quotaon.c revision 1.10
1 /* $NetBSD: quotaon.c,v 1.10 1997/10/17 12:40:10 lukem 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 1.10 1997/10/17 12:40:10 lukem 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 #include <stdio.h> 61 #include <string.h> 62 #include <stdlib.h> 63 #include <fstab.h> 64 #include <err.h> 65 66 char *qfname = QUOTAFILENAME; 67 char *qfextension[] = INITQFNAMES; 68 69 int aflag; /* all file systems */ 70 int gflag; /* operate on group quotas */ 71 int uflag; /* operate on user quotas */ 72 int vflag; /* verbose */ 73 74 extern char *__progname; 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((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(__progname, "quotaoff") == 0) 96 offmode++; 97 else if (strcmp(__progname, "quotaon") != 0) 98 errx(1, "Name must be quotaon or quotaoff\n"); 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", __progname); 162 (void) fprintf(stderr, "\t%s [-g] [-u] [-v] filesys ...\n", __progname); 163 exit(1); 164 } 165 166 static int 167 quotaonoff(fs, offmode, type, qfpathname) 168 struct fstab *fs; 169 int offmode, type; 170 char *qfpathname; 171 { 172 173 if (strcmp(fs->fs_file, "/") && readonly(fs)) 174 return (1); 175 if (offmode) { 176 if (quotactl(fs->fs_file, QCMD(Q_QUOTAOFF, type), 0, 0) < 0) { 177 warn(fs->fs_file); 178 return (1); 179 } 180 if (vflag) 181 printf("%s: %s quotas turned off\n", 182 fs->fs_file, qfextension[type]); 183 return (0); 184 } 185 if (quotactl(fs->fs_file, QCMD(Q_QUOTAON, type), 0, qfpathname) < 0) { 186 warn("%s quotas using %s on %s", 187 qfextension[type], qfpathname, fs->fs_file); 188 return (1); 189 } 190 if (vflag) 191 printf("%s: %s quotas turned on\n", fs->fs_file, 192 qfextension[type]); 193 return (0); 194 } 195 196 /* 197 * Check to see if target appears in list of size cnt. 198 */ 199 static int 200 oneof(target, list, cnt) 201 char *target, *list[]; 202 int cnt; 203 { 204 int i; 205 206 for (i = 0; i < cnt; i++) 207 if (strcmp(target, list[i]) == 0) 208 return (i); 209 return (-1); 210 } 211 212 /* 213 * Check to see if a particular quota is to be enabled. 214 */ 215 static int 216 hasquota(fs, type, qfnamep) 217 struct fstab *fs; 218 int type; 219 char **qfnamep; 220 { 221 char *opt; 222 char *cp; 223 static char initname, usrname[100], grpname[100]; 224 static char buf[BUFSIZ]; 225 226 if (!initname) { 227 (void) snprintf(usrname, sizeof(usrname), "%s%s", 228 qfextension[USRQUOTA], qfname); 229 (void) snprintf(grpname, sizeof(grpname), "%s%s", 230 qfextension[GRPQUOTA], qfname); 231 initname = 1; 232 } 233 strcpy(buf, fs->fs_mntops); 234 for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) { 235 if ((cp = strchr(opt, '=')) != NULL) 236 *cp++ = '\0'; 237 if (type == USRQUOTA && strcmp(opt, usrname) == 0) 238 break; 239 if (type == GRPQUOTA && strcmp(opt, grpname) == 0) 240 break; 241 } 242 if (!opt) 243 return (0); 244 if (cp) { 245 *qfnamep = cp; 246 return (1); 247 } 248 (void) snprintf(buf, sizeof(buf), "%s/%s.%s", fs->fs_file, qfname, 249 qfextension[type]); 250 *qfnamep = buf; 251 return (1); 252 } 253 254 /* 255 * Verify file system is mounted and not readonly. 256 */ 257 static int 258 readonly(fs) 259 struct fstab *fs; 260 { 261 struct statfs fsbuf; 262 263 if (statfs(fs->fs_file, &fsbuf) < 0 || 264 strcmp(fsbuf.f_mntonname, fs->fs_file) || 265 strcmp(fsbuf.f_mntfromname, fs->fs_spec)) { 266 printf("%s: not mounted\n", fs->fs_file); 267 return (1); 268 } 269 if (fsbuf.f_flags & MNT_RDONLY) { 270 printf("%s: mounted read-only\n", fs->fs_file); 271 return (1); 272 } 273 return (0); 274 } 275
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