1 // SPDX-License-Identifier: LGPL-2.1 2 /* 3 * trace/beauty/fs_at_flags.c 4 * 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_EACCESS 18 #define AT_EACCESS 0x200 19 #endif 20 21 #include "trace/beauty/generated/fs_at_flags_array.c" 22 static DEFINE_STRARRAY(fs_at_flags, "AT_"); 23 24 static 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 29 size_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 37 static 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 52 size_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