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089ef2f4c8
In the environment of ubuntu 20.04 (the version of kernel headers is
5.4), there is an error in building perf:
CC trace/beauty/fs_at_flags.o
trace/beauty/fs_at_flags.c: In function ‘faccessat2__scnprintf_flags’:
trace/beauty/fs_at_flags.c:35:14: error: ‘AT_EACCESS’ undeclared (first use in this function); did you mean ‘DN_ACCESS’?
35 | if (flags & AT_EACCESS) {
| ^~~~~~~~~~
| DN_ACCESS
trace/beauty/fs_at_flags.c:35:14: note: each undeclared identifier is reported only once for each function it appears in
commit 8a1ad44135 ("tools headers: Remove now unused copies of
uapi/{fcntl,openat2}.h and asm/fcntl.h") removes fcntl.h from tools
headers directory, and fs_at_flags.c uses the 'AT_EACCESS' macro.
This macro was introduced in the kernel version v5.8. For system with a
kernel version older than this version, it will cause compilation to
fail.
Fixes: 8a1ad44135 ("tools headers: Remove now unused copies of uapi/{fcntl,openat2}.h and asm/fcntl.h")
Signed-off-by: Yang Jihong <yangjihong@bytedance.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20240403122558.1438841-1-yangjihong@bytedance.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
// SPDX-License-Identifier: LGPL-2.1
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/*
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* trace/beauty/fs_at_flags.c
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*
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* Copyright (C) 2017, 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 <sys/types.h>
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#include <linux/fcntl.h>
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#include <linux/log2.h>
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/*
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* uapi/linux/fcntl.h does not keep a copy in tools headers directory,
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* for system with kernel versions before v5.8, need to sync AT_EACCESS macro.
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*/
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#ifndef AT_EACCESS
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#define AT_EACCESS 0x200
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#endif
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#include "trace/beauty/generated/fs_at_flags_array.c"
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static DEFINE_STRARRAY(fs_at_flags, "AT_");
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static size_t fs_at__scnprintf_flags(unsigned long flags, char *bf, size_t size, bool show_prefix)
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{
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return strarray__scnprintf_flags(&strarray__fs_at_flags, bf, size, show_prefix, flags);
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}
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size_t syscall_arg__scnprintf_fs_at_flags(char *bf, size_t size, struct syscall_arg *arg)
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{
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bool show_prefix = arg->show_string_prefix;
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int flags = arg->val;
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return fs_at__scnprintf_flags(flags, bf, size, show_prefix);
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}
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static size_t faccessat2__scnprintf_flags(unsigned long flags, char *bf, size_t size, bool show_prefix)
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{
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int printed = 0;
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// AT_EACCESS is the same as AT_REMOVEDIR, that is in fs_at_flags_array,
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// special case it here.
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if (flags & AT_EACCESS) {
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flags &= ~AT_EACCESS;
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printed += scnprintf(bf + printed, size - printed, "%sEACCESS%s",
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show_prefix ? strarray__fs_at_flags.prefix : "", flags ? "|" : "");
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}
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return strarray__scnprintf_flags(&strarray__fs_at_flags, bf + printed, size - printed, show_prefix, flags);
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}
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size_t syscall_arg__scnprintf_faccessat2_flags(char *bf, size_t size, struct syscall_arg *arg)
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{
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bool show_prefix = arg->show_string_prefix;
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int flags = arg->val;
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return faccessat2__scnprintf_flags(flags, bf, size, show_prefix);
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}
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