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 1.15 2004/11/12 00:09:18 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/vnode.h>
45 #include <sys/device.h>
46 #include <sys/file2.h>
47 #include <sys/kern_syscall.h>
49 #include <arch_linux/linux.h>
50 #include <arch_linux/linux_proto.h>
51 #include "linux_util.h"
54 newstat_copyout(struct stat *buf, void *ubuf)
56 struct l_newstat tbuf;
60 tbuf.st_dev = uminor(buf->st_dev) | (umajor(buf->st_dev) << 8);
61 tbuf.st_ino = buf->st_ino;
62 tbuf.st_mode = buf->st_mode;
63 tbuf.st_nlink = buf->st_nlink;
64 tbuf.st_uid = buf->st_uid;
65 tbuf.st_gid = buf->st_gid;
66 tbuf.st_rdev = buf->st_rdev;
67 tbuf.st_size = buf->st_size;
68 tbuf.st_atime = buf->st_atime;
69 tbuf.st_mtime = buf->st_mtime;
70 tbuf.st_ctime = buf->st_ctime;
71 tbuf.st_blksize = buf->st_blksize;
72 tbuf.st_blocks = buf->st_blocks;
74 /* Lie about disk drives which are character devices
75 * in FreeBSD but block devices under Linux.
77 if (S_ISCHR(tbuf.st_mode) &&
78 (dev = udev2dev(buf->st_rdev, 0)) != NODEV) {
79 if (dev_is_good(dev) && (dev_dflags(dev) & D_DISK)) {
80 tbuf.st_mode &= ~S_IFMT;
81 tbuf.st_mode |= S_IFBLK;
83 /* XXX this may not be quite right */
84 /* Map major number to 0 */
85 tbuf.st_dev = uminor(buf->st_dev) & 0xf;
86 tbuf.st_rdev = buf->st_rdev & 0xff;
90 error = copyout(&tbuf, ubuf, sizeof(tbuf));
95 linux_newstat(struct linux_newstat_args *args)
98 struct nlookupdata nd;
102 error = linux_copyin_path(args->path, &path, LINUX_PATH_EXISTS);
107 printf(ARGS(newstat, "%s, *"), path);
109 error = nlookup_init(&nd, path, UIO_SYSSPACE, NLC_FOLLOW);
111 error = kern_stat(&nd, &buf);
113 error = newstat_copyout(&buf, args->buf);
116 linux_free_path(&path);
121 linux_newlstat(struct linux_newlstat_args *args)
124 struct nlookupdata nd;
128 error = linux_copyin_path(args->path, &path, LINUX_PATH_EXISTS);
132 if (ldebug(newlstat))
133 printf(ARGS(newlstat, "%s, *"), path);
135 error = nlookup_init(&nd, path, UIO_SYSSPACE, 0);
137 error = kern_stat(&nd, &sb);
139 error = newstat_copyout(&sb, args->buf);
142 linux_free_path(&path);
147 linux_newfstat(struct linux_newfstat_args *args)
153 if (ldebug(newfstat))
154 printf(ARGS(newfstat, "%d, *"), args->fd);
156 error = kern_fstat(args->fd, &buf);
159 error = newstat_copyout(&buf, args->buf);
163 /* XXX - All fields of type l_int are defined as l_long on i386 */
177 #define LINUX_CODA_SUPER_MAGIC 0x73757245L
178 #define LINUX_EXT2_SUPER_MAGIC 0xEF53L
179 #define LINUX_HPFS_SUPER_MAGIC 0xf995e849L
180 #define LINUX_ISOFS_SUPER_MAGIC 0x9660L
181 #define LINUX_MSDOS_SUPER_MAGIC 0x4d44L
182 #define LINUX_NCP_SUPER_MAGIC 0x564cL
183 #define LINUX_NFS_SUPER_MAGIC 0x6969L
184 #define LINUX_NTFS_SUPER_MAGIC 0x5346544EL
185 #define LINUX_PROC_SUPER_MAGIC 0x9fa0L
186 #define LINUX_UFS_SUPER_MAGIC 0x00011954L /* XXX - UFS_MAGIC in Linux */
189 bsd_to_linux_ftype(const char *fstypename)
192 static struct {const char *bsd_name; long linux_type;} b2l_tbl[] = {
193 {"ufs", LINUX_UFS_SUPER_MAGIC},
194 {"cd9660", LINUX_ISOFS_SUPER_MAGIC},
195 {"nfs", LINUX_NFS_SUPER_MAGIC},
196 {"ext2fs", LINUX_EXT2_SUPER_MAGIC},
197 {"procfs", LINUX_PROC_SUPER_MAGIC},
198 {"msdosfs", LINUX_MSDOS_SUPER_MAGIC},
199 {"ntfs", LINUX_NTFS_SUPER_MAGIC},
200 {"nwfs", LINUX_NCP_SUPER_MAGIC},
201 {"hpfs", LINUX_HPFS_SUPER_MAGIC},
202 {"coda", LINUX_CODA_SUPER_MAGIC},
205 for (i = 0; b2l_tbl[i].bsd_name != NULL; i++)
206 if (strcmp(b2l_tbl[i].bsd_name, fstypename) == 0)
207 return (b2l_tbl[i].linux_type);
213 statfs_copyout(struct statfs *statfs, struct l_statfs_buf *buf)
215 struct l_statfs linux_statfs;
218 linux_statfs.f_type = bsd_to_linux_ftype(statfs->f_fstypename);
219 linux_statfs.f_bsize = statfs->f_bsize;
220 linux_statfs.f_blocks = statfs->f_blocks;
221 linux_statfs.f_bfree = statfs->f_bfree;
