case "$OS" in
linux*)
echo "CPPFLAGS+= -D_BSD_SOURCE -D_XOPEN_SOURCE=700" >>$CONFIG_MK
- if [ -z "$INET" -o "$INET" = yes ]; then
- echo "DHCPCD_SRCS+= lpf.c" >>$CONFIG_MK
- fi
echo "DHCPCD_SRCS+= if-linux.c if-linux-wireless.c" >>$CONFIG_MK
- echo "DHCPCD_SRCS+= platform-linux.c" >>$CONFIG_MK
;;
kfreebsd*)
echo "CPPFLAGS+= -D_GNU_SOURCE" >>$CONFIG_MK
#include <sys/ioctl.h>
#include <sys/param.h>
+#include <linux/filter.h>
+#include <linux/if_packet.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
+#include <arpa/inet.h>
+#include <net/if.h>
+#include <netinet/in_systm.h>
+#include <netinet/in.h>
#include <net/route.h>
/* Support older kernels */
#endif
#include <errno.h>
+#include <fcntl.h>
#include <ctype.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <syslog.h>
+#include <time.h>
#include <unistd.h>
#include "config.h"
#include "ipv4.h"
#include "ipv6.h"
#include "net.h"
+#include "platform.h"
+
+#define bpf_insn sock_filter
+#define BPF_SKIPTYPE
+#define BPF_ETHCOOK -ETH_HLEN
+#define BPF_WHOLEPACKET 0x0fffffff /* work around buggy LPF filters */
+
+#include "config.h"
+#include "common.h"
+#include "dhcp.h"
+#include "ipv4.h"
+#include "bpf-filter.h"
+
+/* Broadcast address for IPoIB */
+static const uint8_t ipv4_bcast_addr[] = {
+ 0x00, 0xff, 0xff, 0xff,
+ 0xff, 0x12, 0x40, 0x1b, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff
+};
#define PROC_INET6 "/proc/net/if_inet6"
#define PROC_PROMOTE "/proc/sys/net/ipv4/conf/%s/promote_secondaries"
#define SYS_LAYER2 "/sys/class/net/%s/device/layer2"
+static const char *mproc =
+#if defined(__alpha__)
+ "system type"
+#elif defined(__arm__)
+ "Hardware"
+#elif defined(__avr32__)
+ "cpu family"
+#elif defined(__bfin__)
+ "BOARD Name"
+#elif defined(__cris__)
+ "cpu model"
+#elif defined(__frv__)
+ "System"
+#elif defined(__i386__) || defined(__x86_64__)
+ "vendor_id"
+#elif defined(__ia64__)
+ "vendor"
+#elif defined(__hppa__)
+ "model"
+#elif defined(__m68k__)
+ "MMU"
+#elif defined(__mips__)
+ "system type"
+#elif defined(__powerpc__) || defined(__powerpc64__)
+ "machine"
+#elif defined(__s390__) || defined(__s390x__)
+ "Manufacturer"
+#elif defined(__sh__)
+ "machine"
+#elif defined(sparc) || defined(__sparc__)
+ "cpu"
+#elif defined(__vax__)
+ "cpu"
+#else
+ NULL
+#endif
+ ;
+
+int
+hardware_platform(char *str, size_t len)
+{
+ FILE *fp;
+ char buf[256];
+
+ if (mproc == NULL) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ fp = fopen("/proc/cpuinfo", "r");
+ if (fp == NULL)
+ return -1;
+
+ while (fscanf(fp, "%255s : ", buf) != EOF) {
+ if (strncmp(buf, mproc, strlen(mproc)) == 0 &&
+ fscanf(fp, "%255s", buf) == 1)
+ {
+ fclose(fp);
+ return snprintf(str, len, ":%s", buf);
+ }
+ }
+ fclose(fp);
+ errno = ESRCH;
+ return -1;
+}
+
int
if_init(struct interface *ifp)
{
};
#ifdef INET
+int
+ipv4_opensocket(struct interface *ifp, int protocol)
