#include <fcntl.h>
#include <sys/epoll.h>
#include <signal.h>
+#include <arpa/inet.h>
#include "unit.h"
#include "socket.h"
#include "log.h"
#include "load-dropin.h"
#include "load-fragment.h"
+#include "strv.h"
+#include "unit-name.h"
static const UnitActiveState state_translation_table[_SOCKET_STATE_MAX] = {
[SOCKET_DEAD] = UNIT_INACTIVE,
assert(u);
assert(u->meta.load_state == UNIT_STUB);
- s->state = 0;
s->timer_watch.type = WATCH_INVALID;
- s->bind_ipv6_only = false;
s->backlog = SOMAXCONN;
s->timeout_usec = DEFAULT_TIMEOUT_USEC;
s->directory_mode = 0755;
s->socket_mode = 0666;
- s->kill_mode = 0;
- s->failure = false;
- s->control_pid = 0;
- s->service = NULL;
+
exec_context_init(&s->exec_context);
}
+static bool have_non_accept_socket(Socket *s) {
+ SocketPort *p;
+
+ assert(s);
+
+ if (!s->accept)
+ return true;
+
+ LIST_FOREACH(port, p, s->ports)
+ if (!socket_address_can_accept(&p->address))
+ return true;
+
+ return false;
+}
+
+static int socket_verify(Socket *s) {
+ assert(s);
+
+ if (UNIT(s)->meta.load_state != UNIT_LOADED)
+ return 0;
+
+ if (!s->ports) {
+ log_error("%s lacks Listen setting. Refusing.", UNIT(s)->meta.id);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
static int socket_load(Unit *u) {
Socket *s = SOCKET(u);
int r;
/* This is a new unit? Then let's add in some extras */
if (u->meta.load_state == UNIT_LOADED) {
- if ((r = unit_load_related_unit(u, ".service", (Unit**) &s->service)))
- return r;
+ if (have_non_accept_socket(s)) {
+ if ((r = unit_load_related_unit(u, ".service", (Unit**) &s->service)))
+ return r;
- if ((r = unit_add_dependency(u, UNIT_BEFORE, UNIT(s->service))) < 0)
- return r;
+ if ((r = unit_add_dependency(u, UNIT_BEFORE, UNIT(s->service))) < 0)
+ return r;
+ }
if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
return r;
return r;
}
- return 0;
+ return socket_verify(s);
}
static const char* listen_lookup(int type) {
"%sBindToDevice: %s\n",
prefix, s->bind_to_device);
+ if (s->accept)
+ fprintf(f,
+ "%sAccepted: %u\n",
+ prefix, s->n_accepted);
+
LIST_FOREACH(port, p, s->ports) {
if (p->type == SOCKET_SOCKET) {
free(p2);
}
+static int instance_from_socket(int fd, unsigned nr, char **instance) {
+ socklen_t l;
+ char *r;
+ union {
+ struct sockaddr sa;
+ struct sockaddr_un un;
+ struct sockaddr_in in;
+ struct sockaddr_in6 in6;
+ struct sockaddr_storage storage;
+ } local, remote;
+
+ assert(fd >= 0);
+ assert(instance);
+
+ l = sizeof(local);
+ if (getsockname(fd, &local.sa, &l) < 0)
+ return -errno;
+
+ l = sizeof(remote);
+ if (getpeername(fd, &remote.sa, &l) < 0)
+ return -errno;
+
+ switch (local.sa.sa_family) {
+
+ case AF_INET: {
+ uint32_t
+ a = ntohl(local.in.sin_addr.s_addr),
+ b = ntohl(remote.in.sin_addr.s_addr);
+
+ if (asprintf(&r,
+ "%u-%u.%u.%u.%u-%u-%u.%u.%u.%u-%u",
+ nr,
+ a >> 24, (a >> 16) & 0xFF, (a >> 8) & 0xFF, a & 0xFF,
+ ntohs(local.in.sin_port),
+ b >> 24, (b >> 16) & 0xFF, (b >> 8) & 0xFF, b & 0xFF,
+ ntohs(remote.in.sin_port)) < 0)
+ return -ENOMEM;
+
+ break;
+ }
+
+ case AF_INET6: {
+ char a[INET6_ADDRSTRLEN], b[INET6_ADDRSTRLEN];
+
+ if (asprintf(&r,
+ "%u-%s-%u-%s-%u",
+ nr,
+ inet_ntop(AF_INET6, &local.in6.sin6_addr, a, sizeof(a)),
+ ntohs(local.in6.sin6_port),
+ inet_ntop(AF_INET6, &remote.in6.sin6_addr, b, sizeof(b)),
+ ntohs(remote.in6.sin6_port)) < 0)
+ return -ENOMEM;
+
+ break;
+ }
+
+ case AF_UNIX: {
+ struct ucred ucred;
+
+ l = sizeof(ucred);
+ if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0)
+ return -errno;
+
+ if (asprintf(&r,
+ "%u-%llu-%llu",
+ nr,
+ (unsigned long long) ucred.pid,
+ (unsigned long long) ucred.uid) < 0)
+ return -ENOMEM;
+
+ break;
+ }
+
+ default:
+ assert_not_reached("Unhandled socket type.");
+ }
+
+ *instance = r;
+ return 0;
+}
+
static void socket_close_fds(Socket *s) {
SocketPort *p;
if (p->fd < 0)
continue;
+ p->fd_watch.data.socket_accept =
+ s->accept &&
+ socket_address_can_accept(&p->address);
+
if ((r = unit_watch_fd(UNIT(s), p->fd, EPOLLIN, &p->fd_watch)) < 0)
goto fail;
}
socket_unwatch_fds(s);
if (state != old_state)
- log_debug("%s changed %s → %s", unit_id(UNIT(s)), state_string_table[old_state], state_string_table[state]);
+ log_debug("%s changed %s → %s", s->meta.id, state_string_table[old_state], state_string_table[state]);
unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
}
static int socket_spawn(Socket *s, ExecCommand *c, pid_t *_pid) {
pid_t pid;
int r;
+ char **argv;
assert(s);
assert(c);
if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
goto fail;
- if ((r = exec_spawn(c,
- &s->exec_context,
- NULL, 0,
- true,
- true,
- UNIT(s)->meta.manager->confirm_spawn,
- UNIT(s)->meta.cgroup_bondings,
- &pid)) < 0)
+ if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ r = exec_spawn(c,
+ argv,
+ &s->exec_context,
+ NULL, 0,
+ true,
+ true,
+ UNIT(s)->meta.manager->confirm_spawn,
+ UNIT(s)->meta.cgroup_bondings,
+ &pid);
+
+ strv_free(argv);
+ if (r < 0)
goto fail;
if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
return;
fail:
- log_warning("%s failed to run stop-post executable: %s", unit_id(UNIT(s)), strerror(-r));
+ log_warning("%s failed to run stop-post executable: %s", s->meta.id, strerror(-r));
socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
}
return;
fail:
- log_warning("%s failed to kill processes: %s", unit_id(UNIT(s)), strerror(-r));
+ log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL)
socket_enter_stop_post(s, false);
return;
fail:
- log_warning("%s failed to run stop-pre executable: %s", unit_id(UNIT(s)), strerror(-r));
+ log_warning("%s failed to run stop-pre executable: %s", s->meta.id, strerror(-r));
socket_enter_stop_post(s, false);
}
assert(s);
if ((r = socket_watch_fds(s)) < 0) {
- log_warning("%s failed to watch sockets: %s", unit_id(UNIT(s)), strerror(-r));
+ log_warning("%s failed to watch sockets: %s", s->meta.id, strerror(-r));
goto fail;
}
assert(s);
if ((r = socket_open_fds(s)) < 0) {
- log_warning("%s failed to listen on sockets: %s", unit_id(UNIT(s)), strerror(-r));
+ log_warning("%s failed to listen on sockets: %s", s->meta.id, strerror(-r));
goto fail;
}
if ((s->control_command = s->exec_command[SOCKET_EXEC_START_POST])) {
if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) {
- log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s)), strerror(-r));
+ log_warning("%s failed to run start-post executable: %s", s->meta.id, strerror(-r));
goto fail;
}
return;
fail:
- log_warning("%s failed to run start-pre exectuable: %s", unit_id(UNIT(s)), strerror(-r));
+ log_warning("%s failed to run start-pre exectuable: %s", s->meta.id, strerror(-r));
socket_enter_dead(s, false);
}
-static void socket_enter_running(Socket *s) {
+static void socket_enter_running(Socket *s, int cfd) {
int r;
assert(s);
- if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s->service), JOB_REPLACE, true, NULL)) < 0)
- goto fail;
+ if (cfd < 0) {
+ if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s->service), JOB_REPLACE, true, NULL)) < 0)
+ goto fail;
+
+ socket_set_state(s, SOCKET_RUNNING);
+ } else {
+ Unit *u;
+ char *prefix, *instance, *name;
+
+ if ((r = instance_from_socket(cfd, s->n_accepted++, &instance)))
+ goto fail;
+
+ if (!(prefix = unit_name_to_prefix(UNIT(s)->meta.id))) {
+ free(instance);
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ name = unit_name_build(prefix, instance, ".service");
+ free(prefix);
+ free(instance);
+
+ if (!name)
+ r = -ENOMEM;
+
+ r = manager_load_unit(UNIT(s)->meta.manager, name, NULL, &u);
+ free(name);
+
+ if (r < 0)
+ goto fail;
+
+ if ((r = service_set_socket_fd(SERVICE(u), cfd) < 0))
+ goto fail;
+
+ cfd = -1;
+
+ if ((r = manager_add_job(u->meta.manager, JOB_START, u, JOB_REPLACE, true, NULL)) < 0)
+ goto fail;
+ }
- socket_set_state(s, SOCKET_RUNNING);
return;
fail:
- log_warning("%s failed to queue socket startup job: %s", unit_id(UNIT(s)), strerror(-r));
+ log_warning("%s failed to queue socket startup job: %s", s->meta.id, strerror(-r));
socket_enter_stop_pre(s, false);
+
+ if (cfd >= 0)
+ close_nointr_nofail(cfd);
}
static void socket_run_next(Socket *s, bool success) {
return;
fail:
- log_warning("%s failed to run spawn next executable: %s", unit_id(UNIT(s)), strerror(-r));
+ log_warning("%s failed to run spawn next executable: %s", s->meta.id, strerror(-r));
if (s->state == SOCKET_START_POST)
socket_enter_stop_pre(s, false);
return 0;
/* Cannot run this without the service being around */
