1 /*- 2 * Copyright (c) 2001 Chris D. Faulhaber 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/types.h> 28 #include <sys/acl.h> 29 30 #include <err.h> 31 #include <stdio.h> 32 #include <string.h> 33 34 #include "setfacl.h" 35 36 /* 37 * read acl text from a file and return the corresponding acl 38 */ 39 acl_t 40 get_acl_from_file(const char *filename) 41 { 42 FILE *file; 43 size_t len; 44 char buf[BUFSIZ+1]; 45 46 if (filename == NULL) 47 err(1, "(null) filename in get_acl_from_file()"); 48 49 if (strcmp(filename, "-") == 0) { 50 if (have_stdin) 51 err(1, "cannot specify more than one stdin"); 52 file = stdin; 53 have_stdin = true; 54 } else { 55 file = fopen(filename, "r"); 56 if (file == NULL) 57 err(1, "fopen() %s failed", filename); 58 } 59 60 len = fread(buf, (size_t)1, sizeof(buf) - 1, file); 61 buf[len] = '\0'; 62 if (ferror(file) != 0) { 63 fclose(file); 64 err(1, "error reading from %s", filename); 65 } else if (feof(file) == 0) { 66 fclose(file); 67 errx(1, "line too long in %s", filename); 68 } 69 70 fclose(file); 71 72 return (acl_from_text(buf)); 73 } 74