384 lines
13 KiB
Diff
384 lines
13 KiB
Diff
commit 5dad6ffbb2b76215cfcd38c3001778536ada8e8a
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Author: Florian Weimer <fweimer@redhat.com>
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Date: Wed Jun 12 12:04:09 2019 +0200
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<sys/stat.h>: Use Linux UAPI header for statx if available and useful
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This will automatically import new STATX_* constants. It also avoids
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a conflict between <sys/stat.h> and <linux/stat.h>.
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Conflicts:
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io/bits/statx.h
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(Year range in copyright header.)
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diff --git a/include/bits/statx-generic.h b/include/bits/statx-generic.h
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new file mode 100644
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index 0000000000000000..21674721b6d85265
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--- /dev/null
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+++ b/include/bits/statx-generic.h
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@@ -0,0 +1 @@
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+#include <io/bits/statx-generic.h>
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diff --git a/include/bits/types/struct_statx.h b/include/bits/types/struct_statx.h
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new file mode 100644
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index 0000000000000000..82add6484f2ee963
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--- /dev/null
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+++ b/include/bits/types/struct_statx.h
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@@ -0,0 +1 @@
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+#include <io/bits/types/struct_statx.h>
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diff --git a/include/bits/types/struct_statx_timestamp.h b/include/bits/types/struct_statx_timestamp.h
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new file mode 100644
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index 0000000000000000..9fbedd5749fc1172
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--- /dev/null
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+++ b/include/bits/types/struct_statx_timestamp.h
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@@ -0,0 +1 @@
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+#include <io/bits/types/struct_statx_timestamp.h>
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diff --git a/io/Makefile b/io/Makefile
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index ec5c6d7a2fb87914..787a5c550ab64b17 100644
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--- a/io/Makefile
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+++ b/io/Makefile
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@@ -25,7 +25,9 @@ include ../Makeconfig
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headers := sys/stat.h bits/stat.h sys/statfs.h bits/statfs.h sys/vfs.h \
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sys/statvfs.h bits/statvfs.h fcntl.h sys/fcntl.h bits/fcntl.h \
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poll.h sys/poll.h bits/poll.h bits/fcntl2.h bits/poll2.h \
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- bits/statx.h utime.h ftw.h fts.h sys/sendfile.h
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+ bits/statx.h bits/statx-generic.h bits/types/struct_statx.h \
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+ bits/types/struct_statx_timestamp.h \
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+ utime.h ftw.h fts.h sys/sendfile.h
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routines := \
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utime \
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diff --git a/io/bits/statx-generic.h b/io/bits/statx-generic.h
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new file mode 100644
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index 0000000000000000..1f5abbf148681e9b
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--- /dev/null
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+++ b/io/bits/statx-generic.h
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@@ -0,0 +1,60 @@
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+/* Generic statx-related definitions and declarations.
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+ Copyright (C) 2018-2019 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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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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+
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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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+
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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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+ <http://www.gnu.org/licenses/>. */
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+
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+/* This interface is based on <linux/stat.h> in Linux. */
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+
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+#ifndef _SYS_STAT_H
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+# error Never include <bits/statx-generic.h> directly, include <sys/stat.h> instead.
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+#endif
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+
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+#include <bits/types/struct_statx_timestamp.h>
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+#include <bits/types/struct_statx.h>
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+
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+#ifndef STATX_TYPE
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+# define STATX_TYPE 0x0001U
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+# define STATX_MODE 0x0002U
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+# define STATX_NLINK 0x0004U
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+# define STATX_UID 0x0008U
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+# define STATX_GID 0x0010U
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+# define STATX_ATIME 0x0020U
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+# define STATX_MTIME 0x0040U
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+# define STATX_CTIME 0x0080U
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+# define STATX_INO 0x0100U
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+# define STATX_SIZE 0x0200U
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+# define STATX_BLOCKS 0x0400U
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+# define STATX_BASIC_STATS 0x07ffU
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+# define STATX_ALL 0x0fffU
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+# define STATX_BTIME 0x0800U
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+# define STATX__RESERVED 0x80000000U
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+
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+# define STATX_ATTR_COMPRESSED 0x0004
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+# define STATX_ATTR_IMMUTABLE 0x0010
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+# define STATX_ATTR_APPEND 0x0020
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+# define STATX_ATTR_NODUMP 0x0040
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+# define STATX_ATTR_ENCRYPTED 0x0800
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+# define STATX_ATTR_AUTOMOUNT 0x1000
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+#endif /* !STATX_TYPE */
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+
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+__BEGIN_DECLS
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+
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+/* Fill *BUF with information about PATH in DIRFD. */
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+int statx (int __dirfd, const char *__restrict __path, int __flags,
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+ unsigned int __mask, struct statx *__restrict __buf)
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+ __THROW __nonnull ((2, 5));
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+
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+__END_DECLS
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diff --git a/io/bits/statx.h b/io/bits/statx.h
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index e31254e3617bb17b..b3147bfa8af1818f 100644
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--- a/io/bits/statx.h
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+++ b/io/bits/statx.h
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@@ -1,5 +1,5 @@
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-/* statx-related definitions and declarations.
