1 /*- 2 * Copyright (c) 1999, 2001, 2002 Robert N M Watson 3 * All rights reserved. 4 * 5 * This software was developed by Robert Watson for the TrustedBSD Project. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 /* 29 * getfacl -- POSIX.1e utility to extract ACLs from files and directories 30 * and send the results to stdout 31 */ 32 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include <sys/types.h> 38 #include <sys/param.h> 39 #include <sys/acl.h> 40 #include <sys/stat.h> 41 42 #include <err.h> 43 #include <errno.h> 44 #include <grp.h> 45 #include <pwd.h> 46 #include <stdio.h> 47 #include <stdlib.h> 48 #include <string.h> 49 #include <unistd.h> 50 51 static int more_than_one = 0; 52 53 static void 54 usage(void) 55 { 56 57 fprintf(stderr, "getfacl [-dhnqv] [file ...]\n"); 58 } 59 60 static char * 61 getuname(uid_t uid) 62 { 63 struct passwd *pw; 64 static char uids[10]; 65 66 if ((pw = getpwuid(uid)) == NULL) { 67 (void)snprintf(uids, sizeof(uids), "%u", uid); 68 return (uids); 69 } else 70 return (pw->pw_name); 71 } 72 73 static char * 74 getgname(gid_t gid) 75 { 76 struct group *gr; 77 static char gids[10]; 78 79 if ((gr = getgrgid(gid)) == NULL) { 80 (void)snprintf(gids, sizeof(gids), "%u", gid); 81 return (gids); 82 } else 83 return (gr->gr_name); 84 } 85 86 static int 87 print_acl(char *path, acl_type_t type, int hflag, int iflag, int nflag, 88 int qflag, int vflag) 89 { 90 struct stat sb; 91 acl_t acl; 92 char *acl_text; 93 int error, flags = 0, ret; 94 95 if (hflag) 96 error = lstat(path, &sb); 97 else 98 error = stat(path, &sb); 99 if (error == -1) { 100 warn("%s: stat() failed", path); 101 return(-1); 102 } 103 104 if (hflag) 105 ret = lpathconf(path, _PC_ACL_NFS4); 106 else 107 ret = pathconf(path, _PC_ACL_NFS4); 108 if (ret > 0) { 109 if (type == ACL_TYPE_DEFAULT) { 110 warnx("%s: there are no default entries in NFSv4 ACLs", 111 path); 112 return (-1); 113 } 114 type = ACL_TYPE_NFS4; 115 } else if (ret < 0 && errno != EINVAL) { 116 warn("%s: pathconf(..., _PC_ACL_NFS4) failed", path); 117 return (-1); 118 } 119 120 if (more_than_one) 121 printf("\n"); 122 else 123 more_than_one++; 124 125 if (!qflag) 126 printf("# file: %s\n# owner: %s\n# group: %s\n", path, 127 getuname(sb.st_uid), getgname(sb.st_gid)); 128 129 if (hflag) 130 acl = acl_get_link_np(path, type); 131 else 132 acl = acl_get_file(path, type); 133 if (!acl) { 134 if (errno != EOPNOTSUPP) { 135 warn("%s", path); 136 return(-1); 137 } 138 errno = 0; 139 if (type == ACL_TYPE_DEFAULT) 140 return(0); 141 acl = acl_from_mode_np(sb.st_mode); 142 if (!acl) { 143 warn("%s: acl_from_mode() failed", path); 144 return(-1); 145 } 146 } 147 148 if (iflag) 149 flags |= ACL_TEXT_APPEND_ID; 150 151 if (nflag) 152 flags |= ACL_TEXT_NUMERIC_IDS; 153 154 if (vflag) 155 flags |= ACL_TEXT_VERBOSE; 156 157 acl_text = acl_to_text_np(acl, 0, flags); 158 if (!acl_text) { 159 warn("%s: acl_to_text_np() failed", path); 160 (void)acl_free(acl); 161 return(-1); 162 } 163 164 printf("%s", acl_text); 165 166 (void)acl_free(acl); 167 (void)acl_free(acl_text); 168 169 return(0); 170 } 171 172 static int 173 print_acl_from_stdin(acl_type_t type, int hflag, int iflag, int nflag, 174 int qflag, int vflag) 175 { 176 char *p, pathname[PATH_MAX]; 177 int carried_error = 0; 178 179 while (fgets(pathname, (int)sizeof(pathname), stdin)) { 180 if ((p = strchr(pathname, '\n')) != NULL) 181 *p = '\0'; 182 if (print_acl(pathname, type, hflag, iflag, nflag, 183 qflag, vflag) == -1) { 184 carried_error = -1; 185 } 186 } 187 188 return(carried_error); 189 } 190 191 int 192 main(int argc, char *argv[]) 193 { 194 acl_type_t type = ACL_TYPE_ACCESS; 195 int carried_error = 0; 196 int ch, error, i; 197 int hflag, iflag, qflag, nflag, vflag; 198 199 hflag = 0; 200 iflag = 0; 201 qflag = 0; 202 nflag = 0; 203 vflag = 0; 204 while ((ch = getopt(argc, argv, "dhinqv")) != -1) 205 switch(ch) { 206 case 'd': 207 type = ACL_TYPE_DEFAULT; 208 break; 209 case 'h': 210 hflag = 1; 211 break; 212 case 'i': 213 iflag = 1; 214 break; 215 case 'n': 216 nflag = 1; 217 break; 218 case 'q': 219 qflag = 1; 220 break; 221 case 'v': 222 vflag = 1; 223 break; 224 default: 225 usage(); 226 return(-1); 227 } 228 argc -= optind; 229 argv += optind; 230 231 if (argc == 0) { 232 error = print_acl_from_stdin(type, hflag, iflag, nflag, 233 qflag, vflag); 234 return(error ? 1 : 0); 235 } 236 237 for (i = 0; i < argc; i++) { 238 if (!strcmp(argv[i], "-")) { 239 error = print_acl_from_stdin(type, hflag, iflag, nflag, 240 qflag, vflag); 241 if (error == -1) 242 carried_error = -1; 243 } else { 244 error = print_acl(argv[i], type, hflag, iflag, nflag, 245 qflag, vflag); 246 if (error == -1) 247 carried_error = -1; 248 } 249 } 250 251 return(carried_error ? 1 : 0); 252 } 253