+{
+ int s;
+ union sockunion {
+ struct sockaddr sa;
+ struct sockaddr_in sin;
+ struct sockaddr_ll sll;
+ struct sockaddr_storage ss;
+ } su;
+ struct sock_fprog pf;
+#ifdef PACKET_AUXDATA
+ int n;
+#endif
+
+ if ((s = socket(PF_PACKET, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
+ htons(protocol))) == -1)
+ return -1;
+
+ memset(&su, 0, sizeof(su));
+ su.sll.sll_family = PF_PACKET;
+ su.sll.sll_protocol = htons(protocol);
+ su.sll.sll_ifindex = (int)ifp->index;
+ /* Install the DHCP filter */
+ memset(&pf, 0, sizeof(pf));
+ if (protocol == ETHERTYPE_ARP) {
+ pf.filter = UNCONST(arp_bpf_filter);
+ pf.len = arp_bpf_filter_len;
+ } else {
+ pf.filter = UNCONST(dhcp_bpf_filter);
+ pf.len = dhcp_bpf_filter_len;
+ }
+ if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER, &pf, sizeof(pf)) != 0)
+ goto eexit;
+#ifdef PACKET_AUXDATA
+ n = 1;
+ if (setsockopt(s, SOL_PACKET, PACKET_AUXDATA, &n, sizeof(n)) != 0) {
+ if (errno != ENOPROTOOPT)
+ goto eexit;
+ }
+#endif
+ if (bind(s, &su.sa, sizeof(su)) == -1)
+ goto eexit;
+ return s;
+
+eexit:
+ close(s);
+ return -1;
+}
+
+ssize_t
+ipv4_sendrawpacket(const struct interface *ifp, int protocol,
+ const void *data, size_t len)
+{
+ const struct dhcp_state *state;
+ union sockunion {
+ struct sockaddr sa;
+ struct sockaddr_ll sll;
+ struct sockaddr_storage ss;
+ } su;
+ int fd;
+
+ memset(&su, 0, sizeof(su));
+ su.sll.sll_family = AF_PACKET;
+ su.sll.sll_protocol = htons(protocol);
+ su.sll.sll_ifindex = (int)ifp->index;
+ su.sll.sll_hatype = htons(ifp->family);
+ su.sll.sll_halen = (unsigned char)ifp->hwlen;
+ if (ifp->family == ARPHRD_INFINIBAND)
+ memcpy(&su.sll.sll_addr,
+ &ipv4_bcast_addr, sizeof(ipv4_bcast_addr));
+ else
+ memset(&su.sll.sll_addr, 0xff, ifp->hwlen);
+ state = D_CSTATE(ifp);
+ if (protocol == ETHERTYPE_ARP)
+ fd = state->arp_fd;
+ else
+ fd = state->raw_fd;
+
+ return sendto(fd, data, len, 0, &su.sa, sizeof(su));
+}
+
+ssize_t
+ipv4_getrawpacket(struct interface *ifp, int protocol,
+ void *data, size_t len, int *partialcsum)
+{
+ struct iovec iov = {
+ .iov_base = data,
+ .iov_len = len,
+ };
+ struct msghdr msg = {
+ .msg_iov = &iov,
+ .msg_iovlen = 1,
+ };
+ struct dhcp_state *state;
+#ifdef PACKET_AUXDATA
+ unsigned char cmsgbuf[CMSG_LEN(sizeof(struct tpacket_auxdata))];
+ struct cmsghdr *cmsg;
+ struct tpacket_auxdata *aux;
+#endif
+
+ ssize_t bytes;
+ int fd = -1;
+
+#ifdef PACKET_AUXDATA
+ msg.msg_control = cmsgbuf;
+ msg.msg_controllen = sizeof(cmsgbuf);
+#endif
+
+ state = D_STATE(ifp);
+ if (protocol == ETHERTYPE_ARP)
+ fd = state->arp_fd;
+ else
+ fd = state->raw_fd;
+ bytes = recvmsg(fd, &msg, 0);
+ if (bytes == -1)
+ return errno == EAGAIN ? 0 : -1;
+ if (partialcsum != NULL) {
+ *partialcsum = 0;
+#ifdef PACKET_AUXDATA
+ for (cmsg = CMSG_FIRSTHDR(&msg);
+ cmsg;
+ cmsg = CMSG_NXTHDR(&msg, cmsg))
+ {
