source: branches/3.2/mindi-busybox/libbb/selinux_common.c @ 3232

Last change on this file since 3232 was 3232, checked in by bruno, 5 years ago
  • Update mindi-busybox to 1.21.1
  • Property svn:eol-style set to native
File size: 1.3 KB
Line 
1/*
2 * libbb/selinux_common.c
3 *   -- common SELinux utility functions
4 *
5 * Copyright 2007 KaiGai Kohei <kaigai@kaigai.gr.jp>
6 *
7 * Licensed under GPLv2, see file LICENSE in this source tree.
8 */
9#include "libbb.h"
10#include <selinux/context.h>
11
12context_t FAST_FUNC set_security_context_component(security_context_t cur_context,
13            char *user, char *role, char *type, char *range)
14{
15    context_t con = context_new(cur_context);
16    if (!con)
17        return NULL;
18
19    if (user && context_user_set(con, user))
20        goto error;
21    if (type && context_type_set(con, type))
22        goto error;
23    if (range && context_range_set(con, range))
24        goto error;
25    if (role && context_role_set(con, role))
26        goto error;
27    return con;
28
29error:
30    context_free(con);
31    return NULL;
32}
33
34void FAST_FUNC setfscreatecon_or_die(security_context_t scontext)
35{
36    if (setfscreatecon(scontext) < 0) {
37        /* Can be NULL. All known printf implementations
38         * display "(null)", "<null>" etc */
39        bb_perror_msg_and_die("can't set default "
40                "file creation context to %s", scontext);
41    }
42}
43
44void FAST_FUNC selinux_preserve_fcontext(int fdesc)
45{
46    security_context_t context;
47
48    if (fgetfilecon(fdesc, &context) < 0) {
49        if (errno == ENODATA || errno == ENOTSUP)
50            return;
51        bb_perror_msg_and_die("fgetfilecon failed");
52    }
53    setfscreatecon_or_die(context);
54    freecon(context);
55}
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