diskdev_cmds/quotaon.tproj/quotaon.c

   1 /*
   2  * Copyright (c) 1999, 2002, 2005 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * Copyright (c) 1980, 1990, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * This code is derived from software contributed to Berkeley by
  28  * Robert Elz at The University of Melbourne.
  29  *
  30  * Redistribution and use in source and binary forms, with or without
  31  * modification, are permitted provided that the following conditions
  32  * are met:
  33  * 1. Redistributions of source code must retain the above copyright
  34  *    notice, this list of conditions and the following disclaimer.
  35  * 2. Redistributions in binary form must reproduce the above copyright
  36  *    notice, this list of conditions and the following disclaimer in the
  37  *    documentation and/or other materials provided with the distribution.
  38  * 3. All advertising materials mentioning features or use of this software
  39  *    must display the following acknowledgement:
  40  *      This product includes software developed by the University of
  41  *      California, Berkeley and its contributors.
  42  * 4. Neither the name of the University nor the names of its contributors
  43  *    may be used to endorse or promote products derived from this software
  44  *    without specific prior written permission.
  45  *
  46  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  47  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  48  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  49  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  50  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  51  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  52  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  53  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  54  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  55  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  56  * SUCH DAMAGE.
  57  */
  58
  59 #include <sys/cdefs.h>
  60
  61 #ifndef lint
  62 __unused static char copyright[] =
  63 "@(#) Copyright (c) 1980, 1990, 1993\n\
  64         The Regents of the University of California.  All rights reserved.\n";
  65 #endif /* not lint */
  66
  67 #ifndef lint
  68 __unused static char sccsid[] = "@(#)quotaon.c  8.1 (Berkeley) 6/6/93";
  69 #endif /* not lint */
  70
  71 /*
  72  * Turn quota on/off for a filesystem.
  73  */
  74 #include <sys/param.h>
  75 #include <sys/file.h>
  76 #include <sys/mount.h>
  77 #ifdef __APPLE__
  78 #include <sys/stat.h>
  79 #endif /* __APPLE__ */
  80 #include <sys/appleapiopts.h>
  81 #include <sys/quota.h>
  82 #include <stdio.h>
  83 #include <fstab.h>
  84 #include <string.h>
  85 #include <stdlib.h>
  86 #include <unistd.h>
  87
  88 /* Internal functions */
  89 void usage(char *whoami);
  90
  91 char *qfname = QUOTAFILENAME;
  92 char *qfextension[] = INITQFNAMES;
  93
  94 int     aflag;          /* all file systems */
  95 int     gflag;          /* operate on group quotas */
  96 int     uflag;          /* operate on user quotas */
  97 int     vflag;          /* verbose */
  98
  99 /* Function prototypes */
 100 #ifdef __APPLE__
 101 int hasquota(register struct statfs *, int, char **);
 102 int quotaonoff(register struct statfs *, int, int, char *);
 103 #else
 104 int hasquota(register struct fstab *, int, char **);
 105 int quotaonoff(register struct fstab *, int, int, char *);
 106 #endif /* __APPLE__ */
 107
 108 int oneof(register char *, register char **, int);
 109
 110 int main(argc, argv)
 111         int argc;
 112         char **argv;
 113 {
 114         char ch, *qfnp, *whoami, *rindex();
 115         long argnum, done = 0;
 116         int i, offmode = 0, errs = 0;
 117 #ifdef __APPLE__
 118         int nfst;
 119         struct statfs *fst;
 120 #endif /* __APPLE__ */
 121
 122         whoami = rindex(*argv, '/') + 1;
 123         if (whoami == (char *)1)
 124                 whoami = *argv;
 125         if (strcmp(whoami, "quotaoff") == 0)
 126                 offmode++;
 127         else if (strcmp(whoami, "quotaon") != 0) {
 128                 fprintf(stderr, "Name must be quotaon or quotaoff not %s\n",
 129                         whoami);
 130                 exit(1);
 131         }
 132         while ((ch = getopt(argc, argv, "avug")) != EOF) {
 133                 switch(ch) {
 134                 case 'a':
 135                         aflag++;
 136                         break;
 137                 case 'g':
 138                         gflag++;
 139                         break;
 140                 case 'u':
 141                         uflag++;
 142                         break;
 143                 case 'v':
 144                         vflag++;
 145                         break;
 146                 default:
 147                         usage(whoami);
 148                 }
 149         }
 150         argc -= optind;
 151         argv += optind;
 152         if (argc <= 0 && !aflag)
 153                 usage(whoami);
 154         if (!gflag && !uflag) {
 155                 gflag++;
 156                 uflag++;
 157         }
 158
 159 #ifdef __APPLE__
 160         nfst = getmntinfo(&fst, MNT_WAIT);
 161         if (nfst==0) {
 162           fprintf(stderr, "no filesystems mounted");
 163           return(1);
 164         }
