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[src/ROY]: src/external/bsd/dhcpcd/dist/src Update to dhcpcd-9.2.0 with the f...
details: https://anonhg.NetBSD.org/src/rev/e0887f0bbbcc
branches: ROY
changeset: 938321:e0887f0bbbcc
user: roy <roy%NetBSD.org@localhost>
date: Sun Sep 06 14:54:28 2020 +0000
description:
Update to dhcpcd-9.2.0 with the following changes:
* route: ensure IPv4LL routes come last in priority
* DHCP: fix many issues with extending the last lease
* privsep: don't read control group from config in privsep
* privsep: only the master process responds to signals
* privsep: use a socketpair for stderr/stdin rather than dupping /dev/null
* privsep: right limit stdin/stderr/stdout
* privsep: dumping a lease is now run in a sandbox
* options: check if kernel supports INET or INET6 before enabling default
* options: let clientid override a prior duid
* options: allow -1 to represent infinity for requested lease time
* dhcpcd: fix a crash initing a new interface after route overflow
diffstat:
external/bsd/dhcpcd/dist/src/defs.h | 2 +-
external/bsd/dhcpcd/dist/src/dhcp.c | 82 +++++++------
external/bsd/dhcpcd/dist/src/dhcpcd.8.in | 6 +-
external/bsd/dhcpcd/dist/src/dhcpcd.c | 150 +++++++++++++++++-------
external/bsd/dhcpcd/dist/src/dhcpcd.conf.5.in | 10 +-
external/bsd/dhcpcd/dist/src/dhcpcd.h | 6 +-
external/bsd/dhcpcd/dist/src/eloop.c | 5 +-
external/bsd/dhcpcd/dist/src/if-options.c | 51 +++++++-
external/bsd/dhcpcd/dist/src/if.c | 47 +++++++
external/bsd/dhcpcd/dist/src/if.h | 3 +-
external/bsd/dhcpcd/dist/src/ipv4.c | 9 +-
external/bsd/dhcpcd/dist/src/ipv4.h | 1 +
external/bsd/dhcpcd/dist/src/ipv4ll.c | 5 +
external/bsd/dhcpcd/dist/src/ipv6.c | 33 ++---
external/bsd/dhcpcd/dist/src/ipv6nd.c | 4 +-
external/bsd/dhcpcd/dist/src/logerr.c | 45 +------
external/bsd/dhcpcd/dist/src/logerr.h | 2 -
external/bsd/dhcpcd/dist/src/privsep-bpf.c | 14 +--
external/bsd/dhcpcd/dist/src/privsep-control.c | 25 +---
external/bsd/dhcpcd/dist/src/privsep-inet.c | 17 +--
external/bsd/dhcpcd/dist/src/privsep-root.c | 31 +++-
external/bsd/dhcpcd/dist/src/privsep.c | 60 +++++----
external/bsd/dhcpcd/dist/src/privsep.h | 1 -
external/bsd/dhcpcd/dist/src/route.c | 8 +
external/bsd/dhcpcd/dist/src/route.h | 5 +-
25 files changed, 368 insertions(+), 254 deletions(-)
diffs (truncated from 1333 to 300 lines):
diff -r 7392c18c0a1b -r e0887f0bbbcc external/bsd/dhcpcd/dist/src/defs.h
--- a/external/bsd/dhcpcd/dist/src/defs.h Wed Jul 22 13:18:01 2020 +0000
+++ b/external/bsd/dhcpcd/dist/src/defs.h Sun Sep 06 14:54:28 2020 +0000
@@ -29,7 +29,7 @@
#define CONFIG_H
#define PACKAGE "dhcpcd"
-#define VERSION "9.1.4"
+#define VERSION "9.2.0"
#ifndef PRIVSEP_USER
# define PRIVSEP_USER "_" PACKAGE
diff -r 7392c18c0a1b -r e0887f0bbbcc external/bsd/dhcpcd/dist/src/dhcp.c
--- a/external/bsd/dhcpcd/dist/src/dhcp.c Wed Jul 22 13:18:01 2020 +0000
+++ b/external/bsd/dhcpcd/dist/src/dhcp.c Sun Sep 06 14:54:28 2020 +0000
@@ -777,7 +777,7 @@
(type == DHCP_REQUEST &&
state->addr->mask.s_addr == lease->mask.s_addr &&
(state->new == NULL || IS_DHCP(state->new)) &&
- !(state->added & STATE_FAKE))))
+ !(state->added & (STATE_FAKE | STATE_EXPIRED)))))
bootp->ciaddr = state->addr->addr.s_addr;
bootp->op = BOOTREQUEST;
@@ -836,7 +836,7 @@
if (type == DHCP_DECLINE ||
(type == DHCP_REQUEST &&
(state->addr == NULL ||
- state->added & STATE_FAKE ||
+ state->added & (STATE_FAKE | STATE_EXPIRED) ||
lease->addr.s_addr != state->addr->addr.s_addr)))
{
putip = true;
@@ -1745,7 +1745,7 @@
goto fail;
len = (size_t)r;
- if (!(state->added & STATE_FAKE) &&
