1 // SPDX-License-Identifier: LGPL-2.1 2 /* 3 * trace/beauty/kcmp.c 4 * 5 * Copyright (C) 2017, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> 6 */ 7 8 #include "trace/beauty/beauty.h" 9 #include <linux/kernel.h> 10 #include <sys/types.h> 11 #include <machine.h> 12 #include <uapi/linux/kcmp.h> 13 14 #include "trace/beauty/generated/kcmp_type_array.c" 15 16 size_t syscall_arg__scnprintf_kcmp_idx(char *bf, size_t size, struct syscall_arg *arg) 17 { 18 unsigned long fd = arg->val; 19 int type = syscall_arg__val(arg, 2); 20 pid_t pid; 21 22 if (type != KCMP_FILE) 23 return syscall_arg__scnprintf_long(bf, size, arg); 24 25 pid = syscall_arg__val(arg, arg->idx == 3 ? 0 : 1); /* idx1 -> pid1, idx2 -> pid2 */ 26 return pid__scnprintf_fd(arg->trace, pid, fd, bf, size); 27 } 28 29 static size_t kcmp__scnprintf_type(int type, char *bf, size_t size, bool show_prefix) 30 { 31 static DEFINE_STRARRAY(kcmp_types, "KCMP_"); 32 return strarray__scnprintf(&strarray__kcmp_types, bf, size, "%d", show_prefix, type); 33 } 34 35 size_t syscall_arg__scnprintf_kcmp_type(char *bf, size_t size, struct syscall_arg *arg) 36 { 37 unsigned long type = arg->val; 38 39 if (type != KCMP_FILE) 40 arg->mask |= (1 << 3) | (1 << 4); /* Ignore idx1 and idx2 */ 41 42 return kcmp__scnprintf_type(type, bf, size, arg->show_string_prefix); 43 } 44