// SPDX-License-Identifier: LGPL-2.1
/*
* trace / beauty / mount_flags . c
*
* Copyright ( C ) 2018 , Red Hat Inc , Arnaldo Carvalho de Melo < acme @ redhat . com >
*/
#include "trace/beauty/beauty.h"
#include <linux/compiler.h>
#include <linux/kernel.h>
#include <linux/log2.h>
#include <sys/mount.h>
static size_t mount__scnprintf_flags(unsigned long flags, char *bf, size_t size, bool show_prefix)
{
#include "trace/beauty/generated/mount_flags_array.c"
static DEFINE_STRARRAY(mount_flags, "MS_" );
return strarray__scnprintf_flags(&strarray__mount_flags, bf, size, show_prefix, flags);
}
unsigned long syscall_arg__mask_val_mount_flags(struct syscall_arg *arg __maybe_unused, unsigned long flags)
{
// do_mount in fs/namespace.c:
/*
* Pre - 0 . 97 versions of mount ( ) didn ' t have a flags word . When the
* flags word was introduced its top half was required to have the
* magic value 0 xC0ED , and this remained so until 2 . 4 . 0 - test9 .
* Therefore , if this magic number is present , it carries no
* information and must be discarded .
*/
if ((flags & MS_MGC_MSK) == MS_MGC_VAL)
flags &= ~MS_MGC_MSK;
return flags;
}
size_t syscall_arg__scnprintf_mount_flags(char *bf, size_t size, struct syscall_arg *arg)
{
unsigned long flags = arg->val;
return mount__scnprintf_flags(flags, bf, size, arg->show_string_prefix);
}
Messung V0.5 in Prozent C=92 H=100 G=95
¤ Dauer der Verarbeitung: 0.7 Sekunden
(vorverarbeitet am 2026-10-12)
¤
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