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552636b931
And move the existing one to fsmount_attr.sh to be more precise.
Now the fsmount_flags[] is generated from the mount.h like below.
The ilog2() + 1 is an existing pattern to handle bit flags.
$ cat tools/perf/trace/beauty/generated/fsmount_arrays.c
static const char *fsmount_flags[] = {
[ilog2(0x00000001) + 1] = "CLOEXEC",
[ilog2(0x00000002) + 1] = "NAMESPACE",
};
It was found by Sashiko during the review.
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
// SPDX-License-Identifier: LGPL-2.1
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/*
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* trace/beauty/fsmount.c
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*
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* Copyright (C) 2019, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
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*/
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#include "trace/beauty/beauty.h"
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#include <linux/log2.h>
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#include <sys/mount.h>
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#ifndef MOUNT_ATTR__ATIME
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#define MOUNT_ATTR__ATIME 0x00000070 /* Setting on how atime should be updated */
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#endif
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#ifndef MOUNT_ATTR_RELATIME
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#define MOUNT_ATTR_RELATIME 0x00000000 /* - Update atime relative to mtime/ctime. */
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#endif
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static size_t fsmount__scnprintf_flags(unsigned long flags, char *bf, size_t size, bool show_prefix)
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{
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#include "trace/beauty/generated/fsmount_arrays.c"
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static DEFINE_STRARRAY(fsmount_flags, "FSMOUNT_");
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return strarray__scnprintf_flags(&strarray__fsmount_flags, bf, size, show_prefix, flags);
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}
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size_t syscall_arg__scnprintf_fsmount_flags(char *bf, size_t size, struct syscall_arg *arg)
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{
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unsigned long flags = arg->val;
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return fsmount__scnprintf_flags(flags, bf, size, arg->show_string_prefix);
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}
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static size_t fsmount__scnprintf_attr_flags(unsigned long flags, char *bf, size_t size, bool show_prefix)
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{
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#include "trace/beauty/generated/fsmount_attr_arrays.c"
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static DEFINE_STRARRAY(fsmount_attr_flags, "MOUNT_ATTR_");
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size_t printed = 0;
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if ((flags & ~MOUNT_ATTR__ATIME) != 0)
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printed += strarray__scnprintf_flags(&strarray__fsmount_attr_flags, bf, size, show_prefix, flags);
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if ((flags & MOUNT_ATTR__ATIME) == MOUNT_ATTR_RELATIME) {
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printed += scnprintf(bf + printed, size - printed, "%s%s%s",
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printed ? "|" : "", show_prefix ? "MOUNT_ATTR_" : "", "RELATIME");
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}
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return printed;
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}
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size_t syscall_arg__scnprintf_fsmount_attr_flags(char *bf, size_t size, struct syscall_arg *arg)
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{
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unsigned long flags = arg->val;
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return fsmount__scnprintf_attr_flags(flags, bf, size, arg->show_string_prefix);
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}
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