1 /* 2 * trace/beauty/kcmp.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 <machine.h> 13 #include <uapi/linux/kcmp.h> 14 15 #include "trace/beauty/generated/kcmp_type_array.c" 16 17 size_t syscall_arg__scnprintf_kcmp_idx(char *bf, size_t size, struct syscall_arg *arg) 18 { 19 unsigned long fd = arg->val; 20 int type = syscall_arg__val(arg, 2); 21 pid_t pid; 22 23 if (type != KCMP_FILE) 24 return syscall_arg__scnprintf_long(bf, size, arg); 25 26 pid = syscall_arg__val(arg, arg->idx == 3 ? 0 : 1); /* idx1 -> pid1, idx2 -> pid2 */ 27 return pid__scnprintf_fd(arg->trace, pid, fd, bf, size); 28 } 29 30 static size_t kcmp__scnprintf_type(int type, char *bf, size_t size) 31 { 32 static DEFINE_STRARRAY(kcmp_types); 33 return strarray__scnprintf(&strarray__kcmp_types, bf, size, "%d", type); 34 } 35 36 size_t syscall_arg__scnprintf_kcmp_type(char *bf, size_t size, struct syscall_arg *arg) 37 { 38 unsigned long type = arg->val; 39 40 if (type != KCMP_FILE) 41 arg->mask |= (1 << 3) | (1 << 4); /* Ignore idx1 and idx2 */ 42 43 return kcmp__scnprintf_type(type, bf, size); 44 } 45