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// 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(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);
#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);
}
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