+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <sys/stat.h>
-#include <unistd.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <sys/epoll.h>
-#include <signal.h>
-#include <arpa/inet.h>
-#include <netinet/tcp.h>
-#include <mqueue.h>
-
-#include "sd-event.h"
-#include "log.h"
-#include "strv.h"
-#include "mkdir.h"
-#include "path-util.h"
-#include "unit-name.h"
-#include "unit-printf.h"
-#include "missing.h"
-#include "special.h"
-#include "label.h"
-#include "exit-status.h"
-#include "def.h"
-#include "smack-util.h"
-#include "bus-util.h"
-#include "bus-error.h"
-#include "selinux-util.h"
-#include "dbus-socket.h"
-#include "unit.h"
-#include "socket.h"
-
-static const UnitActiveState state_translation_table[_SOCKET_STATE_MAX] = {
- [SOCKET_DEAD] = UNIT_INACTIVE,
- [SOCKET_START_PRE] = UNIT_ACTIVATING,
- [SOCKET_START_CHOWN] = UNIT_ACTIVATING,
- [SOCKET_START_POST] = UNIT_ACTIVATING,
- [SOCKET_LISTENING] = UNIT_ACTIVE,
- [SOCKET_RUNNING] = UNIT_ACTIVE,
- [SOCKET_STOP_PRE] = UNIT_DEACTIVATING,
- [SOCKET_STOP_PRE_SIGTERM] = UNIT_DEACTIVATING,
- [SOCKET_STOP_PRE_SIGKILL] = UNIT_DEACTIVATING,
- [SOCKET_STOP_POST] = UNIT_DEACTIVATING,
- [SOCKET_FINAL_SIGTERM] = UNIT_DEACTIVATING,
- [SOCKET_FINAL_SIGKILL] = UNIT_DEACTIVATING,
- [SOCKET_FAILED] = UNIT_FAILED
-};
-
-static int socket_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata);
-static int socket_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata);
-
-static void socket_init(Unit *u) {
- Socket *s = SOCKET(u);
-
- assert(u);
- assert(u->load_state == UNIT_STUB);
-
- s->backlog = SOMAXCONN;
- s->timeout_usec = u->manager->default_timeout_start_usec;
- s->directory_mode = 0755;
- s->socket_mode = 0666;
-
- s->max_connections = 64;
-
- s->priority = -1;
- s->ip_tos = -1;
- s->ip_ttl = -1;
- s->mark = -1;
-
- s->exec_context.std_output = u->manager->default_std_output;
- s->exec_context.std_error = u->manager->default_std_error;
-
- s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID;
-}
-
-static void socket_unwatch_control_pid(Socket *s) {
- assert(s);
-
- if (s->control_pid <= 0)
- return;
-
- unit_unwatch_pid(UNIT(s), s->control_pid);
- s->control_pid = 0;
-}
-
-void socket_free_ports(Socket *s) {
- SocketPort *p;
-
- assert(s);
-
- while ((p = s->ports)) {
- LIST_REMOVE(port, s->ports, p);
-
- sd_event_source_unref(p->event_source);
-
- safe_close(p->fd);
- free(p->path);
- free(p);
- }
-}
-
-static void socket_done(Unit *u) {
- Socket *s = SOCKET(u);
-
- assert(s);
-
- socket_free_ports(s);
-
- s->exec_runtime = exec_runtime_unref(s->exec_runtime);
- exec_command_free_array(s->exec_command, _SOCKET_EXEC_COMMAND_MAX);
- s->control_command = NULL;
-
- socket_unwatch_control_pid(s);
-
- unit_ref_unset(&s->service);
-
- free(s->tcp_congestion);
- s->tcp_congestion = NULL;
-
- free(s->bind_to_device);
- s->bind_to_device = NULL;
-
- free(s->smack);
- free(s->smack_ip_in);
- free(s->smack_ip_out);
-
- strv_free(s->symlinks);
-
- free(s->user);
- free(s->group);
-
- s->timer_event_source = sd_event_source_unref(s->timer_event_source);
-}
-
-static int socket_arm_timer(Socket *s) {
- int r;
-
- assert(s);
-
- if (s->timeout_usec <= 0) {
- s->timer_event_source = sd_event_source_unref(s->timer_event_source);
- return 0;
- }
-
- if (s->timer_event_source) {
- r = sd_event_source_set_time(s->timer_event_source, now(CLOCK_MONOTONIC) + s->timeout_usec);
- if (r < 0)
- return r;
-
- return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT);
- }
-
- return sd_event_add_time(
- UNIT(s)->manager->event,
- &s->timer_event_source,
- CLOCK_MONOTONIC,
- now(CLOCK_MONOTONIC) + s->timeout_usec, 0,
- socket_dispatch_timer, s);
-}
-
-int socket_instantiate_service(Socket *s) {
- _cleanup_free_ char *prefix = NULL, *name = NULL;
- int r;
- Unit *u;
-
- assert(s);
-
- /* This fills in s->service if it isn't filled in yet. For
- * Accept=yes sockets we create the next connection service
- * here. For Accept=no this is mostly a NOP since the service
- * is figured out at load time anyway. */
-
- if (UNIT_DEREF(s->service) || !s->accept)
- return 0;
-
- prefix = unit_name_to_prefix(UNIT(s)->id);
- if (!prefix)
- return -ENOMEM;
-
- if (asprintf(&name, "%s@%u.service", prefix, s->n_accepted) < 0)
- return -ENOMEM;
-
- r = manager_load_unit(UNIT(s)->manager, name, NULL, NULL, &u);
- if (r < 0)
- return r;
-
- u->no_gc = true;
- unit_ref_set(&s->service, u);
-
- return unit_add_two_dependencies(UNIT(s), UNIT_BEFORE, UNIT_TRIGGERS, u, false);
-}
-
-static bool have_non_accept_socket(Socket *s) {
- SocketPort *p;
-
- assert(s);
-
- if (!s->accept)
- return true;
-
- LIST_FOREACH(port, p, s->ports) {
-
- if (p->type != SOCKET_SOCKET)
- return true;
-
- if (!socket_address_can_accept(&p->address))
- return true;
- }
-
- return false;
-}
-
-static int socket_add_mount_links(Socket *s) {
- SocketPort *p;
- int r;
-
- assert(s);
-
- LIST_FOREACH(port, p, s->ports) {
- const char *path = NULL;
-
- if (p->type == SOCKET_SOCKET)
- path = socket_address_get_path(&p->address);
- else if (p->type == SOCKET_FIFO || p->type == SOCKET_SPECIAL)
- path = p->path;
-
- if (!path)
- continue;
-
- r = unit_require_mounts_for(UNIT(s), path);
- if (r < 0)
- return r;
- }
-
- return 0;
-}
-
-static int socket_add_device_link(Socket *s) {
- char *t;
-
- assert(s);
-
- if (!s->bind_to_device || streq(s->bind_to_device, "lo"))
- return 0;
-
- t = strjoina("/sys/subsystem/net/devices/", s->bind_to_device);
- return unit_add_node_link(UNIT(s), t, false);
-}
-
-static int socket_add_default_dependencies(Socket *s) {
- int r;
- assert(s);
-
- r = unit_add_dependency_by_name(UNIT(s), UNIT_BEFORE, SPECIAL_SOCKETS_TARGET, NULL, true);
- if (r < 0)
- return r;
-
- if (UNIT(s)->manager->running_as == SYSTEMD_SYSTEM) {
- r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true);
- if (r < 0)
- return r;
- }
-
- return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
-}
-
-_pure_ static bool socket_has_exec(Socket *s) {
- unsigned i;
- assert(s);
-
- for (i = 0; i < _SOCKET_EXEC_COMMAND_MAX; i++)
- if (s->exec_command[i])
- return true;
-
- return false;
-}
-
-static int socket_add_extras(Socket *s) {
- Unit *u = UNIT(s);
- int r;
-
- assert(s);
-
- if (have_non_accept_socket(s)) {
-
- if (!UNIT_DEREF(s->service)) {
- Unit *x;
-
- r = unit_load_related_unit(u, ".service", &x);
- if (r < 0)
- return r;
-
- unit_ref_set(&s->service, x);
- }
-
- r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, UNIT_DEREF(s->service), true);
- if (r < 0)
- return r;
- }
-
- r = socket_add_mount_links(s);
- if (r < 0)
- return r;
-
- r = socket_add_device_link(s);
- if (r < 0)
- return r;
-
- r = unit_patch_contexts(u);
- if (r < 0)
- return r;
-
- if (socket_has_exec(s)) {
- r = unit_add_exec_dependencies(u, &s->exec_context);
- if (r < 0)
- return r;
-
- r = unit_add_default_slice(u, &s->cgroup_context);
- if (r < 0)
- return r;
- }
-
- if (u->default_dependencies) {
- r = socket_add_default_dependencies(s);
- if (r < 0)
- return r;
- }
-
- return 0;
-}
-
-static const char *socket_find_symlink_target(Socket *s) {
- const char *found = NULL;
- SocketPort *p;
-
- LIST_FOREACH(port, p, s->ports) {
- const char *f = NULL;
-
- switch (p->type) {
-
- case SOCKET_FIFO:
- f = p->path;
- break;
-
- case SOCKET_SOCKET:
- if (p->address.sockaddr.un.sun_path[0] != 0)
- f = p->address.sockaddr.un.sun_path;
- break;
-
- default:
- break;
- }
-
- if (f) {
- if (found)
- return NULL;
-
- found = f;
- }
- }
-
- return found;
-}
-
-static int socket_verify(Socket *s) {
- assert(s);
-
- if (UNIT(s)->load_state != UNIT_LOADED)
- return 0;
-
- if (!s->ports) {
- log_unit_error(UNIT(s)->id, "%s lacks Listen setting. Refusing.", UNIT(s)->id);
- return -EINVAL;
- }
-
- if (s->accept && have_non_accept_socket(s)) {
- log_unit_error(UNIT(s)->id, "%s configured for accepting sockets, but sockets are non-accepting. Refusing.",
