1 /* Struct stat/stat64 to stat/stat64 conversion for Linux. 2 Copyright (C) 2020-2021 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library. If not, see 17 <https://www.gnu.org/licenses/>. */ 18 19 #include <stat_t64_cp.h> 20 #include <string.h> 21 #include <errno.h> 22 #include <time.h> 23 24 #if __TIMESIZE != 64 25 26 static inline bool in_time_t_range(__time64_t t)27in_time_t_range (__time64_t t) 28 { 29 time_t s = t; 30 return s == t; 31 } 32 33 static inline struct timespec valid_timespec64_to_timespec(const struct __timespec64 ts64)34valid_timespec64_to_timespec (const struct __timespec64 ts64) 35 { 36 struct timespec ts; 37 38 ts.tv_sec = (time_t) ts64.tv_sec; 39 ts.tv_nsec = ts64.tv_nsec; 40 41 return ts; 42 } 43 44 int __cp_stat64_t64_stat64(const struct __stat64_t64 * st64_t64,struct stat64 * st64)45__cp_stat64_t64_stat64 (const struct __stat64_t64 *st64_t64, 46 struct stat64 *st64) 47 { 48 if (! in_time_t_range (st64_t64->st_atim.tv_sec) 49 || ! in_time_t_range (st64_t64->st_mtim.tv_sec) 50 || ! in_time_t_range (st64_t64->st_ctim.tv_sec)) 51 { 52 __set_errno (EOVERFLOW); 53 return -1; 54 } 55 56 /* Clear both pad and reserved fields. */ 57 memset (st64, 0, sizeof (*st64)); 58 59 st64->st_dev = st64_t64->st_dev, 60 st64->st_ino = st64_t64->st_ino; 61 st64->st_mode = st64_t64->st_mode; 62 st64->st_nlink = st64_t64->st_nlink; 63 st64->st_uid = st64_t64->st_uid; 64 st64->st_gid = st64_t64->st_gid; 65 st64->st_rdev = st64_t64->st_rdev; 66 st64->st_size = st64_t64->st_size; 67 st64->st_blksize = st64_t64->st_blksize; 68 st64->st_blocks = st64_t64->st_blocks; 69 st64->st_atim = valid_timespec64_to_timespec (st64_t64->st_atim); 70 st64->st_mtim = valid_timespec64_to_timespec (st64_t64->st_mtim); 71 st64->st_ctim = valid_timespec64_to_timespec (st64_t64->st_ctim); 72 73 return 0; 74 } 75 #endif 76