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- /*
- * Copyright (c) 1980, 1990 Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Robert Elz at The University of Melbourne.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #ifndef lint
- char copyright[] =
- "@(#) Copyright (c) 1980, 1990 Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- #ifndef lint
- static char sccsid[] = "@(#)quotacheck.c 5.16 (Berkeley) 2/28/91";
- #endif /* not lint */
-
- /*
- * Fix up / report on disk quotas & usage
- */
- #include <sys/param.h>
- #include <sys/stat.h>
- #include <ufs/dinode.h>
- #include <ufs/fs.h>
- #include <ufs/quota.h>
- #include <fcntl.h>
- #include <fstab.h>
- #include <pwd.h>
- #include <grp.h>
- #include <errno.h>
- #include <unistd.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
-
- char *qfname = QUOTAFILENAME;
- char *qfextension[] = INITQFNAMES;
- char *quotagroup = QUOTAGROUP;
-
- union {
- struct fs sblk;
- char dummy[MAXBSIZE];
- } un;
- #define sblock un.sblk
- long dev_bsize = 1;
- long maxino;
-
- struct quotaname {
- long flags;
- char grpqfname[MAXPATHLEN + 1];
- char usrqfname[MAXPATHLEN + 1];
- };
- #define HASUSR 1
- #define HASGRP 2
-
- struct fileusage {
- struct fileusage *fu_next;
- u_long fu_curinodes;
- u_long fu_curblocks;
- u_long fu_id;
- char fu_name[1];
- /* actually bigger */
- };
- #define FUHASH 1024 /* must be power of two */
- struct fileusage *fuhead[MAXQUOTAS][FUHASH];
- struct fileusage *lookup();
- struct fileusage *addid();
- struct dinode *getnextinode();
-
- int aflag; /* all file systems */
- int gflag; /* check group quotas */
- int uflag; /* check user quotas */
- int vflag; /* verbose */
- int fi; /* open disk file descriptor */
- u_long highid[MAXQUOTAS]; /* highest addid()'ed identifier per type */
-
- main(argc, argv)
- int argc;
- char **argv;
- {
- register struct fstab *fs;
- register struct passwd *pw;
- register struct group *gr;
- int i, argnum, maxrun, errs = 0;
- long auxdata, done = 0;
- char ch, *name, *blockcheck();
- int needchk(), chkquota();
- extern char *optarg;
- extern int optind;
-
- while ((ch = getopt(argc, argv, "aguvl:")) != EOF) {
- switch(ch) {
- case 'a':
- aflag++;
- break;
- case 'g':
- gflag++;
- break;
- case 'u':
- uflag++;
- break;
- case 'v':
- vflag++;
- break;
- case 'l':
- maxrun = atoi(optarg);
- break;
- default:
- usage();
- }
- }
- argc -= optind;
- argv += optind;
- if ((argc == 0 && !aflag) || (argc > 0 && aflag))
- usage();
- if (!gflag && !uflag) {
- gflag++;
- uflag++;
- }
- if (gflag) {
- setgrent();
- while ((gr = getgrent()) != 0)
- (void) addid((u_long)gr->gr_gid, GRPQUOTA, gr->gr_name);
- endgrent();
- }
- if (uflag) {
- setpwent();
- while ((pw = getpwent()) != 0)
- (void) addid((u_long)pw->pw_uid, USRQUOTA, pw->pw_name);
- endpwent();
- }
- if (aflag)
- exit(checkfstab(1, maxrun, needchk, chkquota));
- if (setfsent() == 0) {
- fprintf(stderr, "Can't open ");
- perror(FSTAB);
- exit(8);
- }
- while ((fs = getfsent()) != NULL) {
- if (((argnum = oneof(fs->fs_file, argv, argc)) >= 0 ||
- (argnum = oneof(fs->fs_spec, argv, argc)) >= 0) &&
- (auxdata = needchk(fs)) &&
- (name = blockcheck(fs->fs_spec))) {
- done |= 1 << argnum;
- errs += chkquota(name, fs->fs_file, auxdata);
- }
- }
- endfsent();
- for (i = 0; i < argc; i++)
- if ((done & (1 << i)) == 0)
- fprintf(stderr, "%s not found in %s\n",
- argv[i], FSTAB);
- exit(errs);
- }
-
- usage()
- {
- (void) fprintf(stderr, "usage:\t%s\n\t%s\n",
- "quotacheck -a [-guv]",
- "quotacheck [-guv] filesys ...");
- exit(1);
- }
-
- needchk(fs)
- register struct fstab *fs;
- {
- register struct quotaname *qnp;
- char *qfnp;
-
- if (strcmp(fs->fs_vfstype, "ufs") ||
- strcmp(fs->fs_type, FSTAB_RW))
- return (0);
- if ((qnp = (struct quotaname *)malloc(sizeof *qnp)) == 0) {
- fprintf(stderr, "out of memory for quota structures\n");
- exit(1);
- }
- qnp->flags = 0;
- if (gflag && hasquota(fs, GRPQUOTA, &qfnp)) {
- strcpy(qnp->grpqfname, qfnp);
- qnp->flags |= HASGRP;
- }
- if (uflag && hasquota(fs, USRQUOTA, &qfnp)) {
- strcpy(qnp->usrqfname, qfnp);
- qnp->flags |= HASUSR;
- }
- if (qnp->flags)
- return ((int)qnp);
- free((char *)qnp);
- return (0);
- }
-
- /*
- * Scan the specified filesystem to check quota(s) present on it.