- UNIT(s)->id);
- return -EINVAL;
- }
-
- if (s->accept && s->max_connections <= 0) {
- log_unit_error(UNIT(s)->id, "%s's MaxConnection setting too small. Refusing.", UNIT(s)->id);
- return -EINVAL;
- }
-
- if (s->accept && UNIT_DEREF(s->service)) {
- log_unit_error(UNIT(s)->id, "Explicit service configuration for accepting sockets not supported on %s. Refusing.", UNIT(s)->id);
- return -EINVAL;
- }
-
- if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) {
- log_unit_error(UNIT(s)->id, "%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id);
- return -EINVAL;
- }
-
- if (!strv_isempty(s->symlinks) && !socket_find_symlink_target(s)) {
- log_unit_error(UNIT(s)->id, "%s has symlinks set but none or more than one node in the file system. Refusing.", UNIT(s)->id);
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int socket_load(Unit *u) {
- Socket *s = SOCKET(u);
- int r;
-
- assert(u);
- assert(u->load_state == UNIT_STUB);
-
- r = unit_load_fragment_and_dropin(u);
- if (r < 0)
- return r;
-
- if (u->load_state == UNIT_LOADED) {
- /* This is a new unit? Then let's add in some extras */
- r = socket_add_extras(s);
- if (r < 0)
- return r;
- }
-
- return socket_verify(s);
-}
-
-_const_ static const char* listen_lookup(int family, int type) {
-
- if (family == AF_NETLINK)
- return "ListenNetlink";
-
- if (type == SOCK_STREAM)
- return "ListenStream";
- else if (type == SOCK_DGRAM)
- return "ListenDatagram";
- else if (type == SOCK_SEQPACKET)
- return "ListenSequentialPacket";
-
- assert_not_reached("Unknown socket type");
- return NULL;
-}
-
-static void socket_dump(Unit *u, FILE *f, const char *prefix) {
- char time_string[FORMAT_TIMESPAN_MAX];
- SocketExecCommand c;
- Socket *s = SOCKET(u);
- SocketPort *p;
- const char *prefix2;
-
- assert(s);
- assert(f);
-
- prefix = strempty(prefix);
- prefix2 = strjoina(prefix, "\t");
-
- fprintf(f,
- "%sSocket State: %s\n"
- "%sResult: %s\n"
- "%sBindIPv6Only: %s\n"
- "%sBacklog: %u\n"
- "%sSocketMode: %04o\n"
- "%sDirectoryMode: %04o\n"
- "%sKeepAlive: %s\n"
- "%sNoDelay: %s\n"
- "%sFreeBind: %s\n"
- "%sTransparent: %s\n"
- "%sBroadcast: %s\n"
- "%sPassCredentials: %s\n"
- "%sPassSecurity: %s\n"
- "%sTCPCongestion: %s\n"
- "%sRemoveOnStop: %s\n"
- "%sSELinuxContextFromNet: %s\n",
- prefix, socket_state_to_string(s->state),
- prefix, socket_result_to_string(s->result),
- prefix, socket_address_bind_ipv6_only_to_string(s->bind_ipv6_only),
- prefix, s->backlog,
- prefix, s->socket_mode,
- prefix, s->directory_mode,
- prefix, yes_no(s->keep_alive),
- prefix, yes_no(s->no_delay),
- prefix, yes_no(s->free_bind),
- prefix, yes_no(s->transparent),
- prefix, yes_no(s->broadcast),
- prefix, yes_no(s->pass_cred),
- prefix, yes_no(s->pass_sec),
- prefix, strna(s->tcp_congestion),
- prefix, yes_no(s->remove_on_stop),
- prefix, yes_no(s->selinux_context_from_net));
-
- if (s->control_pid > 0)
- fprintf(f,
- "%sControl PID: "PID_FMT"\n",
- prefix, s->control_pid);
-
- if (s->bind_to_device)
- fprintf(f,
- "%sBindToDevice: %s\n",
- prefix, s->bind_to_device);
-
- if (s->accept)
- fprintf(f,
- "%sAccepted: %u\n"
- "%sNConnections: %u\n"
- "%sMaxConnections: %u\n",
- prefix, s->n_accepted,
- prefix, s->n_connections,
- prefix, s->max_connections);
-
- if (s->priority >= 0)
- fprintf(f,
- "%sPriority: %i\n",
- prefix, s->priority);
-
- if (s->receive_buffer > 0)
- fprintf(f,
- "%sReceiveBuffer: %zu\n",
- prefix, s->receive_buffer);
-
- if (s->send_buffer > 0)
- fprintf(f,
- "%sSendBuffer: %zu\n",
- prefix, s->send_buffer);
-
- if (s->ip_tos >= 0)
- fprintf(f,
- "%sIPTOS: %i\n",
- prefix, s->ip_tos);
-
- if (s->ip_ttl >= 0)
- fprintf(f,
- "%sIPTTL: %i\n",
- prefix, s->ip_ttl);
-
- if (s->pipe_size > 0)
- fprintf(f,
- "%sPipeSize: %zu\n",
- prefix, s->pipe_size);
-
- if (s->mark >= 0)
- fprintf(f,
- "%sMark: %i\n",
- prefix, s->mark);
-
- if (s->mq_maxmsg > 0)
- fprintf(f,
- "%sMessageQueueMaxMessages: %li\n",
- prefix, s->mq_maxmsg);
-
- if (s->mq_msgsize > 0)
- fprintf(f,
- "%sMessageQueueMessageSize: %li\n",
- prefix, s->mq_msgsize);
-
- if (s->reuse_port)
- fprintf(f,
- "%sReusePort: %s\n",
- prefix, yes_no(s->reuse_port));
-
- if (s->smack)
- fprintf(f,
- "%sSmackLabel: %s\n",
- prefix, s->smack);
-
- if (s->smack_ip_in)
- fprintf(f,
- "%sSmackLabelIPIn: %s\n",
- prefix, s->smack_ip_in);
-
- if (s->smack_ip_out)
- fprintf(f,
- "%sSmackLabelIPOut: %s\n",
- prefix, s->smack_ip_out);
-
- if (!isempty(s->user) || !isempty(s->group))
- fprintf(f,
- "%sOwnerUser: %s\n"
- "%sOwnerGroup: %s\n",
- prefix, strna(s->user),
- prefix, strna(s->group));
-
- if (s->keep_alive_time > 0)
- fprintf(f,
- "%sKeepAliveTimeSec: %s\n",
- prefix, format_timespan(time_string, FORMAT_TIMESPAN_MAX, s->keep_alive_time, USEC_PER_SEC));
-
- if (s->keep_alive_interval)
- fprintf(f,
- "%sKeepAliveIntervalSec: %s\n",
- prefix, format_timespan(time_string, FORMAT_TIMESPAN_MAX, s->keep_alive_interval, USEC_PER_SEC));
-
- if (s->keep_alive_cnt)
- fprintf(f,
- "%sKeepAliveProbes: %u\n",
- prefix, s->keep_alive_cnt);
-
- if (s->defer_accept)
- fprintf(f,
- "%sDeferAcceptSec: %s\n",
- prefix, format_timespan(time_string, FORMAT_TIMESPAN_MAX, s->defer_accept, USEC_PER_SEC));
-
- LIST_FOREACH(port, p, s->ports) {
-
- if (p->type == SOCKET_SOCKET) {
- const char *t;
- int r;
- char *k = NULL;
-
- if ((r = socket_address_print(&p->address, &k)) < 0)
- t = strerror(-r);
- else
- t = k;
-
- fprintf(f, "%s%s: %s\n", prefix, listen_lookup(socket_address_family(&p->address), p->address.type), t);
- free(k);
- } else if (p->type == SOCKET_SPECIAL)
- fprintf(f, "%sListenSpecial: %s\n", prefix, p->path);
- else if (p->type == SOCKET_MQUEUE)
- fprintf(f, "%sListenMessageQueue: %s\n", prefix, p->path);
- else
- fprintf(f, "%sListenFIFO: %s\n", prefix, p->path);
- }
-
- exec_context_dump(&s->exec_context, f, prefix);
- kill_context_dump(&s->kill_context, f, prefix);
-
- for (c = 0; c < _SOCKET_EXEC_COMMAND_MAX; c++) {
- if (!s->exec_command[c])
- continue;
-
- fprintf(f, "%s-> %s:\n",
- prefix, socket_exec_command_to_string(c));
-
- exec_command_dump_list(s->exec_command[c], f, prefix2);
- }
-}
-
-static int instance_from_socket(int fd, unsigned nr, char **instance) {
- socklen_t l;
- char *r;
- union sockaddr_union 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: {
- static const unsigned char ipv4_prefix[] = {
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF
- };
-
- if (memcmp(&local.in6.sin6_addr, ipv4_prefix, sizeof(ipv4_prefix)) == 0 &&
- memcmp(&remote.in6.sin6_addr, ipv4_prefix, sizeof(ipv4_prefix)) == 0) {
- const uint8_t
- *a = local.in6.sin6_addr.s6_addr+12,
- *b = remote.in6.sin6_addr.s6_addr+12;
-
- if (asprintf(&r,
- "%u-%u.%u.%u.%u:%u-%u.%u.%u.%u:%u",
- nr,
- a[0], a[1], a[2], a[3],
- ntohs(local.in6.sin6_port),
- b[0], b[1], b[2], b[3],
- ntohs(remote.in6.sin6_port)) < 0)
- return -ENOMEM;
- } else {
- 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;
- int k;
-
- k = getpeercred(fd, &ucred);
- if (k >= 0) {
- if (asprintf(&r,
- "%u-"PID_FMT"-"UID_FMT,
- nr, ucred.pid, ucred.uid) < 0)
- return -ENOMEM;
- } else if (k == -ENODATA) {
- /* This handles the case where somebody is
- * connecting from another pid/uid namespace
- * (e.g. from outside of our container). */
- if (asprintf(&r,
- "%u-unknown",
- nr) < 0)
- return -ENOMEM;
- } else
- return k;
-
- break;
- }
-
- default:
- assert_not_reached("Unhandled socket type.");
- }
-
- *instance = r;
- return 0;
-}
-
-static void socket_close_fds(Socket *s) {
- SocketPort *p;
- char **i;
-
- assert(s);
-
- LIST_FOREACH(port, p, s->ports) {
-
- p->event_source = sd_event_source_unref(p->event_source);
-
- if (p->fd < 0)
- continue;
-
- p->fd = safe_close(p->fd);
-
- /* One little note: we should normally not delete any
- * sockets in the file system here! After all some
