1 /*- 2 * Copyright (c) 1994-1995 S�ren Schmidt 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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 16 * 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. 27 * 28 * $FreeBSD$ 29 */ 30 31 #include <sys/param.h> 32 #include <sys/conf.h> 33 #include <sys/dirent.h> 34 #include <sys/file.h> 35 #include <sys/filedesc.h> 36 #include <sys/proc.h> 37 #include <sys/mount.h> 38 #include <sys/namei.h> 39 #include <sys/stat.h> 40 #include <sys/sysctl.h> 41 #include <sys/systm.h> 42 #include <sys/vnode.h> 43 44 #include <machine/../linux/linux.h> 45 #include <machine/../linux/linux_proto.h> 46 #include <compat/linux/linux_util.h> 47 48 static int 49 newstat_copyout(struct stat *buf, void *ubuf) 50 { 51 struct l_newstat tbuf; 52 struct cdevsw *cdevsw; 53 dev_t dev; 54 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; 68 69 /* Lie about disk drives which are character devices 70 * in FreeBSD but block devices under Linux. 71 */ 72 if (S_ISCHR(tbuf.st_mode) && 73 (dev = udev2dev(buf->st_rdev, 0)) != NODEV) { 74 cdevsw = devsw(dev); 75 if (cdevsw != NULL && (cdevsw->d_flags & D_DISK)) { 76 tbuf.st_mode &= ~S_IFMT; 77 tbuf.st_mode |= S_IFBLK; 78 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; 83 } 84 } 85 86 return (copyout(&tbuf, ubuf, sizeof(tbuf))); 87 } 88 89 int 90 linux_newstat(struct thread *td, struct linux_newstat_args *args) 91 { 92 struct stat buf; 93 struct nameidata nd; 94 int error; 95 caddr_t sg; 96 97 sg = stackgap_init(); 98 CHECKALTEXIST(td, &sg, args->path); 99 100 #ifdef DEBUG 101 if (ldebug(newstat)) 102 printf(ARGS(newstat, "%s, *"), args->path); 103 #endif 104 105 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | NOOBJ, UIO_USERSPACE, 106 args->path, td); 107 error = namei(&nd); 108 if (error) 109 return (error); 110 NDFREE(&nd, NDF_ONLY_PNBUF); 111 112 error = vn_stat(nd.ni_vp, &buf, td); 113 vput(nd.ni_vp); 114 if (error) 115 return (error); 116 117 return (newstat_copyout(&buf, args->buf)); 118 } 119 120 int 121 linux_newlstat(struct thread *td, struct linux_newlstat_args *args) 122 { 123 int error; 124 struct stat sb; 125 struct nameidata nd; 126 caddr_t sg; 127 128 sg = stackgap_init(); 129 CHECKALTEXIST(td, &sg, args->path); 130 131 #ifdef DEBUG 132 if (ldebug(newlstat)) 133 printf(ARGS(newlstat, "%s, *"), args->path); 134 #endif 135 136 NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | NOOBJ, UIO_USERSPACE, 137 args->path, td); 138 error = namei(&nd); 139 if (error) 140 return (error); 141 NDFREE(&nd, NDF_ONLY_PNBUF); 142 143 error = vn_stat(nd.ni_vp, &sb, td); 144 vput(nd.ni_vp); 145 if (error) 146 return (error); 147 148 return (newstat_copyout(&sb, args->buf)); 149 } 150 151 int 152 linux_newfstat(struct thread *td, struct linux_newfstat_args *args) 153 { 154 struct file *fp; 155 struct stat buf; 156 int error; 157 158 #ifdef DEBUG 159 if (ldebug(newfstat)) 160 printf(ARGS(newfstat, "%d, *"), args->fd); 161 #endif 162 163 if ((error = fget(td, args->fd, &fp)) != 0) 164 return (error); 165 166 error = fo_stat(fp, &buf, td); 167 fdrop(fp, td); 168 if (!error) 169 error = newstat_copyout(&buf, args->buf); 170 171 return (error); 172 } 173 174 /* XXX - All fields of type l_int are defined as l_long on i386 */ 175 struct l_statfs { 176 l_int f_type; 177 l_int f_bsize; 178 l_int f_blocks; 179 l_int f_bfree; 180 l_int f_bavail; 181 l_int f_files; 182 l_int f_ffree; 183 l_fsid_t f_fsid; 184 l_int f_namelen; 185 l_int f_spare[6]; 186 }; 187 188 #define LINUX_CODA_SUPER_MAGIC 0x73757245L 189 #define LINUX_EXT2_SUPER_MAGIC 0xEF53L 190 #define LINUX_HPFS_SUPER_MAGIC 0xf995e849L 191 #define LINUX_ISOFS_SUPER_MAGIC 0x9660L 192 #define LINUX_MSDOS_SUPER_MAGIC 0x4d44L 193 #define LINUX_NCP_SUPER_MAGIC 0x564cL 194 #define LINUX_NFS_SUPER_MAGIC 0x6969L 195 #define LINUX_NTFS_SUPER_MAGIC 0x5346544EL 196 #define LINUX_PROC_SUPER_MAGIC 0x9fa0L 197 #define LINUX_UFS_SUPER_MAGIC 0x00011954L /* XXX - UFS_MAGIC in Linux */ 198 199 static long 200 bsd_to_linux_ftype(const char *fstypename) 201 { 202 int i; 203 static struct {const char *bsd_name; long linux_type;} b2l_tbl[] = { 204 {"ufs", LINUX_UFS_SUPER_MAGIC}, 205 {"cd9660", LINUX_ISOFS_SUPER_MAGIC}, 206 {"nfs", LINUX_NFS_SUPER_MAGIC}, 207 {"ext2fs", LINUX_EXT2_SUPER_MAGIC}, 208 {"procfs", LINUX_PROC_SUPER_MAGIC}, 209 {"msdosfs", LINUX_MSDOS_SUPER_MAGIC}, 210 {"ntfs", LINUX_NTFS_SUPER_MAGIC}, 211 {"nwfs", LINUX_NCP_SUPER_MAGIC}, 212 {"hpfs", LINUX_HPFS_SUPER_MAGIC}, 213 {"coda", LINUX_CODA_SUPER_MAGIC}, 214 {NULL, 0L}}; 215 216 for (i = 0; b2l_tbl[i].bsd_name != NULL; i++) 217 if (strcmp(b2l_tbl[i].bsd_name, fstypename) == 0) 218 return (b2l_tbl[i].linux_type); 219 220 return (0L); 221 } 222 223 int 224 linux_statfs(struct thread *td, struct linux_statfs_args *args) 225 { 226 struct mount *mp; 227 struct nameidata *ndp; 228 struct statfs *bsd_statfs; 229 struct nameidata nd; 230 struct l_statfs linux_statfs; 231 int error; 232 caddr_t sg; 233 234 sg = stackgap_init(); 235 CHECKALTEXIST(td, &sg, args->path); 236 237 #ifdef DEBUG 238 if (ldebug(statfs)) 239 printf(ARGS(statfs, "%s, *"), args->path); 240 #endif 241 ndp = &nd; 242 NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args->path, curthread); 243 error = namei(ndp); 244 if (error) 245 return error; 246 NDFREE(ndp, NDF_ONLY_PNBUF); 247 mp = ndp->ni_vp->v_mount; 248 bsd_statfs = &mp->mnt_stat; 249 vrele(ndp->ni_vp); 250 error = VFS_STATFS(mp, bsd_statfs, td); 251 if (error) 252 return error; 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)); 266 } 267 268 int 269 linux_fstatfs(struct thread *td, struct linux_fstatfs_args *args) 270 { 271 struct file *fp; 272 struct mount *mp; 273 struct statfs *bsd_statfs; 274 struct l_statfs linux_statfs; 275 int error; 276 277 #ifdef DEBUG 278 if (ldebug(fstatfs)) 279 printf(ARGS(fstatfs, "%d, *"), args->fd); 280 #endif 281 error = getvnode(td->td_proc->p_fd, args->fd, &fp); 282 if (error) 283 return error; 284 mp = ((struct vnode *)fp->f_data)->v_mount; 285 bsd_statfs = &mp->mnt_stat; 286 error = VFS_STATFS(mp, bsd_statfs, td); 287 if (error) { 288 fdrop(fp, td); 289 return error; 290 } 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 error = copyout((caddr_t)&linux_statfs, (caddr_t)args->buf, 303 sizeof(linux_statfs)); 304 fdrop(fp, td); 305 return error; 306 } 307 308 struct l_ustat 309 { 310 l_daddr_t f_tfree; 311 l_ino_t f_tinode; 312 char f_fname[6]; 313 char f_fpack[6]; 314 }; 315 316 int 317 linux_ustat(struct thread *td, struct linux_ustat_args *args) 318 { 319 struct l_ustat lu; 320 dev_t dev; 321 struct vnode *vp; 322 struct statfs *stat; 323 int error; 324 325 #ifdef DEBUG 326 if (ldebug(ustat)) 327 printf(ARGS(ustat, "%d, *"), args->dev); 328 #endif 329 330 /* 331 * lu.f_fname and lu.f_fpack are not used. They are always zeroed. 332 * lu.f_tinode and lu.f_tfree are set from the device's super block. 