1// SPDX-License-Identifier: LGPL-2.1
 2/*
 3 * trace/beauty/fs_at_flags.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 <sys/types.h>
10#include <linux/fcntl.h>
11#include <linux/log2.h>
12
13/*
14 * uapi/linux/fcntl.h does not keep a copy in tools headers directory,
15 * for system with kernel versions before v5.8, need to sync AT_EACCESS macro.
16 */
17#ifndef AT_EACCESS
18#define AT_EACCESS 0x200
19#endif
20
21#include "trace/beauty/generated/fs_at_flags_array.c"
22static DEFINE_STRARRAY(fs_at_flags, "AT_");
23
24static size_t fs_at__scnprintf_flags(unsigned long flags, char *bf, size_t size, bool show_prefix)
25{
26	return strarray__scnprintf_flags(&strarray__fs_at_flags, bf, size, show_prefix, flags);
27}
28
29size_t syscall_arg__scnprintf_fs_at_flags(char *bf, size_t size, struct syscall_arg *arg)
30{
31	bool show_prefix = arg->show_string_prefix;
32	int flags = arg->val;
33
34	return fs_at__scnprintf_flags(flags, bf, size, show_prefix);
35}
36
37static size_t faccessat2__scnprintf_flags(unsigned long flags, char *bf, size_t size, bool show_prefix)
38{
39	int printed = 0;
40
41	// AT_EACCESS is the same as AT_REMOVEDIR, that is in fs_at_flags_array,
42	// special case it here.
43	if (flags & AT_EACCESS) {
44		flags &= ~AT_EACCESS;
45		printed += scnprintf(bf + printed, size - printed, "%sEACCESS%s",
46				     show_prefix ? strarray__fs_at_flags.prefix : "", flags ? "|" : "");
47	}
48
49	return strarray__scnprintf_flags(&strarray__fs_at_flags, bf + printed, size - printed, show_prefix, flags);
50}
51
52size_t syscall_arg__scnprintf_faccessat2_flags(char *bf, size_t size, struct syscall_arg *arg)
53{
54	bool show_prefix = arg->show_string_prefix;
55	int flags = arg->val;
56
57	return faccessat2__scnprintf_flags(flags, bf, size, show_prefix);
58}