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glibc  2.9
statfsconv.c
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00001 /* Convert between `struct statfs' format, and `struct statfs64' format.
00002    Copyright (C) 2001,02 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 <sys/statfs.h>
00021 #include <errno.h>
00022 
00023 static inline int
00024 statfs64_conv (struct statfs *buf, const struct statfs64 *buf64)
00025 {
00026 # define DO(memb)                                                    \
00027   buf->memb = buf64->memb;                                           \
00028   if (sizeof buf->memb != sizeof buf64->memb && buf->memb != buf64->memb)     \
00029     {                                                                \
00030       __set_errno (EOVERFLOW);                                              \
00031       return -1;                                                     \
00032     }
00033 
00034   DO (f_type);
00035   DO (f_bsize);
00036   DO (f_blocks);
00037   DO (f_bfree);
00038   DO (f_bavail);
00039   DO (f_files);
00040   DO (f_fsid);
00041   DO (f_namelen);
00042   DO (f_favail);
00043   DO (f_frsize);
00044   DO (f_flag);
00045 
00046 # undef DO
00047 
00048   return 0;
00049 }