quotaon.c revision 1.13
1 /* $NetBSD: quotaon.c,v 1.13 1998/07/27 00:52:03 mycroft 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 1.13 1998/07/27 00:52:03 mycroft 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 <string.h> 65 #include <unistd.h> 66 67 char *qfname = QUOTAFILENAME; 68 char *qfextension[] = INITQFNAMES; 69 70 int aflag; /* all file systems */ 71 int gflag; /* operate on group quotas */ 72 int uflag; /* operate on user quotas */ 73 int vflag; /* verbose */ 74 75 extern char *__progname; 76 77 int main __P((int, char *[])); 78 79 static void usage __P((void)); 80 static int quotaonoff __P((struct fstab *, int, int, char *)); 81 static int oneof __P((const char *, char *[], int)); 82 static int hasquota __P((struct fstab *, int, char **)); 83 static int readonly __P((struct fstab *)); 84 85 int 86 main(argc, argv) 87 int argc; 88 char *argv[]; 89 { 90 struct fstab *fs; 91 char *qfnp; 92 long argnum, done = 0; 93 int i, offmode = 0, errs = 0; 94 int ch; 95 96 if (strcmp(__progname, "quotaoff") == 0) 97 offmode++; 98 else if (strcmp(__progname, "quotaon") != 0) 99 errx(1, "Name must be quotaon or quotaoff\n"); 100 101 while ((ch = getopt(argc, argv, "avug")) != -1) { 102 switch(ch) { 103 case 'a': 104 aflag++; 105 break; 106 case 'g': 107 gflag++; 108 break; 109 case 'u': 110 uflag++; 111 break; 112 case 'v': 113 vflag++; 114 break; 115 default: 116 usage(); 117 break; 118 } 119 } 120 argc -= optind; 121 argv += optind; 122 123 if (argc <= 0 && !aflag) 124 usage(); 125 126 if (!gflag && !uflag) { 127 gflag++; 128 uflag++; 129 } 130 setfsent(); 131 while ((fs = getfsent()) != NULL) { 132 if (strcmp(fs->fs_vfstype, "ffs") || 133 strcmp(fs->fs_type, FSTAB_RW)) 134 continue; 135 if (aflag) { 136 if (gflag && hasquota(fs, GRPQUOTA, &qfnp)) 137 errs += quotaonoff(fs, offmode, GRPQUOTA, qfnp); 138 if (uflag && hasquota(fs, USRQUOTA, &qfnp)) 139 errs += quotaonoff(fs, offmode, USRQUOTA, qfnp); 140 continue; 141 } 142 if ((argnum = oneof(fs->fs_file, argv, argc)) >= 0 || 143 (argnum = oneof(fs->fs_spec, argv, argc)) >= 0) { 144 done |= 1 << argnum; 145 if (gflag && hasquota(fs, GRPQUOTA, &qfnp)) 146 errs += quotaonoff(fs, offmode, GRPQUOTA, qfnp); 147 if (uflag && hasquota(fs, USRQUOTA, &qfnp)) 148 errs += quotaonoff(fs, offmode, USRQUOTA, qfnp); 149 } 150 } 151 endfsent(); 152 for (i = 0; i < argc; i++) 153 if ((done & (1 << i)) == 0) 154 warnx("%s not found in fstab", argv[i]); 155 exit(errs); 156 } 157 158 static void 159 usage() 160 { 161 162 (void) fprintf(stderr, "Usage:\n\t%s [-g] [-u] [-v] -a\n", __progname); 163 (void) fprintf(stderr, "\t%s [-g] [-u] [-v] filesys ...\n", __progname); 164 exit(1); 165 } 166 167 static int 168 quotaonoff(fs, offmode, type, qfpathname) 169 struct fstab *fs; 170 int offmode, type; 171 char *qfpathname; 172 { 173 174 if (strcmp(fs->fs_file, "/") && readonly(fs)) 175 return (1); 176 if (offmode) { 177 if (quotactl(fs->fs_file, QCMD(Q_QUOTAOFF, type), 0, 0) < 0) { 178 warn(fs->fs_file); 179 return (1); 180 } 181 if (vflag) 182 printf("%s: %s quotas turned off\n", 183 fs->fs_file, qfextension[type]); 184 return (0); 185 } 186 if (quotactl(fs->fs_file, QCMD(Q_QUOTAON, type), 0, qfpathname) < 0) { 187 warn("%s quotas using %s on %s", 188 qfextension[type], qfpathname, fs->fs_file); 189 return (1); 190 } 191 if (vflag) 192 printf("%s: %s quotas turned on\n", fs->fs_file, 193 qfextension[type]); 194 return (0); 195 } 196 197 /* 198 * Check to see if target appears in list of size cnt. 199 */ 200 static int 201 oneof(target, list, cnt) 202 const char *target; 203 char *list[]; 204 int cnt; 205 { 206 int i; 207 208 for (i = 0; i < cnt; i++) 209 if (strcmp(target, list[i]) == 0) 210 return (i); 211 return (-1); 212 } 213 214 /* 215 * Check to see if a particular quota is to be enabled. 216 */ 217 static int 218 hasquota(fs, type, qfnamep) 219 struct fstab *fs; 220 int type; 221 char **qfnamep; 222 { 223 char *opt; 224 char *cp = NULL; 225 static char initname, usrname[100], grpname[100]; 226 static char buf[BUFSIZ]; 227 228 if (!initname) { 229 (void) snprintf(usrname, sizeof(usrname), "%s%s", 230 qfextension[USRQUOTA], qfname); 231 (void) snprintf(grpname, sizeof(grpname), "%s%s", 232 qfextension[GRPQUOTA], qfname); 233 initname = 1; 234 } 235 strcpy(buf, fs->fs_mntops); 236 for (opt = strtok(buf, ","); opt; opt = strtok(NULL, ",")) { 237 if ((cp = strchr(opt, '=')) != NULL) 238 *cp++ = '\0'; 239 if (type == USRQUOTA && strcmp(opt, usrname) == 0) 240 break; 241 if (type == GRPQUOTA && strcmp(opt, grpname) == 0) 242 break; 243 } 244 if (!opt) 245 return (0); 246 if (cp) { 247 *qfnamep = cp; 248 return (1); 249 } 250 (void) snprintf(buf, sizeof(buf), "%s/%s.%s", fs->fs_file, qfname, 251 qfextension[type]); 252 *qfnamep = buf; 253 return (1); 254 } 255 256 /* 257 * Verify file system is mounted and not readonly. 258 */ 259 static int 260 readonly(fs) 261 struct fstab *fs; 262 { 263 struct statfs fsbuf; 264 265 if (statfs(fs->fs_file, &fsbuf) < 0 || 266 strcmp(fsbuf.f_mntonname, fs->fs_file) || 267 strcmp(fsbuf.f_mntfromname, fs->fs_spec)) { 268 printf("%s: not mounted\n", fs->fs_file); 269 return (1); 270 } 271 if (fsbuf.f_flags & MNT_RDONLY) { 272 printf("%s: mounted read-only\n", fs->fs_file); 273 return (1); 274 } 275 return (0); 276 } 277
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