2 * Copyright (c) 1980, 1986 The Regents of the University of California.
5 * Redistribution and use in source and binary forms are permitted
6 * provided that the above copyright notice and this paragraph are
7 * duplicated in all such forms and that any documentation,
8 * advertising materials, and other materials related to such
9 * distribution and use acknowledge that the software was developed
10 * by the University of California, Berkeley. The name of the
11 * University may not be used to endorse or promote products derived
12 * from this software without specific prior written permission.
13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
18 #include <afsconfig.h>
19 #include <afs/param.h>
24 #include <sys/param.h>
25 #define VICE /* allow us to put our changes in at will */
28 #include <sys/vnode.h>
29 #include <sys/mount.h>
30 #include <ufs/inode.h>
38 #else /* AFS_OSF_ENV */
39 #ifdef AFS_VFSINCL_ENV
40 #include <sys/vnode.h>
45 #include <sys/fs/ufs_inode.h>
46 #include <sys/fs/ufs_fs.h>
48 #include <sys/fs/ufs_fsdir.h>
50 #include <sys/fs/ufs_mount.h>
52 #include <ufs/inode.h>
54 #include <ufs/fsdir.h>
56 #else /* AFS_VFSINCL_ENV */
57 #include <sys/inode.h>
60 #define LONGFILENAMES 1
61 #include <sys/sysmacros.h>
63 #include <sys/signal.h>
70 #endif /* AFS_VFSINCL_ENV */
71 #endif /* AFS_OSF_ENV */
77 #if defined(AFS_HPUX101_ENV)
81 #if defined(AFS_SUN_ENV) || defined(AFS_OSF_ENV)
87 long diskreads, totalreads; /* Disk cache statistics */
88 #if !defined(AFS_HPUX101_ENV)
92 #if defined(AFS_SUN_ENV) || defined(AFS_DEC_ENV)
99 #include <sys/mntent.h>
100 #include <sys/mnttab.h>
101 #include <sys/stat.h>
102 #include <sys/vfstab.h>
110 switch (dp->di_mode & IFMT) {
132 printf("bad file type 0%o\n", dp->di_mode);
147 pfatal("INTERNAL ERROR: GOT TO reply()");
148 persevere = !strcmp(question, "CONTINUE");
150 if (!persevere && (nflag || fswritefd < 0)) {
151 printf("%s? no\n\n", question);
152 #if defined(AFS_SUN_ENV) || defined(AFS_DEC_ENV)
153 iscorrupt = 1; /* known to be corrupt */
157 if (yflag || (persevere && nflag)) {
158 printf("%s? yes\n\n", question);
162 printf("%s? [yn] ", question);
163 (void)fflush(stdout);
165 while (c != '\n' && getc(stdin) != '\n')
168 } while (c != 'y' && c != 'Y' && c != 'n' && c != 'N');
170 if (c == 'y' || c == 'Y')
175 #if defined(AFS_SUN_ENV) || defined(AFS_DEC_ENV)
176 iscorrupt = 1; /* known to be corrupt */
182 * Malloc buffers and set up cache.
186 register struct bufarea *bp;
190 bufp = malloc((unsigned int)sblock.fs_bsize);
192 errexit("cannot allocate buffer pool\n");
193 cgblk.b_un.b_buf = bufp;
195 bufhead.b_next = bufhead.b_prev = &bufhead;
196 bufcnt = MAXBUFSPACE / sblock.fs_bsize;
197 if (bufcnt < MINBUFS)
199 for (i = 0; i < bufcnt; i++) {
200 bp = (struct bufarea *)malloc(sizeof(struct bufarea));
201 bufp = malloc((unsigned int)sblock.fs_bsize);
202 if (bp == NULL || bufp == NULL) {
205 errexit("cannot allocate buffer pool\n");
207 bp->b_un.b_buf = bufp;
208 bp->b_prev = &bufhead;
209 bp->b_next = bufhead.b_next;
210 bufhead.b_next->b_prev = bp;
214 bufhead.b_size = i; /* save number of buffers */
221 * Manage a cache of directory blocks.
