예제 #1
0
파일: pass1.c 프로젝트: tomtor/freebsd
void
pass1(void)
{
    struct inostat *info;
    struct inodesc idesc;
    struct bufarea *cgbp;
    struct cg *cgp;
    ino_t inumber, inosused, mininos;
    ufs2_daddr_t i, cgd;
    u_int8_t *cp;
    int c, rebuildcg;

    badblk = dupblk = lastino = 0;

    /*
     * Set file system reserved blocks in used block map.
     */
    for (c = 0; c < sblock.fs_ncg; c++) {
        cgd = cgdmin(&sblock, c);
        if (c == 0) {
            i = cgbase(&sblock, c);
        } else
            i = cgsblock(&sblock, c);
        for (; i < cgd; i++)
            setbmap(i);
    }
    i = sblock.fs_csaddr;
    cgd = i + howmany(sblock.fs_cssize, sblock.fs_fsize);
    for (; i < cgd; i++)
        setbmap(i);

    /*
     * Find all allocated blocks.
     */
    memset(&idesc, 0, sizeof(struct inodesc));
    idesc.id_func = pass1check;
    n_files = n_blks = 0;
    for (c = 0; c < sblock.fs_ncg; c++) {
        inumber = c * sblock.fs_ipg;
        setinodebuf(inumber);
        cgbp = cgget(c);
        cgp = cgbp->b_un.b_cg;
        rebuildcg = 0;
        if (!check_cgmagic(c, cgbp))
            rebuildcg = 1;
        if (!rebuildcg && sblock.fs_magic == FS_UFS2_MAGIC) {
            inosused = cgp->cg_initediblk;
            if (inosused > sblock.fs_ipg) {
                pfatal(
                    "Too many initialized inodes (%ju > %d) in cylinder group %d\nReset to %d\n",
                    (uintmax_t)inosused,
                    sblock.fs_ipg, c, sblock.fs_ipg);
                inosused = sblock.fs_ipg;
            }
        } else {
            inosused = sblock.fs_ipg;
        }
        if (got_siginfo) {
            printf("%s: phase 1: cyl group %d of %d (%d%%)\n",
                   cdevname, c, sblock.fs_ncg,
                   c * 100 / sblock.fs_ncg);
            got_siginfo = 0;
        }
        if (got_sigalarm) {
            setproctitle("%s p1 %d%%", cdevname,
                         c * 100 / sblock.fs_ncg);
            got_sigalarm = 0;
        }
        /*
         * If we are using soft updates, then we can trust the
         * cylinder group inode allocation maps to tell us which
         * inodes are allocated. We will scan the used inode map
         * to find the inodes that are really in use, and then
         * read only those inodes in from disk.
         */
        if ((preen || inoopt) && usedsoftdep && !rebuildcg) {
            cp = &cg_inosused(cgp)[(inosused - 1) / CHAR_BIT];
            for ( ; inosused > 0; inosused -= CHAR_BIT, cp--) {
                if (*cp == 0)
                    continue;
                for (i = 1 << (CHAR_BIT - 1); i > 0; i >>= 1) {
                    if (*cp & i)
                        break;
                    inosused--;
                }
                break;
            }
            if (inosused < 0)
                inosused = 0;
        }
        /*
         * Allocate inoinfo structures for the allocated inodes.
         */
        inostathead[c].il_numalloced = inosused;
        if (inosused == 0) {
            inostathead[c].il_stat = NULL;
            continue;
        }
        info = Calloc((unsigned)inosused, sizeof(struct inostat));
        if (info == NULL)
            errx(EEXIT, "cannot alloc %u bytes for inoinfo",
                 (unsigned)(sizeof(struct inostat) * inosused));
        inostathead[c].il_stat = info;
        /*
         * Scan the allocated inodes.
         */
        for (i = 0; i < inosused; i++, inumber++) {
            if (inumber < ROOTINO) {
                (void)getnextinode(inumber, rebuildcg);
                continue;
            }
            /*
             * NULL return indicates probable end of allocated
             * inodes during cylinder group rebuild attempt.
             * We always keep trying until we get to the minimum
             * valid number for this cylinder group.
             */
            if (checkinode(inumber, &idesc, rebuildcg) == 0 &&
                    i > cgp->cg_initediblk)
                break;
        }
        /*
         * This optimization speeds up future runs of fsck
         * by trimming down the number of inodes in cylinder
         * groups that formerly had many inodes but now have
         * fewer in use.
         */
        mininos = roundup(inosused + INOPB(&sblock), INOPB(&sblock));
        if (inoopt && !preen && !rebuildcg &&
                sblock.fs_magic == FS_UFS2_MAGIC &&
                cgp->cg_initediblk > 2 * INOPB(&sblock) &&
                mininos < cgp->cg_initediblk) {
            i = cgp->cg_initediblk;
            if (mininos < 2 * INOPB(&sblock))
                cgp->cg_initediblk = 2 * INOPB(&sblock);
            else
                cgp->cg_initediblk = mininos;
            pwarn("CYLINDER GROUP %d: RESET FROM %ju TO %d %s\n",
                  c, i, cgp->cg_initediblk, "VALID INODES");
            dirty(cgbp);
        }
        if (inosused < sblock.fs_ipg)
            continue;
        lastino += 1;
        if (lastino < (c * sblock.fs_ipg))
            inosused = 0;
        else
            inosused = lastino - (c * sblock.fs_ipg);
        if (rebuildcg && inosused > cgp->cg_initediblk &&
                sblock.fs_magic == FS_UFS2_MAGIC) {
            cgp->cg_initediblk = roundup(inosused, INOPB(&sblock));
            pwarn("CYLINDER GROUP %d: FOUND %d VALID INODES\n", c,
                  cgp->cg_initediblk);
        }
        /*
         * If we were not able to determine in advance which inodes
         * were in use, then reduce the size of the inoinfo structure
         * to the size necessary to describe the inodes that we
         * really found.
         */
        if (inumber == lastino)
            continue;
        inostathead[c].il_numalloced = inosused;
        if (inosused == 0) {
            free(inostathead[c].il_stat);
            inostathead[c].il_stat = NULL;
            continue;
        }
        info = Calloc((unsigned)inosused, sizeof(struct inostat));
        if (info == NULL)
            errx(EEXIT, "cannot alloc %u bytes for inoinfo",
                 (unsigned)(sizeof(struct inostat) * inosused));
        memmove(info, inostathead[c].il_stat, inosused * sizeof(*info));
        free(inostathead[c].il_stat);
        inostathead[c].il_stat = info;
    }
예제 #2
0
파일: pass1.c 프로젝트: ajinkya93/OpenBSD
void
pass1(void)
{
	ino_t inumber, inosused, ninosused;
	size_t inospace;
	struct inostat *info;
	int c;
	struct inodesc idesc;
	daddr_t i, cgd;
	u_int8_t *cp;