+ if (cmsg->cmsg_level == SOL_PACKET &&
+ cmsg->cmsg_type == PACKET_AUXDATA) {
+ aux = (void *)CMSG_DATA(cmsg);
+ *partialcsum = aux->tp_status &
+ TP_STATUS_CSUMNOTREADY;
+ }
+ }
+#endif
+ }
+ return bytes;
+}
+
int
if_address(const struct interface *iface,
const struct in_addr *address, const struct in_addr *netmask,
errno = ESRCH;
return -1;
}
+
+static int
+check_proc_int(const char *path)
+{
+ FILE *fp;
+ int i;
+
+ fp = fopen(path, "r");
+ if (fp == NULL)
+ return -1;
+ if (fscanf(fp, "%d", &i) != 1)
+ i = -1;
+ fclose(fp);
+ return i;
+}
+
+static ssize_t
+write_path(const char *path, const char *val)
+{
+ FILE *fp;
+ ssize_t r;
+
+ fp = fopen(path, "w");
+ if (fp == NULL)
+ return -1;
+ r = fprintf(fp, "%s\n", val);
+ fclose(fp);
+ return r;
+}
+
+static const char *prefix = "/proc/sys/net/ipv6/conf";
+
+void
+restore_kernel_ra(struct dhcpcd_ctx *ctx)
+{
+ char path[256];
+
+ for (; ctx->ra_restore_len > 0; ctx->ra_restore_len--) {
+ if (!(ctx->options & DHCPCD_FORKED)) {
+ syslog(LOG_INFO, "%s: restoring kernel IPv6 RA support",
+ ctx->ra_restore[ctx->ra_restore_len - 1]);
+ snprintf(path, sizeof(path), "%s/%s/accept_ra",
+ prefix, ctx->ra_restore[ctx->ra_restore_len - 1]);
+ if (write_path(path, "1") == -1 && errno != ENOENT)
+ syslog(LOG_ERR, "write_path: %s: %m", path);
+ }
+ free(ctx->ra_restore[ctx->ra_restore_len - 1]);
+ }
+ free(ctx->ra_restore);
+ ctx->ra_restore = NULL;
+}
+
+int
+check_ipv6(struct dhcpcd_ctx *ctx, const char *ifname, int own)
+{
+ int ra;
+ size_t i;
+ char path[256], *p, **nrest;
+
+ if (ifname == NULL)
+ ifname = "all";
+
+ snprintf(path, sizeof(path), "%s/%s/autoconf", prefix, ifname);
+ ra = check_proc_int(path);
+ if (ra != 1) {
+ syslog(LOG_WARNING, "%s: IPv6 kernel autoconf disabled",
+ ifname);
+ return -1;
+ }
+
+ snprintf(path, sizeof(path), "%s/%s/accept_ra", prefix, ifname);
+ ra = check_proc_int(path);
+ if (ra == -1)
+ /* The sysctl probably doesn't exist, but this isn't an
+ * error as such so just log it and continue */
+ syslog(errno == ENOENT ? LOG_DEBUG : LOG_WARNING,
+ "%s: %m", path);
+ else if (ra != 0 && own) {
+ syslog(LOG_INFO, "%s: disabling kernel IPv6 RA support",
+ ifname);
+ if (write_path(path, "0") == -1) {
+ syslog(LOG_ERR, "write_path: %s: %m", path);
+ return ra;
+ }
+ for (i = 0; i < ctx->ra_restore_len; i++)
+ if (strcmp(ctx->ra_restore[i], ifname) == 0)
+ break;
+ if (i == ctx->ra_restore_len) {
+ p = strdup(ifname);
+ if (p == NULL) {
+ syslog(LOG_ERR, "%s: %m", __func__);
+ return 0;
+ }
+ nrest = realloc(ctx->ra_restore,
+ (ctx->ra_restore_len + 1) * sizeof(char *));
+ if (nrest == NULL) {
+ syslog(LOG_ERR, "%s: %m", __func__);
+ free(p);
+ return 0;
+ }
+ ctx->ra_restore = nrest;
+ ctx->ra_restore[ctx->ra_restore_len++] = p;
+ }
+ return 0;
+ }
+
+ return ra;
+}
+
+int
+ipv6_dadtransmits(const char *ifname)
+{
