1 /*- 2 * Copyright (c) 1994-1995 Søren 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 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include "opt_compat.h" 33 34 #include <sys/param.h> 35 #include <sys/capsicum.h> 36 #include <sys/dirent.h> 37 #include <sys/file.h> 38 #include <sys/filedesc.h> 39 #include <sys/proc.h> 40 #include <sys/malloc.h> 41 #include <sys/mount.h> 42 #include <sys/namei.h> 43 #include <sys/stat.h> 44 #include <sys/syscallsubr.h> 45 #include <sys/systm.h> 46 #include <sys/tty.h> 47 #include <sys/vnode.h> 48 #include <sys/conf.h> 49 #include <sys/fcntl.h> 50 51 #ifdef COMPAT_LINUX32 52 #include <machine/../linux32/linux.h> 53 #include <machine/../linux32/linux32_proto.h> 54 #else 55 #include <machine/../linux/linux.h> 56 #include <machine/../linux/linux_proto.h> 57 #endif 58 59 #include <compat/linux/linux_util.h> 60 #include <compat/linux/linux_file.h> 61 62 63 static void 64 translate_vnhook_major_minor(struct vnode *vp, struct stat *sb) 65 { 66 int major, minor; 67 68 if (vp->v_type == VCHR && vp->v_rdev != NULL && 69 linux_driver_get_major_minor(devtoname(vp->v_rdev), 70 &major, &minor) == 0) { 71 sb->st_rdev = (major << 8 | minor); 72 } 73 } 74 75 static int 76 linux_kern_statat(struct thread *td, int flag, int fd, char *path, 77 enum uio_seg pathseg, struct stat *sbp) 78 { 79 80 return (kern_statat(td, flag, fd, path, pathseg, sbp, 81 translate_vnhook_major_minor)); 82 } 83 84 static int 85 linux_kern_stat(struct thread *td, char *path, enum uio_seg pathseg, 86 struct stat *sbp) 87 { 88 89 return (linux_kern_statat(td, 0, AT_FDCWD, path, pathseg, sbp)); 90 } 91 92 static int 93 linux_kern_lstat(struct thread *td, char *path, enum uio_seg pathseg, 94 struct stat *sbp) 95 { 96 97 return (linux_kern_statat(td, AT_SYMLINK_NOFOLLOW, AT_FDCWD, path, 98 pathseg, sbp)); 99 } 100 101 static void 102 translate_fd_major_minor(struct thread *td, int fd, struct stat *buf) 103 { 104 struct file *fp; 105 struct vnode *vp; 106 cap_rights_t rights; 107 int major, minor; 108 109 /* 110 * No capability rights required here. 111 */ 112 if ((!S_ISCHR(buf->st_mode) && !S_ISBLK(buf->st_mode)) || 113 fget(td, fd, cap_rights_init(&rights), &fp) != 0) 114 return; 115 vp = fp->f_vnode; 116 if (vp != NULL && vp->v_rdev != NULL && 117 linux_driver_get_major_minor(devtoname(vp->v_rdev), 118 &major, &minor) == 0) { 119 buf->st_rdev = (major << 8 | minor); 120 } else if (fp->f_type == DTYPE_PTS) { 121 struct tty *tp = fp->f_data; 122 123 /* Convert the numbers for the slave device. */ 124 if (linux_driver_get_major_minor(devtoname(tp->t_dev), 125 &major, &minor) == 0) { 126 buf->st_rdev = (major << 8 | minor); 127 } 128 } 129 fdrop(fp, td); 130 } 131 132 static int 133 newstat_copyout(struct stat *buf, void *ubuf) 134 { 135 struct l_newstat tbuf; 136 137 bzero(&tbuf, sizeof(tbuf)); 138 tbuf.st_dev = minor(buf->st_dev) | (major(buf->st_dev) << 8); 139 tbuf.st_ino = buf->st_ino; 140 tbuf.st_mode = buf->st_mode; 141 tbuf.st_nlink = buf->st_nlink; 142 tbuf.st_uid = buf->st_uid; 143 tbuf.st_gid = buf->st_gid; 144 tbuf.st_rdev = buf->st_rdev; 145 tbuf.st_size = buf->st_size; 146 tbuf.st_atim.tv_sec = buf->st_atim.tv_sec; 147 tbuf.st_atim.tv_nsec = buf->st_atim.tv_nsec; 148 tbuf.st_mtim.tv_sec = buf->st_mtim.tv_sec; 149 tbuf.st_mtim.tv_nsec = buf->st_mtim.tv_nsec; 150 tbuf.st_ctim.tv_sec = buf->st_ctim.tv_sec; 151 tbuf.st_ctim.tv_nsec = buf->st_ctim.tv_nsec; 152 tbuf.st_blksize = buf->st_blksize; 153 tbuf.st_blocks = buf->st_blocks; 154 155 return (copyout(&tbuf, ubuf, sizeof(tbuf))); 156 } 157 158 int 159 linux_newstat(struct thread *td, struct linux_newstat_args *args) 160 { 161 struct stat buf; 162 char *path; 163 int error; 164 165 LCONVPATHEXIST(td, args->path, &path); 166 167 #ifdef DEBUG 168 if (ldebug(newstat)) 169 printf(ARGS(newstat, "%s, *"), path); 170 #endif 171 172 error = linux_kern_stat(td, path, UIO_SYSSPACE, &buf); 173 LFREEPATH(path); 174 if (error) 175 return (error); 176 return (newstat_copyout(&buf, args->buf)); 177 } 178 179 int 180 linux_newlstat(struct thread *td, struct linux_newlstat_args *args) 181 { 182 struct stat sb; 183 char *path; 184 int error; 185 186 LCONVPATHEXIST(td, args->path, &path); 187 188 #ifdef DEBUG 189 if (ldebug(newlstat)) 190 printf(ARGS(newlstat, "%s, *"), path); 191 #endif 192 193 error = linux_kern_lstat(td, path, UIO_SYSSPACE, &sb); 194 LFREEPATH(path); 195 if (error) 196 return (error); 197 return (newstat_copyout(&sb, args->buf)); 198 } 199 200 int 201 linux_newfstat(struct thread *td, struct linux_newfstat_args *args) 202 { 203 struct stat buf; 204 int error; 205 206 #ifdef DEBUG 207 if (ldebug(newfstat)) 208 printf(ARGS(newfstat, "%d, *"), args->fd); 209 #endif 210 211 error = kern_fstat(td, args->fd, &buf); 212 translate_fd_major_minor(td, args->fd, &buf); 213 if (!error) 214 error = newstat_copyout(&buf, args->buf); 215 216 return (error); 217 } 218 219 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 220 static int 221 stat_copyout(struct stat *buf, void *ubuf) 222 { 223 struct l_stat lbuf; 224 225 bzero(&lbuf, sizeof(lbuf)); 226 lbuf.st_dev = buf->st_dev; 227 lbuf.st_ino = buf->st_ino; 228 lbuf.st_mode = buf->st_mode; 229 lbuf.st_nlink = buf->st_nlink; 230 lbuf.st_uid = buf->st_uid; 231 lbuf.st_gid = buf->st_gid; 232 lbuf.st_rdev = buf->st_rdev; 233 if (buf->st_size < (quad_t)1 << 32) 234 lbuf.st_size = buf->st_size; 235 else 236 lbuf.st_size = -2; 237 lbuf.st_atim.tv_sec = buf->st_atim.tv_sec; 238 lbuf.st_atim.tv_nsec = buf->st_atim.tv_nsec; 239 lbuf.st_mtim.tv_sec = buf->st_mtim.tv_sec; 240 lbuf.st_mtim.tv_nsec = buf->st_mtim.tv_nsec; 241 lbuf.st_ctim.tv_sec = buf->st_ctim.tv_sec; 242 lbuf.st_ctim.tv_nsec = buf->st_ctim.tv_nsec; 243 lbuf.st_blksize = buf->st_blksize; 244 lbuf.st_blocks = buf->st_blocks; 245 lbuf.st_flags = buf->st_flags; 246 lbuf.st_gen = buf->st_gen; 247 248 return (copyout(&lbuf, ubuf, sizeof(lbuf))); 249 } 250 251 int 252 linux_stat(struct thread *td, struct linux_stat_args *args) 253 { 254 struct stat buf; 255 char *path; 256 int error; 257 258 LCONVPATHEXIST(td, args->path, &path); 259 260 #ifdef DEBUG 261 if (ldebug(stat)) 262 printf(ARGS(stat, "%s, *"), path); 263 #endif 264 error = linux_kern_stat(td, path, UIO_SYSSPACE, &buf); 265 if (error) { 266 LFREEPATH(path); 267 return (error); 268 } 269 LFREEPATH(path); 270 return (stat_copyout(&buf, args->up)); 271 } 272 273 int 274 linux_lstat(struct thread *td, struct