2 * Copyright (c) 1994-1995 Søren Schmidt
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer
10 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software withough specific prior written permission
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * $FreeBSD: src/sys/compat/linux/linux_stats.c,v 1.22.2.3 2001/11/05 19:08:23 marcel Exp $
29 * $DragonFly: src/sys/emulation/linux/linux_stats.c,v 1.27 2008/09/28 05:08:16 dillon Exp $
32 #include <sys/param.h>
33 #include <sys/systm.h>
35 #include <sys/dirent.h>
37 #include <sys/filedesc.h>
39 #include <sys/mount.h>
40 #include <sys/nlookup.h>
42 #include <sys/sysctl.h>
43 #include <sys/systm.h>
44 #include <sys/unistd.h>
45 #include <sys/vnode.h>
46 #include <sys/device.h>
47 #include <sys/kern_syscall.h>
49 #include <sys/file2.h>
50 #include <sys/mplock2.h>
52 #include <arch_linux/linux.h>
53 #include <arch_linux/linux_proto.h>
54 #include "linux_util.h"
57 newstat_copyout(struct stat
*buf
, void *ubuf
)
59 struct l_newstat tbuf
;
63 tbuf
.st_dev
= uminor(buf
->st_dev
) | (umajor(buf
->st_dev
) << 8);
64 tbuf
.st_ino
= INO64TO32(buf
->st_ino
);
65 tbuf
.st_mode
= buf
->st_mode
;
66 tbuf
.st_nlink
= buf
->st_nlink
;
67 tbuf
.st_uid
= buf
->st_uid
;
68 tbuf
.st_gid
= buf
->st_gid
;
69 tbuf
.st_rdev
= buf
->st_rdev
;
70 tbuf
.st_size
= buf
->st_size
;
71 tbuf
.st_atime
= buf
->st_atime
;
72 tbuf
.st_mtime
= buf
->st_mtime
;
73 tbuf
.st_ctime
= buf
->st_ctime
;
74 tbuf
.st_blksize
= buf
->st_blksize
;
75 tbuf
.st_blocks
= buf
->st_blocks
;
77 /* Lie about disk drives which are character devices
78 * in FreeBSD but block devices under Linux.
80 if (S_ISCHR(tbuf
.st_mode
) &&
81 (dev
= udev2dev(buf
->st_rdev
, 0)) != NULL
) {
82 if (dev_is_good(dev
) && (dev_dflags(dev
) & D_DISK
)) {
83 tbuf
.st_mode
&= ~S_IFMT
;
84 tbuf
.st_mode
|= S_IFBLK
;
86 /* XXX this may not be quite right */
87 /* Map major number to 0 */
88 tbuf
.st_dev
= uminor(buf
->st_dev
) & 0xf;
89 tbuf
.st_rdev
= buf
->st_rdev
& 0xff;
93 error
= copyout(&tbuf
, ubuf
, sizeof(tbuf
));
101 sys_linux_newstat(struct linux_newstat_args
*args
)
104 struct nlookupdata nd
;
108 error
= linux_copyin_path(args
->path
, &path
, LINUX_PATH_EXISTS
);
113 kprintf(ARGS(newstat
, "%s, *"), path
);
116 error
= nlookup_init(&nd
, path
, UIO_SYSSPACE
, NLC_FOLLOW
);
118 error
= kern_stat(&nd
, &buf
);
120 error
= newstat_copyout(&buf
, args
->buf
);
124 linux_free_path(&path
);
132 sys_linux_newlstat(struct linux_newlstat_args
*args
)
135 struct nlookupdata nd
;
139 error
= linux_copyin_path(args
->path
, &path
, LINUX_PATH_EXISTS
);
143 if (ldebug(newlstat
))
144 kprintf(ARGS(newlstat
, "%s, *"), path
);
147 error
= nlookup_init(&nd
, path
, UIO_SYSSPACE
, 0);
149 error
= kern_stat(&nd
, &sb
);
151 error
= newstat_copyout(&sb
, args
->buf
);
155 linux_free_path(&path
);
163 sys_linux_newfstat(struct linux_newfstat_args
*args
)
169 if (ldebug(newfstat
))
170 kprintf(ARGS(newfstat
, "%d, *"), args
->fd
);
173 error
= kern_fstat(args
->fd
, &buf
);
177 error
= newstat_copyout(&buf
, args
->buf
);
