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 #include "xlat/statfs_flags.h"
  40
  41 static const char *
  42 sprintfstype(const unsigned int magic)
  43 {
  44         static char buf[32];
  45         const char *s;
  46
  47         s = xlat_search(fsmagic, ARRAY_SIZE(fsmagic), magic);
  48         if (s)
  49                 return s;
  50         sprintf(buf, "%#x", magic);
  51         return buf;
  52 }
  53
  54 static void
  55 print_statfs_flags(const char *const prefix, const unsigned int flags)
  56 {
  57         if (flags & ST_VALID) {
  58                 tprints(prefix);
  59                 printflags(statfs_flags, flags, "ST_???");
  60         }
  61 }
  62
  63 static void
  64 printstatfs(struct tcb *tcp, const long addr)
  65 {
  66         struct statfs statbuf;
  67
  68         if (umove_or_printaddr(tcp, addr, &statbuf))
  69                 return;
  70         tprintf("{f_type=%s, f_bsize=%lu, f_blocks=%lu, f_bfree=%lu, ",
  71                 sprintfstype(statbuf.f_type),
  72                 (unsigned long)statbuf.f_bsize,
  73                 (unsigned long)statbuf.f_blocks,
  74                 (unsigned long)statbuf.f_bfree);
  75         tprintf("f_bavail=%lu, f_files=%lu, f_ffree=%lu, f_fsid={%d, %d}",
  76                 (unsigned long)statbuf.f_bavail,
  77                 (unsigned long)statbuf.f_files,
  78                 (unsigned long)statbuf.f_ffree,
  79                 statbuf.f_fsid.__val[0], statbuf.f_fsid.__val[1]);
  80         tprintf(", f_namelen=%lu", (unsigned long)statbuf.f_namelen);
  81 #ifdef _STATFS_F_FRSIZE
  82         tprintf(", f_frsize=%lu", (unsigned long)statbuf.f_frsize);
  83 #endif
  84 #ifdef _STATFS_F_FLAGS
  85         print_statfs_flags(", f_flags=", statbuf.f_flags);
  86 #endif
  87         tprints("}");
  88 }
  89
  90 SYS_FUNC(statfs)
  91 {
  92         if (entering(tcp)) {
  93                 printpath(tcp, tcp->u_arg[0]);
  94                 tprints(", ");
  95         } else {
  96                 printstatfs(tcp, tcp->u_arg[1]);
  97         }
  98         return 0;
  99 }
 100
 101 SYS_FUNC(fstatfs)
 102 {
 103         if (entering(tcp)) {
 104                 printfd(tcp, tcp->u_arg[0]);
 105                 tprints(", ");
 106         } else {
 107                 printstatfs(tcp, tcp->u_arg[1]);
 108         }
 109         return 0;
 110 }
 111
 112 #ifdef HAVE_STRUCT_STATFS64
 113 static void
 114 printstatfs64(struct tcb *tcp, long addr)
 115 {
 116         struct statfs64 statbuf;
 117
 118         if (umove_or_printaddr(tcp, addr, &statbuf))
 119                 return;
 120         tprintf("{f_type=%s, f_bsize=%llu, f_blocks=%llu, f_bfree=%llu, ",
 121                 sprintfstype(statbuf.f_type),
 122                 (unsigned long long)statbuf.f_bsize,
 123                 (unsigned long long)statbuf.f_blocks,
 124                 (unsigned long long)statbuf.f_bfree);
 125         tprintf("f_bavail=%llu, f_files=%llu, f_ffree=%llu, f_fsid={%d, %d}",
 126                 (unsigned long long)statbuf.f_bavail,
 127                 (unsigned long long)statbuf.f_files,
 128                 (unsigned long long)statbuf.f_ffree,
 129                 statbuf.f_fsid.__val[0], statbuf.f_fsid.__val[1]);
 130         tprintf(", f_namelen=%lu", (unsigned long)statbuf.f_namelen);
