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* inet/test-ifaddrs.c (main: addr_string): Handle null SA.

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Grok AF_LINK if defined.
	From Momchil Velikov <velco@fadata.bg>.

	* sysdeps/gnu/ifaddrs.c (getifaddrs): If ioctl fails for netmask,
	brdaddr, or dstaddr, just set those pointers to null and don't fail.
	Reported by Momchil Velikov <velco@fadata.bg>.

	* sysdeps/generic/ifreq.h (__if_nextreq) [_HAVE_SA_LEN]: If sa_len
	is > sizeof IFR->ifa_addr, advance past the whole longer length.
	(__ifreq): Count up NIFS that way too.
	Reported by Momchil Velikov <velco@fadata.bg>.

	* sysdeps/mach/hurd/lchmod.c: Include <fcntl.h>.
This commit is contained in:
Roland McGrath
2002-11-26 03:29:06 +00:00
parent 14fa7a214c
commit 6938e63f71
4 changed files with 64 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
sysdeps/generic/ifreq.h
View File

@ -24,6 +24,15 @@
#include <sys/socket.h>
#include <sys/ioctl.h>
static inline struct ifreq *
__if_nextreq (struct ifreq *ifr)
{
#ifdef _HAVE_SA_LEN
if (ifr->ifa_addr > sizeof ifr->ifa_addr)
return (struct ifreq *) ((char *) &ifr->ifa_addr + ifr->ifa_addr.sa_len);
#endif
return ifr + 1;
}
static inline void
__ifreq (struct ifreq **ifreqs, int *num_ifs, int sockfd)
@ -63,23 +72,28 @@ __ifreq (struct ifreq **ifreqs, int *num_ifs, int sockfd)
}
while (rq_len < sizeof (struct ifreq) + ifc.ifc_len);
nifs = ifc.ifc_len / sizeof (struct ifreq);
if (fd != sockfd)
__close (fd);
#ifdef _HAVE_SA_LEN
struct ifreq *ifr = ifreqs;
nifs = 0;
while ((char *) ifr < ifc.ifc_buf + ifc.ifc_len)
{
++nifs;
ifr = __if_nextreq (ifr);
if (ifr == NULL)
break;
}
#else
nifs = ifc.ifc_len / sizeof (struct ifreq);
#endif
*num_ifs = nifs;
*ifreqs = realloc (ifc.ifc_buf, nifs * sizeof (struct ifreq));
}
static inline struct ifreq *
__if_nextreq (struct ifreq *ifr)
{
return ifr + 1;
}
static inline void
__if_freereq (struct ifreq *ifreqs, int num_ifs)
{