ukfs.c revision 1.22
1 /* $NetBSD: ukfs.c,v 1.22 2009/02/11 14:35:58 pooka Exp $ */ 2 3 /* 4 * Copyright (c) 2007, 2008 Antti Kantee. All Rights Reserved. 5 * 6 * Development of this software was supported by the 7 * Finnish Cultural Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 19 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 /* 32 * This library enables access to files systems directly without 33 * involving system calls. 34 */ 35 36 #ifdef __linux__ 37 #define _XOPEN_SOURCE 500 38 #define _BSD_SOURCE 39 #define _FILE_OFFSET_BITS 64 40 #endif 41 42 #include <sys/param.h> 43 #include <sys/queue.h> 44 #include <sys/stat.h> 45 #include <sys/sysctl.h> 46 #include <sys/mount.h> 47 48 #include <assert.h> 49 #include <dirent.h> 50 #include <dlfcn.h> 51 #include <err.h> 52 #include <errno.h> 53 #include <fcntl.h> 54 #include <pthread.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <string.h> 58 #include <unistd.h> 59 #include <stdint.h> 60 61 #include <rump/ukfs.h> 62 63 #include <rump/rump.h> 64 #include <rump/rump_syscalls.h> 65 66 #define UKFS_MODE_DEFAULT 0555 67 68 struct ukfs { 69 struct mount *ukfs_mp; 70 struct vnode *ukfs_rvp; 71 72 pthread_spinlock_t ukfs_spin; 73 pid_t ukfs_nextpid; 74 struct vnode *ukfs_cdir; 75 int ukfs_devfd; 76 }; 77 78 struct mount * 79 ukfs_getmp(struct ukfs *ukfs) 80 { 81 82 return ukfs->ukfs_mp; 83 } 84 85 struct vnode * 86 ukfs_getrvp(struct ukfs *ukfs) 87 { 88 struct vnode *rvp; 89 90 rvp = ukfs->ukfs_rvp; 91 rump_vp_incref(rvp); 92 93 return rvp; 94 } 95 96 #ifdef DONT_WANT_PTHREAD_LINKAGE 97 #define pthread_spin_lock(a) 98 #define pthread_spin_unlock(a) 99 #define pthread_spin_init(a,b) 100 #define pthread_spin_destroy(a) 101 #endif 102 103 static pid_t 104 nextpid(struct ukfs *ukfs) 105 { 106 pid_t npid; 107 108 pthread_spin_lock(&ukfs->ukfs_spin); 109 if (ukfs->ukfs_nextpid == 0) 110 ukfs->ukfs_nextpid++; 111 npid = ukfs->ukfs_nextpid++; 112 pthread_spin_unlock(&ukfs->ukfs_spin); 113 114 return npid; 115 } 116 117 static void 118 precall(struct ukfs *ukfs) 119 { 120 struct vnode *rvp, *cvp; 121 122 rump_setup_curlwp(nextpid(ukfs), 1, 1); 123 rvp = ukfs_getrvp(ukfs); 124 pthread_spin_lock(&ukfs->ukfs_spin); 125 cvp = ukfs->ukfs_cdir; 126 pthread_spin_unlock(&ukfs->ukfs_spin); 127 rump_rcvp_set(rvp, cvp); /* takes refs */ 128 rump_vp_rele(rvp); 129 } 130 131 static void 132 postcall(struct ukfs *ukfs) 133 { 134 struct vnode *rvp; 135 136 rvp = ukfs_getrvp(ukfs); 137 rump_rcvp_set(NULL, rvp); 138 rump_vp_rele(rvp); 139 rump_clear_curlwp(); 140 } 141 142 int 143 _ukfs_init(int version) 144 { 145 int rv; 146 147 if (version != UKFS_VERSION) { 148 printf("incompatible ukfs version, %d vs. %d\n", 149 version, UKFS_VERSION); 150 errno = EPROGMISMATCH; 151 return -1; 152 } 153 154 if ((rv = rump_init()) != 0) { 155 errno = rv; 156 return -1; 157 } 158 159 return 0; 160 } 161 162 struct ukfs * 163 ukfs_mount(const char *vfsname, const char *devpath, const char *mountpath, 164 int mntflags, void *arg, size_t alen) 165 { 166 struct stat sb; 167 struct ukfs *fs = NULL; 168 struct vfsops *vfsops; 169 struct mount *mp = NULL; 170 int rv = 0, devfd = -1, rdonly; 171 172 vfsops = rump_vfs_getopsbyname(vfsname); 173 if (vfsops == NULL) { 174 rv = ENODEV; 175 goto out; 176 } 177 178 /* 179 * Try open and lock the device. if we can't open it, assume 180 * it's a file system which doesn't use a real device and let 181 * it slide. The mount will fail anyway if the fs requires a 182 * device. 183 * 184 * XXX: strictly speaking this is not 100% correct, as virtual 185 * file systems can use a device path which does exist and can 186 * be opened. E.g. tmpfs should be mountable multiple times 187 * with "device" path "/swap", but now isn't. But I think the 188 * chances are so low that it's currently acceptable to let 189 * this one slip. 190 */ 191 rdonly = mntflags & MNT_RDONLY; 192 devfd = open(devpath, rdonly ? O_RDONLY : O_RDWR); 193 if (devfd != -1) { 194 if (fstat(devfd, &sb) == -1) { 195 close(devfd); 196 devfd = -1; 197 rv = errno; 198 goto out; 199 } 200 201 /* 202 * We do this only for non-block device since the 203 * (NetBSD) kernel allows block device open only once. 204 */ 205 if (!S_ISBLK(sb.st_mode)) { 206 if (flock(devfd, LOCK_NB | (rdonly ? LOCK_SH:LOCK_EX)) 207 == -1) { 208 warnx("ukfs_mount: cannot get %s lock on " 209 "device", rdonly ? "shared" : "exclusive"); 210 close(devfd); 211 devfd = -1; 212 rv = errno; 213 goto out; 214 } 215 } else { 216 close(devfd); 217 devfd = -1; 218 } 219 } 220 221 fs = malloc(sizeof(struct ukfs)); 222 if (fs == NULL) { 223 rv = ENOMEM; 224 goto out; 225 } 226 memset(fs, 0, sizeof(struct ukfs)); 227 mp = rump_mnt_init(vfsops, mntflags); 228 229 rump_fakeblk_register(devpath); 230 rv = rump_mnt_mount(mp, mountpath, arg, &alen); 231 rump_fakeblk_deregister(devpath); 232 if (rv) { 233 goto out; 234 } 235 rv = rump_vfs_root(mp, &fs->ukfs_rvp, 0); 236 if (rv) { 237 goto out; 238 } 239 fs->ukfs_cdir = ukfs_getrvp(fs); 240 241 fs->ukfs_mp = mp; 242 pthread_spin_init(&fs->ukfs_spin, PTHREAD_PROCESS_SHARED); 243 fs->ukfs_devfd = devfd; 244 assert(rv == 0); 245 246 out: 247 if (rv) { 248 if (mp) 249 rump_mnt_destroy(mp); 250 if (fs) 251 free(fs); 252 errno = rv; 253 fs = NULL; 254 if (devfd != -1) { 255 flock(devfd, LOCK_UN); 256 close(devfd); 257 } 258 } 259 260 return fs; 261 } 262 263 void 264 ukfs_release(struct ukfs *fs, int flags) 265 { 266 int rv; 267 268 if ((flags & UKFS_RELFLAG_NOUNMOUNT) == 0) { 269 kauth_cred_t cred; 270 271 rump_vp_rele(fs->ukfs_cdir); 272 cred = rump_cred_suserget(); 273 rv = rump_vfs_sync(fs->ukfs_mp, 1, cred); 274 rump_cred_suserput(cred); 275 