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