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TOMOYO Linux Cross Reference
Linux/fs/statfs.c

Version: ~ [ linux-6.11.5 ] ~ [ linux-6.10.14 ] ~ [ linux-6.9.12 ] ~ [ linux-6.8.12 ] ~ [ linux-6.7.12 ] ~ [ linux-6.6.58 ] ~ [ linux-6.5.13 ] ~ [ linux-6.4.16 ] ~ [ linux-6.3.13 ] ~ [ linux-6.2.16 ] ~ [ linux-6.1.114 ] ~ [ linux-6.0.19 ] ~ [ linux-5.19.17 ] ~ [ linux-5.18.19 ] ~ [ linux-5.17.15 ] ~ [ linux-5.16.20 ] ~ [ linux-5.15.169 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.228 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.284 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.322 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.336 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.337 ] ~ [ linux-4.4.302 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.9 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

Diff markup

Differences between /fs/statfs.c (Version linux-6.11.5) and /fs/statfs.c (Version linux-4.11.12)


  1 // SPDX-License-Identifier: GPL-2.0            << 
  2 #include <linux/syscalls.h>                         1 #include <linux/syscalls.h>
  3 #include <linux/export.h>                           2 #include <linux/export.h>
  4 #include <linux/fs.h>                               3 #include <linux/fs.h>
  5 #include <linux/file.h>                             4 #include <linux/file.h>
  6 #include <linux/mount.h>                            5 #include <linux/mount.h>
  7 #include <linux/namei.h>                            6 #include <linux/namei.h>
  8 #include <linux/statfs.h>                           7 #include <linux/statfs.h>
  9 #include <linux/security.h>                         8 #include <linux/security.h>
 10 #include <linux/uaccess.h>                          9 #include <linux/uaccess.h>
 11 #include <linux/compat.h>                      << 
 12 #include "internal.h"                              10 #include "internal.h"
 13                                                    11 
 14 static int flags_by_mnt(int mnt_flags)             12 static int flags_by_mnt(int mnt_flags)
 15 {                                                  13 {
 16         int flags = 0;                             14         int flags = 0;
 17                                                    15 
 18         if (mnt_flags & MNT_READONLY)              16         if (mnt_flags & MNT_READONLY)
 19                 flags |= ST_RDONLY;                17                 flags |= ST_RDONLY;
 20         if (mnt_flags & MNT_NOSUID)                18         if (mnt_flags & MNT_NOSUID)
 21                 flags |= ST_NOSUID;                19                 flags |= ST_NOSUID;
 22         if (mnt_flags & MNT_NODEV)                 20         if (mnt_flags & MNT_NODEV)
 23                 flags |= ST_NODEV;                 21                 flags |= ST_NODEV;
 24         if (mnt_flags & MNT_NOEXEC)                22         if (mnt_flags & MNT_NOEXEC)
 25                 flags |= ST_NOEXEC;                23                 flags |= ST_NOEXEC;
 26         if (mnt_flags & MNT_NOATIME)               24         if (mnt_flags & MNT_NOATIME)
 27                 flags |= ST_NOATIME;               25                 flags |= ST_NOATIME;
 28         if (mnt_flags & MNT_NODIRATIME)            26         if (mnt_flags & MNT_NODIRATIME)
 29                 flags |= ST_NODIRATIME;            27                 flags |= ST_NODIRATIME;
 30         if (mnt_flags & MNT_RELATIME)              28         if (mnt_flags & MNT_RELATIME)
 31                 flags |= ST_RELATIME;              29                 flags |= ST_RELATIME;
 32         if (mnt_flags & MNT_NOSYMFOLLOW)       << 
 33                 flags |= ST_NOSYMFOLLOW;       << 
 34         return flags;                              30         return flags;
 35 }                                                  31 }
 36                                                    32 
 37 static int flags_by_sb(int s_flags)                33 static int flags_by_sb(int s_flags)
 38 {                                                  34 {
 39         int flags = 0;                             35         int flags = 0;
 40         if (s_flags & SB_SYNCHRONOUS)          !!  36         if (s_flags & MS_SYNCHRONOUS)
 41                 flags |= ST_SYNCHRONOUS;           37                 flags |= ST_SYNCHRONOUS;
 42         if (s_flags & SB_MANDLOCK)             !!  38         if (s_flags & MS_MANDLOCK)
 43                 flags |= ST_MANDLOCK;              39                 flags |= ST_MANDLOCK;
 44         if (s_flags & SB_RDONLY)               << 
 45                 flags |= ST_RDONLY;            << 
 46         return flags;                              40         return flags;
 47 }                                                  41 }
 48                                                    42 
 49 static int calculate_f_flags(struct vfsmount *     43 static int calculate_f_flags(struct vfsmount *mnt)
 50 {                                                  44 {
 51         return ST_VALID | flags_by_mnt(mnt->mn     45         return ST_VALID | flags_by_mnt(mnt->mnt_flags) |
 52                 flags_by_sb(mnt->mnt_sb->s_fla     46                 flags_by_sb(mnt->mnt_sb->s_flags);
