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 $
31 #include <sys/param.h>
33 #include <sys/dirent.h>
35 #include <sys/filedesc.h>
37 #include <sys/mount.h>
38 #include <sys/namei.h>
40 #include <sys/sysctl.h>
41 #include <sys/systm.h>
42 #include <sys/vnode.h>
44 #include <machine/../linux/linux.h>
45 #include <machine/../linux/linux_proto.h>
46 #include <compat/linux/linux_util.h>
49 newstat_copyout(struct stat *buf, void *ubuf)
51 struct l_newstat tbuf;
52 struct cdevsw *cdevsw;
55 tbuf.st_dev = uminor(buf->st_dev) | (umajor(buf->st_dev) << 8);
56 tbuf.st_ino = buf->st_ino;
57 tbuf.st_mode = buf->st_mode;
58 tbuf.st_nlink = buf->st_nlink;
59 tbuf.st_uid = buf->st_uid;
60 tbuf.st_gid = buf->st_gid;
61 tbuf.st_rdev = buf->st_rdev;
62 tbuf.st_size = buf->st_size;
63 tbuf.st_atime = buf->st_atime;
64 tbuf.st_mtime = buf->st_mtime;
65 tbuf.st_ctime = buf->st_ctime;
66 tbuf.st_blksize = buf->st_blksize;
67 tbuf.st_blocks = buf->st_blocks;
69 /* Lie about disk drives which are character devices
70 * in FreeBSD but block devices under Linux.
72 if (S_ISCHR(tbuf.st_mode) &&
73 (dev = udev2dev(buf->st_rdev, 0)) != NODEV) {
75 if (cdevsw != NULL && (cdevsw->d_flags & D_DISK)) {
76 tbuf.st_mode &= ~S_IFMT;
77 tbuf.st_mode |= S_IFBLK;
79 /* XXX this may not be quite right */
80 /* Map major number to 0 */
81 tbuf.st_dev = uminor(buf->st_dev) & 0xf;
82 tbuf.st_rdev = buf->st_rdev & 0xff;
86 return (copyout(&tbuf, ubuf, sizeof(tbuf)));
90 linux_newstat(struct proc *p, struct linux_newstat_args *args)
98 CHECKALTEXIST(p, &sg, args->path);
102 printf(ARGS(newstat, "%s, *"), args->path);
105 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | NOOBJ, UIO_USERSPACE,
110 NDFREE(&nd, NDF_ONLY_PNBUF);
112 error = vn_stat(nd.ni_vp, &buf, p);
117 return (newstat_copyout(&buf, args->buf));
121 linux_newlstat(struct proc *p, struct linux_newlstat_args *args)
128 sg = stackgap_init();
129 CHECKALTEXIST(p, &sg, args->path);
132 if (ldebug(newlstat))
133 printf(ARGS(newlstat, "%s, *"), args->path);
136 NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | NOOBJ, UIO_USERSPACE,
141 NDFREE(&nd, NDF_ONLY_PNBUF);
143 error = vn_stat(nd.ni_vp, &sb, p);
148 return (newstat_copyout(&sb, args->buf));
152 linux_newfstat(struct proc *p, struct linux_newfstat_args *args)
154 struct filedesc *fdp;
160 if (ldebug(newfstat))
161 printf(ARGS(newfstat, "%d, *"), args->fd);
165 if ((unsigned)args->fd >= fdp->fd_nfiles ||
166 (fp = fdp->fd_ofiles[args->fd]) == NULL)
169 error = fo_stat(fp, &buf, p);
171 error = newstat_copyout(&buf, args->buf);
176 /* XXX - All fields of type l_int are defined as l_long on i386 */
190 #define LINUX_CODA_SUPER_MAGIC 0x73757245L
191 #define LINUX_EXT2_SUPER_MAGIC 0xEF53L
192 #define LINUX_HPFS_SUPER_MAGIC 0xf995e849L
193 #define LINUX_ISOFS_SUPER_MAGIC 0x9660L
194 #define LINUX_MSDOS_SUPER_MAGIC 0x4d44L
195 #define LINUX_NCP_SUPER_MAGIC 0x564cL
196 #define LINUX_NFS_SUPER_MAGIC 0x6969L
197 #define LINUX_NTFS_SUPER_MAGIC 0x5346544EL
198 #define LINUX_PROC_SUPER_MAGIC 0x9fa0L
