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Add statx conditionals for wordsize-32 *xstat.c 

Linux kernel have remove stat64 family from default syscall set, new
implementations with statx is needed when __ARCH_WANT_STAT64 is not
define. This patch add conditionals for relevant functions, using statx
system call to get information and then copy to the return buf, ref to
include/linux/fs.h from linux kernel.

	* sysdeps/unix/sysv/linux/Makefile: Add statx_cp.c.
	* sysdeps/unix/sysv/linux/fxstat64.c: Add conditionals for kernel
	without stat64 system call support.
	* sysdeps/unix/sysv/linux/fxstatat64.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/fxstat.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/fxstatat.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat64.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/xstat.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/xstat64.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips64/statx_cp.c: New file.
	* sysdeps/unix/sysv/linux/statx_cp.c: Likewise.
	* sysdeps/unix/sysv/linux/statx_cp.h: Likewise.
	* sysdeps/unix/sysv/linux/wordsize-64/statx_cp.c: Likewise.
This commit is contained in:
Mao Han 2018-11-26 11:13:32 +08:00
parent ef202e530c
commit 6bbfc5c09f
14 changed files with 186 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
ChangeLog
View File

@ -1,3 +1,20 @@
2018-12-17 Mao Han <han_mao@c-sky.com>
* sysdeps/unix/sysv/linux/Makefile: Add statx_cp.c.
* sysdeps/unix/sysv/linux/fxstat64.c: Add conditionals for kernel
without stat64 system call support.
* sysdeps/unix/sysv/linux/fxstatat64.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/fxstat.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/fxstatat.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat64.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/xstat.c: Likewise.
* sysdeps/unix/sysv/linux/generic/wordsize-32/xstat64.c: Likewise.
* sysdeps/unix/sysv/linux/mips/mips64/statx_cp.c: New file.
* sysdeps/unix/sysv/linux/statx_cp.c: Likewise.
* sysdeps/unix/sysv/linux/statx_cp.h: Likewise.
* sysdeps/unix/sysv/linux/wordsize-64/statx_cp.c: Likewise.
2018-12-15 Paul Eggert <eggert@cs.ucla.edu>
regex: fix storage-exhaustion error

3
sysdeps/unix/sysv/linux/Makefile
View File

@ -183,7 +183,8 @@ sysdep_routines += xstatconv internal_statvfs internal_statvfs64 \
close_nocancel fcntl_nocancel nanosleep_nocancel \
open_nocancel open64_nocancel \
openat_nocancel openat64_nocancel \
pause_nocancel read_nocancel waitpid_nocancel write_nocancel
pause_nocancel read_nocancel waitpid_nocancel \
write_nocancel statx_cp
sysdep_headers += bits/fcntl-linux.h

12
sysdeps/unix/sysv/linux/fxstat64.c
View File

@ -1,4 +1,4 @@
/* fxstat64 using Linux fstat64 system call.
/* fxstat64 using Linux fstat64/statx system call.
Copyright (C) 1997-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
@ -18,6 +18,7 @@
#include <errno.h>
#include <stddef.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <kernel_stat.h>
@ -25,6 +26,7 @@
#include <sys/syscall.h>
#include <kernel-features.h>
#include <statx_cp.h>
/* Get information about the file FD in BUF. */
@ -32,7 +34,15 @@ int
___fxstat64 (int vers, int fd, struct stat64 *buf)
{
int result;
#ifdef __NR_fstat64
result = INLINE_SYSCALL (fstat64, 2, fd, buf);
#else
struct statx tmp;
result = INLINE_SYSCALL (statx, 5, fd, "", AT_EMPTY_PATH, STATX_BASIC_STATS,
&tmp);
if (result == 0)
__cp_stat64_statx (buf, &tmp);
#endif
#if defined _HAVE_STAT64___ST_INO && !__ASSUME_ST_INO_64_BIT
if (__builtin_expect (!result, 1) && buf->__st_ino != (__ino_t) buf->st_ino)
buf->st_ino = buf->__st_ino;

