X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fcore%2Fsocket.c;h=b2a3e954cbfd61a91fdb2bf3c281743f1f80d826;hp=60ea3cb25cfb4b794c1444829395ae9e4b893acf;hb=03e334a1c7dc8c20c38902aa039440763acc9b17;hpb=88f3e0c91f08c65a479e1aa09f171550b744d829 diff --git a/src/core/socket.c b/src/core/socket.c index 60ea3cb25..b2a3e954c 100644 --- a/src/core/socket.c +++ b/src/core/socket.c @@ -27,24 +27,32 @@ #include #include #include +#include #include +#ifdef HAVE_XATTR +#include +#endif -#include "unit.h" -#include "socket.h" -#include "netinet/tcp.h" +#include "sd-event.h" #include "log.h" #include "load-dropin.h" #include "load-fragment.h" #include "strv.h" #include "mkdir.h" +#include "path-util.h" #include "unit-name.h" -#include "dbus-socket.h" +#include "unit-printf.h" #include "missing.h" #include "special.h" -#include "bus-errors.h" #include "label.h" #include "exit-status.h" #include "def.h" +#include "smack-util.h" +#include "bus-util.h" +#include "bus-error.h" +#include "dbus-socket.h" +#include "unit.h" +#include "socket.h" static const UnitActiveState state_translation_table[_SOCKET_STATE_MAX] = { [SOCKET_DEAD] = UNIT_INACTIVE, @@ -61,6 +69,9 @@ static const UnitActiveState state_translation_table[_SOCKET_STATE_MAX] = { [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); @@ -68,7 +79,7 @@ static void socket_init(Unit *u) { assert(u->load_state == UNIT_STUB); s->backlog = SOMAXCONN; - s->timeout_usec = DEFAULT_TIMEOUT_USEC; + s->timeout_usec = u->manager->default_timeout_start_usec; s->directory_mode = 0755; s->socket_mode = 0666; @@ -82,6 +93,10 @@ static void socket_init(Unit *u) { exec_context_init(&s->exec_context); s->exec_context.std_output = u->manager->default_std_output; s->exec_context.std_error = u->manager->default_std_error; + kill_context_init(&s->kill_context); + cgroup_context_init(&s->cgroup_context); + + unit_cgroup_context_init_defaults(u, &s->cgroup_context); s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID; } @@ -96,25 +111,32 @@ static void socket_unwatch_control_pid(Socket *s) { s->control_pid = 0; } -static void socket_done(Unit *u) { - Socket *s = SOCKET(u); +void socket_free_ports(Socket *s) { SocketPort *p; assert(s); while ((p = s->ports)) { - LIST_REMOVE(SocketPort, port, s->ports, p); + LIST_REMOVE(port, s->ports, p); - if (p->fd >= 0) { - unit_unwatch_fd(UNIT(s), &p->fd_watch); - close_nointr_nofail(p->fd); - } + 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); + + cgroup_context_done(&s->cgroup_context); exec_context_done(&s->exec_context); + s->exec_runtime = exec_runtime_unref(s->exec_runtime); exec_command_free_array(s->exec_command, _SOCKET_EXEC_COMMAND_MAX); s->control_command = NULL; @@ -128,11 +150,37 @@ static void socket_done(Unit *u) { free(s->bind_to_device); s->bind_to_device = NULL; - unit_unwatch_timer(u, &s->timer_watch); + free(s->smack); + free(s->smack_ip_in); + free(s->smack_ip_out); + + 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_monotonic(UNIT(s)->manager->event, &s->timer_event_source, now(CLOCK_MONOTONIC) + s->timeout_usec, 0, socket_dispatch_timer, s); } static int socket_instantiate_service(Socket *s) { - char *prefix, *name; + _cleanup_free_ char *prefix = NULL; + _cleanup_free_ char *name = NULL; int r; Unit *u; @@ -148,23 +196,19 @@ static int socket_instantiate_service(Socket *s) { assert(s->accept); - if (!(prefix = unit_name_to_prefix(UNIT(s)->id))) + prefix = unit_name_to_prefix(UNIT(s)->id); + if (!prefix) return -ENOMEM; - r = asprintf(&name, "%s@%u.service", prefix, s->n_accepted); - free(prefix); - - if (r < 0) + if (asprintf(&name, "%s@%u.service", prefix, s->n_accepted) < 0) return -ENOMEM; r = manager_load_unit(UNIT(s)->manager, name, NULL, NULL, &u); - free(name); - if (r < 0) return r; #ifdef HAVE_SYSV_COMPAT - if (SERVICE(u)->sysv_path) { + if (SERVICE(u)->is_sysv) { log_error("Using SysV services for socket activation is not supported. Refusing."); return -ENOENT; } @@ -196,133 +240,158 @@ static bool have_non_accept_socket(Socket *s) { return false; } -static int socket_verify(Socket *s) { - assert(s); - - if (UNIT(s)->load_state != UNIT_LOADED) - return 0; +static int socket_add_mount_links(Socket *s) { + SocketPort *p; + int r; - if (!s->ports) { - log_error("%s lacks Listen setting. Refusing.", UNIT(s)->id); - return -EINVAL; - } + assert(s); - if (s->accept && have_non_accept_socket(s)) { - log_error("%s configured for accepting sockets, but sockets are non-accepting. Refusing.", UNIT(s)->id); - return -EINVAL; - } + LIST_FOREACH(port, p, s->ports) { + const char *path = NULL; - if (s->accept && s->max_connections <= 0) { - log_error("%s's MaxConnection setting too small. Refusing.", UNIT(s)->id); - return -EINVAL; - } + 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 (s->accept && UNIT_DEREF(s->service)) { - log_error("Explicit service configuration for accepting sockets not supported on %s. Refusing.", UNIT(s)->id); - return -EINVAL; - } + if (!path) + continue; - if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) { - log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id); - return -EINVAL; + r = unit_require_mounts_for(UNIT(s), path); + if (r < 0) + return r; } return 0; } -static bool socket_needs_mount(Socket *s, const char *prefix) { - SocketPort *p; +static int socket_add_device_link(Socket *s) { + char *t; assert(s); - LIST_FOREACH(port, p, s->ports) { - - if (p->type == SOCKET_SOCKET) { - if (socket_address_needs_mount(&p->address, prefix)) - return true; - } else if (p->type == SOCKET_FIFO || p->type == SOCKET_SPECIAL) { - if (path_startswith(p->path, prefix)) - return true; - } - } + if (!s->bind_to_device || streq(s->bind_to_device, "lo")) + return 0; - return false; + t = strappenda("/sys/subsystem/net/devices/", s->bind_to_device); + return