1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2001 Chris D. Faulhaber 5 * All rights reserved. 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 #include <sys/types.h> 30 #include <sys/acl.h> 31 32 #include <err.h> 33 #include <stdio.h> 34 #include <string.h> 35 36 #include "setfacl.h" 37 38 /* 39 * read acl text from a file and return the corresponding acl 40 */ 41 acl_t 42 get_acl_from_file(const char *filename) 43 { 44 FILE *file; 45 size_t len; 46 char buf[BUFSIZ+1]; 47 48 if (filename == NULL) 49 err(1, "(null) filename in get_acl_from_file()"); 50 51 if (strcmp(filename, "-") == 0) { 52 if (have_stdin) 53 err(1, "cannot specify more than one stdin"); 54 file = stdin; 55 have_stdin = true; 56 } else { 57 file = fopen(filename, "r"); 58 if (file == NULL) 59 err(1, "fopen() %s failed", filename); 60 } 61 62 len = fread(buf, (size_t)1, sizeof(buf) - 1, file); 63 buf[len] = '\0'; 64 if (ferror(file) != 0) { 65 fclose(file); 66 err(1, "error reading from %s", filename); 67 } else if (feof(file) == 0) { 68 fclose(file); 69 errx(1, "line too long in %s", filename); 70 } 71 72 fclose(file); 73 74 return (acl_from_text(buf)); 75 } 76