diff options
Diffstat (limited to 'libc/sysdeps/unix/sysv/linux/ftruncate64.c')
-rw-r--r-- | libc/sysdeps/unix/sysv/linux/ftruncate64.c | 52 |
1 files changed, 6 insertions, 46 deletions
diff --git a/libc/sysdeps/unix/sysv/linux/ftruncate64.c b/libc/sysdeps/unix/sysv/linux/ftruncate64.c index 719f02592..af05a4bbb 100644 --- a/libc/sysdeps/unix/sysv/linux/ftruncate64.c +++ b/libc/sysdeps/unix/sysv/linux/ftruncate64.c @@ -1,5 +1,4 @@ -/* Copyright (C) 1997,1998,1999,2000,2001,2003,2005,2006,2011 - Free Software Foundation, Inc. +/* Copyright (C) 1997-2012 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 @@ -24,53 +23,14 @@ #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 - - /* Truncate the file referenced by FD to LENGTH bytes. */ int __ftruncate64 (int fd, off64_t length) { -#ifndef __ASSUME_TRUNCATE64_SYSCALL - if (! __have_no_truncate64) -#endif - { - unsigned int low = length & 0xffffffff; - unsigned int high = length >> 32; -#ifndef __ASSUME_TRUNCATE64_SYSCALL - int saved_errno = errno; -#endif - int result = INLINE_SYSCALL (ftruncate64, 3, fd, - __LONG_LONG_PAIR (high, low)); -#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 + unsigned int low = length & 0xffffffff; + unsigned int high = length >> 32; + int result = INLINE_SYSCALL (ftruncate64, 3, fd, + __LONG_LONG_PAIR (high, low)); + return result; } weak_alias (__ftruncate64, ftruncate64) - -#else -/* Use the generic implementation. */ -# include <misc/ftruncate64.c> -#endif |