224 getdatablk(blkno, size)
228 register struct bufarea *bp;
230 for (bp = bufhead.b_next; bp != &bufhead; bp = bp->b_next)
231 if (bp->b_bno == fsbtodb(&sblock, blkno))
233 for (bp = bufhead.b_prev; bp != &bufhead; bp = bp->b_prev)
234 if ((bp->b_flags & B_INUSE) == 0)
237 errexit("deadlocked buffer pool\n");
238 getblk(bp, blkno, size);
242 bp->b_prev->b_next = bp->b_next;
243 bp->b_next->b_prev = bp->b_prev;
244 bp->b_prev = &bufhead;
245 bp->b_next = bufhead.b_next;
246 bufhead.b_next->b_prev = bp;
248 bp->b_flags |= B_INUSE;
253 getblk(bp, blk, size)
254 register struct bufarea *bp;
260 dblk = fsbtodb(&sblock, blk);
261 if (bp->b_bno == dblk)
263 flush(fswritefd, bp);
265 bp->b_errs = bread(fsreadfd, bp->b_un.b_buf, dblk, size);
273 register struct bufarea *bp;
281 if (bp->b_errs != 0) {
282 pfatal("WRITING %sZERO'ED BLOCK %d TO DISK\n",
283 (bp->b_errs == bp->b_size / dev_bsize) ? "" : "PARTIALLY ",
291 bwrite(fd, bp->b_un.b_buf, bp->b_bno, (long)bp->b_size);
294 #if defined(AFS_HPUX101_ENV)
295 #if defined(AFS_HPUX110_ENV)
296 /* jpm: Need a fix here */
298 #else /* AFS_HPUX110_ENV */
300 (fswritefd, (char *)sblock.fs_csp[0],
301 fsbtodb(&sblock, sblock.fs_csaddr), fragroundup(&sblock,
302 sblock.fs_cssize)) ==
304 #endif /* else AFS_HPUX110_ENV */
307 ("\nUnable to write to cylinder group summary area (fs_csaddr)\n");
308 printf("\tDisk write error at block %u\n",
309 fsbtodb(&sblock, sblock.fs_csaddr));
312 #if defined(AFS_SUN56_ENV)
313 sip = (caddr_t) sblock.fs_u.fs_csp;
314 for (i = 0, j = 0; i < sblock.fs_cssize; i += sblock.fs_bsize, j++) {
316 sblock.fs_cssize - i <
317 sblock.fs_bsize ? sblock.fs_cssize - i : sblock.fs_bsize;
318 bwrite(fswritefd, sip,
319 fsbtodb(&sblock, sblock.fs_csaddr + j * sblock.fs_frag), size);
323 for (i = 0, j = 0; i < sblock.fs_cssize; i += sblock.fs_bsize, j++) {
324 bwrite(fswritefd, (char *)sblock.fs_csp[j],
325 fsbtodb(&sblock, sblock.fs_csaddr + j * sblock.fs_frag),
326 sblock.fs_cssize - i <
327 sblock.fs_bsize ? sblock.fs_cssize - i : sblock.fs_bsize);
329 #endif /* AFS_SUN56_ENV */
330 #endif /* AFS_HPUX101_ENV */
340 pfatal("CANNOT %s: BLK %ld", mesg, blk);
341 if (reply("CONTINUE") == 0)
342 errexit("Program terminated\n");
347 register struct bufarea *bp, *nbp;
350 flush(fswritefd, &sblk);
352 if (havesb && sblk.b_bno != SBOFF / dev_bsize && !preen
353 && reply("UPDATE STANDARD SUPERBLOCK")) {
354 sblk.b_bno = SBOFF / dev_bsize;
355 #else /* AFS_NEWCG_ENV */
356 if (havesb && sblk.b_bno != SBLOCK && !preen
357 && reply("UPDATE STANDARD SUPERBLOCK")) {
359 #endif /* AFS_NEWCG_ENV */
361 flush(fswritefd, &sblk);
363 flush(fswritefd, &cgblk);
364 if (cgblk.b_un.b_buf) {
365 free(cgblk.b_un.b_buf);
366 cgblk.b_un.b_buf = NULL;
