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 1.10 2003/10/21 01:05:09 daver 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/namei.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;
59 tbuf.st_dev = uminor(buf->st_dev) | (umajor(buf->st_dev) << 8);
60 tbuf.st_ino = buf->st_ino;
61 tbuf.st_mode = buf->st_mode;
62 tbuf.st_nlink = buf->st_nlink;
63 tbuf.st_uid = buf->st_uid;
64 tbuf.st_gid = buf->st_gid;
65 tbuf.st_rdev = buf->st_rdev;
66 tbuf.st_size = buf->st_size;
67 tbuf.st_atime = buf->st_atime;
68 tbuf.st_mtime = buf->st_mtime;
69 tbuf.st_ctime = buf->st_ctime;
70 tbuf.st_blksize = buf->st_blksize;
71 tbuf.st_blocks = buf->st_blocks;
73 /* Lie about disk drives which are character devices
74 * in FreeBSD but block devices under Linux.
76 if (S_ISCHR(tbuf.st_mode) &&
77 (dev = udev2dev(buf->st_rdev, 0)) != NODEV) {
78 if (dev_dport(dev) != NULL && (dev_dflags(dev) & D_DISK)) {
79 tbuf.st_mode &= ~S_IFMT;
80 tbuf.st_mode |= S_IFBLK;
82 /* XXX this may not be quite right */
83 /* Map major number to 0 */
84 tbuf.st_dev = uminor(buf->st_dev) & 0xf;
85 tbuf.st_rdev = buf->st_rdev & 0xff;
89 return (copyout(&tbuf, ubuf, sizeof(tbuf)));
93 linux_newstat(struct linux_newstat_args *args)
95 struct thread *td = curthread;
101 sg = stackgap_init();
102 CHECKALTEXIST(&sg, args->path);
106 printf(ARGS(newstat, "%s, *"), args->path);
109 NDINIT(&nd, NAMEI_LOOKUP, CNP_FOLLOW | CNP_LOCKLEAF | CNP_NOOBJ,
110 UIO_USERSPACE, args->path, td);
114 NDFREE(&nd, NDF_ONLY_PNBUF);
116 error = vn_stat(nd.ni_vp, &buf, td);
121 return (newstat_copyout(&buf, args->buf));
125 linux_newlstat(struct linux_newlstat_args *args)
127 struct thread *td = curthread;
133 sg = stackgap_init();
134 CHECKALTEXIST(&sg, args->path);
137 if (ldebug(newlstat))
138 printf(ARGS(newlstat, "%s, *"), args->path);
141 NDINIT(&nd, NAMEI_LOOKUP, CNP_LOCKLEAF | CNP_NOOBJ,
142 UIO_USERSPACE, args->path, td);
146 NDFREE(&nd, NDF_ONLY_PNBUF);
148 error = vn_stat(nd.ni_vp, &sb, td);
153 return (newstat_copyout(&sb, args->buf));
157 linux_newfstat(struct linux_newfstat_args *args)
163 if (ldebug(newfstat))
164 printf(ARGS(newfstat, "%d, *"), args->fd);
166 error = kern_fstat(args->fd, &buf);
169 error = newstat_copyout(&buf, args->buf);
173 /* XXX - All fields of type l_int are defined as l_long on i386 */
187 #define LINUX_CODA_SUPER_MAGIC 0x73757245L
188 #define LINUX_EXT2_SUPER_MAGIC 0xEF53L
189 #define LINUX_HPFS_SUPER_MAGIC 0xf995e849L
190 #define LINUX_ISOFS_SUPER_MAGIC 0x9660L
191 #define LINUX_MSDOS_SUPER_MAGIC 0x4d44L
192 #define LINUX_NCP_SUPER_MAGIC 0x564cL
193 #define LINUX_NFS_SUPER_MAGIC 0x6969L
194 #define LINUX_NTFS_SUPER_MAGIC 0x5346544EL
195 #define LINUX_PROC_SUPER_MAGIC 0x9fa0L
196 #define LINUX_UFS_SUPER_MAGIC 0x00011954L /* XXX - UFS_MAGIC in Linux */
199 bsd_to_linux_ftype(const char *fstypename)
202 static struct {const char *bsd_name; long linux_type;} b2l_tbl[] = {
203 {"ufs", LINUX_UFS_SUPER_MAGIC},