unit_add_node_link(UNIT(s), t, false); } -int socket_add_one_mount_link(Socket *s, Mount *m) { +static int socket_add_default_dependencies(Socket *s) { int r; - assert(s); - assert(m); - - if (UNIT(s)->load_state != UNIT_LOADED || - UNIT(m)->load_state != UNIT_LOADED) - return 0; - if (!socket_needs_mount(s, m->where)) - return 0; - - if ((r = unit_add_two_dependencies(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, UNIT(m), true)) < 0) + r = unit_add_dependency_by_name(UNIT(s), UNIT_BEFORE, SPECIAL_SOCKETS_TARGET, NULL, true); + if (r < 0) return r; - return 0; -} + 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; + } -static int socket_add_mount_links(Socket *s) { - Unit *other; - int 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); - LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_MOUNT]) - if ((r = socket_add_one_mount_link(s, MOUNT(other))) < 0) - return r; + for (i = 0; i < _SOCKET_EXEC_COMMAND_MAX; i++) + if (s->exec_command[i]) + return true; - return 0; + return false; } -static int socket_add_device_link(Socket *s) { - char *t; +static int socket_add_extras(Socket *s) { + Unit *u = UNIT(s); int r; assert(s); - if (!s->bind_to_device) - return 0; + if (have_non_accept_socket(s)) { - if (asprintf(&t, "/sys/subsystem/net/devices/%s", s->bind_to_device) < 0) - return -ENOMEM; + if (!UNIT_DEREF(s->service)) { + Unit *x; - r = unit_add_node_link(UNIT(s), t, false); - free(t); + r = unit_load_related_unit(u, ".service", &x); + if (r < 0) + return r; - return r; -} + unit_ref_set(&s->service, x); + } -static int socket_add_default_dependencies(Socket *s) { - int r; - assert(s); + r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, UNIT_DEREF(s->service), true); + if (r < 0) + return r; + } - if (UNIT(s)->manager->running_as == MANAGER_SYSTEM) { - if ((r = unit_add_dependency_by_name(UNIT(s), UNIT_BEFORE, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0) + r = socket_add_mount_links(s); + if (r < 0) + return r; + + r = socket_add_device_link(s); + if (r < 0) + return r; + + r = unit_exec_context_patch_defaults(u, &s->exec_context); + if (r < 0) + return r; + + if (socket_has_exec(s)) { + r = unit_add_exec_dependencies(u, &s->exec_context); + if (r < 0) return r; - if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true)) < 0) + r = unit_add_default_slice(u); + if (r < 0) return r; } - return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); + if (u->default_dependencies) { + r = socket_add_default_dependencies(s); + if (r < 0) + return r; + } + + return 0; } -static bool socket_has_exec(Socket *s) { - unsigned i; +static int socket_verify(Socket *s) { assert(s); - for (i = 0; i < _SOCKET_EXEC_COMMAND_MAX; i++) - if (s->exec_command[i]) - return true; + if (UNIT(s)->load_state != UNIT_LOADED) + return 0; - return false; + if (!s->ports) { + log_error_unit(UNIT(s)->id, "%s lacks Listen setting. Refusing.", UNIT(s)->id); + return -EINVAL; + } + + if (s->accept && have_non_accept_socket(s)) { + log_error_unit(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_error_unit(UNIT(s)->id, "%s's MaxConnection setting too small. Refusing.", UNIT(s)->id); + return -EINVAL; + } + + if (s->accept && UNIT_DEREF(s->service)) { + log_error_unit(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_error_unit(UNIT(s)->id, "%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id); + return -EINVAL; + } + + return 0; } static int socket_load(Unit *u) { @@ -332,51 +401,21 @@ static int socket_load(Unit *u) { assert(u); assert(u->load_state == UNIT_STUB); - if ((r = unit_load_fragment_and_dropin(u)) < 0) + r = unit_load_fragment_and_dropin(u); + if (r < 0) return r; - /* This is a new unit? Then let's add in some extras */ if (u->load_state == UNIT_LOADED) { - - 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; - } - - if ((r = socket_add_mount_links(s)) < 0) - return r; - - if ((r = socket_add_device_link(s)) < 0) - return r; - - if (socket_has_exec(s)) - if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0) - return r; - - if ((r = unit_add_default_cgroups(u)) < 0) + /* This is a new unit? Then let's add in some extras */ + r = socket_add_extras(s); + if (r < 0) return r; - - if (UNIT(s)->default_dependencies) - if ((r = socket_add_default_dependencies(s)) < 0) - return r; } return socket_verify(s); } -static const char* listen_lookup(int family, int type) { +_const_ static const char* listen_lookup(int family, int type) { if (family == AF_NETLINK) return "ListenNetlink"; @@ -393,18 +432,15 @@ static const char* listen_lookup(int family, int type) { } static void socket_dump(Unit *u, FILE *f, const char *prefix) { - SocketExecCommand c; Socket *s = SOCKET(u); SocketPort *p; const char *prefix2; - char *p2; assert(s); assert(f); - p2 = strappend(prefix, "\t"); - prefix2 = p2 ? p2 : prefix; + prefix2 = strappenda(prefix, "\t"); fprintf(f, "%sSocket State: %s\n" @@ -498,6 +534,26 @@ static void socket_dump(Unit *u, FILE *f, const char *prefix) { "%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); + LIST_FOREACH(port, p, s->ports) { if (p->type == SOCKET_SOCKET) { @@ -521,6 +577,7 @@ static void socket_dump(Unit *u, FILE *f, const char *prefix) { } 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]) @@ -531,20 +588,12 @@ static void socket_dump(Unit *u, FILE *f, const char *prefix) { exec_command_dump_list(s->exec_command[c], f, prefix2); } - - 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; + union sockaddr_union local, remote; assert(fd >= 0); assert(instance); @@ -577,7 +626,7 @@ static int instance_from_socket(int fd, unsigned nr, char **instance) { } case AF_INET6: { - static const char ipv4_prefix[] = { + static const unsigned char ipv4_prefix[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF }; @@ -613,10 +662,11 @@ static int