linux_lstat_args *args) 275 { 276 struct stat buf; 277 char *path; 278 int error; 279 280 LCONVPATHEXIST(td, args->path, &path); 281 282 #ifdef DEBUG 283 if (ldebug(lstat)) 284 printf(ARGS(lstat, "%s, *"), path); 285 #endif 286 error = linux_kern_lstat(td, path, UIO_SYSSPACE, &buf); 287 if (error) { 288 LFREEPATH(path); 289 return (error); 290 } 291 LFREEPATH(path); 292 return (stat_copyout(&buf, args->up)); 293 } 294 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 295 296 struct l_statfs { 297 l_long f_type; 298 l_long f_bsize; 299 l_long f_blocks; 300 l_long f_bfree; 301 l_long f_bavail; 302 l_long f_files; 303 l_long f_ffree; 304 l_fsid_t f_fsid; 305 l_long f_namelen; 306 l_long f_frsize; 307 l_long f_flags; 308 l_long f_spare[4]; 309 }; 310 311 #define LINUX_CODA_SUPER_MAGIC 0x73757245L 312 #define LINUX_EXT2_SUPER_MAGIC 0xEF53L 313 #define LINUX_HPFS_SUPER_MAGIC 0xf995e849L 314 #define LINUX_ISOFS_SUPER_MAGIC 0x9660L 315 #define LINUX_MSDOS_SUPER_MAGIC 0x4d44L 316 #define LINUX_NCP_SUPER_MAGIC 0x564cL 317 #define LINUX_NFS_SUPER_MAGIC 0x6969L 318 #define LINUX_NTFS_SUPER_MAGIC 0x5346544EL 319 #define LINUX_PROC_SUPER_MAGIC 0x9fa0L 320 #define LINUX_UFS_SUPER_MAGIC 0x00011954L /* XXX - UFS_MAGIC in Linux */ 321 #define LINUX_DEVFS_SUPER_MAGIC 0x1373L 322 #define LINUX_SHMFS_MAGIC 0x01021994 323 324 static long 325 bsd_to_linux_ftype(const char *fstypename) 326 { 327 int i; 328 static struct {const char *bsd_name; long linux_type;} b2l_tbl[] = { 329 {"ufs", LINUX_UFS_SUPER_MAGIC}, 330 {"cd9660", LINUX_ISOFS_SUPER_MAGIC}, 331 {"nfs", LINUX_NFS_SUPER_MAGIC}, 332 {"ext2fs", LINUX_EXT2_SUPER_MAGIC}, 333 {"procfs", LINUX_PROC_SUPER_MAGIC}, 334 {"msdosfs", LINUX_MSDOS_SUPER_MAGIC}, 335 {"ntfs", LINUX_NTFS_SUPER_MAGIC}, 336 {"nwfs", LINUX_NCP_SUPER_MAGIC}, 337 {"hpfs", LINUX_HPFS_SUPER_MAGIC}, 338 {"coda", LINUX_CODA_SUPER_MAGIC}, 339 {"devfs", LINUX_DEVFS_SUPER_MAGIC}, 340 {"tmpfs", LINUX_SHMFS_MAGIC}, 341 {NULL, 0L}}; 342 343 for (i = 0; b2l_tbl[i].bsd_name != NULL; i++) 344 if (strcmp(b2l_tbl[i].bsd_name, fstypename) == 0) 345 return (b2l_tbl[i].linux_type); 346 347 return (0L); 348 } 349 350 static int 351 bsd_to_linux_statfs(struct statfs *bsd_statfs, struct l_statfs *linux_statfs) 352 { 353 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 354 uint64_t tmp; 355 356 #define LINUX_HIBITS 0xffffffff00000000ULL 357 358 tmp = bsd_statfs->f_blocks | bsd_statfs->f_bfree | bsd_statfs->f_files | 359 bsd_statfs->f_bsize; 360 if ((bsd_statfs->f_bavail != -1 && (bsd_statfs->f_bavail & LINUX_HIBITS)) || 361 (bsd_statfs->f_ffree != -1 && (bsd_statfs->f_ffree & LINUX_HIBITS)) || 362 (tmp & LINUX_HIBITS)) 363 return (EOVERFLOW); 364 #undef LINUX_HIBITS 365 #endif 366 linux_statfs->f_type = bsd_to_linux_ftype(bsd_statfs->f_fstypename); 367 linux_statfs->f_bsize = bsd_statfs->f_bsize; 368 linux_statfs->f_blocks = bsd_statfs->f_blocks; 369 linux_statfs->f_bfree = bsd_statfs->f_bfree; 370 linux_statfs->f_bavail = bsd_statfs->f_bavail; 371 linux_statfs->f_ffree = bsd_statfs->f_ffree; 372 linux_statfs->f_files = bsd_statfs->f_files; 373 linux_statfs->f_fsid.val[0] = bsd_statfs->f_fsid.val[0]; 374 linux_statfs->f_fsid.val[1] = bsd_statfs->f_fsid.val[1]; 375 