diff options
Diffstat (limited to 'sbin/fsck_ffs/utilities.c')
-rw-r--r-- | sbin/fsck_ffs/utilities.c | 631 |
1 files changed, 0 insertions, 631 deletions
diff --git a/sbin/fsck_ffs/utilities.c b/sbin/fsck_ffs/utilities.c index 0e4bde5..c77f410 100644 --- a/sbin/fsck_ffs/utilities.c +++ b/sbin/fsck_ffs/utilities.c @@ -58,637 +58,6 @@ static const char rcsid[] = #include "fsck.h" -long diskreads, totalreads; /* Disk cache statistics */ - -static void rwerror __P((char *mesg, ufs_daddr_t blk)); - -int -ftypeok(dp) - struct dinode *dp; -{ - switch (dp->di_mode & IFMT) { - - case IFDIR: - case IFREG: - case IFBLK: - case IFCHR: - case IFLNK: - case IFSOCK: - case IFIFO: - return (1); - - default: - if (debug) - printf("bad file type 0%o\n", dp->di_mode); - return (0); - } -} - -int -reply(question) - char *question; -{ - int persevere; - char c; - - if (preen) - pfatal("INTERNAL ERROR: GOT TO reply()"); - persevere = !strcmp(question, "CONTINUE"); - printf("\n"); - if (!persevere && (nflag || fswritefd < 0)) { - printf("%s? no\n\n", question); - resolved = 0; - return (0); - } - if (yflag || (persevere && nflag)) { - printf("%s? yes\n\n", question); - return (1); - } - do { - printf("%s? [yn] ", question); - (void) fflush(stdout); - c = getc(stdin); - while (c != '\n' && getc(stdin) != '\n') { - if (feof(stdin)) { - resolved = 0; - return (0); - } - } - } while (c != 'y' && c != 'Y' && c != 'n' && c != 'N'); - printf("\n"); - if (c == 'y' || c == 'Y') - return (1); - resolved = 0; - return (0); -} - -/* - * Look up state information for an inode. - */ -struct inostat * -inoinfo(inum) - ino_t inum; -{ - static struct inostat unallocated = { USTATE, 0, 0 }; - struct inostatlist *ilp; - int iloff; - - if (inum > maxino) - errx(EEXIT, "inoinfo: inumber %d out of range", inum); - ilp = &inostathead[inum / sblock.fs_ipg]; - iloff = inum % sblock.fs_ipg; - if (iloff >= ilp->il_numalloced) - return (&unallocated); - return (&ilp->il_stat[iloff]); -} - -/* - * Malloc buffers and set up cache. - */ -void -bufinit() -{ - register struct bufarea *bp; - long bufcnt, i; - char *bufp; - - pbp = pdirbp = (struct bufarea *)0; - bufp = malloc((unsigned int)sblock.fs_bsize); - if (bufp == 0) - errx(EEXIT, "cannot allocate buffer pool"); - cgblk.b_un.b_buf = bufp; - initbarea(&cgblk); - bufhead.b_next = bufhead.b_prev = &bufhead; - bufcnt = MAXBUFSPACE / sblock.fs_bsize; - if (bufcnt < MINBUFS) - bufcnt = MINBUFS; - for (i = 0; i < bufcnt; i++) { - bp = (struct bufarea *)malloc(sizeof(struct bufarea)); - bufp = malloc((unsigned int)sblock.fs_bsize); - if (bp == NULL || bufp == NULL) { - if (i >= MINBUFS) - break; - errx(EEXIT, "cannot allocate buffer pool"); - } - bp->b_un.b_buf = bufp; - bp->b_prev = &bufhead; - bp->b_next = bufhead.b_next; - bufhead.b_next->b_prev = bp; - bufhead.b_next = bp; - initbarea(bp); - } - bufhead.b_size = i; /* save number of buffers */ -} - -/* - * Manage a cache of directory blocks. - */ -struct bufarea * -getdatablk(blkno, size) - ufs_daddr_t blkno; - long size; -{ - register struct bufarea *bp; - - for (bp = bufhead.b_next; bp != &bufhead; bp = bp->b_next) - if (bp->b_bno == fsbtodb(&sblock, blkno)) - goto foundit; - for (bp = bufhead.b_prev; bp != &bufhead; bp = bp->b_prev) - if ((bp->b_flags & B_INUSE) == 0) - break; - if (bp == &bufhead) - errx(EEXIT, "deadlocked buffer pool"); - getblk(bp, blkno, size); - /* fall through */ -foundit: - totalreads++; - bp->b_prev->b_next = bp->b_next; - bp->b_next->b_prev = bp->b_prev; - bp->b_prev = &bufhead; - bp->b_next = bufhead.b_next; - bufhead.b_next->b_prev = bp; - bufhead.b_next = bp; - bp->b_flags |= B_INUSE; - return (bp); -} - -void -getblk(bp, blk, size) - register struct bufarea *bp; - ufs_daddr_t blk; - long size; -{ - ufs_daddr_t dblk; - - dblk = fsbtodb(&sblock, blk); - if (bp->b_bno != dblk) { - flush(fswritefd, bp); - diskreads++; - bp->b_errs = bread(fsreadfd, bp->b_un.b_buf, dblk, size); - bp->b_bno = dblk; - bp->b_size = size; - } -} - -void -flush(fd, bp) - int fd; - register struct bufarea *bp; -{ - register int i, j; - - if (!bp->b_dirty) - return; - if (bp->b_errs != 0) - pfatal("WRITING %sZERO'ED BLOCK %d TO DISK\n", - (bp->b_errs == bp->b_size / dev_bsize) ? "" : "PARTIALLY ", - bp->b_bno); - bp->b_dirty = 0; - bp->b_errs = 0; - bwrite(fd, bp->b_un.b_buf, bp->b_bno, (long)bp->b_size); - if (bp != &sblk) - return; - for (i = 0, j = 0; i < sblock.fs_cssize; i += sblock.fs_bsize, j++) { - bwrite(fswritefd, (char *)sblock.fs_csp[j], - fsbtodb(&sblock, sblock.fs_csaddr + j * sblock.fs_frag), - sblock.fs_cssize - i < sblock.fs_bsize ? - sblock.fs_cssize - i : sblock.fs_bsize); - } -} - -static void -rwerror(mesg, blk) - char *mesg; - ufs_daddr_t blk; -{ - - if (preen == 0) - printf("\n"); - pfatal("CANNOT %s: BLK %ld", mesg, blk); - if (reply("CONTINUE") == 0) - exit(EEXIT); -} - -void -ckfini(markclean) - int markclean; -{ - register struct bufarea *bp, *nbp; - int ofsmodified, cnt = 0; - - if (fswritefd < 0) { - (void)close(fsreadfd); - return; - } - flush(fswritefd, &sblk); - if (havesb && sblk.b_bno != SBOFF / dev_bsize && - !preen && reply("UPDATE STANDARD SUPERBLOCK")) { - sblk.b_bno = SBOFF / dev_bsize; - sbdirty(); - flush(fswritefd, &sblk); - } - flush(fswritefd, &cgblk); - free(cgblk.b_un.b_buf); - for (bp = bufhead.b_prev; bp && bp != &bufhead; bp = nbp) { - cnt++; - flush(fswritefd, bp); - nbp = bp->b_prev; - free(bp->b_un.b_buf); - free((char *)bp); - } - if (bufhead.b_size != cnt) - errx(EEXIT, "panic: lost %d buffers", bufhead.b_size - cnt); - pbp = pdirbp = (struct bufarea *)0; - if (sblock.fs_clean != markclean) { - sblock.fs_clean = markclean; - sbdirty(); - ofsmodified = fsmodified; - flush(fswritefd, &sblk); - fsmodified = ofsmodified; - if (!preen) { - printf("\n***** FILE SYSTEM MARKED %s *****\n", - markclean ? "CLEAN" : "DIRTY"); - if (!markclean) - rerun = 1; - } - } else if (!preen && !markclean) { - printf("\n***** FILE SYSTEM STILL DIRTY *****\n"); - rerun = 1; - } - if (debug) - printf("cache missed %ld of %ld (%d%%)\n", diskreads, - totalreads, (int)(diskreads * 100 / totalreads)); - (void)close(fsreadfd); - (void)close(fswritefd); -} - -int -bread(fd, buf, blk, size) - int fd; - char *buf; - ufs_daddr_t blk; - long size; -{ - char *cp; - int i, errs; - off_t offset; - - offset = blk; - offset *= dev_bsize; - if (lseek(fd, offset, 0) < 0) - rwerror("SEEK", blk); - else if (read(fd, buf, (int)size) == size) - return (0); - rwerror("READ", blk); - if (lseek(fd, offset, 0) < 0) - rwerror("SEEK", blk); - errs = 0; - memset(buf, 0, (size_t)size); - printf("THE FOLLOWING DISK SECTORS COULD NOT BE READ:"); - for (cp = buf, i = 0; i < size; i += secsize, cp += secsize) { - if (read(fd, cp, (int)secsize) != secsize) { - (void)lseek(fd, offset + i + secsize, 0); - if (secsize != dev_bsize && dev_bsize != 1) - printf(" %ld (%ld),", - (blk * dev_bsize + i) / secsize, - blk + i / dev_bsize); - else - printf(" %ld,", blk + i / dev_bsize); - errs++; - } - } - printf("\n"); - if (errs) - resolved = 0; - return (errs); -} - -void -bwrite(fd, buf, blk, size) - int fd; - char *buf; - ufs_daddr_t blk; - long size; -{ - int i; - char *cp; - off_t offset; - - if (fd < 0) - return; - offset = blk; - offset *= dev_bsize; - if (lseek(fd, offset, 0) < 0) - rwerror("SEEK", blk); - else if (write(fd, buf, (int)size) == size) { - fsmodified = 1; - return; - } - resolved = 0; - rwerror("WRITE", blk); - if (lseek(fd, offset, 0) < 0) - rwerror("SEEK", blk); - printf("THE FOLLOWING SECTORS COULD NOT BE WRITTEN:"); - for (cp = buf, i = 0; i < size; i += dev_bsize, cp += dev_bsize) - if (write(fd, cp, (int)dev_bsize) != dev_bsize) { - (void)lseek(fd, offset + i + dev_bsize, 0); - printf(" %ld,", blk + i / dev_bsize); - } - printf("\n"); - return; -} - -/* - * allocate a data block with the specified number of fragments - */ -ufs_daddr_t -allocblk(frags) - long frags; -{ - int i, j, k, cg, baseblk; - struct cg *cgp = &cgrp; - - if (frags <= 0 || frags > sblock.fs_frag) - return (0); - for (i = 0; i < maxfsblock - sblock.fs_frag; i += sblock.fs_frag) { - for (j = 0; j <= sblock.fs_frag - frags; j++) { - if (testbmap(i + j)) - continue; - for (k = 1; k < frags; k++) - if (testbmap(i + j + k)) - break; - if (k < frags) { - j += k; - continue; - } - cg = dtog(&sblock, i + j); - getblk(&cgblk, cgtod(&sblock, cg), sblock.fs_cgsize); - if (!cg_chkmagic(cgp)) - pfatal("CG %d: BAD MAGIC NUMBER\n", cg); - baseblk = dtogd(&sblock, i + j); - for (k = 0; k < frags; k++) { - setbmap(i + j + k); - clrbit(cg_blksfree(cgp), baseblk + k); - } - n_blks += frags; - if (frags == sblock.fs_frag) - cgp->cg_cs.cs_nbfree--; - else - cgp->cg_cs.cs_nffree -= frags; - cgdirty(); - return (i + j); - } - } - return (0); -} - -/* - * Free a previously allocated block - */ -void -freeblk(blkno, frags) - ufs_daddr_t blkno; - long frags; -{ - struct inodesc idesc; - - idesc.id_blkno = blkno; - idesc.id_numfrags = frags; - (void)pass4check(&idesc); -} - -/* - * Find a pathname - */ -void -getpathname(namebuf, curdir, ino) - char *namebuf; - ino_t curdir, ino; -{ - int len; - register char *cp; - struct inodesc idesc; - static int busy = 0; - - if (curdir == ino && ino == ROOTINO) { - (void)strcpy(namebuf, "/"); - return; - } - if (busy || - (inoinfo(curdir)->ino_state != DSTATE && - inoinfo(curdir)->ino_state != DFOUND)) { - (void)strcpy(namebuf, "?"); - return; - } - busy = 1; - memset(&idesc, 0, sizeof(struct inodesc)); - idesc.id_type = DATA; - idesc.id_fix = IGNORE; - cp = &namebuf[MAXPATHLEN - 1]; - *cp = '\0'; - if (curdir != ino) { - idesc.id_parent = curdir; - goto namelookup; - } - while (ino != ROOTINO) { - idesc.id_number = ino; - idesc.id_func = findino; - idesc.id_name = ".."; - if ((ckinode(ginode(ino), &idesc) & FOUND) == 0) - break; - namelookup: - idesc.id_number = idesc.id_parent; - idesc.id_parent = ino; - idesc.id_func = findname; - idesc.id_name = namebuf; - if ((ckinode(ginode(idesc.id_number), &idesc)&FOUND) == 