2747 static int check_unshare_flags(unsigned long unshare_flags)  in check_unshare_flags()  argument
2749 	if (unshare_flags & ~(CLONE_THREAD|CLONE_FS|CLONE_NEWNS|CLONE_SIGHAND|  in check_unshare_flags()
2760 	if (unshare_flags & (CLONE_THREAD | CLONE_SIGHAND | CLONE_VM)) {  in check_unshare_flags()
2764 	if (unshare_flags & (CLONE_SIGHAND | CLONE_VM)) {  in check_unshare_flags()
2768 	if (unshare_flags & CLONE_VM) {  in check_unshare_flags()
2779 static int unshare_fs(unsigned long unshare_flags, struct fs_struct **new_fsp)  in unshare_fs()  argument
2783 	if (!(unshare_flags & CLONE_FS) || !fs)  in unshare_fs()
2800 static int unshare_fd(unsigned long unshare_flags, struct files_struct **new_fdp)  in unshare_fd()  argument
2805 	if ((unshare_flags & CLONE_FILES) &&  in unshare_fd()
2823 int ksys_unshare(unsigned long unshare_flags)  in ksys_unshare()  argument
2836 	if (unshare_flags & CLONE_NEWUSER)  in ksys_unshare()
2837 		unshare_flags |= CLONE_THREAD | CLONE_FS;  in ksys_unshare()
2841 	if (unshare_flags & CLONE_VM)  in ksys_unshare()
2842 		unshare_flags |= CLONE_SIGHAND;  in ksys_unshare()
2846 	if (unshare_flags & CLONE_SIGHAND)  in ksys_unshare()
2847 		unshare_flags |= CLONE_THREAD;  in ksys_unshare()
2851 	if (unshare_flags & CLONE_NEWNS)  in ksys_unshare()
2852 		unshare_flags |= CLONE_FS;  in ksys_unshare()
2854 	err = check_unshare_flags(unshare_flags);  in ksys_unshare()
2862 	if (unshare_flags & (CLONE_NEWIPC|CLONE_SYSVSEM))  in ksys_unshare()
2864 	err = unshare_fs(unshare_flags, &new_fs);  in ksys_unshare()
2867 	err = unshare_fd(unshare_flags, &new_fd);  in ksys_unshare()
2870 	err = unshare_userns(unshare_flags, &new_cred);  in ksys_unshare()
2873 	err = unshare_nsproxy_namespaces(unshare_flags, &new_nsproxy,  in ksys_unshare()
2885 		if (unshare_flags & CLONE_NEWIPC) {  in ksys_unshare()
2939 SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags)  in SYSCALL_DEFINE1()  argument
2941 	return ksys_unshare(unshare_flags);  in SYSCALL_DEFINE1()