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 without 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>
48 #include <emulation/43bsd/stat.h>
50 #include <sys/file2.h>
51 #include <sys/mplock2.h>
53 #include <arch_linux/linux.h>
54 #include <arch_linux/linux_proto.h>
55 #include "linux_util.h"
58 newstat_copyout(struct stat *buf, void *ubuf)
60 struct l_newstat tbuf;
63 bzero(&tbuf, sizeof(tbuf));
64 tbuf.st_dev = uminor(buf->st_dev) | (umajor(buf->st_dev) << 8);
65 tbuf.st_ino = INO64TO32(buf->st_ino);
66 tbuf.st_mode = buf->st_mode;
67 tbuf.st_nlink = buf->st_nlink;
68 tbuf.st_uid = buf->st_uid;
69 tbuf.st_gid = buf->st_gid;
70 tbuf.st_rdev = buf->st_rdev;
71 tbuf.st_size = buf->st_size;
72 tbuf.st_atime = buf->st_atime;
73 tbuf.st_mtime = buf->st_mtime;
74 tbuf.st_ctime = buf->st_ctime;
75 tbuf.st_blksize = buf->st_blksize;
76 tbuf.st_blocks = buf->st_blocks;
78 error = copyout(&tbuf, ubuf, sizeof(tbuf));
83 ostat_copyout(struct stat *st, struct ostat *uaddr)
88 ost.st_dev = st->st_dev;
89 ost.st_ino = st->st_ino;
90 ost.st_mode = st->st_mode;
91 ost.st_nlink = st->st_nlink;
92 ost.st_uid = st->st_uid;
93 ost.st_gid = st->st_gid;
94 ost.st_rdev = st->st_rdev;
95 if (st->st_size < (quad_t)1 << 32)
96 ost.st_size = st->st_size;
99 ost.st_atime = st->st_atime;
100 ost.st_mtime = st->st_mtime;
101 ost.st_ctime = st->st_ctime;
102 ost.st_blksize = st->st_blksize;
103 ost.st_blocks = st->st_blocks;
104 ost.st_flags = st->st_flags;
105 ost.st_gen = st->st_gen;
107 error = copyout(&ost, uaddr, sizeof(ost));
115 sys_linux_newstat(struct linux_newstat_args *args)
118 struct nlookupdata nd;
122 error = linux_copyin_path(args->path, &path, LINUX_PATH_EXISTS);
127 kprintf(ARGS(newstat, "%s, *"), path);
130 error = nlookup_init(&nd, path, UIO_SYSSPACE, NLC_FOLLOW);
132 error = kern_stat(&nd, &buf);
134 error = newstat_copyout(&buf, args->buf);
138 linux_free_path(&path);
146 sys_linux_newlstat(struct linux_newlstat_args *args)
149 struct nlookupdata nd;
153 error = linux_copyin_path(args->path, &path, LINUX_PATH_EXISTS);
157 if (ldebug(newlstat))
158 kprintf(ARGS(newlstat, "%s, *"), path);
161 error = nlookup_init(&nd, path, UIO_SYSSPACE, 0);
163 error = kern_stat(&nd, &sb);
165 error = newstat_copyout(&sb, args->buf);
169 linux_free_path(&path);
177 sys_linux_newfstat(struct linux_newfstat_args *args)
183 if (ldebug(newfstat))
184 kprintf(ARGS(newfstat, "%d, *"), args->fd);
187 error = kern_fstat(args->fd, &buf);
191 error = newstat_copyout(&buf, args->buf);
195 /* XXX - All fields of type l_int are defined as l_long on i386 */
209 #define LINUX_CODA_SUPER_MAGIC 0x73757245L
210 #define LINUX_EXT2_SUPER_MAGIC 0xEF53L
211 #define LINUX_HPFS_SUPER_MAGIC 0xf995e849L
212 #define LINUX_ISOFS_SUPER_MAGIC 0x9660L
213 #define LINUX_MSDOS_SUPER_MAGIC 0x4d44L
214 #define LINUX_NCP_SUPER_MAGIC 0x564cL
215 #define LINUX_NFS_SUPER_MAGIC 0x6969L
216 #define LINUX_NTFS_SUPER_MAGIC 0x5346544EL