+ if (!(state->added & (STATE_FAKE | STATE_EXPIRED)) &&
state->addr != NULL &&
ipv4_iffindaddr(ifp, &state->lease.addr, NULL) != NULL)
from.s_addr = state->lease.addr.s_addr;
@@ -1869,14 +1869,16 @@
state->state = DHS_DISCOVER;
dhcp_new_xid(ifp);
eloop_timeout_delete(ifp->ctx->eloop, NULL, ifp);
- if (ifo->fallback)
- eloop_timeout_add_sec(ifp->ctx->eloop,
- ifo->reboot, dhcp_fallback, ifp);
+ if (!(state->added & STATE_EXPIRED)) {
+ if (ifo->fallback)
+ eloop_timeout_add_sec(ifp->ctx->eloop,
+ ifo->reboot, dhcp_fallback, ifp);
#ifdef IPV4LL
- else if (ifo->options & DHCPCD_IPV4LL)
- eloop_timeout_add_sec(ifp->ctx->eloop,
- ifo->reboot, ipv4ll_start, ifp);
+ else if (ifo->options & DHCPCD_IPV4LL)
+ eloop_timeout_add_sec(ifp->ctx->eloop,
+ ifo->reboot, ipv4ll_start, ifp);
#endif
+ }
if (ifo->options & DHCPCD_REQUEST)
loginfox("%s: soliciting a DHCP lease (requesting %s)",
ifp->name, inet_ntoa(ifo->req_addr));
@@ -1897,30 +1899,21 @@
}
static void
-dhcp_expire1(struct interface *ifp)
-{
- struct dhcp_state *state = D_STATE(ifp);
-
- eloop_timeout_delete(ifp->ctx->eloop, NULL, ifp);
- dhcp_drop(ifp, "EXPIRE");
- dhcp_unlink(ifp->ctx, state->leasefile);
- state->interval = 0;
- if (!(ifp->options->options & DHCPCD_LINK) || ifp->carrier > LINK_DOWN)
- dhcp_discover(ifp);
-}
-
-static void
dhcp_expire(void *arg)
{
struct interface *ifp = arg;
+ struct dhcp_state *state = D_STATE(ifp);
if (ifp->options->options & DHCPCD_LASTLEASE_EXTEND) {
logwarnx("%s: DHCP lease expired, extending lease", ifp->name);
- return;
+ state->added |= STATE_EXPIRED;
+ } else {
+ logerrx("%s: DHCP lease expired", ifp->name);
+ dhcp_drop(ifp, "EXPIRE");
+ dhcp_unlink(ifp->ctx, state->leasefile);
}
-
- logerrx("%s: DHCP lease expired", ifp->name);
- dhcp_expire1(ifp);
+ state->interval = 0;
+ dhcp_discover(ifp);
}
#if defined(ARP) || defined(IN_IFF_DUPLICATED)
@@ -2291,7 +2284,9 @@
return;
}
if (state->reason == NULL) {
- if (state->old && !(state->added & STATE_FAKE)) {
+ if (state->old &&
+ !(state->added & (STATE_FAKE | STATE_EXPIRED)))
+ {
if (state->old->yiaddr == state->new->yiaddr &&
lease->server.s_addr &&
state->state != DHS_REBIND)
@@ -2364,19 +2359,6 @@
eloop_event_add(ctx->eloop, state->udp_rfd, dhcp_handleifudp, ifp);
}
-static void
-dhcp_lastlease(void *arg)
-{
- struct interface *ifp = arg;
- struct dhcp_state *state = D_STATE(ifp);
-
- loginfox("%s: timed out contacting a DHCP server, using last lease",
- ifp->name);
- dhcp_bind(ifp);
- state->interval = 0;
- dhcp_discover(ifp);
-}
-
static size_t
dhcp_message_new(struct bootp **bootp,
const struct in_addr *addr, const struct in_addr *mask)
@@ -2476,6 +2458,26 @@
#endif
static void
+dhcp_lastlease(void *arg)
+{
+ struct interface *ifp = arg;
+ struct dhcp_state *state = D_STATE(ifp);
+
+ loginfox("%s: timed out contacting a DHCP server, using last lease",
+ ifp->name);
+#if defined(ARP) || defined(KERNEL_RFC5227)
+ dhcp_arp_bind(ifp);
+#else
+ dhcp_bind(ifp);
+#endif
+ /* Set expired here because dhcp_bind() -> ipv4_addaddr() will reset
+ * state */
+ state->added |= STATE_EXPIRED;
+ state->interval = 0;
+ dhcp_discover(ifp);
+}
+
+static void
dhcp_static(struct interface *ifp)
{
struct if_options *ifo;
diff -r 7392c18c0a1b -r e0887f0bbbcc external/bsd/dhcpcd/dist/src/dhcpcd.8.in
--- a/external/bsd/dhcpcd/dist/src/dhcpcd.8.in Wed Jul 22 13:18:01 2020 +0000
+++ b/external/bsd/dhcpcd/dist/src/dhcpcd.8.in Sun Sep 06 14:54:28 2020 +0000
@@ -24,7 +24,7 @@
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.Dd May 31, 2020
+.Dd September 2, 2020
.Dt DHCPCD 8
.Os
.Sh NAME
@@ -385,8 +385,10 @@
.Nm
will exit.