linux_statfs->f_namelen = MAXNAMLEN; 376 linux_statfs->f_frsize = bsd_statfs->f_bsize; 377 linux_statfs->f_flags = 0; 378 memset(linux_statfs->f_spare, 0, sizeof(linux_statfs->f_spare)); 379 380 return (0); 381 } 382 383 int 384 linux_statfs(struct thread *td, struct linux_statfs_args *args) 385 { 386 struct l_statfs linux_statfs; 387 struct statfs *bsd_statfs; 388 char *path; 389 int error; 390 391 LCONVPATHEXIST(td, args->path, &path); 392 393 #ifdef DEBUG 394 if (ldebug(statfs)) 395 printf(ARGS(statfs, "%s, *"), path); 396 #endif 397 bsd_statfs = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK); 398 error = kern_statfs(td, path, UIO_SYSSPACE, bsd_statfs); 399 LFREEPATH(path); 400 if (error == 0) 401 error = bsd_to_linux_statfs(bsd_statfs, &linux_statfs); 402 free(bsd_statfs, M_STATFS); 403 if (error != 0) 404 return (error); 405 return (copyout(&linux_statfs, args->buf, sizeof(linux_statfs))); 406 } 407 408 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 409 static void 410 bsd_to_linux_statfs64(struct statfs *bsd_statfs, struct l_statfs64 *linux_statfs) 411 { 412 413 linux_statfs->f_type = bsd_to_linux_ftype(bsd_statfs->f_fstypename); 414 linux_statfs->f_bsize = bsd_statfs->f_bsize; 415 linux_statfs->f_blocks = bsd_statfs->f_blocks; 416 linux_statfs->f_bfree = bsd_statfs->f_bfree; 417 linux_statfs->f_bavail = bsd_statfs->f_bavail; 418 linux_statfs->f_ffree = bsd_statfs->f_ffree; 419 linux_statfs->f_files = bsd_statfs->f_files; 420 linux_statfs->f_fsid.val[0] = bsd_statfs->f_fsid.val[0]; 421 linux_statfs->f_fsid.val[1] = bsd_statfs->f_fsid.val[1]; 422 linux_statfs->f_namelen = MAXNAMLEN; 423 linux_statfs->f_frsize = bsd_statfs->f_bsize; 424 linux_statfs->f_flags = 0; 425 memset(linux_statfs->f_spare, 0, sizeof(linux_statfs->f_spare)); 426 } 427 428 int 429 linux_statfs64(struct thread *td, struct linux_statfs64_args *args) 430 { 431 struct l_statfs64 linux_statfs; 432 struct statfs *bsd_statfs; 433 char *path; 434 int error; 435 436 if (args->bufsize != sizeof(struct l_statfs64)) 437 return EINVAL; 438 439 LCONVPATHEXIST(td, args->path, &path); 440 441 #ifdef DEBUG 442 if (ldebug(statfs64)) 443 printf(ARGS(statfs64, "%s, *"), path); 444 #endif 445 bsd_statfs = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK); 446 error = kern_statfs(td, path, UIO_SYSSPACE, bsd_statfs); 447 LFREEPATH(path); 448 if (error == 0) 449 bsd_to_linux_statfs64(bsd_statfs, &linux_statfs); 450 free(bsd_statfs, M_STATFS); 451 if (error != 0) 452 return (error); 453 return (copyout(&linux_statfs, args->buf, sizeof(linux_statfs))); 454 } 455 456 int 457 linux_fstatfs64(struct thread *td, struct linux_fstatfs64_args *args) 458 { 459 struct l_statfs64 linux_statfs; 460 struct statfs *bsd_statfs; 461 int error; 462 463 #ifdef DEBUG 464 if (ldebug(fstatfs64)) 465 printf(ARGS(fstatfs64, "%d, *"), args->fd); 466 #endif 467 if (args->bufsize != sizeof(struct l_statfs64)) 468 return (EINVAL); 469 470 bsd_statfs = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK); 471 error = kern_fstatfs(td, args->fd, bsd_statfs); 472 if (error == 0) 473 bsd_to_linux_statfs64(bsd_statfs, &linux_statfs); 474 free(bsd_statfs, M_STATFS); 475 if (error != 0) 476 return (error); 477 return (copyout(&linux_statfs, args->buf, sizeof(linux_statfs))); 478 } 479 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 480 481 int 482 linux_fstatfs(struct thread *td, struct linux_fstatfs_args *args) 483 { 484 struct l_statfs linux_statfs; 485 struct statfs *bsd_statfs; 486 int error; 487 488 #ifdef DEBUG 489 if (ldebug(fstatfs)) 490 printf(ARGS(fstatfs, "%d, *"), args->fd); 491 #endif 492 bsd_statfs = malloc(sizeof(struct statfs), M_STATFS, M_WAITOK); 493 error = kern_fstatfs(td, args->fd, bsd_statfs); 494 if (error == 0) 495 error = bsd_to_linux_statfs(bsd_statfs, &linux_statfs); 496 free(bsd_statfs, M_STATFS); 497 if (error != 0) 498 return (error); 499 return (copyout(&linux_statfs, args->buf, sizeof(linux_statfs))); 500 } 501 502 struct l_ustat 503 { 504 l_daddr_t f_tfree; 505 l_ino_t f_tinode; 506 char f_fname[6]; 507 char f_fpack[6]; 508 }; 509 510 int 511 linux_ustat(struct thread *td, struct linux_ustat_args *args) 512 { 513 #ifdef DEBUG 514 if (ldebug(ustat)) 515 printf(ARGS(ustat, "%ju, *"), (uintmax_t)args->dev); 516 #endif 517 518 return (EOPNOTSUPP); 519 } 520 521 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 522 523 static int 524 stat64_copyout(struct stat *buf, void *ubuf) 525 { 526 struct l_stat64 lbuf; 527 528 bzero(&lbuf, sizeof(lbuf)); 529 lbuf.st_dev = minor(buf->st_dev) | (major(buf->st_dev) << 8); 530 lbuf.st_ino = buf->st_ino; 531 lbuf.st_mode = buf->st_mode; 532 lbuf.st_nlink = buf->st_nlink; 533 lbuf.st_uid = buf->st_uid; 534 lbuf.st_gid = buf->st_gid; 535 lbuf.st_rdev = buf->st_rdev; 536 lbuf.st_size = buf->st_size; 537 lbuf.st_atim.tv_sec = buf->st_atim.tv_sec; 538 lbuf.st_atim.tv_nsec = buf->st_atim.tv_nsec; 539 lbuf.st_mtim.tv_sec = buf->st_mtim.tv_sec; 540 lbuf.st_mtim.tv_nsec = buf->st_mtim.tv_nsec; 541 lbuf.st_ctim.tv_sec = buf->st_ctim.tv_sec; 542 lbuf.st_ctim.tv_nsec = buf->st_ctim.tv_nsec; 543 lbuf.st_blksize = buf->st_blksize; 544 lbuf.st_blocks = buf->st_blocks; 545 546 /* 547 * The __st_ino field makes all the difference. In the Linux kernel 548 * it is conditionally compiled based on STAT64_HAS_BROKEN_ST_INO, 549 * but without the assignment to __st_ino the runtime linker refuses 550 * to mmap(2) any shared libraries. I guess it's broken alright :-) 551 */ 552 lbuf.__st_ino = buf->st_ino; 553 554 return (copyout(&lbuf, ubuf, sizeof(lbuf))); 555 } 556 557 int 558 linux_stat64(struct thread *td, struct linux_stat64_args *args) 559 { 560 struct stat buf; 561 char *filename; 562 int error; 563 564 LCONVPATHEXIST(td, args->filename, &filename); 565 566 #ifdef DEBUG 567 if (ldebug(stat64)) 568 printf(ARGS(stat64, "%s, *"), filename); 569 #endif 570 571 error = linux_kern_stat(td, filename, UIO_SYSSPACE, &buf); 572 LFREEPATH(filename); 573 if (error) 574 return (error); 575 return (stat64_copyout(&buf, args->statbuf)); 576 } 577 578 int 579 linux_lstat64(struct thread *td, struct linux_lstat64_args *args) 580 { 581 struct stat sb; 582 char *filename; 583 int error; 584 585 LCONVPATHEXIST(td, args->filename, &filename); 586 587 #ifdef DEBUG 588 if (ldebug(lstat64)) 589 printf(ARGS(lstat64, "%s, *"), args->filename); 590 #endif 591 592 error = linux_kern_lstat(td, filename, UIO_SYSSPACE, &sb); 593 