+ char path[256];
+ int r;
+
+ if (ifname == NULL)
+ ifname = "default";
+
+ snprintf(path, sizeof(path), "%s/%s/dad_transmits", prefix, ifname);
+ r = check_proc_int(path);
+ return r < 0 ? 0 : r;
+}
#endif
+++ /dev/null
-/*
- * dhcpcd - DHCP client daemon
- * Copyright (c) 2006-2013 Roy Marples <roy@marples.name>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <sys/socket.h>
-
-#include <net/if.h>
-#include <netinet/in_systm.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-
-#ifdef __linux__
-# include <asm/types.h> /* needed for 2.4 kernels for the below header */
-# include <linux/filter.h>
-# include <linux/if_packet.h>
-# define bpf_insn sock_filter
-# define BPF_SKIPTYPE
-# define BPF_ETHCOOK -ETH_HLEN
-# define BPF_WHOLEPACKET 0x0fffffff /* work around buggy LPF filters */
-#endif
-
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
-
-#include "config.h"
-#include "common.h"
-#include "dhcp.h"
-#include "ipv4.h"
-#include "bpf-filter.h"
-
-/* Broadcast address for IPoIB */
-static const uint8_t ipv4_bcast_addr[] = {
- 0x00, 0xff, 0xff, 0xff,
- 0xff, 0x12, 0x40, 0x1b, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff
-};
-
-#ifdef INET
-int
-ipv4_opensocket(struct interface *ifp, int protocol)
-{
- int s;
- union sockunion {
- struct sockaddr sa;
- struct sockaddr_in sin;
- struct sockaddr_ll sll;
- struct sockaddr_storage ss;
- } su;
- struct sock_fprog pf;
-#ifdef PACKET_AUXDATA
- int n;
-#endif
-
- if ((s = socket(PF_PACKET, SOCK_DGRAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
- htons(protocol))) == -1)
- return -1;
-
- memset(&su, 0, sizeof(su));
- su.sll.sll_family = PF_PACKET;
- su.sll.sll_protocol = htons(protocol);
- su.sll.sll_ifindex = (int)ifp->index;
- /* Install the DHCP filter */
- memset(&pf, 0, sizeof(pf));
- if (protocol == ETHERTYPE_ARP) {
- pf.filter = UNCONST(arp_bpf_filter);
- pf.len = arp_bpf_filter_len;
- } else {
- pf.filter = UNCONST(dhcp_bpf_filter);
- pf.len = dhcp_bpf_filter_len;
- }
- if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER, &pf, sizeof(pf)) != 0)
- goto eexit;
-#ifdef PACKET_AUXDATA
- n = 1;
- if (setsockopt(s, SOL_PACKET, PACKET_AUXDATA, &n, sizeof(n)) != 0) {
- if (errno != ENOPROTOOPT)
- goto eexit;
- }
-#endif
- if (bind(s, &su.sa, sizeof(su)) == -1)
- goto eexit;
- return s;
-
-eexit:
- close(s);
- return -1;
-}
-
-ssize_t
-ipv4_sendrawpacket(const struct interface *ifp, int protocol,
- const void *data, size_t len)
-{
- const struct dhcp_state *state;
- union sockunion {
- struct sockaddr sa;
- struct sockaddr_ll sll;
- struct sockaddr_storage ss;
- } su;
- int fd;
-
- memset(&su, 0, sizeof(su));
- su.sll.sll_family = AF_PACKET;
- su.sll.sll_protocol = htons(protocol);
- su.sll.sll_ifindex = (int)ifp->index;
- su.sll.sll_hatype = htons(ifp->family);
- su.sll.sll_halen = (unsigned char)ifp->hwlen;
- if (ifp->family == ARPHRD_INFINIBAND)