 53 }                                                  47 }
 54                                                    48 
 55 static int statfs_by_dentry(struct dentry *den     49 static int statfs_by_dentry(struct dentry *dentry, struct kstatfs *buf)
 56 {                                                  50 {
 57         int retval;                                51         int retval;
 58                                                    52 
 59         if (!dentry->d_sb->s_op->statfs)           53         if (!dentry->d_sb->s_op->statfs)
 60                 return -ENOSYS;                    54                 return -ENOSYS;
 61                                                    55 
 62         memset(buf, 0, sizeof(*buf));              56         memset(buf, 0, sizeof(*buf));
 63         retval = security_sb_statfs(dentry);       57         retval = security_sb_statfs(dentry);
 64         if (retval)                                58         if (retval)
 65                 return retval;                     59                 return retval;
 66         retval = dentry->d_sb->s_op->statfs(de     60         retval = dentry->d_sb->s_op->statfs(dentry, buf);
 67         if (retval == 0 && buf->f_frsize == 0)     61         if (retval == 0 && buf->f_frsize == 0)
 68                 buf->f_frsize = buf->f_bsize;      62                 buf->f_frsize = buf->f_bsize;
 69         return retval;                             63         return retval;
 70 }                                                  64 }
 71                                                    65 
 72 int vfs_get_fsid(struct dentry *dentry, __kern << 
 73 {                                              << 
 74         struct kstatfs st;                     << 
 75         int error;                             << 
 76                                                << 
 77         error = statfs_by_dentry(dentry, &st); << 
 78         if (error)                             << 
 79                 return error;                  << 
 80                                                << 
 81         *fsid = st.f_fsid;                     << 
 82         return 0;                              << 
 83 }                                              << 
 84 EXPORT_SYMBOL(vfs_get_fsid);                   << 
 85                                                << 
 86 int vfs_statfs(const struct path *path, struct     66 int vfs_statfs(const struct path *path, struct kstatfs *buf)
 87 {                                                  67 {
 88         int error;                                 68         int error;
 89                                                    69 
 90         error = statfs_by_dentry(path->dentry,     70         error = statfs_by_dentry(path->dentry, buf);
 91         if (!error)                                71         if (!error)
 92                 buf->f_flags = calculate_f_fla     72                 buf->f_flags = calculate_f_flags(path->mnt);
 93         return error;                              73         return error;
 94 }                                                  74 }
 95 EXPORT_SYMBOL(vfs_statfs);                         75 EXPORT_SYMBOL(vfs_statfs);
 96                                                    76 
 97 int user_statfs(const char __user *pathname, s     77 int user_statfs(const char __user *pathname, struct kstatfs *st)
 98 {                                                  78 {
 99         struct path path;                          79         struct path path;
100         int error;                                 80         int error;
101         unsigned int lookup_flags = LOOKUP_FOL     81         unsigned int lookup_flags = LOOKUP_FOLLOW|LOOKUP_AUTOMOUNT;
102 retry:                                             82 retry:
103         error = user_path_at(AT_FDCWD, pathnam     83         error = user_path_at(AT_FDCWD, pathname, lookup_flags, &path);
104         if (!error) {                              84         if (!error) {
105                 error = vfs_statfs(&path, st);     85                 error = vfs_statfs(&path, st);
106                 path_put(&path);                   86                 path_put(&path);
107                 if (retry_estale(error, lookup     87                 if (retry_estale(error, lookup_flags)) {
108                         lookup_flags |= LOOKUP     88                         lookup_flags |= LOOKUP_REVAL;
109                         goto retry;                89                         goto retry;
110                 }                                  90                 }
111         }                                          91         }
112         return error;                              92         return error;
113 }                                                  93 }
114                                                    94 
115 int fd_statfs(int fd, struct kstatfs *st)          95 int fd_statfs(int fd, struct kstatfs *st)
116 {                                                  96 {
117         struct fd f = fdget_raw(fd);               97         struct fd f = fdget_raw(fd);
118         int error = -EBADF;                        98         int error = -EBADF;
119         if (f.file) {                              99         if (f.file) {