217 #define LINUX_PROC_SUPER_MAGIC 0x9fa0L
218 #define LINUX_UFS_SUPER_MAGIC 0x00011954L /* XXX - UFS_MAGIC in Linux */
221 bsd_to_linux_ftype(const char *fstypename)
224 static struct {const char *bsd_name; long linux_type;} b2l_tbl[] = {
225 {"ufs", LINUX_UFS_SUPER_MAGIC},
226 {"cd9660", LINUX_ISOFS_SUPER_MAGIC},
227 {"nfs", LINUX_NFS_SUPER_MAGIC},
228 {"ext2fs", LINUX_EXT2_SUPER_MAGIC},
229 {"procfs", LINUX_PROC_SUPER_MAGIC},
230 {"msdosfs", LINUX_MSDOS_SUPER_MAGIC},
231 {"ntfs", LINUX_NTFS_SUPER_MAGIC},
232 {"nwfs", LINUX_NCP_SUPER_MAGIC},
233 {"hpfs", LINUX_HPFS_SUPER_MAGIC},
236 for (i = 0; b2l_tbl[i].bsd_name != NULL; i++)
237 if (strcmp(b2l_tbl[i].bsd_name, fstypename) == 0)
238 return (b2l_tbl[i].linux_type);
244 statfs_copyout(struct statfs *statfs, struct l_statfs_buf *buf, l_int namelen)
246 struct l_statfs linux_statfs;
249 linux_statfs.f_type = bsd_to_linux_ftype(statfs->f_fstypename);
250 linux_statfs.f_bsize = statfs->f_bsize;
251 linux_statfs.f_blocks = statfs->f_blocks;
252 linux_statfs.f_bfree = statfs->f_bfree;
253 linux_statfs.f_bavail = statfs->f_bavail;
254 linux_statfs.f_ffree = statfs->f_ffree;
255 linux_statfs.f_files = statfs->f_files;
256 linux_statfs.f_fsid.val[0] = statfs->f_fsid.val[0];
257 linux_statfs.f_fsid.val[1] = statfs->f_fsid.val[1];
258 linux_statfs.f_namelen = namelen;
260 error = copyout(&linux_statfs, buf, sizeof(linux_statfs));
268 sys_linux_statfs(struct linux_statfs_args *args)
270 struct statfs statfs;
271 struct nlookupdata nd;
275 error = linux_copyin_path(args->path, &path, LINUX_PATH_EXISTS);
280 kprintf(ARGS(statfs, "%s, *"), path);
283 error = nlookup_init(&nd, path, UIO_SYSSPACE, NLC_FOLLOW);
285 error = kern_statfs(&nd, &statfs);
287 if (nd.nl_nch.ncp->nc_vp != NULL)
288 error = vn_get_namelen(nd.nl_nch.ncp->nc_vp, &namelen);
295 error = statfs_copyout(&statfs, args->buf, (l_int)namelen);
296 linux_free_path(&path);
304 sys_linux_fstatfs(struct linux_fstatfs_args *args)
306 struct proc *p = curthread->td_proc;
308 struct statfs statfs;
313 kprintf(ARGS(fstatfs, "%d, *"), args->fd);
316 if ((error = kern_fstatfs(args->fd, &statfs)) != 0)
318 if ((error = holdvnode(p->p_fd, args->fd, &fp)) != 0)
320 error = vn_get_namelen((struct vnode *)fp->f_data, &namelen);
324 error = statfs_copyout(&statfs, args->buf, (l_int)namelen);
340 sys_linux_ustat(struct linux_ustat_args *args)
342 struct thread *td = curthread;
351 kprintf(ARGS(ustat, "%d, *"), args->dev);
355 * lu.f_fname and lu.f_fpack are not used. They are always zeroed.
356 * lu.f_tinode and lu.f_tfree are set from the device's super block.
358 bzero(&lu, sizeof(lu));
361 * XXX - Don't return an error if we can't find a vnode for the
362 * device. Our cdev_t is 32-bits whereas Linux only has a 16-bits
363 * cdev_t. The dev_t that is used now may as well be a truncated
364 * cdev_t returned from previous syscalls. Just return a bzeroed
365 * ustat in that case.
