[4/4,AARCH64] ILP32: stat syscalls
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Message ID 1473854559-11103-5-git-send-email-ynorov@caviumnetworks.com
State New
Headers show

Commit Message

Yury Norov Sept. 14, 2016, 12:02 p.m. UTC
Implementation details:
 - struct stat, stat64, layouts are taken from
   sysdeps/unix/sysv/linux/aarch64/bits. struct stat has broken st_ino field
   (legacy from arm32), so it's handled in corresponding header in a way to
   make this structure identical to struct stat64.
 - XSTAT_IS_XSTAT64 is defined to use the same implementations for stat
   syscalls.
 - STAT_IS_KERNEL_STAT is defined, and _STAT_VER is defined to
   _STAT_VER_KERNEL for ilp32 to bypass __xstat_conv().

2016-09-09: Yury Norov  <ynorov@caviumnetworks.com>

	* sysdeps/unix/sysv/linux/aarch64/bits/stat.h: New file
	* sysdeps/unix/sysv/linux/aarch64/ilp32/kernel_stat.h: Likewise

Signed-off-by: Yury Norov <ynorov@caviumnetworks.com>
---
 sysdeps/unix/sysv/linux/aarch64/bits/stat.h        | 166 +++++++++++++++++++++
 .../unix/sysv/linux/aarch64/ilp32/kernel_stat.h    |   2 +
 2 files changed, 168 insertions(+)
 create mode 100644 sysdeps/unix/sysv/linux/aarch64/bits/stat.h
 create mode 100644 sysdeps/unix/sysv/linux/aarch64/ilp32/kernel_stat.h