181 /* XXX - All fields of type l_int are defined as l_long on i386 */
195 #define LINUX_CODA_SUPER_MAGIC 0x73757245L
196 #define LINUX_EXT2_SUPER_MAGIC 0xEF53L
197 #define LINUX_HPFS_SUPER_MAGIC 0xf995e849L
198 #define LINUX_ISOFS_SUPER_MAGIC 0x9660L
199 #define LINUX_MSDOS_SUPER_MAGIC 0x4d44L
200 #define LINUX_NCP_SUPER_MAGIC 0x564cL
201 #define LINUX_NFS_SUPER_MAGIC 0x6969L
202 #define LINUX_NTFS_SUPER_MAGIC 0x5346544EL
203 #define LINUX_PROC_SUPER_MAGIC 0x9fa0L
204 #define LINUX_UFS_SUPER_MAGIC 0x00011954L /* XXX - UFS_MAGIC in Linux */
207 bsd_to_linux_ftype(const char *fstypename
)
210 static struct {const char *bsd_name
; long linux_type
;} b2l_tbl
[] = {
211 {"ufs", LINUX_UFS_SUPER_MAGIC
},
212 {"cd9660", LINUX_ISOFS_SUPER_MAGIC
},
213 {"nfs", LINUX_NFS_SUPER_MAGIC
},
214 {"ext2fs", LINUX_EXT2_SUPER_MAGIC
},
215 {"procfs", LINUX_PROC_SUPER_MAGIC
},
216 {"msdosfs", LINUX_MSDOS_SUPER_MAGIC
},
217 {"ntfs", LINUX_NTFS_SUPER_MAGIC
},
218 {"nwfs", LINUX_NCP_SUPER_MAGIC
},
219 {"hpfs", LINUX_HPFS_SUPER_MAGIC
},
222 for (i
= 0; b2l_tbl
[i
].bsd_name
!= NULL
; i
++)
223 if (strcmp(b2l_tbl
[i
].bsd_name
, fstypename
) == 0)
224 return (b2l_tbl
[i
].linux_type
);
230 statfs_copyout(struct statfs
*statfs
, struct l_statfs_buf
*buf
, l_int namelen
)
232 struct l_statfs linux_statfs
;
235 linux_statfs
.f_type
= bsd_to_linux_ftype(statfs
->f_fstypename
);
236 linux_statfs
.f_bsize
= statfs
->f_bsize
;
237 linux_statfs
.f_blocks
= statfs
->f_blocks
;
238 linux_statfs
.f_bfree
= statfs
->f_bfree
;
239 linux_statfs
.f_bavail
= statfs
->f_bavail
;
240 linux_statfs
.f_ffree
= statfs
->f_ffree
;
241 linux_statfs
.f_files
= statfs
->f_files
;
242 linux_statfs
.f_fsid
.val
[0] = statfs
->f_fsid
.val
[0];
243 linux_statfs
.f_fsid
.val
[1] = statfs
->f_fsid
.val
[1];
244 linux_statfs
.f_namelen
= namelen
;
246 error
= copyout(&linux_statfs
, buf
, sizeof(linux_statfs
));
254 sys_linux_statfs(struct linux_statfs_args
*args
)
256 struct statfs statfs
;
257 struct nlookupdata nd
;
261 error
= linux_copyin_path(args
->path
, &path
, LINUX_PATH_EXISTS
);
266 kprintf(ARGS(statfs
, "%s, *"), path
);
269 error
= nlookup_init(&nd
, path
, UIO_SYSSPACE
, NLC_FOLLOW
);
271 error
= kern_statfs(&nd
, &statfs
);
273 if (nd
.nl_nch
.ncp
->nc_vp
!= NULL
)
274 error
= vn_get_namelen(nd
.nl_nch
.ncp
->nc_vp
, &namelen
);
281 error
= statfs_copyout(&statfs
, args
->buf
, (l_int
)namelen
);
282 linux_free_path(&path
);
290 sys_linux_fstatfs(struct linux_fstatfs_args
*args
)
292 struct proc
*p
= curthread
->td_proc
;
294 struct statfs statfs
;
299 kprintf(ARGS(fstatfs
, "%d, *"), args
->fd
);
302 if ((error
= kern_fstatfs(args
->fd
, &statfs
)) != 0)
304 if ((error
= holdvnode(p
->p_fd
, args
->fd
, &fp
)) != 0)
306 error
= vn_get_namelen((struct vnode
*)fp
->f_data
, &namelen
);
310 error
= statfs_copyout(&statfs
, args
->buf
, (l_int
)namelen
);
326 sys_linux_ustat(struct linux_ustat_args
*args
)
328 struct thread
*td
= curthread
;
337 kprintf(ARGS(ustat
, "%d, *"), args
->dev
);
341 * lu.f_fname and lu.f_fpack are not used. They are always zeroed.
