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 return(-1); 161 } 162 163 printf("%s", acl_text); 164 165 (void)acl_free(acl); 166 (void)acl_free(acl_text); 167 168 return(0); 169 } 170 171 static int 172 print_acl_from_stdin(acl_type_t type, int hflag, int iflag, int nflag, 173 int qflag, int vflag) 174 { 175 char *p, pathname[PATH_MAX]; 176 int carried_error = 0; 177 178 while (fgets(pathname, (int)sizeof(pathname), stdin)) { 179 if ((p = strchr(pathname, '\n')) != NULL) 180 *p = '\0'; 181 if (print_acl(pathname, type, hflag, iflag, nflag, 182 qflag, vflag) == -1) { 183 carried_error = -1; 184 } 185 } 186 187 return(carried_error); 188 } 189 190 int 191 main(int argc, char *argv[]) 192 { 193 acl_type_t type = ACL_TYPE_ACCESS; 194 int carried_error = 0; 195 int ch, error, i; 196 int hflag, iflag, qflag, nflag, vflag; 197 198 hflag = 0; 199 iflag = 0; 200 qflag = 0; 201 nflag = 0; 202 vflag = 0; 203 while ((ch = getopt(argc, argv, "dhinqv")) != -1) 204 switch(ch) { 205 case 'd': 206 type = ACL_TYPE_DEFAULT; 207 break; 208 case 'h': 209 hflag = 1; 210 break; 211 case 'i': 212 iflag = 1; 213 break; 214 case 'n': 215 nflag = 1; 216 break; 217 case 'q': 218 qflag = 1; 219 break; 220 case 'v': 221 vflag = 1; 222 break; 223 default: 224 usage(); 225 return(-1); 226 } 227 argc -= optind; 228 argv += optind; 229 230 if (argc == 0) { 231 error = print_acl_from_stdin(type, hflag, iflag, nflag, 232 qflag, vflag); 233 return(error ? 1 : 0); 234 } 235 236 for (i = 0; i < argc; i++) { 237 if (!strcmp(argv[i], "-")) { 238 error = print_acl_from_stdin(type, hflag, iflag, nflag, 239 qflag, vflag); 240 if (error == -1) 241 carried_error = -1; 242 } else { 243 error = print_acl(argv[i], type, hflag, iflag, nflag, 244 qflag, vflag); 245 if (error == -1) 246 carried_error = -1; 247 } 248 } 249 250 return(carried_error ? 1 : 0); 251 } 252