368 for (bp = bufhead.b_prev; bp != &bufhead; bp = nbp) {
370 flush(fswritefd, bp);
372 free(bp->b_un.b_buf);
378 if (bufhead.b_size != cnt)
379 errexit("Panic: lost %d buffers\n", bufhead.b_size - cnt);
381 printf("cache missed %d of %d (%d%%)\n", diskreads, totalreads,
382 diskreads * 100 / totalreads);
383 (void)close(fsreadfd);
384 (void)close(fswritefd);
387 #if !defined(AFS_HPUX101_ENV)
388 bread(fd, buf, blk, size)
397 offset_t offset = (offset_t) blk << DEV_BSHIFT;
402 /* To fix a stripping related bug?? */
403 if (lseek(fd, blk * dev_bsize, 0) == -1)
406 if (llseek(fd, offset, 0) < 0)
408 if (lseek(fd, blk * dev_bsize, 0) < 0)
411 rwerror("SEEK", blk);
412 else if (read(fd, buf, (int)size) == size)
414 rwerror("READ", blk);
416 /* To fix a stripping related bug?? */
417 if (lseek(fd, blk * dev_bsize, 0) == -1)
420 if (llseek(fd, offset, 0) < 0)
422 if (lseek(fd, blk * dev_bsize, 0) < 0)
425 rwerror("SEEK", blk);
427 memset(buf, 0, (int)size);
428 printf("THE FOLLOWING DISK SECTORS COULD NOT BE READ:");
430 for (cp = buf, i = 0; i < btodb(size); i++, cp += DEV_BSIZE) {
431 addr = (offset_t) (blk + i) << DEV_BSHIFT;
432 if (llseek(fd, addr, SEEK_CUR) < 0 || read(fd, cp, (int)secsize) < 0) {
433 printf(" %d", blk + i);
435 for (cp = buf, i = 0; i < size; i += secsize, cp += secsize) {
436 if (read(fd, cp, (int)secsize) < 0) {
437 lseek(fd, blk * dev_bsize + i + secsize, 0);
438 if (secsize != dev_bsize && dev_bsize != 1)
439 printf(" %d (%d),", (blk * dev_bsize + i) / secsize,
440 blk + i / dev_bsize);
442 printf(" %d,", blk + i / dev_bsize);
451 bwrite(fd, buf, blk, size)
460 offset_t offset = (offset_t) blk << DEV_BSHIFT;
465 sprintf(msg, "WARNING: Attempt to write illegal blkno %d on %s\n",
476 /* To fix a stripping related bug?? */
477 if (lseek(fd, blk * dev_bsize, 0) == -1)
480 if (llseek(fd, offset, 0) < 0)
482 if (lseek(fd, blk * dev_bsize, 0) < 0)
485 rwerror("SEEK", blk);
486 else if (write(fd, buf, (int)size) == size) {
490 rwerror("WRITE", blk);
492 /* To fix a stripping related bug?? */
493 if (lseek(fd, blk * dev_bsize, 0) == -1)
496 if (llseek(fd, offset, 0) < 0)
498 if (lseek(fd, blk * dev_bsize, 0) < 0)
501 rwerror("SEEK", blk);
502 printf("THE FOLLOWING SECTORS COULD NOT BE WRITTEN:");
504 for (cp = buf, i = 0; i < btodb(size); i++, cp += DEV_BSIZE) {
506 addr = (offset_t) (blk + i) << DEV_BSHIFT;
507 if (llseek(fd, addr, SEEK_CUR) < 0
508 || (n = write(fd, cp, DEV_BSIZE)) < 0) {
509 printf(" %d", blk + i);
516 for (cp = buf, i = 0; i < size; i += dev_bsize, cp += dev_bsize)
517 if (write(fd, cp, (int)dev_bsize) < 0) {
518 lseek(fd, blk * dev_bsize + i + dev_bsize, 0);
519 printf(" %d,", blk + i / dev_bsize);
525 #endif /* AFS_HPUX101_ENV */
