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 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD: stable/10/sys/compat/linux/linux_stats.c 323366 2017-09-09 14:30:16Z emaste $"); 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 63static void 64translate_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 75static int 76linux_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_vnhook(td, flag, fd, path, pathseg, sbp, 81 translate_vnhook_major_minor)); 82} 83 84static int 85linux_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 92static int 93linux_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/* 102 * XXX: This was removed from newstat_copyout(), and almost identical 103 * XXX: code was in stat64_copyout(). findcdev() needs to be replaced 104 * XXX: with something that does lookup and locking properly. 105 * XXX: When somebody fixes this: please try to avoid duplicating it. 106 */ 107#if 0 108static void 109disk_foo(struct somestat *tbuf) 110{ 111 struct cdevsw *cdevsw; 112 struct cdev *dev; 113 114 /* Lie about disk drives which are character devices 115 * in FreeBSD but block devices under Linux. 116 */ 117 if (S_ISCHR(tbuf.st_mode) && 118 (dev = findcdev(buf->st_rdev)) != NULL) { 119 cdevsw = dev_refthread(dev); 120 if (cdevsw != NULL) { 121 if (cdevsw->d_flags & D_DISK) { 122 tbuf.st_mode &= ~S_IFMT; 123 tbuf.st_mode |= S_IFBLK; 124 125 /* XXX this may not be quite right */ 126 /* Map major number to 0 */ 127 tbuf.st_dev = minor(buf->st_dev) & 0xf; 128 tbuf.st_rdev = buf->st_rdev & 0xff; 129 } 130 dev_relthread(dev); 131 } 132 } 133 134} 135#endif 136 137static void 138translate_fd_major_minor(struct thread *td, int fd, struct stat *buf) 139{ 140 struct file *fp; 141 struct vnode *vp; 142 int major, minor; 143 144 /* 145 * No capability rights required here. 146 */ 147 if ((!S_ISCHR(buf->st_mode) && !S_ISBLK(buf->st_mode)) || 148 fget(td, fd, 0, &fp) != 0) 149 return; 150 vp = fp->f_vnode; 151 if (vp != NULL && vp->v_rdev != NULL && 152 linux_driver_get_major_minor(devtoname(vp->v_rdev), 153 &major, &minor) == 0) { 154 buf->st_rdev = (major << 8 | minor); 155 } else if (fp->f_type == DTYPE_PTS) { 156 struct tty *tp = fp->f_data; 157 158 /* Convert the numbers for the slave device. */ 159 if (linux_driver_get_major_minor(devtoname(tp->t_dev), 160 &major, &minor) == 0) { 161 buf->st_rdev = (major << 8 | minor); 162 } 163 } 164 fdrop(fp, td); 165} 166 167static int 168newstat_copyout(struct stat *buf, void *ubuf) 169{ 170 struct l_newstat tbuf; 171 172 bzero(&tbuf, sizeof(tbuf)); 173 tbuf.st_dev = minor(buf->st_dev) | (major(buf->st_dev) << 8); 174 tbuf.st_ino = buf->st_ino; 175 tbuf.st_mode = buf->st_mode; 176 tbuf.st_nlink = buf->st_nlink; 177 tbuf.st_uid = buf->st_uid; 178 tbuf.st_gid = buf->st_gid; 179 tbuf.st_rdev = buf->st_rdev; 180 tbuf.st_size = buf->st_size; 181 tbuf.st_atim.tv_sec = buf->st_atim.tv_sec; 182 tbuf.st_atim.tv_nsec = buf->st_atim.tv_nsec; 183 tbuf.st_mtim.tv_sec = buf->st_mtim.tv_sec; 184 tbuf.st_mtim.tv_nsec = buf->st_mtim.tv_nsec; 185 tbuf.st_ctim.tv_sec = buf->st_ctim.tv_sec; 186 tbuf.st_ctim.tv_nsec = buf->st_ctim.tv_nsec; 187 tbuf.st_blksize = buf->st_blksize; 188 tbuf.st_blocks = buf->st_blocks; 189 190 return (copyout(&tbuf, ubuf, sizeof(tbuf))); 191} 192 193int 194linux_newstat(struct thread *td, struct linux_newstat_args *args) 195{ 196 struct stat buf; 197 char *path; 198 int error; 199 200 LCONVPATHEXIST(td, args->path, &path); 201 202#ifdef DEBUG 203 if (ldebug(newstat)) 204 printf(ARGS(newstat, "%s, *"), path); 205#endif 206 207 error = linux_kern_stat(td, path, UIO_SYSSPACE, &buf); 208 LFREEPATH(path); 209 if (error) 210 return (error); 211 return (newstat_copyout(&buf, args->buf)); 212} 213 214int 215linux_newlstat(struct thread *td, struct linux_newlstat_args *args) 216{ 217 struct stat sb; 218 char *path; 219 int error; 220 221 LCONVPATHEXIST(td, args->path, &path); 222 223#ifdef DEBUG 224 if (ldebug(newlstat)) 225 printf(ARGS(newlstat, "%s, *"), path); 226#endif 227 228 error = linux_kern_lstat(td, path, UIO_SYSSPACE, &sb); 229 LFREEPATH(path); 230 if (error) 231 return (error); 232 return (newstat_copyout(&sb, args->buf)); 233} 234 235int 236linux_newfstat(struct thread *td, struct linux_newfstat_args *args) 237{ 238 struct stat buf; 239 int error; 240 241#ifdef DEBUG 242 if (ldebug(newfstat)) 243 printf(ARGS(newfstat, "%d, *"), args->fd); 244#endif 245 246 error = kern_fstat(td, args->fd, &buf); 247 translate_fd_major_minor(td, args->fd, &buf); 248 if (!error) 249 error = newstat_copyout(&buf, args->buf); 250 251 return (error); 252} 253 254#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 255static int 256stat_copyout(struct stat *buf, void *ubuf) 257{ 258 struct l_stat lbuf; 259 260 bzero(&lbuf, sizeof(lbuf)); 261 lbuf.st_dev = buf->st_dev; 262 lbuf.st_ino = buf->st_ino; 263 lbuf.st_mode = buf->st_mode; 264 lbuf.st_nlink = buf->st_nlink; 265 lbuf.st_uid = buf->st_uid; 266 lbuf.st_gid = buf->st_gid; 267 lbuf.st_rdev = buf->st_rdev; 268 if (buf->st_size < (quad_t)1 << 32) 269 lbuf.st_size = buf->st_size; 270 else 271 lbuf.st_size = -2; 272 lbuf.st_atim.tv_sec = buf->st_atim.tv_sec; 273 lbuf.st_atim.tv_nsec = buf->st_atim.tv_nsec; 274 lbuf.st_mtim.tv_sec = buf->st_mtim.tv_sec; 275 lbuf.st_mtim.tv_nsec = buf->st_mtim.tv_nsec; 276 lbuf.st_ctim.tv_sec = buf->st_ctim.tv_sec; 277 lbuf.st_ctim.tv_nsec = buf->st_ctim.tv_nsec; 278 lbuf.st_blksize = buf->st_blksize; 279 lbuf.st_blocks = buf->st_blocks; 280 lbuf.st_flags = buf->st_flags; 281 lbuf.st_gen = buf->st_gen; 282 283 return (copyout(&lbuf, ubuf, sizeof(lbuf))); 284} 285 286int 287linux_stat(struct thread *td, struct linux_stat_args *args) 288{ 289 struct stat buf; 290 char *path; 291 int error; 292 293 LCONVPATHEXIST(td, args->path, &path); 294 295#ifdef DEBUG 296 if (ldebug(stat)) 297 printf(ARGS(stat, "%s, *"), path); 298#endif 299 error = linux_kern_stat(td, path, UIO_SYSSPACE, &buf); 300 if (error) { 301 LFREEPATH(path); 302 return (error); 303 } 304 LFREEPATH(path); 305 return (stat_copyout(&buf, args->up)); 306} 307 308int 309linux_lstat(struct thread *td, struct linux_lstat_args *args) 310{ 311 struct stat buf; 312 char *path; 313 int error; 314 315 LCONVPATHEXIST(td, args->path, &path); 316 317#ifdef DEBUG 318 if (ldebug(lstat)) 319 printf(ARGS(lstat, "%s, *"), path); 320#endif 321 error = linux_kern_lstat(td, path, UIO_SYSSPACE, &buf); 322 if (error) { 323 LFREEPATH(path); 324 return (error); 325 } 326 LFREEPATH(path); 327 return (stat_copyout(&buf, args->up)); 328} 329#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 330 331struct l_statfs { 332 l_long f_type; 333 l_long f_bsize; 334 l_long f_blocks; 335 l_long f_bfree; 336 l_long f_bavail; 337 l_long f_files; 338 l_long f_ffree; 339 l_fsid_t f_fsid; 340 l_long f_namelen; 341 l_long f_spare[6]; 342}; 343 344#define LINUX_CODA_SUPER_MAGIC 0x73757245L 345#define LINUX_EXT2_SUPER_MAGIC 0xEF53L 346#define LINUX_HPFS_SUPER_MAGIC 0xf995e849L 347#define LINUX_ISOFS_SUPER_MAGIC 0x9660L 348#define LINUX_MSDOS_SUPER_MAGIC 0x4d44L 349#define LINUX_NCP_SUPER_MAGIC 0x564cL 350#define LINUX_NFS_SUPER_MAGIC 0x6969L 351#define LINUX_NTFS_SUPER_MAGIC 0x5346544EL 352#define LINUX_PROC_SUPER_MAGIC 0x9fa0L 353#define LINUX_UFS_SUPER_MAGIC 0x00011954L /* XXX - UFS_MAGIC in Linux */ 354#define LINUX_ZFS_SUPER_MAGIC 0x2FC12FC1 355#define LINUX_DEVFS_SUPER_MAGIC 0x1373L 356#define LINUX_SHMFS_MAGIC 0x01021994 357 358static long 359bsd_to_linux_ftype(const char *fstypename) 360{ 361 int i; 362 static struct {const char *bsd_name; long linux_type;} b2l_tbl[] = { 363 {"ufs", LINUX_UFS_SUPER_MAGIC}, 364 {"zfs", LINUX_ZFS_SUPER_MAGIC}, 365 {"cd9660", LINUX_ISOFS_SUPER_MAGIC}, 366 {"nfs", LINUX_NFS_SUPER_MAGIC}, 367 {"ext2fs", LINUX_EXT2_SUPER_MAGIC}, 368 {"procfs", LINUX_PROC_SUPER_MAGIC}, 369 {"msdosfs", LINUX_MSDOS_SUPER_MAGIC}, 370 {"ntfs", LINUX_NTFS_SUPER_MAGIC}, 371 {"nwfs", LINUX_NCP_SUPER_MAGIC}, 372 {"hpfs", LINUX_HPFS_SUPER_MAGIC}, 373 {"coda", LINUX_CODA_SUPER_MAGIC}, 374 {"devfs", LINUX_DEVFS_SUPER_MAGIC}, 375 {"tmpfs", LINUX_SHMFS_MAGIC}, 376 {NULL, 0L}}; 377 378 for (i = 0; b2l_tbl[i].bsd_name != NULL; i++) 379 if (strcmp(b2l_tbl[i].bsd_name, fstypename) == 0) 380 return (b2l_tbl[i].linux_type); 381 382 return (0L); 383} 384 385static int 386bsd_to_linux_statfs(struct statfs *bsd_statfs, struct l_statfs *linux_statfs) 387{ 388#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 389 uint64_t tmp; 390 391#define LINUX_HIBITS 0xffffffff00000000ULL 392 393 tmp = bsd_statfs->f_blocks | bsd_statfs->f_bfree | bsd_statfs->f_files | 394 bsd_statfs->f_bsize; 395 if ((bsd_statfs->f_bavail != -1 && (bsd_statfs->f_bavail & LINUX_HIBITS)) || 396 (bsd_statfs->f_ffree != -1 && (bsd_statfs->f_ffree & LINUX_HIBITS)) || 397 (tmp & LINUX_HIBITS)) 398 return (EOVERFLOW); 399#undef LINUX_HIBITS 400#endif 401 linux_statfs->f_type = bsd_to_linux_ftype(bsd_statfs->f_fstypename); 402 linux_statfs->f_bsize = bsd_statfs->f_bsize; 403 linux_statfs->f_blocks = bsd_statfs->f_blocks; 404 linux_statfs->f_bfree = bsd_statfs->f_bfree; 