diff options
Diffstat (limited to 'elapi/elapi_ioctl.c')
| -rw-r--r-- | elapi/elapi_ioctl.c | 142 |
1 files changed, 0 insertions, 142 deletions
diff --git a/elapi/elapi_ioctl.c b/elapi/elapi_ioctl.c deleted file mode 100644 index c2a42a1..0000000 --- a/elapi/elapi_ioctl.c +++ /dev/null @@ -1,142 +0,0 @@ -/* - ELAPI - - Special platform specific functions related to networking - - Copyright (C) Dmitri Pal <dpal@redhat.com> 2009 - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - You should have received a copy of the GNU General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. -*/ - -#define _GNU_SOURCE - -#include <sys/types.h> -#include <sys/socket.h> -#include <sys/ioctl.h> -#include <stdlib.h> -#include <errno.h> - -#include "elapi_ioctl.h" -#include "trace.h" -#include "config.h" - -#ifndef HAVE_GETIFADDRS - -/* These functions are taken form Stevens's - * UNIX Network Programming Volume 1 - */ - -int elapi_get_addrlist(struct ifconf *ifc) -{ - int sockfd; - int length, lastlen; - int error; - char *buffer; - - TRACE_FLOW_STRING("elapi_get_addrlist", "Entry"); - - /* Open socket */ - sockfd = socket(AF_INET, SOCK_DGRAM, 0); - - lastlen = 0; - length = INTERFACE_NUM_GUESS * sizeof(struct ifreq); - - /* Allocate right amount of memory */ - /* This is a trick from Stevens book */ - /* Search web for "get_ifi_info" to get original code */ - for ( ; ; ) { - - buffer = malloc(length); - ifc->ifc_len = length; - ifc->ifc_buf = buffer; - - /* Read list */ - if (ioctl(sockfd, SIOCGIFCONF, ifc) < 0) { - error = errno; - TRACE_INFO_NUMBER("Ioctl call failed", error); - if (error != EINVAL || lastlen != 0) { - free(buffer); - TRACE_ERROR_NUMBER("ioctl failed", error); - return error; - } - } else { - TRACE_INFO_NUMBER("Length returned", ifc->ifc_len); - TRACE_INFO_NUMBER("Previous length", lastlen); - /* Break if length is same */ - if (ifc->ifc_len == lastlen) break; - lastlen = ifc->ifc_len; - } - - /* Grow length */ - length += INTERFACE_NUM_INC * sizeof(struct ifreq); - free(buffer); - } - - TRACE_FLOW_STRING("elapi_get_addrlist", "Exit"); - return EOK; -} - -/* Get the variable part of the size of the address */ -static int elapi_get_addrlen(struct ifreq *ifr) -{ - int len; - - TRACE_FLOW_STRING("elapi_get_addrlen", "Entry"); - -#ifdef HAVE_SOCKADDR_SA_LEN - len = max(sizeof(struct sockaddr), ifr->ifr_addr.sa_len); -#else - switch (ifr->ifr_addr.sa_family) { -#ifdef IPV6 - case AF_INET6: - len = sizeof(struct sockaddr_in6); - break; -#endif - case AF_INET: - default: - len = sizeof(struct sockaddr); - break; - } -#endif /* HAVE_SOCKADDR_SA_LEN */ - - TRACE_FLOW_NUMBER("elapi_get_addrlen Returning", len); - return len; -} - -/* Get next address */ -struct ifreq *elapi_get_next_addr(struct ifconf *ifc, struct ifreq *current) -{ - char *ifr; - - TRACE_FLOW_STRING("elapi_get_next_addr", "Entry"); - - TRACE_INFO_NUMBER("Current ifi", current); - TRACE_INFO_NUMBER("Address", ¤t->ifr_addr); - - /* Move to the next item */ - ifr = (char *)current + sizeof(current->ifr_name) + elapi_get_addrlen(current); - - TRACE_INFO_NUMBER("New ifi", ifr); - - /* Check if we are beyond the end of the allocated area */ - /* Have to cast otherwise get warnings */ - if (ifr >= ((char *)ifc->ifc_buf + ifc->ifc_len)) ifr = NULL; - - TRACE_INFO_NUMBER("New ifi adjusted", ifr); - - TRACE_FLOW_STRING("elapi_get_next_addr", "Exit"); - - return (struct ifreq *)ifr; -} - - -#endif /* HAVE_GETIFADDRS */ |