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Annotation of 43BSDReno/usr.sbin/quotaon/quotaon.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980, 1990 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * This code is derived from software contributed to Berkeley by
        !             6:  * Robert Elz at The University of Melbourne.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms are permitted provided
        !             9:  * that: (1) source distributions retain this entire copyright notice and
        !            10:  * comment, and (2) distributions including binaries display the following
        !            11:  * acknowledgement:  ``This product includes software developed by the
        !            12:  * University of California, Berkeley and its contributors'' in the
        !            13:  * documentation or other materials provided with the distribution and in
        !            14:  * all advertising materials mentioning features or use of this software.
        !            15:  * Neither the name of the University nor the names of its contributors may
        !            16:  * be used to endorse or promote products derived from this software without
        !            17:  * specific prior written permission.
        !            18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            19:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            20:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            21:  */
        !            22: 
        !            23: #ifndef lint
        !            24: char copyright[] =
        !            25: "@(#) Copyright (c) 1980, 1990 Regents of the University of California.\n\
        !            26:  All rights reserved.\n";
        !            27: #endif /* not lint */
        !            28: 
        !            29: #ifndef lint
        !            30: static char sccsid[] = "@(#)quotaon.c  5.11 (Berkeley) 6/1/90";
        !            31: #endif /* not lint */
        !            32: 
        !            33: /*
        !            34:  * Turn quota on/off for a filesystem.
        !            35:  */
        !            36: #include <sys/param.h>
        !            37: #include <sys/file.h>
        !            38: #include <sys/mount.h>
        !            39: #include <ufs/quota.h>
        !            40: #include <stdio.h>
        !            41: #include <fstab.h>
        !            42: 
        !            43: int    aflag;          /* all file systems */
        !            44: int    gflag;          /* operate on group quotas */
        !            45: int    uflag;          /* operate on user quotas */
        !            46: int    vflag;          /* verbose */
        !            47: 
        !            48: main(argc, argv)
        !            49:        int argc;
        !            50:        char **argv;
        !            51: {
        !            52:        register struct fstab *fs;
        !            53:        char ch, *qfnp, *whoami, *rindex();
        !            54:        long argnum, done = 0;
        !            55:        int i, offmode = 0, errs = 0;
        !            56:        extern char *optarg;
        !            57:        extern int optind;
        !            58: 
        !            59:        whoami = rindex(*argv, '/') + 1;
        !            60:        if (whoami == (char *)1)
        !            61:                whoami = *argv;
        !            62:        if (strcmp(whoami, "quotaoff") == 0)
        !            63:                offmode++;
        !            64:        else if (strcmp(whoami, "quotaon") != 0) {
        !            65:                fprintf(stderr, "Name must be quotaon or quotaoff not %s\n",
        !            66:                        whoami);
        !            67:                exit(1);
        !            68:        }
        !            69:        while ((ch = getopt(argc, argv, "avug")) != EOF) {
        !            70:                switch(ch) {
        !            71:                case 'a':
        !            72:                        aflag++;
        !            73:                        break;
        !            74:                case 'g':
        !            75:                        gflag++;
        !            76:                        break;
        !            77:                case 'u':
        !            78:                        uflag++;
        !            79:                        break;
        !            80:                case 'v':
        !            81:                        vflag++;
        !            82:                        break;
        !            83:                default:
        !            84:                        usage(whoami);
        !            85:                }
        !            86:        }
        !            87:        argc -= optind;
        !            88:        argv += optind;
        !            89:        if (argc <= 0 && !aflag)
        !            90:                usage(whoami);
        !            91:        if (!gflag && !uflag) {
        !            92:                gflag++;
        !            93:                uflag++;
        !            94:        }
        !            95:        setfsent();
        !            96:        while ((fs = getfsent()) != NULL) {
        !            97:                if (strcmp(fs->fs_vfstype, "ufs") ||
        !            98:                    strcmp(fs->fs_type, FSTAB_RW))
        !            99:                        continue;
        !           100:                if (aflag) {
        !           101:                        if (gflag && hasquota(fs, GRPQUOTA, &qfnp))
        !           102:                                errs += quotaonoff(fs, offmode, GRPQUOTA, qfnp);
        !           103:                        if (uflag && hasquota(fs, USRQUOTA, &qfnp))
        !           104:                                errs += quotaonoff(fs, offmode, USRQUOTA, qfnp);
        !           105:                        continue;
        !           106:                }
        !           107:                if ((argnum = oneof(fs->fs_file, argv, argc)) >= 0 ||
        !           108:                    (argnum = oneof(fs->fs_spec, argv, argc)) >= 0) {
        !           109:                        done |= 1 << argnum;
        !           110:                        if (gflag && hasquota(fs, GRPQUOTA, &qfnp))
        !           111:                                errs += quotaonoff(fs, offmode, GRPQUOTA, qfnp);
