55 static int statfs_by_dentry(struct dentry *dentry, struct kstatfs *buf)  in statfs_by_dentry()  argument
62 	memset(buf, 0, sizeof(*buf));  in statfs_by_dentry()
66 	retval = dentry->d_sb->s_op->statfs(dentry, buf);  in statfs_by_dentry()
67 	if (retval == 0 && buf->f_frsize == 0)  in statfs_by_dentry()
68 		buf->f_frsize = buf->f_bsize;  in statfs_by_dentry()
86 int vfs_statfs(const struct path *path, struct kstatfs *buf)  in vfs_statfs()  argument
90 	error = statfs_by_dentry(path->dentry, buf);  in vfs_statfs()
92 		buf->f_flags = calculate_f_flags(path->mnt);  in vfs_statfs()
126 	struct statfs buf;  in do_statfs_native()  local
128 	if (sizeof(buf) == sizeof(*st))  in do_statfs_native()
129 		memcpy(&buf, st, sizeof(*st));  in do_statfs_native()
131 		memset(&buf, 0, sizeof(buf));  in do_statfs_native()
132 		if (sizeof buf.f_blocks == 4) {  in do_statfs_native()
149 		buf.f_type = st->f_type;  in do_statfs_native()
150 		buf.f_bsize = st->f_bsize;  in do_statfs_native()
151 		buf.f_blocks = st->f_blocks;  in do_statfs_native()
152 		buf.f_bfree = st->f_bfree;  in do_statfs_native()
153 		buf.f_bavail = st->f_bavail;  in do_statfs_native()
154 		buf.f_files = st->f_files;  in do_statfs_native()
155 		buf.f_ffree = st->f_ffree;  in do_statfs_native()
156 		buf.f_fsid = st->f_fsid;  in do_statfs_native()
157 		buf.f_namelen = st->f_namelen;  in do_statfs_native()
158 		buf.f_frsize = st->f_frsize;  in do_statfs_native()
159 		buf.f_flags = st->f_flags;  in do_statfs_native()
161 	if (copy_to_user(p, &buf, sizeof(buf)))  in do_statfs_native()
168 	struct statfs64 buf;  in do_statfs64()  local
169 	if (sizeof(buf) == sizeof(*st))  in do_statfs64()
170 		memcpy(&buf, st, sizeof(*st));  in do_statfs64()
172 		memset(&buf, 0, sizeof(buf));  in do_statfs64()
173 		buf.f_type = st->f_type;  in do_statfs64()
174 		buf.f_bsize = st->f_bsize;  in do_statfs64()
175 		buf.f_blocks = st->f_blocks;  in do_statfs64()
176 		buf.f_bfree = st->f_bfree;  in do_statfs64()
177 		buf.f_bavail = st->f_bavail;  in do_statfs64()
178 		buf.f_files = st->f_files;  in do_statfs64()
179 		buf.f_ffree = st->f_ffree;  in do_statfs64()
180 		buf.f_fsid = st->f_fsid;  in do_statfs64()
181 		buf.f_namelen = st->f_namelen;  in do_statfs64()
182 		buf.f_frsize = st->f_frsize;  in do_statfs64()
183 		buf.f_flags = st->f_flags;  in do_statfs64()
185 	if (copy_to_user(p, &buf, sizeof(buf)))  in do_statfs64()
190 SYSCALL_DEFINE2(statfs, const char __user *, pathname, struct statfs __user *, buf)  in SYSCALL_DEFINE2()  argument
195 		error = do_statfs_native(&st, buf);  in SYSCALL_DEFINE2()
199 SYSCALL_DEFINE3(statfs64, const char __user *, pathname, size_t, sz, struct statfs64 __user *, buf)  in SYSCALL_DEFINE3()  argument
203 	if (sz != sizeof(*buf))  in SYSCALL_DEFINE3()
207 		error = do_statfs64(&st, buf);  in SYSCALL_DEFINE3()
211 SYSCALL_DEFINE2(fstatfs, unsigned int, fd, struct statfs __user *, buf)  in SYSCALL_DEFINE2()  argument
216 		error = do_statfs_native(&st, buf);  in SYSCALL_DEFINE2()
220 SYSCALL_DEFINE3(fstatfs64, unsigned int, fd, size_t, sz, struct statfs64 __user *, buf)  in SYSCALL_DEFINE3()  argument
225 	if (sz != sizeof(*buf))  in SYSCALL_DEFINE3()
230 		error = do_statfs64(&st, buf);  in SYSCALL_DEFINE3()
267 	struct compat_statfs buf;  in put_compat_statfs()  local