- memcpy(&su.sll.sll_addr,
- &ipv4_bcast_addr, sizeof(ipv4_bcast_addr));
- else
- memset(&su.sll.sll_addr, 0xff, ifp->hwlen);
- state = D_CSTATE(ifp);
- if (protocol == ETHERTYPE_ARP)
- fd = state->arp_fd;
- else
- fd = state->raw_fd;
-
- return sendto(fd, data, len, 0, &su.sa, sizeof(su));
-}
-
-ssize_t
-ipv4_getrawpacket(struct interface *ifp, int protocol,
- void *data, size_t len, int *partialcsum)
-{
- struct iovec iov = {
- .iov_base = data,
- .iov_len = len,
- };
- struct msghdr msg = {
- .msg_iov = &iov,
- .msg_iovlen = 1,
- };
- struct dhcp_state *state;
-#ifdef PACKET_AUXDATA
- unsigned char cmsgbuf[CMSG_LEN(sizeof(struct tpacket_auxdata))];
- struct cmsghdr *cmsg;
- struct tpacket_auxdata *aux;
-#endif
-
- ssize_t bytes;
- int fd = -1;
-
-#ifdef PACKET_AUXDATA
- msg.msg_control = cmsgbuf;
- msg.msg_controllen = sizeof(cmsgbuf);
-#endif
-
- state = D_STATE(ifp);
- if (protocol == ETHERTYPE_ARP)
- fd = state->arp_fd;
- else
- fd = state->raw_fd;
- bytes = recvmsg(fd, &msg, 0);
- if (bytes == -1)
- return errno == EAGAIN ? 0 : -1;
- if (partialcsum != NULL) {
- *partialcsum = 0;
-#ifdef PACKET_AUXDATA
- for (cmsg = CMSG_FIRSTHDR(&msg);
- cmsg;
- cmsg = CMSG_NXTHDR(&msg, cmsg))
- {
- if (cmsg->cmsg_level == SOL_PACKET &&
- cmsg->cmsg_type == PACKET_AUXDATA) {
- aux = (void *)CMSG_DATA(cmsg);
- *partialcsum = aux->tp_status &
- TP_STATUS_CSUMNOTREADY;
- }
- }
-#endif
- }
- return bytes;
-}
-#endif
+++ /dev/null
-/*
- * dhcpcd - DHCP client daemon
- * Copyright (c) 2006-2014 Roy Marples <roy@marples.name>
- * All rights reserved
-
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <syslog.h>
-
-#include "common.h"
-#include "dhcpcd.h"
-#include "if-options.h"
-#include "platform.h"
-
-static const char *mproc =
-#if defined(__alpha__)
- "system type"
-#elif defined(__arm__)
- "Hardware"
-#elif defined(__avr32__)
- "cpu family"
-#elif defined(__bfin__)
- "BOARD Name"
-#elif defined(__cris__)
- "cpu model"
-#elif defined(__frv__)
- "System"
-#elif defined(__i386__) || defined(__x86_64__)
- "vendor_id"
-#elif defined(__ia64__)
- "vendor"
-#elif defined(__hppa__)
- "model"
-#elif defined(__m68k__)
- "MMU"
-#elif defined(__mips__)
- "system type"
-#elif defined(__powerpc__) || defined(__powerpc64__)
- "machine"
-#elif defined(__s390__) || defined(__s390x__)
- "Manufacturer"
-#elif defined(__sh__)
- "machine"
-#elif defined(sparc) || defined(__sparc__)
- "cpu"
-#elif defined(__vax__)
- "cpu"
-#else
- NULL
-#endif
- ;
-
-int
-hardware_platform(char *str, size_t len)
-{
- FILE *fp;
- char buf[256];
-
- if (mproc == NULL) {
- errno = EINVAL;
- return -1;
- }
-
- fp = fopen("/proc/cpuinfo", "r");
- if (fp == NULL)
- return -1;
-
- while (fscanf(fp, "%255s : ", buf) != EOF) {
- if (strncmp(buf, mproc, strlen(mproc)) == 0 &&
- fscanf(fp, "%255s", buf) == 1)
- {
- fclose(fp);