 165
 166         for (i=0; i<nfst; i++) {
 167           if(strcmp(fst[i].f_fstypename, "hfs")) {
 168               continue;
 169           }
 170           if(fst[i].f_flags & MNT_RDONLY) {
 171             errs++;
 172             continue;
 173           }
 174
 175           if (aflag) {
 176             if (gflag && hasquota(&fst[i], GRPQUOTA, &qfnp))
 177               errs += quotaonoff(&fst[i], offmode, GRPQUOTA, qfnp);
 178             if (uflag && hasquota(&fst[i], USRQUOTA, &qfnp))
 179               errs += quotaonoff(&fst[i], offmode, USRQUOTA, qfnp);
 180             continue;
 181           }
 182           if ((argnum = oneof(fst[i].f_mntonname, argv, argc)) >= 0 ||
 183               (argnum = oneof(fst[i].f_mntfromname, argv, argc)) >= 0) {
 184             done |= 1 << argnum;
 185             if (gflag && hasquota(&fst[i], GRPQUOTA, &qfnp))
 186               errs += quotaonoff(&fst[i], offmode, GRPQUOTA, qfnp);
 187             if (uflag && hasquota(&fst[i], USRQUOTA, &qfnp))
 188               errs += quotaonoff(&fst[i], offmode, USRQUOTA, qfnp);
 189           }
 190         }
 191 #else
 192         register struct fstab *fs;
 193         setfsent();
 194         while ((fs = getfsent()) != NULL) {
 195                 if (strcmp(fs->fs_vfstype, "ufs") ||
 196                     strcmp(fs->fs_type, FSTAB_RW))
 197                         continue;
 198                 if (aflag) {
 199                         if (gflag && hasquota(fs, GRPQUOTA, &qfnp))
 200                                 errs += quotaonoff(fs, offmode, GRPQUOTA, qfnp);
 201                         if (uflag && hasquota(fs, USRQUOTA, &qfnp))
 202                                 errs += quotaonoff(fs, offmode, USRQUOTA, qfnp);
 203                         continue;
 204                 }
 205                 if ((argnum = oneof(fs->fs_file, argv, argc)) >= 0 ||
 206                     (argnum = oneof(fs->fs_spec, argv, argc)) >= 0) {
 207                         done |= 1 << argnum;
 208                         if (gflag && hasquota(fs, GRPQUOTA, &qfnp))
 209                                 errs += quotaonoff(fs, offmode, GRPQUOTA, qfnp);
 210                         if (uflag && hasquota(fs, USRQUOTA, &qfnp))
 211                                 errs += quotaonoff(fs, offmode, USRQUOTA, qfnp);
 212                 }
 213         }
 214         endfsent();
 215 #endif /* __APPLE__ */
 216         for (i = 0; i < argc; i++)
 217                 if ((done & (1 << i)) == 0)
 218                         fprintf(stderr, "%s not found in fstab\n",
 219                                 argv[i]);
 220         exit(errs);
 221 }
 222
 223 void usage(whoami)
 224         char *whoami;
 225 {
 226
 227         fprintf(stderr, "Usage:\n\t%s [-g] [-u] [-v] -a\n", whoami);
 228         fprintf(stderr, "\t%s [-g] [-u] [-v] filesys ...\n", whoami);
 229         exit(1);
 230 }
 231
 232 #ifdef __APPLE__
 233 int quotaonoff(fst, offmode, type, qfpathname)
 234         register struct statfs *fst;
 235         int offmode, type;
 236         char *qfpathname;
 237 {
 238         if (strcmp(fst->f_mntonname, "/") && (fst->f_flags & MNT_RDONLY))
 239                 return (1);
 240         if (offmode) {
 241                 if (quotactl(fst->f_mntonname, QCMD(Q_QUOTAOFF, type), 0, 0) < 0) {
 242                         fprintf(stderr, "quotaoff: ");
 243                         perror(fst->f_mntonname);
 244                         return (1);
 245                 }
 246                 if (vflag)
 247                   printf("%s: %s quotas turned off\n", fst->f_mntonname,
 248                                qfextension[type]);
 249                 return (0);
 250         }
 251         if (quotactl(fst->f_mntonname, QCMD(Q_QUOTAON, type), 0, qfpathname) < 0) {
 252                 fprintf(stderr, "quotaon: using %s on ", qfpathname);
 253                 perror(fst->f_mntonname);
 254                 return (1);
 255         }
 256         if (vflag)
 257                 printf("%s: %s quotas turned on\n", fst->f_mntonname,
 258                     qfextension[type]);
 259         return (0);
 260 }
 261 #else
 262 int quotaonoff(fs, offmode, type, qfpathname)
 263         register struct fstab *fs;
 264         int offmode, type;
 265         char *qfpathname;
 266 {
 267
 268         if (strcmp(fs->fs_file, "/") && readonly(fs))
 269                 return (1);
 270         if (offmode) {
 271                 if (quotactl(fs->fs_file, QCMD(Q_QUOTAOFF, type), 0, 0) < 0) {
 272                         fprintf(stderr, "quotaoff: ");
 273                         perror(fs->fs_file);
 274                         return (1);
 275                 }
 276                 if (vflag)
 277                         printf("%s: quotas turned off\n", fs->fs_file);
 278                 return (0);
 279         }
 280         if (quotactl(fs->fs_file, QCMD(Q_QUOTAON, type), 0, qfpathname) < 0) {
 281                 fprintf(stderr, "quotaon: using %s on", qfpathname);
 282                 perror(fs->fs_file);
 283                 return (1);
 284         }
 285         if (vflag)
 286                 printf("%s: %s quotas turned on\n", fs->fs_file,
 287                     qfextension[type]);
 288         return (0);
 289 }
 290 #endif /* __APPLE__ */
 291
 292 /*
 293  * Check to see if target appears in list of size cnt.