11
sysdeps/unix/sysv/linux/fxstatat64.c
View File

@ -26,6 +26,8 @@
#include <sysdep.h>
#include <sys/syscall.h>
#include <statx_cp.h>
/* Get information about the file NAME in BUF. */
int
@ -37,7 +39,16 @@ __fxstatat64 (int vers, int fd, const char *file, struct stat64 *st, int flag)
int result;
INTERNAL_SYSCALL_DECL (err);
#ifdef __NR_fstatat64
result = INTERNAL_SYSCALL (fstatat64, err, 4, fd, file, st, flag);
#else
struct statx tmp;
result = INTERNAL_SYSCALL (statx, err, 5, fd, file, AT_NO_AUTOMOUNT | flag,
STATX_BASIC_STATS, &tmp);
if (result == 0)
__cp_stat64_statx (st, &tmp);
#endif
if (!__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 1))
return 0;
else

10
sysdeps/unix/sysv/linux/generic/wordsize-32/fxstat.c
View File

@ -18,6 +18,7 @@
#include <errno.h>
#include <stddef.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <kernel_stat.h>
@ -27,6 +28,7 @@
#if !XSTAT_IS_XSTAT64
#include "overflow.h"
#include <statx_cp.h>
/* Get information about the file FD in BUF. */
int
@ -34,7 +36,15 @@ __fxstat (int vers, int fd, struct stat *buf)
{
if (vers == _STAT_VER_KERNEL)
{
# ifdef __NR_fstat64
int rc = INLINE_SYSCALL (fstat64, 2, fd, buf);
# else
struct statx tmp;
int rc = INLINE_SYSCALL (statx, 5, fd, "", AT_EMPTY_PATH,
STATX_BASIC_STATS, &tmp);
if (rc == 0)
__cp_stat64_statx ((struct stat64 *)buf, &tmp);
# endif
return rc ?: stat_overflow (buf);
}

10
sysdeps/unix/sysv/linux/generic/wordsize-32/fxstatat.c
View File

@ -28,6 +28,7 @@
#if !XSTAT_IS_XSTAT64
#include "overflow.h"
#include <statx_cp.h>
/* Get information about the file NAME in BUF. */
int
@ -35,7 +36,16 @@ __fxstatat (int vers, int fd, const char *file, struct stat *buf, int flag)
{
if (vers == _STAT_VER_KERNEL)
{
# ifdef __NR_fstatat64
int rc = INLINE_SYSCALL (fstatat64, 4, fd, file, buf, flag);
# else
struct statx tmp;
int rc = INLINE_SYSCALL (statx, 5, fd, file,
AT_NO_AUTOMOUNT | flag,
STATX_BASIC_STATS, &tmp);
if (rc == 0)
__cp_stat64_statx ((struct stat64 *)buf, &tmp);
# endif
return rc ?: stat_overflow (buf);
}

10
sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat.c
View File

@ -27,6 +27,7 @@
#if !XSTAT_IS_XSTAT64
#include "overflow.h"
#include <statx_cp.h>
/* Get information about the file NAME in BUF. */
int
@ -34,8 +35,17 @@ __lxstat (int vers, const char *name, struct stat *buf)
{
if (vers == _STAT_VER_KERNEL)
{
#ifdef __NR_fstatat64
int rc = INLINE_SYSCALL (fstatat64, 4, AT_FDCWD, name, buf,
AT_SYMLINK_NOFOLLOW);
#else
struct statx tmp;
int rc = INLINE_SYSCALL (statx, 5, AT_FDCWD, name,
AT_NO_AUTOMOUNT | AT_SYMLINK_NOFOLLOW,
STATX_BASIC_STATS, &tmp);
if (rc == 0)
__cp_stat64_statx ((struct stat64 *)buf, &tmp);
#endif
return rc ?: stat_overflow (buf);
}
errno = EINVAL;

19
sysdeps/unix/sysv/linux/generic/wordsize-32/lxstat64.c
View File

@ -32,13 +32,28 @@
#include <sysdep.h>
#include <sys/syscall.h>
#include <statx_cp.h>
/* Get information about the file NAME in BUF. */
int
__lxstat64 (int vers, const char *name, struct stat64 *buf)
{
if (vers == _STAT_VER_KERNEL)
return INLINE_SYSCALL (fstatat64, 4, AT_FDCWD, name, buf,
AT_SYMLINK_NOFOLLOW);
{
#ifdef __NR_fstatat64
return INLINE_SYSCALL (fstatat64, 4, AT_FDCWD, name, buf,
AT_SYMLINK_NOFOLLOW);
#else
struct statx tmp;
int rc = INLINE_SYSCALL (statx, 5, AT_FDCWD, name,
AT_NO_AUTOMOUNT | AT_SYMLINK_NOFOLLOW,
STATX_BASIC_STATS, &tmp);
if (rc == 0)
__cp_stat64_statx (buf, &tmp);
return rc;
#endif
}
errno = EINVAL;
return -1;
}