199 #define LINUX_UFS_SUPER_MAGIC 0x00011954L /* XXX - UFS_MAGIC in Linux */
202 bsd_to_linux_ftype(const char *fstypename)
205 static struct {const char *bsd_name; long linux_type;} b2l_tbl[] = {
206 {"ufs", LINUX_UFS_SUPER_MAGIC},
207 {"cd9660", LINUX_ISOFS_SUPER_MAGIC},
208 {"nfs", LINUX_NFS_SUPER_MAGIC},
209 {"ext2fs", LINUX_EXT2_SUPER_MAGIC},
210 {"procfs", LINUX_PROC_SUPER_MAGIC},
211 {"msdosfs", LINUX_MSDOS_SUPER_MAGIC},
212 {"ntfs", LINUX_NTFS_SUPER_MAGIC},
213 {"nwfs", LINUX_NCP_SUPER_MAGIC},
214 {"hpfs", LINUX_HPFS_SUPER_MAGIC},
215 {"coda", LINUX_CODA_SUPER_MAGIC},
218 for (i = 0; b2l_tbl[i].bsd_name != NULL; i++)
219 if (strcmp(b2l_tbl[i].bsd_name, fstypename) == 0)
220 return (b2l_tbl[i].linux_type);
226 linux_statfs(struct proc *p, struct linux_statfs_args *args)
229 struct nameidata *ndp;
230 struct statfs *bsd_statfs;
232 struct l_statfs linux_statfs;
236 sg = stackgap_init();
237 CHECKALTEXIST(p, &sg, args->path);
241 printf(ARGS(statfs, "%s, *"), args->path);
244 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->path, curproc);
248 NDFREE(ndp, NDF_ONLY_PNBUF);
249 mp = ndp->ni_vp->v_mount;
250 bsd_statfs = &mp->mnt_stat;
252 error = VFS_STATFS(mp, bsd_statfs, p);
255 bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
256 linux_statfs.f_type = bsd_to_linux_ftype(bsd_statfs->f_fstypename);
257 linux_statfs.f_bsize = bsd_statfs->f_bsize;
258 linux_statfs.f_blocks = bsd_statfs->f_blocks;
259 linux_statfs.f_bfree = bsd_statfs->f_bfree;
260 linux_statfs.f_bavail = bsd_statfs->f_bavail;
261 linux_statfs.f_ffree = bsd_statfs->f_ffree;
262 linux_statfs.f_files = bsd_statfs->f_files;
263 linux_statfs.f_fsid.val[0] = bsd_statfs->f_fsid.val[0];
264 linux_statfs.f_fsid.val[1] = bsd_statfs->f_fsid.val[1];
265 linux_statfs.f_namelen = MAXNAMLEN;
266 return copyout((caddr_t)&linux_statfs, (caddr_t)args->buf,
267 sizeof(linux_statfs));
271 linux_fstatfs(struct proc *p, struct linux_fstatfs_args *args)
275 struct statfs *bsd_statfs;
276 struct l_statfs linux_statfs;
281 printf(ARGS(fstatfs, "%d, *"), args->fd);
283 error = getvnode(p->p_fd, args->fd, &fp);
286 mp = ((struct vnode *)fp->f_data)->v_mount;
287 bsd_statfs = &mp->mnt_stat;
288 error = VFS_STATFS(mp, bsd_statfs, p);
291 bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
292 linux_statfs.f_type = bsd_to_linux_ftype(bsd_statfs->f_fstypename);
293 linux_statfs.f_bsize = bsd_statfs->f_bsize;
294 linux_statfs.f_blocks = bsd_statfs->f_blocks;
295 linux_statfs.f_bfree = bsd_statfs->f_bfree;
296 linux_statfs.f_bavail = bsd_statfs->f_bavail;
297 linux_statfs.f_ffree = bsd_statfs->f_ffree;
298 linux_statfs.f_files = bsd_statfs->f_files;
299 linux_statfs.f_fsid.val[0] = bsd_statfs->f_fsid.val[0];
300 linux_statfs.f_fsid.val[1] = bsd_statfs->f_fsid.val[1];
301 linux_statfs.f_namelen = MAXNAMLEN;
302 return copyout((caddr_t)&linux_statfs, (caddr_t)args->buf,
303 sizeof(linux_statfs));
315 linux_ustat(struct proc *p, struct linux_ustat_args *args)
325 printf(ARGS(ustat, "%d, *"), args->dev);
329 * lu.f_fname and lu.f_fpack are not used. They are always zeroed.