405 linux_statfs->f_bavail = bsd_statfs->f_bavail; 406 linux_statfs->f_ffree = bsd_statfs->f_ffree; 407 linux_statfs->f_files = bsd_statfs->f_files; 408 linux_statfs->f_fsid.val[0] = bsd_statfs->f_fsid.val[0]; 409 linux_statfs->f_fsid.val[1] = bsd_statfs->f_fsid.val[1]; 410 linux_statfs->f_namelen = MAXNAMLEN; 411 412 return (0); 413} 414 415int 416linux_statfs(struct thread *td, struct linux_statfs_args *args) 417{ 418 struct l_statfs linux_statfs; 419 struct statfs bsd_statfs; 420 char *path; 421 int error; 422 423 LCONVPATHEXIST(td, args->path, &path); 424 425#ifdef DEBUG 426 if (ldebug(statfs)) 427 printf(ARGS(statfs, "%s, *"), path); 428#endif 429 error = kern_statfs(td, path, UIO_SYSSPACE, &bsd_statfs); 430 LFREEPATH(path); 431 if (error) 432 return (error); 433 error = bsd_to_linux_statfs(&bsd_statfs, &linux_statfs); 434 if (error) 435 return (error); 436 return (copyout(&linux_statfs, args->buf, sizeof(linux_statfs))); 437} 438 439#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 440static void 441bsd_to_linux_statfs64(struct statfs *bsd_statfs, struct l_statfs64 *linux_statfs) 442{ 443 444 linux_statfs->f_type = bsd_to_linux_ftype(bsd_statfs->f_fstypename); 445 linux_statfs->f_bsize = bsd_statfs->f_bsize; 446 linux_statfs->f_blocks = bsd_statfs->f_blocks; 447 linux_statfs->f_bfree = bsd_statfs->f_bfree; 448 linux_statfs->f_bavail = bsd_statfs->f_bavail; 449 linux_statfs->f_ffree = bsd_statfs->f_ffree; 450 linux_statfs->f_files = bsd_statfs->f_files; 451 linux_statfs->f_fsid.val[0] = bsd_statfs->f_fsid.val[0]; 452 linux_statfs->f_fsid.val[1] = bsd_statfs->f_fsid.val[1]; 453 linux_statfs->f_namelen = MAXNAMLEN; 454} 455 456int 457linux_statfs64(struct thread *td, struct linux_statfs64_args *args) 458{ 459 struct l_statfs64 linux_statfs; 460 struct statfs bsd_statfs; 461 char *path; 462 int error; 463 464 if (args->bufsize != sizeof(struct l_statfs64)) 465 return EINVAL; 466 467 LCONVPATHEXIST(td, args->path, &path); 468 469#ifdef DEBUG 470 if (ldebug(statfs64)) 471 printf(ARGS(statfs64, "%s, *"), path); 472#endif 473 error = kern_statfs(td, path, UIO_SYSSPACE, &bsd_statfs); 474 LFREEPATH(path); 475 if (error) 476 return (error); 477 bsd_to_linux_statfs64(&bsd_statfs, &linux_statfs); 478 return (copyout(&linux_statfs, args->buf, sizeof(linux_statfs))); 479} 480 481int 482linux_fstatfs64(struct thread *td, struct linux_fstatfs64_args *args) 483{ 484 struct l_statfs64 linux_statfs; 485 struct statfs bsd_statfs; 486 int error; 487 488#ifdef DEBUG 489 if (ldebug(fstatfs64)) 490 printf(ARGS(fstatfs64, "%d, *"), args->fd); 491#endif 492 if (args->bufsize != sizeof(struct l_statfs64)) 493 return (EINVAL); 494 495 error = kern_fstatfs(td, args->fd, &bsd_statfs); 496 if (error) 497 return error; 498 bsd_to_linux_statfs64(&bsd_statfs, &linux_statfs); 499 return (copyout(&linux_statfs, args->buf, sizeof(linux_statfs))); 500} 501#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 502 503int 504linux_fstatfs(struct thread *td, struct linux_fstatfs_args *args) 505{ 