222 linux_statfs.f_bavail = statfs->f_bavail;
223 linux_statfs.f_ffree = statfs->f_ffree;
224 linux_statfs.f_files = statfs->f_files;
225 linux_statfs.f_fsid.val[0] = statfs->f_fsid.val[0];
226 linux_statfs.f_fsid.val[1] = statfs->f_fsid.val[1];
227 linux_statfs.f_namelen = MAXNAMLEN; /* Bogus */
229 error = copyout(&linux_statfs, buf, sizeof(linux_statfs));
234 linux_statfs(struct linux_statfs_args *args)
236 struct statfs statfs;
237 struct nlookupdata nd;
241 error = linux_copyin_path(args->path, &path, LINUX_PATH_EXISTS);
246 printf(ARGS(statfs, "%s, *"), path);
248 error = nlookup_init(&nd, path, UIO_SYSSPACE, NLC_FOLLOW);
250 error = kern_statfs(&nd, &statfs);
253 error = statfs_copyout(&statfs, args->buf);
254 linux_free_path(&path);
259 linux_fstatfs(struct linux_fstatfs_args *args)
261 struct statfs statfs;
266 printf(ARGS(fstatfs, "%d, *"), args->fd);
268 error = kern_fstatfs(args->fd, &statfs);
271 error = statfs_copyout(&statfs, args->buf);
284 linux_ustat(struct linux_ustat_args *args)
286 struct thread *td = curthread;
295 printf(ARGS(ustat, "%d, *"), args->dev);
299 * lu.f_fname and lu.f_fpack are not used. They are always zeroed.
300 * lu.f_tinode and lu.f_tfree are set from the device's super block.
302 bzero(&lu, sizeof(lu));
305 * XXX - Don't return an error if we can't find a vnode for the
306 * device. Our dev_t is 32-bits whereas Linux only has a 16-bits
307 * dev_t. The dev_t that is used now may as well be a truncated
308 * dev_t returned from previous syscalls. Just return a bzeroed
309 * ustat in that case.
311 dev = udev2dev(makeudev(args->dev >> 8, args->dev & 0xFF), 0);
312 if (dev != NODEV && vfinddev(dev, VCHR, &vp)) {
313 if (vp->v_mount == NULL) {
316 stat = &(vp->v_mount->mnt_stat);
317 error = VFS_STATFS(vp->v_mount, stat, td);
321 lu.f_tfree = stat->f_bfree;
322 lu.f_tinode = stat->f_ffree;
324 return (copyout(&lu, args->ubuf, sizeof(lu)));
327 #if defined(__i386__)
330 stat64_copyout(struct stat *buf, void *ubuf)
332 struct l_stat64 lbuf;
335 bzero(&lbuf, sizeof(lbuf));
336 lbuf.st_dev = uminor(buf->st_dev) | (umajor(buf->st_dev) << 8);
337 lbuf.st_ino = buf->st_ino;
338 lbuf.st_mode = buf->st_mode;
339 lbuf.st_nlink = buf->st_nlink;
340 lbuf.st_uid = buf->st_uid;
341 lbuf.st_gid = buf->st_gid;
342 lbuf.st_rdev = buf->st_rdev;
343 lbuf.st_size = buf->st_size;
344 lbuf.st_atime = buf->st_atime;
345 lbuf.st_mtime = buf->st_mtime;
346 lbuf.st_ctime = buf->st_ctime;
347 lbuf.st_blksize = buf->st_blksize;
348 lbuf.st_blocks = buf->st_blocks;
351 * The __st_ino field makes all the difference. In the Linux kernel
352 * it is conditionally compiled based on STAT64_HAS_BROKEN_ST_INO,
353 * but without the assignment to __st_ino the runtime linker refuses
354 * to mmap(2) any shared libraries. I guess it's broken alright :-)
356 lbuf.__st_ino = buf->st_ino;
358 error = copyout(&lbuf, ubuf, sizeof(lbuf));
363 linux_stat64(struct linux_stat64_args *args)
365 struct nlookupdata nd;
370 error = linux_copyin_path(args->filename, &path, LINUX_PATH_EXISTS);
375 printf(ARGS(stat64, "%s, *"), path);
377 error = nlookup_init(&nd, path, UIO_SYSSPACE, NLC_FOLLOW);
379 error = kern_stat(&nd, &buf);
381 error = stat64_copyout(&buf, args->statbuf);
384 linux_free_path(&path);
389 linux_lstat64(struct linux_lstat64_args *args)
391 struct nlookupdata nd;
396 error = linux_copyin_path(args->filename, &path, LINUX_PATH_EXISTS);
401 printf(ARGS(lstat64, "%s, *"), path);
403 error = nlookup_init(&nd, path, UIO_SYSSPACE, 0);
405 error = kern_stat(&nd, &sb);
407 error = stat64_copyout(&sb, args->statbuf);
410 linux_free_path(&path);
415 linux_fstat64(struct linux_fstat64_args *args)
422 printf(ARGS(fstat64, "%d, *"), args->fd);
424 error = kern_fstat(args->fd, &buf);
427 error = stat64_copyout(&buf, args->statbuf);
431 #endif /* __i386__ */