host name via syscall first

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Change-Id: I22aa8316f5c126bf3bafe9476a27a43c01da6129
Signed-off-by: chao.an <anchao@xiaomi.com>
This commit is contained in:
chao.an 2020-08-04 14:34:18 +08:00 committed by Xiang Xiao
parent 40f559bffc
commit 77aa0e8908
1 changed files with 10 additions and 2 deletions
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12
netutils/dhcpc/dhcpc.c
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@ -219,6 +219,7 @@ static FAR uint8_t *dhcpc_addend(FAR uint8_t *optptr)
static int dhcpc_sendmsg(FAR struct dhcpc_state_s *pdhcpc,
FAR struct dhcpc_state *presult, int msgtype)
{
char hostname[HOST_NAME_MAX];
struct sockaddr_in addr;
FAR uint8_t *pend;
in_addr_t serverid = INADDR_BROADCAST;
@ -241,6 +242,13 @@ static int dhcpc_sendmsg(FAR struct dhcpc_state_s *pdhcpc,
pend = &pdhcpc->packet.options[4];
pend = dhcpc_addmsgtype(pend, msgtype);
/* Get the current host name */
if (gethostname(hostname, sizeof(hostname)))
{
strncpy(hostname, CONFIG_NETUTILS_DHCPC_HOST_NAME, HOST_NAME_MAX);
}
/* Handle the message specific settings */
switch (msgtype)
@ -254,7 +262,7 @@ static int dhcpc_sendmsg(FAR struct dhcpc_state_s *pdhcpc,
pdhcpc->packet.flags = HTONS(BOOTP_BROADCAST); /* Broadcast bit. */
pend = dhcpc_addhostname(CONFIG_NETUTILS_DHCPC_HOST_NAME, pend);
pend = dhcpc_addhostname(hostname, pend);
pend = dhcpc_addreqoptions(pend);
break;
@ -267,7 +275,7 @@ static int dhcpc_sendmsg(FAR struct dhcpc_state_s *pdhcpc,
pdhcpc->packet.flags = HTONS(BOOTP_BROADCAST); /* Broadcast bit. */
pend = dhcpc_addhostname(CONFIG_NETUTILS_DHCPC_HOST_NAME, pend);
pend = dhcpc_addhostname(hostname, pend);
pend = dhcpc_addserverid(&pdhcpc->serverid, pend);
pend = dhcpc_addreqipaddr(&pdhcpc->ipaddr, pend);
break;