	/*
	 * Set file system reserved blocks in used block map.
	 */
	for (c = 0; c < sblock.fs_ncg; c++) {
		cgd = cgdmin(&sblock, c);
		if (c == 0)
			i = cgbase(&sblock, c);
		else
			i = cgsblock(&sblock, c);
		for (; i < cgd; i++)
			setbmap(i);
	}
	i = sblock.fs_csaddr;
	cgd = i + howmany(sblock.fs_cssize, sblock.fs_fsize);
	for (; i < cgd; i++)
		setbmap(i);
	/*
	 * Find all allocated blocks.
	 */
	memset(&idesc, 0, sizeof(struct inodesc));
	idesc.id_type = ADDR;
	idesc.id_func = pass1check;
	n_files = n_blks = 0;
	info_inumber = 0;
	info_fn = pass1_info;
	for (c = 0; c < sblock.fs_ncg; c++) {
		inumber = c * sblock.fs_ipg;
		setinodebuf(inumber);
		getblk(&cgblk, cgtod(&sblock, c), sblock.fs_cgsize);
		if (sblock.fs_magic == FS_UFS2_MAGIC) {
			inosused = cgrp.cg_initediblk;
			if (inosused > sblock.fs_ipg)
				inosused = sblock.fs_ipg;
		} else
			inosused = sblock.fs_ipg;

