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 1.3 2003/06/23 17:55:26 dillon Exp $
32 #include <sys/param.h>
34 #include <sys/dirent.h>
36 #include <sys/filedesc.h>
38 #include <sys/mount.h>
39 #include <sys/namei.h>
41 #include <sys/sysctl.h>
42 #include <sys/systm.h>
43 #include <sys/vnode.h>
45 #include <machine/../linux/linux.h>
46 #include <machine/../linux/linux_proto.h>
47 #include <compat/linux/linux_util.h>
50 newstat_copyout(struct stat *buf, void *ubuf)
52 struct l_newstat tbuf;
53 struct cdevsw *cdevsw;
56 tbuf.st_dev = uminor(buf->st_dev) | (umajor(buf->st_dev) << 8);
57 tbuf.st_ino = buf->st_ino;
58 tbuf.st_mode = buf->st_mode;
59 tbuf.st_nlink = buf->st_nlink;
60 tbuf.st_uid = buf->st_uid;
61 tbuf.st_gid = buf->st_gid;
62 tbuf.st_rdev = buf->st_rdev;
63 tbuf.st_size = buf->st_size;
64 tbuf.st_atime = buf->st_atime;
65 tbuf.st_mtime = buf->st_mtime;
66 tbuf.st_ctime = buf->st_ctime;
67 tbuf.st_blksize = buf->st_blksize;
68 tbuf.st_blocks = buf->st_blocks;
70 /* Lie about disk drives which are character devices
71 * in FreeBSD but block devices under Linux.
73 if (S_ISCHR(tbuf.st_mode) &&
74 (dev = udev2dev(buf->st_rdev, 0)) != NODEV) {
76 if (cdevsw != NULL && (cdevsw->d_flags & D_DISK)) {
77 tbuf.st_mode &= ~S_IFMT;
78 tbuf.st_mode |= S_IFBLK;
80 /* XXX this may not be quite right */
81 /* Map major number to 0 */
82 tbuf.st_dev = uminor(buf->st_dev) & 0xf;
83 tbuf.st_rdev = buf->st_rdev & 0xff;
87 return (copyout(&tbuf, ubuf, sizeof(tbuf)));
91 linux_newstat(struct linux_newstat_args *args)
93 struct proc *p = curproc;
100 CHECKALTEXIST(&sg, args->path);
104 printf(ARGS(newstat, "%s, *"), args->path);
107 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | NOOBJ, UIO_USERSPACE,
112 NDFREE(&nd, NDF_ONLY_PNBUF);
114 error = vn_stat(nd.ni_vp, &buf, p);
119 return (newstat_copyout(&buf, args->buf));
123 linux_newlstat(struct linux_newlstat_args *args)
125 struct proc *p = curproc;
131 sg = stackgap_init();
132 CHECKALTEXIST(&sg, args->path);
135 if (ldebug(newlstat))
136 printf(ARGS(newlstat, "%s, *"), args->path);
139 NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | NOOBJ, UIO_USERSPACE,
144 NDFREE(&nd, NDF_ONLY_PNBUF);
146 error = vn_stat(nd.ni_vp, &sb, p);
151 return (newstat_copyout(&sb, args->buf));
155 linux_newfstat(struct linux_newfstat_args *args)
157 struct proc *p = curproc;
158 struct filedesc *fdp;
164 if (ldebug(newfstat))
165 printf(ARGS(newfstat, "%d, *"), args->fd);
169 if ((unsigned)args->fd >= fdp->fd_nfiles ||
170 (fp = fdp->fd_ofiles[args->fd]) == NULL)
173 error = fo_stat(fp, &buf, p);
175 error = newstat_copyout(&buf, args->buf);
180 /* XXX - All fields of type l_int are defined as l_long on i386 */
194 #define LINUX_CODA_SUPER_MAGIC 0x73757245L
195 #define LINUX_EXT2_SUPER_MAGIC 0xEF53L
196 #define LINUX_HPFS_SUPER_MAGIC 0xf995e849L
197 #define LINUX_ISOFS_SUPER_MAGIC 0x9660L
198 #define LINUX_MSDOS_SUPER_MAGIC 0x4d44L
199 #define LINUX_NCP_SUPER_MAGIC 0x564cL
200 #define LINUX_NFS_SUPER_MAGIC 0x6969L
201 #define LINUX_NTFS_SUPER_MAGIC 0x5346544EL
