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Remove pre-2.4.21 Linux kernel support.

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This commit is contained in:
Joseph Myers
2012-07-25 21:19:13 +00:00
parent 842a39cd1a
commit 89b4b02f42
23 changed files with 188 additions and 519 deletions
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83
sysdeps/unix/sysv/linux/if_index.c
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@ -74,90 +74,13 @@ if_freenameindex (struct if_nameindex *ifn)
libc_hidden_def (if_freenameindex)
#if __ASSUME_NETLINK_SUPPORT == 0
static struct if_nameindex *
if_nameindex_ioctl (void)
{
int fd = __opensock ();
struct ifconf ifc;
unsigned int nifs, i;
int rq_len;
struct if_nameindex *idx = NULL;
# define RQ_IFS 4
if (fd < 0)
return NULL;
ifc.ifc_buf = NULL;
/* We may be able to get the needed buffer size directly, rather than
guessing. */
ifc.ifc_buf = NULL;
ifc.ifc_len = 0;
if (__ioctl (fd, SIOCGIFCONF, &ifc) < 0 || ifc.ifc_len == 0)
rq_len = RQ_IFS * sizeof (struct ifreq);
else
rq_len = ifc.ifc_len;
/* Read all the interfaces out of the kernel. */
ifc.ifc_buf = alloca (rq_len);
ifc.ifc_len = rq_len;
if (__ioctl (fd, SIOCGIFCONF, &ifc) < 0)
{
close_not_cancel_no_status (fd);
return NULL;
}
nifs = ifc.ifc_len / sizeof (struct ifreq);
idx = malloc ((nifs + 1) * sizeof (struct if_nameindex));
if (idx == NULL)
{
close_not_cancel_no_status (fd);
__set_errno (ENOBUFS);
return NULL;
}
for (i = 0; i < nifs; ++i)
{
struct ifreq *ifr = &ifc.ifc_req[i];
idx[i].if_name = __strdup (ifr->ifr_name);
if (idx[i].if_name == NULL
|| __ioctl (fd, SIOCGIFINDEX, ifr) < 0)
{
int saved_errno = errno;
unsigned int j;
for (j = 0; j < i; ++j)
free (idx[j].if_name);
free (idx);
close_not_cancel_no_status (fd);
if (saved_errno == EINVAL)
saved_errno = ENOSYS;
else if (saved_errno == ENOMEM)
saved_errno = ENOBUFS;
__set_errno (saved_errno);
return NULL;
}
idx[i].if_index = ifr->ifr_ifindex;
}
idx[i].if_index = 0;
idx[i].if_name = NULL;
close_not_cancel_no_status (fd);
return idx;
}
#endif
static struct if_nameindex *
if_nameindex_netlink (void)
{
struct netlink_handle nh = { 0, 0, 0, NULL, NULL };
struct if_nameindex *idx = NULL;
if (__no_netlink_support || __netlink_open (&nh) < 0)
if (__netlink_open (&nh) < 0)
return NULL;
@ -274,10 +197,6 @@ if_nameindex (void)
return NULL;
#else
struct if_nameindex *result = if_nameindex_netlink ();
# if __ASSUME_NETLINK_SUPPORT == 0
if (__no_netlink_support)
result = if_nameindex_ioctl ();
# endif
return result;
#endif
}