527 * allocate a data block with the specified number of fragments
532 register int i, j, k;
534 if (frags <= 0 || frags > sblock.fs_frag)
536 for (i = 0; i < maxfsblock - sblock.fs_frag; i += sblock.fs_frag) {
537 for (j = 0; j <= sblock.fs_frag - frags; j++) {
540 for (k = 1; k < frags; k++)
541 if (testbmap(i + j + k))
547 for (k = 0; k < frags; k++)
557 * Free a previously allocated block
559 freeblk(blkno, frags)
563 struct inodesc idesc;
565 idesc.id_blkno = blkno;
566 idesc.id_numfrags = frags;
573 getpathname(namebuf, curdir, ino)
579 struct inodesc idesc;
580 extern int findname();
582 if (statemap[ino] != DSTATE && statemap[ino] != DFOUND) {
583 strcpy(namebuf, "?");
586 memset((char *)&idesc, 0, sizeof(struct inodesc));
587 idesc.id_type = DATA;
588 cp = &namebuf[BUFSIZ - 1];
591 idesc.id_parent = curdir;
594 while (ino != ROOTINO) {
595 idesc.id_number = ino;
596 idesc.id_func = findino;
597 idesc.id_name = "..";
599 idesc.id_fix = NOFIX;
601 if ((ckinode(ginode(ino), &idesc) & FOUND) == 0)
604 idesc.id_number = idesc.id_parent;
605 idesc.id_parent = ino;
606 idesc.id_func = findname;
607 idesc.id_name = namebuf;
609 idesc.id_fix = NOFIX;
611 if ((ckinode(ginode(idesc.id_number), &idesc) & FOUND) == 0)
613 len = strlen(namebuf);
615 if (cp < &namebuf[MAXNAMLEN])
617 memcpy(cp, namebuf, len);
619 ino = idesc.id_number;
621 if (ino != ROOTINO) {
622 strcpy(namebuf, "?");
625 memcpy(namebuf, cp, &namebuf[BUFSIZ] - cp);
640 * When preening, allow a single quit to signal
641 * a special exit after filesystem checks complete
642 * so that reboot sequence may be interrupted.
647 extern returntosingle;
649 printf("returning to single-user after filesystem check\n");
651 (void)signal(SIGQUIT, SIG_DFL);
655 * Ignore a single quit signal; wait and flush just in case.
656 * Used by child processes in preen.
663 (void)signal(SIGQUIT, SIG_IGN);
664 (void)signal(SIGQUIT, SIG_DFL);
668 * determine whether an inode should be fixed.
671 register struct inodesc *idesc;
675 switch (idesc->id_fix) {
678 if (idesc->id_type == DATA)
679 direrror(idesc->id_number, msg);
683 printf(" (SALVAGED)\n");
687 if (reply("SALVAGE") == 0) {
688 idesc->id_fix = NOFIX;
701 errexit("UNKNOWN INODESC FIX MODE %d\n", idesc->id_fix);
707 errexit(s1, s2, s3, s4)
711 printf(s1, s2, s3, s4);
720 * An unexpected inconsistency occured.
721 * Die if preening, otherwise just print message and continue.
724 pfatal(s, a1, a2, a3)
729 printf("%s: ", devname);
730 printf(s, a1, a2, a3);
732 printf("%s: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY.\n", devname);
739 printf(s, a1, a2, a3);
743 * Pwarn just prints a message when not preening,
744 * or a warning (preceded by filename) when preening.