202 #define LINUX_PROC_SUPER_MAGIC 0x9fa0L
203 #define LINUX_UFS_SUPER_MAGIC 0x00011954L /* XXX - UFS_MAGIC in Linux */
206 bsd_to_linux_ftype(const char *fstypename)
209 static struct {const char *bsd_name; long linux_type;} b2l_tbl[] = {
210 {"ufs", LINUX_UFS_SUPER_MAGIC},
211 {"cd9660", LINUX_ISOFS_SUPER_MAGIC},
212 {"nfs", LINUX_NFS_SUPER_MAGIC},
213 {"ext2fs", LINUX_EXT2_SUPER_MAGIC},
214 {"procfs", LINUX_PROC_SUPER_MAGIC},
215 {"msdosfs", LINUX_MSDOS_SUPER_MAGIC},
216 {"ntfs", LINUX_NTFS_SUPER_MAGIC},
217 {"nwfs", LINUX_NCP_SUPER_MAGIC},
218 {"hpfs", LINUX_HPFS_SUPER_MAGIC},
219 {"coda", LINUX_CODA_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 linux_statfs(struct linux_statfs_args *args)
232 struct proc *p = curproc;
234 struct nameidata *ndp;
235 struct statfs *bsd_statfs;
237 struct l_statfs linux_statfs;
241 sg = stackgap_init();
242 CHECKALTEXIST(&sg, args->path);
246 printf(ARGS(statfs, "%s, *"), args->path);
249 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->path, curproc);
253 NDFREE(ndp, NDF_ONLY_PNBUF);
254 mp = ndp->ni_vp->v_mount;
255 bsd_statfs = &mp->mnt_stat;
257 error = VFS_STATFS(mp, bsd_statfs, p);
260 bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
261 linux_statfs.f_type = bsd_to_linux_ftype(bsd_statfs->f_fstypename);
262 linux_statfs.f_bsize = bsd_statfs->f_bsize;
263 linux_statfs.f_blocks = bsd_statfs->f_blocks;
264 linux_statfs.f_bfree = bsd_statfs->f_bfree;
265 linux_statfs.f_bavail = bsd_statfs->f_bavail;
266 linux_statfs.f_ffree = bsd_statfs->f_ffree;
267 linux_statfs.f_files = bsd_statfs->f_files;
268 linux_statfs.f_fsid.val[0] = bsd_statfs->f_fsid.val[0];
269 linux_statfs.f_fsid.val[1] = bsd_statfs->f_fsid.val[1];
270 linux_statfs.f_namelen = MAXNAMLEN;
271 return copyout((caddr_t)&linux_statfs, (caddr_t)args->buf,
272 sizeof(linux_statfs));
276 linux_fstatfs(struct linux_fstatfs_args *args)
278 struct proc *p = curproc;
281 struct statfs *bsd_statfs;
282 struct l_statfs linux_statfs;
287 printf(ARGS(fstatfs, "%d, *"), args->fd);
289 error = getvnode(p->p_fd, args->fd, &fp);
292 mp = ((struct vnode *)fp->f_data)->v_mount;
293 bsd_statfs = &mp->mnt_stat;
294 error = VFS_STATFS(mp, bsd_statfs, p);
297 bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
298 linux_statfs.f_type = bsd_to_linux_ftype(bsd_statfs->f_fstypename);
299 linux_statfs.f_bsize = bsd_statfs->f_bsize;
300 linux_statfs.f_blocks = bsd_statfs->f_blocks;
301 linux_statfs.f_bfree = bsd_statfs->f_bfree;
302 linux_statfs.f_bavail = bsd_statfs->f_bavail;
303 linux_statfs.f_ffree = bsd_statfs->f_ffree;
304 linux_statfs.f_files = bsd_statfs->f_files;
305 linux_statfs.f_fsid.val[0] = bsd_statfs->f_fsid.val[0];
306 linux_statfs.f_fsid.val[1] = bsd_statfs->f_fsid.val[1];
307 linux_statfs.f_namelen = MAXNAMLEN;
308 return copyout((caddr_t)&linux_statfs, (caddr_t)args->buf,
309 sizeof(linux_statfs));
321 linux_ustat(struct linux_ustat_args *args)
323 struct proc *p = curproc;
332 printf(ARGS(ustat, "%d, *"), args->dev);
336 * lu.f_fname and lu.f_fpack are not used. They are always zeroed.
