return r;
}
-static int openpt_in_namespace(pid_t pid, int flags) {
- _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 = {};
- struct msghdr mh = {
- .msg_control = &control,
- .msg_controllen = sizeof(control),
- };
- struct cmsghdr *cmsg;
- int master = -1, r;
- pid_t child;
- siginfo_t si;
-
- assert(pid > 0);
-
- r = namespace_open(pid, &pidnsfd, &mntnsfd, NULL, &rootfd);
- if (r < 0)
- return r;
-
- if (socketpair(AF_UNIX, SOCK_DGRAM, 0, pair) < 0)
- return -errno;
-
- child = fork();
- if (child < 0)
- return -errno;
-
- if (child == 0) {
- pair[0] = safe_close(pair[0]);
-
- r = namespace_enter(pidnsfd, mntnsfd, -1, rootfd);
- if (r < 0)
- _exit(EXIT_FAILURE);
-
- master = posix_openpt(flags);
- if (master < 0)
- _exit(EXIT_FAILURE);
-
- cmsg = CMSG_FIRSTHDR(&mh);
- cmsg->cmsg_level = SOL_SOCKET;
- cmsg->cmsg_type = SCM_RIGHTS;
- cmsg->cmsg_len = CMSG_LEN(sizeof(int));
- memcpy(CMSG_DATA(cmsg), &master, sizeof(int));
-
- mh.msg_controllen = cmsg->cmsg_len;
-
- if (sendmsg(pair[1], &mh, MSG_NOSIGNAL) < 0)
- _exit(EXIT_FAILURE);
-
- _exit(EXIT_SUCCESS);
- }
-
- pair[1] = safe_close(pair[1]);
-
- 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))
- if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
- int *fds;
- unsigned n_fds;
-
- fds = (int*) CMSG_DATA(cmsg);
- n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
-
- if (n_fds != 1) {
- close_many(fds, n_fds);
- return -EIO;
- }
-
- master = fds[0];
- }
-
- if (master < 0)
- return -EIO;
-
- return master;
-}
-
static int login_machine(int argc, char *argv[], void *userdata) {
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = 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;
+ int master = -1, r, ret = 0;
sd_bus *bus = userdata;
- const char *pty, *p;
- pid_t leader;
+ const char *pty;
sigset_t mask;
- int r, ret = 0;
+ char last_char = 0;
assert(bus);
- if (arg_transport != BUS_TRANSPORT_LOCAL) {
+ if (arg_transport != BUS_TRANSPORT_LOCAL &&
+ arg_transport != BUS_TRANSPORT_CONTAINER) {
log_error("Login only supported on local machines.");
return -ENOTSUP;
}
if (r < 0)
return log_error_errno(r, "Failed to attach bus to event loop: %m");
- r = machine_get_leader(bus, argv[1], &leader);
- if (r < 0)
- return r;
-
- master = openpt_in_namespace(leader, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NDELAY);
- if (master < 0)
- return log_error_errno(master, "Failed to acquire pseudo tty: %m");
-
- pty = ptsname(master);
- if (!pty)
- return log_error_errno(errno, "Failed to get pty name: %m");
-
- p = startswith(pty, "/dev/pts/");
- if (!p) {
- log_error("Invalid pty name %s.", pty);
- return -EIO;
- }
-
- r = sd_bus_open_system_container(&container_bus, argv[1]);
- 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)
- return log_error_errno(errno, "Failed to unlock tty: %m");
-
- r = sd_bus_call_method(container_bus,
- "org.freedesktop.systemd1",
- "/org/freedesktop/systemd1",
- "org.freedesktop.systemd1.Manager",
- "StartUnit",
- &error, &reply,
- "ss", getty, "replace");
+ r = sd_bus_call_method(bus,
+ "org.freedesktop.machine1",
+ "/org/freedesktop/machine1",
+ "org.freedesktop.machine1.Manager",
+ "OpenMachineLogin",
+ &error,
+ &reply,
+ "s", argv[1]);
if (r < 0) {
- log_error("Failed to start getty service: %s", bus_error_message(&error, r));
+ log_error("Failed to get machine PTY: %s", bus_error_message(&error, -r));
return r;
}
- container_bus = sd_bus_unref(container_bus);
+ r = sd_bus_message_read(reply, "hs", &master, &pty);
+ if (r < 0)
+ return bus_log_parse_error(r);
assert_se(sigemptyset(&mask) == 0);
sigset_add_many(&mask, SIGWINCH, SIGTERM, SIGINT, -1);
if (r < 0)
return log_error_errno(r, "Failed to run event loop: %m");
+ pty_forward_last_char(forward, &last_char);
+
forward = pty_forward_free(forward);
- fputc('\n', stdout);
+ if (last_char != '\n')
+ fputc('\n', stdout);
log_info("Connection to container %s terminated.", argv[1]);
~ianmdlvl / elogind.git / blobdiff