0) - break; - len = strlen(namebuf); - cp -= len; - memmove(cp, namebuf, (size_t)len); - *--cp = '/'; - if (cp < &namebuf[MAXNAMLEN]) - break; - ino = idesc.id_number; - } - busy = 0; - if (ino != ROOTINO) - *--cp = '?'; - memmove(namebuf, cp, (size_t)(&namebuf[MAXPATHLEN] - cp)); -} - -void -catch(sig) - int sig; -{ - if (!doinglevel2) - ckfini(0); - exit(12); -} - -/* - * When preening, allow a single quit to signal - * a special exit after filesystem checks complete - * so that reboot sequence may be interrupted. - */ -void -catchquit(sig) - int sig; -{ - printf("returning to single-user after filesystem check\n"); - returntosingle = 1; - (void)signal(SIGQUIT, SIG_DFL); -} - -/* - * Ignore a single quit signal; wait and flush just in case. - * Used by child processes in preen. - */ -void -voidquit(sig) - int sig; -{ - - sleep(1); - (void)signal(SIGQUIT, SIG_IGN); - (void)signal(SIGQUIT, SIG_DFL); -} - -/* - * determine whether an inode should be fixed. - */ -int -dofix(idesc, msg) - register struct inodesc *idesc; - char *msg; -{ - - switch (idesc->id_fix) { - - case DONTKNOW: - if (idesc->id_type == DATA) - direrror(idesc->id_number, msg); - else - pwarn(msg); - if (preen) { - printf(" (SALVAGED)\n"); - idesc->id_fix = FIX; - return (ALTERED); - } - if (reply("SALVAGE") == 0) { - idesc->id_fix = NOFIX; - return (0); - } - idesc->id_fix = FIX; - return (ALTERED); - - case FIX: - return (ALTERED); - - case NOFIX: - case IGNORE: - return (0); - - default: - errx(EEXIT, "UNKNOWN INODESC FIX MODE %d", idesc->id_fix); - } - /* NOTREACHED */ - return (0); -} - -#if __STDC__ -#include <stdarg.h> -#else -#include <varargs.h> -#endif - -/* - * An unexpected inconsistency occured. - * Die if preening or filesystem is running with soft dependency protocol, - * otherwise just print message and continue. - */ -void -#if __STDC__ -pfatal(const char *fmt, ...) -#else -pfatal(fmt, va_alist) - char *fmt; - va_dcl -#endif -{ - va_list ap; -#if __STDC__ - va_start(ap, fmt); -#else - va_start(ap); -#endif - if (!preen) { - (void)vfprintf(stderr, fmt, ap); - va_end(ap); - if (usedsoftdep) - (void)fprintf(stderr, - "\nUNEXPECTED SOFT UPDATE INCONSISTENCY\n"); - return; - } - if (cdevname == NULL) - cdevname = "fsck"; - (void)fprintf(stderr, "%s: ", cdevname); - (void)vfprintf(stderr, fmt, ap); - (void)fprintf(stderr, - "\n%s: UNEXPECTED%sINCONSISTENCY; RUN fsck MANUALLY.\n", - cdevname, usedsoftdep ? " SOFT UPDATE " : " "); - ckfini(0); - exit(EEXIT); -} - -/* - * Pwarn just prints a message when not preening or running soft dependency - * protocol, or a warning (preceded by filename) when preening. - */ -void -#if __STDC__ -pwarn(const char *fmt, ...) -#else -pwarn(fmt, va_alist) - char *fmt; - va_dcl -#endif -{ - va_list ap; -#if __STDC__ - va_start(ap, fmt); -#else - va_start(ap); -#endif - if (preen) - (void)fprintf(stderr, "%s: ", cdevname); - (void)vfprintf(stderr, fmt, ap); - va_end(ap); -} - -/* - * Stub for routines from kernel. - */ -void -#if __STDC__ -panic(const char *fmt, ...) -#else -panic(fmt, va_alist) - char *fmt; - va_dcl -#endif -{ - va_list ap; -#if __STDC__ - va_start(ap, fmt); -#else - va_start(ap); -#endif - pfatal("INTERNAL INCONSISTENCY:"); - (void)vfprintf(stderr, fmt, ap); - va_end(ap); - exit(EEXIT); -} char * blockcheck(origname) |