Patch
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diff --git a/sysdeps/unix/sysv/linux/aarch64/bits/stat.h b/sysdeps/unix/sysv/linux/aarch64/bits/stat.h
new file mode 100644
index 0000000..adf8f4e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/bits/stat.h
@@ -0,0 +1,166 @@ 
+/* Structs stat and stat64
+   Copyright (C) 1992-2016 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#if !defined _SYS_STAT_H && !defined _FCNTL_H
+# error "Never include <bits/stat.h> directly; use <sys/stat.h> instead."
+#endif
+
+#ifndef _BITS_STAT_H
+#define _BITS_STAT_H	1
+
+/* Versions of the `struct stat' data structure.  */
+#define _STAT_VER_LINUX_OLD	1
+#define _STAT_VER_KERNEL	1
+#define _STAT_VER_SVR4		2
+#define _STAT_VER_LINUX		3
+# ifdef __ILP32__
+#  define _STAT_VER		_STAT_VER_KERNEL
+# else
+#  define _STAT_VER		_STAT_VER_LINUX	/* The one defined below.  */
+# endif
+
+/* Versions of the `xmknod' interface.  */
+#define _MKNOD_VER_LINUX	1
+#define _MKNOD_VER_SVR4		2
+#define _MKNOD_VER		_MKNOD_VER_LINUX /* The bits defined below.  */
+
+
+struct stat
+  {
+    __dev_t st_dev;			/* Device.  */
+#ifdef __LP64__
+    __ino_t st_ino;			/* File serial number.	*/
+#else
+    unsigned short int __pad1;
+    unsigned int __st_ino;		/* 32bit file serial number.	*/
+#endif
+    __mode_t st_mode;			/* File mode.  */
+    __nlink_t st_nlink;			/* Link count.  */
+    __uid_t st_uid;			/* User ID of the file's owner.	*/
+    __gid_t st_gid;			/* Group ID of the file's group.*/
+    __dev_t st_rdev;			/* Device number, if device.  */
+    unsigned short int __pad2;
+    __off_t st_size;			/* Size of file, in bytes.  */
+    __blksize_t st_blksize;		/* Optimal block size for I/O.  */
+
+    __blkcnt_t st_blocks;		/* Number 512-byte blocks allocated. */
+#ifdef __USE_XOPEN2K8
+    /* Nanosecond resolution timestamps are stored in a format
+       equivalent to 'struct timespec'.  This is the type used
+       whenever possible but the Unix namespace rules do not allow the
+       identifier 'timespec' to appear in the <sys/stat.h> header.
+       Therefore we have to handle the use of this header in strictly
+       standard-compliant sources special.  */
+    struct timespec st_atim;		/* Time of last access.  */
+    struct timespec st_mtim;		/* Time of last modification.  */
+    struct timespec st_ctim;		/* Time of last status change.  */
+# define st_atime st_atim.tv_sec	/* Backward compatibility.  */
+# define st_mtime st_mtim.tv_sec
+# define st_ctime st_ctim.tv_sec
+#else
+    __time_t st_atime;			/* Time of last access.  */
+    unsigned long int st_atimensec;	/* Nscecs of last access.  */
+    __time_t st_mtime;			/* Time of last modification.  */
+    unsigned long int st_mtimensec;	/* Nsecs of last modification.  */
+    __time_t st_ctime;			/* Time of last status change.  */
+    unsigned long int st_ctimensec;	/* Nsecs of last status change.  */
+#endif
+#ifdef __LP64__
+    int __glibc_reserved[2];
+#else
+    __ino64_t st_ino;			/* File serial number.	*/
+#endif
+  };
+
+struct stat64
+  {
+    __dev_t st_dev;			/* Device.  */
+    unsigned int __pad1;
+
+    unsigned int __st_ino;		/* 32bit file serial number.	*/
+    __mode_t st_mode;			/* File mode.  */
+    __nlink_t st_nlink;			/* Link count.  */
+    __uid_t st_uid;			/* User ID of the file's owner.	*/
+    __gid_t st_gid;			/* Group ID of the file's group.*/
+    __dev_t st_rdev;			/* Device number, if device.  */
+    unsigned int __pad2;
+    __off64_t st_size;			/* Size of file, in bytes.  */
+    __blksize_t st_blksize;		/* Optimal block size for I/O.  */
+
+    __blkcnt64_t st_blocks;		/* Number 512-byte blocks allocated. */
+# ifdef __USE_XOPEN2K8
+    /* Nanosecond resolution timestamps are stored in a format
+       equivalent to 'struct timespec'.  This is the type used
+       whenever possible but the Unix namespace rules do not allow the
+       identifier 'timespec' to appear in the <sys/stat.h> header.
+       Therefore we have to handle the use of this header in strictly
+       standard-compliant sources special.  */
+    struct timespec st_atim;		/* Time of last access.  */
+    struct timespec st_mtim;		/* Time of last modification.  */
+    struct timespec st_ctim;		/* Time of last status change.  */
+# else
+    __time_t st_atime;			/* Time of last access.  */
+    unsigned long int st_atimensec;	/* Nscecs of last access.  */
+    __time_t st_mtime;			/* Time of last modification.  */
+    unsigned long int st_mtimensec;	/* Nsecs of last modification.  */
+    __time_t st_ctime;			/* Time of last status change.  */
+    unsigned long int st_ctimensec;	/* Nsecs of last status change.  */
+# endif
+    __ino64_t st_ino;			/* File serial number.		*/
+  };
+
+/* Tell code we have these members.  */
+#define	_STATBUF_ST_BLKSIZE
+#define _STATBUF_ST_RDEV
+/* Nanosecond resolution time values are supported.  */
+#define _STATBUF_ST_NSEC
+
+/* Encoding of the file mode.  */
+
+#define	__S_IFMT	0170000	/* These bits determine file type.  */
+
+/* File types.  */
+#define	__S_IFDIR	0040000	/* Directory.  */
+#define	__S_IFCHR	0020000	/* Character device.  */
+#define	__S_IFBLK	0060000	/* Block device.  */
+#define	__S_IFREG	0100000	/* Regular file.  */
+#define	__S_IFIFO	0010000	/* FIFO.  */
+#define	__S_IFLNK	0120000	/* Symbolic link.  */
+#define	__S_IFSOCK	0140000	/* Socket.  */
+
+/* POSIX.1b objects.  Note that these macros always evaluate to zero.  But
+   they do it by enforcing the correct use of the macros.  */
+#define __S_TYPEISMQ(buf)  ((buf)->st_mode - (buf)->st_mode)
+#define __S_TYPEISSEM(buf) ((buf)->st_mode - (buf)->st_mode)
+#define __S_TYPEISSHM(buf) ((buf)->st_mode - (buf)->st_mode)
+
+/* Protection bits.  */
+
+#define	__S_ISUID	04000	/* Set user ID on execution.  */
+#define	__S_ISGID	02000	/* Set group ID on execution.  */
+#define	__S_ISVTX	01000	/* Save swapped text after use (sticky).  */
+#define	__S_IREAD	0400	/* Read by owner.  */
+#define	__S_IWRITE	0200	/* Write by owner.  */
+#define	__S_IEXEC	0100	/* Execute by owner.  */
+
+#ifdef __USE_ATFILE
+# define UTIME_NOW	((1l << 30) - 1l)
+# define UTIME_OMIT	((1l << 30) - 2l)
+#endif
+
+#endif	/* bits/stat.h */
diff --git a/sysdeps/unix/sysv/linux/aarch64/ilp32/kernel_stat.h b/sysdeps/unix/sysv/linux/aarch64/ilp32/kernel_stat.h
new file mode 100644
index 0000000..4efd399
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/aarch64/ilp32/kernel_stat.h
@@ -0,0 +1,2 @@ 
+#define XSTAT_IS_XSTAT64	1
+#define STAT_IS_KERNEL_STAT