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 * @(#) Copyright (c) 1980, 1990, 1993 The Regents of the University of California. All rights reserved. 37 * @(#)quotaon.c 8.1 (Berkeley) 6/6/93 38 * $FreeBSD: src/usr.sbin/quotaon/quotaon.c,v 1.4.2.1 2001/07/19 05:17:06 kris Exp $ 39 * $DragonFly: src/usr.sbin/quotaon/quotaon.c,v 1.8 2005/03/18 00:52:49 joerg Exp $ 40 */ 41 42 /* 43 * Turn quota on/off for a filesystem. 44 */ 45 #include <sys/param.h> 46 #include <sys/file.h> 47 #include <sys/mount.h> 48 #include <vfs/ufs/quota.h> 49 #include <err.h> 50 #include <fstab.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <unistd.h> 55 56 const char *qfname = QUOTAFILENAME; 57 const char *qfextension[] = INITQFNAMES; 58 59 int aflag; /* all file systems */ 60 int gflag; /* operate on group quotas */ 61 int uflag; /* operate on user quotas */ 62 int vflag; /* verbose */ 63 64 int hasquota(struct fstab *, int, char **); 65 int oneof(char *, char *[], int); 66 int quotaonoff(struct fstab *fs, int, int, char *); 67 int readonly(struct fstab *); 68 static void usage(void); 69 70 int 71 main(int argc, char **argv) 72 { 73 struct fstab *fs; 74 char ch, *qfnp, *whoami; 75 long argnum, done = 0; 76 int i, offmode = 0, errs = 0; 77 78 whoami = strrchr(*argv, '/') + 1; 79 if (whoami == (char *)1) 80 whoami = *argv; 81 if (strcmp(whoami, "quotaoff") == 0) 82 offmode++; 83 else if (strcmp(whoami, "quotaon") != 0) 84 errx(1, "name must be quotaon or quotaoff"); 85 while ((ch = getopt(argc, argv, "avug")) != -1) { 86 switch(ch) { 87 case 'a': 88 aflag++; 89 break; 90 case 'g': 91 gflag++; 92 break; 93 case 'u': 94 uflag++; 95 break; 96 case 'v': 97 vflag++; 98 break; 99 default: 100 usage(); 101 } 102 } 103 argc -= optind; 104 argv += optind; 105 if (argc <= 0 && !aflag) 106 usage(); 107 if (!gflag && !uflag) { 108 gflag++; 109 uflag++; 110 } 111 setfsent(); 112 while ((fs = getfsent()) != NULL) { 113 if (strcmp(fs->fs_vfstype, "ufs") || 114 strcmp(fs->fs_type, FSTAB_RW)) 115 continue; 116 if (aflag) { 117 if (gflag && hasquota(fs, GRPQUOTA, &qfnp)) 118 errs += quotaonoff(fs, offmode, GRPQUOTA, qfnp); 119 if (uflag && hasquota(fs, USRQUOTA, &qfnp)) 120 errs += quotaonoff(fs, offmode, USRQUOTA, qfnp); 121 continue; 122 } 123 if ((argnum = oneof(fs->fs_file, argv, argc)) >= 0 || 124 (argnum = oneof(fs->fs_spec, argv, argc)) >= 0) { 125 done |= 1 << argnum; 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 } 131 } 132 endfsent(); 133 for (i = 0; i < argc; i++) 134 if ((done & (1 << i)) == 0) 135 warnx("%s not found in fstab", argv[i]); 136 exit(errs); 137 } 138 139 static void 140 usage(void) 141 { 142 fprintf(stderr, "%s\n%s\n%s\n%s\n", 143 "usage: quotaon [-g] [-u] [-v] -a", 144 " quotaon [-g] [-u] [-v] filesystem ...", 145 " quotaoff [-g] [-u] [-v] -a", 146 " quotaoff [-g] [-u] [-v] filesystem ..."); 147 exit(1); 148 } 149 150 int 151 quotaonoff(struct fstab *fs, int offmode, int type, char *qfpathname) 152 { 153 if (strcmp(fs->fs_file, "/") && readonly(fs)) 154 return (1); 155 if (offmode) { 156 if (quotactl(fs->fs_file, QCMD(Q_QUOTAOFF, type), 0, 0) < 0) { 157 warn("%s", fs->fs_file); 158 return (1); 159 } 160 if (vflag) 161 printf("%s: quotas turned off\n", fs->fs_file); 162 return (0); 163 } 164 if (quotactl(fs->fs_file, QCMD(Q_QUOTAON, type), 0, qfpathname) < 0) { 165 warnx("using %s on", qfpathname); 166 warn("%s", fs->fs_file); 167 return (1); 168 } 169 if (vflag) 170 printf("%s: %s quotas turned on\n", fs->fs_file, 171 qfextension[type]); 172 return (0); 173 } 174 175 /* 176 * Check to see if target appears in list of size cnt. 177 */ 178 int 179 oneof(char *target, char *list[], int cnt) 180 { 181 int i; 182 183 for (i = 0; i < cnt; i++) 184 if (strcmp(target, list[i]) == 0) 185 return (i); 186 return (-1); 187 } 188 189 /* 190 * Check to see if a particular quota is to be enabled. 191 */ 192 int 193 hasquota(struct fstab *fs, int type, char **qfnamep) 194 { 195 char *opt; 196 char *cp; 197 static char initname, usrname[100], grpname[100]; 198 static char buf[BUFSIZ]; 199 200 if (!initname) { 201 sprintf(usrname, "%s%s", qfextension[USRQUOTA], qfname); 202 sprintf(grpname, "%s%s", qfextension[GRPQUOTA], qfname); 203 initname = 1; 204 } 205 strcpy(buf, fs->fs_mntops); 206 for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) { 207 if ((cp = strchr(opt, '='))) 208 *cp++ = '\0'; 209 if (type == USRQUOTA && strcmp(opt, usrname) == 0) 210 break; 211 if (type == GRPQUOTA && strcmp(opt, grpname) == 0) 212 break; 213 } 214 if (!opt) 215 return (0); 216 if (cp) { 217 *qfnamep = cp; 218 return (1); 219 } 220 sprintf(buf, "%s/%s.%s", fs->fs_file, qfname, qfextension[type]); 221 *qfnamep = buf; 222 return (1); 223 } 224 225 /* 226 * Verify file system is mounted and not readonly. 227 */ 228 int 229 readonly(struct fstab *fs) 230 { 231 struct statfs fsbuf; 232 233 if (statfs(fs->fs_file, &fsbuf) < 0 || 234 strcmp(fsbuf.f_mntonname, fs->fs_file) || 235 strcmp(fsbuf.f_mntfromname, fs->fs_spec)) { 236 printf("%s: not mounted\n", fs->fs_file); 237 return (1); 238 } 239 if (fsbuf.f_flags & MNT_RDONLY) { 240 printf("%s: mounted read-only\n", fs->fs_file); 241 return (1); 242 } 243 return (0); 244 } 245