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#include "runtime_args.h"
#include "cli.h"
#include "config.h"
#include "utils.h"
static void add_argv(GPtrArray *argv_array, ...) G_GNUC_NULL_TERMINATED;
static void add_argv(GPtrArray *argv_array, ...);
static void end_argv(GPtrArray *argv_array);
static void print_argv(GPtrArray *argv);
static void append_argv(gpointer data, gpointer user_data);
GPtrArray *configure_runtime_args(const char *const csname)
{
GPtrArray *runtime_argv = g_ptr_array_new();
add_argv(runtime_argv, opt_runtime_path, NULL);
/* Generate the cmdline. */
if (!opt_exec && opt_systemd_cgroup)
add_argv(runtime_argv, "--systemd-cgroup", NULL);
if (opt_runtime_args) {
size_t n_runtime_args = 0;
while (opt_runtime_args[n_runtime_args])
add_argv(runtime_argv, opt_runtime_args[n_runtime_args++], NULL);
}
/* Set the exec arguments. */
if (opt_exec) {
add_argv(runtime_argv, "exec", "--pid-file", opt_container_pid_file, "--process", opt_exec_process_spec, "--detach", NULL);
} else {
char *command;
if (opt_restore_path)
command = "restore";
else
command = "create";
add_argv(runtime_argv, command, "--bundle", opt_bundle_path, "--pid-file", opt_container_pid_file, NULL);
if (opt_no_pivot)
add_argv(runtime_argv, "--no-pivot", NULL);
if (opt_no_new_keyring)
add_argv(runtime_argv, "--no-new-keyring", NULL);
if (opt_restore_path) {
/*
* 'runc restore' is different from 'runc create'
* as the container is immediately running after
* a restore. Therefore the '--detach is needed'
* so that runc returns once the container is running.
*
* '--image-path' is the path to the checkpoint
* which will be become important when using pre-copy
* migration where multiple checkpoints can be created
* to reduce the container downtime during migration.
*
* '--work-path' is the directory CRIU will run in and
* also place its log files.
*/
add_argv(runtime_argv, "--detach", "--image-path", opt_restore_path, "--work-path", opt_bundle_path, NULL);
}
}
/*
* opt_runtime_opts can contain 'runc restore' or 'runc exec' options like
* '--tcp-established' or '--preserve-fds'. Instead of listing each option as
* a special conmon option, this (--runtime-opt) provides
* a generic interface to pass all those options to conmon
* without requiring a code change for each new option.
*/
if (opt_runtime_opts) {
size_t n_runtime_opts = 0;
while (opt_runtime_opts[n_runtime_opts])
add_argv(runtime_argv, opt_runtime_opts[n_runtime_opts++], NULL);
}
if (csname != NULL) {
add_argv(runtime_argv, "--console-socket", csname, NULL);
}
/* Container name comes last. */
add_argv(runtime_argv, opt_cid, NULL);
end_argv(runtime_argv);
print_argv(runtime_argv);
return runtime_argv;
}
static void print_argv(GPtrArray *runtime_argv)
{
if (log_level != TRACE_LEVEL)
return;
GString *runtime_args_string = g_string_sized_new(BUF_SIZE);
g_ptr_array_foreach(runtime_argv, append_argv, runtime_args_string);
ntracef("calling runtime args: %s", runtime_args_string->str);
}
static void append_argv(gpointer data, gpointer user_data)
{
if (!data)
return;
char *arg = (char *)data;
GString *args = (GString *)user_data;
g_string_append(args, arg);
g_string_append_c(args, ' ');
}
static void add_argv(GPtrArray *argv_array, ...) G_GNUC_NULL_TERMINATED;
static void add_argv(GPtrArray *argv_array, ...)
{
va_list args;
char *arg;
va_start(args, argv_array);
while ((arg = va_arg(args, char *)))
g_ptr_array_add(argv_array, arg);
va_end(args);
}
static void end_argv(GPtrArray *argv_array)
{
g_ptr_array_add(argv_array, NULL);
}
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