120                 error = vfs_statfs(&f.file->f_    100                 error = vfs_statfs(&f.file->f_path, st);
121                 fdput(f);                         101                 fdput(f);
122         }                                         102         }
123         return error;                             103         return error;
124 }                                                 104 }
125                                                   105 
126 static int do_statfs_native(struct kstatfs *st    106 static int do_statfs_native(struct kstatfs *st, struct statfs __user *p)
127 {                                                 107 {
128         struct statfs buf;                        108         struct statfs buf;
129                                                   109 
130         if (sizeof(buf) == sizeof(*st))           110         if (sizeof(buf) == sizeof(*st))
131                 memcpy(&buf, st, sizeof(*st));    111                 memcpy(&buf, st, sizeof(*st));
132         else {                                    112         else {
133                 memset(&buf, 0, sizeof(buf));  << 
134                 if (sizeof buf.f_blocks == 4)     113                 if (sizeof buf.f_blocks == 4) {
135                         if ((st->f_blocks | st    114                         if ((st->f_blocks | st->f_bfree | st->f_bavail |
136                              st->f_bsize | st-    115                              st->f_bsize | st->f_frsize) &
137                             0xffffffff00000000    116                             0xffffffff00000000ULL)
138                                 return -EOVERF    117                                 return -EOVERFLOW;
139                         /*                        118                         /*
140                          * f_files and f_ffree    119                          * f_files and f_ffree may be -1; it's okay to stuff
141                          * that into 32 bits      120                          * that into 32 bits
142                          */                       121                          */
143                         if (st->f_files != -1     122                         if (st->f_files != -1 &&
144                             (st->f_files & 0xf    123                             (st->f_files & 0xffffffff00000000ULL))
145                                 return -EOVERF    124                                 return -EOVERFLOW;
146                         if (st->f_ffree != -1     125                         if (st->f_ffree != -1 &&
147                             (st->f_ffree & 0xf    126                             (st->f_ffree & 0xffffffff00000000ULL))
148                                 return -EOVERF    127                                 return -EOVERFLOW;
149                 }                                 128                 }
150                                                   129 
151                 buf.f_type = st->f_type;          130                 buf.f_type = st->f_type;
152                 buf.f_bsize = st->f_bsize;        131                 buf.f_bsize = st->f_bsize;
153                 buf.f_blocks = st->f_blocks;      132                 buf.f_blocks = st->f_blocks;
154                 buf.f_bfree = st->f_bfree;        133                 buf.f_bfree = st->f_bfree;
155                 buf.f_bavail = st->f_bavail;      134                 buf.f_bavail = st->f_bavail;
156                 buf.f_files = st->f_files;        135                 buf.f_files = st->f_files;
157                 buf.f_ffree = st->f_ffree;        136                 buf.f_ffree = st->f_ffree;
158                 buf.f_fsid = st->f_fsid;          137                 buf.f_fsid = st->f_fsid;
159                 buf.f_namelen = st->f_namelen;    138                 buf.f_namelen = st->f_namelen;
160                 buf.f_frsize = st->f_frsize;      139                 buf.f_frsize = st->f_frsize;
161                 buf.f_flags = st->f_flags;        140                 buf.f_flags = st->f_flags;
                                                   >> 141                 memset(buf.f_spare, 0, sizeof(buf.f_spare));
162         }                                         142         }
163         if (copy_to_user(p, &buf, sizeof(buf))    143         if (copy_to_user(p, &buf, sizeof(buf)))
164                 return -EFAULT;                   144                 return -EFAULT;
165         return 0;                                 145         return 0;
166 }                                                 146 }
167                                                   147 
168 static int do_statfs64(struct kstatfs *st, str    148 static int do_statfs64(struct kstatfs *st, struct statfs64 __user *p)
169 {                                                 149 {
170         struct statfs64 buf;                      150         struct statfs64 buf;
171         if (sizeof(buf) == sizeof(*st))           151         if (sizeof(buf) == sizeof(*st))
172                 memcpy(&buf, st, sizeof(*st));    152                 memcpy(&buf, st, sizeof(*st));
173         else {                                    153         else {
174                 memset(&buf, 0, sizeof(buf));  << 
