#include <errno.h>
#include <string.h>
-#include <sys/capability.h>
#include <arpa/inet.h>
#include "bus-util.h"
#include "fileio.h"
#include "in-addr-util.h"
#include "local-addresses.h"
+#include "path-util.h"
+#include "bus-internal.h"
#include "machine.h"
+#include "machine-dbus.h"
static int property_get_id(
sd_bus *bus,
assert(message);
assert(m);
+ if (m->class != MACHINE_CONTAINER)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Requesting IP address data is only supported on container machines.");
+
r = readlink_malloc("/proc/self/ns/net", &us);
if (r < 0)
return sd_bus_error_set_errno(error, r);
assert(message);
assert(m);
+ if (m->class != MACHINE_CONTAINER)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Requesting OS release data is only supported on container machines.");
+
r = namespace_open(m->leader, NULL, &mntns_fd, NULL, &root_fd);
if (r < 0)
return r;
}
int bus_machine_method_open_pty(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
- _cleanup_close_ int pidnsfd = -1, mntnsfd = -1, rootfd = -1;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- _cleanup_close_pair_ int pair[2] = { -1, -1 };
+ _cleanup_free_ char *pty_name = NULL;
_cleanup_close_ int master = -1;
- union {
- struct cmsghdr cmsghdr;
- uint8_t buf[CMSG_SPACE(sizeof(int))];
- } control = {};
- struct msghdr mh = {
- .msg_control = &control,
- .msg_controllen = sizeof(control),
- };
Machine *m = userdata;
- struct cmsghdr *cmsg;
- siginfo_t si;
- pid_t child;
int r;
assert(bus);
assert(message);
assert(m);
- r = namespace_open(m->leader, &pidnsfd, &mntnsfd, NULL, &rootfd);
+ if (m->class != MACHINE_CONTAINER)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Opening pseudo TTYs is only supported on container machines.");
+
+ master = openpt_in_namespace(m->leader, O_RDWR|O_NOCTTY|O_CLOEXEC);
+ if (master < 0)
+ return master;
+
+ r = ptsname_malloc(master, &pty_name);
if (r < 0)
return r;
- if (socketpair(AF_UNIX, SOCK_DGRAM, 0, pair) < 0)
- return -errno;
+ r = sd_bus_message_new_method_return(message, &reply);
+ if (r < 0)
+ return r;
- child = fork();
- if (child < 0)
- return -errno;
+ r = sd_bus_message_append(reply, "hs", master, pty_name);
+ if (r < 0)
+ return r;
- if (child == 0) {
- pair[0] = safe_close(pair[0]);
+ return sd_bus_send(bus, reply, NULL);
+}
- r = namespace_enter(pidnsfd, mntnsfd, -1, rootfd);
- if (r < 0)
- _exit(EXIT_FAILURE);
+int bus_machine_method_open_login(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ _cleanup_free_ char *pty_name = NULL, *getty = NULL;
+ _cleanup_bus_unref_ sd_bus *container_bus = NULL;
+ _cleanup_close_ int master = -1;
+ Machine *m = userdata;
+ const char *p;
+ int r;
- master = posix_openpt(O_RDWR|O_NOCTTY|O_CLOEXEC);
- if (master < 0)
- _exit(EXIT_FAILURE);
+ if (m->class != MACHINE_CONTAINER)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Opening logins is only supported on container machines.");
- 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));
+ r = bus_verify_polkit_async(
+ message,
+ CAP_SYS_ADMIN,
+ "org.freedesktop.machine1.login",
+ false,
+ &m->manager->polkit_registry,
+ error);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return 1; /* Will call us back */
- mh.msg_controllen = cmsg->cmsg_len;
+ master = openpt_in_namespace(m->leader, O_RDWR|O_NOCTTY|O_CLOEXEC);
+ if (master < 0)
+ return master;
- if (sendmsg(pair[1], &mh, MSG_NOSIGNAL) < 0)
- _exit(EXIT_FAILURE);
+ r = ptsname_malloc(master, &pty_name);
+ if (r < 0)
+ return r;
- _exit(EXIT_SUCCESS);
- }
+ p = path_startswith(pty_name, "/dev/pts/");
+ if (!p)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "PTS name %s is invalid", pty_name);
- pair[1] = safe_close(pair[1]);
+ if (unlockpt(master) < 0)
+ return -errno;
- r = wait_for_terminate(child, &si);
+ r = sd_bus_new(&container_bus);
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;
+#ifdef ENABLE_KDBUS
+ asprintf(&container_bus->address, "x-machine-kernel:pid=" PID_FMT ";x-machine-unix:pid=" PID_FMT, m->leader, m->leader);
+#else
+ asprintf(&container_bus->address, "x-machine-kernel:pid=" PID_FMT, m->leader);
+#endif
+ if (!container_bus->address)
+ return -ENOMEM;
- 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;
+ container_bus->bus_client = true;
+ container_bus->trusted = false;
+ container_bus->is_system = true;
- fds = (int*) CMSG_DATA(cmsg);
- n_fds = (cmsg->cmsg_len - CMSG_LEN(0)) / sizeof(int);
+ r = sd_bus_start(container_bus);
+ if (r < 0)
+ return r;
- if (n_fds != 1) {
- close_many(fds, n_fds);
- return -EIO;
- }
+ getty = strjoin("container-getty@", p, ".service", NULL);
+ if (!getty)
+ return -ENOMEM;
- master = fds[0];
- }
+ r = sd_bus_call_method(
+ container_bus,
+ "org.freedesktop.systemd1",
+ "/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "StartUnit",
+ error, NULL,
+ "ss", getty, "replace");
+ if (r < 0)
+ return r;
- if (master < 0)
- return -EIO;
+ container_bus = sd_bus_unref(container_bus);
r = sd_bus_message_new_method_return(message, &reply);
if (r < 0)
return r;
- r = sd_bus_message_append(reply, "hs", master, ptsname(master));
+ r = sd_bus_message_append(reply, "hs", master, pty_name);
if (r < 0)
return r;
SD_BUS_METHOD("GetAddresses", NULL, "a(iay)", bus_machine_method_get_addresses, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("GetOSRelease", NULL, "a{ss}", bus_machine_method_get_os_release, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("OpenPTY", NULL, "hs", bus_machine_method_open_pty, 0),
+ SD_BUS_METHOD("OpenLogin", NULL, "hs", bus_machine_method_open_login, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_VTABLE_END
};
~ianmdlvl / elogind.git / blobdiff