1 /*- 2 * Copyright (c) 2002 Networks Associates Technology, Inc. 3 * Copyright (c) 2002 Poul-Henning Kamp. 4 * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson 5 * All rights reserved. 6 * 7 * This software was developed for the FreeBSD Project by Poul-Henning 8 * Kamp and Network Associates Laboratories, the Security Research Division 9 * of Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 10 * ("CBOSS"), as part of the DARPA CHATS research program 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. The names of the authors may not be used to endorse or promote 21 * products derived from this software without specific prior written 22 * permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * $FreeBSD$ 37 */ 38 39 #include <sys/types.h> 40 #include <sys/uio.h> 41 #include <sys/extattr.h> 42 43 #include <libgen.h> 44 #include <libutil.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <unistd.h> 49 #include <vis.h> 50 #include <err.h> 51 #include <errno.h> 52 53 static enum { EADUNNO, EAGET, EASET, EARM, EALS } what = EADUNNO; 54 55 static void __dead2 56 usage(void) 57 { 58 59 switch (what) { 60 case EAGET: 61 fprintf(stderr, "usage: getextattr [-fqsx] attrnamespace"); 62 fprintf(stderr, " attrname filename ...\n"); 63 exit(-1); 64 case EASET: 65 fprintf(stderr, "usage: setextattr [-fq] attrnamespace"); 66 fprintf(stderr, " attrname attrvalue filename ...\n"); 67 exit(-1); 68 case EARM: 69 fprintf(stderr, "usage: rmextattr [-fq] attrnamespace"); 70 fprintf(stderr, " attrname filename ...\n"); 71 exit(-1); 72 case EALS: 73 fprintf(stderr, "usage: lsextattr [-fq] attrnamespace"); 74 fprintf(stderr, " filename ...\n"); 75 exit(-1); 76 case EADUNNO: 77 default: 78 fprintf(stderr, "usage: (getextattr|lsextattr|rmextattr"); 79 fprintf(stderr, "|setextattr)\n"); 80 exit (-1); 81 } 82 } 83 84 static void 85 mkbuf(char **buf, int *oldlen, int newlen) 86 { 87 88 if (*oldlen >= newlen) 89 return; 90 if (*buf != NULL) 91 free(*buf); 92 *buf = malloc(newlen); 93 if (*buf == NULL) 94 err(1, "malloc"); 95 *oldlen = newlen; 96 return; 97 } 98 99 int 100 main(int argc, char *argv[]) 101 { 102 char *buf, *visbuf, *p; 103 104 const char *options, *attrname; 105 int buflen, visbuflen, ch, error, i, arg_counter, attrnamespace; 106 107 int flag_force = 0; 108 int flag_quiet = 0; 109 int flag_string = 0; 110 int flag_hex = 0; 111 112 visbuflen = buflen = 0; 113 visbuf = buf = NULL; 114 115 p = basename(argv[0]); 116 if (p == NULL) 117 p = argv[0]; 118 if (!strcmp(p, "getextattr")) { 119 what = EAGET; 120 options = "fqsx"; 121 } else if (!strcmp(p, "setextattr")) { 122 what = EASET; 123 options = "fq"; 124 } else if (!strcmp(p, "rmextattr")) { 125 what = EARM; 126 options = "fq"; 127 } else if (!strcmp(p, "lsextattr")) { 128 what = EALS; 129 options = "fq"; 130 } else { 131 usage(); 132 } 133 134 while ((ch = getopt(argc, argv, options)) != -1) { 135 switch (ch) { 136 case 'f': 137 flag_force = 1; 138 break; 139 case 'q': 140 flag_quiet = 1; 141 break; 142 case 's': 143 flag_string = 1; 144 break; 145 case 'x': 146 flag_hex = 1; 147 break; 148 case '?': 149 default: 150 usage(); 151 } 152 } 153 154 argc -= optind; 155 argv += optind; 156 157 if (argc < 2) 158 usage(); 159 160 error = extattr_string_to_namespace(argv[0], &attrnamespace); 161 if (error) 162 err(-1, argv[0]); 163 argc--; argv++; 164 165 if (what == EALS) { 166 attrname = ""; 167 } else { 168 attrname = argv[0]; 169 argc--; argv++; 170 } 171 172 if (what == EASET) { 173 mkbuf(&buf, &buflen, strlen(argv[0]) + 1); 174 strcpy(buf, argv[0]); 175 argc--; argv++; 176 } 177 178 for (arg_counter = 0; arg_counter < argc; arg_counter++) { 179 switch (what) { 180 case EARM: 181 error = extattr_delete_file(argv[arg_counter], 182 attrnamespace, attrname); 183 if (error >= 0) 184 continue; 185 break; 186 case EASET: 187 error = extattr_set_file(argv[arg_counter], 188 attrnamespace, attrname, buf, strlen(buf)); 189 if (error >= 0) 190 continue; 191 break; 192 case EALS: 193 case EAGET: 194 error = extattr_get_file(argv[arg_counter], 195 attrnamespace, attrname, NULL, 0); 196 if (error < 0) 197 break; 198 mkbuf(&buf, &buflen, error); 199 error = extattr_get_file(argv[arg_counter], 200 attrnamespace, attrname, buf, buflen); 201 if (error < 0) 202 break; 203 if (!flag_quiet) 204 printf("%s\t", argv[arg_counter]); 205 if (what == EALS) { 206 for (i = 0; i < error; i += buf[i] + 1) 207 printf("%s%*.*s", i ? "\t" : "", 208 buf[i], buf[i], buf + i + 1); 209 printf("\n"); 210 continue; 211 } 212 if (flag_string) { 213 mkbuf(&visbuf, &visbuflen, error * 4 + 1); 214 strvisx(visbuf, buf, error, 215 VIS_SAFE | VIS_WHITE); 216 printf("\"%s\"\n", visbuf); 217 continue; 218 } else if (flag_hex) { 219 for (i = 0; i < error; i++) 220 printf("%s%02x", i ? " " : "", 221 buf[i]); 222 printf("\n"); 223 continue; 224 } else { 225 fwrite(buf, buflen, 1, stdout); 226 printf("\n"); 227 continue; 228 } 229 default: 230 break; 231 } 232 if (!flag_quiet) 233 warn("%s: failed", argv[arg_counter]); 234 if (flag_force) 235 continue; 236 return(1); 237 } 238 return (0); 239 } 240