175                 buf.f_type = st->f_type;          154                 buf.f_type = st->f_type;
176                 buf.f_bsize = st->f_bsize;        155                 buf.f_bsize = st->f_bsize;
177                 buf.f_blocks = st->f_blocks;      156                 buf.f_blocks = st->f_blocks;
178                 buf.f_bfree = st->f_bfree;        157                 buf.f_bfree = st->f_bfree;
179                 buf.f_bavail = st->f_bavail;      158                 buf.f_bavail = st->f_bavail;
180                 buf.f_files = st->f_files;        159                 buf.f_files = st->f_files;
181                 buf.f_ffree = st->f_ffree;        160                 buf.f_ffree = st->f_ffree;
182                 buf.f_fsid = st->f_fsid;          161                 buf.f_fsid = st->f_fsid;
183                 buf.f_namelen = st->f_namelen;    162                 buf.f_namelen = st->f_namelen;
184                 buf.f_frsize = st->f_frsize;      163                 buf.f_frsize = st->f_frsize;
185                 buf.f_flags = st->f_flags;        164                 buf.f_flags = st->f_flags;
                                                   >> 165                 memset(buf.f_spare, 0, sizeof(buf.f_spare));
186         }                                         166         }
187         if (copy_to_user(p, &buf, sizeof(buf))    167         if (copy_to_user(p, &buf, sizeof(buf)))
188                 return -EFAULT;                   168                 return -EFAULT;
189         return 0;                                 169         return 0;
190 }                                                 170 }
191                                                   171 
192 SYSCALL_DEFINE2(statfs, const char __user *, p    172 SYSCALL_DEFINE2(statfs, const char __user *, pathname, struct statfs __user *, buf)
193 {                                                 173 {
194         struct kstatfs st;                        174         struct kstatfs st;
195         int error = user_statfs(pathname, &st)    175         int error = user_statfs(pathname, &st);
196         if (!error)                               176         if (!error)
197                 error = do_statfs_native(&st,     177                 error = do_statfs_native(&st, buf);
198         return error;                             178         return error;
199 }                                                 179 }
200                                                   180 
201 SYSCALL_DEFINE3(statfs64, const char __user *,    181 SYSCALL_DEFINE3(statfs64, const char __user *, pathname, size_t, sz, struct statfs64 __user *, buf)
202 {                                                 182 {
203         struct kstatfs st;                        183         struct kstatfs st;
204         int error;                                184         int error;
205         if (sz != sizeof(*buf))                   185         if (sz != sizeof(*buf))
206                 return -EINVAL;                   186                 return -EINVAL;
207         error = user_statfs(pathname, &st);       187         error = user_statfs(pathname, &st);
208         if (!error)                               188         if (!error)
209                 error = do_statfs64(&st, buf);    189                 error = do_statfs64(&st, buf);
210         return error;                             190         return error;
211 }                                                 191 }
212                                                   192 
213 SYSCALL_DEFINE2(fstatfs, unsigned int, fd, str    193 SYSCALL_DEFINE2(fstatfs, unsigned int, fd, struct statfs __user *, buf)
214 {                                                 194 {
215         struct kstatfs st;                        195         struct kstatfs st;
216         int error = fd_statfs(fd, &st);           196         int error = fd_statfs(fd, &st);
217         if (!error)                               197         if (!error)
218                 error = do_statfs_native(&st,     198                 error = do_statfs_native(&st, buf);
219         return error;                             199         return error;
220 }                                                 200 }
221                                                   201 
222 SYSCALL_DEFINE3(fstatfs64, unsigned int, fd, s    202 SYSCALL_DEFINE3(fstatfs64, unsigned int, fd, size_t, sz, struct statfs64 __user *, buf)
223 {                                                 203 {
224         struct kstatfs st;                        204         struct kstatfs st;
225         int error;                                205         int error;
226                                                   206 
227         if (sz != sizeof(*buf))                   207         if (sz != sizeof(*buf))
228                 return -EINVAL;                   208                 return -EINVAL;
229                                                   209 
230         error = fd_statfs(fd, &st);               210         error = fd_statfs(fd, &st);
231         if (!error)                               211         if (!error)
232                 error = do_statfs64(&st, buf);    212                 error = do_statfs64(&st, buf);