204 {"cd9660", LINUX_ISOFS_SUPER_MAGIC},
205 {"nfs", LINUX_NFS_SUPER_MAGIC},
206 {"ext2fs", LINUX_EXT2_SUPER_MAGIC},
207 {"procfs", LINUX_PROC_SUPER_MAGIC},
208 {"msdosfs", LINUX_MSDOS_SUPER_MAGIC},
209 {"ntfs", LINUX_NTFS_SUPER_MAGIC},
210 {"nwfs", LINUX_NCP_SUPER_MAGIC},
211 {"hpfs", LINUX_HPFS_SUPER_MAGIC},
212 {"coda", LINUX_CODA_SUPER_MAGIC},
215 for (i = 0; b2l_tbl[i].bsd_name != NULL; i++)
216 if (strcmp(b2l_tbl[i].bsd_name, fstypename) == 0)
217 return (b2l_tbl[i].linux_type);
223 linux_statfs(struct linux_statfs_args *args)
225 struct thread *td = curthread;
227 struct nameidata *ndp;
228 struct statfs *bsd_statfs;
230 struct l_statfs linux_statfs;
234 sg = stackgap_init();
235 CHECKALTEXIST(&sg, args->path);
239 printf(ARGS(statfs, "%s, *"), args->path);
242 NDINIT(ndp, NAMEI_LOOKUP, CNP_FOLLOW, UIO_USERSPACE, args->path, td);
246 NDFREE(ndp, NDF_ONLY_PNBUF);
247 mp = ndp->ni_vp->v_mount;
248 bsd_statfs = &mp->mnt_stat;
250 error = VFS_STATFS(mp, bsd_statfs, td);
253 bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
254 linux_statfs.f_type = bsd_to_linux_ftype(bsd_statfs->f_fstypename);
255 linux_statfs.f_bsize = bsd_statfs->f_bsize;
256 linux_statfs.f_blocks = bsd_statfs->f_blocks;
257 linux_statfs.f_bfree = bsd_statfs->f_bfree;
258 linux_statfs.f_bavail = bsd_statfs->f_bavail;
259 linux_statfs.f_ffree = bsd_statfs->f_ffree;
260 linux_statfs.f_files = bsd_statfs->f_files;
261 linux_statfs.f_fsid.val[0] = bsd_statfs->f_fsid.val[0];
262 linux_statfs.f_fsid.val[1] = bsd_statfs->f_fsid.val[1];
263 linux_statfs.f_namelen = MAXNAMLEN;
264 return copyout((caddr_t)&linux_statfs, (caddr_t)args->buf,
265 sizeof(linux_statfs));
269 linux_fstatfs(struct linux_fstatfs_args *args)
271 struct thread *td = curthread;
272 struct proc *p = td->td_proc;
275 struct statfs *bsd_statfs;
276 struct l_statfs linux_statfs;
283 printf(ARGS(fstatfs, "%d, *"), args->fd);
285 error = getvnode(p->p_fd, args->fd, &fp);
288 mp = ((struct vnode *)fp->f_data)->v_mount;
289 bsd_statfs = &mp->mnt_stat;
290 error = VFS_STATFS(mp, bsd_statfs, td);
293 bsd_statfs->f_flags = mp->mnt_flag & MNT_VISFLAGMASK;
294 linux_statfs.f_type = bsd_to_linux_ftype(bsd_statfs->f_fstypename);
295 linux_statfs.f_bsize = bsd_statfs->f_bsize;
296 linux_statfs.f_blocks = bsd_statfs->f_blocks;
297 linux_statfs.f_bfree = bsd_statfs->f_bfree;
298 linux_statfs.f_bavail = bsd_statfs->f_bavail;
299 linux_statfs.f_ffree = bsd_statfs->f_ffree;
300 linux_statfs.f_files = bsd_statfs->f_files;
301 linux_statfs.f_fsid.val[0] = bsd_statfs->f_fsid.val[0];
302 linux_statfs.f_fsid.val[1] = bsd_statfs->f_fsid.val[1];
303 linux_statfs.f_namelen = MAXNAMLEN;
304 return copyout((caddr_t)&linux_statfs, (caddr_t)args->buf,
305 sizeof(linux_statfs));
317 linux_ustat(struct linux_ustat_args *args)
319 struct thread *td = curthread;
328 printf(ARGS(ustat, "%d, *"), args->dev);
332 * lu.f_fname and lu.f_fpack are not used. They are always zeroed.