- * other process we spawned might still have a
- * reference of this fd and wants to continue to use
- * it. Therefore we delete sockets in the file system
- * before we create a new one, not after we stopped
- * using one! */
-
- if (s->remove_on_stop) {
- switch (p->type) {
-
- case SOCKET_FIFO:
- unlink(p->path);
- break;
-
- case SOCKET_MQUEUE:
- mq_unlink(p->path);
- break;
-
- case SOCKET_SOCKET:
- socket_address_unlink(&p->address);
- break;
-
- default:
- break;
- }
- }
- }
-
- if (s->remove_on_stop)
- STRV_FOREACH(i, s->symlinks)
- unlink(*i);
-}
-
-static void socket_apply_socket_options(Socket *s, int fd) {
- int r;
-
- assert(s);
- assert(fd >= 0);
-
- if (s->keep_alive) {
- int b = s->keep_alive;
- if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &b, sizeof(b)) < 0)
- log_unit_warning(UNIT(s)->id, "SO_KEEPALIVE failed: %m");
- }
-
- if (s->keep_alive_time) {
- int value = s->keep_alive_time / USEC_PER_SEC;
- if (setsockopt(fd, SOL_TCP, TCP_KEEPIDLE, &value, sizeof(value)) < 0)
- log_unit_warning(UNIT(s)->id, "TCP_KEEPIDLE failed: %m");
- }
-
- if (s->keep_alive_interval) {
- int value = s->keep_alive_interval / USEC_PER_SEC;
- if (setsockopt(fd, SOL_TCP, TCP_KEEPINTVL, &value, sizeof(value)) < 0)
- log_unit_warning(UNIT(s)->id, "TCP_KEEPINTVL failed: %m");
- }
-
- if (s->keep_alive_cnt) {
- int value = s->keep_alive_cnt;
- if (setsockopt(fd, SOL_SOCKET, TCP_KEEPCNT, &value, sizeof(value)) < 0)
- log_unit_warning(UNIT(s)->id, "TCP_KEEPCNT failed: %m");
- }
-
- if (s->defer_accept) {
- int value = s->defer_accept / USEC_PER_SEC;
- if (setsockopt(fd, SOL_TCP, TCP_DEFER_ACCEPT, &value, sizeof(value)) < 0)
- log_unit_warning(UNIT(s)->id, "TCP_DEFER_ACCEPT failed: %m");
- }
-
- if (s->no_delay) {
- int b = s->no_delay;
- if (setsockopt(fd, SOL_TCP, TCP_NODELAY, &b, sizeof(b)) < 0)
- log_unit_warning(UNIT(s)->id, "TCP_NODELAY failed: %m");
- }
-
- if (s->broadcast) {
- int one = 1;
- if (setsockopt(fd, SOL_SOCKET, SO_BROADCAST, &one, sizeof(one)) < 0)
- log_unit_warning(UNIT(s)->id, "SO_BROADCAST failed: %m");
- }
-
- if (s->pass_cred) {
- int one = 1;
- if (setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0)
- log_unit_warning(UNIT(s)->id, "SO_PASSCRED failed: %m");
- }
-
- if (s->pass_sec) {
- int one = 1;
- if (setsockopt(fd, SOL_SOCKET, SO_PASSSEC, &one, sizeof(one)) < 0)
- log_unit_warning(UNIT(s)->id, "SO_PASSSEC failed: %m");
- }
-
- if (s->priority >= 0)
- if (setsockopt(fd, SOL_SOCKET, SO_PRIORITY, &s->priority, sizeof(s->priority)) < 0)
- log_unit_warning(UNIT(s)->id, "SO_PRIORITY failed: %m");
-
- if (s->receive_buffer > 0) {
- int value = (int) s->receive_buffer;
-
- /* We first try with SO_RCVBUFFORCE, in case we have the perms for that */
-
- if (setsockopt(fd, SOL_SOCKET, SO_RCVBUFFORCE, &value, sizeof(value)) < 0)
- if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &value, sizeof(value)) < 0)
- log_unit_warning(UNIT(s)->id, "SO_RCVBUF failed: %m");
- }
-
- if (s->send_buffer > 0) {
- int value = (int) s->send_buffer;
- if (setsockopt(fd, SOL_SOCKET, SO_SNDBUFFORCE, &value, sizeof(value)) < 0)
- if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &value, sizeof(value)) < 0)
- log_unit_warning(UNIT(s)->id, "SO_SNDBUF failed: %m");
- }
-
- if (s->mark >= 0)
- if (setsockopt(fd, SOL_SOCKET, SO_MARK, &s->mark, sizeof(s->mark)) < 0)
- log_unit_warning(UNIT(s)->id, "SO_MARK failed: %m");
-
- if (s->ip_tos >= 0)
- if (setsockopt(fd, IPPROTO_IP, IP_TOS, &s->ip_tos, sizeof(s->ip_tos)) < 0)
- log_unit_warning(UNIT(s)->id, "IP_TOS failed: %m");
-
- if (s->ip_ttl >= 0) {
- int x;
-
- r = setsockopt(fd, IPPROTO_IP, IP_TTL, &s->ip_ttl, sizeof(s->ip_ttl));
-
- if (socket_ipv6_is_supported())
- x = setsockopt(fd, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &s->ip_ttl, sizeof(s->ip_ttl));
- else {
- x = -1;
- errno = EAFNOSUPPORT;
- }
-
- if (r < 0 && x < 0)
- log_unit_warning(UNIT(s)->id,
- "IP_TTL/IPV6_UNICAST_HOPS failed: %m");
- }
-
- if (s->tcp_congestion)
- if (setsockopt(fd, SOL_TCP, TCP_CONGESTION, s->tcp_congestion, strlen(s->tcp_congestion)+1) < 0)
- log_unit_warning(UNIT(s)->id, "TCP_CONGESTION failed: %m");
-
- if (s->reuse_port) {
- int b = s->reuse_port;
- if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &b, sizeof(b)) < 0)
- log_unit_warning(UNIT(s)->id, "SO_REUSEPORT failed: %m");
- }
-
- if (s->smack_ip_in) {
- r = mac_smack_apply_ip_in_fd(fd, s->smack_ip_in);
- if (r < 0)
- log_unit_error_errno(UNIT(s)->id, r, "mac_smack_apply_ip_in_fd: %m");
- }
-
- if (s->smack_ip_out) {
- r = mac_smack_apply_ip_out_fd(fd, s->smack_ip_out);
- if (r < 0)
- log_unit_error_errno(UNIT(s)->id, r, "mac_smack_apply_ip_out_fd: %m");
- }
-}
-
-static void socket_apply_fifo_options(Socket *s, int fd) {
- int r;
-
- assert(s);
- assert(fd >= 0);
-
- if (s->pipe_size > 0)
- if (fcntl(fd, F_SETPIPE_SZ, s->pipe_size) < 0)
- log_unit_warning(UNIT(s)->id, "F_SETPIPE_SZ: %m");
-
- if (s->smack) {
- r = mac_smack_apply_fd(fd, s->smack);
- if (r < 0)
- log_unit_error_errno(UNIT(s)->id, r, "mac_smack_apply_fd: %m");
- }
-}
-
-static int fifo_address_create(
- const char *path,
- mode_t directory_mode,
- mode_t socket_mode,
- int *_fd) {
-
- int fd = -1, r = 0;
- struct stat st;
- mode_t old_mask;
-
- assert(path);
- assert(_fd);
-
- mkdir_parents_label(path, directory_mode);
-
- r = mac_selinux_create_file_prepare(path, S_IFIFO);
- if (r < 0)
- goto fail;
-
- /* Enforce the right access mode for the fifo */
- old_mask = umask(~ socket_mode);
-
- /* Include the original umask in our mask */
- umask(~socket_mode | old_mask);
-
- r = mkfifo(path, socket_mode);
- umask(old_mask);
-
- if (r < 0 && errno != EEXIST) {
- r = -errno;
- goto fail;
- }
-
- if ((fd = open(path, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW)) < 0) {
- r = -errno;
- goto fail;
- }
-
- mac_selinux_create_file_clear();
-
- if (fstat(fd, &st) < 0) {
- r = -errno;
- goto fail;
- }
-
- if (!S_ISFIFO(st.st_mode) ||
- (st.st_mode & 0777) != (socket_mode & ~old_mask) ||
- st.st_uid != getuid() ||
- st.st_gid != getgid()) {
-
- r = -EEXIST;
- goto fail;
- }
-
- *_fd = fd;
- return 0;
-
-fail:
- mac_selinux_create_file_clear();
- safe_close(fd);
-
- return r;
-}
-
-static int special_address_create(
- const char *path,
- int *_fd) {
-
- int fd = -1, r = 0;
- struct stat st;
-
- assert(path);
- assert(_fd);
-
- fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW);
- if (fd < 0) {
- r = -errno;
- goto fail;
- }
-
- if (fstat(fd, &st) < 0) {
- r = -errno;
- goto fail;
- }
-
- /* Check whether this is a /proc, /sys or /dev file or char device */
- if (!S_ISREG(st.st_mode) && !S_ISCHR(st.st_mode)) {
- r = -EEXIST;
- goto fail;
- }
-
- *_fd = fd;
- return 0;
-
-fail:
- safe_close(fd);
-
- return r;
-}
-
-static int mq_address_create(
- const char *path,
- mode_t mq_mode,
- long maxmsg,
- long msgsize,
- int *_fd) {
-
- int fd = -1, r = 0;
- struct stat st;
- mode_t old_mask;
- struct mq_attr _attr, *attr = NULL;
-
- assert(path);
- assert(_fd);
-
- if (maxmsg > 0 && msgsize > 0) {
- zero(_attr);
- _attr.mq_flags = O_NONBLOCK;
- _attr.mq_maxmsg = maxmsg;
- _attr.mq_msgsize = msgsize;
- attr = &_attr;
- }
-
- /* Enforce the right access mode for the mq */
- old_mask = umask(~ mq_mode);
-
- /* Include the original umask in our mask */
- umask(~mq_mode | old_mask);
- fd = mq_open(path, O_RDONLY|O_CLOEXEC|O_NONBLOCK|O_CREAT, mq_mode, attr);
- umask(old_mask);
-
- if (fd < 0) {
- r = -errno;
- goto fail;
- }
-
- if (fstat(fd, &st) < 0) {
- r = -errno;
- goto fail;
- }
-
- if ((st.st_mode & 0777) != (mq_mode & ~old_mask) ||
- st.st_uid != getuid() ||
- st.st_gid != getgid()) {
-
- r = -EEXIST;
- goto fail;
- }
-
- *_fd = fd;
- return 0;
-
-fail:
- safe_close(fd);
- return r;
-}
-
-static int socket_symlink(Socket *s) {
- const char *p;
- char **i;
-