281 	memset(&buf, 0, sizeof(struct compat_statfs));  in put_compat_statfs()
282 	buf.f_type = kbuf->f_type;  in put_compat_statfs()
283 	buf.f_bsize = kbuf->f_bsize;  in put_compat_statfs()
284 	buf.f_blocks = kbuf->f_blocks;  in put_compat_statfs()
285 	buf.f_bfree = kbuf->f_bfree;  in put_compat_statfs()
286 	buf.f_bavail = kbuf->f_bavail;  in put_compat_statfs()
287 	buf.f_files = kbuf->f_files;  in put_compat_statfs()
288 	buf.f_ffree = kbuf->f_ffree;  in put_compat_statfs()
289 	buf.f_namelen = kbuf->f_namelen;  in put_compat_statfs()
290 	buf.f_fsid.val[0] = kbuf->f_fsid.val[0];  in put_compat_statfs()
291 	buf.f_fsid.val[1] = kbuf->f_fsid.val[1];  in put_compat_statfs()
292 	buf.f_frsize = kbuf->f_frsize;  in put_compat_statfs()
293 	buf.f_flags = kbuf->f_flags;  in put_compat_statfs()
294 	if (copy_to_user(ubuf, &buf, sizeof(struct compat_statfs)))  in put_compat_statfs()
303 COMPAT_SYSCALL_DEFINE2(statfs, const char __user *, pathname, struct compat_statfs __user *, buf)  in COMPAT_SYSCALL_DEFINE2()  argument
308 		error = put_compat_statfs(buf, &tmp);  in COMPAT_SYSCALL_DEFINE2()
312 COMPAT_SYSCALL_DEFINE2(fstatfs, unsigned int, fd, struct compat_statfs __user *, buf)  in COMPAT_SYSCALL_DEFINE2()  argument
317 		error = put_compat_statfs(buf, &tmp);  in COMPAT_SYSCALL_DEFINE2()
323 	struct compat_statfs64 buf;  in put_compat_statfs64()  local
328 	memset(&buf, 0, sizeof(struct compat_statfs64));  in put_compat_statfs64()
329 	buf.f_type = kbuf->f_type;  in put_compat_statfs64()
330 	buf.f_bsize = kbuf->f_bsize;  in put_compat_statfs64()
331 	buf.f_blocks = kbuf->f_blocks;  in put_compat_statfs64()
332 	buf.f_bfree = kbuf->f_bfree;  in put_compat_statfs64()
333 	buf.f_bavail = kbuf->f_bavail;  in put_compat_statfs64()
334 	buf.f_files = kbuf->f_files;  in put_compat_statfs64()
335 	buf.f_ffree = kbuf->f_ffree;  in put_compat_statfs64()
336 	buf.f_namelen = kbuf->f_namelen;  in put_compat_statfs64()
337 	buf.f_fsid.val[0] = kbuf->f_fsid.val[0];  in put_compat_statfs64()
338 	buf.f_fsid.val[1] = kbuf->f_fsid.val[1];  in put_compat_statfs64()
339 	buf.f_frsize = kbuf->f_frsize;  in put_compat_statfs64()
340 	buf.f_flags = kbuf->f_flags;  in put_compat_statfs64()
341 	if (copy_to_user(ubuf, &buf, sizeof(struct compat_statfs64)))  in put_compat_statfs64()
346 …t_sys_statfs64(const char __user * pathname, compat_size_t sz, struct compat_statfs64 __user * buf)  in kcompat_sys_statfs64()  argument
351 	if (sz != sizeof(*buf))  in kcompat_sys_statfs64()
356 		error = put_compat_statfs64(buf, &tmp);  in kcompat_sys_statfs64()
360 …3(statfs64, const char __user *, pathname, compat_size_t, sz, struct compat_statfs64 __user *, buf)  in COMPAT_SYSCALL_DEFINE3()  argument
362 	return kcompat_sys_statfs64(pathname, sz, buf);  in COMPAT_SYSCALL_DEFINE3()
365 int kcompat_sys_fstatfs64(unsigned int fd, compat_size_t sz, struct compat_statfs64 __user * buf)  in kcompat_sys_fstatfs64()  argument
370 	if (sz != sizeof(*buf))  in kcompat_sys_fstatfs64()
375 		error = put_compat_statfs64(buf, &tmp);  in kcompat_sys_fstatfs64()
379 …SCALL_DEFINE3(fstatfs64, unsigned int, fd, compat_size_t, sz, struct compat_statfs64 __user *, buf)  in COMPAT_SYSCALL_DEFINE3()  argument
381 	return kcompat_sys_fstatfs64(fd, sz, buf);  in COMPAT_SYSCALL_DEFINE3()