quotaon.c revision 180187
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 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33#if 0 34#ifndef lint 35static const char copyright[] = 36"@(#) Copyright (c) 1980, 1990, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38#endif /* not lint */ 39 40#ifndef lint 41static char sccsid[] = "@(#)quotaon.c 8.1 (Berkeley) 6/6/93"; 42#endif /* not lint */ 43#endif 44#include <sys/cdefs.h> 45__FBSDID("$FreeBSD: head/usr.sbin/quotaon/quotaon.c 180187 2008-07-02 15:51:59Z des $"); 46 47/* 48 * Turn quota on/off for a filesystem. 49 */ 50#include <sys/param.h> 51#include <sys/file.h> 52#include <sys/mount.h> 53#include <ufs/ufs/quota.h> 54#include <err.h> 55#include <fstab.h> 56#include <stdio.h> 57#include <stdlib.h> 58#include <string.h> 59#include <unistd.h> 60 61const char *qfname = QUOTAFILENAME; 62const char *qfextension[] = INITQFNAMES; 63 64int aflag; /* all filesystems */ 65int gflag; /* operate on group quotas */ 66int uflag; /* operate on user quotas */ 67int vflag; /* verbose */ 68 69int hasquota(struct fstab *, int, char **); 70int oneof(char *, char *[], int); 71int quotaonoff(struct fstab *fs, int, int, char *); 72int readonly(struct fstab *); 73static void usage(void); 74 75int 76main(int argc, char **argv) 77{ 78 struct fstab *fs; 79 char *qfnp, *whoami; 80 long argnum, done = 0; 81 int ch, i, offmode = 0, errs = 0; 82 83 whoami = rindex(*argv, '/') + 1; 84 if (whoami == (char *)1) 85 whoami = *argv; 86 if (strcmp(whoami, "quotaoff") == 0) 87 offmode++; 88 else if (strcmp(whoami, "quotaon") != 0) 89 errx(1, "name must be quotaon or quotaoff"); 90 while ((ch = getopt(argc, argv, "avug")) != -1) { 91 switch(ch) { 92 case 'a': 93 aflag++; 94 break; 95 case 'g': 96 gflag++; 97 break; 98 case 'u': 99 uflag++; 100 break; 101 case 'v': 102 vflag++; 103 break; 104 default: 105 usage(); 106 } 107 } 108 argc -= optind; 109 argv += optind; 110 if (argc <= 0 && !aflag) 111 usage(); 112 if (!gflag && !uflag) { 113 gflag++; 114 uflag++; 115 } 116 setfsent(); 117 while ((fs = getfsent()) != NULL) { 118 if (strcmp(fs->fs_vfstype, "ufs") || 119 strcmp(fs->fs_type, FSTAB_RW)) 120 continue; 121 if (aflag) { 122 if (gflag && hasquota(fs, GRPQUOTA, &qfnp)) 123 errs += quotaonoff(fs, offmode, GRPQUOTA, qfnp); 124 if (uflag && hasquota(fs, USRQUOTA, &qfnp)) 125 errs += quotaonoff(fs, offmode, USRQUOTA, qfnp); 126 continue; 127 } 128 if ((argnum = oneof(fs->fs_file, argv, argc)) >= 0 || 129 (argnum = oneof(fs->fs_spec, argv, argc)) >= 0) { 130 done |= 1 << argnum; 131 if (gflag && hasquota(fs, GRPQUOTA, &qfnp)) 132 errs += quotaonoff(fs, offmode, GRPQUOTA, qfnp); 133 if (uflag && hasquota(fs, USRQUOTA, &qfnp)) 134 errs += quotaonoff(fs, offmode, USRQUOTA, qfnp); 135 } 136 } 137 endfsent(); 138 for (i = 0; i < argc; i++) 139 if ((done & (1 << i)) == 0) 140 warnx("%s not found in fstab", argv[i]); 141 exit(errs); 142} 143 144static void 145usage(void) 146{ 147 148 