iphlpapi: Fixed a problem with enumerating network interfaces.

Keep increasing the buffer until the returned length is more than two records smaller than the buffer we provided.

iphlpapi: Fixed a problem with enumerating network interfaces.
6b033cc1 · Ken Thomases · Alexandre Julliard · 9ff16186 · 6b033cc1
Commit 6b033cc1 authored Dec 21, 2006 by Ken Thomases Committed by Alexandre Julliard Dec 21, 2006
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ifenum.c dlls/iphlpapi/ifenum.c +1 -1

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--- a/dlls/iphlpapi/ifenum.c
+++ b/dlls/iphlpapi/ifenum.c
@@ -690,7 +690,7 @@ static DWORD enumIPAddresses(PDWORD pcAddresses, struct ifconf *ifc)
      ifc->ifc_buf = HeapAlloc(GetProcessHeap(), 0, ifc->ifc_len);
      ioctlRet = ioctl(fd, SIOCGIFCONF, ifc);
    } while (ioctlRet == 0 &&
-     ifc->ifc_len == (sizeof(struct ifreq) * guessedNumAddresses));
+     ifc->ifc_len > (sizeof(struct ifreq) * (guessedNumAddresses - 2)));

    if (ioctlRet == 0) {
      ifPtr = ifc->ifc_buf;