1 /* $NetBSD: quotaon.c,v 1.31 2022/04/26 15:39:00 hannken 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 #ifndef lint 37 __COPYRIGHT("@(#) Copyright (c) 1980, 1990, 1993\ 38 The Regents of the University of California. All rights reserved."); 39 #endif /* not lint */ 40 41 #ifndef lint 42 #if 0 43 static char sccsid[] = "@(#)quotaon.c 8.1 (Berkeley) 6/6/93"; 44 #else 45 __RCSID("$NetBSD: quotaon.c,v 1.31 2022/04/26 15:39:00 hannken Exp $"); 46 #endif 47 #endif /* not lint */ 48 49 /* 50 * Turn quota on/off for a filesystem. 51 */ 52 #include <sys/param.h> 53 #include <sys/file.h> 54 #include <sys/mount.h> 55 56 #include <quota.h> 57 #include <ufs/ufs/quota1.h> 58 59 #include <err.h> 60 #include <fstab.h> 61 #include <stdio.h> 62 #include <errno.h> 63 #include <stdlib.h> 64 #include <string.h> 65 #include <unistd.h> 66 #include <util.h> 67 68 69 static int vflag; /* verbose */ 70 71 static void usage(void) __dead; 72 static int quotaonoff(struct fstab *, struct quotahandle *, int, int, int, 73 const char *); 74 static int readonly(struct fstab *, const char *); 75 static int oneof(const char *target, char *list[], int cnt); 76 77 int 78 main(int argc, char *argv[]) 79 { 80 struct fstab *fs; 81 struct quotahandle *qh; 82 long argnum, done = 0; 83 int i, offmode = 0, errs = 0; 84 unsigned restrictions; 85 int ch; 86 87 int aflag = 0; /* all file systems */ 88 int gflag = 0; /* operate on group quotas */ 89 int uflag = 0; /* operate on user quotas */ 90 int noguflag = 0; /* operate on both (by default) */ 91 92 if (strcmp(getprogname(), "quotaoff") == 0) 93 offmode++; 94 else if (strcmp(getprogname(), "quotaon") != 0) 95 errx(1, "Name must be quotaon or quotaoff"); 96 97 while ((ch = getopt(argc, argv, "avug")) != -1) { 98 switch(ch) { 99 case 'a': 100 aflag++; 101 break; 102 case 'g': 103 gflag++; 104 break; 105 case 'u': 106 uflag++; 107 break; 108 case 'v': 109 vflag++; 110 break; 111 default: 112 usage(); 113 break; 114 } 115 } 116 argc -= optind; 117 argv += optind; 118 119 if (argc <= 0 && !aflag) 120 usage(); 121 122 if (!gflag && !uflag) { 123 noguflag = 1; 124 } 125 126 /* 127 * XXX at the moment quota_open also uses getfsent(), but it 128 * uses it only up front. To avoid conflicting with it, let it 129 * initialize first. 130 */ 131 qh = quota_open("/"); 132 if (qh != NULL) { 133 quota_close(qh); 134 } 135 136 setfsent(); 137 while ((fs = getfsent()) != NULL) { 138 char buf[MAXPATHLEN]; 139 const char *fsspec; 140 if ((strcmp(fs->fs_vfstype, "ffs") && 141 strcmp(fs->fs_vfstype, "lfs")) || 142 strcmp(fs->fs_type, FSTAB_RW)) 143 continue; 144 145 fsspec = getfsspecname(buf, sizeof(buf), fs->fs_spec); 146 if (fsspec == NULL) { 147 warn("%s", buf); 148 continue; 149 } 150 if (!aflag) { 151 if ((argnum = oneof(fs->fs_file, argv, argc)) < 0 && 152 (argnum = oneof(fsspec, argv, argc)) < 0) { 153 continue; 154 } 155 done |= 1U << argnum; 156 } 157 158 qh = quota_open(fs->fs_file); 159 if (qh == NULL) { 160 if (!aflag) { 161 