quotaon.c revision 99822
1/* 2 * Copyright (c) 1980, 1990, 1993 3 * The Regents of the University of California. 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, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37#ifndef lint 38static const char copyright[] = 39"@(#) Copyright (c) 1980, 1990, 1993\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41#endif /* not lint */ 42 43#ifndef lint 44#if 0 45static char sccsid[] = "@(#)quotaon.c 8.1 (Berkeley) 6/6/93"; 46#endif 47static const char rcsid[] = 48 "$FreeBSD: head/usr.sbin/quotaon/quotaon.c 99822 2002-07-11 21:26:41Z alfred $"; 49#endif /* not lint */ 50 51/* 52 * Turn quota on/off for a filesystem. 53 */ 54#include <sys/param.h> 55#include <sys/file.h> 56#include <sys/mount.h> 57#include <ufs/ufs/quota.h> 58#include <err.h> 59#include <fstab.h> 60#include <stdio.h> 61#include <stdlib.h> 62#include <string.h> 63#include <unistd.h> 64 65const char *qfname = QUOTAFILENAME; 66const char *qfextension[] = INITQFNAMES; 67 68int aflag; /* all filesystems */ 69int gflag; /* operate on group quotas */ 70int uflag; /* operate on user quotas */ 71int vflag; /* verbose */ 72 73int hasquota(struct fstab *, int, char **); 74int oneof(char *, char *[], int); 75int quotaonoff(struct fstab *fs, int, int, char *); 76int readonly(struct fstab *); 77static void usage(void); 78 79int 80main(int argc, char **argv) 81{ 82 register struct fstab *fs; 83 char ch, *qfnp, *whoami; 84 long argnum, done = 0; 85 int i, offmode = 0, errs = 0; 86 87 whoami = rindex(*argv, '/') + 1; 88 if (whoami == (char *)1) 89 whoami = *argv; 90 if (strcmp(whoami, "quotaoff") == 0) 91 offmode++; 92 else if (strcmp(whoami, "quotaon") != 0) 93 errx(1, "name must be quotaon or quotaoff"); 94 while ((ch = getopt(argc, argv, "avug")) != -1) { 95 switch(ch) { 96 case 'a': 97 aflag++; 98 break; 99 case 'g': 100 gflag++; 101 break; 102 case 'u': 103 uflag++; 104 break; 105 case 'v': 106 vflag++; 107 break; 108 default: 109 usage(); 110 } 111 } 112 argc -= optind; 113 argv += optind; 114 if (argc <= 0 && !aflag) 115 usage(); 116 if (!gflag && !uflag) { 117 gflag++; 118 uflag++; 119 } 120 setfsent(); 121 while ((fs = getfsent()) != NULL) { 122 if (strcmp(fs->fs_vfstype, "ufs") || 123 strcmp(fs->fs_type, FSTAB_RW)) 124 continue; 125 if (aflag) { 126 if (gflag && hasquota(fs, GRPQUOTA, &qfnp)) 127 errs += quotaonoff(fs, offmode, GRPQUOTA, qfnp); 128 if (uflag && hasquota(fs, USRQUOTA, &qfnp)) 129 errs += quotaonoff(fs, offmode, USRQUOTA, qfnp); 130 continue; 131 } 132 if ((argnum = oneof(fs->fs_file, argv, argc)) >= 0 || 133 (argnum = oneof(fs->fs_spec, argv, argc)) >= 0) { 134 done |= 1 << argnum; 135 if (gflag && hasquota(fs, GRPQUOTA, &qfnp)) 136 errs += quotaonoff(fs, offmode, GRPQUOTA, qfnp); 137 if (uflag && hasquota(fs, USRQUOTA, &qfnp)) 138 errs += quotaonoff(fs, offmode, USRQUOTA, qfnp); 139 } 140 } 141 endfsent(); 142 for (i = 0; i < argc; i++) 143 if ((done & (1 << i)) == 0) 144 warnx("%s not found in fstab", argv[i]); 145 exit(errs); 146} 147 148static void 149usage() 150{ 151 152 fprintf(stderr, "%s\n%s\n%s\n%s\n", 153 "usage: quotaon [-g] [-u] [-v] -a", 154 " quotaon [-g] [-u] [-v] filesystem ...", 155 " quotaoff [-g] [-u] [-v] -a", 156 " quotaoff [-g] [-u] [-v] filesystem ..."); 157 exit(1); 158} 159 160int 161quotaonoff(fs, offmode, type, qfpathname) 162 register struct fstab *fs; 163 int offmode, type; 164 char *qfpathname; 165{ 166 167 if (strcmp(fs->fs_file, "/") && readonly(fs)) 168 return (1); 169 if (offmode) { 170 if (quotactl(fs->fs_file, QCMD(Q_QUOTAOFF, type), 0, 0) < 0) { 171 warn("%s", fs->fs_file); 172 return (1); 173 } 174 if (vflag) 175 printf("%s: quotas turned off\n", fs->fs_file); 176 return (0); 177 } 178 if (quotactl(fs->fs_file, QCMD(Q_QUOTAON, type), 0, qfpathname) < 0) { 179 warnx("using %s on", qfpathname); 180 warn("%s", fs->fs_file); 181 return (1); 182 } 183 if (vflag) 184 printf("%s: %s quotas turned on\n", fs->fs_file, 185 qfextension[type]); 186 return (0); 187} 188 189/* 190 * Check to see if target appears in list of size cnt. 191 */ 192int 193oneof(target, list, cnt) 194 register char *target, *list[]; 195 int cnt; 196{ 197 register int i; 198 199 for (i = 0; i < cnt; i++) 200 if (strcmp(target, list[i]) == 0) 201 return (i); 202 return (-1); 203} 204 205/* 206 * Check to see if a particular quota is to be enabled. 207 */ 208int 209hasquota(fs, type, qfnamep) 210 register struct fstab *fs; 211 int type; 212 char **qfnamep; 213{ 214 register char *opt; 215 char *cp; 216 static char initname, usrname[100], grpname[100]; 217 static char buf[BUFSIZ]; 218 219 if (!initname) { 220 sprintf(usrname, "%s%s", qfextension[USRQUOTA], qfname); 221 sprintf(grpname, "%s%s", qfextension[GRPQUOTA], qfname); 222 initname = 1; 223 } 224 strcpy(buf, fs->fs_mntops); 225 for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) { 226 if ((cp = index(opt, '='))) 227 *cp++ = '\0'; 228 if (type == USRQUOTA && strcmp(opt, usrname) == 0) 229 break; 230 if (type == GRPQUOTA && strcmp(opt, grpname) == 0) 231 break; 232 } 233 if (!opt) 234 return (0); 235 if (cp) { 236 *qfnamep = cp; 237 return (1); 238 } 239 (void) sprintf(buf, "%s/%s.%s", fs->fs_file, qfname, qfextension[type]); 240 *qfnamep = buf; 241 return (1); 242} 243 244/* 245 * Verify filesystem is mounted and not readonly. 246 */ 247int 248readonly(fs) 249 register struct fstab *fs; 250{ 251 struct statfs fsbuf; 252 253 if (statfs(fs->fs_file, &fsbuf) < 0 || 254 strcmp(fsbuf.f_mntonname, fs->fs_file) || 255 strcmp(fsbuf.f_mntfromname, fs->fs_spec)) { 256 printf("%s: not mounted\n", fs->fs_file); 257 return (1); 258 } 259 if (fsbuf.f_flags & MNT_RDONLY) { 260 printf("%s: mounted read-only\n", fs->fs_file); 261 return (1); 262 } 263 return (0); 264} 265