1 /* 2 * trace/beauty/cone.c 3 * 4 * Copyright (C) 2017, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> 5 * 6 * Released under the GPL v2. (and only v2, not any later version) 7 */ 8 9 #include "trace/beauty/beauty.h" 10 #include <linux/kernel.h> 11 #include <sys/types.h> 12 #include <uapi/linux/sched.h> 13 14 static size_t clone__scnprintf_flags(unsigned long flags, char *bf, size_t size) 15 { 16 int printed = 0; 17 18 #define P_FLAG(n) \ 19 if (flags & CLONE_##n) { \ 20 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ 21 flags &= ~CLONE_##n; \ 22 } 23 24 P_FLAG(VM); 25 P_FLAG(FS); 26 P_FLAG(FILES); 27 P_FLAG(SIGHAND); 28 P_FLAG(PTRACE); 29 P_FLAG(VFORK); 30 P_FLAG(PARENT); 31 P_FLAG(THREAD); 32 P_FLAG(NEWNS); 33 P_FLAG(SYSVSEM); 34 P_FLAG(SETTLS); 35 P_FLAG(PARENT_SETTID); 36 P_FLAG(CHILD_CLEARTID); 37 P_FLAG(DETACHED); 38 P_FLAG(UNTRACED); 39 P_FLAG(CHILD_SETTID); 40 P_FLAG(NEWCGROUP); 41 P_FLAG(NEWUTS); 42 P_FLAG(NEWIPC); 43 P_FLAG(NEWUSER); 44 P_FLAG(NEWPID); 45 P_FLAG(NEWNET); 46 P_FLAG(IO); 47 #undef P_FLAG 48 49 if (flags) 50 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); 51 52 return printed; 53 } 54 55 size_t syscall_arg__scnprintf_clone_flags(char *bf, size_t size, struct syscall_arg *arg) 56 { 57 unsigned long flags = arg->val; 58 enum syscall_clone_args { 59 SCC_FLAGS = (1 << 0), 60 SCC_CHILD_STACK = (1 << 1), 61 SCC_PARENT_TIDPTR = (1 << 2), 62 SCC_CHILD_TIDPTR = (1 << 3), 63 SCC_TLS = (1 << 4), 64 }; 65 if (!(flags & CLONE_PARENT_SETTID)) 66 arg->mask |= SCC_PARENT_TIDPTR; 67 68 if (!(flags & (CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID))) 69 arg->mask |= SCC_CHILD_TIDPTR; 70 71 if (!(flags & CLONE_SETTLS)) 72 arg->mask |= SCC_TLS; 73 74 return clone__scnprintf_flags(flags, bf, size); 75 } 76