333 */ 334 bzero(&lu, sizeof(lu)); 335 336 /* 337 * XXX - Don't return an error if we can't find a vnode for the 338 * device. Our dev_t is 32-bits whereas Linux only has a 16-bits 339 * dev_t. The dev_t that is used now may as well be a truncated 340 * dev_t returned from previous syscalls. Just return a bzeroed 341 * ustat in that case. 342 */ 343 dev = makedev(args->dev >> 8, args->dev & 0xFF); 344 if (vfinddev(dev, VCHR, &vp)) { 345 if (vp->v_mount == NULL) 346 return (EINVAL); 347 stat = &(vp->v_mount->mnt_stat); 348 error = VFS_STATFS(vp->v_mount, stat, td); 349 if (error) 350 return (error); 351 352 lu.f_tfree = stat->f_bfree; 353 lu.f_tinode = stat->f_ffree; 354 } 355 356 return (copyout(&lu, args->ubuf, sizeof(lu))); 357 } 358 359 #if defined(__i386__) 360 361 static int 362 stat64_copyout(struct stat *buf, void *ubuf) 363 { 364 struct l_stat64 lbuf; 365 366 bzero(&lbuf, sizeof(lbuf)); 367 lbuf.st_dev = uminor(buf->st_dev) | (umajor(buf->st_dev) << 8); 368 lbuf.st_ino = buf->st_ino; 369 lbuf.st_mode = buf->st_mode; 370 lbuf.st_nlink = buf->st_nlink; 371 lbuf.st_uid = buf->st_uid; 372 lbuf.st_gid = buf->st_gid; 373 lbuf.st_rdev = buf->st_rdev; 374 lbuf.st_size = buf->st_size; 375 lbuf.st_atime = buf->st_atime; 376 lbuf.st_mtime = buf->st_mtime; 377 lbuf.st_ctime = buf->st_ctime; 378 lbuf.st_blksize = buf->st_blksize; 379 lbuf.st_blocks = buf->st_blocks; 380 381 /* 382 * The __st_ino field makes all the difference. In the Linux kernel 383 * it is conditionally compiled based on STAT64_HAS_BROKEN_ST_INO, 384 * but without the assignment to __st_ino the runtime linker refuses 385 * to mmap(2) any shared libraries. I guess it's broken alright :-) 386 */ 387 lbuf.__st_ino = buf->st_ino; 388 389 return (copyout(&lbuf, ubuf, sizeof(lbuf))); 390 } 391 392 int 393 linux_stat64(struct thread *td, struct linux_stat64_args *args) 394 { 395 struct stat buf; 396 struct nameidata nd; 397 int error; 398 caddr_t sg; 399 400 sg = stackgap_init(); 401 CHECKALTEXIST(td, &sg, args->filename); 402 403 #ifdef DEBUG 404 if (ldebug(stat64)) 405 printf(ARGS(stat64, "%s, *"), args->filename); 406 #endif 407 408 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF | NOOBJ, UIO_USERSPACE, 409 args->filename, td); 410 error = namei(&nd); 411 if (error) 412 return (error); 413 NDFREE(&nd, NDF_ONLY_PNBUF); 414 415 error = vn_stat(nd.ni_vp, &buf, td); 416 vput(nd.ni_vp); 417 if (error) 418 return (error); 419 420 return (stat64_copyout(&buf, args->statbuf)); 421 } 422 423 int 424 linux_lstat64(struct thread *td, struct linux_lstat64_args *args) 425 { 426 int error; 427 struct stat sb; 428 struct nameidata nd; 429 caddr_t sg; 430 431 sg = stackgap_init(); 432 CHECKALTEXIST(td, &sg, args->filename); 433 434 #ifdef DEBUG 435 if (ldebug(lstat64)) 436 printf(ARGS(lstat64, "%s, *"), args->filename); 437 #endif 438 439 NDINIT(&nd, LOOKUP, NOFOLLOW | LOCKLEAF | NOOBJ, UIO_USERSPACE, 440 args->filename, td); 441 error = namei(&nd); 442 if (error) 443 return (error); 444 NDFREE(&nd, NDF_ONLY_PNBUF); 445 446 error = vn_stat(nd.ni_vp, &sb, td); 447 vput(nd.ni_vp); 448 if (error) 449 return (error); 450 451 return (stat64_copyout(&sb, args->statbuf)); 452 } 453 454 int 455 linux_fstat64(struct thread *td, struct linux_fstat64_args *args) 456 { 457 struct filedesc *fdp; 458 struct file *fp; 459 struct stat buf; 460 int error; 461 462 #ifdef DEBUG 463 if (ldebug(fstat64)) 464 printf(ARGS(fstat64, "%d, *"), args->fd); 465 #endif 466 467 fdp = td->td_proc->p_fd; 468 if ((unsigned)args->fd >= fdp->fd_nfiles || 469 (fp = fdp->fd_ofiles[args->fd]) == NULL) 470 return (EBADF); 471 472 error = fo_stat(fp, &buf, td); 473 if (!error) 474 error = stat64_copyout(&buf, args->statbuf); 475 476 return (error); 477 } 478 479 #endif /* __i386__ */ 480