1 /* $NetBSD: quotaon.c,v 1.29 2012/01/30 16:45:13 dholland 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 1.29 2012/01/30 16:45:13 dholland 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 67 68 static int vflag; /* verbose */ 69 70 static void usage(void) __dead; 71 static int quotaonoff(struct fstab *, struct quotahandle *, int, int, int); 72 static int readonly(struct fstab *); 73 static int oneof(const char *target, char *list[], int cnt); 74 75 int 76 main(int argc, char *argv[]) 77 { 78 struct fstab *fs; 79 struct quotahandle *qh; 80 long argnum, done = 0; 81 int i, offmode = 0, errs = 0; 82 unsigned restrictions; 83 int ch; 84 85 int aflag = 0; /* all file systems */ 86 int gflag = 0; /* operate on group quotas */ 87 int uflag = 0; /* operate on user quotas */ 88 int noguflag = 0; /* operate on both (by default) */ 89 90 if (strcmp(getprogname(), "quotaoff") == 0) 91 offmode++; 92 else if (strcmp(getprogname(), "quotaon") != 0) 93 errx(1, "Name must be quotaon or quotaoff"); 94 95 while ((ch = getopt(argc, argv, "avug")) != -1) { 96 switch(ch) { 97 case 'a': 98 aflag++; 99 break; 100 case 'g': 101 gflag++; 102 break; 103 case 'u': 104 uflag++; 105 break; 106 case 'v': 107 vflag++; 108 break; 109 default: 110 usage(); 111 break; 112 } 113 } 114 argc -= optind; 115 argv += optind; 116 117 if (argc <= 0 && !aflag) 118 usage(); 119 120 if (!gflag && !uflag) { 121 noguflag = 1; 122 } 123 124 /* 125 * XXX at the moment quota_open also uses getfsent(), but it 126 * uses it only up front. To avoid conflicting with it, let it 127 * initialize first. 128 */ 129 qh = quota_open("/"); 130 if (qh != NULL) { 131 quota_close(qh); 132 } 133 134 setfsent(); 135 while ((fs = getfsent()) != NULL) { 136 if ((strcmp(fs->fs_vfstype, "ffs") && 137 strcmp(fs->fs_vfstype, "lfs")) || 138 strcmp(fs->fs_type, FSTAB_RW)) 139 continue; 140 141 if (!aflag) { 142 if ((argnum = oneof(fs->fs_file, argv, argc)) < 0 && 143 (argnum = oneof(fs->fs_spec, argv, argc)) < 0) { 144 continue; 145 } 146 done |= 1U << argnum; 147 } 148 149 qh = quota_open(fs->fs_file); 150 if (qh == NULL) { 151 if (!aflag) { 152 warn("quota_open"); 153 errs++; 154 } 155 continue; 156 } 157 158 restrictions = quota_getrestrictions(qh); 159 if ((restrictions & QUOTA_RESTRICT_NEEDSQUOTACHECK) == 0) { 160 /* Not a quota v1 volume, skip it */ 161 if (!aflag) { 162 errno = EBUSY; 163 warn("%s", fs->fs_file); 164 errs++; 165 } 166 quota_close(qh); 167 continue; 168 } 169 170 /* 171 * The idea here is to warn if someone explicitly 172 * tries to turn on group quotas and there are no 173 * group quotas, and likewise for user quotas, but not 174 * to warn if just doing the default thing and one of 175 * the quota types isn't configured. 176 */ 177 178 if (noguflag) { 179 errs += quotaonoff(fs, qh, offmode, GRPQUOTA, 0); 180 errs += quotaonoff(fs, qh, offmode, USRQUOTA, 0); 181 } 182 if (gflag) { 183 errs += quotaonoff(fs, qh, offmode, GRPQUOTA, 1); 184 } 185 if (uflag) { 186 errs += quotaonoff(fs, qh, offmode, USRQUOTA, 1); 187 } 188 quota_close(qh); 189 } 190 endfsent(); 191 for (i = 0; i < argc; i++) 192 if ((done & (1U << i)) == 0) 193 warnx("%s not found in fstab", argv[i]); 194 return errs; 195 } 196 197 static void 198 usage(void) 199 { 200 const char *p = getprogname(); 201 (void) fprintf(stderr, "Usage: %s [-g] [-u] [-v] -a\n" 202 "\t%s [-g] [-u] [-v] filesys ...\n", p, p); 203 exit(1); 204 } 205 206 static int 207 quotaonoff(struct fstab *fs, struct quotahandle *qh, int offmode, int idtype, 208 int warn_on_enxio) 209 { 210 const char *mode = (offmode == 1) ? "off" : "on"; 211 212 if (strcmp(fs->fs_file, "/") && readonly(fs)) { 213 return 1; 214 } 215 216 if (offmode) { 217 if (quota_quotaoff(qh, idtype)) { 218 if (warn_on_enxio || errno != ENXIO) { 219 warn("quota%s for %s", mode, fs->fs_file); 220 } 221 return 1; 222 } 223 } else { 224 if (quota_quotaon(qh, idtype)) { 225 if (warn_on_enxio || errno != ENXIO) { 226 warn("quota%s for %s", mode, fs->fs_file); 227 } 228 return 1; 229 } 230 } 231 232 if (vflag) { 233 printf("%s: %s quotas turned %s\n", 234 fs->fs_file, quota_idtype_getname(qh, idtype), mode); 235 } 236 return 0; 237 } 238 239 /* 240 * Verify file system is mounted and not readonly. 241 */ 242 static int 243 readonly(struct fstab *fs) 244 { 245 struct statvfs fsbuf; 246 247 if (statvfs(fs->fs_file, &fsbuf) < 0 || 248 strcmp(fsbuf.f_mntonname, fs->fs_file) || 249 strcmp(fsbuf.f_mntfromname, fs->fs_spec)) { 250 printf("%s: not mounted\n", fs->fs_file); 251 return 1; 252 } 253 if (fsbuf.f_flag & MNT_RDONLY) { 254 printf("%s: mounted read-only\n", fs->fs_file); 255 return 1; 256 } 257 return 0; 258 } 259 260 /* 261 * Check to see if target appears in list of size cnt. 262 */ 263 static int 264 oneof(const char *target, char *list[], int cnt) 265 { 266 int i; 267 268 for (i = 0; i < cnt; i++) 269 if (strcmp(target, list[i]) == 0) 270 return i; 271 return -1; 272 } 273