233         return error;                             213         return error;
234 }                                                 214 }
235                                                   215 
236 static int vfs_ustat(dev_t dev, struct kstatfs !! 216 int vfs_ustat(dev_t dev, struct kstatfs *sbuf)
237 {                                                 217 {
238         struct super_block *s = user_get_super !! 218         struct super_block *s = user_get_super(dev);
239         int err;                                  219         int err;
240         if (!s)                                   220         if (!s)
241                 return -EINVAL;                   221                 return -EINVAL;
242                                                   222 
243         err = statfs_by_dentry(s->s_root, sbuf    223         err = statfs_by_dentry(s->s_root, sbuf);
244         drop_super(s);                            224         drop_super(s);
245         return err;                               225         return err;
246 }                                                 226 }
247                                                   227 
248 SYSCALL_DEFINE2(ustat, unsigned, dev, struct u    228 SYSCALL_DEFINE2(ustat, unsigned, dev, struct ustat __user *, ubuf)
249 {                                                 229 {
250         struct ustat tmp;                         230         struct ustat tmp;
251         struct kstatfs sbuf;                      231         struct kstatfs sbuf;
252         int err = vfs_ustat(new_decode_dev(dev    232         int err = vfs_ustat(new_decode_dev(dev), &sbuf);
253         if (err)                                  233         if (err)
254                 return err;                       234                 return err;
255                                                   235 
256         memset(&tmp,0,sizeof(struct ustat));      236         memset(&tmp,0,sizeof(struct ustat));
257         tmp.f_tfree = sbuf.f_bfree;               237         tmp.f_tfree = sbuf.f_bfree;
258         if (IS_ENABLED(CONFIG_ARCH_32BIT_USTAT !! 238         tmp.f_tinode = sbuf.f_ffree;
259                 tmp.f_tinode = min_t(u64, sbuf << 
260         else                                   << 
261                 tmp.f_tinode = sbuf.f_ffree;   << 
262                                                   239 
263         return copy_to_user(ubuf, &tmp, sizeof    240         return copy_to_user(ubuf, &tmp, sizeof(struct ustat)) ? -EFAULT : 0;
264 }                                                 241 }
265                                                << 
266 #ifdef CONFIG_COMPAT                           << 
267 static int put_compat_statfs(struct compat_sta << 
268 {                                              << 
269         struct compat_statfs buf;              << 
270         if (sizeof ubuf->f_blocks == 4) {      << 
271                 if ((kbuf->f_blocks | kbuf->f_ << 
272                      kbuf->f_bsize | kbuf->f_f << 
273                         return -EOVERFLOW;     << 
274                 /* f_files and f_ffree may be  << 
275                  * to stuff that into 32 bits  << 
276                 if (kbuf->f_files != 0xfffffff << 
277                  && (kbuf->f_files & 0xfffffff << 
278                         return -EOVERFLOW;     << 
279                 if (kbuf->f_ffree != 0xfffffff << 
280                  && (kbuf->f_ffree & 0xfffffff << 
281                         return -EOVERFLOW;     << 
282         }                                      << 
283         memset(&buf, 0, sizeof(struct compat_s << 
284         buf.f_type = kbuf->f_type;             << 
285         buf.f_bsize = kbuf->f_bsize;           << 
286         buf.f_blocks = kbuf->f_blocks;         << 
287         buf.f_bfree = kbuf->f_bfree;           << 
288         buf.f_bavail = kbuf->f_bavail;         << 
289         buf.f_files = kbuf->f_files;           << 
290         buf.f_ffree = kbuf->f_ffree;           << 
291         buf.f_namelen = kbuf->f_namelen;       << 
292         buf.f_fsid.val[0] = kbuf->f_fsid.val[0 << 
293         buf.f_fsid.val[1] = kbuf->f_fsid.val[1 << 
294         buf.f_frsize = kbuf->f_frsize;         << 
295         buf.f_flags = kbuf->f_flags;           << 
296         if (copy_to_user(ubuf, &buf, sizeof(st << 
297                 return -EFAULT;                << 
298         return 0;                              << 
299 }                                              << 
300                                                << 
301 /*                                             << 
302  * The following statfs calls are copies of co << 
303  * should be checked against those from time t << 
304  */                                            << 
305 COMPAT_SYSCALL_DEFINE2(statfs, const char __us << 
306 {                                              << 
307         struct kstatfs tmp;                    << 
308         int error = user_statfs(pathname, &tmp << 
309         if (!error)                            << 
310                 error = put_compat_statfs(buf, << 
311         return error;                          << 
312 }                                              << 
313                                                << 