9
sysdeps/unix/sysv/linux/generic/wordsize-32/xstat.c
View File

@ -27,6 +27,7 @@
#if !XSTAT_IS_XSTAT64
#include "overflow.h"
#include <statx_cp.h>
/* Get information about the file NAME in BUF. */
int
@ -34,7 +35,15 @@ __xstat (int vers, const char *name, struct stat *buf)
{
if (vers == _STAT_VER_KERNEL)
{
# ifdef __NR_fstatat64
int rc = INLINE_SYSCALL (fstatat64, 4, AT_FDCWD, name, buf, 0);
# else
struct statx tmp;
int rc = INLINE_SYSCALL (statx, 5, AT_FDCWD, name, AT_NO_AUTOMOUNT,
STATX_BASIC_STATS, &tmp);
if (rc == 0)
__cp_stat64_statx ((struct stat64 *)buf, &tmp);
# endif
return rc ?: stat_overflow (buf);
}

16
sysdeps/unix/sysv/linux/generic/wordsize-32/xstat64.c
View File

@ -32,13 +32,25 @@
#include <sysdep.h>
#include <sys/syscall.h>
#include <statx_cp.h>
/* Get information about the file NAME in BUF. */
int
__xstat64 (int vers, const char *name, struct stat64 *buf)
{
if (vers == _STAT_VER_KERNEL)
return INLINE_SYSCALL (fstatat64, 4, AT_FDCWD, name, buf, 0);
{
#ifdef __NR_fstatat64
return INLINE_SYSCALL (fstatat64, 4, AT_FDCWD, name, buf, 0);
#else
struct statx tmp;
int rc = INLINE_SYSCALL (statx, 5, AT_FDCWD, name, AT_NO_AUTOMOUNT,
STATX_BASIC_STATS, &tmp);
if (rc == 0)
__cp_stat64_statx (buf, &tmp);
return rc;
#endif
}
errno = EINVAL;
return -1;
}

3
sysdeps/unix/sysv/linux/mips/mips64/statx_cp.c Normal file
View File

@ -0,0 +1,3 @@
/* Override the generic statx_cp.c which is only needed for new 32-bit arch
without stat64 family support.
*/

49
sysdeps/unix/sysv/linux/statx_cp.c Normal file
View File

@ -0,0 +1,49 @@
/* Struct statx to stat/stat64 conversion for Linux.
Copyright (C) 2018 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/>. */
#include <stddef.h>
#include <string.h>
#include <sys/stat.h>
#include <statx_cp.h>
#if !defined(__NR_fstat64) || !defined(__NR_fstatat64)
void
__cp_stat64_statx (struct stat64 *to, struct statx *from)
{
memset (to, 0, sizeof (struct stat64));
to->st_dev = ((from->stx_dev_minor & 0xff) | (from->stx_dev_major << 8)
| ((from->stx_dev_minor & ~0xff) << 12));
to->st_rdev = ((from->stx_rdev_minor & 0xff) | (from->stx_rdev_major << 8)
| ((from->stx_rdev_minor & ~0xff) << 12));
to->st_ino = from->stx_ino;
to->st_mode = from->stx_mode;
to->st_nlink = from->stx_nlink;
to->st_uid = from->stx_uid;
to->st_gid = from->stx_gid;
to->st_atime = from->stx_atime.tv_sec;
to->st_atim.tv_nsec = from->stx_atime.tv_nsec;
to->st_mtime = from->stx_mtime.tv_sec;
to->st_mtim.tv_nsec = from->stx_mtime.tv_nsec;
to->st_ctime = from->stx_ctime.tv_sec;
to->st_ctim.tv_nsec = from->stx_ctime.tv_nsec;
to->st_size = from->stx_size;
to->st_blocks = from->stx_blocks;
to->st_blksize = from->stx_blksize;
}
#endif

20
sysdeps/unix/sysv/linux/statx_cp.h Normal file
View File

@ -0,0 +1,20 @@
/* Struct statx to stat/stat64 conversion for Linux.
Copyright (C) 2018 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/>. */
extern void __cp_stat64_statx (struct stat64 *to, struct statx *from)
attribute_hidden;

3
sysdeps/unix/sysv/linux/wordsize-64/statx_cp.c Normal file
View File

@ -0,0 +1,3 @@
/* Override the generic statx_cp.c which is only needed for new 32-bit arch
without stat64 family support.
*/