| 1 | /* fxstatat64 used on fstatat64, Linux implementation. |
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| 2 | Copyright (C) 2005-2022 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #define __fxstatat __redirect___fxstatat |
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| 20 | #include <sys/stat.h> |
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| 21 | #undef __fxstatat |
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| 22 | #include <fcntl.h> |
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| 23 | #include <kernel_stat.h> |
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| 24 | #include <sysdep.h> |
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| 25 | #include <xstatconv.h> |
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| 26 | #include <statx_cp.h> |
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| 27 | #include <shlib-compat.h> |
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| 28 | |
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| 29 | #if LIB_COMPAT(libc, GLIBC_2_4, GLIBC_2_33) |
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| 30 | |
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| 31 | /* Get information about the file FD in BUF. */ |
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| 32 | |
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| 33 | int |
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| 34 | __fxstatat64 (int vers, int fd, const char *file, struct stat64 *st, int flag) |
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| 35 | { |
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| 36 | #if XSTAT_IS_XSTAT64 |
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| 37 | # ifdef __NR_newfstatat |
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| 38 | /* 64-bit kABI, e.g. aarch64, ia64, powerpc64*, s390x, riscv64, and |
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| 39 | x86_64. */ |
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| 40 | if (vers == _STAT_VER_KERNEL || vers == _STAT_VER_LINUX) |
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| 41 | return INLINE_SYSCALL_CALL (newfstatat, fd, file, st, flag); |
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| 42 | # elif defined __NR_fstatat64 |
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| 43 | /* 64-bit kABI outlier, e.g. sparc64. */ |
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| 44 | struct stat64 st64; |
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| 45 | int r = INLINE_SYSCALL_CALL (fstatat64, fd, file, &st64, flag); |
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| 46 | return r ?: __xstat32_conv (vers, &st64, (struct stat *) st); |
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| 47 | # else |
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| 48 | /* New 32-bit kABIs with only 64-bit time_t support, e.g. arc, riscv32. */ |
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| 49 | if (vers == _STAT_VER_KERNEL) |
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| 50 | { |
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| 51 | struct statx tmp; |
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| 52 | int r = INLINE_SYSCALL_CALL (statx, fd, file, AT_NO_AUTOMOUNT | flag, |
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| 53 | STATX_BASIC_STATS, &tmp); |
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| 54 | if (r == 0) |
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| 55 | __cp_stat64_statx (st, &tmp); |
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| 56 | return r; |
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| 57 | } |
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| 58 | # endif |
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| 59 | #else |
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| 60 | /* All kABIs with non-LFS support, e.g. arm, csky, i386, hppa, m68k, |
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| 61 | microblaze, mips32, nios2, sh, powerpc32, and sparc32. */ |
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| 62 | if (vers == _STAT_VER_LINUX) |
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| 63 | return INLINE_SYSCALL_CALL (fstatat64, fd, file, st, flag); |
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| 64 | #endif |
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| 65 | return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL); |
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| 66 | } |
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| 67 | |
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| 68 | #if XSTAT_IS_XSTAT64 |
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| 69 | strong_alias (__fxstatat64, __fxstatat) |
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| 70 | #endif |
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| 71 | |
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| 72 | #endif /* LIB_COMPAT(libc, GLIBC_2_4, GLIBC_2_33) */ |
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| 73 | |
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