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* sysdeps/unix/sysv/linux/mips/xstatconv.c: Remove STAT_IS_KERNEL_STAT

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code.
	(__xstat_conv): Use memset to clear padding arrays.  Check for
	overflow.
	(__xstat64_conv): Use memset to clear padding arrays.
	(__xstat32_conv): New function.
	* sysdeps/unix/sysv/linux/mips/mips32/fxstatat.c: New file.
	* sysdeps/unix/sysv/linux/mips/mips64/fxstatat64.c: Likewise.
This commit is contained in:
Daniel Jacobowitz 2006-09-22 17:36:23 +00:00
parent 6b4d184dc9
commit 6ea630251e
4 changed files with 214 additions and 26 deletions
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11
ChangeLog.mips
View File

@ -1,3 +1,14 @@
2006-09-22 Richard Sandiford <richard@codesourcery.com>
* sysdeps/unix/sysv/linux/mips/xstatconv.c: Remove STAT_IS_KERNEL_STAT
code.
(__xstat_conv): Use memset to clear padding arrays. Check for
overflow.
(__xstat64_conv): Use memset to clear padding arrays.
(__xstat32_conv): New function.
* sysdeps/unix/sysv/linux/mips/mips32/fxstatat.c: New file.
* sysdeps/unix/sysv/linux/mips/mips64/fxstatat64.c: Likewise.
2006-09-21 Joseph Myers <joseph@codesourcery.com>
* sysdeps/mips/fpu_control.h: If soft-float, don't use

1
sysdeps/unix/sysv/linux/mips/mips32/fxstatat.c Normal file
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@ -0,0 +1 @@
#include <sysdeps/unix/sysv/linux/i386/fxstatat.c>

113
sysdeps/unix/sysv/linux/mips/mips64/fxstatat64.c Normal file
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@ -0,0 +1,113 @@
/* Copyright (C) 2005,2006 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <fcntl.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <kernel_stat.h>
#include <sysdep.h>
#include <sys/syscall.h>
#include <bp-checks.h>
#include <kernel-features.h>
#include <xstatconv.h>
/* Get information about the file NAME in BUF. */
int
__fxstatat64 (int vers, int fd, const char *file, struct stat64 *st, int flag)
{
if (__builtin_expect (vers != _STAT_VER_LINUX, 0))
{
__set_errno (EINVAL);
return -1;
}
int result;
INTERNAL_SYSCALL_DECL (err);
struct kernel_stat kst;
#ifdef __NR_newfstatat
# ifndef __ASSUME_ATFCTS
if (__have_atfcts >= 0)
# endif
{
result = INTERNAL_SYSCALL (newfstatat, err, 4, fd, file, &kst, flag);
# ifndef __ASSUME_ATFCTS
if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 1)
&& INTERNAL_SYSCALL_ERRNO (result, err) == ENOSYS)
__have_atfcts = -1;
else
# endif
if (!__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 1))
return __xstat64_conv (vers, &kst, st);
else
{
__set_errno (INTERNAL_SYSCALL_ERRNO (result, err));
return -1;
}
}
#endif
#ifndef __ASSUME_ATFCTS
if (flag & ~AT_SYMLINK_NOFOLLOW)
{
__set_errno (EINVAL);
return -1;
}
char *buf = NULL;
if (fd != AT_FDCWD && file[0] != '/')
{
size_t filelen = strlen (file);
static const char procfd[] = "/proc/self/fd/%d/%s";
/* Buffer for the path name we are going to use. It consists of
- the string /proc/self/fd/
- the file descriptor number
- the file name provided.
The final NUL is included in the sizeof. A bit of overhead
due to the format elements compensates for possible negative
numbers. */
size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen;
buf = alloca (buflen);
__snprintf (buf, buflen, procfd, fd, file);
file = buf;
}
if (flag & AT_SYMLINK_NOFOLLOW)
result = INTERNAL_SYSCALL (lstat, err, 2, CHECK_STRING (file),
__ptrvalue (&kst));
else
result = INTERNAL_SYSCALL (stat, err, 2, CHECK_STRING (file),
__ptrvalue (&kst));
if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1))
return __xstat64_conv (vers, &kst, st);
__atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf);
return -1;
#endif
}
libc_hidden_def (__fxstatat64)