506 struct l_statfs linux_statfs; 507 struct statfs bsd_statfs; 508 int error; 509 510#ifdef DEBUG 511 if (ldebug(fstatfs)) 512 printf(ARGS(fstatfs, "%d, *"), args->fd); 513#endif 514 error = kern_fstatfs(td, args->fd, &bsd_statfs); 515 if (error) 516 return (error); 517 error = bsd_to_linux_statfs(&bsd_statfs, &linux_statfs); 518 if (error) 519 return (error); 520 return (copyout(&linux_statfs, args->buf, sizeof(linux_statfs))); 521} 522 523struct l_ustat 524{ 525 l_daddr_t f_tfree; 526 l_ino_t f_tinode; 527 char f_fname[6]; 528 char f_fpack[6]; 529}; 530 531int 532linux_ustat(struct thread *td, struct linux_ustat_args *args) 533{ 534#ifdef DEBUG 535 if (ldebug(ustat)) 536 printf(ARGS(ustat, "%ju, *"), (uintmax_t)args->dev); 537#endif 538 539 return (EOPNOTSUPP); 540} 541 542#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 543 544static int 545stat64_copyout(struct stat *buf, void *ubuf) 546{ 547 struct l_stat64 lbuf; 548 549 bzero(&lbuf, sizeof(lbuf)); 550 lbuf.st_dev = minor(buf->st_dev) | (major(buf->st_dev) << 8); 551 lbuf.st_ino = buf->st_ino; 552 lbuf.st_mode = buf->st_mode; 553 lbuf.st_nlink = buf->st_nlink; 554 lbuf.st_uid = buf->st_uid; 555 lbuf.st_gid = buf->st_gid; 556 lbuf.st_rdev = buf->st_rdev; 557 lbuf.st_size = buf->st_size; 558 lbuf.st_atim.tv_sec = buf->st_atim.tv_sec; 559 lbuf.st_atim.tv_nsec = buf->st_atim.tv_nsec; 560 lbuf.st_mtim.tv_sec = buf->st_mtim.tv_sec; 561 lbuf.st_mtim.tv_nsec = buf->st_mtim.tv_nsec; 562 lbuf.st_ctim.tv_sec = buf->st_ctim.tv_sec; 563 lbuf.st_ctim.tv_nsec = buf->st_ctim.tv_nsec; 564 lbuf.st_blksize = buf->st_blksize; 565 lbuf.st_blocks = buf->st_blocks; 566 567 /* 568 * The __st_ino field makes all the difference. In the Linux kernel 569 * it is conditionally compiled based on STAT64_HAS_BROKEN_ST_INO, 570 * but without the assignment to __st_ino the runtime linker refuses 571 * to mmap(2) any shared libraries. I guess it's broken alright :-) 572 */ 573 lbuf.__st_ino = buf->st_ino; 574 575 return (copyout(&lbuf, ubuf, sizeof(lbuf))); 576} 577 578int 579linux_stat64(struct thread *td, struct linux_stat64_args *args) 580{ 581 struct stat buf; 582 char *filename; 583 int error; 584 585 LCONVPATHEXIST(td, args->filename, &filename); 586 587#ifdef DEBUG 588 if (ldebug(stat64)) 589 printf(ARGS(stat64, "%s, *"), filename); 590#endif 591 592 error = linux_kern_stat(td, filename, UIO_SYSSPACE, &buf); 593 LFREEPATH(filename); 594 if (error) 595 return (error); 596 return (stat64_copyout(&buf, args->statbuf)); 597} 598 599int 600linux_lstat64(struct thread *td, struct linux_lstat64_args *args) 601{ 602 struct stat sb; 603 char *filename; 604 int error; 605 606 LCONVPATHEXIST(td, args->filename, &filename); 607 608#ifdef DEBUG 609 if (ldebug(lstat64)) 610 printf(ARGS(lstat64, "%s, *"), args->filename); 611#endif 612 613 error = linux_kern_lstat(td, filename, UIO_SYSSPACE, &sb); 614 LFREEPATH(filename); 615 if (error) 616 return (error); 617 return (stat64_copyout(&sb, args->statbuf)); 618} 619 620int 621linux_fstat64(struct