- assert(s);
-
- p = socket_find_symlink_target(s);
- if (!p)
- return 0;
-
- STRV_FOREACH(i, s->symlinks)
- symlink_label(p, *i);
-
- return 0;
-}
-
-static int socket_open_fds(Socket *s) {
- SocketPort *p;
- int r;
- char *label = NULL;
- bool know_label = false;
-
- assert(s);
-
- LIST_FOREACH(port, p, s->ports) {
-
- if (p->fd >= 0)
- continue;
-
- if (p->type == SOCKET_SOCKET) {
-
- if (!know_label) {
- /* Figure out label, if we don't it know
- * yet. We do it once, for the first
- * socket where we need this and
- * remember it for the rest. */
-
- if (s->selinux_context_from_net) {
- /* Get it from the network label */
-
- r = mac_selinux_get_our_label(&label);
- if (r < 0 && r != -EOPNOTSUPP)
- goto rollback;
-
- } else {
- /* Get it from the executable we are about to start */
-
- r = socket_instantiate_service(s);
- if (r < 0)
- goto rollback;
-
- if (UNIT_ISSET(s->service) &&
- SERVICE(UNIT_DEREF(s->service))->exec_command[SERVICE_EXEC_START]) {
- r = mac_selinux_get_create_label_from_exe(SERVICE(UNIT_DEREF(s->service))->exec_command[SERVICE_EXEC_START]->path, &label);
- if (r < 0 && r != -EPERM && r != -EOPNOTSUPP)
- goto rollback;
- }
- }
-
- know_label = true;
- }
-
- r = socket_address_listen(
- &p->address,
- SOCK_CLOEXEC|SOCK_NONBLOCK,
- s->backlog,
- s->bind_ipv6_only,
- s->bind_to_device,
- s->free_bind,
- s->transparent,
- s->directory_mode,
- s->socket_mode,
- label);
- if (r < 0)
- goto rollback;
-
- p->fd = r;
- socket_apply_socket_options(s, p->fd);
- socket_symlink(s);
-
- } else if (p->type == SOCKET_SPECIAL) {
-
- r = special_address_create(
- p->path,
- &p->fd);
- if (r < 0)
- goto rollback;
-
- } else if (p->type == SOCKET_FIFO) {
-
- r = fifo_address_create(
- p->path,
- s->directory_mode,
- s->socket_mode,
- &p->fd);
- if (r < 0)
- goto rollback;
-
- socket_apply_fifo_options(s, p->fd);
- socket_symlink(s);
-
- } else if (p->type == SOCKET_MQUEUE) {
-
- r = mq_address_create(
- p->path,
- s->socket_mode,
- s->mq_maxmsg,
- s->mq_msgsize,
- &p->fd);
- if (r < 0)
- goto rollback;
- } else
- assert_not_reached("Unknown port type");
- }
-
- mac_selinux_free(label);
- return 0;
-
-rollback:
- socket_close_fds(s);
- mac_selinux_free(label);
-
- return r;
-}
-
-static void socket_unwatch_fds(Socket *s) {
- SocketPort *p;
- int r;
-
- assert(s);
-
- LIST_FOREACH(port, p, s->ports) {
- if (p->fd < 0)
- continue;
-
- if (!p->event_source)
- continue;
-
- r = sd_event_source_set_enabled(p->event_source, SD_EVENT_OFF);
- if (r < 0)
- log_unit_debug(UNIT(s)->id, "Failed to disable event source.");
- }
-}
-
-static int socket_watch_fds(Socket *s) {
- SocketPort *p;
- int r;
-
- assert(s);
-
- LIST_FOREACH(port, p, s->ports) {
- if (p->fd < 0)
- continue;
-
- if (p->event_source)
- r = sd_event_source_set_enabled(p->event_source, SD_EVENT_ON);
- else
- r = sd_event_add_io(UNIT(s)->manager->event, &p->event_source, p->fd, EPOLLIN, socket_dispatch_io, p);
-
- if (r < 0) {
- log_unit_warning_errno(UNIT(s)->id, r, "Failed to watch listening fds: %m");
- goto fail;
- }
- }
-
- return 0;
-
-fail:
- socket_unwatch_fds(s);
- return r;
-}
-
-static void socket_set_state(Socket *s, SocketState state) {
- SocketState old_state;
- assert(s);
-
- old_state = s->state;
- s->state = state;
-
- if (!IN_SET(state,
- SOCKET_START_PRE,
- SOCKET_START_CHOWN,
- SOCKET_START_POST,
- SOCKET_STOP_PRE,
- SOCKET_STOP_PRE_SIGTERM,
- SOCKET_STOP_PRE_SIGKILL,
- SOCKET_STOP_POST,
- SOCKET_FINAL_SIGTERM,
- SOCKET_FINAL_SIGKILL)) {
-
- s->timer_event_source = sd_event_source_unref(s->timer_event_source);
- socket_unwatch_control_pid(s);
- s->control_command = NULL;
- s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID;
- }
-
- if (state != SOCKET_LISTENING)
- socket_unwatch_fds(s);
-
- if (!IN_SET(state,
- SOCKET_START_CHOWN,
- SOCKET_START_POST,
- SOCKET_LISTENING,
- SOCKET_RUNNING,
- SOCKET_STOP_PRE,
- SOCKET_STOP_PRE_SIGTERM,
- SOCKET_STOP_PRE_SIGKILL))
- socket_close_fds(s);
-
- if (state != old_state)
- log_unit_debug(UNIT(s)->id, "%s changed %s -> %s",
- UNIT(s)->id, socket_state_to_string(old_state), socket_state_to_string(state));
-
- unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], true);
-}
-
-static int socket_coldplug(Unit *u, Hashmap *deferred_work) {
- Socket *s = SOCKET(u);
- int r;
-
- assert(s);
- assert(s->state == SOCKET_DEAD);
-
- if (s->deserialized_state == s->state)
- return 0;
-
- if (IN_SET(s->deserialized_state,
- SOCKET_START_PRE,
- SOCKET_START_CHOWN,
- SOCKET_START_POST,
- SOCKET_STOP_PRE,
- SOCKET_STOP_PRE_SIGTERM,
- SOCKET_STOP_PRE_SIGKILL,
- SOCKET_STOP_POST,
- SOCKET_FINAL_SIGTERM,
- SOCKET_FINAL_SIGKILL)) {
-
- if (s->control_pid <= 0)
- return -EBADMSG;
-
- r = unit_watch_pid(UNIT(s), s->control_pid);
- if (r < 0)
- return r;
-
- r = socket_arm_timer(s);
- if (r < 0)
- return r;
- }
-
- if (IN_SET(s->deserialized_state,
- SOCKET_START_CHOWN,
- SOCKET_START_POST,
- SOCKET_LISTENING,
- SOCKET_RUNNING,
- SOCKET_STOP_PRE,
- SOCKET_STOP_PRE_SIGTERM,
- SOCKET_STOP_PRE_SIGKILL)) {
- r = socket_open_fds(s);
- if (r < 0)
- return r;
- }
-
- if (s->deserialized_state == SOCKET_LISTENING) {
- r = socket_watch_fds(s);
- if (r < 0)
- return r;
- }
-
- socket_set_state(s, s->deserialized_state);
- return 0;
-}
-
-static int socket_spawn(Socket *s, ExecCommand *c, pid_t *_pid) {
- _cleanup_free_ char **argv = NULL;
- pid_t pid;
- int r;
- ExecParameters exec_params = {
- .apply_permissions = true,
- .apply_chroot = true,
- .apply_tty_stdin = true,
- };
-
- assert(s);
- assert(c);
- assert(_pid);
-
- (void) unit_realize_cgroup(UNIT(s));
- if (s->reset_cpu_usage) {
- (void) unit_reset_cpu_usage(UNIT(s));
- s->reset_cpu_usage = false;
- }
-
- r = unit_setup_exec_runtime(UNIT(s));
- if (r < 0)
- goto fail;
-
- r = socket_arm_timer(s);
- if (r < 0)
- goto fail;
-
- r = unit_full_printf_strv(UNIT(s), c->argv, &argv);
- if (r < 0)
- goto fail;
-
- exec_params.argv = argv;
- exec_params.environment = UNIT(s)->manager->environment;
- exec_params.confirm_spawn = UNIT(s)->manager->confirm_spawn;
- exec_params.cgroup_supported = UNIT(s)->manager->cgroup_supported;
- exec_params.cgroup_path = UNIT(s)->cgroup_path;
- exec_params.cgroup_delegate = s->cgroup_context.delegate;
- exec_params.runtime_prefix = manager_get_runtime_prefix(UNIT(s)->manager);
- exec_params.unit_id = UNIT(s)->id;
-
- r = exec_spawn(c,
- &s->exec_context,
- &exec_params,
- s->exec_runtime,
- &pid);
- if (r < 0)
- goto fail;
-
- r = unit_watch_pid(UNIT(s), pid);
- if (r < 0)
- /* FIXME: we need to do something here */
- goto fail;
-
- *_pid = pid;
- return 0;
-
-fail:
- s->timer_event_source = sd_event_source_unref(s->timer_event_source);
- return r;
-}
-
-static int socket_chown(Socket *s, pid_t *_pid) {
- pid_t pid;
- int r;
-
- r = socket_arm_timer(s);
- if (r < 0)
- goto fail;
-
- /* We have to resolve the user names out-of-process, hence
- * let's fork here. It's messy, but well, what can we do? */
-
- pid = fork();
- if (pid < 0)
- return -errno;
-
- if (pid == 0) {
- SocketPort *p;
- uid_t uid = UID_INVALID;
- gid_t gid = GID_INVALID;
- int ret;
-
- default_signals(SIGNALS_CRASH_HANDLER, SIGNALS_IGNORE, -1);
- ignore_signals(SIGPIPE, -1);
- log_forget_fds();
-
- if (!isempty(s->user)) {
- const char *user = s->user;
-
- r = get_user_creds(&user, &uid, &gid, NULL, NULL);
- if (r < 0) {
- ret = EXIT_USER;
- goto fail_child;
- }
- }
-
- if (!isempty(s->group)) {
- const char *group = s->group;
-
- r = get_group_creds(&group, &gid);
- if (r < 0) {
- ret = EXIT_GROUP;
- goto fail_child;
- }
- }
-
- LIST_FOREACH(port, p, s->ports) {
- const char *path = NULL;
-
- if (p->type == SOCKET_SOCKET)
- path = socket_address_get_path(&p->address);
- else if (p->type == SOCKET_FIFO)
- path = p->path;
-
- if (!path)
- continue;
-
- if (chown(path, uid, gid) < 0) {
- r = -errno;
- ret = EXIT_CHOWN;
