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qga: move qga_get_host_name()

Browse source 
The function is specific to qemu-ga, no need to share it in QEMU.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Konstantin Kostiuk <kkostiuk@redhat.com>
Message-Id: <20220420132624.2439741-32-marcandre.lureau@redhat.com>
This commit is contained in:
Marc-André Lureau 2022-04-20 17:26:14 +04:00
parent 756a98dd70
commit 548fb0da73
7 changed files with 60 additions and 59 deletions
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35
qga/commands-posix.c
View file

@ -3278,3 +3278,38 @@ GuestDeviceInfoList *qmp_guest_get_devices(Error **errp)
return NULL;
}
#ifndef HOST_NAME_MAX
# ifdef _POSIX_HOST_NAME_MAX
# define HOST_NAME_MAX _POSIX_HOST_NAME_MAX
# else
# define HOST_NAME_MAX 255
# endif
#endif
char *qga_get_host_name(Error **errp)
{
long len = -1;
g_autofree char *hostname = NULL;
#ifdef _SC_HOST_NAME_MAX
len = sysconf(_SC_HOST_NAME_MAX);
#endif /* _SC_HOST_NAME_MAX */
if (len < 0) {
len = HOST_NAME_MAX;
}
/* Unfortunately, gethostname() below does not guarantee a
* NULL terminated string. Therefore, allocate one byte more
* to be sure. */
hostname = g_new0(char, len + 1);
if (gethostname(hostname, len) < 0) {
error_setg_errno(errp, errno,
"cannot get hostname");
return NULL;
}
return g_steal_pointer(&hostname);
}