- */
- chkquota(fsname, mntpt, qnp)
- char *fsname, *mntpt;
- register struct quotaname *qnp;
- {
- register struct fileusage *fup;
- register struct dinode *dp;
- int cg, i, mode, errs = 0;
- ino_t ino;
-
- if ((fi = open(fsname, 0)) < 0) {
- perror(fsname);
- return (1);
- }
- if (vflag) {
- fprintf(stdout, "*** Checking ");
- if (qnp->flags & HASUSR)
- fprintf(stdout, "%s%s", qfextension[USRQUOTA],
- (qnp->flags & HASGRP) ? " and " : "");
- if (qnp->flags & HASGRP)
- fprintf(stdout, "%s", qfextension[GRPQUOTA]);
- fprintf(stdout, " quotas for %s (%s)\n", fsname, mntpt);
- }
- sync();
- bread(SBOFF, (char *)&sblock, (long)SBSIZE);
- dev_bsize = sblock.fs_fsize / fsbtodb(&sblock, 1);
- maxino = sblock.fs_ncg * sblock.fs_ipg;
- resetinodebuf();
- for (ino = 0, cg = 0; cg < sblock.fs_ncg; cg++) {
- for (i = 0; i < sblock.fs_ipg; i++, ino++) {
- if (ino < ROOTINO)
- continue;
- if ((dp = getnextinode(ino)) == NULL)
- continue;
- if ((mode = dp->di_mode & IFMT) == 0)
- continue;
- if (qnp->flags & HASGRP) {
- fup = addid((u_long)dp->di_gid, GRPQUOTA,
- (char *)0);
- fup->fu_curinodes++;
- if (mode == IFREG || mode == IFDIR ||
- mode == IFLNK)
- fup->fu_curblocks += dp->di_blocks;
- }
- if (qnp->flags & HASUSR) {
- fup = addid((u_long)dp->di_uid, USRQUOTA,
- (char *)0);
- fup->fu_curinodes++;
- if (mode == IFREG || mode == IFDIR ||
- mode == IFLNK)
- fup->fu_curblocks += dp->di_blocks;
- }
- }
- }
- freeinodebuf();
- if (qnp->flags & HASUSR)
- errs += update(mntpt, qnp->usrqfname, USRQUOTA);
- if (qnp->flags & HASGRP)
- errs += update(mntpt, qnp->grpqfname, GRPQUOTA);
- close(fi);
- return (errs);
- }
-
- /*
- * Update a specified quota file.