- goto fail_child;
- }
- }
-
- _exit(0);
-
- fail_child:
- log_open();
- log_error_errno(r, "Failed to chown socket at step %s: %m", exit_status_to_string(ret, EXIT_STATUS_SYSTEMD));
-
- _exit(ret);
- }
-
- r = unit_watch_pid(UNIT(s), pid);
- if (r < 0)
- goto fail;
-
- *_pid = pid;
- return 0;
-
-fail:
- s->timer_event_source = sd_event_source_unref(s->timer_event_source);
- return r;
-}
-
-static void socket_enter_dead(Socket *s, SocketResult f) {
- assert(s);
-
- if (f != SOCKET_SUCCESS)
- s->result = f;
-
- exec_runtime_destroy(s->exec_runtime);
- s->exec_runtime = exec_runtime_unref(s->exec_runtime);
-
- exec_context_destroy_runtime_directory(&s->exec_context, manager_get_runtime_prefix(UNIT(s)->manager));
-
- socket_set_state(s, s->result != SOCKET_SUCCESS ? SOCKET_FAILED : SOCKET_DEAD);
-}
-
-static void socket_enter_signal(Socket *s, SocketState state, SocketResult f);
-
-static void socket_enter_stop_post(Socket *s, SocketResult f) {
- int r;
- assert(s);
-
- if (f != SOCKET_SUCCESS)
- s->result = f;
-
- socket_unwatch_control_pid(s);
- s->control_command_id = SOCKET_EXEC_STOP_POST;
- s->control_command = s->exec_command[SOCKET_EXEC_STOP_POST];
-
- if (s->control_command) {
- r = socket_spawn(s, s->control_command, &s->control_pid);
- if (r < 0)
- goto fail;
-
- socket_set_state(s, SOCKET_STOP_POST);
- } else
- socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_SUCCESS);
-
- return;
-
-fail:
- log_unit_warning(UNIT(s)->id,
- "%s failed to run 'stop-post' task: %s",
- UNIT(s)->id, strerror(-r));
- socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_RESOURCES);
-}
-
-static void socket_enter_signal(Socket *s, SocketState state, SocketResult f) {
- int r;
-
- assert(s);
-
- if (f != SOCKET_SUCCESS)
- s->result = f;
-
- r = unit_kill_context(
- UNIT(s),
- &s->kill_context,
- (state != SOCKET_STOP_PRE_SIGTERM && state != SOCKET_FINAL_SIGTERM) ?
- KILL_KILL : KILL_TERMINATE,
- -1,
- s->control_pid,
- false);
- if (r < 0)
- goto fail;
-
- if (r > 0) {
- r = socket_arm_timer(s);
- if (r < 0)
- goto fail;
-
- socket_set_state(s, state);
- } else if (state == SOCKET_STOP_PRE_SIGTERM)
- socket_enter_signal(s, SOCKET_STOP_PRE_SIGKILL, SOCKET_SUCCESS);
- else if (state == SOCKET_STOP_PRE_SIGKILL)
- socket_enter_stop_post(s, SOCKET_SUCCESS);
- else if (state == SOCKET_FINAL_SIGTERM)
- socket_enter_signal(s, SOCKET_FINAL_SIGKILL, SOCKET_SUCCESS);
- else
- socket_enter_dead(s, SOCKET_SUCCESS);
-
- return;
-
-fail:
- log_unit_warning_errno(UNIT(s)->id, r, "%s failed to kill processes: %m", UNIT(s)->id);
-
- if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL)
- socket_enter_stop_post(s, SOCKET_FAILURE_RESOURCES);
- else
- socket_enter_dead(s, SOCKET_FAILURE_RESOURCES);
-}
-
-static void socket_enter_stop_pre(Socket *s, SocketResult f) {
- int r;
- assert(s);
-
- if (f != SOCKET_SUCCESS)
- s->result = f;
-
- socket_unwatch_control_pid(s);
- s->control_command_id = SOCKET_EXEC_STOP_PRE;
- s->control_command = s->exec_command[SOCKET_EXEC_STOP_PRE];
-
- if (s->control_command) {
- r = socket_spawn(s, s->control_command, &s->control_pid);
- if (r < 0)
- goto fail;
-
- socket_set_state(s, SOCKET_STOP_PRE);
- } else
- socket_enter_stop_post(s, SOCKET_SUCCESS);
-
- return;
-
-fail:
- log_unit_warning_errno(UNIT(s)->id, r, "%s failed to run 'stop-pre' task: %m", UNIT(s)->id);
- socket_enter_stop_post(s, SOCKET_FAILURE_RESOURCES);
-}
-
-static void socket_enter_listening(Socket *s) {
- int r;
- assert(s);
-
- r = socket_watch_fds(s);
- if (r < 0) {
- log_unit_warning_errno(UNIT(s)->id, r, "%s failed to watch sockets: %m", UNIT(s)->id);
- goto fail;
- }
-
- socket_set_state(s, SOCKET_LISTENING);
- return;
-
-fail:
- socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES);
-}
-
-static void socket_enter_start_post(Socket *s) {
- int r;
- assert(s);
-
- socket_unwatch_control_pid(s);
- s->control_command_id = SOCKET_EXEC_START_POST;
- s->control_command = s->exec_command[SOCKET_EXEC_START_POST];
-
- if (s->control_command) {
- r = socket_spawn(s, s->control_command, &s->control_pid);
- if (r < 0) {
- log_unit_warning_errno(UNIT(s)->id, r, "%s failed to run 'start-post' task: %m", UNIT(s)->id);
- goto fail;
- }
-
- socket_set_state(s, SOCKET_START_POST);
- } else
- socket_enter_listening(s);
-
- return;
-
-fail:
- socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES);
-}
-
-static void socket_enter_start_chown(Socket *s) {
- int r;
-
- assert(s);
-
- r = socket_open_fds(s);
- if (r < 0) {
- log_unit_warning_errno(UNIT(s)->id, r, "%s failed to listen on sockets: %m", UNIT(s)->id);
- goto fail;
- }
-
- if (!isempty(s->user) || !isempty(s->group)) {
-
- socket_unwatch_control_pid(s);
- s->control_command_id = SOCKET_EXEC_START_CHOWN;
- s->control_command = NULL;
-
- r = socket_chown(s, &s->control_pid);
- if (r < 0) {
- log_unit_warning_errno(UNIT(s)->id, r, "%s failed to fork 'start-chown' task: %m", UNIT(s)->id);
- goto fail;
- }
-
- socket_set_state(s, SOCKET_START_CHOWN);
- } else
- socket_enter_start_post(s);
-
- return;
-
-fail:
- socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES);
-}
-
-static void socket_enter_start_pre(Socket *s) {
- int r;
- assert(s);
-
- socket_unwatch_control_pid(s);
- s->control_command_id = SOCKET_EXEC_START_PRE;
- s->control_command = s->exec_command[SOCKET_EXEC_START_PRE];
-
- if (s->control_command) {
- r = socket_spawn(s, s->control_command, &s->control_pid);
- if (r < 0) {
- log_unit_warning_errno(UNIT(s)->id, r, "%s failed to run 'start-pre' task: %m", UNIT(s)->id);
- goto fail;
- }
-
- socket_set_state(s, SOCKET_START_PRE);
- } else
- socket_enter_start_chown(s);
-
- return;
-
-fail:
- socket_enter_dead(s, SOCKET_FAILURE_RESOURCES);
-}
-
-static void socket_enter_running(Socket *s, int cfd) {
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- int r;
-
- assert(s);
-
- /* We don't take connections anymore if we are supposed to
- * shut down anyway */
- if (unit_stop_pending(UNIT(s))) {
-
- log_unit_debug(UNIT(s)->id, "Suppressing connection request on %s since unit stop is scheduled.", UNIT(s)->id);
-
- if (cfd >= 0)
- safe_close(cfd);
- else {
- /* Flush all sockets by closing and reopening them */
- socket_close_fds(s);
-
- r = socket_open_fds(s);
- if (r < 0) {
- log_unit_warning_errno(UNIT(s)->id, r, "%s failed to listen on sockets: %m", UNIT(s)->id);
- socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES);
- return;
- }
-
- r = socket_watch_fds(s);
- if (r < 0) {
- log_unit_warning_errno(UNIT(s)->id, r, "%s failed to watch sockets: %m", UNIT(s)->id);
- socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES);
- }
- }
-
- return;
- }
-
- if (cfd < 0) {
- Iterator i;
- Unit *other;
- bool pending = false;
-
- /* If there's already a start pending don't bother to
- * do anything */
- SET_FOREACH(other, UNIT(s)->dependencies[UNIT_TRIGGERS], i)
- if (unit_active_or_pending(other)) {
- pending = true;
- break;
- }
-
- if (!pending) {
- if (!UNIT_ISSET(s->service)) {
- log_unit_error(UNIT(s)->id, "%s: service to activate vanished, refusing activation.", UNIT(s)->id);
- r = -ENOENT;
- goto fail;
- }
-
- r = manager_add_job(UNIT(s)->manager, JOB_START, UNIT_DEREF(s->service), JOB_REPLACE, true, &error, NULL);
- if (r < 0)
- goto fail;
- }
-
- socket_set_state(s, SOCKET_RUNNING);
- } else {
- _cleanup_free_ char *prefix = NULL, *instance = NULL, *name = NULL;
- Service *service;
-
- if (s->n_connections >= s->max_connections) {
- log_unit_warning(UNIT(s)->id, "%s: Too many incoming connections (%u)", UNIT(s)->id, s->n_connections);
- safe_close(cfd);
- return;
- }
-
- r = socket_instantiate_service(s);
- if (r < 0)
- goto fail;
-
- r = instance_from_socket(cfd, s->n_accepted, &instance);
- if (r < 0) {
- if (r != -ENOTCONN)
- goto fail;
-
- /* ENOTCONN is legitimate if TCP RST was received.
