X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fmachine%2Fmachinectl.c;h=c2bf7e519797ef574b02246e1df1f9bedf37385c;hp=5a6bb056b1dc07ab4c1eb76a8916a87d1030b8b4;hb=878cd7e95ca303f9851d227a22d2022bd49944b0;hpb=f69157a66ffe413b4cf8bd79057487fc8921e78b diff --git a/src/machine/machinectl.c b/src/machine/machinectl.c index 5a6bb056b..c2bf7e519 100644 --- a/src/machine/machinectl.c +++ b/src/machine/machinectl.c @@ -19,14 +19,16 @@ along with systemd; If not, see . ***/ +#include #include #include #include #include #include #include -#include #include +#include +#include #include "sd-bus.h" #include "log.h" @@ -46,9 +48,9 @@ static char **arg_property = NULL; static bool arg_all = false; static bool arg_full = false; static bool arg_no_pager = false; +static bool arg_legend = true; static const char *arg_kill_who = NULL; static int arg_signal = SIGTERM; -static bool arg_ask_password = true; static BusTransport arg_transport = BUS_TRANSPORT_LOCAL; static char *arg_host = NULL; @@ -84,12 +86,12 @@ static int list_machines(sd_bus *bus, char **args, unsigned n) { return r; } - if (on_tty()) + if (arg_legend) printf("%-32s %-9s %-16s\n", "MACHINE", "CONTAINER", "SERVICE"); r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssso)"); if (r < 0) - goto fail; + return bus_log_parse_error(r); while ((r = sd_bus_message_read(reply, "(ssso)", &name, &class, &service, &object)) > 0) { printf("%-32s %-9s %-16s\n", name, class, service); @@ -97,23 +99,19 @@ static int list_machines(sd_bus *bus, char **args, unsigned n) { k++; } if (r < 0) - goto fail; + return bus_log_parse_error(r); r = sd_bus_message_exit_container(reply); if (r < 0) - goto fail; + return bus_log_parse_error(r); - if (on_tty()) + if (arg_legend) printf("\n%u machines listed.\n", k); return 0; - -fail: - log_error("Failed to parse reply: %s", strerror(-r)); - return r; } -static int show_scope_cgroup(sd_bus *bus, const char *unit, pid_t leader) { +static int show_unit_cgroup(sd_bus *bus, const char *unit, pid_t leader) { _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_free_ char *path = NULL; @@ -135,7 +133,7 @@ static int show_scope_cgroup(sd_bus *bus, const char *unit, pid_t leader) { bus, "org.freedesktop.systemd1", path, - "org.freedesktop.systemd1.Scope", + endswith(unit, ".scope") ? "org.freedesktop.systemd1.Scope" : "org.freedesktop.systemd1.Service", "ControlGroup", &error, &reply, @@ -146,10 +144,8 @@ static int show_scope_cgroup(sd_bus *bus, const char *unit, pid_t leader) { } r = sd_bus_message_read(reply, "s", &cgroup); - if (r < 0) { - log_error("Failed to parse reply: %s", strerror(-r)); - return r; - } + if (r < 0) + return bus_log_parse_error(r); if (isempty(cgroup)) return 0; @@ -171,13 +167,70 @@ static int show_scope_cgroup(sd_bus *bus, const char *unit, pid_t leader) { return 0; } +static int print_addresses(sd_bus *bus, const char *name, const char *prefix, const char *prefix2) { + _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; + int r; + + assert(bus); + assert(name); + assert(prefix); + assert(prefix2); + + r = sd_bus_call_method(bus, + "org.freedesktop.machine1", + "/org/freedesktop/machine1", + "org.freedesktop.machine1.Manager", + "GetMachineAddresses", + NULL, + &reply, + "s", name); + if (r < 0) + return r; + + r = sd_bus_message_enter_container(reply, 'a', "(yay)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_enter_container(reply, 'r', "yay")) > 0) { + unsigned char family; + const void *a; + size_t sz; + char buffer[MAX(INET6_ADDRSTRLEN, INET_ADDRSTRLEN)]; + + r = sd_bus_message_read(reply, "y", &family); + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_read_array(reply, 'y', &a, &sz); + if (r < 0) + return bus_log_parse_error(r); + + printf("%s%s\n", prefix, inet_ntop(family, a, buffer, sizeof(buffer))); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + if (prefix != prefix2) + prefix = prefix2; + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + return 0; +} + typedef