rump_vp_recycle_nokidding(ukfs_getrvp(fs)); 276 rv |= rump_vfs_unmount(fs->ukfs_mp, 0); 277 assert(rv == 0); 278 } 279 280 rump_vfs_syncwait(fs->ukfs_mp); 281 rump_mnt_destroy(fs->ukfs_mp); 282 283 pthread_spin_destroy(&fs->ukfs_spin); 284 if (fs->ukfs_devfd != -1) { 285 flock(fs->ukfs_devfd, LOCK_UN); 286 close(fs->ukfs_devfd); 287 } 288 free(fs); 289 } 290 291 #define STDCALL(ukfs, thecall) \ 292 int rv = 0; \ 293 \ 294 precall(ukfs); \ 295 rv = thecall; \ 296 postcall(ukfs); \ 297 return rv; 298 299 int 300 ukfs_getdents(struct ukfs *ukfs, const char *dirname, off_t *off, 301 uint8_t *buf, size_t bufsize) 302 { 303 struct uio *uio; 304 struct vnode *vp; 305 size_t resid; 306 kauth_cred_t cred; 307 int rv, eofflag; 308 309 precall(ukfs); 310 rv = rump_namei(RUMP_NAMEI_LOOKUP, RUMP_NAMEI_LOCKLEAF, dirname, 311 NULL, &vp, NULL); 312 postcall(ukfs); 313 if (rv) 314 goto out; 315 316 uio = rump_uio_setup(buf, bufsize, *off, RUMPUIO_READ); 317 cred = rump_cred_suserget(); 318 rv = RUMP_VOP_READDIR(vp, uio, cred, &eofflag, NULL, NULL); 319 rump_cred_suserput(cred); 320 RUMP_VOP_UNLOCK(vp, 0); 321 *off = rump_uio_getoff(uio); 322 resid = rump_uio_free(uio); 323 rump_vp_rele(vp); 324 325 out: 326 if (rv) { 327 errno = rv; 328 return -1; 329 } 330 331 /* LINTED: not totally correct return type, but follows syscall */ 332 return bufsize - resid; 333 } 334 335 ssize_t 336 ukfs_read(struct ukfs *ukfs, const char *filename, off_t off, 337 uint8_t *buf, size_t bufsize) 338 { 339 int fd; 340 ssize_t xfer = -1; /* XXXgcc */ 341 342 precall(ukfs); 343 fd = rump_sys_open(filename, RUMP_O_RDONLY, 0); 344 if (fd == -1) 345 goto out; 346 347 xfer = rump_sys_pread(fd, buf, bufsize, 0, off); 348 rump_sys_close(fd); 349 350 out: 351 postcall(ukfs); 352 if (fd == -1) { 353 return -1; 354 } 355 return xfer; 356 } 357 358 ssize_t 359 ukfs_write(struct ukfs *ukfs, const char *filename, off_t off, 360 uint8_t *buf, size_t bufsize) 361 { 362 int fd; 363 ssize_t xfer = -1; /* XXXgcc */ 364 365 precall(ukfs); 366 fd = rump_sys_open(filename, RUMP_O_WRONLY, 0); 367 if (fd == -1) 368 goto out; 369 370 /* write and commit */ 371 xfer = rump_sys_pwrite(fd, buf, bufsize, 0, off); 372 if (xfer > 0) 373 rump_sys_fsync(fd); 374 375 rump_sys_close(fd); 376 377 out: 378 postcall(ukfs); 379 if (fd == -1) { 380 return -1; 381 } 382 return xfer; 383 } 384 385 int 386 ukfs_create(struct ukfs *ukfs, const char *filename, mode_t mode) 387 { 388 int fd; 389 390 precall(ukfs); 391 fd = rump_sys_open(filename, RUMP_O_WRONLY | RUMP_O_CREAT, mode); 392 if (fd == -1) 393 return -1; 394 rump_sys_close(fd); 395 396 postcall(ukfs); 397 return 0; 398 } 399 400 int 401 ukfs_mknod(struct ukfs *ukfs, const char *path, mode_t mode, dev_t dev) 402 { 403 404 STDCALL(ukfs, rump_sys_mknod(path, mode, dev)); 405 } 406 407 int 408 ukfs_mkfifo(struct ukfs *ukfs, const