1 /* 2 * Copyright (c) 2014-2016 Dmitry V. Levin <ldv (at) altlinux.org> 3 * Copyright (c) 2016-2017 The strace developers. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include "defs.h" 30 31 #include DEF_MPERS_TYPE(struct_statfs) 32 #include DEF_MPERS_TYPE(struct_statfs64) 33 34 #include <linux/types.h> 35 #include <asm/statfs.h> 36 typedef struct statfs struct_statfs; 37 typedef struct statfs64 struct_statfs64; 38 39 #include MPERS_DEFS 40 41 #include "statfs.h" 42 43 MPERS_PRINTER_DECL(bool, fetch_struct_statfs, 44 struct tcb *const tcp, const kernel_ulong_t addr, 45 struct strace_statfs *const p) 46 { 47 struct_statfs b; 48 49 if (umove_or_printaddr(tcp, addr, &b)) 50 return false; 51 52 p->f_type = zero_extend_signed_to_ull(b.f_type); 53 p->f_bsize = zero_extend_signed_to_ull(b.f_bsize); 54 p->f_blocks = zero_extend_signed_to_ull(b.f_blocks); 55 p->f_bfree = zero_extend_signed_to_ull(b.f_bfree); 56 p->f_bavail = zero_extend_signed_to_ull(b.f_bavail); 57 p->f_files = zero_extend_signed_to_ull(b.f_files); 58 p->f_ffree = zero_extend_signed_to_ull(b.f_ffree); 59 #if defined HAVE_STRUCT_STATFS_F_FSID_VAL 60 p->f_fsid[0] = zero_extend_signed_to_ull(b.f_fsid.val[0]); 61 p->f_fsid[1] = zero_extend_signed_to_ull(b.f_fsid.val[1]); 62 #elif defined HAVE_STRUCT_STATFS_F_FSID___VAL 63 p->f_fsid[0] = zero_extend_signed_to_ull(b.f_fsid.__val[0]); 64 p->f_fsid[1] = zero_extend_signed_to_ull(b.f_fsid.__val[1]); 65 #endif 66 p->f_namelen = zero_extend_signed_to_ull(b.f_namelen); 67 #ifdef HAVE_STRUCT_STATFS_F_FRSIZE 68 p->f_frsize = zero_extend_signed_to_ull(b.f_frsize); 69 #endif 70 #ifdef HAVE_STRUCT_STATFS_F_FLAGS 71 p->f_flags = zero_extend_signed_to_ull(b.f_flags); 72 #endif 73 74 return true; 75 } 76 77 #if defined ARM || (defined AARCH64 && defined IN_MPERS) 78 /* See arch/arm/kernel/sys_oabi-compat.c for details. */ 79 # define COMPAT_STATFS64_PADDED_SIZE (sizeof(struct_statfs64) + 4) 80 #endif 81 82 MPERS_PRINTER_DECL(bool, fetch_struct_statfs64, 83 struct tcb *const tcp, const kernel_ulong_t addr, 84 const kernel_ulong_t size, struct strace_statfs *const p) 85 { 86 struct_statfs64 b; 87 88 if (sizeof(b) != size 89 #ifdef COMPAT_STATFS64_PADDED_SIZE 90 && sizeof(b) != COMPAT_STATFS64_PADDED_SIZE 91 #endif 92 ) { 93 printaddr(addr); 94 return false; 95 } 96 97 if (umove_or_printaddr(tcp, addr, &b)) 98 return false; 99 100 p->f_type = zero_extend_signed_to_ull(b.f_type); 101 p->f_bsize = zero_extend_signed_to_ull(b.f_bsize); 102 p->f_blocks = zero_extend_signed_to_ull(b.f_blocks); 103 p->f_bfree = zero_extend_signed_to_ull(b.f_bfree); 104 p->f_bavail = zero_extend_signed_to_ull(b.f_bavail); 105 p->f_files = zero_extend_signed_to_ull(b.f_files); 106 p->f_ffree = zero_extend_signed_to_ull(b.f_ffree); 107 #if defined HAVE_STRUCT_STATFS64_F_FSID_VAL 108 p->f_fsid[0] = zero_extend_signed_to_ull(b.f_fsid.val[0]); 109 p->f_fsid[1] = zero_extend_signed_to_ull(b.f_fsid.val[1]); 110 #elif defined HAVE_STRUCT_STATFS64_F_FSID___VAL 111 p->f_fsid[0] = zero_extend_signed_to_ull(b.f_fsid.__val[0]); 112 p->f_fsid[1] = zero_extend_signed_to_ull(b.f_fsid.__val[1]); 113 #endif 114 p->f_namelen = zero_extend_signed_to_ull(b.f_namelen); 115 #ifdef HAVE_STRUCT_STATFS64_F_FRSIZE 116 p->f_frsize = zero_extend_signed_to_ull(b.f_frsize); 117 #endif 118 #ifdef HAVE_STRUCT_STATFS64_F_FLAGS 119 p->f_flags = zero_extend_signed_to_ull(b.f_flags); 120 #endif 121 122 return true; 123 } 124