struct MachineStatusInfo { - const char *name; + char *name; sd_id128_t id; - const char *class; - const char *service; - const char *scope; - const char *root_directory; + char *class; + char *service; + char *unit; + char *root_directory; pid_t leader; usec_t timestamp; } MachineStatusInfo; @@ -227,207 +280,97 @@ static void print_machine_status_info(sd_bus *bus, MachineStatusInfo *i) { if (i->root_directory) printf("\t Root: %s\n", i->root_directory); - if (i->scope) { - printf("\t Unit: %s\n", i->scope); - show_scope_cgroup(bus, i->scope, i->leader); - } -} - -static int status_property_machine(const char *name, sd_bus_message *property, MachineStatusInfo *i) { - char type; - const char *contents; - int r; + print_addresses(bus, i->name, + "\t Address: ", + "\t "); - assert(name); - assert(property); - assert(i); - - r = sd_bus_message_peek_type(property, &type, &contents); - if (r < 0) { - log_error("Could not determine type of message: %s", strerror(-r)); - return r; + if (i->unit) { + printf("\t Unit: %s\n", i->unit); + show_unit_cgroup(bus, i->unit, i->leader); } - - switch (type) { - - case SD_BUS_TYPE_STRING: { - const char *s; - - sd_bus_message_read_basic(property, type, &s); - - if (!isempty(s)) { - if (streq(name, "Name")) - i->name = s; - else if (streq(name, "Class")) - i->class = s; - else if (streq(name, "Service")) - i->service = s; - else if (streq(name, "Scope")) - i->scope = s; - else if (streq(name, "RootDirectory")) - i->root_directory = s; - } - break; - } - - case SD_BUS_TYPE_UINT32: { - uint32_t u; - - sd_bus_message_read_basic(property, type, &u); - - if (streq(name, "Leader")) - i->leader = (pid_t) u; - - break; - } - - case SD_BUS_TYPE_UINT64: { - uint64_t u; - - sd_bus_message_read_basic(property, type, &u); - - if (streq(name, "Timestamp")) - i->timestamp = (usec_t) u; - - break; - } - - case SD_BUS_TYPE_ARRAY: { - if (streq(contents, "y") && streq(name, "Id")) { - const void *v; - size_t n; - - sd_bus_message_read_array(property, SD_BUS_TYPE_BYTE, &v, &n); - if (n == 0) - i->id = SD_ID128_NULL; - else if (n == 16) - memcpy(&i->id, v, n); - } - - break; - } - } - - return 0; } -static int print_property(const char *name, sd_bus_message *reply) { - assert(name); - assert(reply); - - if (arg_property && !strv_find(arg_property, name)) - return 0; - - if (bus_generic_print_property(name, reply, arg_all) > 0) - return 0; - - if (arg_all) - printf("%s=[unprintable]\n", name); - - return 0; -} +static int show_info(const char *verb, sd_bus *bus, const char *path, bool *new_line) { + + static const struct bus_properties_map map[] = { + { "Name", "s", NULL, offsetof(MachineStatusInfo, name) }, + { "Class", "s", NULL, offsetof(MachineStatusInfo, class) }, + { "Service", "s", NULL, offsetof(MachineStatusInfo, service) }, + { "Unit", "s", NULL, offsetof(MachineStatusInfo, unit) }, + { "RootDirectory", "s", NULL, offsetof(MachineStatusInfo, root_directory) }, + { "Leader", "u", NULL, offsetof(MachineStatusInfo, leader) }, + { "Timestamp", "t", NULL, offsetof(MachineStatusInfo, timestamp) }, + { "Id", "ay", bus_map_id128, offsetof(MachineStatusInfo, id) }, + {} + }; -static int show_one(const char *verb, sd_bus *bus, const char *path, bool show_properties, bool *new_line) { - _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; - _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; + MachineStatusInfo info = {}; int r; - MachineStatusInfo machine_info = {}; assert(path); assert(new_line); - r = sd_bus_call_method( - bus, - "org.freedesktop.machine1", - path, - "org.freedesktop.DBus.Properties", - "GetAll", - &error, - &reply, - "s", ""); + r = bus_map_all_properties(bus, + "org.freedesktop.machine1", + path, + map, + &info); if (r < 0) { - log_error("Could not get properties: %s", bus_error_message(&error, -r)); + log_error("Could not get properties: %s", strerror(-r)); return r; } - if (*new_line) printf("\n"); - *new_line = true; - r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}"); - if (r < 0) - goto fail; + print_machine_status_info(bus, &info); - while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) { - const char *name; - const char *contents; + free(info.name); + free(info.class); + free(info.service); + free(info.unit); + free(info.root_directory); - r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_STRING, &name); - if (r < 0) - goto fail; - - r = sd_bus_message_peek_type(reply, NULL, &contents); - if (r < 0) - goto fail; - - r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, contents); - if (r < 0) - goto fail; + return r; +} - if (show_properties) - r = print_property(name, reply); - else - r = status_property_machine(name, reply, &machine_info); - if (r < 0) - goto fail; +static int show_properties(sd_bus *bus, const char *path, bool *new_line) { + int r; - r = sd_bus_message_exit_container(reply); - if (r < 0) - goto fail; + if (*new_line) + printf("\n"); - r = sd_bus_message_exit_container(reply); - if (r < 0) - goto fail; - } - if (r < 0) - goto fail; + *new_line = true; - r = sd_bus_message_exit_container(reply); + r = bus_print_all_properties(bus, "org.freedesktop.machine1", path, arg_property, arg_all); if (r < 0) - goto fail; - - if (!show_properties) - print_machine_status_info(bus, &machine_info); - - return 0; + log_error("Could not get properties: %s", strerror(-r)); -fail: - log_error("Failed to parse reply: %s", strerror(-r)); return r; } static int show(sd_bus *bus, char **args, unsigned n) { _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; - int r, ret = 0; + int r = 0; unsigned i; - bool show_properties, new_line = false; + bool properties, new_line = false; assert(bus); assert(args); - show_properties = !strstr(args[0], "status"); + properties = !strstr(args[0], "status"); pager_open_if_enabled(); - if (show_properties && n <= 1) { + if (properties && n <= 1) { - /* If no argument is specified inspect the manager + /* If no argument is specified, inspect the manager * itself */ - - return show_one(args[0], bus, "/org/freedesktop/machine1", show_properties, &new_line); + r = show_properties(bus, "/org/freedesktop/machine1", &new_line); + if (r < 0) + return r; } for (i = 1; i < n; i++) { @@ -448,17 +391,16 @@ static int show(sd_bus *bus, char **args, unsigned n) { } r = sd_bus_message_read(reply, "o", &path); - if (r < 0) { - log_error("Failed to parse reply: %s", strerror(-r)); - return r; - } + if (r < 0) + return bus_log_parse_error(r); - r = show_one(args[0], bus, path, show_properties, &new_line); - if (r != 0) - ret = r; + if (properties) + r = show_properties(bus, path, &new_line); + else + r = show_info(args[0], bus, path, &new_line); } - return ret; + return r; } static int kill_machine(sd_bus *bus, char **args, unsigned n) { @@ -491,6 +433,20 @@ static int kill_machine(sd_bus *bus, char **args, unsigned n) { return 0; } +static int reboot_machine(sd_bus *bus, char **args, unsigned n) { + arg_kill_who = "leader"; + arg_signal = SIGINT; /* sysvinit + systemd */ + + return kill_machine(bus, args, n); +} + +static int poweroff_machine(sd_bus *bus, char **args, unsigned n) { + arg_kill_who = "leader"; + arg_signal = SIGRTMIN+4; /* only systemd */ + + return kill_machine(bus, args, n); +} + static int terminate_machine(sd_bus *bus, char **args, unsigned n) { _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; unsigned i; @@ -519,61 +475,39 @@ static int terminate_machine(sd_bus *bus, char **args, unsigned n) { } static int openpt_in_namespace(pid_t pid, int flags) { - _cleanup_close_ int nsfd = -1, rootfd = -1; - _cleanup_free_ char *ns = NULL, *root = NULL; - _cleanup_close_pipe_ int sock[2] = { -1, -1 }; - struct msghdr mh; + _cleanup_close_pair_ int pair[2] = { -1, -1 }; + _cleanup_close_ int pidnsfd = -1, mntnsfd = -1, rootfd = -1; union { struct cmsghdr cmsghdr; uint8_t buf[CMSG_SPACE(sizeof(int))]; - } control; + } control = {}; + struct msghdr mh = { + .msg_control = &control, + .msg_controllen = sizeof(control), + }; struct cmsghdr *cmsg; int master = -1, r; pid_t child; siginfo_t si; - r = asprintf(&ns, "/proc/%lu/ns/mnt", (unsigned long) pid); + r = namespace_open(pid, &pidnsfd, &mntnsfd, NULL, &rootfd); if (r < 0) - return -ENOMEM; - - nsfd = open(ns, O_RDONLY|O_NOCTTY|O_CLOEXEC); - if (nsfd < 0) - return -errno; - - r = asprintf(&root, "/proc/%lu/root", (unsigned long) pid); - if (r < 0) - return -ENOMEM; - - rootfd = open(root, O_RDONLY|O_NOCTTY|O_CLOEXEC|O_DIRECTORY); - if (rootfd < 0) - return -errno; + return r; - if (socketpair(AF_UNIX, SOCK_DGRAM, 0, sock) < 0) + if (socketpair(AF_UNIX, SOCK_DGRAM, 0, pair) < 0) return -errno; - zero(control); - zero(mh); - mh.msg_control = &control; - mh.msg_controllen = sizeof(control); - child = fork(); if (child < 0) return -errno; if (child == 0) { - close_nointr_nofail(sock[0]); - sock[0] = -1; + pair[0] = safe_close(pair[0]); - r = setns(nsfd, CLONE_NEWNS); + r = namespace_enter(pidnsfd, mntnsfd, -1, rootfd); if (r < 0) _exit(EXIT_FAILURE); - if (fchdir(rootfd) < 0) - _exit(EXIT_FAILURE); - - if (chroot(".") < 0) - _exit(EXIT_FAILURE); - master = posix_openpt(flags); if (master < 0) _exit(EXIT_FAILURE); @@ -586,18 +520,21 @@ static int openpt_in_namespace(pid_t pid, int flags) { mh.msg_controllen = cmsg->cmsg_len; - r = sendmsg(sock[1], &mh, MSG_NOSIGNAL); - close_nointr_nofail(master); - if (r < 0) + if (sendmsg(pair[1], &mh, MSG_NOSIGNAL) < 0) _exit(EXIT_FAILURE); _exit(EXIT_SUCCESS); } - close_nointr_nofail(sock[1]); - sock[1] = -1; + pair[1] = safe_close(pair[1]); - if (recvmsg(sock[0], &mh, MSG_NOSIGNAL|MSG_CMSG_CLOEXEC) < 0) + r = wait_for_terminate(child, &si); + if (r < 0) + return r; + if (si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS) + return -EIO; + + if (recvmsg(pair[0], &mh, MSG_NOSIGNAL|MSG_CMSG_CLOEXEC) < 0) return -errno; for (cmsg = CMSG_FIRSTHDR(&mh); cmsg; cmsg = CMSG_NXTHDR(&mh, cmsg)) @@ -616,14 +553,8 @@ static int openpt_in_namespace(pid_t pid, int flags) { master = fds[0]; } - r = wait_for_terminate(child, &si); - if (r < 0 || si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS || master < 0) { - - if (master >= 0) - close_nointr_nofail(master); - - return r < 0 ? r : -EIO; - } + if (master < 0) + return -EIO; return master; } @@ -643,7 +574,7 @@ static int login_machine(sd_bus *bus, char **args, unsigned n) { assert(args); if (arg_transport != BUS_TRANSPORT_LOCAL) { - log_error("Login only support on local machines."); + log_error("Login only supported on local machines."); return -ENOTSUP; } @@ -662,10 +593,8 @@ static int login_machine(sd_bus *bus, char **args, unsigned n) { } r = sd_bus_message_read(reply, "o", &path); - if (r < 0) { - log_error("Failed to parse reply: %s", strerror(-r)); - return r; - } + if (r < 0) + return bus_log_parse_error(r); r = sd_bus_get_property( bus, @@ -682,10 +611,8 @@ static int login_machine(sd_bus *bus, char **args, unsigned n) { } r = sd_bus_message_read(reply2, "u", &leader); - if (r < 0) { - log_error("Failed to parse reply: %s", strerror(-r)); - return r; - } + if (r < 0) + return bus_log_parse_error(r); master = openpt_in_namespace(leader, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NDELAY); if (master < 0) { @@ -705,7 +632,7 @@ static int login_machine(sd_bus *bus, char **args, unsigned n) { return -EIO; } - r = sd_bus_open_system_container(args[1], &container_bus); + r = sd_bus_open_system_container(&container_bus, args[1]); if (r < 0) { log_error("Failed to get container bus: %s", strerror(-r)); return r; @@ -732,6 +659,8 @@ static int login_machine(sd_bus *bus, char **args, unsigned n) { return r; } + container_bus = sd_bus_unref(container_bus); + assert_se(sigemptyset(&mask) == 0); sigset_add_many(&mask, SIGWINCH, SIGTERM, SIGINT, -1); assert_se(sigprocmask(SIG_BLOCK, &mask, NULL) == 0); @@ -758,7 +687,7 @@ static int help(void) { " -h --help Show this help\n" " --version Show package version\n" " --no-pager