- * This connection is over, but the socket unit lives on. */
- safe_close(cfd);
- return;
- }
-
- prefix = unit_name_to_prefix(UNIT(s)->id);
- if (!prefix) {
- r = -ENOMEM;
- goto fail;
- }
-
- name = unit_name_build(prefix, instance, ".service");
- if (!name) {
- r = -ENOMEM;
- goto fail;
- }
-
- r = unit_add_name(UNIT_DEREF(s->service), name);
- if (r < 0)
- goto fail;
-
- service = SERVICE(UNIT_DEREF(s->service));
- unit_ref_unset(&s->service);
- s->n_accepted ++;
-
- UNIT(service)->no_gc = false;
-
- unit_choose_id(UNIT(service), name);
-
- r = service_set_socket_fd(service, cfd, s, s->selinux_context_from_net);
- if (r < 0)
- goto fail;
-
- cfd = -1;
- s->n_connections ++;
-
- r = manager_add_job(UNIT(s)->manager, JOB_START, UNIT(service), JOB_REPLACE, true, &error, NULL);
- if (r < 0)
- goto fail;
-
- /* Notify clients about changed counters */
- unit_add_to_dbus_queue(UNIT(s));
- }
-
- return;
-
-fail:
- log_unit_warning(UNIT(s)->id, "%s failed to queue service startup job (Maybe the service file is missing or not a %s unit?): %s",
- UNIT(s)->id, cfd >= 0 ? "template" : "non-template",
- bus_error_message(&error, r));
-
- socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES);
- safe_close(cfd);
-}
-
-static void socket_run_next(Socket *s) {
- int r;
-
- assert(s);
- assert(s->control_command);
- assert(s->control_command->command_next);
-
- socket_unwatch_control_pid(s);
-
- s->control_command = s->control_command->command_next;
-
- r = socket_spawn(s, s->control_command, &s->control_pid);
- if (r < 0)
- goto fail;
-
- return;
-
-fail:
- log_unit_warning_errno(UNIT(s)->id, r, "%s failed to run next task: %m", UNIT(s)->id);
-
- if (s->state == SOCKET_START_POST)
- socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES);
- else if (s->state == SOCKET_STOP_POST)
- socket_enter_dead(s, SOCKET_FAILURE_RESOURCES);
- else
- socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_RESOURCES);
-}
-
-static int socket_start(Unit *u) {
- Socket *s = SOCKET(u);
-
- assert(s);
-
- /* We cannot fulfill this request right now, try again later
- * please! */
- if (IN_SET(s->state,
- SOCKET_STOP_PRE,
- SOCKET_STOP_PRE_SIGKILL,
- SOCKET_STOP_PRE_SIGTERM,
- SOCKET_STOP_POST,
- SOCKET_FINAL_SIGTERM,
- SOCKET_FINAL_SIGKILL))
- return -EAGAIN;
-
- /* Already on it! */
- if (IN_SET(s->state,
- SOCKET_START_PRE,
- SOCKET_START_CHOWN,
- SOCKET_START_POST))
- return 0;
-
- /* Cannot run this without the service being around */
- if (UNIT_ISSET(s->service)) {
- Service *service;
-
- service = SERVICE(UNIT_DEREF(s->service));
-
- if (UNIT(service)->load_state != UNIT_LOADED) {
- log_unit_error(u->id, "Socket service %s not loaded, refusing.", UNIT(service)->id);
- return -ENOENT;
- }
-
- /* If the service is already active we cannot start the
- * socket */
- if (service->state != SERVICE_DEAD &&
- service->state != SERVICE_FAILED &&
- service->state != SERVICE_AUTO_RESTART) {
- log_unit_error(u->id, "Socket service %s already active, refusing.", UNIT(service)->id);
- return -EBUSY;
- }
- }
-
- assert(s->state == SOCKET_DEAD || s->state == SOCKET_FAILED);
-
- s->result = SOCKET_SUCCESS;
- s->reset_cpu_usage = true;
-
- socket_enter_start_pre(s);
-
- return 1;
-}
-
-static int socket_stop(Unit *u) {
- Socket *s = SOCKET(u);
-
- assert(s);
-
- /* Already on it */
- if (IN_SET(s->state,
- SOCKET_STOP_PRE,
- SOCKET_STOP_PRE_SIGTERM,
- SOCKET_STOP_PRE_SIGKILL,
- SOCKET_STOP_POST,
- SOCKET_FINAL_SIGTERM,
- SOCKET_FINAL_SIGKILL))
- return 0;
-
- /* If there's already something running we go directly into
- * kill mode. */
- if (IN_SET(s->state,
- SOCKET_START_PRE,
- SOCKET_START_CHOWN,
- SOCKET_START_POST)) {
- socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, SOCKET_SUCCESS);
- return -EAGAIN;
- }
-
- assert(s->state == SOCKET_LISTENING || s->state == SOCKET_RUNNING);
-
- socket_enter_stop_pre(s, SOCKET_SUCCESS);
- return 1;
-}
-
-static int socket_serialize(Unit *u, FILE *f, FDSet *fds) {
- Socket *s = SOCKET(u);
- SocketPort *p;
- int r;
-
- assert(u);
- assert(f);
- assert(fds);
-
- unit_serialize_item(u, f, "state", socket_state_to_string(s->state));
- unit_serialize_item(u, f, "result", socket_result_to_string(s->result));
- unit_serialize_item_format(u, f, "n-accepted", "%u", s->n_accepted);
-
- if (s->control_pid > 0)
- unit_serialize_item_format(u, f, "control-pid", PID_FMT, s->control_pid);
-
- if (s->control_command_id >= 0)
- unit_serialize_item(u, f, "control-command", socket_exec_command_to_string(s->control_command_id));
-
- LIST_FOREACH(port, p, s->ports) {
- int copy;
-
- if (p->fd < 0)
- continue;
-
- copy = fdset_put_dup(fds, p->fd);
- if (copy < 0)
- return copy;
-
- if (p->type == SOCKET_SOCKET) {
- _cleanup_free_ char *t = NULL;
-
- r = socket_address_print(&p->address, &t);
- if (r < 0)
- return r;
-
- if (socket_address_family(&p->address) == AF_NETLINK)
- unit_serialize_item_format(u, f, "netlink", "%i %s", copy, t);
- else
- unit_serialize_item_format(u, f, "socket", "%i %i %s", copy, p->address.type, t);
-
- } else if (p->type == SOCKET_SPECIAL)
- unit_serialize_item_format(u, f, "special", "%i %s", copy, p->path);
- else if (p->type == SOCKET_MQUEUE)
- unit_serialize_item_format(u, f, "mqueue", "%i %s", copy, p->path);
- else {
- assert(p->type == SOCKET_FIFO);
- unit_serialize_item_format(u, f, "fifo", "%i %s", copy, p->path);
- }
- }
-
- return 0;
-}
-
-static int socket_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
- Socket *s = SOCKET(u);
-
- assert(u);
- assert(key);
- assert(value);
-
- if (streq(key, "state")) {
- SocketState state;
-
- state = socket_state_from_string(value);
- if (state < 0)
- log_unit_debug(u->id, "Failed to parse state value %s", value);
- else
- s->deserialized_state = state;
- } else if (streq(key, "result")) {
- SocketResult f;
-
- f = socket_result_from_string(value);
- if (f < 0)
- log_unit_debug(u->id, "Failed to parse result value %s", value);
- else if (f != SOCKET_SUCCESS)
- s->result = f;
-
- } else if (streq(key, "n-accepted")) {
- unsigned k;
-
- if (safe_atou(value, &k) < 0)
- log_unit_debug(u->id, "Failed to parse n-accepted value %s", value);
- else
- s->n_accepted += k;
- } else if (streq(key, "control-pid")) {
- pid_t pid;
-
- if (parse_pid(value, &pid) < 0)
- log_unit_debug(u->id, "Failed to parse control-pid value %s", value);
- else
- s->control_pid = pid;
- } else if (streq(key, "control-command")) {
- SocketExecCommand id;
-
- id = socket_exec_command_from_string(value);
- if (id < 0)
- log_unit_debug(u->id, "Failed to parse exec-command value %s", value);
- else {
- s->control_command_id = id;
- s->control_command = s->exec_command[id];
- }
- } else if (streq(key, "fifo")) {
- int fd, skip = 0;
- SocketPort *p;
-
- if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd))
- log_unit_debug(u->id, "Failed to parse fifo value %s", value);
- else {
-
- LIST_FOREACH(port, p, s->ports)
- if (p->type == SOCKET_FIFO &&
- path_equal_or_files_same(p->path, value+skip))
- break;
-
- if (p) {
- safe_close(p->fd);
- p->fd = fdset_remove(fds, fd);
- }
- }
-
- } else if (streq(key, "special")) {
- int fd, skip = 0;
- SocketPort *p;
-
- if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd))
- log_unit_debug(u->id, "Failed to parse special value %s", value);
- else {
-
- LIST_FOREACH(port, p, s->ports)
- if (p->type == SOCKET_SPECIAL &&
