#include "gpt.h"
#include "siphash24.h"
#include "copy.h"
+#include "base-filesystem.h"
#ifdef HAVE_SECCOMP
#include "seccomp-util.h"
}
static int setup_resolv_conf(const char *dest) {
- char _cleanup_free_ *where = NULL;
+ _cleanup_free_ char *where = NULL;
assert(dest);
}
/*
- * Return 0 in case the container is being rebooted, has been shut
- * down or exited successfully. On failures a negative value is
- * returned.
+ * Return values:
+ * < 0 : wait_for_terminate() failed to get the state of the
+ * container, the container was terminated by a signal, or
+ * failed for an unknown reason. No change is made to the
+ * container argument.
+ * > 0 : The program executed in the container terminated with an
+ * error. The exit code of the program executed in the
+ * container is returned. No change is made to the container
+ * argument.
+ * 0 : The container is being rebooted, has been shut down or exited
+ * successfully. The container argument has been set to either
+ * CONTAINER_TERMINATED or CONTAINER_REBOOTED.
*
- * The status of the container "CONTAINER_TERMINATED" or
- * "CONTAINER_REBOOTED" will be saved in the container argument
+ * That is, success is indicated by a return value of zero, and an
+ * error is indicated by a non-zero value.
*/
static int wait_for_container(pid_t pid, ContainerStatus *container) {
int r;
siginfo_t status;
r = wait_for_terminate(pid, &status);
- if (r < 0)
+ if (r < 0) {
+ log_warning("Failed to wait for container: %s", strerror(-r));
return r;
+ }
switch (status.si_code) {
case CLD_EXITED:
} else {
log_error("Container %s failed with error code %i.",
arg_machine, status.si_status);
- r = -1;
}
break;
if (arg_boot) {
if (path_is_os_tree(arg_directory) <= 0) {
- log_error("Directory %s doesn't look like an OS root directory (/etc/os-release is missing). Refusing.", arg_directory);
+ log_error("Directory %s doesn't look like an OS root directory (os-release file is missing). Refusing.", arg_directory);
goto finish;
}
} else {
srv_device, srv_device_rw) < 0)
goto child_fail;
+ r = base_filesystem_create(arg_directory);
+ if (r < 0) {
+ log_error("Failed to create the base filesystem: %s", strerror(-r));
+ goto child_fail;
+ }
+
/* Turn directory into bind mount */
if (mount(arg_directory, arg_directory, "bind", MS_BIND|MS_REC, NULL) < 0) {
log_error("Failed to make bind mount: %m");
* join its cgroup which might limit what it can do */
r = eventfd_child_succeeded(eventfds[1]);
eventfds[1] = safe_close(eventfds[1]);
- if (r < 0)
- goto check_container_status;
- r = register_machine(pid);
- if (r < 0)
- goto finish;
+ if (r >= 0) {
+ r = register_machine(pid);
+ if (r < 0)
+ goto finish;
- r = move_network_interfaces(pid);
- if (r < 0)
- goto finish;
+ r = move_network_interfaces(pid);
+ if (r < 0)
+ goto finish;
- r = setup_veth(pid, veth_name);
- if (r < 0)
- goto finish;
+ r = setup_veth(pid, veth_name);
+ if (r < 0)
+ goto finish;
- r = setup_bridge(veth_name);
- if (r < 0)
- goto finish;
+ r = setup_bridge(veth_name);
+ if (r < 0)
+ goto finish;
- r = setup_macvlan(pid);
- if (r < 0)
- goto finish;
+ r = setup_macvlan(pid);
+ if (r < 0)
+ goto finish;
- /* Block SIGCHLD here, before notifying child.
- * process_pty() will handle it with the other signals. */
- r = sigprocmask(SIG_BLOCK, &mask_chld, NULL);
- if (r < 0)
- goto finish;
+ /* Block SIGCHLD here, before notifying child.
+ * process_pty() will handle it with the other signals. */
+ r = sigprocmask(SIG_BLOCK, &mask_chld, NULL);
+ if (r < 0)
+ goto finish;
- /* Reset signal to default */
- r = default_signals(SIGCHLD, -1);
- if (r < 0)
- goto finish;
+ /* Reset signal to default */
+ r = default_signals(SIGCHLD, -1);
+ if (r < 0)
+ goto finish;
- /* Notify the child that the parent is ready with all
- * its setup, and that the child can now hand over
- * control to the code to run inside the container. */
- r = eventfd_send_state(eventfds[0],
- EVENTFD_PARENT_SUCCEEDED);
- eventfds[0] = safe_close(eventfds[0]);
- if (r < 0)
- goto finish;
+ /* Notify the child that the parent is ready with all
+ * its setup, and that the child can now hand over
+ * control to the code to run inside the container. */
+ r = eventfd_send_state(eventfds[0], EVENTFD_PARENT_SUCCEEDED);
+ eventfds[0] = safe_close(eventfds[0]);
+ if (r < 0)
+ goto finish;
- k = process_pty(master, &mask, arg_boot ? pid : 0, SIGRTMIN+3);
- if (k < 0) {
- r = EXIT_FAILURE;
- break;
- }
+ k = process_pty(master, &mask, arg_boot ? pid : 0, SIGRTMIN+3);
+ if (k < 0) {
+ r = EXIT_FAILURE;
+ break;
+ }
- if (!arg_quiet)
- putc('\n', stdout);
+ if (!arg_quiet)
+ putc('\n', stdout);
- /* Kill if it is not dead yet anyway */
- terminate_machine(pid);
+ /* Kill if it is not dead yet anyway */
+ terminate_machine(pid);
+ }
-check_container_status:
- /* Redundant, but better safe than sorry */
+ /* Normally redundant, but better safe than sorry */
kill(pid, SIGKILL);
r = wait_for_container(pid, &container_status);
pid = 0;
if (r < 0) {
+ /* We failed to wait for the container, or the
+ * container exited abnormally */
r = EXIT_FAILURE;
break;
- } else if (container_status == CONTAINER_TERMINATED)
+ } else if (r > 0 || container_status == CONTAINER_TERMINATED)
+ /* The container exited with a non-zero
+ * status, or with zero status and no reboot
+ * was requested. */
break;
/* CONTAINER_REBOOTED, loop again */
~ianmdlvl / elogind.git / blobdiff