 131 #ifdef _STATFS_F_FRSIZE
 132         tprintf(", f_frsize=%llu", (unsigned long long)statbuf.f_frsize);
 133 #endif
 134 #ifdef _STATFS_F_FLAGS
 135         print_statfs_flags(", f_flags=", statbuf.f_flags);
 136 #endif
 137         tprints("}");
 138 }
 139
 140 struct compat_statfs64 {
 141         uint32_t f_type;
 142         uint32_t f_bsize;
 143         uint64_t f_blocks;
 144         uint64_t f_bfree;
 145         uint64_t f_bavail;
 146         uint64_t f_files;
 147         uint64_t f_ffree;
 148         fsid_t f_fsid;
 149         uint32_t f_namelen;
 150         uint32_t f_frsize;
 151         uint32_t f_flags;
 152         uint32_t f_spare[4];
 153 }
 154 #if defined AARCH64 || defined X86_64 || defined X32 || defined IA64
 155   ATTRIBUTE_PACKED ATTRIBUTE_ALIGNED(4)
 156 #endif
 157 ;
 158 #if defined AARCH64 || defined ARM
 159 /* See arch/arm/kernel/sys_oabi-compat.c for details. */
 160 # define COMPAT_STATFS64_PADDED_SIZE (sizeof(struct compat_statfs64) + 4)
 161 #endif
 162
 163 static void
 164 printcompat_statfs64(struct tcb *tcp, const long addr)
 165 {
 166         struct compat_statfs64 statbuf;
 167
 168         if (umove_or_printaddr(tcp, addr, &statbuf))
 169                 return;
 170         tprintf("{f_type=%s, f_bsize=%lu, f_blocks=%llu, f_bfree=%llu, ",
 171                 sprintfstype(statbuf.f_type),
 172                 (unsigned long)statbuf.f_bsize,
 173                 (unsigned long long)statbuf.f_blocks,
 174                 (unsigned long long)statbuf.f_bfree);
 175         tprintf("f_bavail=%llu, f_files=%llu, f_ffree=%llu, f_fsid={%d, %d}",
 176                 (unsigned long long)statbuf.f_bavail,
 177                 (unsigned long long)statbuf.f_files,
 178                 (unsigned long long)statbuf.f_ffree,
 179                 statbuf.f_fsid.__val[0], statbuf.f_fsid.__val[1]);
 180         tprintf(", f_namelen=%lu", (unsigned long)statbuf.f_namelen);
 181         tprintf(", f_frsize=%lu", (unsigned long)statbuf.f_frsize);
 182         print_statfs_flags(", f_flags=", statbuf.f_flags);
 183         tprints("}");
 184 }
 185
 186 static int
 187 do_statfs64_fstatfs64(struct tcb *tcp)
 188 {
 189         if (entering(tcp)) {
 190                 tprintf(", %lu, ", tcp->u_arg[1]);
 191         } else {
 192                 if (tcp->u_arg[1] == sizeof(struct statfs64))
 193                         printstatfs64(tcp, tcp->u_arg[2]);
 194                 else if (tcp->u_arg[1] == sizeof(struct compat_statfs64)
 195 #ifdef COMPAT_STATFS64_PADDED_SIZE
 196                          || tcp->u_arg[1] == COMPAT_STATFS64_PADDED_SIZE
 197 #endif
 198                                                                         )
 199                         printcompat_statfs64(tcp, tcp->u_arg[2]);
 200                 else
 201                         tprints("{???}");
 202         }
 203         return 0;
 204 }
 205
 206 SYS_FUNC(statfs64)
 207 {
 208         if (entering(tcp))
 209                 printpath(tcp, tcp->u_arg[0]);
 210         return do_statfs64_fstatfs64(tcp);
 211 }
 212
 213 SYS_FUNC(fstatfs64)
 214 {
 215         if (entering(tcp))
 216                 printfd(tcp, tcp->u_arg[0]);
 217         return do_statfs64_fstatfs64(tcp);
 218 }
 219 #endif /* HAVE_STRUCT_STATFS64 */