		/*
		 * If we are using soft updates, then we can trust the
		 * cylinder group inode allocation maps to tell us which
		 * inodes are allocated. We will scan the used inode map
		 * to find the inodes that are really in use, and then
		 * read only those inodes in from disk.
		 */
		if (preen && usedsoftdep) {
			cp = &cg_inosused(&cgrp)[(inosused - 1) / CHAR_BIT];
			for ( ; inosused > 0; inosused -= CHAR_BIT, cp--) {
				if (*cp == 0)
					continue;
				for (i = 1 << (CHAR_BIT - 1); i > 0; i >>= 1) {
					if (*cp & i)
						break;
					inosused--;
				}
				break;
			}
			if (inosused < 0)
				inosused = 0;
		}
		/*
 		 * Allocate inoinfo structures for the allocated inodes.
		 */
		inostathead[c].il_numalloced = inosused;
		if (inosused == 0) {
			inostathead[c].il_stat = 0;
			continue;
		}
		info = calloc((unsigned)inosused, sizeof(struct inostat));
		inospace = (unsigned)inosused * sizeof(struct inostat);
		if (info == NULL)
			errexit("cannot alloc %zu bytes for inoinfo", inospace);
		inostathead[c].il_stat = info;
		/*
		 * Scan the allocated inodes.
		 */
		for (i = 0; i < inosused; i++, inumber++) {
			info_inumber = inumber;
			if (inumber < ROOTINO) {
				(void)getnextinode(inumber);
				continue;
			}
			checkinode(inumber, &idesc);
		}
		lastino += 1;
		if (inosused < sblock.fs_ipg || inumber == lastino)
			continue;
		/*
		 * If we were not able to determine in advance which inodes
		 * were in use, then reduce the size of the inoinfo structure
		 * to the size necessary to describe the inodes that we
		 * really found.
		 */
		if (lastino < (c * sblock.fs_ipg))
			ninosused = 0;
		else
			ninosused = lastino - (c * sblock.fs_ipg);
		inostathead[c].il_numalloced = ninosused;
		if (ninosused == 0) {
			free(inostathead[c].il_stat);
			inostathead[c].il_stat = 0;
			continue;
		}
		if (ninosused != inosused) {
			struct inostat *ninfo;
			size_t ninospace;

			ninfo = reallocarray(info, ninosused, sizeof(*ninfo));
			if (ninfo == NULL) {
				pfatal("too many inodes %llu, or out of memory\n",
				    (unsigned long long)ninosused);
				exit(8);
			}
			ninospace = ninosused * sizeof(*ninfo);
			if (ninosused > inosused)
				memset(&ninfo[inosused], 0, ninospace - inospace);
			inostathead[c].il_stat = ninfo;
		}
	}
예제 #3
0
/*
 * Scan the specified file system to check quota(s) present on it.
 */
int
chkquota(char *specname, struct quotafile *qfu, struct quotafile *qfg)
{
	struct fileusage *fup;
	union dinode *dp;
	int cg, i, mode, errs = 0;
	ino_t ino, inosused, userino = 0, groupino = 0;
	dev_t dev, userdev = 0, groupdev = 0;
	struct stat sb;
	const char *mntpt;
	char *cp;