747 pwarn(s, a1, a2, a3, a4, a5, a6)
749 long a1, a2, a3, a4, a5, a6;
752 printf("%s: ", devname);
753 printf(s, a1, a2, a3, a4, a5, a6);
757 * Pwarn just prints a message when not preening,
758 * or a warning (preceded by filename) when preening.
761 pinfo(s, a1, a2, a3, a4, a5, a6)
763 long a1, a2, a3, a4, a5, a6;
766 printf("%s: ", devname);
767 printf(s, a1, a2, a3, a4, a5, a6);
772 * Stub for routines from kernel.
778 pfatal("INTERNAL INCONSISTENCY:");
783 #if defined(AFS_SUN_ENV) && !defined(AFS_SUN3_ENV)
790 if ((iscorrupt == 0) && (isdirty == 0))
792 if ((sblock.fs_clean != FSSTABLE) && (sblock.fs_clean != FSCLEAN))
795 if (FSOKAY != (sblock.fs_state + sblock.fs_time))
797 if (FSOKAY != (fs_get_state(&sblock) + sblock.fs_time))
801 sprintf(s, "WARNING: inconsistencies detected on `%s' filesystem %s",
802 sblock.fs_clean == FSSTABLE ? "stable" : "clean", devname);
808 struct bufarea cleanbuf;
811 unsigned int fsclean;
812 #if defined(AFS_SUN56_ENV)
817 /* set fsclean to its appropriate value */
818 fsclean = sblock.fs_clean;
820 if (FSOKAY != (sblock.fs_state + sblock.fs_time))
822 if (FSOKAY != (fs_get_state(&sblock) + sblock.fs_time))
826 /* if necessary, update fs_clean and fs_state */
843 /* if fs_clean and fs_state are ok, do nothing */
844 if ((sblock.fs_clean == fsclean) &&
846 (FSOKAY == (sblock.fs_state + sblock.fs_time)))
848 (FSOKAY == (fs_get_state(&sblock) + sblock.fs_time)))
851 sblock.fs_clean = fsclean;
853 sblock.fs_state = sblock.fs_time;
855 fs_set_state(&sblock, sblock.fs_time);
857 /* if superblock can't be written, return */
860 /* read private copy of superblock, update clean flag, and write it */
863 #if defined(AFS_SUN56_ENV)
864 sblkoff = (OFF_T) (bno) << DEV_BSHIFT;
865 if (llseek(fsreadfd, sblkoff, 0) == -1)
868 if (lseek(fsreadfd, (off_t) dbtob(bno), 0) == -1)
871 if ((cleanbuf.b_un.b_buf = malloc(size)) == NULL)
872 errexit("out of memory");
873 if (read(fsreadfd, cleanbuf.b_un.b_buf, (int)size) != size)
875 cleanbuf.b_un.b_fs->fs_clean = sblock.fs_clean;
877 cleanbuf.b_un.b_fs->fs_state = sblock.fs_state;
879 fs_set_state(cleanbuf.b_un.b_fs, fs_get_state(&sblock));
881 cleanbuf.b_un.b_fs->fs_time = sblock.fs_time;
882 #if defined(AFS_SUN56_ENV)
883 if (llseek(fswritefd, sblkoff, 0) == -1)
886 if (lseek(fswritefd, (off_t) dbtob(bno), 0) == -1)
889 if (write(fswritefd, cleanbuf.b_un.b_buf, (int)size) != size)
898 if (FSOKAY != (sblock.fs_state + sblock.fs_time))
900 if (FSOKAY != (fs_get_state(&sblock) + sblock.fs_time))
905 switch (sblock.fs_clean) {
919 pwarn("is %s.\n", s);
921 printf("** %s is %s.\n", devname, s);
928 register struct vfstab *vfs;
932 static char *tmpopts;
934 if (vfs->vfs_mntopts == NULL)