- */
- update(fsname, quotafile, type)
- char *fsname, *quotafile;
- register int type;
- {
- register struct fileusage *fup;
- register FILE *qfi, *qfo;
- register u_long id, lastid;
- struct dqblk dqbuf;
- static int warned = 0;
- static struct dqblk zerodqbuf;
- static struct fileusage zerofileusage;
-
- if ((qfo = fopen(quotafile, "r+")) == NULL) {
- if (errno == ENOENT)
- qfo = fopen(quotafile, "w+");
- if (qfo) {
- (void) fprintf(stderr,
- "quotacheck: creating quota file %s\n", quotafile);
- #define MODE (S_IRUSR|S_IWUSR|S_IRGRP)
- (void) fchown(fileno(qfo), getuid(), getquotagid());
- (void) fchmod(fileno(qfo), MODE);
- } else {
- (void) fprintf(stderr,
- "quotacheck: %s: %s\n", quotafile, strerror(errno));
- return (1);
- }
- }
- if ((qfi = fopen(quotafile, "r")) == NULL) {
- (void) fprintf(stderr,
- "quotacheck: %s: %s\n", quotafile, strerror(errno));
- (void) fclose(qfo);
- return (1);
- }
- if (quotactl(fsname, QCMD(Q_SYNC, type), (u_long)0, (caddr_t)0) < 0 &&
- errno == EOPNOTSUPP && !warned && vflag) {
- warned++;
- fprintf(stdout, "*** Warning: %s\n",
- "Quotas are not compiled into this kernel");
- }
- for (lastid = highid[type], id = 0; id <= lastid; id++) {
- if (fread((char *)&dqbuf, sizeof(struct dqblk), 1, qfi) == 0)
- dqbuf = zerodqbuf;
- if ((fup = lookup(id, type)) == 0)
- fup = &zerofileusage;
- if (dqbuf.dqb_curinodes == fup->fu_curinodes &&
- dqbuf.dqb_curblocks == fup->fu_curblocks) {
- fup->fu_curinodes = 0;
- fup->fu_curblocks = 0;
- fseek(qfo, (long)sizeof(struct dqblk), 1);
- continue;
- }
- if (vflag) {
- if (aflag)
- printf("%s: ", fsname);
- printf("%-8s fixed:", fup->fu_name);
- if (dqbuf.dqb_curinodes != fup->fu_curinodes)
- fprintf(stdout, "\tinodes %d -> %d",
- dqbuf.dqb_curinodes, fup->fu_curinodes);
- if (dqbuf.dqb_curblocks != fup->fu_curblocks)
- fprintf(stdout, "\tblocks %d -> %d",
- dqbuf.dqb_curblocks, fup->fu_curblocks);
- fprintf(stdout, "\n");
- }
- /*
- * Reset time limit if have a soft limit and were
- * previously under it, but are now over it.
- */
- if (dqbuf.dqb_bsoftlimit &&
- dqbuf.dqb_curblocks < dqbuf.dqb_bsoftlimit &&
- fup->fu_curblocks >= dqbuf.dqb_bsoftlimit)
- dqbuf.dqb_btime = 0;
- if (dqbuf.dqb_isoftlimit &&
- dqbuf.dqb_curblocks < dqbuf.dqb_isoftlimit &&
- fup->fu_curblocks >= dqbuf.dqb_isoftlimit)
- dqbuf.dqb_itime = 0;
- dqbuf.dqb_curinodes = fup->fu_curinodes;
- dqbuf.dqb_curblocks = fup->fu_curblocks;
- fwrite((char *)&dqbuf, sizeof(struct dqblk), 1, qfo);
- (void) quotactl(fsname, QCMD(Q_SETUSE, type), id,
- (caddr_t)&dqbuf);
- fup->fu_curinodes = 0;
- fup->fu_curblocks = 0;
- }
- fclose(qfi);
- fflush(qfo);
- ftruncate(fileno(qfo),
- (off_t)((highid[type] + 1) * sizeof(struct dqblk)));
- fclose(qfo);
- return (0);
- }
-
- /*
- * Check to see if target appears in list of size cnt.
- */
- oneof(target, list, cnt)
- register char *target, *list[];
- int cnt;
- {
- register int i;
-
- for (i = 0; i < cnt; i++)
- if (strcmp(target, list[i]) == 0)
- return (i);
- return (-1);
- }
-
- /*
- * Determine the group identifier for quota files.
- */
- getquotagid()
- {
- struct group *gr;
-
- if (gr = getgrnam(quotagroup))
- return (gr->gr_gid);
- return (-1);
- }
-
- /*
- * Check to see if a particular quota is to be enabled.
- */
- hasquota(fs, type, qfnamep)
- register struct fstab *fs;
- int type;
- char **qfnamep;
- {
- register char *opt;
- char *cp, *index(), *strtok();
- static char initname, usrname[100], grpname[100];
- static char buf[BUFSIZ];
-
- if (!initname) {
- sprintf(usrname, "%s%s", qfextension[USRQUOTA], qfname);
- sprintf(grpname, "%s%s", qfextension[GRPQUOTA], qfname);
- initname = 1;
- }
- strcpy(buf, fs->fs_mntops);
- for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) {
- if (cp = index(opt, '='))
- *cp++ = '\0';
- if (type == USRQUOTA && strcmp(opt, usrname) == 0)
- break;
- if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
- break;
- }
- if (!opt)
- return (0);
- if (cp) {
- *qfnamep = cp;
- return (1);
- }
- (void) sprintf(buf, "%s/%s.%s", fs->fs_file, qfname, qfextension[type]);
- *qfnamep = buf;
- return (1);
- }
-
- /*
- * Routines to manage the file usage table.