330 * lu.f_tinode and lu.f_tfree are set from the device's super block.
332 bzero(&lu, sizeof(lu));
335 * XXX - Don't return an error if we can't find a vnode for the
336 * device. Our dev_t is 32-bits whereas Linux only has a 16-bits
337 * dev_t. The dev_t that is used now may as well be a truncated
338 * dev_t returned from previous syscalls. Just return a bzeroed
339 * ustat in that case.
341 dev = makedev(args->dev >> 8, args->dev & 0xFF);
342 if (vfinddev(dev, VCHR, &vp)) {
343 if (vp->v_mount == NULL)
345 stat = &(vp->v_mount->mnt_stat);
346 error = VFS_STATFS(vp->v_mount, stat, p);
350 lu.f_tfree = stat->f_bfree;
351 lu.f_tinode = stat->f_ffree;
354 return (copyout(&lu, args->ubuf, sizeof(lu)));
357 #if defined(__i386__)
360 stat64_copyout(struct stat *buf, void *ubuf)
362 struct l_stat64 lbuf;
364 bzero(&lbuf, sizeof(lbuf));
365 lbuf.st_dev = uminor(buf->st_dev) | (umajor(buf->st_dev) << 8);
366 lbuf.st_ino = buf->st_ino;
367 lbuf.st_mode = buf->st_mode;
368 lbuf.st_nlink = buf->st_nlink;
369 lbuf.st_uid = buf->st_uid;
370 lbuf.st_gid = buf->st_gid;
371 lbuf.st_rdev = buf->st_rdev;
372 lbuf.st_size = buf->st_size;
373 lbuf.st_atime = buf->st_atime;
374 lbuf.st_mtime = buf->st_mtime;
375 lbuf.st_ctime = buf->st_ctime;
376 lbuf.st_blksize = buf->st_blksize;
377 lbuf.st_blocks = buf->st_blocks;
380 * The __st_ino field makes all the difference. In the Linux kernel
381 * it is conditionally compiled based on STAT64_HAS_BROKEN_ST_INO,
382 * but without the assignment to __st_ino the runtime linker refuses
383 * to mmap(2) any shared libraries. I guess it's broken alright :-)
385 lbuf.__st_ino = buf->st_ino;
387 return (copyout(&lbuf, ubuf, sizeof(lbuf)));
391 linux_stat64(struct proc *p, struct linux_stat64_args *args)
398 sg = stackgap_init();
399 CHECKALTEXIST(p, &sg, args->filename);
403 printf(ARGS(stat64, "%s, *"), args->filename);
406 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | NOOBJ, UIO_USERSPACE,
411 NDFREE(&nd, NDF_ONLY_PNBUF);
413 error = vn_stat(nd.ni_vp, &buf, p);
418 return (stat64_copyout(&buf, args->statbuf));
422 linux_lstat64(struct proc *p, struct linux_lstat64_args *args)
429 sg = stackgap_init();
430 CHECKALTEXIST(p, &sg, args->filename);
434 printf(ARGS(lstat64, "%s, *"), args->filename);
437 NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | NOOBJ, UIO_USERSPACE,
442 NDFREE(&nd, NDF_ONLY_PNBUF);
444 error = vn_stat(nd.ni_vp, &sb, p);
449 return (stat64_copyout(&sb, args->statbuf));
453 linux_fstat64(struct proc *p, struct linux_fstat64_args *args)
455 struct filedesc *fdp;
462 printf(ARGS(fstat64, "%d, *"), args->fd);
466 if ((unsigned)args->fd >= fdp->fd_nfiles ||
467 (fp = fdp->fd_ofiles[args->fd]) == NULL)
470 error = fo_stat(fp, &buf, p);
472 error = stat64_copyout(&buf, args->statbuf);
477 #endif /* __i386__ */