        !           112:                        if (uflag && hasquota(fs, USRQUOTA, &qfnp))
        !           113:                                errs += quotaonoff(fs, offmode, USRQUOTA, qfnp);
        !           114:                }
        !           115:        }
        !           116:        endfsent();
        !           117:        for (i = 0; i < argc; i++)
        !           118:                if ((done & (1 << i)) == 0)
        !           119:                        fprintf(stderr, "%s not found in fstab\n",
        !           120:                                argv[i]);
        !           121:        exit(errs);
        !           122: }
        !           123: 
        !           124: usage(whoami)
        !           125:        char *whoami;
        !           126: {
        !           127: 
        !           128:        fprintf(stderr, "Usage:\n\t%s [-g] [-u] [-v] -a\n", whoami);
        !           129:        fprintf(stderr, "\t%s [-g] [-u] [-v] filesys ...\n", whoami);
        !           130:        exit(1);
        !           131: }
        !           132: 
        !           133: quotaonoff(fs, offmode, type, qfpathname)
        !           134:        register struct fstab *fs;
        !           135:        int offmode, type;
        !           136:        char *qfpathname;
        !           137: {
        !           138: 
        !           139:        if (strcmp(fs->fs_file, "/") && readonly(fs))
        !           140:                return (1);
        !           141:        if (offmode) {
        !           142:                if (quotactl(fs->fs_file, QCMD(Q_QUOTAOFF, type), 0, 0) < 0) {
        !           143:                        fprintf(stderr, "quotaoff: ");
        !           144:                        perror(fs->fs_file);
        !           145:                        return (1);
        !           146:                }
        !           147:                if (vflag)
        !           148:                        printf("%s: quotas turned off\n", fs->fs_file);
        !           149:                return (0);
        !           150:        }
        !           151:        if (quotactl(fs->fs_file, QCMD(Q_QUOTAON, type), 0, qfpathname) < 0) {
        !           152:                fprintf(stderr, "quotaon: using %s on", qfpathname);
        !           153:                perror(fs->fs_file);
        !           154:                return (1);
        !           155:        }
        !           156:        if (vflag)
        !           157:                printf("%s: %s quotas turned on\n", fs->fs_file,
        !           158:                    qfextension[type]);
        !           159:        return (0);
        !           160: }
        !           161: 
        !           162: /*
        !           163:  * Check to see if target appears in list of size cnt.
        !           164:  */
        !           165: oneof(target, list, cnt)
        !           166:        register char *target, *list[];
        !           167:        int cnt;
        !           168: {
        !           169:        register int i;
        !           170: 
        !           171:        for (i = 0; i < cnt; i++)
        !           172:                if (strcmp(target, list[i]) == 0)
        !           173:                        return (i);
        !           174:        return (-1);
        !           175: }
        !           176: 
        !           177: /*
        !           178:  * Check to see if a particular quota is to be enabled.
        !           179:  */
        !           180: hasquota(fs, type, qfnamep)
        !           181:        register struct fstab *fs;
        !           182:        int type;
        !           183:        char **qfnamep;
        !           184: {
        !           185:        register char *opt;
        !           186:        char *cp, *index(), *strtok();
        !           187:        static char initname, usrname[100], grpname[100];
        !           188:        static char buf[BUFSIZ];
        !           189: 
        !           190:        if (!initname) {
        !           191:                sprintf(usrname, "%s%s", qfextension[USRQUOTA], qfname);
        !           192:                sprintf(grpname, "%s%s", qfextension[GRPQUOTA], qfname);
        !           193:                initname = 1;
        !           194:        }
        !           195:        strcpy(buf, fs->fs_mntops);
        !           196:        for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) {
        !           197:                if (cp = index(opt, '='))
        !           198:                        *cp++ = '\0';
        !           199:                if (type == USRQUOTA && strcmp(opt, usrname) == 0)
        !           200:                        break;
        !           201:                if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
        !           202:                        break;
        !           203:        }
        !           204:        if (!opt)
        !           205:                return (0);
        !           206:        if (cp) {
        !           207:                *qfnamep = cp;
        !           208:                return (1);
        !           209:        }
        !           210:        (void) sprintf(buf, "%s/%s.%s", fs->fs_file, qfname, qfextension[type]);
        !           211:        *qfnamep = buf;
        !           212:        return (1);
        !           213: }
        !           214: 
        !           215: /*
        !           216:  * Verify file system is mounted and not readonly.
        !           217:  */
        !           218: readonly(fs)
        !           219:        register struct fstab *fs;
        !           220: {
        !           221:        struct statfs fsbuf;
        !           222: 
        !           223:        if (statfs(fs->fs_file, &fsbuf) < 0 ||
        !           224:            strcmp(fsbuf.f_mntonname, fs->fs_file) ||
        !           225:            strcmp(fsbuf.f_mntfromname, fs->fs_spec)) {
        !           226:                printf("%s: not mounted\n", fs->fs_file);
        !           227:                return (1);
        !           228:        }
        !           229:        if (fsbuf.f_flags & MNT_RDONLY) {
        !           230:                printf("%s: mounted read-only\n", fs->fs_file);
        !           231:                return (1);
        !           232:        }
        !           233:        return (0);
        !           234: }

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