char *path, mode_t mode) 409 { 410 411 STDCALL(ukfs, rump_sys_mkfifo(path, mode)); 412 } 413 414 int 415 ukfs_mkdir(struct ukfs *ukfs, const char *filename, mode_t mode) 416 { 417 418 STDCALL(ukfs, rump_sys_mkdir(filename, mode)); 419 } 420 421 int 422 ukfs_remove(struct ukfs *ukfs, const char *filename) 423 { 424 425 STDCALL(ukfs, rump_sys_unlink(filename)); 426 } 427 428 int 429 ukfs_rmdir(struct ukfs *ukfs, const char *filename) 430 { 431 432 STDCALL(ukfs, rump_sys_rmdir(filename)); 433 } 434 435 int 436 ukfs_link(struct ukfs *ukfs, const char *filename, const char *f_create) 437 { 438 439 STDCALL(ukfs, rump_sys_link(filename, f_create)); 440 } 441 442 int 443 ukfs_symlink(struct ukfs *ukfs, const char *filename, const char *linkname) 444 { 445 446 STDCALL(ukfs, rump_sys_symlink(filename, linkname)); 447 } 448 449 ssize_t 450 ukfs_readlink(struct ukfs *ukfs, const char *filename, 451 char *linkbuf, size_t buflen) 452 { 453 ssize_t rv; 454 455 precall(ukfs); 456 rv = rump_sys_readlink(filename, linkbuf, buflen); 457 postcall(ukfs); 458 return rv; 459 } 460 461 int 462 ukfs_rename(struct ukfs *ukfs, const char *from, const char *to) 463 { 464 465 STDCALL(ukfs, rump_sys_rename(from, to)); 466 } 467 468 int 469 ukfs_chdir(struct ukfs *ukfs, const char *path) 470 { 471 struct vnode *newvp, *oldvp; 472 int rv; 473 474 precall(ukfs); 475 rv = rump_sys_chdir(path); 476 if (rv == -1) 477 goto out; 478 479 newvp = rump_cdir_get(); 480 pthread_spin_lock(&ukfs->ukfs_spin); 481 oldvp = ukfs->ukfs_cdir; 482 ukfs->ukfs_cdir = newvp; 483 pthread_spin_unlock(&ukfs->ukfs_spin); 484 if (oldvp) 485 rump_vp_rele(oldvp); 486 487 out: 488 postcall(ukfs); 489 return rv; 490 } 491 492 int 493 ukfs_stat(struct ukfs *ukfs, const char *filename, struct stat *file_stat) 494 { 495 496 STDCALL(ukfs, rump_sys_stat(filename, file_stat)); 497 } 498 499 int 500 ukfs_lstat(struct ukfs *ukfs, const char *filename, struct stat *file_stat) 501 { 502 503 STDCALL(ukfs, rump_sys_lstat(filename, file_stat)); 504 } 505 506 int 507 ukfs_chmod(struct ukfs *ukfs, const char *filename, mode_t mode) 508 { 509 510 STDCALL(ukfs, rump_sys_chmod(filename, mode)); 511 } 512 513 int 514 ukfs_lchmod(struct ukfs *ukfs, const char *filename, mode_t mode) 515 { 516 517 STDCALL(ukfs, rump_sys_lchmod(filename, mode)); 518 } 519 520 int 521 ukfs_chown(struct ukfs *ukfs, const char *filename, uid_t uid, gid_t gid) 522 { 523 524 STDCALL(ukfs, rump_sys_chown(filename, uid, gid)); 525 } 526 527 int 528 ukfs_lchown(struct ukfs *ukfs, const char *filename, uid_t uid, gid_t gid) 529 { 530 531 STDCALL(ukfs, rump_sys_lchown(filename, uid, gid)); 532 } 533 534 int 535 ukfs_chflags(struct ukfs *ukfs, const char *filename, u_long flags) 536 { 537 538 STDCALL(ukfs, rump_sys_chflags(filename, flags)); 539 } 540 541 int 542 ukfs_lchflags(struct ukfs *ukfs, const char *filename, u_long flags) 543 { 544 545 STDCALL(ukfs, rump_sys_lchflags(filename, flags)); 546 } 547 548 int 549 ukfs_utimes(struct ukfs *ukfs, const char *filename, const struct timeval *tptr) 550 { 551 552 STDCALL(ukfs, rump_sys_utimes(filename, tptr)); 553 } 554 555 int 556 ukfs_lutimes(struct ukfs *ukfs, const char *filename, 557 const struct timeval *tptr) 558 { 559 560 STDCALL(ukfs, rump_sys_lutimes(filename, tptr)); 561 } 562 563 /* 564 * Dynamic module support 565 */ 566 567 /* load one library */ 568 569 /* 570 * XXX: the dlerror stuff isn't really threadsafe, but then again I 571 * can't protect against other threads calling dl*() outside of ukfs, 572 * so just live with it being flimsy 573 */ 574 #define UFSLIB "librumpfs_ufs.so" 575 int 576 ukfs_modload(const char *fname) 577 { 578 void *handle, *thesym; 579 struct stat sb; 580 const char *p; 581 int error; 582 583 if (stat(fname, &sb) == -1) 584 return -1; 585 586 handle = dlopen(fname, RTLD_GLOBAL); 587 if (handle == NULL) { 588 const char *dlmsg = dlerror(); 589 if (strstr(dlmsg, "Undefined symbol")) 590 return 0; 591 warnx("dlopen %s failed: %s\n", fname, dlmsg); 592 /* XXXerrno */ 593 return -1; 594 } 595 596 /* 597 * XXX: the ufs module is not loaded in the same fashion as the 598 * others. But we can't do dlclose() for it, since that would 599 * lead to not being able to load ffs/ext2fs/lfs. Hence hardcode 600 * and kludge around the issue for now. But this should really 601 * be fixed by fixing sys/ufs/ufs to be a kernel module. 602 */ 603 if ((p = strrchr(fname, '/')) != NULL) 604 p++; 605 else 606 p = fname; 607 if (strcmp(p, UFSLIB) == 0) 608 return 1; 609 610 thesym = dlsym(handle, "__start_link_set_modules"); 611 if (thesym) { 612 error = rump_module_load(thesym); 613 if (error) 614 goto errclose; 615 return 1; 616 } 617 error = EINVAL; 618 619 errclose: 620 dlclose(handle); 621 errno = error; 622 return -1; 623 } 624 625 struct loadfail { 626 char *pname; 627 628 LIST_ENTRY(loadfail) entries; 629 }; 630 631 #define RUMPFSMOD_PREFIX "librumpfs_" 632 #define RUMPFSMOD_SUFFIX ".so" 633 634 int 635 ukfs_modload_dir(const char *dir) 636 { 637 char nbuf[MAXPATHLEN+1], *p; 638 struct dirent entry, *result; 639 DIR *libdir; 640 struct loadfail *lf, *nlf; 641 int error, nloaded = 0, redo; 642 LIST_HEAD(, loadfail) lfs; 643 644 libdir = opendir(dir); 645 if (libdir == NULL) 646 return -1; 647 648 LIST_INIT(&lfs); 649 for (;;) { 650 if ((error = readdir_r(libdir, &entry, &result)) != 0) 651 break; 652 if (!result) 653 break; 654 if (strncmp(result->d_name, RUMPFSMOD_PREFIX, 655 strlen(RUMPFSMOD_PREFIX)) != 0) 656 continue; 657 if (((p = strstr(result->d_name, RUMPFSMOD_SUFFIX)) == NULL) 658 || strlen(p) != strlen(RUMPFSMOD_SUFFIX)) 659 continue; 660 strlcpy(nbuf, dir, sizeof(nbuf)); 661 strlcat(nbuf, "/", sizeof(nbuf)); 