- path_equal_or_files_same(p->path, value+skip))
- break;
-
- if (p) {
- safe_close(p->fd);
- p->fd = fdset_remove(fds, fd);
- }
- }
-
- } else if (streq(key, "mqueue")) {
- int fd, skip = 0;
- SocketPort *p;
-
- if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd))
- log_unit_debug(u->id, "Failed to parse mqueue value %s", value);
- else {
-
- LIST_FOREACH(port, p, s->ports)
- if (p->type == SOCKET_MQUEUE &&
- streq(p->path, value+skip))
- break;
-
- if (p) {
- safe_close(p->fd);
- p->fd = fdset_remove(fds, fd);
- }
- }
-
- } else if (streq(key, "socket")) {
- int fd, type, skip = 0;
- SocketPort *p;
-
- if (sscanf(value, "%i %i %n", &fd, &type, &skip) < 2 || fd < 0 || type < 0 || !fdset_contains(fds, fd))
- log_unit_debug(u->id, "Failed to parse socket value %s", value);
- else {
-
- LIST_FOREACH(port, p, s->ports)
- if (socket_address_is(&p->address, value+skip, type))
- break;
-
- if (p) {
- safe_close(p->fd);
- p->fd = fdset_remove(fds, fd);
- }
- }
-
- } else if (streq(key, "netlink")) {
- int fd, skip = 0;
- SocketPort *p;
-
- if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd))
- log_unit_debug(u->id, "Failed to parse socket value %s", value);
- else {
-
- LIST_FOREACH(port, p, s->ports)
- if (socket_address_is_netlink(&p->address, value+skip))
- break;
-
- if (p) {
- safe_close(p->fd);
- p->fd = fdset_remove(fds, fd);
- }
- }
- } else
- log_unit_debug(UNIT(s)->id, "Unknown serialization key '%s'", key);
-
- return 0;
-}
-
-static int socket_distribute_fds(Unit *u, FDSet *fds) {
- Socket *s = SOCKET(u);
- SocketPort *p;
-
- assert(u);
-
- LIST_FOREACH(port, p, s->ports) {
- Iterator i;
- int fd;
-
- if (p->type != SOCKET_SOCKET)
- continue;
-
- if (p->fd >= 0)
- continue;
-
- FDSET_FOREACH(fd, fds, i) {
- if (socket_address_matches_fd(&p->address, fd)) {
- p->fd = fdset_remove(fds, fd);
- s->deserialized_state = SOCKET_LISTENING;
- break;
- }
- }
- }
-
- return 0;
-}
-
-_pure_ static UnitActiveState socket_active_state(Unit *u) {
- assert(u);
-
- return state_translation_table[SOCKET(u)->state];
-}
-
-_pure_ static const char *socket_sub_state_to_string(Unit *u) {
- assert(u);
-
- return socket_state_to_string(SOCKET(u)->state);
-}
-
-const char* socket_port_type_to_string(SocketPort *p) {
-
- assert(p);
-
- switch (p->type) {
-
- case SOCKET_SOCKET:
-
- switch (p->address.type) {
-
- case SOCK_STREAM:
- return "Stream";
-
- case SOCK_DGRAM:
- return "Datagram";
-
- case SOCK_SEQPACKET:
- return "SequentialPacket";
-
- case SOCK_RAW:
- if (socket_address_family(&p->address) == AF_NETLINK)
- return "Netlink";
-
- default:
- return NULL;
- }
-
- case SOCKET_SPECIAL:
- return "Special";
-
- case SOCKET_MQUEUE:
- return "MessageQueue";
-
- case SOCKET_FIFO:
- return "FIFO";
-
- default:
- return NULL;
- }
-}
-
-_pure_ static bool socket_check_gc(Unit *u) {
- Socket *s = SOCKET(u);
-
- assert(u);
-
- return s->n_connections > 0;
-}
-
-static int socket_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) {
- SocketPort *p = userdata;
- int cfd = -1;
-
- assert(p);
- assert(fd >= 0);
-
- if (p->socket->state != SOCKET_LISTENING)
- return 0;
-
- log_unit_debug(UNIT(p->socket)->id, "Incoming traffic on %s", UNIT(p->socket)->id);
-
- if (revents != EPOLLIN) {
-
- if (revents & EPOLLHUP)
- log_unit_error(UNIT(p->socket)->id, "%s: Got POLLHUP on a listening socket. The service probably invoked shutdown() on it, and should better not do that.",
- UNIT(p->socket)->id);
- else
- log_unit_error(UNIT(p->socket)->id, "%s: Got unexpected poll event (0x%x) on socket.",
- UNIT(p->socket)->id, revents);
-
- goto fail;
- }
-
- if (p->socket->accept &&
- p->type == SOCKET_SOCKET &&
- socket_address_can_accept(&p->address)) {
-
- for (;;) {
-
- cfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK);
- if (cfd < 0) {
-
- if (errno == EINTR)
- continue;
-
- log_unit_error(UNIT(p->socket)->id,
- "Failed to accept socket: %m");
- goto fail;
- }
-
- break;
- }
-
- socket_apply_socket_options(p->socket, cfd);
- }
-
- socket_enter_running(p->socket, cfd);
- return 0;
-
-fail:
- socket_enter_stop_pre(p->socket, SOCKET_FAILURE_RESOURCES);
- return 0;
-}
-
-static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) {
- Socket *s = SOCKET(u);
- SocketResult f;
-
- assert(s);
- assert(pid >= 0);
-
- if (pid != s->control_pid)
- return;
-
- s->control_pid = 0;
-
- if (is_clean_exit(code, status, NULL))
- f = SOCKET_SUCCESS;
- else if (code == CLD_EXITED)
- f = SOCKET_FAILURE_EXIT_CODE;
- else if (code == CLD_KILLED)
- f = SOCKET_FAILURE_SIGNAL;
- else if (code == CLD_DUMPED)
- f = SOCKET_FAILURE_CORE_DUMP;
- else
- assert_not_reached("Unknown sigchld code");
-
- if (s->control_command) {
- exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
-
- if (s->control_command->ignore)
- f = SOCKET_SUCCESS;
- }
-
- log_unit_full(u->id,
- f == SOCKET_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
- "%s control process exited, code=%s status=%i",
- u->id, sigchld_code_to_string(code), status);
-
- if (f != SOCKET_SUCCESS)
- s->result = f;
-
- if (s->control_command &&
- s->control_command->command_next &&
- f == SOCKET_SUCCESS) {
-
- log_unit_debug(u->id,
- "%s running next command for state %s",
- u->id, socket_state_to_string(s->state));
- socket_run_next(s);
- } else {
- s->control_command = NULL;
- s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID;
-
- /* No further commands for this step, so let's figure
- * out what to do next */
-
- log_unit_debug(u->id,
- "%s got final SIGCHLD for state %s",
- u->id, socket_state_to_string(s->state));
-
- switch (s->state) {
-
- case SOCKET_START_PRE:
- if (f == SOCKET_SUCCESS)
- socket_enter_start_chown(s);
- else
- socket_enter_signal(s, SOCKET_FINAL_SIGTERM, f);
- break;
-
- case SOCKET_START_CHOWN:
- if (f == SOCKET_SUCCESS)
- socket_enter_start_post(s);
- else
- socket_enter_stop_pre(s, f);
- break;
-
- case SOCKET_START_POST:
- if (f == SOCKET_SUCCESS)
- socket_enter_listening(s);
- else
- socket_enter_stop_pre(s, f);
- break;
-
- case SOCKET_STOP_PRE:
- case SOCKET_STOP_PRE_SIGTERM:
- case SOCKET_STOP_PRE_SIGKILL:
- socket_enter_stop_post(s, f);
- break;
-
- case SOCKET_STOP_POST:
- case SOCKET_FINAL_SIGTERM:
- case SOCKET_FINAL_SIGKILL:
- socket_enter_dead(s, f);
- break;
-
- default:
- assert_not_reached("Uh, control process died at wrong time.");
- }
- }
-
- /* Notify clients about changed exit status */
- unit_add_to_dbus_queue(u);
-}
-
-static int socket_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) {
- Socket *s = SOCKET(userdata);
-
- assert(s);
- assert(s->timer_event_source == source);
-
- switch (s->state) {
-
- case SOCKET_START_PRE:
- log_unit_warning(UNIT(s)->id, "%s starting timed out. Terminating.", UNIT(s)->id);
- socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_TIMEOUT);
- break;
-
- case SOCKET_START_CHOWN:
- case SOCKET_START_POST:
- log_unit_warning(UNIT(s)->id, "%s starting timed out. Stopping.", UNIT(s)->id);
- socket_enter_stop_pre(s, SOCKET_FAILURE_TIMEOUT);
- break;
-
- case SOCKET_STOP_PRE:
- log_unit_warning(UNIT(s)->id, "%s stopping timed out. Terminating.", UNIT(s)->id);
- socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, SOCKET_FAILURE_TIMEOUT);
- break;
-
- case SOCKET_STOP_PRE_SIGTERM:
- if (s->kill_context.send_sigkill) {
- log_unit_warning(UNIT(s)->id, "%s stopping timed out. Killing.", UNIT(s)->id);