937 tmpopts = (char *)calloc(256, sizeof(char));
941 strncpy(tmpopts, vfs->vfs_mntopts, (sizeof(tmpopts) - 1));
944 for (; *f; f = mntopt(&opts)) {
945 if (strncmp(opt, f, strlen(opt)) == 0)
946 return (f - tmpopts + vfs->vfs_mntopts);
956 struct vfstab vfsbuf;
958 char *blkname, *unrawname();
960 vfstab = fopen(VFSTAB, "r");
961 if (vfstab == NULL) {
962 printf("can't open %s\n", VFSTAB);
965 blkname = unrawname(name);
966 if ((getvfsspec(vfstab, &vfsbuf, blkname) == 0)
967 && (vfsbuf.vfs_fstype != NULL)
968 && (strcmp(vfsbuf.vfs_fstype, MNTTYPE_UFS) == 0)
969 && (hasvfsopt(&vfsbuf, MNTOPT_RO))) {
982 struct stat device_stat, mount_stat;
983 char *blkname, *unrawname();
985 mnttab = fopen(MNTTAB, "r");
986 if (mnttab == NULL) {
987 printf("can't open %s\n", MNTTAB);
990 blkname = unrawname(name);
991 while ((getmntent(mnttab, &mnt)) == NULL) {
992 if (strcmp(mnt.mnt_fstype, MNTTYPE_UFS) != 0) {
995 if (strcmp(blkname, mnt.mnt_special) == 0) {
996 stat(mnt.mnt_mountp, &mount_stat);
997 stat(mnt.mnt_special, &device_stat);
998 if (device_stat.st_rdev == mount_stat.st_dev) {
999 if (hasmntopt(&mnt, MNTOPT_RO) != 0)
1000 found = 2; /* mounted as RO */
1002 found = 1; /* mounted as R/W */
1013 #if defined(AFS_HPUX101_ENV)
1016 #include <sys/stat.h>
1017 #include <sys/fcntl.h>
1021 bread(fd, buf, blk, size)
1030 switch (seek_options) {
1031 case BLKSEEK_ENABLED:
1035 case BLKSEEK_NOT_ENABLED: /* File */
1036 #if defined(AFS_HPUX102_ENV)
1037 lseek_offset = dbtoo(blk);
1039 lseek_offset = dbtob(blk);
1044 rwerror("BLKSEEK", blk);
1046 if (lseek(fd, (off_t) lseek_offset, 0) == (off_t) - 1)
1047 rwerror("SEEK", blk);
1048 else if (read(fd, buf, (int)size) == size)
1050 rwerror("READ", blk);
1054 bwrite(fd, buf, blk, size)
1065 switch (seek_options) {
1066 case BLKSEEK_ENABLED:
1070 case BLKSEEK_NOT_ENABLED: /* File */
1071 #if defined(AFS_HPUX102_ENV)
1072 lseek_offset = dbtoo(blk);
1074 lseek_offset = dbtob(blk);
1079 rwerror("BLKSEEK", blk);
1081 if (lseek(fd, (off_t) lseek_offset, 0) == (off_t) - 1)
1082 rwerror("SEEK", blk);
1083 else if (write(fd, buf, (int)size) == size) {
1087 rwerror("WRITE", blk);
1092 setup_block_seek(fd)
1093 int fd; /* File descriptor */
1095 int flags = 0; /* Flags to/from fcntl() */
1097 return setup_block_seek_2(fd, &flags);
1100 #define set_fserror printf
1103 setup_block_seek_2(fd, cntl_flags)
1104 int fd; /* Input. File descriptor */
1105 int *cntl_flags; /* Returned. Flags from fcntl() */
1107 int flags = 0; /* Flags to/from fcntl() */
1108 off_t lstatus; /* Status from lseek() */
1109 struct stat statarea;
1110 char dummy[MAXBSIZE];
1116 if ((flags = fcntl(fd, F_GETFL)) == -1) {
1117 set_fserror("Cannot get file control flags.");