368 dev = udev2dev(makeudev(args->dev >> 8, args->dev & 0xFF), 0);
369 if (dev != NULL && vfinddev(dev, VCHR, &vp)) {
370 if (vp->v_mount == NULL) {
375 stat = &(vp->v_mount->mnt_stat);
376 error = VFS_STATFS(vp->v_mount, stat, td->td_ucred);
379 lu.f_tfree = stat->f_bfree;
380 lu.f_tinode = stat->f_ffree;
388 error = copyout(&lu, args->ubuf, sizeof(lu));
392 #if defined(__i386__)
395 stat64_copyout(struct stat *buf, void *ubuf)
397 struct l_stat64 lbuf;
400 bzero(&lbuf, sizeof(lbuf));
401 lbuf.st_dev = uminor(buf->st_dev) | (umajor(buf->st_dev) << 8);
402 lbuf.st_ino = INO64TO32(buf->st_ino);
403 lbuf.st_mode = buf->st_mode;
404 lbuf.st_nlink = buf->st_nlink;
405 lbuf.st_uid = buf->st_uid;
406 lbuf.st_gid = buf->st_gid;
407 lbuf.st_rdev = buf->st_rdev;
408 lbuf.st_size = buf->st_size;
409 lbuf.st_atime = buf->st_atime;
410 lbuf.st_mtime = buf->st_mtime;
411 lbuf.st_ctime = buf->st_ctime;
412 lbuf.st_blksize = buf->st_blksize;
413 lbuf.st_blocks = buf->st_blocks;
416 * The __st_ino field makes all the difference. In the Linux kernel
417 * it is conditionally compiled based on STAT64_HAS_BROKEN_ST_INO,
418 * but without the assignment to __st_ino the runtime linker refuses
419 * to mmap(2) any shared libraries. I guess it's broken alright :-)
421 lbuf.__st_ino = INO64TO32(buf->st_ino);
423 error = copyout(&lbuf, ubuf, sizeof(lbuf));
431 sys_linux_stat64(struct linux_stat64_args *args)
433 struct nlookupdata nd;
438 error = linux_copyin_path(args->filename, &path, LINUX_PATH_EXISTS);
443 kprintf(ARGS(stat64, "%s, *"), path);
446 error = nlookup_init(&nd, path, UIO_SYSSPACE, NLC_FOLLOW);
448 error = kern_stat(&nd, &buf);
453 error = stat64_copyout(&buf, args->statbuf);
454 linux_free_path(&path);
462 sys_linux_lstat64(struct linux_lstat64_args *args)
464 struct nlookupdata nd;
469 error = linux_copyin_path(args->filename, &path, LINUX_PATH_EXISTS);
474 kprintf(ARGS(lstat64, "%s, *"), path);
477 error = nlookup_init(&nd, path, UIO_SYSSPACE, 0);
479 error = kern_stat(&nd, &sb);
484 error = stat64_copyout(&sb, args->statbuf);
485 linux_free_path(&path);
493 sys_linux_fstat64(struct linux_fstat64_args *args)
500 kprintf(ARGS(fstat64, "%d, *"), args->fd);
503 error = kern_fstat(args->fd, &buf);
507 error = stat64_copyout(&buf, args->statbuf);
512 sys_linux_fstatat64(struct linux_fstatat64_args *args)
514 struct nlookupdata nd;
518 int error, flags, dfd;
520 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW)
523 error = linux_copyin_path(args->path, &path, LINUX_PATH_EXISTS);
527 if (ldebug(fstatat64))
528 kprintf(ARGS(fstatat64, "%s"), path);
530 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
531 flags = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) ? 0 : NLC_FOLLOW;
533 error = nlookup_init_at(&nd, &fp, dfd, path, UIO_SYSSPACE, flags);
535 error = kern_stat(&nd, &st);
537 error = stat64_copyout(&st, args->statbuf);
539 nlookup_done_at(&nd, fp);
540 linux_free_path(&path);
545 sys_linux_ostat(struct linux_ostat_args *args)
547 struct nlookupdata nd;
552 error = linux_copyin_path(args->path, &path, LINUX_PATH_EXISTS);
557 kprintf(ARGS(ostat, "%s, *"), path);
560 error = nlookup_init(&nd, path, UIO_SYSSPACE, NLC_FOLLOW);
562 error = kern_stat(&nd, &buf);
567 error = ostat_copyout(&buf, args->statbuf);
568 linux_free_path(&path);
572 #endif /* __i386__ */