- return snprintf(str, len, ":%s", buf);
- }
- }
- fclose(fp);
- errno = ESRCH;
- return -1;
-}
-
-#ifdef INET6
-static int
-check_proc_int(const char *path)
-{
- FILE *fp;
- int i;
-
- fp = fopen(path, "r");
- if (fp == NULL)
- return -1;
- if (fscanf(fp, "%d", &i) != 1)
- i = -1;
- fclose(fp);
- return i;
-}
-
-static ssize_t
-write_path(const char *path, const char *val)
-{
- FILE *fp;
- ssize_t r;
-
- fp = fopen(path, "w");
- if (fp == NULL)
- return -1;
- r = fprintf(fp, "%s\n", val);
- fclose(fp);
- return r;
-}
-
-static const char *prefix = "/proc/sys/net/ipv6/conf";
-
-void
-restore_kernel_ra(struct dhcpcd_ctx *ctx)
-{
- char path[256];
-
- for (; ctx->ra_restore_len > 0; ctx->ra_restore_len--) {
- if (!(ctx->options & DHCPCD_FORKED)) {
- syslog(LOG_INFO, "%s: restoring kernel IPv6 RA support",
- ctx->ra_restore[ctx->ra_restore_len - 1]);
- snprintf(path, sizeof(path), "%s/%s/accept_ra",
- prefix, ctx->ra_restore[ctx->ra_restore_len - 1]);
- if (write_path(path, "1") == -1 && errno != ENOENT)
- syslog(LOG_ERR, "write_path: %s: %m", path);
- }
- free(ctx->ra_restore[ctx->ra_restore_len - 1]);
- }
- free(ctx->ra_restore);
- ctx->ra_restore = NULL;
-}
-
-int
-check_ipv6(struct dhcpcd_ctx *ctx, const char *ifname, int own)
-{
- int ra;
- size_t i;
- char path[256], *p, **nrest;
-
- if (ifname == NULL)
- ifname = "all";
-
- snprintf(path, sizeof(path), "%s/%s/autoconf", prefix, ifname);
- ra = check_proc_int(path);
- if (ra != 1) {
- syslog(LOG_WARNING, "%s: IPv6 kernel autoconf disabled",
- ifname);
- return -1;
- }
-
- snprintf(path, sizeof(path), "%s/%s/accept_ra", prefix, ifname);
- ra = check_proc_int(path);
- if (ra == -1)
- /* The sysctl probably doesn't exist, but this isn't an
- * error as such so just log it and continue */
- syslog(errno == ENOENT ? LOG_DEBUG : LOG_WARNING,
- "%s: %m", path);
- else if (ra != 0 && own) {
- syslog(LOG_INFO, "%s: disabling kernel IPv6 RA support",
- ifname);
- if (write_path(path, "0") == -1) {
- syslog(LOG_ERR, "write_path: %s: %m", path);
- return ra;
- }
- for (i = 0; i < ctx->ra_restore_len; i++)
- if (strcmp(ctx->ra_restore[i], ifname) == 0)
- break;
- if (i == ctx->ra_restore_len) {
- p = strdup(ifname);
- if (p == NULL) {
- syslog(LOG_ERR, "%s: %m", __func__);
- return 0;
- }
- nrest = realloc(ctx->ra_restore,
- (ctx->ra_restore_len + 1) * sizeof(char *));
- if (nrest == NULL) {
- syslog(LOG_ERR, "%s: %m", __func__);
- free(p);
- return 0;
- }
- ctx->ra_restore = nrest;
- ctx->ra_restore[ctx->ra_restore_len++] = p;
- }
- return 0;
- }
-
- return ra;
-}
-
-int
-ipv6_dadtransmits(const char *ifname)
-{
- char path[256];
- int r;
-
- if (ifname == NULL)
- ifname = "default";
-
- snprintf(path, sizeof(path), "%s/%s/dad_transmits", prefix, ifname);
- r = check_proc_int(path);
- return r < 0 ? 0 : r;
-}
-#endif
projects / thirdparty / dhcpcd.git / commitdiff