warn("quota_open"); 162 errs++; 163 } 164 continue; 165 } 166 167 restrictions = quota_getrestrictions(qh); 168 if ((restrictions & QUOTA_RESTRICT_NEEDSQUOTACHECK) == 0) { 169 /* Not a quota v1 volume, skip it */ 170 if (!aflag) { 171 errno = EBUSY; 172 warn("%s", fs->fs_file); 173 errs++; 174 } 175 quota_close(qh); 176 continue; 177 } 178 179 /* 180 * The idea here is to warn if someone explicitly 181 * tries to turn on group quotas and there are no 182 * group quotas, and likewise for user quotas, but not 183 * to warn if just doing the default thing and one of 184 * the quota types isn't configured. 185 */ 186 187 if (noguflag) { 188 errs += quotaonoff(fs, qh, offmode, GRPQUOTA, 0, fsspec); 189 errs += quotaonoff(fs, qh, offmode, USRQUOTA, 0, fsspec); 190 } 191 if (gflag) { 192 errs += quotaonoff(fs, qh, offmode, GRPQUOTA, 1, fsspec); 193 } 194 if (uflag) { 195 errs += quotaonoff(fs, qh, offmode, USRQUOTA, 1, fsspec); 196 } 197 quota_close(qh); 198 } 199 endfsent(); 200 for (i = 0; i < argc; i++) 201 if ((done & (1U << i)) == 0) 202 warnx("%s not found in fstab", argv[i]); 203 return errs; 204 } 205 206 static void 207 usage(void) 208 { 209 const char *p = getprogname(); 210 (void) fprintf(stderr, "Usage: %s [-g] [-u] [-v] -a\n" 211 "\t%s [-g] [-u] [-v] filesys ...\n", p, p); 212 exit(1); 213 } 214 215 static int 216 quotaonoff(struct fstab *fs, struct quotahandle *qh, int offmode, int idtype, 217 int warn_on_enxio, const char *fsspec) 218 { 219 const char *mode = (offmode == 1) ? "off" : "on"; 220 const char *type; 221 222 if (strcmp(fs->fs_file, "/") && readonly(fs, fsspec)) { 223 return 1; 224 } 225 226 if (offmode) { 227 type = quota_idtype_getname(qh, idtype); 228 if (quota_quotaoff(qh, idtype)) { 229 if (warn_on_enxio || errno != ENXIO) { 230 warn("quota%s for %s", mode, fs->fs_file); 231 } 232 return 1; 233 } 234 } else { 235 if (quota_quotaon(qh, idtype)) { 236 if (warn_on_enxio || errno != ENXIO) { 237 warn("quota%s for %s", mode, fs->fs_file); 238 } 239 return 1; 240 } 241 type = quota_idtype_getname(qh, idtype); 242 } 243 244 if (vflag) { 245 printf("%s: %s quotas turned %s\n", 246 fs->fs_file, type, mode); 247 } 248 return 0; 249 } 250 251 /* 252 * Verify file system is mounted and not readonly. 253 */ 254 static int 255 readonly(struct fstab *fs, const char *fsspec) 256 { 257 struct statvfs fsbuf; 258 259 if (statvfs(fs->fs_file, &fsbuf) < 0 || 260 strcmp(fsbuf.f_mntonname, fs->fs_file) || 261 strcmp(fsbuf.f_mntfromname, fsspec)) { 262 printf("%s: not mounted\n", fs->fs_file); 263 return 1; 264 } 265 if (fsbuf.f_flag & MNT_RDONLY) { 266 printf("%s: mounted read-only\n", fs->fs_file); 267 return 1; 268 } 269 return 0; 270 } 271 272 /* 273 * Check to see if target appears in list of size cnt. 274 */ 275 static int 276 oneof(const char *target, char *list[], int cnt) 277 { 278 int i; 279 280 for (i = 0; i < cnt; i++) 281 if (strcmp(target, list[i]) == 0) 282 return i; 283 return -1; 284 } 285
Indexes created Thu Oct 02 01:09:59 GMT 2025