1 /*
2 * Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
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 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "defs.h"
29 #include <linux/personality.h>
30 #include "xlat/personality_types.h"
31 #include "xlat/personality_flags.h"
32
33
SYS_FUNC(personality)34 SYS_FUNC(personality)
35 {
36 unsigned int pers;
37
38 if (entering(tcp)) {
39 pers = tcp->u_arg[0];
40 if (0xffffffff == pers) {
41 tprints("0xffffffff");
42 } else {
43 printxval(personality_types, pers & PER_MASK, "PER_???");
44 pers &= ~PER_MASK;
45 if (pers) {
46 tprints("|");
47 printflags(personality_flags, pers, NULL);
48 }
49 }
50 return 0;
51 }
52
53 if (syserror(tcp))
54 return 0;
55
56 pers = tcp->u_rval;
57 const char *type = xlookup(personality_types, pers & PER_MASK);
58 char *p;
59 static char outstr[1024];
60 if (type)
61 p = stpcpy(outstr, type);
62 else
63 p = outstr + sprintf(outstr, "%#x /* %s */", pers & PER_MASK, "PER_???");
64 pers &= ~PER_MASK;
65 if (pers)
66 strcpy(p, sprintflags("|", personality_flags, pers));
67 tcp->auxstr = outstr;
68 return RVAL_HEX | RVAL_STR;
69 }
70