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"
22 static DEFINE_STRARRAY(fs_at_flags, "AT_");
23
24 static 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
29 size_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
37 static 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
52 size_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 }
59
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