linux_statfs.h revision 1.1.10.2
1 1.1.10.2 mjf /* $NetBSD: linux_statfs.h,v 1.1.10.2 2007/07/11 20:04:20 mjf Exp $ */ 2 1.1.10.2 mjf 3 1.1.10.2 mjf /*- 4 1.1.10.2 mjf * Copyright (c) 1995, 1998, 1999 The NetBSD Foundation, Inc. 5 1.1.10.2 mjf * All rights reserved. 6 1.1.10.2 mjf * 7 1.1.10.2 mjf * This code is derived from software contributed to The NetBSD Foundation 8 1.1.10.2 mjf * by Frank van der Linden and Eric Haszlakiewicz; by Jason R. Thorpe 9 1.1.10.2 mjf * of the Numerical Aerospace Simulation Facility, NASA Ames Research Center. 10 1.1.10.2 mjf * 11 1.1.10.2 mjf * Redistribution and use in source and binary forms, with or without 12 1.1.10.2 mjf * modification, are permitted provided that the following conditions 13 1.1.10.2 mjf * are met: 14 1.1.10.2 mjf * 1. Redistributions of source code must retain the above copyright 15 1.1.10.2 mjf * notice, this list of conditions and the following disclaimer. 16 1.1.10.2 mjf * 2. Redistributions in binary form must reproduce the above copyright 17 1.1.10.2 mjf * notice, this list of conditions and the following disclaimer in the 18 1.1.10.2 mjf * documentation and/or other materials provided with the distribution. 19 1.1.10.2 mjf * 3. All advertising materials mentioning features or use of this software 20 1.1.10.2 mjf * must display the following acknowledgement: 21 1.1.10.2 mjf * This product includes software developed by the NetBSD 22 1.1.10.2 mjf * Foundation, Inc. and its contributors. 23 1.1.10.2 mjf * 4. Neither the name of The NetBSD Foundation nor the names of its 24 1.1.10.2 mjf * contributors may be used to endorse or promote products derived 25 1.1.10.2 mjf * from this software without specific prior written permission. 26 1.1.10.2 mjf * 27 1.1.10.2 mjf * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 1.1.10.2 mjf * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 1.1.10.2 mjf * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 1.1.10.2 mjf * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 1.1.10.2 mjf * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 1.1.10.2 mjf * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 1.1.10.2 mjf * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 1.1.10.2 mjf * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 1.1.10.2 mjf * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 1.1.10.2 mjf * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 1.1.10.2 mjf * POSSIBILITY OF SUCH DAMAGE. 38 1.1.10.2 mjf */ 39 1.1.10.2 mjf 40 1.1.10.2 mjf #ifndef _LINUX_STATFS_H 41 1.1.10.2 mjf #define _LINUX_STATFS_H 42 1.1.10.2 mjf 43 1.1.10.2 mjf static void bsd_to_linux_statfs __P((const struct statvfs *, 44 1.1.10.2 mjf struct linux_statfs *)); 45 1.1.10.2 mjf 46 1.1.10.2 mjf /* 47 1.1.10.2 mjf * Convert NetBSD statvfs structure to Linux statfs structure. 48 1.1.10.2 mjf * Linux doesn't have f_flag, and we can't set f_frsize due 49 1.1.10.2 mjf * to glibc statvfs() bug (see below). 50 1.1.10.2 mjf */ 51 1.1.10.2 mjf static void 52 1.1.10.2 mjf bsd_to_linux_statfs(bsp, lsp) 53 1.1.10.2 mjf const struct statvfs *bsp; 54 1.1.10.2 mjf struct linux_statfs *lsp; 55 1.1.10.2 mjf { 56 1.1.10.2 mjf int i; 57 1.1.10.2 mjf 58 1.1.10.2 mjf for (i = 0; i < linux_fstypes_cnt; i++) { 59 1.1.10.2 mjf if (strcmp(bsp->f_fstypename, linux_fstypes[i].bsd) == 0) { 60 1.1.10.2 mjf lsp->l_ftype = linux_fstypes[i].linux; 61 1.1.10.2 mjf break; 62 1.1.10.2 mjf } 63 1.1.10.2 mjf } 64 1.1.10.2 mjf 65 1.1.10.2 mjf if (i == linux_fstypes_cnt) { 66 1.1.10.2 mjf lsp->l_ftype = LINUX_DEFAULT_SUPER_MAGIC; 67 1.1.10.2 mjf } 68 1.1.10.2 mjf 69 1.1.10.2 mjf /* 70 1.1.10.2 mjf * The sizes are expressed in number of blocks. The block 71 1.1.10.2 mjf * size used for the size is f_frsize for POSIX-compliant 72 1.1.10.2 mjf * statvfs. Linux statfs uses f_bsize as the block size 73 1.1.10.2 mjf * (f_frsize used to not be available in Linux struct statfs). 74 1.1.10.2 mjf * However, glibc 2.3.3 statvfs() wrapper fails to adjust the block 75 1.1.10.2 mjf * counts for different f_frsize if f_frsize is provided by the kernel. 76 1.1.10.2 mjf * POSIX conforming apps thus get wrong size if f_frsize 77 1.1.10.2 mjf * is different to f_bsize. Thus, we just pretend we don't 78 1.1.10.2 mjf * support f_frsize. 79 1.1.10.2 mjf */ 80 1.1.10.2 mjf 81 1.1.10.2 mjf lsp->l_fbsize = bsp->f_frsize; 82 1.1.10.2 mjf lsp->l_ffrsize = 0; /* compat */ 83 1.1.10.2 mjf lsp->l_fblocks = bsp->f_blocks; 84 1.1.10.2 mjf lsp->l_fbfree = bsp->f_bfree; 85 1.1.10.2 mjf lsp->l_fbavail = bsp->f_bavail; 86 1.1.10.2 mjf lsp->l_ffiles = bsp->f_files; 87 1.1.10.2 mjf lsp->l_fffree = bsp->f_ffree; 88 1.1.10.2 mjf /* Linux sets the fsid to 0..., we don't */ 89 1.1.10.2 mjf lsp->l_ffsid.val[0] = bsp->f_fsidx.__fsid_val[0]; 90 1.1.10.2 mjf lsp->l_ffsid.val[1] = bsp->f_fsidx.__fsid_val[1]; 91 1.1.10.2 mjf lsp->l_fnamelen = bsp->f_namemax; 92 1.1.10.2 mjf (void)memset(lsp->l_fspare, 0, sizeof(lsp->l_fspare)); 93 1.1.10.2 mjf } 94 1.1.10.2 mjf 95 1.1.10.2 mjf #endif /* !_LINUX_STATFS_H */ 96
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