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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>
80 lines
2.8 KiB
C
80 lines
2.8 KiB
C
/* Struct statx to stat/stat64 conversion for Linux.
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Copyright (C) 2018-2020 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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#include <stddef.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <statx_cp.h>
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#if !defined(__NR_fstat64) || !defined(__NR_fstatat64)
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void
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__cp_stat64_statx (struct stat64 *to, struct statx *from)
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{
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memset (to, 0, sizeof (struct stat64));
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to->st_dev = ((from->stx_dev_minor & 0xff) | (from->stx_dev_major << 8)
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| ((from->stx_dev_minor & ~0xff) << 12));
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to->st_rdev = ((from->stx_rdev_minor & 0xff) | (from->stx_rdev_major << 8)
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| ((from->stx_rdev_minor & ~0xff) << 12));
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to->st_ino = from->stx_ino;
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to->st_mode = from->stx_mode;
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to->st_nlink = from->stx_nlink;
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to->st_uid = from->stx_uid;
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to->st_gid = from->stx_gid;
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to->st_atime = from->stx_atime.tv_sec;
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to->st_atim.tv_nsec = from->stx_atime.tv_nsec;
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to->st_mtime = from->stx_mtime.tv_sec;
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to->st_mtim.tv_nsec = from->stx_mtime.tv_nsec;
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to->st_ctime = from->stx_ctime.tv_sec;
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to->st_ctim.tv_nsec = from->stx_ctime.tv_nsec;
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to->st_size = from->stx_size;
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to->st_blocks = from->stx_blocks;
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to->st_blksize = from->stx_blksize;
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}
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#endif
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#if (__WORDSIZE == 32 \
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&& (!defined __SYSCALL_WORDSIZE || __SYSCALL_WORDSIZE == 32))
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void
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__cp_stat64_t64_statx (struct __stat64_t64 *to, const struct statx *from)
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{
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/* Clear both pad and reserved fields. */
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memset (to, 0, sizeof (*to));
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to->st_dev = ((from->stx_dev_minor & 0xff) | (from->stx_dev_major << 8)
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| ((from->stx_dev_minor & ~0xff) << 12));
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to->st_ino = from->stx_ino;
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to->st_mode = from->stx_mode;
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to->st_nlink = from->stx_nlink;
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to->st_uid = from->stx_uid;
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to->st_gid = from->stx_gid;
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to->st_rdev = ((from->stx_rdev_minor & 0xff) | (from->stx_rdev_major << 8)
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| ((from->stx_rdev_minor & ~0xff) << 12));
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to->st_size = from->stx_size;
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to->st_blksize = from->stx_blksize;
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to->st_blocks = from->stx_blocks;
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to->st_atime = from->stx_atime.tv_sec;
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to->st_atim.tv_nsec = from->stx_atime.tv_nsec;
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to->st_mtime = from->stx_mtime.tv_sec;
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to->st_mtim.tv_nsec = from->stx_mtime.tv_nsec;
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to->st_ctime = from->stx_ctime.tv_sec;
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to->st_ctim.tv_nsec = from->stx_ctime.tv_nsec;
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}
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#endif
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