xref: /linux/tools/perf/trace/beauty/fsmount.c (revision ab5fce87a778cb780a05984a2ca448f2b41aafbf)
1 // SPDX-License-Identifier: LGPL-2.1
2 /*
3  * trace/beauty/fsmount.c
4  *
5  *  Copyright (C) 2019, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
6  */
7 
8 #include "trace/beauty/beauty.h"
9 #include <linux/log2.h>
10 #include <sys/mount.h>
11 
12 #ifndef MOUNT_ATTR__ATIME
13 #define MOUNT_ATTR__ATIME	0x00000070 /* Setting on how atime should be updated */
14 #endif
15 #ifndef MOUNT_ATTR_RELATIME
16 #define MOUNT_ATTR_RELATIME	0x00000000 /* - Update atime relative to mtime/ctime. */
17 #endif
18 
19 
fsmount__scnprintf_flags(unsigned long flags,char * bf,size_t size,bool show_prefix)20 static size_t fsmount__scnprintf_flags(unsigned long flags, char *bf, size_t size, bool show_prefix)
21 {
22 #include "trace/beauty/generated/fsmount_arrays.c"
23 	static DEFINE_STRARRAY(fsmount_flags, "FSMOUNT_");
24 
25 	return strarray__scnprintf_flags(&strarray__fsmount_flags, bf, size, show_prefix, flags);
26 }
27 
syscall_arg__scnprintf_fsmount_flags(char * bf,size_t size,struct syscall_arg * arg)28 size_t syscall_arg__scnprintf_fsmount_flags(char *bf, size_t size, struct syscall_arg *arg)
29 {
30 	unsigned long flags = arg->val;
31 
32 	return fsmount__scnprintf_flags(flags, bf, size, arg->show_string_prefix);
33 }
34 
fsmount__scnprintf_attr_flags(unsigned long flags,char * bf,size_t size,bool show_prefix)35 static size_t fsmount__scnprintf_attr_flags(unsigned long flags, char *bf, size_t size, bool show_prefix)
36 {
37 #include "trace/beauty/generated/fsmount_attr_arrays.c"
38        static DEFINE_STRARRAY(fsmount_attr_flags, "MOUNT_ATTR_");
39        size_t printed = 0;
40 
41        if ((flags & ~MOUNT_ATTR__ATIME) != 0)
42 	       printed += strarray__scnprintf_flags(&strarray__fsmount_attr_flags, bf, size, show_prefix, flags);
43 
44        if ((flags & MOUNT_ATTR__ATIME) == MOUNT_ATTR_RELATIME) {
45 	       printed += scnprintf(bf + printed, size - printed, "%s%s%s",
46 			            printed ? "|" : "", show_prefix ? "MOUNT_ATTR_" : "", "RELATIME");
47        }
48 
49        return printed;
50 }
51 
syscall_arg__scnprintf_fsmount_attr_flags(char * bf,size_t size,struct syscall_arg * arg)52 size_t syscall_arg__scnprintf_fsmount_attr_flags(char *bf, size_t size, struct syscall_arg *arg)
53 {
54 	unsigned long flags = arg->val;
55 
56 	return fsmount__scnprintf_attr_flags(flags, bf, size, arg->show_string_prefix);
57 }
58