1 /* $NetBSD: quotaon.c,v 1.17 2002/07/20 08:40:20 grant Exp $ */ 2 3 /* 4 * Copyright (c) 1980, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Robert Elz at The University of Melbourne. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #ifndef lint 41 __COPYRIGHT("@(#) Copyright (c) 1980, 1990, 1993\n\ 42 The Regents of the University of California. All rights reserved.\n"); 43 #endif /* not lint */ 44 45 #ifndef lint 46 #if 0 47 static char sccsid[] = "@(#)quotaon.c 8.1 (Berkeley) 6/6/93"; 48 #else 49 __RCSID("$NetBSD: quotaon.c,v 1.17 2002/07/20 08:40:20 grant Exp $"); 50 #endif 51 #endif /* not lint */ 52 53 /* 54 * Turn quota on/off for a filesystem. 55 */ 56 #include <sys/param.h> 57 #include <sys/file.h> 58 #include <sys/mount.h> 59 #include <ufs/ufs/quota.h> 60 61 #include <err.h> 62 #include <fstab.h> 63 #include <stdio.h> 64 #include <stdlib.h> 65 #include <string.h> 66 #include <unistd.h> 67 68 char *qfname = QUOTAFILENAME; 69 char *qfextension[] = INITQFNAMES; 70 71 int aflag; /* all file systems */ 72 int gflag; /* operate on group quotas */ 73 int uflag; /* operate on user quotas */ 74 int vflag; /* verbose */ 75 76 int main __P((int, char *[])); 77 78 static void usage __P((void)); 79 static int quotaonoff __P((struct fstab *, int, int, char *)); 80 static int oneof __P((const char *, char *[], int)); 81 static int hasquota __P((struct fstab *, int, char **)); 82 static int readonly __P((struct fstab *)); 83 84 int 85 main(argc, argv) 86 int argc; 87 char *argv[]; 88 { 89 struct fstab *fs; 90 char *qfnp; 91 long argnum, done = 0; 92 int i, offmode = 0, errs = 0; 93 int ch; 94 95 if (strcmp(getprogname(), "quotaoff") == 0) 96 offmode++; 97 else if (strcmp(getprogname(), "quotaon") != 0) 98 errx(1, "Name must be quotaon or quotaoff"); 99 100 while ((ch = getopt(argc, argv, "avug")) != -1) { 101 switch(ch) { 102 case 'a': 103 aflag++; 104 break; 105 case 'g': 106 gflag++; 107 break; 108 case 'u': 109 uflag++; 110 break; 111 case 'v': 112 vflag++; 113 break; 114 default: 115 usage(); 116 break; 117 } 118 } 119 argc -= optind; 120 argv += optind; 121 122 if (argc <= 0 && !aflag) 123 usage(); 124 125 if (!gflag && !uflag) { 126 gflag++; 127 uflag++; 128 } 129 setfsent(); 130 while ((fs = getfsent()) != NULL) { 131 if (strcmp(fs->fs_vfstype, "ffs") || 132 strcmp(fs->fs_type, FSTAB_RW)) 133 continue; 134 if (aflag) { 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 continue; 140 } 141 if ((argnum = oneof(fs->fs_file, argv, argc)) >= 0 || 142 (argnum = oneof(fs->fs_spec, argv, argc)) >= 0) { 143 done |= 1 << argnum; 144 if (gflag && hasquota(fs, GRPQUOTA, &qfnp)) 145 errs += quotaonoff(fs, offmode, GRPQUOTA, qfnp); 146 if (uflag && hasquota(fs, USRQUOTA, &qfnp)) 147 errs += quotaonoff(fs, offmode, USRQUOTA, qfnp); 148 } 149 } 150 endfsent(); 151 for (i = 0; i < argc; i++) 152 if ((done & (1 << i)) == 0) 153 warnx("%s not found in fstab", argv[i]); 154 exit(errs); 155 } 156 157 static void 158 usage() 159 { 160 161 (void) fprintf(stderr, "Usage:\n\t%s [-g] [-u] [-v] -a\n", 162 getprogname()); 163 (void) fprintf(stderr, "\t%s [-g] [-u] [-v] filesys ...\n", 164 getprogname()); 165 exit(1); 166 } 167 168 static int 169 quotaonoff(fs, offmode, type, qfpathname) 170 struct fstab *fs; 171 int offmode, type; 172 char *qfpathname; 173 { 174 175 if (strcmp(fs->fs_file, "/") && readonly(fs)) 176 return (1); 177 if (offmode) { 178 if (quotactl(fs->fs_file, QCMD(Q_QUOTAOFF, type), 0, 0) < 0) { 179 warn("%s", fs->fs_file); 180 return (1); 181 } 182 if (vflag) 183 printf("%s: %s quotas turned off\n", 184 fs->fs_file, qfextension[type]); 185 return (0); 186 } 187 if (quotactl(fs->fs_file, QCMD(Q_QUOTAON, type), 0, qfpathname) < 0) { 188 warn("%s quotas using %s on %s", 189 qfextension[type], qfpathname, fs->fs_file); 190 return (1); 191 } 192 if (vflag) 193 printf("%s: %s quotas turned on\n", fs->fs_file, 194 qfextension[type]); 195 return (0); 196 } 197 198 /* 199 * Check to see if target appears in list of size cnt. 200 */ 201 static int 202 oneof(target, list, cnt) 203 const char *target; 204 char *list[]; 205 int cnt; 206 { 207 int i; 208 209 for (i = 0; i < cnt; i++) 210 if (strcmp(target, list[i]) == 0) 211 return (i); 212 return (-1); 213 } 214 215 /* 216 * Check to see if a particular quota is to be enabled. 217 */ 218 static int 219 hasquota(fs, type, qfnamep) 220 struct fstab *fs; 221 int type; 222 char **qfnamep; 223 { 224 char *opt; 225 char *cp = NULL; 226 static char initname, usrname[100], grpname[100]; 227 static char buf[BUFSIZ]; 228 229 if (!initname) { 230 (void) snprintf(usrname, sizeof(usrname), "%s%s", 231 qfextension[USRQUOTA], qfname); 232 (void) snprintf(grpname, sizeof(grpname), "%s%s", 233 qfextension[GRPQUOTA], qfname); 234 initname = 1; 235 } 236 strcpy(buf, fs->fs_mntops); 237 for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) { 238 if ((cp = strchr(opt, '=')) != NULL) 239 *cp++ = '\0'; 240 if (type == USRQUOTA && strcmp(opt, usrname) == 0) 241 break; 242 if (type == GRPQUOTA && strcmp(opt, grpname) == 0) 243 break; 244 } 245 if (!opt) 246 return (0); 247 if (cp) { 248 *qfnamep = cp; 249 return (1); 250 } 251 (void) snprintf(buf, sizeof(buf), "%s/%s.%s", fs->fs_file, qfname, 252 qfextension[type]); 253 *qfnamep = buf; 254 return (1); 255 } 256 257 /* 258 * Verify file system is mounted and not readonly. 259 */ 260 static int 261 readonly(fs) 262 struct fstab *fs; 263 { 264 struct statfs fsbuf; 265 266 if (statfs(fs->fs_file, &fsbuf) < 0 || 267 strcmp(fsbuf.f_mntonname, fs->fs_file) || 268 strcmp(fsbuf.f_mntfromname, fs->fs_spec)) { 269 printf("%s: not mounted\n", fs->fs_file); 270 return (1); 271 } 272 if (fsbuf.f_flags & MNT_RDONLY) { 273 printf("%s: mounted read-only\n", fs->fs_file); 274 return (1); 275 } 276 return (0); 277 } 278