115
sysdeps/unix/sysv/linux/mips/xstatconv.c
View File

@ -21,16 +21,8 @@
#include <sys/stat.h>
#include <kernel_stat.h>
#ifdef STAT_IS_KERNEL_STAT
/* Dummy. */
struct kernel_stat;
#else
#include <string.h>
int
__xstat_conv (int vers, struct kernel_stat *kbuf, void *ubuf)
{
@ -49,30 +41,43 @@ __xstat_conv (int vers, struct kernel_stat *kbuf, void *ubuf)
/* Convert to current kernel version of `struct stat'. */
buf->st_dev = kbuf->st_dev;
buf->st_pad1[0] = 0; buf->st_pad1[1] = 0; buf->st_pad1[2] = 0;
memset (&buf->st_pad1, 0, sizeof (buf->st_pad1));
buf->st_ino = kbuf->st_ino;
/* Check for overflow. */
if (buf->st_ino != kbuf->st_ino)
{
__set_errno (EOVERFLOW);
return -1;
}
buf->st_mode = kbuf->st_mode;
buf->st_nlink = kbuf->st_nlink;
buf->st_uid = kbuf->st_uid;
buf->st_gid = kbuf->st_gid;
buf->st_rdev = kbuf->st_rdev;
buf->st_pad2[0] = 0; buf->st_pad2[1] = 0;
buf->st_pad3 = 0;
memset (&buf->st_pad2, 0, sizeof (buf->st_pad2));
buf->st_size = kbuf->st_size;
buf->st_blksize = kbuf->st_blksize;
buf->st_blocks = kbuf->st_blocks;
/* Check for overflow. */
if (buf->st_size != kbuf->st_size)
{
__set_errno (EOVERFLOW);
return -1;
}
buf->st_pad3 = 0;
buf->st_atim.tv_sec = kbuf->st_atime_sec;
buf->st_atim.tv_nsec = kbuf->st_atime_nsec;
buf->st_mtim.tv_sec = kbuf->st_mtime_sec;
buf->st_mtim.tv_nsec = kbuf->st_mtime_nsec;
buf->st_ctim.tv_sec = kbuf->st_ctime_sec;
buf->st_ctim.tv_nsec = kbuf->st_ctime_nsec;
buf->st_pad5[0] = 0; buf->st_pad5[1] = 0;
buf->st_pad5[2] = 0; buf->st_pad5[3] = 0;
buf->st_pad5[4] = 0; buf->st_pad5[5] = 0;
buf->st_pad5[6] = 0; buf->st_pad5[7] = 0;
buf->st_blksize = kbuf->st_blksize;
buf->st_blocks = kbuf->st_blocks;
/* Check for overflow. */
if (buf->st_blocks != kbuf->st_blocks)
{
__set_errno (EOVERFLOW);
return -1;
}
memset (&buf->st_pad5, 0, sizeof (buf->st_pad5));
}
break;
@ -97,14 +102,14 @@ __xstat64_conv (int vers, struct kernel_stat *kbuf, void *ubuf)
struct stat64 *buf = ubuf;
buf->st_dev = kbuf->st_dev;
buf->st_pad1[0] = 0; buf->st_pad1[1] = 0; buf->st_pad1[2] = 0;
memset (&buf->st_pad1, 0, sizeof (buf->st_pad1));
buf->st_ino = kbuf->st_ino;
buf->st_mode = kbuf->st_mode;
buf->st_nlink = kbuf->st_nlink;
buf->st_uid = kbuf->st_uid;
buf->st_gid = kbuf->st_gid;
buf->st_rdev = kbuf->st_rdev;
buf->st_pad2[0] = 0; buf->st_pad2[1] = 0; buf->st_pad2[2] = 0;
memset (&buf->st_pad2, 0, sizeof (buf->st_pad2));
buf->st_pad3 = 0;
buf->st_size = kbuf->st_size;
buf->st_blksize = kbuf->st_blksize;
@ -117,10 +122,7 @@ __xstat64_conv (int vers, struct kernel_stat *kbuf, void *ubuf)
buf->st_ctim.tv_sec = kbuf->st_ctime_sec;
buf->st_ctim.tv_nsec = kbuf->st_ctime_nsec;
buf->st_pad4[0] = 0; buf->st_pad4[1] = 0;
buf->st_pad4[2] = 0; buf->st_pad4[3] = 0;
buf->st_pad4[4] = 0; buf->st_pad4[5] = 0;
buf->st_pad4[6] = 0; buf->st_pad4[7] = 0;
memset (&buf->st_pad4, 0, sizeof (buf->st_pad4));
}
break;
@ -136,4 +138,65 @@ __xstat64_conv (int vers, struct kernel_stat *kbuf, void *ubuf)
#endif
}
#endif /* ! STAT_IS_KERNEL_STAT */
#if _MIPS_SIM == _ABIO32
int
__xstat32_conv (int vers, struct stat64 *kbuf, struct stat *buf)
{
switch (vers)
{
case _STAT_VER_LINUX:
/* Convert current kernel version of `struct stat64' to
`struct stat'. The layout of the fields in the kernel's
stat64 is the same as that in the user stat64; the only
difference is that the latter has more trailing padding. */
buf->st_dev = kbuf->st_dev;
memset (&buf->st_pad1, 0, sizeof (buf->st_pad1));
buf->st_ino = kbuf->st_ino;
/* Check for overflow. */
if (buf->st_ino != kbuf->st_ino)
{
__set_errno (EOVERFLOW);
return -1;
}
buf->st_mode = kbuf->st_mode;
buf->st_nlink = kbuf->st_nlink;
buf->st_uid = kbuf->st_uid;
buf->st_gid = kbuf->st_gid;
buf->st_rdev = kbuf->st_rdev;
memset (&buf->st_pad2, 0, sizeof (buf->st_pad2));
buf->st_size = kbuf->st_size;
/* Check for overflow. */
if (buf->st_size != kbuf->st_size)
{
__set_errno (EOVERFLOW);
return -1;
}
buf->st_pad3 = 0;
buf->st_atim.tv_sec = kbuf->st_atim.tv_sec;
buf->st_atim.tv_nsec = kbuf->st_atim.tv_nsec;
buf->st_mtim.tv_sec = kbuf->st_mtim.tv_sec;
buf->st_mtim.tv_nsec = kbuf->st_mtim.tv_nsec;
buf->st_ctim.tv_sec = kbuf->st_ctim.tv_sec;
buf->st_ctim.tv_nsec = kbuf->st_ctim.tv_nsec;
buf->st_blksize = kbuf->st_blksize;
buf->st_blocks = kbuf->st_blocks;
/* Check for overflow. */
if (buf->st_blocks != kbuf->st_blocks)
{
__set_errno (EOVERFLOW);
return -1;
}
memset (&buf->st_pad5, 0, sizeof (buf->st_pad5));
break;
/* If struct stat64 is different from struct stat then
_STAT_VER_KERNEL does not make sense. */
case _STAT_VER_KERNEL:
default:
__set_errno (EINVAL);
return -1;
}
return 0;
}
#endif /* _MIPS_SIM == _ABIO32 */