.It Fl l , Fl Fl leasetime Ar seconds
-Request a specific lease time in
+Request a lease time of
.Ar seconds .
+.Ar -1
+represents an infinite lease time.
By default
.Nm
does not request any lease time and leaves it in the hands of the
diff -r 7392c18c0a1b -r e0887f0bbbcc external/bsd/dhcpcd/dist/src/dhcpcd.c
--- a/external/bsd/dhcpcd/dist/src/dhcpcd.c Wed Jul 22 13:18:01 2020 +0000
+++ b/external/bsd/dhcpcd/dist/src/dhcpcd.c Sun Sep 06 14:54:28 2020 +0000
@@ -336,7 +336,7 @@
#ifdef THERE_IS_NO_FORK
eloop_timeout_delete(ctx->eloop, handle_exit_timeout, ctx);
errno = ENOSYS;
- return 0;
+ return;
#else
int i;
unsigned int logopts = loggetopts();
@@ -361,8 +361,8 @@
/* Don't use loginfo because this makes no sense in a log. */
if (!(logopts & LOGERR_QUIET))
- (void)fprintf(stderr, "forked to background, child pid %d\n",
- getpid());
+ (void)fprintf(stderr,
+ "forked to background, child pid %d\n", getpid());
i = EXIT_SUCCESS;
if (write(ctx->fork_fd, &i, sizeof(i)) == -1)
logerr("write");
@@ -371,11 +371,18 @@
close(ctx->fork_fd);
ctx->fork_fd = -1;
- if (isatty(loggeterrfd())) {
- logopts &= ~LOGERR_ERR;
- logsetopts(logopts);
- logseterrfd(-1);
- }
+ /*
+ * Stop writing to stderr.
+ * On the happy path, only the master process writes to stderr,
+ * so this just stops wasting fprintf calls to nowhere.
+ * All other calls - ie errors in privsep processes or script output,
+ * will error when printing.
+ * If we *really* want to fix that, then we need to suck
+ * stderr/stdout in the master process and either disacrd it or pass
+ * it to the launcher process and then to stderr.
+ */
+ logopts &= ~LOGERR_ERR;
+ logsetopts(logopts);
#endif
}
@@ -1153,6 +1160,15 @@
}
#endif
+static void
+dhcpcd_runprestartinterface(void *arg)
+{
+ struct interface *ifp = arg;
+
+ run_preinit(ifp);
+ dhcpcd_prestartinterface(ifp);
+}
+
void
dhcpcd_linkoverflow(struct dhcpcd_ctx *ctx)
{
@@ -1215,9 +1231,11 @@
continue;
}
TAILQ_INSERT_TAIL(ctx->ifaces, ifp, next);
- if (ifp->active)
+ if (ifp->active) {
+ dhcpcd_initstate(ifp, 0);
eloop_timeout_add_sec(ctx->eloop, 0,
- dhcpcd_prestartinterface, ifp);
+ dhcpcd_runprestartinterface, ifp);
+ }
}
free(ifaces);
@@ -1765,6 +1783,24 @@
eloop_exit(ctx->eloop, exit_code);
}
+static void
+dhcpcd_stderr_cb(void *arg)
+{
+ struct dhcpcd_ctx *ctx = arg;
+ char log[BUFSIZ];
+ ssize_t len;
+
+ len = read(ctx->stderr_fd, log, sizeof(log));
+ if (len == -1) {
+ if (errno != ECONNRESET)
+ logerr(__func__);
+ return;
+ }
+
+ log[len] = '\0';
+ fprintf(stderr, "%s", log);
+}
+
int
main(int argc, char **argv)
{
@@ -1778,7 +1814,7 @@
ssize_t len;
#if defined(USE_SIGNALS) || !defined(THERE_IS_NO_FORK)
pid_t pid;
- int sigpipe[2];
+ int fork_fd[2], stderr_fd[2];
#endif
#ifdef USE_SIGNALS
int sig = 0;
@@ -2100,11 +2136,20 @@
}
#endif
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