X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fmachine%2Fmachinectl.c;h=f604263d8f2cfd8c7a991144776924c84e4e139c;hp=32f862d093441b93978c41401c68e2f1be6ad595;hb=1d050e1e0a7082e23ee9b31fa0b819cb332b3444;hpb=3db729cb8e6822114e9323f4041dcdc080f2fb3c diff --git a/src/machine/machinectl.c b/src/machine/machinectl.c index 32f862d09..f604263d8 100644 --- a/src/machine/machinectl.c +++ b/src/machine/machinectl.c @@ -27,6 +27,9 @@ #include #include #include +#include +#include +#include #include "sd-bus.h" #include "log.h" @@ -41,6 +44,7 @@ #include "cgroup-show.h" #include "cgroup-util.h" #include "ptyfwd.h" +#include "event-util.h" static char **arg_property = NULL; static bool arg_all = false; @@ -165,6 +169,109 @@ static int show_unit_cgroup(sd_bus *bus, const char *unit, pid_t leader) { return 0; } +static int print_addresses(sd_bus *bus, const char *name, int ifi, 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', "(iay)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_enter_container(reply, 'r', "iay")) > 0) { + int family; + const void *a; + size_t sz; + char buffer[MAX(INET6_ADDRSTRLEN, INET_ADDRSTRLEN)]; + + r = sd_bus_message_read(reply, "i", &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); + + fputs(prefix, stdout); + fputs(inet_ntop(family, a, buffer, sizeof(buffer)), stdout); + if (family == AF_INET6 && ifi > 0) + printf("%%%i", ifi); + fputc('\n', stdout); + + 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; +} + +static int print_os_release(sd_bus *bus, const char *name, const char *prefix) { + _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; + const char *k, *v, *pretty = NULL; + int r; + + assert(bus); + assert(name); + assert(prefix); + + r = sd_bus_call_method(bus, + "org.freedesktop.machine1", + "/org/freedesktop/machine1", + "org.freedesktop.machine1.Manager", + "GetMachineOSRelease", + NULL, + &reply, + "s", name); + if (r < 0) + return r; + + r = sd_bus_message_enter_container(reply, 'a', "{ss}"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(reply, "{ss}", &k, &v)) > 0) { + if (streq(k, "PRETTY_NAME")) + pretty = v; + + } + 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); + + if (pretty) + printf("%s%s\n", prefix, pretty); + + return 0; +} + typedef struct MachineStatusInfo { char *name; sd_id128_t id; @@ -174,11 +281,15 @@ typedef struct MachineStatusInfo { char *root_directory; pid_t leader; usec_t timestamp; + int *netif; + unsigned n_netif; } MachineStatusInfo; static void print_machine_status_info(sd_bus *bus, MachineStatusInfo *i) { char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1; char since2[FORMAT_TIMESTAMP_MAX], *s2; + int ifi = -1; + assert(i); fputs(strna(i->name), stdout); @@ -221,23 +332,74 @@ 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->n_netif > 0) { + unsigned c; + + fputs("\t Iface:", stdout); + + for (c = 0; c < i->n_netif; c++) { + char name[IF_NAMESIZE+1] = ""; + + if (if_indextoname(i->netif[c], name)) { + fputc(' ', stdout); + fputs(name, stdout); + + if (ifi < 0) + ifi = i->netif[c]; + else + ifi = 0; + } else + printf(" %i", i->netif[c]); + } + + fputc('\n', stdout); + } + + print_addresses(bus, i->name, ifi, + "\t Address: ", + "\t "); + + print_os_release(bus, i->name, "\t OS: "); + if (i->unit) { printf("\t Unit: %s\n", i->unit); show_unit_cgroup(bus, i->unit, i->leader); } } +static int map_netif(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { + MachineStatusInfo *i = userdata; + size_t l; + const void *v; + int r; + + assert_cc(sizeof(int32_t) == sizeof(int)); + r = sd_bus_message_read_array(m, SD_BUS_TYPE_INT32, &v, &l); + if (r < 0) + return r; + if (r == 0) + return -EBADMSG; + + i->n_netif = l / sizeof(int32_t); + i->netif = memdup(v, l); + if (!i->netif) + return -ENOMEM; + + 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) }, + { "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) }, + { "NetworkInterfaces", "ai", map_netif, 0 }, {} }; @@ -252,10 +414,8 @@ static int show_info(const char *verb, sd_bus *bus, const char *path, bool *new_ path, map, &info); - if (r < 0) { - log_error("Could not get properties: %s", strerror(-r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Could not get properties: %m"); if (*new_line) printf("\n"); @@ -268,6 +428,7 @@ static int show_info(const char *verb, sd_bus *bus, const char *path, bool *new_ free(info.service); free(info.unit); free(info.root_directory); + free(info.netif); return