3307 static int check_unshare_flags(unsigned long unshare_flags)  in check_unshare_flags()  argument
3309 	if (unshare_flags & ~(CLONE_THREAD|CLONE_FS|CLONE_NEWNS|CLONE_SIGHAND|  in check_unshare_flags()
3321 	if (unshare_flags & (CLONE_THREAD | CLONE_SIGHAND | CLONE_VM)) {  in check_unshare_flags()
3325 	if (unshare_flags & (CLONE_SIGHAND | CLONE_VM)) {  in check_unshare_flags()
3329 	if (unshare_flags & CLONE_VM) {  in check_unshare_flags()
3340 static int unshare_fs(unsigned long unshare_flags, struct fs_struct **new_fsp)  in unshare_fs()  argument
3344 	if (!(unshare_flags & CLONE_FS) || !fs)  in unshare_fs()
3361 int unshare_fd(unsigned long unshare_flags, unsigned int max_fds,  in unshare_fd()  argument
3367 	if ((unshare_flags & CLONE_FILES) &&  in unshare_fd()
3385 int ksys_unshare(unsigned long unshare_flags)  in ksys_unshare()  argument
3398 	if (unshare_flags & CLONE_NEWUSER)  in ksys_unshare()
3399 		unshare_flags |= CLONE_THREAD | CLONE_FS;  in ksys_unshare()
3403 	if (unshare_flags & CLONE_VM)  in ksys_unshare()
3404 		unshare_flags |= CLONE_SIGHAND;  in ksys_unshare()
3408 	if (unshare_flags & CLONE_SIGHAND)  in ksys_unshare()
3409 		unshare_flags |= CLONE_THREAD;  in ksys_unshare()
3413 	if (unshare_flags & CLONE_NEWNS)  in ksys_unshare()
3414 		unshare_flags |= CLONE_FS;  in ksys_unshare()
3416 	err = check_unshare_flags(unshare_flags);  in ksys_unshare()
3424 	if (unshare_flags & (CLONE_NEWIPC|CLONE_SYSVSEM))  in ksys_unshare()
3426 	err = unshare_fs(unshare_flags, &new_fs);  in ksys_unshare()
3429 	err = unshare_fd(unshare_flags, NR_OPEN_MAX, &new_fd);  in ksys_unshare()
3432 	err = unshare_userns(unshare_flags, &new_cred);  in ksys_unshare()
3435 	err = unshare_nsproxy_namespaces(unshare_flags, &new_nsproxy,  in ksys_unshare()
3453 		if (unshare_flags & CLONE_NEWIPC) {  in ksys_unshare()
3504 SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags)  in SYSCALL_DEFINE1()  argument
3506 	return ksys_unshare(unshare_flags);  in SYSCALL_DEFINE1()