- if (s->service->meta.load_state != UNIT_LOADED)
- return -ENOENT;
-
- /* If the service is alredy actvie we cannot start the
- * socket */
- if (s->service->state != SERVICE_DEAD &&
- s->service->state != SERVICE_MAINTAINANCE &&
- s->service->state != SERVICE_AUTO_RESTART)
- return -EBUSY;
+ if (s->service) {
+ if (s->service->meta.load_state != UNIT_LOADED)
+ return -ENOENT;
+
+ /* If the service is alredy actvie we cannot start the
+ * socket */
+ if (s->service->state != SERVICE_DEAD &&
+ s->service->state != SERVICE_MAINTAINANCE &&
+ s->service->state != SERVICE_AUTO_RESTART)
+ return -EBUSY;
+ }
assert(s->state == SOCKET_DEAD || s->state == SOCKET_MAINTAINANCE);
static void socket_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
Socket *s = SOCKET(u);
+ int cfd = -1;
assert(s);
+ assert(fd >= 0);
- log_debug("Incoming traffic on %s", unit_id(u));
+ log_debug("Incoming traffic on %s", u->meta.id);
- if (events != EPOLLIN)
- socket_enter_stop_pre(s, false);
+ if (events != EPOLLIN) {
+ log_error("Got invalid poll event on socket.");
+ goto fail;
+ }
+
+ if (w->data.socket_accept) {
+ for (;;) {
+
+ if ((cfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK)) < 0) {
+
+ if (errno == EINTR)
+ continue;
- socket_enter_running(s);
+ log_error("Failed to accept socket: %m");
+ goto fail;
+ }
+
+ break;
+ }
+ }
+
+ socket_enter_running(s, cfd);
+ return;
+
+fail:
+ socket_enter_stop_pre(s, false);
}
static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) {
exec_status_fill(&s->control_command->exec_status, pid, code, status);
s->control_pid = 0;
- log_debug("%s control process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
+ log_debug("%s control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
if (s->control_command->command_next && success) {
- log_debug("%s running next command for state %s", unit_id(u), state_string_table[s->state]);
+ log_debug("%s running next command for state %s", u->meta.id, state_string_table[s->state]);
socket_run_next(s, success);
} else {
/* No further commands for this step, so let's figure
* out what to do next */
- log_debug("%s got final SIGCHLD for state %s", unit_id(u), state_string_table[s->state]);
+ log_debug("%s got final SIGCHLD for state %s", u->meta.id, state_string_table[s->state]);
switch (s->state) {
switch (s->state) {
case SOCKET_START_PRE:
- log_warning("%s starting timed out. Terminating.", unit_id(u));
+ log_warning("%s starting timed out. Terminating.", u->meta.id);
socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
case SOCKET_START_POST:
- log_warning("%s starting timed out. Stopping.", unit_id(u));
+ log_warning("%s starting timed out. Stopping.", u->meta.id);
socket_enter_stop_pre(s, false);
break;
case SOCKET_STOP_PRE:
- log_warning("%s stopping timed out. Terminating.", unit_id(u));
+ log_warning("%s stopping timed out. Terminating.", u->meta.id);
socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, false);
break;
case SOCKET_STOP_PRE_SIGTERM:
- log_warning("%s stopping timed out. Killing.", unit_id(u));
+ log_warning("%s stopping timed out. Killing.", u->meta.id);
socket_enter_signal(s, SOCKET_STOP_PRE_SIGKILL, false);
break;
case SOCKET_STOP_PRE_SIGKILL:
- log_warning("%s still around after SIGKILL. Ignoring.", unit_id(u));
+ log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
socket_enter_stop_post(s, false);
break;
case SOCKET_STOP_POST:
- log_warning("%s stopping timed out (2). Terminating.", unit_id(u));
+ log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
break;
case SOCKET_FINAL_SIGTERM:
- log_warning("%s stopping timed out (2). Killing.", unit_id(u));
+ log_warning("%s stopping timed out (2). Killing.", u->meta.id);
socket_enter_signal(s, SOCKET_FINAL_SIGKILL, false);
break;
case SOCKET_FINAL_SIGKILL:
- log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", unit_id(u));
+ log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", u->meta.id);
socket_enter_dead(s, false);
break;
/* The service is dead. Dang. */
if (s->state == SOCKET_RUNNING) {
- log_debug("%s got notified about service death.", unit_id(UNIT(s)));
+ log_debug("%s got notified about service death.", s->meta.id);
socket_enter_listening(s);
}
}
~ianmdlvl / elogind.git / blobdiff