- *
- * Lookup an id of a specific type.
- */
- struct fileusage *
- lookup(id, type)
- u_long id;
- int type;
- {
- register struct fileusage *fup;
-
- for (fup = fuhead[type][id & (FUHASH-1)]; fup != 0; fup = fup->fu_next)
- if (fup->fu_id == id)
- return (fup);
- return ((struct fileusage *)0);
- }
-
- /*
- * Add a new file usage id if it does not already exist.
- */
- struct fileusage *
- addid(id, type, name)
- u_long id;
- int type;
- char *name;
- {
- struct fileusage *fup, **fhp;
- int len;
-
- if (fup = lookup(id, type))
- return (fup);
- if (name)
- len = strlen(name);
- else
- len = 10;
- if ((fup = (struct fileusage *)calloc(1, sizeof(*fup) + len)) == NULL) {
- fprintf(stderr, "out of memory for fileusage structures\n");
- exit(1);
- }
- fhp = &fuhead[type][id & (FUHASH - 1)];
- fup->fu_next = *fhp;
- *fhp = fup;
- fup->fu_id = id;
- if (id > highid[type])
- highid[type] = id;
- if (name) {
- bcopy(name, fup->fu_name, len + 1);
- } else {
- sprintf(fup->fu_name, "%u", id);
- }
- return (fup);
- }
-
- /*
- * Special purpose version of ginode used to optimize pass
- * over all the inodes in numerical order.
- */
- ino_t nextino, lastinum;
- long readcnt, readpercg, fullcnt, inobufsize, partialcnt, partialsize;
- struct dinode *inodebuf;
- #define INOBUFSIZE 56*1024 /* size of buffer to read inodes */
-
- struct dinode *
- getnextinode(inumber)
- ino_t inumber;
- {
- long size;
- daddr_t dblk;
- static struct dinode *dp;
-
- if (inumber != nextino++ || inumber > maxino) {
- fprintf(stderr, "bad inode number %d to nextinode\n", inumber);
- exit(1);
- }
- if (inumber >= lastinum) {
- readcnt++;
- dblk = fsbtodb(&sblock, itod(&sblock, lastinum));
- if (readcnt % readpercg == 0) {
- size = partialsize;
- lastinum += partialcnt;
- } else {
- size = inobufsize;
- lastinum += fullcnt;
- }
- bread(dblk, (char *)inodebuf, size);
- dp = inodebuf;
- }
- return (dp++);
- }
-
- /*
- * Prepare to scan a set of inodes.
- */
- resetinodebuf()
- {
-
- nextino = 0;
- lastinum = 0;
- readcnt = 0;
- inobufsize = blkroundup(&sblock, INOBUFSIZE);
- fullcnt = inobufsize / sizeof(struct dinode);
- readpercg = sblock.fs_ipg / fullcnt;
- partialcnt = sblock.fs_ipg % fullcnt;
- partialsize = partialcnt * sizeof(struct dinode);
- if (partialcnt != 0) {
- readpercg++;
- } else {
- partialcnt = fullcnt;
- partialsize = inobufsize;
- }
- if (inodebuf == NULL &&
- (inodebuf = (struct dinode *)malloc((unsigned)inobufsize)) == NULL) {
- fprintf(stderr, "Cannot allocate space for inode buffer\n");
- exit(1);
- }
- while (nextino < ROOTINO)
- getnextinode(nextino);
- }
-
- /*
- * Free up data structures used to scan inodes.
- */
- freeinodebuf()
- {
-
- if (inodebuf != NULL)
- free((char *)inodebuf);
- inodebuf = NULL;
- }
-
- /*
- * Read specified disk blocks.
- */
- bread(bno, buf, cnt)
- daddr_t bno;
- char *buf;
- long cnt;
- {
-
- if (lseek(fi, bno * dev_bsize, 0) < 0) {
- perror("lseek");
- exit(1);
- }
-
- if (read(fi, buf, cnt) != cnt) {
- perror("read");
- exit(1);
- }
- }
-