instance_from_socket(int fd, unsigned nr, char **instance) { case AF_UNIX: { struct ucred ucred; + int k; - l = sizeof(ucred); - if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0) - return -errno; + k = getpeercred(fd, &ucred); + if (k < 0) + return k; if (asprintf(&r, "%u-%lu-%lu", @@ -642,11 +692,13 @@ static void socket_close_fds(Socket *s) { assert(s); LIST_FOREACH(port, p, s->ports) { + + p->event_source = sd_event_source_unref(p->event_source); + if (p->fd < 0) continue; - unit_unwatch_fd(UNIT(s), &p->fd_watch); - close_nointr_nofail(p->fd); + p->fd = safe_close(p->fd); /* One little note: we should never delete any sockets * in the file system here! After all some other @@ -655,8 +707,6 @@ static void socket_close_fds(Socket *s) { * we delete sockets in the file system before we * create a new one, not after we stopped using * one! */ - - p->fd = -1; } } @@ -667,30 +717,30 @@ static void socket_apply_socket_options(Socket *s, int fd) { if (s->keep_alive) { int b = s->keep_alive; if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &b, sizeof(b)) < 0) - log_warning("SO_KEEPALIVE failed: %m"); + log_warning_unit(UNIT(s)->id, "SO_KEEPALIVE failed: %m"); } if (s->broadcast) { int one = 1; if (setsockopt(fd, SOL_SOCKET, SO_BROADCAST, &one, sizeof(one)) < 0) - log_warning("SO_BROADCAST failed: %m"); + log_warning_unit(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_warning("SO_PASSCRED failed: %m"); + log_warning_unit(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_warning("SO_PASSSEC failed: %m"); + log_warning_unit(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_warning("SO_PRIORITY failed: %m"); + log_warning_unit(UNIT(s)->id, "SO_PRIORITY failed: %m"); if (s->receive_buffer > 0) { int value = (int) s->receive_buffer; @@ -699,23 +749,23 @@ static void socket_apply_socket_options(Socket *s, int fd) { if (setsockopt(fd, SOL_SOCKET, SO_RCVBUFFORCE, &value, sizeof(value)) < 0) if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &value, sizeof(value)) < 0) - log_warning("SO_RCVBUF failed: %m"); + log_warning_unit(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_warning("SO_SNDBUF failed: %m"); + log_warning_unit(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_warning("SO_MARK failed: %m"); + log_warning_unit(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_warning("IP_TOS failed: %m"); + log_warning_unit(UNIT(s)->id, "IP_TOS failed: %m"); if (s->ip_ttl >= 0) { int r, x; @@ -730,12 +780,27 @@ static void socket_apply_socket_options(Socket *s, int fd) { } if (r < 0 && x < 0) - log_warning("IP_TTL/IPV6_UNICAST_HOPS failed: %m"); + log_warning_unit(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_warning("TCP_CONGESTION failed: %m"); + log_warning_unit(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_warning_unit(UNIT(s)->id, "SO_REUSEPORT failed: %m"); + } + + if (s->smack_ip_in) + if (smack_label_ip_in_fd(fd, s->smack_ip_in) < 0) + log_error_unit(UNIT(s)->id, "smack_label_ip_in_fd: %m"); + + if (s->smack_ip_out) + if (smack_label_ip_out_fd(fd, s->smack_ip_out) < 0) + log_error_unit(UNIT(s)->id, "smack_label_ip_out_fd: %m"); } static void socket_apply_fifo_options(Socket *s, int fd) { @@ -744,7 +809,12 @@ static void socket_apply_fifo_options(Socket *s, int fd) { if (s->pipe_size > 0) if (fcntl(fd, F_SETPIPE_SZ, s->pipe_size) < 0) - log_warning("F_SETPIPE_SZ: %m"); + log_warning_unit(UNIT(s)->id, + "F_SETPIPE_SZ: %m"); + + if (s->smack) + if (smack_label_fd(fd, s->smack) < 0) + log_error_unit(UNIT(s)->id, "smack_label_fd: %m"); } static int fifo_address_create( @@ -760,7 +830,7 @@ static int fifo_address_create( assert(path); assert(_fd); - mkdir_parents(path, directory_mode); + mkdir_parents_label(path, directory_mode); r = label_context_set(path, S_IFIFO); if (r < 0) @@ -806,9 +876,7 @@ static int fifo_address_create( fail: label_context_clear(); - - if (fd >= 0) - close_nointr_nofail(fd); + safe_close(fd); return r; } @@ -843,8 +911,7 @@ static int special_address_create( return 0; fail: - if (fd >= 0) - close_nointr_nofail(fd); + safe_close(fd); return r; } @@ -903,9 +970,7 @@ static int mq_address_create( return 0; fail: - if (fd >= 0) - close_nointr_nofail(fd); - + safe_close(fd); return r; } @@ -929,7 +994,7 @@ static int socket_open_fds(Socket *s) { if ((r = socket_instantiate_service(s)) < 0) return r; - if (UNIT_DEREF(s->service) && + if (UNIT_ISSET(s->service) && SERVICE(UNIT_DEREF(s->service))->exec_command[SERVICE_EXEC_START]) { r = label_get_create_label_from_exe(SERVICE(UNIT_DEREF(s->service))->exec_command[SERVICE_EXEC_START]->path, &label); @@ -942,46 +1007,51 @@ static int socket_open_fds(Socket *s) { know_label = true; } - if ((r = socket_address_listen( - &p->address, - s->backlog, - s->bind_ipv6_only, - s->bind_to_device, - s->free_bind, - s->transparent, - s->directory_mode, - s->socket_mode, - label, - &p->fd)) < 0) + 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); } else if (p->type == SOCKET_SPECIAL) { - if ((r = special_address_create( - p->path, - &p->fd)) < 0) + r = special_address_create( + p->path, + &p->fd); + if (r < 0) goto rollback; } else if (p->type == SOCKET_FIFO) { - if ((r = fifo_address_create( - p->path, - s->directory_mode, - s->socket_mode, - &p->fd)) < 0) + 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); } else if (p->type == SOCKET_MQUEUE) { - if ((r = mq_address_create( - p->path, - s->socket_mode, - s->mq_maxmsg, - s->mq_msgsize, - &p->fd)) < 0) + 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"); @@ -998,6 +1068,7 @@ rollback: static void socket_unwatch_fds(Socket *s) { SocketPort *p; + int r; assert(s); @@ -1005,7 +1076,11 @@ static void socket_unwatch_fds(Socket *s) { if (p->fd < 0) continue; - unit_unwatch_fd(UNIT(s), &p->fd_watch); + if (p->event_source) { + r = sd_event_source_set_enabled(p->event_source, SD_EVENT_OFF); + if (r < 0) + log_debug_unit(UNIT(s)->id, "Failed to disable event source."); + } } } @@ -1019,13 +1094,15 @@ static int socket_watch_fds(Socket *s) { if (p->fd < 0) continue; - p->fd_watch.socket_accept = - s->accept && - p->type == SOCKET_SOCKET && - socket_address_can_accept(&p->address); + 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 = unit_watch_fd(UNIT(s), p->fd, EPOLLIN, &p->fd_watch)) < 0) + if (r < 0) { + log_warning_unit(UNIT(s)->id, "Failed to watch listening fds: %s", strerror(-r)); goto fail; + } } return 0; @@ -1050,7 +1127,8 @@ static void socket_set_state(Socket *s, SocketState state) { state != SOCKET_STOP_POST && state != SOCKET_FINAL_SIGTERM && state != SOCKET_FINAL_SIGKILL) { - unit_unwatch_timer(UNIT(s), &s->timer_watch); + + 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; @@ -1068,10 +1146,8 @@ static void socket_set_state(Socket *s, SocketState state) { socket_close_fds(s); if (state != old_state) - log_debug("%s changed %s -> %s", - UNIT(s)->id, - socket_state_to_string(old_state), - socket_state_to_string(state)); + log_debug_unit(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); } @@ -1083,43 +1159,48 @@ static int socket_coldplug(Unit *u) { assert(s); assert(s->state == SOCKET_DEAD); - if (s->deserialized_state != s->state) { - - if (s->deserialized_state == SOCKET_START_PRE || - s->deserialized_state == SOCKET_START_POST || - s->deserialized_state == SOCKET_STOP_PRE || - s->deserialized_state == SOCKET_STOP_PRE_SIGTERM || - s->deserialized_state == SOCKET_STOP_PRE_SIGKILL || - s->deserialized_state == SOCKET_STOP_POST || - s->deserialized_state == SOCKET_FINAL_SIGTERM || - s->deserialized_state == SOCKET_FINAL_SIGKILL) { + if (s->deserialized_state == s->state) + return 0; - if (s->control_pid <= 0) - return -EBADMSG; + if (s->deserialized_state == SOCKET_START_PRE || + s->deserialized_state == SOCKET_START_POST || + s->deserialized_state == SOCKET_STOP_PRE || + s->deserialized_state == SOCKET_STOP_PRE_SIGTERM || + s->deserialized_state == SOCKET_STOP_PRE_SIGKILL || + s->deserialized_state == SOCKET_STOP_POST || + s->deserialized_state == SOCKET_FINAL_SIGTERM || + s->deserialized_state == SOCKET_FINAL_SIGKILL) { - if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0) - return r; + if (s->control_pid <= 0) + return -EBADMSG; - if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) - return r; - } + r = unit_watch_pid(UNIT(s), s->control_pid); + if (r < 0) + return r; - if (s->deserialized_state == SOCKET_START_POST || - s->deserialized_state == SOCKET_LISTENING || - s->deserialized_state == SOCKET_RUNNING || - s->deserialized_state == SOCKET_STOP_PRE || - s->deserialized_state == SOCKET_STOP_PRE_SIGTERM || - s->deserialized_state == SOCKET_STOP_PRE_SIGKILL) - if ((r = socket_open_fds(s)) < 0) - return r; + r = socket_arm_timer(s); + if (r < 0) + return r; + } - if (s->deserialized_state == SOCKET_LISTENING) - if ((r = socket_watch_fds(s)) < 0) - return r; + if (s->deserialized_state == SOCKET_START_POST || + s->deserialized_state == SOCKET_LISTENING || + s->deserialized_state == SOCKET_RUNNING || + s->deserialized_state == SOCKET_STOP_PRE || + s->deserialized_state == SOCKET_STOP_PRE_SIGTERM || + s->deserialized_state == SOCKET_STOP_PRE_SIGKILL) { + r = socket_open_fds(s); + if (r < 0) + return r; + } - socket_set_state(s, s->deserialized_state); + 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; } @@ -1132,13 +1213,19 @@ static int socket_spawn(Socket *s, ExecCommand *c, pid_t *_pid) { assert(c); assert(_pid); - if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) + unit_realize_cgroup(UNIT(s)); + + r = unit_setup_exec_runtime(UNIT(s)); + if (r < 0) + goto fail; + + r = socket_arm_timer(s); + if (r < 0) goto fail; - if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) { - r = -ENOMEM; + r = unit_full_printf_strv(UNIT(s), c->argv, &argv); + if (r < 0) goto fail; - } r = exec_spawn(c, argv, @@ -1149,17 +1236,21 @@ static int socket_spawn(Socket *s, ExecCommand *c, pid_t *_pid) { true, true, UNIT(s)->manager->confirm_spawn, - UNIT(s)->cgroup_bondings, - UNIT(s)->cgroup_attributes, - NULL, + UNIT(s)->manager->cgroup_supported, + UNIT(s)->cgroup_path, + manager_get_runtime_prefix(UNIT(s)->manager), + UNIT(s)->id, + 0, NULL, + s->exec_runtime, &pid); strv_free(argv); if (r < 0) goto fail; - if ((r = unit_watch_pid(UNIT(s), pid)) < 0) + r = unit_watch_pid(UNIT(s), pid); + if (r < 0) /* FIXME: we need to do something here */ goto fail; @@ -1168,7 +1259,7 @@ static int socket_spawn(Socket *s, ExecCommand *c, pid_t *_pid) { return 0; fail: - unit_unwatch_timer(UNIT(s), &s->timer_watch); + s->timer_event_source = sd_event_source_unref(s->timer_event_source); return r; } @@ -1179,6 +1270,11 @@ static void socket_enter_dead(Socket *s, SocketResult f) { 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); } @@ -1206,77 +1302,54 @@ static void socket_enter_stop_post(Socket *s, SocketResult f) { return; fail: - log_warning("%s failed to run 'stop-post' task: %s", UNIT(s)->id, strerror(-r)); + log_warning_unit(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; - Set *pid_set = NULL; - bool wait_for_exit = false; assert(s); if (f != SOCKET_SUCCESS) s->result = f; - if (s->exec_context.kill_mode != KILL_NONE) { - int sig = (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL; - - if (s->control_pid > 0) { - if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH) - - log_warning("Failed to kill control process %li: %m", (long) s->control_pid); - else - wait_for_exit = true; - } - - if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) { - - if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) { - r = -ENOMEM; - goto fail; - } - - /* Exclude the control pid from being