thread *td, struct linux_fstat64_args *args) 622{ 623 struct stat buf; 624 int error; 625 626#ifdef DEBUG 627 if (ldebug(fstat64)) 628 printf(ARGS(fstat64, "%d, *"), args->fd); 629#endif 630 631 error = kern_fstat(td, args->fd, &buf); 632 translate_fd_major_minor(td, args->fd, &buf); 633 if (!error) 634 error = stat64_copyout(&buf, args->statbuf); 635 636 return (error); 637} 638 639int 640linux_fstatat64(struct thread *td, struct linux_fstatat64_args *args) 641{ 642 char *path; 643 int error, dfd, flag; 644 struct stat buf; 645 646 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW) 647 return (EINVAL); 648 flag = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) ? 649 AT_SYMLINK_NOFOLLOW : 0; 650 651 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 652 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd); 653 654#ifdef DEBUG 655 if (ldebug(fstatat64)) 656 printf(ARGS(fstatat64, "%i, %s, %i"), args->dfd, path, args->flag); 657#endif 658 659 error = linux_kern_statat(td, flag, dfd, path, UIO_SYSSPACE, &buf); 660 if (!error) 661 error = stat64_copyout(&buf, args->statbuf); 662 LFREEPATH(path); 663 664 return (error); 665} 666 667#else /* __amd64__ && !COMPAT_LINUX32 */ 668 669int 670linux_newfstatat(struct thread *td, struct linux_newfstatat_args *args) 671{ 672 char *path; 673 int error, dfd, flag; 674 struct stat buf; 675 676 if (args->flag & ~LINUX_AT_SYMLINK_NOFOLLOW) 677 return (EINVAL); 678 flag = (args->flag & LINUX_AT_SYMLINK_NOFOLLOW) ? 679 AT_SYMLINK_NOFOLLOW : 0; 680 681 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 682 LCONVPATHEXIST_AT(td, args->pathname, &path, dfd); 683 684#ifdef DEBUG 685 if (ldebug(newfstatat)) 686 printf(ARGS(newfstatat, "%i, %s, %i"), args->dfd, path, args->flag); 687#endif 688 689 error = linux_kern_statat(td, flag, dfd, path, UIO_SYSSPACE, &buf); 690 if (error == 0) 691 error = newstat_copyout(&buf, args->statbuf); 692 LFREEPATH(path); 693 694 return (error); 695} 696 697#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 698 699int 700linux_syncfs(struct thread *td, struct linux_syncfs_args *args) 701{ 702 cap_rights_t rights; 703 struct mount *mp; 704 struct vnode *vp; 705 int error, save; 706 707 error = fgetvp(td, args->fd, cap_rights_init(&rights, CAP_FSYNC), &vp); 708 if (error != 0) 709 /* 710 * Linux syncfs() returns only EBADF, however fgetvp() 711 * can return EINVAL in case of file descriptor does 712 * not represent a vnode. XXX. 713 */ 714 return (error); 715 716 mp = vp->v_mount; 717 mtx_lock(&mountlist_mtx); 718 error = vfs_busy(mp, MBF_MNTLSTLOCK); 719 if (error != 0) { 720 /* See comment above. */ 721 mtx_unlock(&mountlist_mtx); 722 goto out; 723 } 724 if ((mp->mnt_flag & MNT_RDONLY) == 0 && 725 vn_start_write(NULL, &mp, V_NOWAIT) == 0) { 726 save = curthread_pflags_set(TDP_SYNCIO); 727 vfs_msync(mp, MNT_NOWAIT); 728 VFS_SYNC(mp, MNT_NOWAIT); 729 curthread_pflags_restore(save); 730 vn_finished_write(mp); 731 } 732 vfs_unbusy(mp); 733 734 out: 735 vrele(vp); 736 return (error); 737} 738