1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* Copyright (c) 2021 SUSE LLC 3 * Richard Palethorpe <rpalethorpe@suse.com> 4 */ 5 6 #define TST_NO_DEFAULT_MAIN 7 8 #include <stddef.h> 9 10 #include "tst_test.h" 11 #include "lapi/sched.h" 12 tst_clone(const struct tst_clone_args * tst_args)13pid_t tst_clone(const struct tst_clone_args *tst_args) 14 { 15 struct clone_args args = { 16 .flags = tst_args->flags, 17 .exit_signal = tst_args->exit_signal, 18 .cgroup = tst_args->cgroup, 19 }; 20 int flags; 21 pid_t pid = -1; 22 23 tst_flush(); 24 25 errno = ENOSYS; 26 if (__NR_clone3 != __LTP__NR_INVALID_SYSCALL) 27 pid = syscall(__NR_clone3, &args, sizeof(args)); 28 29 if (pid == -1 && errno != ENOSYS) 30 return -1; 31 32 if (pid != -1) 33 return pid; 34 35 flags = args.exit_signal | args.flags; 36 37 #ifdef __s390x__ 38 pid = syscall(__NR_clone, NULL, flags); 39 #else 40 pid = syscall(__NR_clone, flags, NULL); 41 #endif 42 43 if (pid == -1) 44 return -2; 45 46 return pid; 47 } 48