662 strlcat(nbuf, result->d_name, sizeof(nbuf)); 663 switch (ukfs_modload(nbuf)) { 664 case 0: 665 lf = malloc(sizeof(*lf)); 666 if (lf == NULL) { 667 error = ENOMEM; 668 break; 669 } 670 lf->pname = strdup(nbuf); 671 if (lf->pname == NULL) { 672 free(lf); 673 error = ENOMEM; 674 break; 675 } 676 LIST_INSERT_HEAD(&lfs, lf, entries); 677 break; 678 case 1: 679 nloaded++; 680 break; 681 default: 682 /* ignore errors */ 683 break; 684 } 685 } 686 closedir(libdir); 687 if (error && nloaded != 0) 688 error = 0; 689 690 /* 691 * El-cheapo dependency calculator. Just try to load the 692 * modules n times in a loop 693 */ 694 for (redo = 1; redo;) { 695 redo = 0; 696 nlf = LIST_FIRST(&lfs); 697 while ((lf = nlf) != NULL) { 698 nlf = LIST_NEXT(lf, entries); 699 if (ukfs_modload(lf->pname) == 1) { 700 nloaded++; 701 redo = 1; 702 LIST_REMOVE(lf, entries); 703 free(lf->pname); 704 free(lf); 705 } 706 } 707 } 708 709 while ((lf = LIST_FIRST(&lfs)) != NULL) { 710 LIST_REMOVE(lf, entries); 711 free(lf->pname); 712 free(lf); 713 } 714 715 if (error && nloaded == 0) { 716 errno = error; 717 return -1; 718 } 719 720 return nloaded; 721 } 722 723 /* XXX: this code uses definitions from NetBSD, needs rumpdefs */ 724 ssize_t 725 ukfs_vfstypes(char *buf, size_t buflen) 726 { 727 int mib[3]; 728 struct sysctlnode q, ans[128]; 729 size_t alen; 730 int i; 731 732 mib[0] = CTL_VFS; 733 mib[1] = VFS_GENERIC; 734 mib[2] = CTL_QUERY; 735 alen = sizeof(ans); 736 737 memset(&q, 0, sizeof(q)); 738 q.sysctl_flags = SYSCTL_VERSION; 739 740 if (rump_sys___sysctl(mib, 3, ans, &alen, &q, sizeof(q)) == -1) { 741 return -1; 742 } 743 744 for (i = 0; i < alen/sizeof(ans[0]); i++) 745 if (strcmp("fstypes", ans[i].sysctl_name) == 0) 746 break; 747 if (i == alen/sizeof(ans[0])) { 748 errno = ENXIO; 749 return -1; 750 } 751 752 mib[0] = CTL_VFS; 753 mib[1] = VFS_GENERIC; 754 mib[2] = ans[i].sysctl_num; 755 756 if (rump_sys___sysctl(mib, 3, buf, &buflen, NULL, 0) == -1) { 757 return -1; 758 } 759 760 return buflen; 761 } 762 763 /* 764 * Utilities 765 */ 766 int 767 ukfs_util_builddirs(struct ukfs *ukfs, const char *pathname, mode_t mode) 768 { 769 char *f1, *f2; 770 int rv; 771 mode_t mask; 772 bool end; 773 774 /*ukfs_umask((mask = ukfs_umask(0)));*/ 775 umask((mask = umask(0))); 776 777 f1 = f2 = strdup(pathname); 778 if (f1 == NULL) { 779 errno = ENOMEM; 780 return -1; 781 } 782 783 end = false; 784 for (;;) { 785 /* find next component */ 786 f2 += strspn(f2, "/"); 787 f2 += strcspn(f2, "/"); 788 if (*f2 == '\0') 789 end = true; 790 else 791 *f2 = '\0'; 792 793 rv = ukfs_mkdir(ukfs, f1, mode & ~mask); 794 if (errno == EEXIST) 795 rv = 0; 796 797 if (rv == -1 || *f2 != '\0' || end) 798 break; 799 800 *f2 = '/'; 801 } 802 803 free(f1); 804 805 return rv; 806 } 807
Indexes created Wed Sep 24 02:09:48 GMT 2025