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aa03f722f3
A new struct __stat{64}_t64 type is added with the required
__timespec64 time definition. Only LFS is added, 64-bit time with
32-bit offsets is not supposed to be supported (no existing glibc
configuration supports such a combination). It is done with an extra
__NR_statx call plus a conversion to the new __stat{64}_t64 type.
The statx call is done only for 32-bit time_t ABIs.
Internally some extra routines to copy from/to struct stat{64}
to struct __stat{64} used on multiple implementations (stat, fstat,
lstat, and fstatat) are added on a extra implementation
(stat_t64_cp.c). Alse some extra routines to copy from statx to
__stat{64} is added on statx_cp.c.
Checked with a build for all affected ABIs. I also checked on x86_64,
i686, powerpc, powerpc64le, sparcv9, sparc64, s390, and s390x.
Reviewed-by: Lukasz Majewski <lukma@denx.de>
86 lines
3.0 KiB
C
86 lines
3.0 KiB
C
/* Struct stat with 64-bit time support.
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Copyright (C) 2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _BITS_STRUCT_STAT_TIME64_H
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#define _BITS_STRUCT_STAT_TIME64_H 1
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#if __TIMESIZE == 64
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# define __stat64_t64 stat64
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#else
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# ifdef __USE_LARGEFILE64
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# include <endian.h>
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/* The definition should be equal to the 'struct __timespec64' internal
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layout. */
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# if BYTE_ORDER == BIG_ENDIAN
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# define __fieldts64(name) \
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__time64_t name; __int32_t :32; __int32_t name ## nsec
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# else
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# define __fieldts64(name) \
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__time64_t name; __int32_t name ## nsec; __int32_t :32
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# endif
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/* Workaround for the definition from struct_stat.h */
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# undef st_atime
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# undef st_mtime
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# undef st_ctime
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struct __stat64_t64
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{
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__dev_t st_dev; /* Device. */
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__ino64_t st_ino; /* file serial number. */
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__mode_t st_mode; /* File mode. */
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__nlink_t st_nlink; /* Link count. */
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__uid_t st_uid; /* User ID of the file's owner. */
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__gid_t st_gid; /* Group ID of the file's group.*/
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__dev_t st_rdev; /* Device number, if device. */
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__off64_t st_size; /* Size of file, in bytes. */
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__blksize_t st_blksize; /* Optimal block size for I/O. */
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__blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
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# ifdef __USE_XOPEN2K8
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/* Nanosecond resolution timestamps are stored in a format
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equivalent to 'struct timespec'. This is the type used
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whenever possible but the Unix namespace rules do not allow the
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identifier 'timespec' to appear in the <sys/stat.h> header.
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Therefore we have to handle the use of this header in strictly
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standard-compliant sources special. */
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struct __timespec64 st_atim; /* Time of last access. */
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struct __timespec64 st_mtim; /* Time of last modification. */
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struct __timespec64 st_ctim; /* Time of last status change. */
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# define st_atime st_atim.tv_sec /* Backward compatibility. */
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# define st_mtime st_mtim.tv_sec
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# define st_ctime st_ctim.tv_sec
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# else
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__fieldts64 (st_atime);
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__fieldts64 (st_mtime);
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__fieldts64 (st_ctime);
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# endif /* __USE_XOPEN2K8 */
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};
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# define _STATBUF_ST_BLKSIZE
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# define _STATBUF_ST_RDEV
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# define _STATBUF_ST_NSEC
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# undef __fieldts64
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# endif /* __USE_LARGEFILE64 */
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# endif /* __TIMESIZE == 64 */
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#endif /* _BITS_STRUCT_STAT_TIME64_H */
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