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