r; } @@ -282,7 +443,7 @@ static int show_properties(sd_bus *bus, const char *path, bool *new_line) { r = bus_print_all_properties(bus, "org.freedesktop.machine1", path, arg_property, arg_all); if (r < 0) - log_error("Could not get properties: %s", strerror(-r)); + log_error_errno(r, "Could not get properties: %m"); return r; } @@ -370,98 +531,49 @@ static int kill_machine(sd_bus *bus, char **args, unsigned n) { return 0; } -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; - - assert(args); +static int reboot_machine(sd_bus *bus, char **args, unsigned n) { + arg_kill_who = "leader"; + arg_signal = SIGINT; /* sysvinit + systemd */ - for (i = 1; i < n; i++) { - int r; + return kill_machine(bus, args, n); +} - r = sd_bus_call_method( - bus, - "org.freedesktop.machine1", - "/org/freedesktop/machine1", - "org.freedesktop.machine1.Manager", - "TerminateMachine", - &error, - NULL, - "s", args[i]); - if (r < 0) { - log_error("Could not terminate machine: %s", bus_error_message(&error, -r)); - return r; - } - } +static int poweroff_machine(sd_bus *bus, char **args, unsigned n) { + arg_kill_who = "leader"; + arg_signal = SIGRTMIN+4; /* only systemd */ - return 0; + return kill_machine(bus, args, n); } -static int reboot_machine(sd_bus *bus, char **args, unsigned 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; - int r; assert(args); - if (arg_transport != BUS_TRANSPORT_LOCAL) { - log_error("Reboot only supported on local machines."); - return -ENOTSUP; - } - for (i = 1; i < n; i++) { - _cleanup_bus_message_unref_ sd_bus_message *reply = NULL, *reply2 = NULL; - const char *path; - uint32_t leader; + int r; r = sd_bus_call_method( bus, "org.freedesktop.machine1", "/org/freedesktop/machine1", "org.freedesktop.machine1.Manager", - "GetMachine", + "TerminateMachine", &error, - &reply, + NULL, "s", args[i]); - - if (r < 0) { - log_error("Could not get path to machine: %s", bus_error_message(&error, -r)); - return r; - } - - r = sd_bus_message_read(reply, "o", &path); - if (r < 0) - return bus_log_parse_error(r); - - r = sd_bus_get_property( - bus, - "org.freedesktop.machine1", - path, - "org.freedesktop.machine1.Machine", - "Leader", - &error, - &reply2, - "u"); if (r < 0) { - log_error("Failed to retrieve PID of leader: %s", strerror(-r)); + log_error("Could not terminate machine: %s", bus_error_message(&error, -r)); return r; } - - r = sd_bus_message_read(reply2, "u", &leader); - if (r < 0) - return bus_log_parse_error(r); - - if (kill(leader, SIGINT) < 0) { - log_error("Failed to kill init process " PID_FMT ": %m", (pid_t) leader); - return -errno; - } } return 0; } static int openpt_in_namespace(pid_t pid, int flags) { - _cleanup_close_pipe_ int pair[2] = { -1, -1 }; + _cleanup_close_pair_ int pair[2] = { -1, -1 }; _cleanup_close_ int pidnsfd = -1, mntnsfd = -1, rootfd = -1; union { struct cmsghdr cmsghdr; @@ -476,7 +588,7 @@ static int openpt_in_namespace(pid_t pid, int flags) { pid_t child; siginfo_t si; - r = namespace_open(pid, &pidnsfd, &mntnsfd, &rootfd); + r = namespace_open(pid, &pidnsfd, &mntnsfd, NULL, &rootfd); if (r < 0) return r; @@ -488,10 +600,9 @@ static int openpt_in_namespace(pid_t pid, int flags) { return -errno; if (child == 0) { - close_nointr_nofail(pair[0]); - pair[0] = -1; + pair[0] = safe_close(pair[0]); - r = namespace_enter(pidnsfd, mntnsfd, rootfd); + r = namespace_enter(pidnsfd, mntnsfd, -1, rootfd); if (r < 0) _exit(EXIT_FAILURE); @@ -513,14 +624,13 @@ static int openpt_in_namespace(pid_t pid, int flags) { _exit(EXIT_SUCCESS); } - close_nointr_nofail(pair[1]); - pair[1] = -1; + pair[1] = safe_close(pair[1]); r = wait_for_terminate(child, &si); - if (r < 0 || si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS) { - - return r < 0 ? r : -EIO; - } + 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; @@ -550,13 +660,15 @@ static int openpt_in_namespace(pid_t pid, int flags) { static int login_machine(sd_bus *bus, char **args, unsigned n) { _cleanup_bus_message_unref_ sd_bus_message *reply = NULL, *reply2 = NULL, *reply3 = NULL; _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; - _cleanup_bus_unref_ sd_bus *container_bus = NULL; + _cleanup_bus_close_unref_ sd_bus *container_bus = NULL; + _cleanup_(pty_forward_freep) PTYForward *forward = NULL; + _cleanup_event_unref_ sd_event *event = NULL; _cleanup_close_ int master = -1; _cleanup_free_ char *getty = NULL; const char *path, *pty, *p; uint32_t