glibc/sysdeps/unix/sysv/linux/powerpc/ftruncate64.c
Ulrich Drepper 2958e6cc5f Update.
* io/ftw.c: Always use readdir64.
	* io/ftw64.c: Likewise.
	* sysdeps/unix/sysv/linux/ttyname.c: Likewise.
	* sysdeps/unix/sysv/linux/ttyname_r.c: Likewise.
	* sysdeps/generic/glob.c: Likewise.  Convert results if gl_readdir
	callback to dirent.  Still allow compiling outside glibc.
	* sysdeps/gnu/glob64.c: Define COMPILE_GLOB64.
	* sysdeps/unix/sysv/linux/i386/glob64.c: Likewise.

	* malloc/mtrace.c: Use fopen64.
	* posix/spawni.c: Use __open64.
	* sysdeps/unix/opendir.c: Likewise.
	* sysdeps/unix/sysv/linux/gethostid.c: Likewise.

	* sysdeps/generic/ftruncate64.c: Define __ftruncate64 and make old
	name a weak alias.
	* sysdeps/unix/sysv/aix/ftruncate64.c: Likewise.
	* sysdeps/unix/sysv/linux/ftruncate64.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/ftruncate64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/ftruncate64.c: Likewise.

	* resolv/res_data.c: Add cast to avoid warning.

	* include/unistd.h: Declare __ftruncate64.

	* sysdeps/generic/utmp_file.c: Use LFS functions and type.
2001-02-13 22:17:17 +00:00

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2.1 KiB
C

/* Copyright (C) 1997, 1998, 1999, 2000, 2001 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <sys/types.h>
#include <errno.h>
#include <unistd.h>
#include <sysdep.h>
#include <sys/syscall.h>
#include "kernel-features.h"
#ifdef __NR_ftruncate64
#ifndef __ASSUME_TRUNCATE64_SYSCALL
/* The variable is shared between all wrappers around *truncate64 calls. */
extern int have_no_truncate64;
#endif
extern int __syscall_ftruncate64 (int fd, off64_t length);
/* Truncate the file FD refers to to LENGTH bytes. */
int
__ftruncate64 (fd, length)
int fd;
off64_t length;
{
#ifndef __ASSUME_TRUNCATE64_SYSCALL
if (! have_no_truncate64)
#endif
{
#ifndef __ASSUME_TRUNCATE64_SYSCALL
int saved_errno = errno;
#endif
int result = __syscall_ftruncate64 (fd, length);
#ifndef __ASSUME_TRUNCATE64_SYSCALL
if (result != -1 || errno != ENOSYS)
#endif
return result;
#ifndef __ASSUME_TRUNCATE64_SYSCALL
__set_errno (saved_errno);
have_no_truncate64 = 1;
#endif
}
#ifndef __ASSUME_TRUNCATE64_SYSCALL
if ((off_t) length != length)
{
__set_errno (EINVAL);
return -1;
}
return __ftruncate (fd, (off_t) length);
#endif
}
weak_alias (__ftruncate64, ftruncate64)
#else
/* Use the generic implementation. */
# include <sysdeps/generic/ftruncate64.c>
#endif