granicus.if.org Git - strace/blob - statfs.c

   1 /*
   2  * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
   3  * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
   4  * Copyright (c) 1993-1996 Rick Sladkey <jrs@world.std.com>
   5  * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
   6  * Copyright (c) 2003 Ulrich Drepper <drepper@redhat.com>
   7  * Copyright (c) 2012 Andreas Schwab <schwab@linux-m68k.org>
   8  * Copyright (c) 2014-2015 Dmitry V. Levin <ldv@altlinux.org>
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. The name of the author may not be used to endorse or promote products
  20  *    derived from this software without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include "defs.h"
  35 #ifdef HAVE_SYS_VFS_H
  36 # include <sys/vfs.h>
  37 #endif
  38 #include "xlat/fsmagic.h"
  39
  40 static const char *
  41 sprintfstype(const unsigned int magic)
  42 {
  43         static char buf[32];
  44         const char *s;
  45
  46         s = xlat_search(fsmagic, ARRAY_SIZE(fsmagic), magic);
  47         if (s)
  48                 return s;
  49         sprintf(buf, "%#x", magic);
  50         return buf;
  51 }
  52
  53 static void
  54 printstatfs(struct tcb *tcp, const long addr)
  55 {
  56         struct statfs statbuf;
  57
  58         if (umove_or_printaddr(tcp, addr, &statbuf))
  59                 return;
  60         tprintf("{f_type=%s, f_bsize=%lu, f_blocks=%lu, f_bfree=%lu, ",
  61                 sprintfstype(statbuf.f_type),
  62                 (unsigned long)statbuf.f_bsize,
  63                 (unsigned long)statbuf.f_blocks,
  64                 (unsigned long)statbuf.f_bfree);
  65         tprintf("f_bavail=%lu, f_files=%lu, f_ffree=%lu, f_fsid={%d, %d}",
  66                 (unsigned long)statbuf.f_bavail,
  67                 (unsigned long)statbuf.f_files,
  68                 (unsigned long)statbuf.f_ffree,
  69                 statbuf.f_fsid.__val[0], statbuf.f_fsid.__val[1]);
  70         tprintf(", f_namelen=%lu", (unsigned long)statbuf.f_namelen);
  71 #ifdef _STATFS_F_FRSIZE
  72         tprintf(", f_frsize=%lu", (unsigned long)statbuf.f_frsize);
  73 #endif
  74 #ifdef _STATFS_F_FLAGS
  75         tprintf(", f_flags=%lu", (unsigned long)statbuf.f_flags);
  76 #endif
  77         tprints("}");
  78 }
  79
  80 SYS_FUNC(statfs)
  81 {
  82         if (entering(tcp)) {
  83                 printpath(tcp, tcp->u_arg[0]);
  84                 tprints(", ");
  85         } else {
  86                 printstatfs(tcp, tcp->u_arg[1]);
  87         }
  88         return 0;
  89 }
  90
  91 SYS_FUNC(fstatfs)
  92 {
  93         if (entering(tcp)) {
  94                 printfd(tcp, tcp->u_arg[0]);
  95                 tprints(", ");
  96         } else {
  97                 printstatfs(tcp, tcp->u_arg[1]);
  98         }
  99         return 0;
 100 }
 101
 102 #ifdef HAVE_STRUCT_STATFS64
 103 static void
 104 printstatfs64(struct tcb *tcp, long addr)
 105 {
 106         struct statfs64 statbuf;
 107
 108         if (umove_or_printaddr(tcp, addr, &statbuf))
 109                 return;
 110         tprintf("{f_type=%s, f_bsize=%llu, f_blocks=%llu, f_bfree=%llu, ",
 111                 sprintfstype(statbuf.f_type),
 112                 (unsigned long long)statbuf.f_bsize,
 113                 (unsigned long long)statbuf.f_blocks,
 114                 (unsigned long long)statbuf.f_bfree);
 115         tprintf("f_bavail=%llu, f_files=%llu, f_ffree=%llu, f_fsid={%d, %d}",
 116                 (unsigned long long)statbuf.f_bavail,
 117                 (unsigned long long)statbuf.f_files,
 118                 (unsigned long long)statbuf.f_ffree,
 119                 statbuf.f_fsid.__val[0], statbuf.f_fsid.__val[1]);
 120         tprintf(", f_namelen=%lu", (unsigned long)statbuf.f_namelen);
 121 #ifdef _STATFS_F_FRSIZE
 122         tprintf(", f_frsize=%llu", (unsigned long long)statbuf.f_frsize);
