diff options
Diffstat (limited to 'fs/compat.c')
-rw-r--r-- | fs/compat.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/fs/compat.c b/fs/compat.c index aae13d31612f..5f9ec449c799 100644 --- a/fs/compat.c +++ b/fs/compat.c | |||
@@ -137,6 +137,45 @@ asmlinkage long compat_sys_utimes(char __user *filename, struct compat_timeval _ | |||
137 | return compat_sys_futimesat(AT_FDCWD, filename, t); | 137 | return compat_sys_futimesat(AT_FDCWD, filename, t); |
138 | } | 138 | } |
139 | 139 | ||
140 | static int cp_compat_stat(struct kstat *stat, struct compat_stat __user *ubuf) | ||
141 | { | ||
142 | compat_ino_t ino = stat->ino; | ||
143 | typeof(ubuf->st_uid) uid = 0; | ||
144 | typeof(ubuf->st_gid) gid = 0; | ||
145 | int err; | ||
146 | |||
147 | SET_UID(uid, stat->uid); | ||
148 | SET_GID(gid, stat->gid); | ||
149 | |||
150 | if ((u64) stat->size > MAX_NON_LFS || | ||
151 | !old_valid_dev(stat->dev) || | ||
152 | !old_valid_dev(stat->rdev)) | ||
153 | return -EOVERFLOW; | ||
154 | if (sizeof(ino) < sizeof(stat->ino) && ino != stat->ino) | ||
155 | return -EOVERFLOW; | ||
156 | |||
157 | if (clear_user(ubuf, sizeof(*ubuf))) | ||
158 | return -EFAULT; | ||
159 | |||
160 | err = __put_user(old_encode_dev(stat->dev), &ubuf->st_dev); | ||
161 | err |= __put_user(ino, &ubuf->st_ino); | ||
162 | err |= __put_user(stat->mode, &ubuf->st_mode); | ||
163 | err |= __put_user(stat->nlink, &ubuf->st_nlink); | ||
164 | err |= __put_user(uid, &ubuf->st_uid); | ||
165 | err |= __put_user(gid, &ubuf->st_gid); | ||
166 | err |= __put_user(old_encode_dev(stat->rdev), &ubuf->st_rdev); | ||
167 | err |= __put_user(stat->size, &ubuf->st_size); | ||
168 | err |= __put_user(stat->atime.tv_sec, &ubuf->st_atime); | ||
169 | err |= __put_user(stat->atime.tv_nsec, &ubuf->st_atime_nsec); | ||
170 | err |= __put_user(stat->mtime.tv_sec, &ubuf->st_mtime); | ||
171 | err |= __put_user(stat->mtime.tv_nsec, &ubuf->st_mtime_nsec); | ||
172 | err |= __put_user(stat->ctime.tv_sec, &ubuf->st_ctime); | ||
173 | err |= __put_user(stat->ctime.tv_nsec, &ubuf->st_ctime_nsec); | ||
174 | err |= __put_user(stat->blksize, &ubuf->st_blksize); | ||
175 | err |= __put_user(stat->blocks, &ubuf->st_blocks); | ||
176 | return err; | ||
177 | } | ||
178 | |||
140 | asmlinkage long compat_sys_newstat(char __user * filename, | 179 | asmlinkage long compat_sys_newstat(char __user * filename, |
141 | struct compat_stat __user *statbuf) | 180 | struct compat_stat __user *statbuf) |
142 | { | 181 | { |