fprintf(stderr, "%s\n%s\n%s\n%s\n", 149 "usage: quotaon [-g] [-u] [-v] -a", 150 " quotaon [-g] [-u] [-v] filesystem ...", 151 " quotaoff [-g] [-u] [-v] -a", 152 " quotaoff [-g] [-u] [-v] filesystem ..."); 153 exit(1); 154} 155 156int 157quotaonoff(fs, offmode, type, qfpathname) 158 register struct fstab *fs; 159 int offmode, type; 160 char *qfpathname; 161{ 162 163 if (strcmp(fs->fs_file, "/") && readonly(fs)) 164 return (1); 165 if (offmode) { 166 if (quotactl(fs->fs_file, QCMD(Q_QUOTAOFF, type), 0, 0) < 0) { 167 warn("%s", fs->fs_file); 168 return (1); 169 } 170 if (vflag) 171 printf("%s: quotas turned off\n", fs->fs_file); 172 return (0); 173 } 174 if (quotactl(fs->fs_file, QCMD(Q_QUOTAON, type), 0, qfpathname) < 0) { 175 warnx("using %s on", qfpathname); 176 warn("%s", fs->fs_file); 177 return (1); 178 } 179 if (vflag) 180 printf("%s: %s quotas turned on with data file %s\n", 181 fs->fs_file, qfextension[type], qfpathname); 182 return (0); 183} 184 185/* 186 * Check to see if target appears in list of size cnt. 187 */ 188int 189oneof(char *target, char *list[], int cnt) 190{ 191 int i; 192 193 for (i = 0; i < cnt; i++) 194 if (strcmp(target, list[i]) == 0) 195 return (i); 196 return (-1); 197} 198 199/* 200 * Check to see if a particular quota is to be enabled. 201 */ 202int 203hasquota(struct fstab *fs, int type, char **qfnamep) 204{ 205 char *opt; 206 char *cp; 207 struct statfs sfb; 208 static char initname, usrname[100], grpname[100]; 209 static char buf[BUFSIZ]; 210 211 if (!initname) { 212 (void)snprintf(usrname, sizeof(usrname), "%s%s", 213 qfextension[USRQUOTA], qfname); 214 (void)snprintf(grpname, sizeof(grpname), "%s%s", 215 qfextension[GRPQUOTA], qfname); 216 initname = 1; 217 } 218 strcpy(buf, fs->fs_mntops); 219 for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) { 220 if ((cp = index(opt, '='))) 221 *cp++ = '\0'; 222 if (type == USRQUOTA && strcmp(opt, usrname) == 0) 223 break; 224 if (type == GRPQUOTA && strcmp(opt, grpname) == 0) 225 break; 226 } 227 if (!opt) 228 return (0); 229 if (cp) 230 *qfnamep = cp; 231 else { 232 (void)snprintf(buf, sizeof(buf), "%s/%s.%s", fs->fs_file, 233 qfname, qfextension[type]); 234 *qfnamep = buf; 235 } 236 if (statfs(fs->fs_file, &sfb) != 0) { 237 warn("cannot statfs mount point %s", fs->fs_file); 238 return (0); 239 } 240 if (strcmp(fs->fs_file, sfb.f_mntonname)) { 241 warnx("%s not mounted for %s quotas", fs->fs_file, 242 type == USRQUOTA ? "user" : "group"); 243 return (0); 244 } 245 return (1); 246} 247 248/* 249 * Verify filesystem is mounted and not readonly. 250 */ 251int 252readonly(struct fstab *fs) 253{ 254 struct statfs fsbuf; 255 256 if (statfs(fs->fs_file, &fsbuf) < 0 || 257 strcmp(fsbuf.f_mntonname, fs->fs_file) || 258 strcmp(fsbuf.f_mntfromname, fs->fs_spec)) { 259 printf("%s: not mounted\n", fs->fs_file); 260 return (1); 261 } 262 if (fsbuf.f_flags & MNT_RDONLY) { 263 printf("%s: mounted read-only\n", fs->fs_file); 264 return (1); 265 } 266 return (0); 267} 268