	if (qfu != NULL)
		mntpt = quota_fsname(qfu);
	else if (qfg != NULL)
		mntpt = quota_fsname(qfg);
	else
		errx(1, "null quotafile information passed to chkquota()\n");
	if (cflag) {
		if (vflag && qfu != NULL)
			printf("%s: convert user quota to %d bits\n",
			    mntpt, cflag);
		if (qfu != NULL && quota_convert(qfu, cflag) < 0) {
			if (errno == EBADF)
				errx(1,
				    "%s: cannot convert an active quota file",
				    mntpt);
			err(1, "user quota conversion to size %d failed",
			    cflag);
		}
		if (vflag && qfg != NULL)
			printf("%s: convert group quota to %d bits\n",
			    mntpt, cflag);
		if (qfg != NULL && quota_convert(qfg, cflag) < 0) {
			if (errno == EBADF)
				errx(1,
				    "%s: cannot convert an active quota file",
				    mntpt);
			err(1, "group quota conversion to size %d failed",
			    cflag);
		}
	}
	if ((fi = open(specname, O_RDONLY, 0)) < 0) {
		warn("%s", specname);
		return (1);
	}
	if ((stat(mntpt, &sb)) < 0) {
		warn("%s", mntpt);
		return (1);
	}
	dev = sb.st_dev;
	if (vflag) {
		(void)printf("*** Checking ");
		if (qfu)
			(void)printf("user%s", qfg ? " and " : "");
		if (qfg)
			(void)printf("group");
		(void)printf(" quotas for %s (%s)\n", specname, mntpt);
	}
	if (qfu) {
		if (stat(quota_qfname(qfu), &sb) == 0) {
			userino = sb.st_ino;
			userdev = sb.st_dev;
		}
	}
	if (qfg) {
		if (stat(quota_qfname(qfg), &sb) == 0) {
			groupino = sb.st_ino;
			groupdev = sb.st_dev;
		}
	}
	sync();
	dev_bsize = 1;
	for (i = 0; sblock_try[i] != -1; i++) {
		bread(sblock_try[i], (char *)&sblock, (long)SBLOCKSIZE);
		if ((sblock.fs_magic == FS_UFS1_MAGIC ||
		     (sblock.fs_magic == FS_UFS2_MAGIC &&
		      sblock.fs_sblockloc == sblock_try[i])) &&
		    sblock.fs_bsize <= MAXBSIZE &&
		    sblock.fs_bsize >= sizeof(struct fs))
			break;
	}
	if (sblock_try[i] == -1) {
		warn("Cannot find file system superblock");
		return (1);
	}
	dev_bsize = sblock.fs_fsize / fsbtodb(&sblock, 1);
	maxino = sblock.fs_ncg * sblock.fs_ipg;
	for (cg = 0; cg < sblock.fs_ncg; cg++) {
		ino = cg * sblock.fs_ipg;
		setinodebuf(ino);
		bread(fsbtodb(&sblock, cgtod(&sblock, cg)), (char *)(&cgblk),
		    sblock.fs_cgsize);
		if (sblock.fs_magic == FS_UFS2_MAGIC)
			inosused = cgblk.cg_initediblk;
		else
			inosused = sblock.fs_ipg;
		/*
		 * If we are using soft updates, then we can trust the
		 * cylinder group inode allocation maps to tell us which
		 * inodes are allocated. We will scan the used inode map
		 * to find the inodes that are really in use, and then
		 * read only those inodes in from disk.
		 */
		if (sblock.fs_flags & FS_DOSOFTDEP) {
			if (!cg_chkmagic(&cgblk))
				errx(1, "CG %d: BAD MAGIC NUMBER\n", cg);
			cp = &cg_inosused(&cgblk)[(inosused - 1) / CHAR_BIT];
			for ( ; inosused > 0; inosused -= CHAR_BIT, cp--) {
				if (*cp == 0)
					continue;
				for (i = 1 << (CHAR_BIT - 1); i > 0; i >>= 1) {
					if (*cp & i)
						break;
					inosused--;
				}
				break;
			}
			if (inosused <= 0)
				continue;
		}
		for (i = 0; i < inosused; i++, ino++) {
			if ((dp = getnextinode(ino)) == NULL || ino < ROOTINO ||
			    (mode = DIP(dp, di_mode) & IFMT) == 0)
				continue;
			/*
			 * XXX: Do not account for UIDs or GIDs that appear
			 * to be negative to prevent generating 100GB+
			 * quota files.
			 */
			if ((int)DIP(dp, di_uid) < 0 ||
			    (int)DIP(dp, di_gid) < 0) {
				if (vflag) {
					if (aflag)
						(void)printf("%s: ", mntpt);
			(void)printf("out of range UID/GID (%u/%u) ino=%ju\n",
					    DIP(dp, di_uid), DIP(dp,di_gid),
					    (uintmax_t)ino);
				}
				continue;
			}

			/*
			 * Do not account for file system snapshot files
			 * or the actual quota data files to be consistent
			 * with how they are handled inside the kernel.
			 */
#ifdef	SF_SNAPSHOT
			if (DIP(dp, di_flags) & SF_SNAPSHOT)
				continue;
#endif
			if ((ino == userino && dev == userdev) ||
			    (ino == groupino && dev == groupdev))
				continue;
			if (qfg) {
				fup = addid((u_long)DIP(dp, di_gid), GRPQUOTA,
				    (char *)0, mntpt);
				fup->fu_curinodes++;
				if (mode == IFREG || mode == IFDIR ||
				    mode == IFLNK)
					fup->fu_curblocks += DIP(dp, di_blocks);
			}
			if (qfu) {
				fup = addid((u_long)DIP(dp, di_uid), USRQUOTA,
				    (char *)0, mntpt);
				fup->fu_curinodes++;
				if (mode == IFREG || mode == IFDIR ||
				    mode == IFLNK)
					fup->fu_curblocks += DIP(dp, di_blocks);
			}
		}
	}
	freeinodebuf();
	if (qfu)
		errs += update(mntpt, qfu, USRQUOTA);
	if (qfg)
		errs += update(mntpt, qfg, GRPQUOTA);
	close(fi);
	(void)fflush(stdout);
	return (errs);
}
예제 #4
0
/*
 * Scan the specified file system to check quota(s) present on it.
 */
int
chkquota(const char *vfstype, const char *fsname, const char *mntpt,
    void *auxarg, pid_t *pidp)
{
	struct quotaname *qnp = auxarg;
	struct fileusage *fup;
	union dinode *dp;
	int cg, i, mode, errs = 0, status;
	ino_t ino, inosused;
	pid_t pid;
	char *cp;