337 * lu.f_tinode and lu.f_tfree are set from the device's super block.
339 bzero(&lu, sizeof(lu));
342 * XXX - Don't return an error if we can't find a vnode for the
343 * device. Our dev_t is 32-bits whereas Linux only has a 16-bits
344 * dev_t. The dev_t that is used now may as well be a truncated
345 * dev_t returned from previous syscalls. Just return a bzeroed
346 * ustat in that case.
348 dev = makedev(args->dev >> 8, args->dev & 0xFF);
349 if (vfinddev(dev, VCHR, &vp)) {
350 if (vp->v_mount == NULL)
352 stat = &(vp->v_mount->mnt_stat);
353 error = VFS_STATFS(vp->v_mount, stat, p);
357 lu.f_tfree = stat->f_bfree;
358 lu.f_tinode = stat->f_ffree;
361 return (copyout(&lu, args->ubuf, sizeof(lu)));
364 #if defined(__i386__)
367 stat64_copyout(struct stat *buf, void *ubuf)
369 struct l_stat64 lbuf;
371 bzero(&lbuf, sizeof(lbuf));
372 lbuf.st_dev = uminor(buf->st_dev) | (umajor(buf->st_dev) << 8);
373 lbuf.st_ino = buf->st_ino;
374 lbuf.st_mode = buf->st_mode;
375 lbuf.st_nlink = buf->st_nlink;
376 lbuf.st_uid = buf->st_uid;
377 lbuf.st_gid = buf->st_gid;
378 lbuf.st_rdev = buf->st_rdev;
379 lbuf.st_size = buf->st_size;
380 lbuf.st_atime = buf->st_atime;
381 lbuf.st_mtime = buf->st_mtime;
382 lbuf.st_ctime = buf->st_ctime;
383 lbuf.st_blksize = buf->st_blksize;
384 lbuf.st_blocks = buf->st_blocks;
387 * The __st_ino field makes all the difference. In the Linux kernel
388 * it is conditionally compiled based on STAT64_HAS_BROKEN_ST_INO,
389 * but without the assignment to __st_ino the runtime linker refuses
390 * to mmap(2) any shared libraries. I guess it's broken alright :-)
392 lbuf.__st_ino = buf->st_ino;
394 return (copyout(&lbuf, ubuf, sizeof(lbuf)));
398 linux_stat64(struct linux_stat64_args *args)
400 struct proc *p = curproc;
406 sg = stackgap_init();
407 CHECKALTEXIST(&sg, args->filename);
411 printf(ARGS(stat64, "%s, *"), args->filename);
414 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | NOOBJ, UIO_USERSPACE,
419 NDFREE(&nd, NDF_ONLY_PNBUF);
421 error = vn_stat(nd.ni_vp, &buf, p);
426 return (stat64_copyout(&buf, args->statbuf));
430 linux_lstat64(struct linux_lstat64_args *args)
432 struct proc *p = curproc;
438 sg = stackgap_init();
439 CHECKALTEXIST(&sg, args->filename);
443 printf(ARGS(lstat64, "%s, *"), args->filename);
446 NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | NOOBJ, UIO_USERSPACE,
451 NDFREE(&nd, NDF_ONLY_PNBUF);
453 error = vn_stat(nd.ni_vp, &sb, p);
458 return (stat64_copyout(&sb, args->statbuf));
462 linux_fstat64(struct linux_fstat64_args *args)
464 struct proc *p = curproc;
465 struct filedesc *fdp;
472 printf(ARGS(fstat64, "%d, *"), args->fd);
476 if ((unsigned)args->fd >= fdp->fd_nfiles ||
477 (fp = fdp->fd_ofiles[args->fd]) == NULL)
480 error = fo_stat(fp, &buf, p);
482 error = stat64_copyout(&buf, args->statbuf);
487 #endif /* __i386__ */