- socket_enter_signal(s, SOCKET_STOP_PRE_SIGKILL, SOCKET_FAILURE_TIMEOUT);
- } else {
- log_unit_warning(UNIT(s)->id, "%s stopping timed out. Skipping SIGKILL. Ignoring.", UNIT(s)->id);
- socket_enter_stop_post(s, SOCKET_FAILURE_TIMEOUT);
- }
- break;
-
- case SOCKET_STOP_PRE_SIGKILL:
- log_unit_warning(UNIT(s)->id, "%s still around after SIGKILL. Ignoring.", UNIT(s)->id);
- socket_enter_stop_post(s, SOCKET_FAILURE_TIMEOUT);
- break;
-
- case SOCKET_STOP_POST:
- log_unit_warning(UNIT(s)->id, "%s stopping timed out (2). Terminating.", UNIT(s)->id);
- socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_TIMEOUT);
- break;
-
- case SOCKET_FINAL_SIGTERM:
- if (s->kill_context.send_sigkill) {
- log_unit_warning(UNIT(s)->id, "%s stopping timed out (2). Killing.", UNIT(s)->id);
- socket_enter_signal(s, SOCKET_FINAL_SIGKILL, SOCKET_FAILURE_TIMEOUT);
- } else {
- log_unit_warning(UNIT(s)->id, "%s stopping timed out (2). Skipping SIGKILL. Ignoring.", UNIT(s)->id);
- socket_enter_dead(s, SOCKET_FAILURE_TIMEOUT);
- }
- break;
-
- case SOCKET_FINAL_SIGKILL:
- log_unit_warning(UNIT(s)->id, "%s still around after SIGKILL (2). Entering failed mode.", UNIT(s)->id);
- socket_enter_dead(s, SOCKET_FAILURE_TIMEOUT);
- break;
-
- default:
- assert_not_reached("Timeout at wrong time.");
- }
-
- return 0;
-}
-
-int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds) {
- int *rfds;
- unsigned rn_fds, k;
- SocketPort *p;
-
- assert(s);
- assert(fds);
- assert(n_fds);
-
- /* Called from the service code for requesting our fds */
-
- rn_fds = 0;
- LIST_FOREACH(port, p, s->ports)
- if (p->fd >= 0)
- rn_fds++;
-
- if (rn_fds <= 0) {
- *fds = NULL;
- *n_fds = 0;
- return 0;
- }
-
- if (!(rfds = new(int, rn_fds)))
- return -ENOMEM;
-
- k = 0;
- LIST_FOREACH(port, p, s->ports)
- if (p->fd >= 0)
- rfds[k++] = p->fd;
-
- assert(k == rn_fds);
-
- *fds = rfds;
- *n_fds = rn_fds;
-
- return 0;
-}
-
-static void socket_reset_failed(Unit *u) {
- Socket *s = SOCKET(u);
-
- assert(s);
-
- if (s->state == SOCKET_FAILED)
- socket_set_state(s, SOCKET_DEAD);
-
- s->result = SOCKET_SUCCESS;
-}
-
-static void socket_notify_service_dead(Socket *s, bool failed_permanent) {
- assert(s);
-
- /* The service is dead. Dang!
- *
- * This is strictly for one-instance-for-all-connections
- * services. */
-
- if (s->state == SOCKET_RUNNING) {
- log_unit_debug(UNIT(s)->id, "%s got notified about service death (failed permanently: %s)", UNIT(s)->id, yes_no(failed_permanent));
- if (failed_permanent)
- socket_enter_stop_pre(s, SOCKET_FAILURE_SERVICE_FAILED_PERMANENT);
- else
- socket_enter_listening(s);
- }
-}
-
-void socket_connection_unref(Socket *s) {
- assert(s);
-
- /* The service is dead. Yay!
- *
- * This is strictly for one-instance-per-connection
- * services. */
-
- assert(s->n_connections > 0);
- s->n_connections--;
-
- log_unit_debug(UNIT(s)->id, "%s: One connection closed, %u left.", UNIT(s)->id, s->n_connections);
-}
-
-static void socket_trigger_notify(Unit *u, Unit *other) {
- Socket *s = SOCKET(u);
- Service *se;
-
- assert(u);
- assert(other);
-
- /* Don't propagate state changes from the service if we are
- already down or accepting connections */
- if ((s->state != SOCKET_RUNNING &&
- s->state != SOCKET_LISTENING) ||
- s->accept)
- return;
-
- if (other->load_state != UNIT_LOADED ||
- other->type != UNIT_SERVICE)
- return;
-
- se = SERVICE(other);
-
- if (se->state == SERVICE_FAILED)
- socket_notify_service_dead(s, se->result == SERVICE_FAILURE_START_LIMIT);
-
- if (se->state == SERVICE_DEAD ||
- se->state == SERVICE_FINAL_SIGTERM ||
- se->state == SERVICE_FINAL_SIGKILL ||
- se->state == SERVICE_AUTO_RESTART)
- socket_notify_service_dead(s, false);
-
- if (se->state == SERVICE_RUNNING)
- socket_set_state(s, SOCKET_RUNNING);
-}
-
-static int socket_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) {
- return unit_kill_common(u, who, signo, -1, SOCKET(u)->control_pid, error);
-}
-
-static int socket_get_timeout(Unit *u, uint64_t *timeout) {
- Socket *s = SOCKET(u);
- int r;
-
- if (!s->timer_event_source)
- return 0;
-
- r = sd_event_source_get_time(s->timer_event_source, timeout);
- if (r < 0)
- return r;
-
- return 1;
-}
-
-static const char* const socket_state_table[_SOCKET_STATE_MAX] = {
- [SOCKET_DEAD] = "dead",
- [SOCKET_START_PRE] = "start-pre",
- [SOCKET_START_CHOWN] = "start-chown",
- [SOCKET_START_POST] = "start-post",
- [SOCKET_LISTENING] = "listening",
- [SOCKET_RUNNING] = "running",
- [SOCKET_STOP_PRE] = "stop-pre",
- [SOCKET_STOP_PRE_SIGTERM] = "stop-pre-sigterm",
- [SOCKET_STOP_PRE_SIGKILL] = "stop-pre-sigkill",
- [SOCKET_STOP_POST] = "stop-post",
- [SOCKET_FINAL_SIGTERM] = "final-sigterm",
- [SOCKET_FINAL_SIGKILL] = "final-sigkill",
- [SOCKET_FAILED] = "failed"
-};
-
-DEFINE_STRING_TABLE_LOOKUP(socket_state, SocketState);
-
-static const char* const socket_exec_command_table[_SOCKET_EXEC_COMMAND_MAX] = {
- [SOCKET_EXEC_START_PRE] = "StartPre",
- [SOCKET_EXEC_START_CHOWN] = "StartChown",
- [SOCKET_EXEC_START_POST] = "StartPost",
- [SOCKET_EXEC_STOP_PRE] = "StopPre",
- [SOCKET_EXEC_STOP_POST] = "StopPost"
-};
-
-DEFINE_STRING_TABLE_LOOKUP(socket_exec_command, SocketExecCommand);
-
-static const char* const socket_result_table[_SOCKET_RESULT_MAX] = {
- [SOCKET_SUCCESS] = "success",
- [SOCKET_FAILURE_RESOURCES] = "resources",
- [SOCKET_FAILURE_TIMEOUT] = "timeout",
- [SOCKET_FAILURE_EXIT_CODE] = "exit-code",
- [SOCKET_FAILURE_SIGNAL] = "signal",
- [SOCKET_FAILURE_CORE_DUMP] = "core-dump",
- [SOCKET_FAILURE_SERVICE_FAILED_PERMANENT] = "service-failed-permanent"
-};
-
-DEFINE_STRING_TABLE_LOOKUP(socket_result, SocketResult);
-
-const UnitVTable socket_vtable = {
- .object_size = sizeof(Socket),
- .exec_context_offset = offsetof(Socket, exec_context),
- .cgroup_context_offset = offsetof(Socket, cgroup_context),
- .kill_context_offset = offsetof(Socket, kill_context),
- .exec_runtime_offset = offsetof(Socket, exec_runtime),
-
- .sections =
- "Unit\0"
- "Socket\0"
- "Install\0",
- .private_section = "Socket",
-
- .init = socket_init,
- .done = socket_done,
- .load = socket_load,
-
- .coldplug = socket_coldplug,
-
- .dump = socket_dump,
-
- .start = socket_start,
- .stop = socket_stop,
-
- .kill = socket_kill,
-
- .get_timeout = socket_get_timeout,
-
- .serialize = socket_serialize,
- .deserialize_item = socket_deserialize_item,
- .distribute_fds = socket_distribute_fds,
-
- .active_state = socket_active_state,
- .sub_state_to_string = socket_sub_state_to_string,
-
- .check_gc = socket_check_gc,
-
- .sigchld_event = socket_sigchld_event,
-
- .trigger_notify = socket_trigger_notify,
-
- .reset_failed = socket_reset_failed,
-
- .bus_interface = "org.freedesktop.systemd1.Socket",
- .bus_vtable = bus_socket_vtable,
- .bus_set_property = bus_socket_set_property,
- .bus_commit_properties = bus_socket_commit_properties,
-
- .status_message_formats = {
- /*.starting_stopping = {
- [0] = "Starting socket %s...",
- [1] = "Stopping socket %s...",
- },*/
- .finished_start_job = {
- [JOB_DONE] = "Listening on %s.",
- [JOB_FAILED] = "Failed to listen on %s.",
- [JOB_DEPENDENCY] = "Dependency failed for %s.",
- [JOB_TIMEOUT] = "Timed out starting %s.",
- },
- .finished_stop_job = {
- [JOB_DONE] = "Closed %s.",
- [JOB_FAILED] = "Failed stopping %s.",
- [JOB_TIMEOUT] = "Timed out stopping %s.",
- },
- },
-};
~ianmdlvl / elogind.git / blobdiff