	switch (pid = fork()) {
	case -1:	/* error */
		warn("fork");
		return 1;
	case 0:		/* child */
		if ((fi = open(fsname, O_RDONLY, 0)) < 0)
			err(1, "%s", fsname);
		sync();
		dev_bsize = 1;
		for (i = 0; sblock_try[i] != -1; i++) {
			bread(sblock_try[i], (char *)&sblock, (long)SBLOCKSIZE);
			if ((sblock.fs_magic == FS_UFS1_MAGIC ||
			     (sblock.fs_magic == FS_UFS2_MAGIC &&
			      sblock.fs_sblockloc == sblock_try[i])) &&
			    sblock.fs_bsize <= MAXBSIZE &&
			    sblock.fs_bsize >= sizeof(struct fs))
				break;
		}
		if (sblock_try[i] == -1) {
			warn("Cannot find file system superblock");
			return (1);
		}
		dev_bsize = sblock.fs_fsize / fsbtodb(&sblock, 1);
		maxino = sblock.fs_ncg * sblock.fs_ipg;
		for (cg = 0; cg < sblock.fs_ncg; cg++) {
			ino = cg * sblock.fs_ipg;
			setinodebuf(ino);
			bread(fsbtodb(&sblock, cgtod(&sblock, cg)),
			    (char *)(&cgblk), sblock.fs_cgsize);
			if (sblock.fs_magic == FS_UFS2_MAGIC)
				inosused = cgblk.cg_initediblk;
			else
				inosused = sblock.fs_ipg;
			/*
			 * If we are using soft updates, then we can trust the
			 * cylinder group inode allocation maps to tell us which
			 * inodes are allocated. We will scan the used inode map
			 * to find the inodes that are really in use, and then
			 * read only those inodes in from disk.
			 */
			if (sblock.fs_flags & FS_DOSOFTDEP) {
				if (!cg_chkmagic(&cgblk))
					errx(1, "CG %d: BAD MAGIC NUMBER\n", cg);
				cp = &cg_inosused(&cgblk)[(inosused - 1) / CHAR_BIT];
				for ( ; inosused > 0; inosused -= CHAR_BIT, cp--) {
					if (*cp == 0)
						continue;
					for (i = 1 << (CHAR_BIT - 1); i > 0; i >>= 1) {
						if (*cp & i)
							break;
						inosused--;
					}
					break;
				}
				if (inosused <= 0)
					continue;
			}
			for (i = 0; i < inosused; i++, ino++) {
				if ((dp = getnextinode(ino)) == NULL ||
				    ino < ROOTINO ||
				    (mode = DIP(dp, di_mode) & IFMT) == 0)
					continue;
				if (qnp->flags & HASGRP) {
					fup = addid(DIP(dp, di_gid),
					    GRPQUOTA, NULL);
					fup->fu_curinodes++;
					if (mode == IFREG || mode == IFDIR ||
					    mode == IFLNK)
						fup->fu_curblocks +=
						    DIP(dp, di_blocks);
				}
				if (qnp->flags & HASUSR) {
					fup = addid(DIP(dp, di_uid),
					    USRQUOTA, NULL);
					fup->fu_curinodes++;
					if (mode == IFREG || mode == IFDIR ||
					    mode == IFLNK)
						fup->fu_curblocks +=
						    DIP(dp, di_blocks);
				}
			}
		}
		freeinodebuf();
		if (flags&(CHECK_DEBUG|CHECK_VERBOSE)) {
			(void)printf("*** Checking ");
			if (qnp->flags & HASUSR) {
				(void)printf("%s", qfextension[USRQUOTA]);
				if (qnp->flags & HASGRP)
					(void)printf(" and ");
			}
			if (qnp->flags & HASGRP)
				(void)printf("%s", qfextension[GRPQUOTA]);
			(void)printf(" quotas for %s (%s), %swait\n",
			    fsname, mntpt, pidp? "no" : "");
		}
		if (qnp->flags & HASUSR)
			errs += update(mntpt, qnp->usrqfname, USRQUOTA);
		if (qnp->flags & HASGRP)
			errs += update(mntpt, qnp->grpqfname, GRPQUOTA);
		close(fi);
		exit (errs);
		break;
	default:	/* parent */
		if (pidp != NULL) {
			*pidp = pid;
			return 0;
		}
		if (waitpid(pid, &status, 0) < 0) {
			warn("waitpid");
			return 1;
		}
		if (WIFEXITED(status)) {
			if (WEXITSTATUS(status) != 0)
				return WEXITSTATUS(status);
		} else if (WIFSIGNALED(status)) {
			warnx("%s: %s", fsname, strsignal(WTERMSIG(status)));
			return 1;
		}
		break;
	}
	return (0);
}