1 /* fxstat64 using Linux fstat64/statx system call.
2 Copyright (C) 1997-2022 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 #define __fxstat __redirect___fxstat
20 #include <sys/stat.h>
21 #undef __fxstat
22 #include <fcntl.h>
23 #include <kernel_stat.h>
24 #include <sysdep.h>
25 #include <xstatconv.h>
26 #include <statx_cp.h>
27 #include <shlib-compat.h>
28
29 #if LIB_COMPAT(libc, GLIBC_2_0, GLIBC_2_33)
30
31 /* Get information about the file FD in BUF. */
32
33 int
___fxstat64(int vers,int fd,struct stat64 * buf)34 ___fxstat64 (int vers, int fd, struct stat64 *buf)
35 {
36 #if XSTAT_IS_XSTAT64
37 # ifdef __NR_fstat64
38 /* 64-bit kABI outlier, e.g. sparc64. */
39 if (vers == _STAT_VER_KERNEL)
40 return INLINE_SYSCALL_CALL (fstat, fd, buf);
41 else
42 {
43 struct stat64 st64;
44 int r = INLINE_SYSCALL_CALL (fstat64, fd, &st64);
45 return r ?: __xstat32_conv (vers, &st64, (struct stat *) buf);
46 }
47 # elif defined __NR_fstat
48 /* 64-bit kABI, e.g. aarch64, ia64, powerpc64*, s390x, riscv64,
49 and x86_64. */
50 if (vers == _STAT_VER_KERNEL || vers == _STAT_VER_LINUX)
51 return INLINE_SYSCALL_CALL (fstat, fd, buf);
52 return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
53 # else
54 /* New 32-bit kABIs with only 64-bit time_t support, e.g. arc, riscv32. */
55 struct statx tmp;
56 int r = INLINE_SYSCALL_CALL (statx, fd, "", AT_EMPTY_PATH,
57 STATX_BASIC_STATS, &tmp);
58 if (r == 0)
59 __cp_stat64_statx (buf, &tmp);
60 return r;
61 # endif
62 #else
63 /* All kABIs with non-LFS support, e.g. arm, csky, i386, hppa, m68k,
64 microblaze, mips32, nios2, sh, powerpc32, and sparc32. */
65 return INLINE_SYSCALL_CALL (fstat64, fd, buf);
66 #endif /* XSTAT_IS_XSTAT64 */
67 }
68
69 #if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
70 versioned_symbol (libc, ___fxstat64, __fxstat64, GLIBC_2_2);
71 strong_alias (___fxstat64, __old__fxstat64)
72 compat_symbol (libc, __old__fxstat64, __fxstat64, GLIBC_2_1);
73 #else
74 strong_alias (___fxstat64, __fxstat64)
75 #endif
76
77 #if XSTAT_IS_XSTAT64
78 strong_alias (___fxstat64, __fxstat)
79 #endif
80
81 #endif /* LIB_COMPAT */
82