 123 #endif
 124 #ifdef _STATFS_F_FLAGS
 125         tprintf(", f_flags=%llu", (unsigned long long)statbuf.f_flags);
 126 #endif
 127         tprints("}");
 128 }
 129
 130 struct compat_statfs64 {
 131         uint32_t f_type;
 132         uint32_t f_bsize;
 133         uint64_t f_blocks;
 134         uint64_t f_bfree;
 135         uint64_t f_bavail;
 136         uint64_t f_files;
 137         uint64_t f_ffree;
 138         fsid_t f_fsid;
 139         uint32_t f_namelen;
 140         uint32_t f_frsize;
 141         uint32_t f_flags;
 142         uint32_t f_spare[4];
 143 }
 144 #if defined AARCH64 || defined X86_64 || defined X32 || defined IA64
 145   ATTRIBUTE_PACKED ATTRIBUTE_ALIGNED(4)
 146 #endif
 147 ;
 148 #if defined AARCH64 || defined ARM
 149 /* See arch/arm/kernel/sys_oabi-compat.c for details. */
 150 # define COMPAT_STATFS64_PADDED_SIZE (sizeof(struct compat_statfs64) + 4)
 151 #endif
 152
 153 static void
 154 printcompat_statfs64(struct tcb *tcp, const long addr)
 155 {
 156         struct compat_statfs64 statbuf;
 157
 158         if (umove_or_printaddr(tcp, addr, &statbuf))
 159                 return;
 160         tprintf("{f_type=%s, f_bsize=%lu, f_blocks=%llu, f_bfree=%llu, ",
 161                 sprintfstype(statbuf.f_type),
 162                 (unsigned long)statbuf.f_bsize,
 163                 (unsigned long long)statbuf.f_blocks,
 164                 (unsigned long long)statbuf.f_bfree);
 165         tprintf("f_bavail=%llu, f_files=%llu, f_ffree=%llu, f_fsid={%d, %d}",
 166                 (unsigned long long)statbuf.f_bavail,
 167                 (unsigned long long)statbuf.f_files,
 168                 (unsigned long long)statbuf.f_ffree,
 169                 statbuf.f_fsid.__val[0], statbuf.f_fsid.__val[1]);
 170         tprintf(", f_namelen=%lu", (unsigned long)statbuf.f_namelen);
 171         tprintf(", f_frsize=%lu", (unsigned long)statbuf.f_frsize);
 172         tprintf(", f_flags=%lu}", (unsigned long)statbuf.f_frsize);
 173 }
 174
 175 static int
 176 do_statfs64_fstatfs64(struct tcb *tcp)
 177 {
 178         if (entering(tcp)) {
 179                 tprintf(", %lu, ", tcp->u_arg[1]);
 180         } else {
 181                 if (tcp->u_arg[1] == sizeof(struct statfs64))
 182                         printstatfs64(tcp, tcp->u_arg[2]);
 183                 else if (tcp->u_arg[1] == sizeof(struct compat_statfs64)
 184 #ifdef COMPAT_STATFS64_PADDED_SIZE
 185                          || tcp->u_arg[1] == COMPAT_STATFS64_PADDED_SIZE
 186 #endif
 187                                                                         )
 188                         printcompat_statfs64(tcp, tcp->u_arg[2]);
 189                 else
 190                         tprints("{???}");
 191         }
 192         return 0;
 193 }
 194
 195 SYS_FUNC(statfs64)
 196 {
 197         if (entering(tcp))
 198                 printpath(tcp, tcp->u_arg[0]);
 199         return do_statfs64_fstatfs64(tcp);
 200 }
 201
 202 SYS_FUNC(fstatfs64)
 203 {
 204         if (entering(tcp))
 205                 printfd(tcp, tcp->u_arg[0]);
 206         return do_statfs64_fstatfs64(tcp);
 207 }
 208 #endif /* HAVE_STRUCT_STATFS64 */
 209
 210 #ifdef ALPHA
 211 SYS_FUNC(osf_statfs)
 212 {
 213         if (entering(tcp)) {
 214                 printpath(tcp, tcp->u_arg[0]);
 215                 tprints(", ");
 216         } else {
 217                 printstatfs(tcp, tcp->u_arg[1]);
 218                 tprintf(", %lu", tcp->u_arg[2]);
 219         }
 220         return 0;
 221 }
 222
 223 SYS_FUNC(osf_fstatfs)
 224 {
 225         if (entering(tcp)) {
 226                 tprintf("%lu, ", tcp->u_arg[0]);
 227         } else {
 228                 printstatfs(tcp, tcp->u_arg[1]);
 229                 tprintf(", %lu", tcp->u_arg[2]);
 230         }
 231         return 0;
 232 }
 233 #endif /* ALPHA */