fsmount.c

 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
19static size_t fsmount__scnprintf_attr_flags(unsigned long flags, char *bf, size_t size, bool show_prefix)
20{
21#include "trace/beauty/generated/fsmount_arrays.c"
22       static DEFINE_STRARRAY(fsmount_attr_flags, "MOUNT_ATTR_");
23       size_t printed = 0;
24
25       if ((flags & ~MOUNT_ATTR__ATIME) != 0)
26	       printed += strarray__scnprintf_flags(&strarray__fsmount_attr_flags, bf, size, show_prefix, flags);
27
28       if ((flags & MOUNT_ATTR__ATIME) == MOUNT_ATTR_RELATIME) {
29	       printed += scnprintf(bf + printed, size - printed, "%s%s%s",
30			            printed ? "|" : "", show_prefix ? "MOUNT_ATTR_" : "", "RELATIME");
31       }
32
33       return printed;
34}
35
36size_t syscall_arg__scnprintf_fsmount_attr_flags(char *bf, size_t size, struct syscall_arg *arg)
37{
38	unsigned long flags = arg->val;
39
40	return fsmount__scnprintf_attr_flags(flags, bf, size, arg->show_string_prefix);
41}