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Cygwin: net: unify gethostname/getdomainname 

Use info from same source (GetNetworkParams).
Also move getdomainname near gethostname in source.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen 2019-01-24 14:22:09 +01:00
parent c6171b9fde
commit 2166f7dc0d
1 changed files with 36 additions and 41 deletions
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77
winsup/cygwin/net.cc
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@ -710,30 +710,24 @@ cygwin_getservbyport (int port, const char *proto)
extern "C" int
cygwin_gethostname (char *name, size_t len)
{
int res = -1;
__try
{
if (gethostname (name, len))
{
DWORD local_len = len;
PFIXED_INFO info = NULL;
ULONG size = 0;
if (!GetComputerNameExA (ComputerNameDnsHostname, name,
&local_len))
{
if (GetLastError () == ERROR_MORE_DATA)
set_errno (ENAMETOOLONG);
else
set_winsock_errno ();
__leave;
}
if (GetNetworkParams(info, &size) == ERROR_BUFFER_OVERFLOW
&& (info = (PFIXED_INFO) alloca(size))
&& GetNetworkParams(info, &size) == ERROR_SUCCESS)
{
strncpy(name, info->HostName, len);
debug_printf ("gethostname %s", name);
return 0;
}
debug_printf ("name %s", name);
res = 0;
__seterrno ();
}
__except (EFAULT) {}
__except (EFAULT)
__endtry
return res;
return -1;
}
extern "C" int
@ -750,6 +744,30 @@ sethostname (const char *name, size_t len)
return 0;
}
/* getdomainname: 4.4BSD */
extern "C" int
getdomainname (char *domain, size_t len)
{
__try
{
PFIXED_INFO info = NULL;
ULONG size = 0;
if (GetNetworkParams(info, &size) == ERROR_BUFFER_OVERFLOW
&& (info = (PFIXED_INFO) alloca(size))
&& GetNetworkParams(info, &size) == ERROR_SUCCESS)
{
strncpy(domain, info->DomainName, len);
debug_printf ("gethostname %s", domain);
return 0;
}
__seterrno ();
}
__except (EFAULT)
__endtry
return -1;
}
/* exported as gethostbyname: POSIX.1-2001 */
extern "C" struct hostent *
cygwin_gethostbyname (const char *name)
@ -1406,29 +1424,6 @@ cygwin_send (int fd, const void *buf, size_t len, int flags)
return res;
}
/* getdomainname: 4.4BSD */
extern "C" int
getdomainname (char *domain, size_t len)
{
__try
{
PFIXED_INFO info = NULL;
ULONG size = 0;
if (GetNetworkParams(info, &size) == ERROR_BUFFER_OVERFLOW
&& (info = (PFIXED_INFO) alloca(size))
&& GetNetworkParams(info, &size) == ERROR_SUCCESS)
{
strncpy(domain, info->DomainName, len);
return 0;
}
__seterrno ();
}
__except (EFAULT)
__endtry
return -1;
}
/* Fill out an ifconf struct. */
struct gaa_wa {