 294  */
 295 int oneof(target, list, cnt)
 296         register char *target, *list[];
 297         int cnt;
 298 {
 299         register int i;
 300
 301         for (i = 0; i < cnt; i++)
 302                 if (strcmp(target, list[i]) == 0)
 303                         return (i);
 304         return (-1);
 305 }
 306
 307 /*
 308  * Check to see if a particular quota is to be enabled.
 309  */
 310 #ifdef __APPLE__
 311 int hasquota(fst, type, qfnamep)
 312         register struct statfs *fst;
 313         int type;
 314         char **qfnamep;
 315 {
 316         struct stat sb;
 317         static char initname, usrname[100], grpname[100];
 318         static char buf[BUFSIZ];
 319
 320         if (!initname) {
 321                 snprintf(usrname, sizeof(usrname), "%s%s", qfextension[USRQUOTA], qfname);
 322                 snprintf(grpname, sizeof(grpname), "%s%s", qfextension[GRPQUOTA], qfname);
 323                 initname = 1;
 324         }
 325
 326         /*
 327           We only support the default path to the
 328           on disk quota files.
 329         */
 330
 331         (void)snprintf(buf, sizeof(buf), "%s/%s.%s", fst->f_mntonname,
 332                       QUOTAOPSNAME, qfextension[type] );
 333         if (stat(buf, &sb) != 0) {
 334           /* There appears to be no mount option file */
 335           return(0);
 336         }
 337
 338
 339         (void) snprintf(buf, sizeof(buf), "%s/%s.%s", fst->f_mntonname, qfname, qfextension[type]);
 340         *qfnamep = buf;
 341         return (1);
 342 }
 343 #else
 344 int hasquota(fs, type, qfnamep)
 345         register struct fstab *fs;
 346         int type;
 347         char **qfnamep;
 348 {
 349         register char *opt;
 350         char *cp, *index(), *strtok();
 351         static char initname, usrname[100], grpname[100];
 352         static char buf[BUFSIZ];
 353
 354         if (!initname) {
 355                 snprintf(usrname, sizeof(usrname), "%s%s", qfextension[USRQUOTA], qfname);
 356                 snprintf(grpname, sizeof(grpname), "%s%s", qfextension[GRPQUOTA], qfname);
 357                 initname = 1;
 358         }
 359         strlcpy(buf, fs->fs_mntops, sizeof(buf));
 360         for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) {
 361                 if (cp = index(opt, '='))
 362                         *cp++ = '\0';
 363                 if (type == USRQUOTA && strcmp(opt, usrname) == 0)
 364                         break;
 365                 if (type == GRPQUOTA && strcmp(opt, grpname) == 0)
 366                         break;
 367         }
 368         if (!opt)
 369                 return (0);
 370         if (cp) {
 371                 *qfnamep = cp;
 372                 return (1);
 373         }
 374         (void) snprintf(buf, sizeof(buf), "%s/%s.%s", fs->fs_file, qfname, qfextension[type]);
 375         *qfnamep = buf;
 376         return (1);
 377 }
 378 #endif /* __APPLE__ */
 379
 380
 381 /*
 382  * Verify file system is mounted and not readonly.
 383  */
 384 int readonly(fs)
 385         register struct fstab *fs;
 386 {
 387         struct statfs fsbuf;
 388
 389         if (statfs(fs->fs_file, &fsbuf) < 0 ||
 390             strcmp(fsbuf.f_mntonname, fs->fs_file) ||
 391             strcmp(fsbuf.f_mntfromname, fs->fs_spec)) {
 392                 printf("%s: not mounted\n", fs->fs_file);
 393                 return (1);
 394         }
 395         if (fsbuf.f_flags & MNT_RDONLY) {
 396                 printf("%s: mounted read-only\n", fs->fs_file);
 397                 return (1);
 398         }
 399         return (0);
 400 }