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- Copyright (C) 2018 Free Software Foundation, Inc.
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+/* statx-related definitions and declarations. Generic version.
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+ Copyright (C) 2018-2019 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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@@ -19,73 +19,8 @@
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/* This interface is based on <linux/stat.h> in Linux. */
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#ifndef _SYS_STAT_H
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-# error Never include <bits/stat.x.h> directly, include <sys/stat.h> instead.
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+# error Never include <bits/statx.h> directly, include <sys/stat.h> instead.
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#endif
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-struct statx_timestamp
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-{
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- __int64_t tv_sec;
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- __uint32_t tv_nsec;
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- __int32_t __statx_timestamp_pad1[1];
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-};
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-
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-/* Warning: The kernel may add additional fields to this struct in the
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- future. Only use this struct for calling the statx function, not
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- for storing data. (Expansion will be controlled by the mask
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- argument of the statx function.) */
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-struct statx
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-{
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- __uint32_t stx_mask;
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- __uint32_t stx_blksize;
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- __uint64_t stx_attributes;
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- __uint32_t stx_nlink;
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- __uint32_t stx_uid;
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- __uint32_t stx_gid;
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- __uint16_t stx_mode;
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- __uint16_t __statx_pad1[1];
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- __uint64_t stx_ino;
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- __uint64_t stx_size;
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- __uint64_t stx_blocks;
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- __uint64_t stx_attributes_mask;
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- struct statx_timestamp stx_atime;
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- struct statx_timestamp stx_btime;
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- struct statx_timestamp stx_ctime;
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- struct statx_timestamp stx_mtime;
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- __uint32_t stx_rdev_major;
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- __uint32_t stx_rdev_minor;
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- __uint32_t stx_dev_major;
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- __uint32_t stx_dev_minor;
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- __uint64_t __statx_pad2[14];
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-};
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-
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-#define STATX_TYPE 0x0001U
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-#define STATX_MODE 0x0002U
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-#define STATX_NLINK 0x0004U
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-#define STATX_UID 0x0008U
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-#define STATX_GID 0x0010U
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-#define STATX_ATIME 0x0020U
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-#define STATX_MTIME 0x0040U
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-#define STATX_CTIME 0x0080U
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-#define STATX_INO 0x0100U
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-#define STATX_SIZE 0x0200U
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-#define STATX_BLOCKS 0x0400U
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-#define STATX_BASIC_STATS 0x07ffU
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-#define STATX_ALL 0x0fffU
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-#define STATX_BTIME 0x0800U
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-#define STATX__RESERVED 0x80000000U
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-
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-#define STATX_ATTR_COMPRESSED 0x0004
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-#define STATX_ATTR_IMMUTABLE 0x0010
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-#define STATX_ATTR_APPEND 0x0020
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-#define STATX_ATTR_NODUMP 0x0040
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-#define STATX_ATTR_ENCRYPTED 0x0800
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-#define STATX_ATTR_AUTOMOUNT 0x1000
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-
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-__BEGIN_DECLS
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-
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-/* Fill *BUF with information about PATH in DIRFD. */
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-int statx (int __dirfd, const char *__restrict __path, int __flags,
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- unsigned int __mask, struct statx *__restrict __buf)
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- __THROW __nonnull ((2, 5));
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-
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-__END_DECLS
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+/* Use the generic definitions. */
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+#include <bits/statx-generic.h>
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diff --git a/io/bits/types/struct_statx.h b/io/bits/types/struct_statx.h
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new file mode 100644
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index 0000000000000000..4f3ae3ece62a0ad2
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--- /dev/null
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+++ b/io/bits/types/struct_statx.h
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@@ -0,0 +1,55 @@
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+/* Definition of the generic version of struct statx.
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+ Copyright (C) 2018-2019 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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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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+
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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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+
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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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+ <http://www.gnu.org/licenses/>. */
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+
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+#ifndef _SYS_STAT_H
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+# error Never include <bits/types/struct_statx.h> directly, include <sys/stat.h> instead.
