// 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); }