342 * lu.f_tinode and lu.f_tfree are set from the device's super block.
344 bzero(&lu
, sizeof(lu
));
347 * XXX - Don't return an error if we can't find a vnode for the
348 * device. Our cdev_t is 32-bits whereas Linux only has a 16-bits
349 * cdev_t. The dev_t that is used now may as well be a truncated
350 * cdev_t returned from previous syscalls. Just return a bzeroed
351 * ustat in that case.
354 dev
= udev2dev(makeudev(args
->dev
>> 8, args
->dev
& 0xFF), 0);
355 if (dev
!= NULL
&& vfinddev(dev
, VCHR
, &vp
)) {
356 if (vp
->v_mount
== NULL
) {
361 stat
= &(vp
->v_mount
->mnt_stat
);
362 error
= VFS_STATFS(vp
->v_mount
, stat
, td
->td_ucred
);
365 lu
.f_tfree
= stat
->f_bfree
;
366 lu
.f_tinode
= stat
->f_ffree
;
374 error
= copyout(&lu
, args
->ubuf
, sizeof(lu
));
378 #if defined(__i386__)
381 stat64_copyout(struct stat
*buf
, void *ubuf
)
383 struct l_stat64 lbuf
;
386 bzero(&lbuf
, sizeof(lbuf
));
387 lbuf
.st_dev
= uminor(buf
->st_dev
) | (umajor(buf
->st_dev
) << 8);
388 lbuf
.st_ino
= buf
->st_ino
;
389 lbuf
.st_mode
= buf
->st_mode
;
390 lbuf
.st_nlink
= buf
->st_nlink
;
391 lbuf
.st_uid
= buf
->st_uid
;
392 lbuf
.st_gid
= buf
->st_gid
;
393 lbuf
.st_rdev
= buf
->st_rdev
;
394 lbuf
.st_size
= buf
->st_size
;
395 lbuf
.st_atime
= buf
->st_atime
;
396 lbuf
.st_mtime
= buf
->st_mtime
;
397 lbuf
.st_ctime
= buf
->st_ctime
;
398 lbuf
.st_blksize
= buf
->st_blksize
;
399 lbuf
.st_blocks
= buf
->st_blocks
;
402 * The __st_ino field makes all the difference. In the Linux kernel
403 * it is conditionally compiled based on STAT64_HAS_BROKEN_ST_INO,
404 * but without the assignment to __st_ino the runtime linker refuses
405 * to mmap(2) any shared libraries. I guess it's broken alright :-)
407 lbuf
.__st_ino
= INO64TO32(buf
->st_ino
);
409 error
= copyout(&lbuf
, ubuf
, sizeof(lbuf
));
417 sys_linux_stat64(struct linux_stat64_args
*args
)
419 struct nlookupdata nd
;
424 error
= linux_copyin_path(args
->filename
, &path
, LINUX_PATH_EXISTS
);
429 kprintf(ARGS(stat64
, "%s, *"), path
);
432 error
= nlookup_init(&nd
, path
, UIO_SYSSPACE
, NLC_FOLLOW
);
434 error
= kern_stat(&nd
, &buf
);
439 error
= stat64_copyout(&buf
, args
->statbuf
);
440 linux_free_path(&path
);
448 sys_linux_lstat64(struct linux_lstat64_args
*args
)
450 struct nlookupdata nd
;
455 error
= linux_copyin_path(args
->filename
, &path
, LINUX_PATH_EXISTS
);
460 kprintf(ARGS(lstat64
, "%s, *"), path
);
463 error
= nlookup_init(&nd
, path
, UIO_SYSSPACE
, 0);
465 error
= kern_stat(&nd
, &sb
);
470 error
= stat64_copyout(&sb
, args
->statbuf
);
471 linux_free_path(&path
);
479 sys_linux_fstat64(struct linux_fstat64_args
*args
)
486 kprintf(ARGS(fstat64
, "%d, *"), args
->fd
);
489 error
= kern_fstat(args
->fd
, &buf
);
493 error
= stat64_copyout(&buf
, args
->statbuf
);
497 #endif /* __i386__ */