1118 return (BLKSEEK_PROCESSING_ERROR);
1122 * Check if fd is a non-device file
1125 if (fstat(fd, &statarea) == -1) {
1126 set_fserror("Cannot get status information on file descriptor.");
1127 return (BLKSEEK_PROCESSING_ERROR);
1129 if (((statarea.st_mode & S_IFMT) != S_IFCHR)
1130 && ((statarea.st_mode & S_IFMT) != S_IFBLK)) {
1131 /* Not a device file -- BLKSEEK only works on device files */
1132 *cntl_flags = flags; /* O_BLKSEEK bit never set */
1133 return (BLKSEEK_NOT_ENABLED);
1137 * Set the fd to O_BLKSEEK
1139 if (fcntl(fd, F_SETFL, flags | O_BLKSEEK) == -1) {
1140 set_fserror("Cannot set file control flags.");
1141 return (BLKSEEK_PROCESSING_ERROR);
1143 if (flags & O_WRONLY) {
1144 /* Set lseek to location 0 before returning */
1145 if (lseek(fd, (off_t) 0, SEEK_SET) == (off_t) - 1) {
1146 set_fserror("Cannot lseek the device.");
1147 return (BLKSEEK_PROCESSING_ERROR);
1151 ("File is write only. Cannot Verify O_BLKSEEK mode set.");
1152 *cntl_flags = flags | O_BLKSEEK;
1153 return (BLKSEEK_FILE_WRITEONLY);
1157 * Verify that kernel knows how to do O_BLKSEEK
1159 if (lseek(fd, (off_t) 0, SEEK_SET) == (off_t) - 1) {
1160 set_fserror("Cannot lseek the device.");
1161 return (BLKSEEK_PROCESSING_ERROR);
1163 if (read(fd, &dummy[0], BBSIZE) != BBSIZE) { /* BBSIZE = 8192 */
1164 set_fserror("Cannot read from the device");
1165 return (BLKSEEK_PROCESSING_ERROR);
1168 if ((lstatus = lseek(fd, (off_t) 0, SEEK_CUR)) == (off_t) - 1) {
1169 set_fserror("Cannot lseek the device.");
1170 return (BLKSEEK_PROCESSING_ERROR);
1174 * Set lseek to location 0
1176 if (lseek(fd, (off_t) 0, SEEK_SET) == (off_t) - 1) {
1177 set_fserror("Cannot lseek the device.");
1178 return (BLKSEEK_PROCESSING_ERROR);
1181 if (lstatus == (off_t) (BBSIZE / DEV_BSIZE)) {
1182 *cntl_flags = flags | O_BLKSEEK;
1183 return (BLKSEEK_ENABLED); /* Successfully enabled O_BLKSEEK */
1185 *cntl_flags = flags & (~O_BLKSEEK); /* Turn off O_BLKSEEK bit */
1186 return (BLKSEEK_NOT_ENABLED); /* O_BLKSEEK not enabled */
1189 setup_all_block_seek()
1192 seek_options = setup_block_seek(fsreadfd);
1193 switch (seek_options) {
1194 case BLKSEEK_ENABLED:
1195 case BLKSEEK_NOT_ENABLED:
1198 errexit("setup_block_seek on fsreadfd");
1201 if (fswritefd == -1)
1203 switch (opt = setup_block_seek(fswritefd)) {
1204 case BLKSEEK_FILE_WRITEONLY: /* WO block or char device. */
1205 case BLKSEEK_NOT_ENABLED: /* regular file. */
1206 if (seek_options != opt)
1208 ("seek_options on fsreadfd (%d) and fswritefd (%d) do not match",
1212 errexit("setup_block_seek on fswritefd");
1217 printf("read option = %d write option = %d\n", seek_options, opt);
1222 #endif /* AFS_HPUX101_ENV */