LFREEPATH(filename); 594 if (error) 595 return (error); 596 return (stat64_copyout(&sb, args->statbuf)); 597 } 598 599 int 600 linux_fstat64(struct thread *td, struct linux_fstat64_args *args) 601 { 602 struct stat buf; 603 int error; 604 605 #ifdef DEBUG 606 if (ldebug(fstat64)) 607 printf(ARGS(fstat64, "%d, *"), args->fd); 608 #endif 609 610 error = kern_fstat(td, args->fd, &buf); 611 translate_fd_major_minor(td, args->fd, &buf); 612 if (!error) 613 error = stat64_copyout(&buf, args->statbuf); 614 615 return (error); 616 } 617 618 int 619 linux_fstatat64(struct thread *td, struct linux_fstatat64_args *args) 620 { 621 char *path; 622 int error, dfd, flag; 623 struct stat buf; 624 625 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW) 626 return (EINVAL); 627 flag = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) ? 628 AT_SYMLINK_NOFOLLOW : 0; 629 630 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 631 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd); 632 633 #ifdef DEBUG 634 if (ldebug(fstatat64)) 635 printf(ARGS(fstatat64, "%i, %s, %i"), args->dfd, path, args->flag); 636 #endif 637 638 error = linux_kern_statat(td, flag, dfd, path, UIO_SYSSPACE, &buf); 639 if (!error) 640 error = stat64_copyout(&buf, args->statbuf); 641 LFREEPATH(path); 642 643 return (error); 644 } 645 646 #else /* __amd64__ && !COMPAT_LINUX32 */ 647 648 int 649 linux_newfstatat(struct thread *td, struct linux_newfstatat_args *args) 650 { 651 char *path; 652 int error, dfd, flag; 653 struct stat buf; 654 655 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW) 656 return (EINVAL); 657 flag = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) ? 658 AT_SYMLINK_NOFOLLOW : 0; 659 660 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 661 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd); 662 663 #ifdef DEBUG 664 if (ldebug(newfstatat)) 665 printf(ARGS(newfstatat, "%i, %s, %i"), args->dfd, path, args->flag); 666 #endif 667 668 error = linux_kern_statat(td, flag, dfd, path, UIO_SYSSPACE, &buf); 669 if (error == 0) 670 error = newstat_copyout(&buf, args->statbuf); 671 LFREEPATH(path); 672 673 return (error); 674 } 675 676 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 677 678 int 679 linux_syncfs(struct thread *td, struct linux_syncfs_args *args) 680 { 681 cap_rights_t rights; 682 struct mount *mp; 683 struct vnode *vp; 684 int error, save; 685 686 error = fgetvp(td, args->fd, cap_rights_init(&rights, CAP_FSYNC), &vp); 687 if (error != 0) 688 /* 689 * Linux syncfs() returns only EBADF, however fgetvp() 690 * can return EINVAL in case of file descriptor does 691 * not represent a vnode. XXX. 692 */ 693 return (error); 694 695 mp = vp->v_mount; 696 mtx_lock(&mountlist_mtx); 697 error = vfs_busy(mp, MBF_MNTLSTLOCK); 698 if (error != 0) { 699 /* See comment above. */ 700 mtx_unlock(&mountlist_mtx); 701 goto out; 702 } 703 if ((mp->mnt_flag & MNT_RDONLY) == 0 && 704 vn_start_write(NULL, &mp, V_NOWAIT) == 0) { 705 save = curthread_pflags_set(TDP_SYNCIO); 706 vfs_msync(mp, MNT_NOWAIT); 707 VFS_SYNC(mp, MNT_NOWAIT); 708 curthread_pflags_restore(save); 709 vn_finished_write(mp); 710 } 711 vfs_unbusy(mp); 712 713 out: 714 vrele(vp); 715 return (error); 716 } 717