314 COMPAT_SYSCALL_DEFINE2(fstatfs, unsigned int,  << 
315 {                                              << 
316         struct kstatfs tmp;                    << 
317         int error = fd_statfs(fd, &tmp);       << 
318         if (!error)                            << 
319                 error = put_compat_statfs(buf, << 
320         return error;                          << 
321 }                                              << 
322                                                << 
323 static int put_compat_statfs64(struct compat_s << 
324 {                                              << 
325         struct compat_statfs64 buf;            << 
326                                                << 
327         if ((kbuf->f_bsize | kbuf->f_frsize) & << 
328                 return -EOVERFLOW;             << 
329                                                << 
330         memset(&buf, 0, sizeof(struct compat_s << 
331         buf.f_type = kbuf->f_type;             << 
332         buf.f_bsize = kbuf->f_bsize;           << 
333         buf.f_blocks = kbuf->f_blocks;         << 
334         buf.f_bfree = kbuf->f_bfree;           << 
335         buf.f_bavail = kbuf->f_bavail;         << 
336         buf.f_files = kbuf->f_files;           << 
337         buf.f_ffree = kbuf->f_ffree;           << 
338         buf.f_namelen = kbuf->f_namelen;       << 
339         buf.f_fsid.val[0] = kbuf->f_fsid.val[0 << 
340         buf.f_fsid.val[1] = kbuf->f_fsid.val[1 << 
341         buf.f_frsize = kbuf->f_frsize;         << 
342         buf.f_flags = kbuf->f_flags;           << 
343         if (copy_to_user(ubuf, &buf, sizeof(st << 
344                 return -EFAULT;                << 
345         return 0;                              << 
346 }                                              << 
347                                                << 
348 int kcompat_sys_statfs64(const char __user * p << 
349 {                                              << 
350         struct kstatfs tmp;                    << 
351         int error;                             << 
352                                                << 
353         if (sz != sizeof(*buf))                << 
354                 return -EINVAL;                << 
355                                                << 
356         error = user_statfs(pathname, &tmp);   << 
357         if (!error)                            << 
358                 error = put_compat_statfs64(bu << 
359         return error;                          << 
360 }                                              << 
361                                                << 
362 COMPAT_SYSCALL_DEFINE3(statfs64, const char __ << 
363 {                                              << 
364         return kcompat_sys_statfs64(pathname,  << 
365 }                                              << 
366                                                << 
367 int kcompat_sys_fstatfs64(unsigned int fd, com << 
368 {                                              << 
369         struct kstatfs tmp;                    << 
370         int error;                             << 
371                                                << 
372         if (sz != sizeof(*buf))                << 
373                 return -EINVAL;                << 
374                                                << 
375         error = fd_statfs(fd, &tmp);           << 
376         if (!error)                            << 
377                 error = put_compat_statfs64(bu << 
378         return error;                          << 
379 }                                              << 
380                                                << 
381 COMPAT_SYSCALL_DEFINE3(fstatfs64, unsigned int << 
382 {                                              << 
383         return kcompat_sys_fstatfs64(fd, sz, b << 
384 }                                              << 
385                                                << 
386 /*                                             << 
387  * This is a copy of sys_ustat, just dealing w << 
388  * Given how simple this syscall is that appor << 
389  * than the various conversion hacks.          << 
390  */                                            << 
391 COMPAT_SYSCALL_DEFINE2(ustat, unsigned, dev, s << 
392 {                                              << 
393         struct compat_ustat tmp;               << 
394         struct kstatfs sbuf;                   << 
395         int err = vfs_ustat(new_decode_dev(dev << 
396         if (err)                               << 
397                 return err;                    << 
398                                                << 
399         memset(&tmp, 0, sizeof(struct compat_u << 
400         tmp.f_tfree = sbuf.f_bfree;            << 
401         tmp.f_tinode = sbuf.f_ffree;           << 
402         if (copy_to_user(u, &tmp, sizeof(struc << 
403                 return -EFAULT;                << 
404         return 0;                              << 
405 }                                              << 
406 #endif                                         << 
407                                                   242 

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