leader; sigset_t mask; - int r; + int r, ret = 0; assert(bus); assert(args); @@ -566,6 +678,14 @@ static int login_machine(sd_bus *bus, char **args, unsigned n) { return -ENOTSUP; } + r = sd_event_default(&event); + if (r < 0) + return log_error_errno(r, "Failed to get event loop: %m"); + + r = sd_bus_attach_event(bus, event, 0); + if (r < 0) + return log_error_errno(r, "Failed to attach bus to event loop: %m"); + r = sd_bus_call_method( bus, "org.freedesktop.machine1", @@ -593,26 +713,20 @@ static int login_machine(sd_bus *bus, char **args, unsigned n) { &error, &reply2, "u"); - if (r < 0) { - log_error("Failed to retrieve PID of leader: %s", strerror(-r)); - return r; - } + if (r < 0) + return log_error_errno(r, "Failed to retrieve PID of leader: %m"); r = sd_bus_message_read(reply2, "u", &leader); 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) { - log_error("Failed to acquire pseudo tty: %s", strerror(-master)); - return master; - } + if (master < 0) + return log_error_errno(master, "Failed to acquire pseudo tty: %m"); pty = ptsname(master); - if (!pty) { - log_error("Failed to get pty name: %m"); - return -errno; - } + if (!pty) + return log_error_errno(errno, "Failed to get pty name: %m"); p = startswith(pty, "/dev/pts/"); if (!p) { @@ -621,19 +735,15 @@ static int login_machine(sd_bus *bus, char **args, unsigned n) { } 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; - } + if (r < 0) + return log_error_errno(r, "Failed to get container bus: %m"); getty = strjoin("container-getty@", p, ".service", NULL); if (!getty) return log_oom(); - if (unlockpt(master) < 0) { - log_error("Failed to unlock tty: %m"); - return -errno; - } + if (unlockpt(master) < 0) + return log_error_errno(errno, "Failed to unlock tty: %m"); r = sd_bus_call_method(container_bus, "org.freedesktop.systemd1", @@ -655,21 +765,28 @@ static int login_machine(sd_bus *bus, char **args, unsigned n) { log_info("Connected to container %s. Press ^] three times within 1s to exit session.", args[1]); - r = process_pty(master, &mask, 0, 0); - if (r < 0) { - log_error("Failed to process pseudo tty: %s", strerror(-r)); - return r; - } + sd_event_add_signal(event, NULL, SIGINT, NULL, NULL); + sd_event_add_signal(event, NULL, SIGTERM, NULL, NULL); + + r = pty_forward_new(event, master, &forward); + if (r < 0) + return log_error_errno(r, "Failed to create PTY forwarder: %m"); + + r = sd_event_loop(event); + if (r < 0) + return log_error_errno(r, "Failed to run event loop: %m"); + + forward = pty_forward_free(forward); fputc('\n', stdout); log_info("Connection to container %s terminated.", args[1]); - return 0; + sd_event_get_exit_code(event, &ret); + return ret; } -static int help(void) { - +static void help(void) { printf("%s [OPTIONS...] {COMMAND} ...\n\n" "Send control commands to or query the virtual machine and container registration manager.\n\n" " -h --help Show this help\n" @@ -687,13 +804,12 @@ static int help(void) { " 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" + " poweroff NAME... Power off one or more containers\n" " reboot NAME... Reboot one or more containers\n" - " login NAME Get a login prompt on a container\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; } static int parse_argv(int argc, char *argv[]) { @@ -725,12 +841,13 @@ static int parse_argv(int argc, char *argv[]) { assert(argc >= 0); assert(argv); - while ((c = getopt_long(argc, argv, "hp:als:H:M:", options, NULL)) >= 0) { + while ((c = getopt_long(argc, argv, "hp:als:H:M:", options, NULL)) >= 0) switch (c) { case 'h': - return help(); + help(); + return 0; case ARG_VERSION: puts(PACKAGE_STRING); @@ -792,7 +909,6 @@ static int parse_argv(int argc, char *argv[]) { default: assert_not_reached("Unhandled option"); } - } return 1; } @@ -814,6 +930,7 @@ static int machinectl_main(sd_bus *bus, int argc, char *argv[]) { { "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 }, }; @@ -879,7 +996,7 @@ static int machinectl_main(sd_bus *bus, int argc, char *argv[]) { } int main(int argc, char*argv[]) { - _cleanup_bus_unref_ sd_bus *bus = NULL; + _cleanup_bus_close_unref_ sd_bus *bus = NULL; int r; setlocale(LC_ALL, ""); @@ -892,7 +1009,7 @@ int main(int argc, char*argv[]) { r = bus_open_transport(arg_transport, arg_host, false, &bus); if (r < 0) { - log_error("Failed to create bus connection: %s", strerror(-r)); + log_error_errno(r, "Failed to create bus connection: %m"); goto finish; }