killed via the cgroup */ - if (s->control_pid > 0) - if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) - goto fail; - - r = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, sig, true, false, pid_set, NULL); - if (r < 0) { - if (r != -EAGAIN && r != -ESRCH && r != -ENOENT) - log_warning("Failed to kill control group: %s", strerror(-r)); - } else if (r > 0) - wait_for_exit = true; - - set_free(pid_set); - pid_set = NULL; - } - } + r = unit_kill_context( + UNIT(s), + &s->kill_context, + state != SOCKET_STOP_PRE_SIGTERM && state != SOCKET_FINAL_SIGTERM, + -1, + s->control_pid, + false); + if (r < 0) + goto fail; - if (wait_for_exit) { - if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) + 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 || state == SOCKET_STOP_PRE_SIGKILL) + } 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_warning("%s failed to kill processes: %s", UNIT(s)->id, strerror(-r)); + log_warning_unit(UNIT(s)->id, "%s failed to kill processes: %s", UNIT(s)->id, strerror(-r)); 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); - - if (pid_set) - set_free(pid_set); } static void socket_enter_stop_pre(Socket *s, SocketResult f) { @@ -1301,7 +1374,7 @@ static void socket_enter_stop_pre(Socket *s, SocketResult f) { return; fail: - log_warning("%s failed to run 'stop-pre' task: %s", UNIT(s)->id, strerror(-r)); + log_warning_unit(UNIT(s)->id, "%s failed to run 'stop-pre' task: %s", UNIT(s)->id, strerror(-r)); socket_enter_stop_post(s, SOCKET_FAILURE_RESOURCES); } @@ -1311,7 +1384,7 @@ static void socket_enter_listening(Socket *s) { r = socket_watch_fds(s); if (r < 0) { - log_warning("%s failed to watch sockets: %s", UNIT(s)->id, strerror(-r)); + log_warning_unit(UNIT(s)->id, "%s failed to watch sockets: %s", UNIT(s)->id, strerror(-r)); goto fail; } @@ -1328,7 +1401,7 @@ static void socket_enter_start_post(Socket *s) { r = socket_open_fds(s); if (r < 0) { - log_warning("%s failed to listen on sockets: %s", UNIT(s)->id, strerror(-r)); + log_warning_unit(UNIT(s)->id, "%s failed to listen on sockets: %s", UNIT(s)->id, strerror(-r)); goto fail; } @@ -1339,7 +1412,7 @@ static void socket_enter_start_post(Socket *s) { if ((s->control_command = s->exec_command[SOCKET_EXEC_START_POST])) { r = socket_spawn(s, s->control_command, &s->control_pid); if (r < 0) { - log_warning("%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r)); + log_warning_unit(UNIT(s)->id, "%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r)); goto fail; } @@ -1362,7 +1435,8 @@ static void socket_enter_start_pre(Socket *s) { s->control_command_id = SOCKET_EXEC_START_PRE; if ((s->control_command = s->exec_command[SOCKET_EXEC_START_PRE])) { - if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) + r = socket_spawn(s, s->control_command, &s->control_pid); + if (r < 0) goto fail; socket_set_state(s, SOCKET_START_PRE); @@ -1372,31 +1446,38 @@ static void socket_enter_start_pre(Socket *s) { return; fail: - log_warning("%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r)); + log_warning_unit(UNIT(s)->id, "%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r)); 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; - DBusError error; assert(s); - dbus_error_init(&error); /* We don't take connections anymore if we are supposed to * shut down anyway */ - if (unit_pending_inactive(UNIT(s))) { - log_debug("Suppressing connection request on %s since unit stop is scheduled.", UNIT(s)->id); + if (unit_stop_pending(UNIT(s))) { + + log_debug_unit(UNIT(s)->id, "Suppressing connection request on %s since unit stop is scheduled.", UNIT(s)->id); if (cfd >= 0) - close_nointr_nofail(cfd); + 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_warning_unit(UNIT(s)->id, "%s failed to listen on sockets: %s", UNIT(s)->id, strerror(-r)); + socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); + return; + } + r = socket_watch_fds(s); if (r < 0) { - log_warning("%s failed to watch sockets: %s", UNIT(s)->id, strerror(-r)); + log_warning_unit(UNIT(s)->id, "%s failed to watch sockets: %s", UNIT(s)->id, strerror(-r)); socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); } } @@ -1406,13 +1487,13 @@ static void socket_enter_running(Socket *s, int cfd) { if (cfd < 0) { Iterator i; - Unit *u; + Unit *other; bool pending = false; /* If there's already a start pending don't bother to * do anything */ - SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERS], i) - if (unit_pending_active(u)) { + SET_FOREACH(other, UNIT(s)->dependencies[UNIT_TRIGGERS], i) + if (unit_active_or_pending(other)) { pending = true; break; } @@ -1425,12 +1506,12 @@ static void socket_enter_running(Socket *s, int cfd) { socket_set_state(s, SOCKET_RUNNING); } else { - char *prefix, *instance = NULL, *name; + _cleanup_free_ char *prefix = NULL, *instance = NULL, *name = NULL; Service *service; if (s->n_connections >= s->max_connections) { - log_warning("Too many incoming connections (%u)", s->n_connections); - close_nointr_nofail(cfd); + log_warning_unit(UNIT(s)->id, "%s: Too many incoming connections (%u)", UNIT(s)->id, s->n_connections); + safe_close(cfd); return; } @@ -1445,31 +1526,25 @@ static void socket_enter_running(Socket *s, int cfd) { /* ENOTCONN is legitimate if TCP RST was received. * This connection is over, but the socket unit lives on. */ - close_nointr_nofail(cfd); + safe_close(cfd); return; } prefix = unit_name_to_prefix(UNIT(s)->id); if (!prefix) { - free(instance); r = -ENOMEM; goto fail; } name = unit_name_build(prefix, instance, ".service"); - free(prefix); - free(instance); - if (!name) { r = -ENOMEM; goto fail; } r = unit_add_name(UNIT_DEREF(s->service), name); - if (r < 0) { - free(name); + if (r < 0) goto fail; - } service = SERVICE(UNIT_DEREF(s->service)); unit_ref_unset(&s->service); @@ -1478,7 +1553,6 @@ static void socket_enter_running(Socket *s, int cfd) { UNIT(service)->no_gc = false; unit_choose_id(UNIT(service), name); - free(name); r = service_set_socket_fd(service, cfd, s); if (r < 0) @@ -1498,13 +1572,12 @@ static void socket_enter_running(Socket *s, int cfd) { return; fail: - log_warning("%s failed to queue socket startup job: %s", UNIT(s)->id, bus_error(&error, r)); - socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); + log_warning_unit(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)); - if (cfd >= 0) - close_nointr_nofail(cfd); - - dbus_error_free(&error); + socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); + safe_close(cfd); } static void socket_run_next(Socket *s) { @@ -1518,13 +1591,14 @@ static void socket_run_next(Socket *s) { s->control_command = s->control_command->command_next; - if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) + r = socket_spawn(s, s->control_command, &s->control_pid); + if (r < 0) goto fail; return; fail: - log_warning("%s failed to run next task: %s", UNIT(s)->id, strerror(-r)); + log_warning_unit(UNIT(s)->id, "%s failed to run next task: %s", UNIT(s)->id, strerror(-r)); if (s->state == SOCKET_START_POST) socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); @@ -1554,13 +1628,13 @@ static int socket_start(Unit *u) { return 0; /* Cannot run this without the service being around */ - if (UNIT_DEREF(s->service)) { + if (UNIT_ISSET(s->service)) { Service *service; service = SERVICE(UNIT_DEREF(s->service)); if (UNIT(service)->load_state != UNIT_LOADED) { - log_error("Socket service %s not loaded, refusing.", UNIT(service)->id); + log_error_unit(u->id, "Socket service %s not loaded, refusing.", UNIT(service)->id); return -ENOENT; } @@ -1569,13 +1643,14 @@ static int socket_start(Unit *u) { if (service->state != SERVICE_DEAD && service->state != SERVICE_FAILED && service->state != SERVICE_AUTO_RESTART) { - log_error("Socket service %s already active, refusing.", UNIT(service)->id); + log_error_unit(u->id, "Socket service %s already active, refusing.", UNIT(service)->id); return -EBUSY; } #ifdef HAVE_SYSV_COMPAT - if (service->sysv_path) { - log_error("Using SysV services for socket activation is not supported. Refusing."); + if (service->is_sysv) { + log_error_unit(u->id, + "Using SysV services for socket activation is not supported. Refusing."); return -ENOENT; } #endif @@ -1585,6 +1660,7 @@ static int socket_start(Unit *u) { s->result = SOCKET_SUCCESS; socket_enter_start_pre(s); + return 0; } @@ -1641,22 +1717,26 @@ static int socket_serialize(Unit *u, FILE *f, FDSet *fds) { if (p->fd < 0) continue; - if ((copy = fdset_put_dup(fds, p->fd)) < 0) + copy = fdset_put_dup(fds, p->fd); + if (copy < 0) return copy; if (p->type == SOCKET_SOCKET) { - char *t; + _cleanup_free_ char *t = NULL; - if ((r = socket_address_print(&p->address, &t)) < 0) + 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); - free(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); @@ -1672,13 +1752,13 @@ static int socket_deserialize_item(Unit *u, const char *key, const char *value, assert(u); assert(key); assert(value); - assert(fds); if (streq(key, "state")) { SocketState state; - if ((state = socket_state_from_string(value)) < 0) - log_debug("Failed to parse state value %s", value); + state = socket_state_from_string(value); + if (state < 0) + log_debug_unit(u->id, "Failed to parse state value %s", value); else s->deserialized_state = state; } else if (streq(key, "result")) { @@ -1686,7 +1766,7 @@ static int socket_deserialize_item(Unit *u, const char *key, const char *value, f = socket_result_from_string(value); if (f < 0) - log_debug("Failed to parse result value %s", value); + log_debug_unit(u->id, "Failed to parse result value %s", value); else if (f != SOCKET_SUCCESS) s->result = f; @@ -1694,21 +1774,22 @@ static int socket_deserialize_item(Unit *u, const char *key, const char *value, unsigned k; if (safe_atou(value, &k) < 0) - log_debug("Failed to parse n-accepted value %s", value); + log_debug_unit(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_debug("Failed to parse control-pid value %s", value); + log_debug_unit(u->id, "Failed to parse control-pid value %s", value); else s->control_pid = pid; } else if (streq(key, "control-command")) { SocketExecCommand id; - if ((id = socket_exec_command_from_string(value)) < 0) - log_debug("Failed to parse exec-command value %s", value); + id = socket_exec_command_from_string(value); + if (id < 0) + log_debug_unit(u->id, "Failed to parse exec-command value %s", value); else { s->control_command_id = id; s->control_command = s->exec_command[id]; @@ -1718,7 +1799,7 @@ static int socket_deserialize_item(Unit *u, const char *key, const char *value, SocketPort *p; if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) - log_debug("Failed to parse fifo value %s", value); + log_debug_unit(u->id, "Failed to parse fifo value %s", value); else { LIST_FOREACH(port, p, s->ports) @@ -1727,8 +1808,7 @@ static int socket_deserialize_item(Unit *u, const char *key, const char *value, break; if (p) { - if (p->fd >= 0) - close_nointr_nofail(p->fd); + safe_close(p->fd); p->fd = fdset_remove(fds, fd); } } @@ -1738,7 +1818,7 @@ static int socket_deserialize_item(Unit *u, const char *key, const char *value, SocketPort *p; if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) - log_debug("Failed to parse special value %s", value); + log_debug_unit(u->id, "Failed to parse special value %s", value); else { LIST_FOREACH(port, p, s->ports) @@ -1747,8 +1827,26 @@ static int socket_deserialize_item(Unit *u, const char *key, const char *value, break; if (p) { - if (p->fd >= 0) - close_nointr_nofail(p->fd); + 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_debug_unit(u->id, "Failed to parse mqueue value %s", value); + else { + + LIST_FOREACH(port, p, s->ports) + if (p->type == SOCKET_MQUEUE && + streq_ptr(p->path, value+skip)) + break; + + if (p) { + safe_close(p->fd); p->fd = fdset_remove(fds, fd); } } @@ -1758,7 +1856,7 @@ static int socket_deserialize_item(Unit *u, const char *key, const char *value, SocketPort *p; if (sscanf(value, "%i %i %n", &fd, &type, &skip) < 2 || fd < 0 || type < 0 || !fdset_contains(fds, fd)) - log_debug("Failed to parse socket value %s", value); + log_debug_unit(u->id, "Failed to parse socket value %s", value); else { LIST_FOREACH(port, p, s->ports) @@ -1766,8 +1864,7 @@ static int socket_deserialize_item(Unit *u, const char *key, const char *value, break; if (p) { - if (p->fd >= 0) - close_nointr_nofail(p->fd); + safe_close(p->fd); p->fd = fdset_remove(fds, fd); } } @@ -1777,7 +1874,7 @@ static int socket_deserialize_item(Unit *u, const char *key, const char *value, SocketPort *p; if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd)) - log_debug("Failed to parse socket value %s", value); + log_debug_unit(u->id, "Failed to parse socket value %s", value); else { LIST_FOREACH(port, p, s->ports) @@ -1785,31 +1882,98 @@ static int socket_deserialize_item(Unit *u, const char *key, const char *value, break; if (p) { - if (p->fd >= 0) - close_nointr_nofail(p->fd); + safe_close(p->fd); p->fd = fdset_remove(fds, fd); } } - } else - log_debug("Unknown serialization key '%s'", key); + log_debug_unit(UNIT(s)->id, "Unknown serialization key '%s'", key); return 0; } -static UnitActiveState socket_active_state(Unit *u) { +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]; } -static const char *socket_sub_state_to_string(Unit *u) { +_pure_ static const char *socket_sub_state_to_string(Unit *u) { assert(u); return socket_state_to_string(SOCKET(u)->state); } -static bool socket_check_gc(Unit *u) { +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); @@ -1817,51 +1981,59 @@ static bool socket_check_gc(Unit *u) { return s->n_connections > 0; } -static void socket_fd_event(Unit *u, int fd, uint32_t events, Watch *w) { - Socket *s = SOCKET(u); +static int socket_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata) { + SocketPort *p = userdata; int cfd = -1; - assert(s); + assert(p); assert(fd >= 0); - if (s->state != SOCKET_LISTENING) - return; + if (p->socket->state != SOCKET_LISTENING) + return 0; - log_debug("Incoming traffic on %s", u->id); + log_debug_unit(UNIT(p->socket)->id, "Incoming traffic on %s", UNIT(p->socket)->id); - if (events != EPOLLIN) { + if (revents != EPOLLIN) { - if (events & EPOLLHUP) - log_error("%s: Got POLLHUP on a listening socket. The service probably invoked shutdown() on it, and should better not do that.", u->id); + if (revents & EPOLLHUP) + log_error_unit(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_error("%s: Got unexpected poll event (0x%x) on socket.", u->id, events); + log_error_unit(UNIT(p->socket)->id, "%s: Got unexpected poll event (0x%x) on socket.", + UNIT(p->socket)->id, revents); goto fail; } - if (w->socket_accept) { + if (p->socket->accept && + p->type == SOCKET_SOCKET && + socket_address_can_accept(&p->address)) { + for (;;) { - if ((cfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK)) < 0) { + cfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK); + if (cfd < 0) { if (errno == EINTR) continue; - log_error("Failed to accept socket: %m"); + log_error_unit(UNIT(p->socket)->id, + "Failed to accept socket: %m"); goto fail; } break; } - socket_apply_socket_options(s, cfd); + socket_apply_socket_options(p->socket, cfd); } - socket_enter_running(s, cfd); - return; + socket_enter_running(p->socket, cfd); + return 0; fail: - socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES); + 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) { @@ -1876,7 +2048,7 @@ static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) { s->control_pid = 0; - if (is_clean_exit(code, status)) + if (is_clean_exit(code, status, NULL)) f = SOCKET_SUCCESS; else if (code == CLD_EXITED) f = SOCKET_FAILURE_EXIT_CODE; @@ -1894,8 +2066,10 @@ static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) { f = SOCKET_SUCCESS; } - log_full(f == SOCKET_SUCCESS ? LOG_DEBUG : LOG_NOTICE, - "%s control process exited, code=%s status=%i", u->id, sigchld_code_to_string(code), status); + log_full_unit(f == SOCKET_SUCCESS ? LOG_DEBUG : LOG_NOTICE, + u->id, + "%s control process exited, code=%s status=%i", + u->id, sigchld_code_to_string(code), status); if (f != SOCKET_SUCCESS) s->result = f; @@ -1904,7 +2078,9 @@ static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) { s->control_command->command_next && f == SOCKET_SUCCESS) { - log_debug("%s running next command for state %s", u->id, socket_state_to_string(s->state)); + log_debug_unit(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; @@ -1913,7 +2089,9 @@ static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) { /* No further commands for this step, so let's figure * out what to do next */ - log_debug("%s got final SIGCHLD for state %s", u->id, socket_state_to_string(s->state)); + log_debug_unit(u->id, + "%s got final SIGCHLD for state %s", + u->id, socket_state_to_string(s->state)); switch (s->state) { @@ -1952,68 +2130,82 @@ static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) { unit_add_to_dbus_queue(u); } -static void socket_timer_event(Unit *u, uint64_t elapsed, Watch *w) { - Socket *s = SOCKET(u); +static int socket_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) { + Socket *s = SOCKET(userdata); assert(s); - assert(elapsed == 1); - assert(w == &s->timer_watch); + assert(s->timer_event_source == source); switch (s->state) { case SOCKET_START_PRE: - log_warning("%s starting timed out. Terminating.", u->id); + log_warning_unit(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_POST: - log_warning("%s starting timed out. Stopping.", u->id); + log_warning_unit(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_warning("%s stopping timed out. Terminating.", u->id); + log_warning_unit(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->exec_context.send_sigkill) { - log_warning("%s stopping timed out. Killing.", u->id); + if (s->kill_context.send_sigkill) { + log_warning_unit(UNIT(s)->id, + "%s stopping timed out. Killing.", UNIT(s)->id); socket_enter_signal(s, SOCKET_STOP_PRE_SIGKILL, SOCKET_FAILURE_TIMEOUT); } else { - log_warning("%s stopping timed out. Skipping SIGKILL. Ignoring.", u->id); + log_warning_unit(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_warning("%s still around after SIGKILL. Ignoring.", u->id); + log_warning_unit(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_warning("%s stopping timed out (2). Terminating.", u->id); + log_warning_unit(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->exec_context.send_sigkill) { - log_warning("%s stopping timed out (2). Killing.", u->id); + if (s->kill_context.send_sigkill) { + log_warning_unit(UNIT(s)->id, + "%s stopping timed out (2). Killing.", UNIT(s)->id); socket_enter_signal(s, SOCKET_FINAL_SIGKILL, SOCKET_FAILURE_TIMEOUT); } else { - log_warning("%s stopping timed out (2). Skipping SIGKILL. Ignoring.", u->id); + log_warning_unit(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_warning("%s still around after SIGKILL (2). Entering failed mode.", u->id); + log_warning_unit(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) { @@ -2054,7 +2246,18 @@ int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds) { return 0; } -void socket_notify_service_dead(Socket *s, bool failed_permanent) { +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! @@ -2063,7 +2266,7 @@ void socket_notify_service_dead(Socket *s, bool failed_permanent) { * services. */ if (s->state == SOCKET_RUNNING) { - log_debug("%s got notified about service death (failed permanently: %s)", UNIT(s)->id, yes_no(failed_permanent)); + log_debug_unit(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 @@ -2082,66 +2285,62 @@ void socket_connection_unref(Socket *s) { assert(s->n_connections > 0); s->n_connections--; - log_debug("%s: One connection closed, %u left.", UNIT(s)->id, s->n_connections); + log_debug_unit(UNIT(s)->id, "%s: One connection closed, %u left.", UNIT(s)->id, s->n_connections); } -static void socket_reset_failed(Unit *u) { +static void socket_trigger_notify(Unit *u, Unit *other) { Socket *s = SOCKET(u); + Service *se; - assert(s); - - if (s->state == SOCKET_FAILED) - socket_set_state(s, SOCKET_DEAD); - - s->result = SOCKET_SUCCESS; -} + assert(u); + assert(other); -static int socket_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) { - Socket *s = SOCKET(u); - int r = 0; - Set *pid_set = NULL; + /* 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; - assert(s); + if (other->load_state != UNIT_LOADED || + other->type != UNIT_SERVICE) + return; - if (who == KILL_MAIN) { - dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "Socket units have no main processes"); - return -ESRCH; - } + se = SERVICE(other); - if (s->control_pid <= 0 && who == KILL_CONTROL) { - dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill"); - return -ESRCH; - } + if (se->state == SERVICE_FAILED) + socket_notify_service_dead(s, se->result == SERVICE_FAILURE_START_LIMIT); - if (who == KILL_CONTROL || who == KILL_ALL) - if (s->control_pid > 0) - if (kill(s->control_pid, signo) < 0) - r = -errno; + if (se->state == SERVICE_DEAD || + se->state == SERVICE_STOP || + se->state == SERVICE_STOP_SIGTERM || + se->state == SERVICE_STOP_SIGKILL || + se->state == SERVICE_STOP_POST || + se->state == SERVICE_FINAL_SIGTERM || + se->state == SERVICE_FINAL_SIGKILL || + se->state == SERVICE_AUTO_RESTART) + socket_notify_service_dead(s, false); - if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) { - int q; + if (se->state == SERVICE_RUNNING) + socket_set_state(s, SOCKET_RUNNING); +} - if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) - return -ENOMEM; +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); +} - /* Exclude the control pid from being killed via the cgroup */ - if (s->control_pid > 0) - if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) { - r = q; - goto finish; - } +static int socket_get_timeout(Unit *u, uint64_t *timeout) { + Socket *s = SOCKET(u); + int r; - q = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, signo, false, false, pid_set, NULL); - if (q < 0) - if (q != -EAGAIN && q != -ESRCH && q != -ENOENT) - r = q; - } + if (!s->timer_event_source) + return 0; -finish: - if (pid_set) - set_free(pid_set); + r = sd_event_source_get_time(s->timer_event_source, timeout); + if (r < 0) + return r; - return r; + return 1; } static const char* const socket_state_table[_SOCKET_STATE_MAX] = { @@ -2183,19 +2382,22 @@ static const char* const socket_result_table[_SOCKET_RESULT_MAX] = { DEFINE_STRING_TABLE_LOOKUP(socket_result, SocketResult); const UnitVTable socket_vtable = { - .suffix = ".socket", .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, - .kill = socket_kill, - .coldplug = socket_coldplug, .dump = socket_dump, @@ -2203,21 +2405,45 @@ const UnitVTable socket_vtable = { .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, - .fd_event = socket_fd_event, .sigchld_event = socket_sigchld_event, - .timer_event = socket_timer_event, + + .trigger_notify = socket_trigger_notify, .reset_failed = socket_reset_failed, .bus_interface = "org.freedesktop.systemd1.Socket", - .bus_message_handler = bus_socket_message_handler, - .bus_invalidating_properties = bus_socket_invalidating_properties + .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.", + }, + }, };