Do not pipe output into a pager\n" - " --no-ask-password Don't prompt for password\n" + " --no-legend Do not show the headers and footers\n" " -H --host=[USER@]HOST Operate on remote host\n" " -M --machine=CONTAINER Operate on local container\n" " -p --property=NAME Show only properties by this name\n" @@ -768,11 +697,13 @@ static int help(void) { " -s --signal=SIGNAL Which signal to send\n\n" "Commands:\n" " list List running VMs and containers\n" - " status [NAME...] Show VM/container status\n" - " show [NAME...] Show properties of one or more VMs/containers\n" - " terminate [NAME...] Terminate one or more VMs/containers\n" - " kill [NAME...] Send signal to processes of a VM/container\n" - " login [NAME] Get a login prompt on a container\n", + " status NAME... Show VM/container status\n" + " show NAME... Show properties of one or more VMs/containers\n" + " login NAME Get a login prompt on a container\n" + " poweroff NAME... Power off one or more containers\n" + " reboot NAME... Reboot one or more containers\n" + " kill NAME... Send signal to processes of a VM/container\n" + " terminate NAME... Terminate one or more VMs/containers\n", program_invocation_short_name); return 0; @@ -783,8 +714,8 @@ static int parse_argv(int argc, char *argv[]) { enum { ARG_VERSION = 0x100, ARG_NO_PAGER, + ARG_NO_LEGEND, ARG_KILL_WHO, - ARG_NO_ASK_PASSWORD, }; static const struct option options[] = { @@ -794,12 +725,12 @@ static int parse_argv(int argc, char *argv[]) { { "all", no_argument, NULL, 'a' }, { "full", no_argument, NULL, 'l' }, { "no-pager", no_argument, NULL, ARG_NO_PAGER }, + { "no-legend", no_argument, NULL, ARG_NO_LEGEND }, { "kill-who", required_argument, NULL, ARG_KILL_WHO }, { "signal", required_argument, NULL, 's' }, { "host", required_argument, NULL, 'H' }, { "machine", required_argument, NULL, 'M' }, - { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD }, - { NULL, 0, NULL, 0 } + {} }; int c, r; @@ -812,8 +743,7 @@ static int parse_argv(int argc, char *argv[]) { switch (c) { case 'h': - help(); - return 0; + return help(); case ARG_VERSION: puts(PACKAGE_STRING); @@ -843,8 +773,8 @@ static int parse_argv(int argc, char *argv[]) { arg_no_pager = true; break; - case ARG_NO_ASK_PASSWORD: - arg_ask_password = false; + case ARG_NO_LEGEND: + arg_legend = false; break; case ARG_KILL_WHO: @@ -873,8 +803,7 @@ static int parse_argv(int argc, char *argv[]) { return -EINVAL; default: - log_error("Unknown option code %c", c); - return -EINVAL; + assert_not_reached("Unhandled option"); } } @@ -897,6 +826,8 @@ static int machinectl_main(sd_bus *bus, int argc, char *argv[]) { { "status", MORE, 2, show }, { "show", MORE, 1, show }, { "terminate", MORE, 2, terminate_machine }, + { "reboot", MORE, 2, reboot_machine }, + { "poweroff", MORE, 2, poweroff_machine }, { "kill", MORE, 2, kill_machine }, { "login", MORE, 2, login_machine }, }; @@ -910,7 +841,7 @@ static int machinectl_main(sd_bus *bus, int argc, char *argv[]) { left = argc - optind; if (left <= 0) - /* Special rule: no arguments means "list-sessions" */ + /* Special rule: no arguments means "list" */ i = 0; else { if (streq(argv[optind], "help")) { @@ -962,35 +893,29 @@ static int machinectl_main(sd_bus *bus, int argc, char *argv[]) { } int main(int argc, char*argv[]) { - int r, ret = EXIT_FAILURE; _cleanup_bus_unref_ sd_bus *bus = NULL; + int r; setlocale(LC_ALL, ""); log_parse_environment(); log_open(); r = parse_argv(argc, argv); - if (r < 0) - goto finish; - else if (r == 0) { - ret = EXIT_SUCCESS; + if (r <= 0) goto finish; - } r = bus_open_transport(arg_transport, arg_host, false, &bus); if (r < 0) { log_error("Failed to create bus connection: %s", strerror(-r)); - ret = EXIT_FAILURE; goto finish; } r = machinectl_main(bus, argc, argv); - ret = r < 0 ? EXIT_FAILURE : r; finish: - strv_free(arg_property); - pager_close(); - return ret; + strv_free(arg_property); + + return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; }