text: // SPDX-License-Identifier: LGPL-2.1
  /*
   * trace/beauty/cone.c
   *
   *  Copyright (C) 2017, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
   */
  
  #include "trace/beauty/beauty.h"
  #include <linux/kernel.h>
  #include <sys/types.h>
  #include <uapi/linux/sched.h>
  
  static size_t clone__scnprintf_flags(unsigned long flags, char *bf, size_t size, bool show_prefix)
  {
  	const char *prefix = "CLONE_";
  	int printed = 0;
  
  #define	P_FLAG(n) \
  	if (flags & CLONE_##n) { \
  		printed += scnprintf(bf + printed, size - printed, "%s%s%s", printed ? "|" : "", show_prefix ? prefix : "", #n); \
  		flags &= ~CLONE_##n; \
  	}
  
  	P_FLAG(VM);
  	P_FLAG(FS);
  	P_FLAG(FILES);
  	P_FLAG(SIGHAND);
  	P_FLAG(PIDFD);
  	P_FLAG(PTRACE);
  	P_FLAG(VFORK);
  	P_FLAG(PARENT);
  	P_FLAG(THREAD);
  	P_FLAG(NEWNS);
  	P_FLAG(SYSVSEM);
  	P_FLAG(SETTLS);
  	P_FLAG(PARENT_SETTID);
  	P_FLAG(CHILD_CLEARTID);
  	P_FLAG(DETACHED);
  	P_FLAG(UNTRACED);
  	P_FLAG(CHILD_SETTID);
  	P_FLAG(NEWCGROUP);
  	P_FLAG(NEWUTS);
  	P_FLAG(NEWIPC);
  	P_FLAG(NEWUSER);
  	P_FLAG(NEWPID);
  	P_FLAG(NEWNET);
  	P_FLAG(IO);
  	P_FLAG(CLEAR_SIGHAND);
  #undef P_FLAG
  
  	if (flags)
  		printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags);
  
  	return printed;
  }
  
  size_t syscall_arg__scnprintf_clone_flags(char *bf, size_t size, struct syscall_arg *arg)
  {
  	unsigned long flags = arg->val;
  	enum syscall_clone_args {
  		SCC_FLAGS	  = (1 << 0),
  		SCC_CHILD_STACK	  = (1 << 1),
  		SCC_PARENT_TIDPTR = (1 << 2),
  		SCC_CHILD_TIDPTR  = (1 << 3),
  		SCC_TLS		  = (1 << 4),
  	};
  	if (!(flags & CLONE_PARENT_SETTID))
  		arg->mask |= SCC_PARENT_TIDPTR;
  
  	if (!(flags & (CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID)))
  		arg->mask |= SCC_CHILD_TIDPTR;
  
  	if (!(flags & CLONE_SETTLS))
  		arg->mask |= SCC_TLS;
  
  	return clone__scnprintf_flags(flags, bf, size, arg->show_string_prefix);
  }
  