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+#endif
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+
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+#ifndef __statx_defined
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+#define __statx_defined 1
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+
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+/* Warning: The kernel may add additional fields to this struct in the
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+ future. Only use this struct for calling the statx function, not
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+ for storing data. (Expansion will be controlled by the mask
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+ argument of the statx function.) */
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+struct statx
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+{
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+ __uint32_t stx_mask;
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+ __uint32_t stx_blksize;
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+ __uint64_t stx_attributes;
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+ __uint32_t stx_nlink;
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+ __uint32_t stx_uid;
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+ __uint32_t stx_gid;
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+ __uint16_t stx_mode;
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+ __uint16_t __statx_pad1[1];
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+ __uint64_t stx_ino;
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+ __uint64_t stx_size;
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+ __uint64_t stx_blocks;
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+ __uint64_t stx_attributes_mask;
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+ struct statx_timestamp stx_atime;
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+ struct statx_timestamp stx_btime;
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+ struct statx_timestamp stx_ctime;
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+ struct statx_timestamp stx_mtime;
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+ __uint32_t stx_rdev_major;
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+ __uint32_t stx_rdev_minor;
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+ __uint32_t stx_dev_major;
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+ __uint32_t stx_dev_minor;
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+ __uint64_t __statx_pad2[14];
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+};
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+
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+#endif /* __statx_defined */
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diff --git a/io/bits/types/struct_statx_timestamp.h b/io/bits/types/struct_statx_timestamp.h
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new file mode 100644
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index 0000000000000000..0f104ef84ed7d356
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--- /dev/null
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+++ b/io/bits/types/struct_statx_timestamp.h
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@@ -0,0 +1,33 @@
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+/* Definition of the generic version of struct statx_timestamp.
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+ Copyright (C) 2018-2019 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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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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+
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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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+
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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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+ <http://www.gnu.org/licenses/>. */
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+
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+#ifndef _SYS_STAT_H
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+# error Never include <bits/types/struct_statx_timestamp.h> directly, include <sys/stat.h> instead.
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+#endif
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+
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+#ifndef __statx_timestamp_defined
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+#define __statx_timestamp_defined 1
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+
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+struct statx_timestamp
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+{
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+ __int64_t tv_sec;
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+ __uint32_t tv_nsec;
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+ __int32_t __statx_timestamp_pad1[1];
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+};
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+
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+#endif /* __statx_timestamp_defined */
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diff --git a/io/statx_generic.c b/io/statx_generic.c
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index df327f8c525f748c..987c84fb45f5db63 100644
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--- a/io/statx_generic.c
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+++ b/io/statx_generic.c
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@@ -18,9 +18,16 @@
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#include <errno.h>
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#include <fcntl.h>
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+#include <string.h>
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#include <sys/stat.h>
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#include <sys/sysmacros.h>
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+/* Obtain the original definition of struct statx. */
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+#undef __statx_defined
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+#define statx original_statx
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+#include <bits/types/struct_statx.h>
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+#undef statx
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+
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static inline struct statx_timestamp
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statx_convert_timestamp (struct timespec tv)
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{
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@@ -57,7 +64,7 @@ statx_generic (int fd, const char *path, int flags,
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/* The interface is defined in such a way that unused (padding)
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fields have to be cleared. STATX_BASIC_STATS corresponds to the
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data which is available via fstatat64. */
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- *buf = (struct statx)
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+ struct original_statx obuf =
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{
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.stx_mask = STATX_BASIC_STATS,
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.stx_blksize = st.st_blksize,
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@@ -76,6 +83,8 @@ statx_generic (int fd, const char *path, int flags,
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.stx_dev_major = major (st.st_dev),
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.stx_dev_minor = minor (st.st_dev),
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};
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+ _Static_assert (sizeof (*buf) >= sizeof (obuf), "struct statx size");
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+ memcpy (buf, &obuf, sizeof (obuf));
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return 0;
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}
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diff --git a/sysdeps/unix/sysv/linux/bits/statx.h b/sysdeps/unix/sysv/linux/bits/statx.h
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new file mode 100644
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index 0000000000000000..d36f44efc60a0bed
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--- /dev/null
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+++ b/sysdeps/unix/sysv/linux/bits/statx.h
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@@ -0,0 +1,34 @@
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+/* statx-related definitions and declarations. Linux version.
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+ Copyright (C) 2018-2019 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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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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+
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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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+
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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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+ <http://www.gnu.org/licenses/>. */
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+
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+/* This interface is based on <linux/stat.h> in Linux. */
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+
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+#ifndef _SYS_STAT_H
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+# error Never include <bits/statx.h> directly, include <sys/stat.h> instead.
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+#endif
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+
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+/* Use the Linux kernel header if available. */
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+#if __glibc_has_include (<linux/stat.h>)
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+# include <linux/stat.h>
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+# ifdef STATX_TYPE
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+# define __statx_timestamp_defined 1
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+# define __statx_defined 1
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+# endif
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+#endif
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+
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+#include <bits/statx-generic.h>
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