59 lines · c
1// SPDX-License-Identifier: LGPL-2.12/*3 * trace/beauty/fs_at_flags.c4 *5 * Copyright (C) 2017, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>6 */7 8#include "trace/beauty/beauty.h"9#include <sys/types.h>10#include <linux/fcntl.h>11#include <linux/log2.h>12 13/*14 * uapi/linux/fcntl.h does not keep a copy in tools headers directory,15 * for system with kernel versions before v5.8, need to sync AT_EACCESS macro.16 */17#ifndef AT_EACCESS18#define AT_EACCESS 0x20019#endif20 21#include "trace/beauty/generated/fs_at_flags_array.c"22static DEFINE_STRARRAY(fs_at_flags, "AT_");23 24static size_t fs_at__scnprintf_flags(unsigned long flags, char *bf, size_t size, bool show_prefix)25{26 return strarray__scnprintf_flags(&strarray__fs_at_flags, bf, size, show_prefix, flags);27}28 29size_t syscall_arg__scnprintf_fs_at_flags(char *bf, size_t size, struct syscall_arg *arg)30{31 bool show_prefix = arg->show_string_prefix;32 int flags = arg->val;33 34 return fs_at__scnprintf_flags(flags, bf, size, show_prefix);35}36 37static size_t faccessat2__scnprintf_flags(unsigned long flags, char *bf, size_t size, bool show_prefix)38{39 int printed = 0;40 41 // AT_EACCESS is the same as AT_REMOVEDIR, that is in fs_at_flags_array,42 // special case it here.43 if (flags & AT_EACCESS) {44 flags &= ~AT_EACCESS;45 printed += scnprintf(bf + printed, size - printed, "%sEACCESS%s",46 show_prefix ? strarray__fs_at_flags.prefix : "", flags ? "|" : "");47 }48 49 return strarray__scnprintf_flags(&strarray__fs_at_flags, bf + printed, size - printed, show_prefix, flags);50}51 52size_t syscall_arg__scnprintf_faccessat2_flags(char *bf, size_t size, struct syscall_arg *arg)53{54 bool show_prefix = arg->show_string_prefix;55 int flags = arg->val;56 57 return faccessat2__scnprintf_flags(flags, bf, size, show_prefix);58}59