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glibc  2.9
sync_file_range.c
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00001 /* Selective file content synch'ing.
00002    Copyright (C) 2006, 2007 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <errno.h>
00021 #include <fcntl.h>
00022 #include <sys/types.h>
00023 
00024 #include <sysdep.h>
00025 #include <sys/syscall.h>
00026 
00027 
00028 #ifdef __NR_sync_file_range
00029 int
00030 sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags)
00031 {
00032   return INLINE_SYSCALL (sync_file_range, 7, fd, 0,
00033                       __LONG_LONG_PAIR ((long) (from >> 32), (long) from),
00034                       __LONG_LONG_PAIR ((long) (to >> 32), (long) to),
00035                       flags);
00036 }
00037 #else
00038 int
00039 sync_file_range (int fd, __off64_t from, __off64_t to, unsigned int flags)
00040 {
00041   __set_errno (ENOSYS);
00042   return -1;
00043 }
00044 stub_warning (sync_file_range)
00045 
00046 # include <stub-tag.h>
00047 #endif