333 * lu.f_tinode and lu.f_tfree are set from the device's super block.
335 bzero(&lu, sizeof(lu));
338 * XXX - Don't return an error if we can't find a vnode for the
339 * device. Our dev_t is 32-bits whereas Linux only has a 16-bits
340 * dev_t. The dev_t that is used now may as well be a truncated
341 * dev_t returned from previous syscalls. Just return a bzeroed
342 * ustat in that case.
344 dev = makedev(args->dev >> 8, args->dev & 0xFF);
345 if (vfinddev(dev, VCHR, &vp)) {
346 if (vp->v_mount == NULL)
348 stat = &(vp->v_mount->mnt_stat);
349 error = VFS_STATFS(vp->v_mount, stat, td);
353 lu.f_tfree = stat->f_bfree;
354 lu.f_tinode = stat->f_ffree;
357 return (copyout(&lu, args->ubuf, sizeof(lu)));
360 #if defined(__i386__)
363 stat64_copyout(struct stat *buf, void *ubuf)
365 struct l_stat64 lbuf;
367 bzero(&lbuf, sizeof(lbuf));
368 lbuf.st_dev = uminor(buf->st_dev) | (umajor(buf->st_dev) << 8);
369 lbuf.st_ino = buf->st_ino;
370 lbuf.st_mode = buf->st_mode;
371 lbuf.st_nlink = buf->st_nlink;
372 lbuf.st_uid = buf->st_uid;
373 lbuf.st_gid = buf->st_gid;
374 lbuf.st_rdev = buf->st_rdev;
375 lbuf.st_size = buf->st_size;
376 lbuf.st_atime = buf->st_atime;
377 lbuf.st_mtime = buf->st_mtime;
378 lbuf.st_ctime = buf->st_ctime;
379 lbuf.st_blksize = buf->st_blksize;
380 lbuf.st_blocks = buf->st_blocks;
383 * The __st_ino field makes all the difference. In the Linux kernel
384 * it is conditionally compiled based on STAT64_HAS_BROKEN_ST_INO,
385 * but without the assignment to __st_ino the runtime linker refuses
386 * to mmap(2) any shared libraries. I guess it's broken alright :-)
388 lbuf.__st_ino = buf->st_ino;
390 return (copyout(&lbuf, ubuf, sizeof(lbuf)));
394 linux_stat64(struct linux_stat64_args *args)
396 struct thread *td = curthread;
402 sg = stackgap_init();
403 CHECKALTEXIST(&sg, args->filename);
407 printf(ARGS(stat64, "%s, *"), args->filename);
410 NDINIT(&nd, NAMEI_LOOKUP, CNP_FOLLOW | CNP_LOCKLEAF | CNP_NOOBJ,
411 UIO_USERSPACE, args->filename, td);
415 NDFREE(&nd, NDF_ONLY_PNBUF);
417 error = vn_stat(nd.ni_vp, &buf, td);
422 return (stat64_copyout(&buf, args->statbuf));
426 linux_lstat64(struct linux_lstat64_args *args)
428 struct thread *td = curthread;
434 sg = stackgap_init();
435 CHECKALTEXIST(&sg, args->filename);
439 printf(ARGS(lstat64, "%s, *"), args->filename);
442 NDINIT(&nd, NAMEI_LOOKUP, CNP_LOCKLEAF | CNP_NOOBJ,
443 UIO_USERSPACE, args->filename, td);
447 NDFREE(&nd, NDF_ONLY_PNBUF);
449 error = vn_stat(nd.ni_vp, &sb, td);
454 return (stat64_copyout(&sb, args->statbuf));
458 linux_fstat64(struct linux_fstat64_args *args)
465 printf(ARGS(fstat64, "%d, *"), args->fd);
467 error = kern_fstat(args->fd, &buf);
470 error = stat64_copyout(&buf, args->statbuf);
474 #endif /* __i386__ */