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
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