1 | /* Copyright (C) 2006-2022 Free Software Foundation, Inc. |
2 | This file is part of the GNU C Library. |
3 | |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either |
7 | version 2.1 of the License, or (at your option) any later version. |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | Lesser General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, see |
16 | <https://www.gnu.org/licenses/>. */ |
17 | |
18 | #include <limits.h> |
19 | #include <stdio.h> |
20 | #include <string.h> |
21 | #include <rpc/rpc.h> |
22 | #include <sys/mman.h> |
23 | #include <unistd.h> |
24 | #include <stdint.h> |
25 | |
26 | static int |
27 | do_test (void) |
28 | { |
29 | XDR xdrs; |
30 | void *buf; |
31 | size_t ps = sysconf (_SC_PAGESIZE); |
32 | uintptr_t half = -1; |
33 | int v_int; |
34 | u_short v_u_short; |
35 | |
36 | half = (half >> 1) & ~(uintptr_t) (ps - 1); |
37 | buf = mmap (addr: (void *) half, len: 2 * ps, PROT_READ | PROT_WRITE, |
38 | MAP_PRIVATE | MAP_ANON, fd: -1, offset: 0); |
39 | if (buf == MAP_FAILED || buf != (void *) half) |
40 | { |
41 | puts (s: "Couldn't mmap 2 pages in the middle of address space" ); |
42 | return 0; |
43 | } |
44 | |
45 | xdrmem_create (&xdrs, (char *) buf, 2 * ps, XDR_ENCODE); |
46 | |
47 | #define T(type, val) \ |
48 | v_##type = val; \ |
49 | if (! xdr_##type (&xdrs, &v_##type)) \ |
50 | { \ |
51 | puts ("encoding of " #type \ |
52 | " " #val " failed"); \ |
53 | return 1; \ |
54 | } |
55 | |
56 | T(int, 127) |
57 | |
58 | u_int pos = xdr_getpos (&xdrs); |
59 | |
60 | T(u_short, 31) |
61 | |
62 | if (! xdr_setpos (&xdrs, pos)) |
63 | { |
64 | puts (s: "xdr_setpos during encoding failed" ); |
65 | return 1; |
66 | } |
67 | |
68 | T(u_short, 36) |
69 | |
70 | #undef T |
71 | |
72 | xdr_destroy (&xdrs); |
73 | |
74 | xdrmem_create (&xdrs, (char *) buf, 2 * ps, XDR_DECODE); |
75 | |
76 | #define T(type, val) \ |
77 | v_##type = 0x15; \ |
78 | if (! xdr_##type (&xdrs, &v_##type)) \ |
79 | { \ |
80 | puts ("decoding of " #type \ |
81 | " " #val " failed"); \ |
82 | return 1; \ |
83 | } \ |
84 | if (v_##type != val) \ |
85 | { \ |
86 | puts ("decoded value differs, " \ |
87 | "type " #type " " #val); \ |
88 | return 1; \ |
89 | } |
90 | |
91 | T(int, 127) |
92 | |
93 | pos = xdr_getpos (&xdrs); |
94 | |
95 | T(u_short, 36) |
96 | |
97 | if (! xdr_setpos (&xdrs, pos)) |
98 | { |
99 | puts (s: "xdr_setpos during encoding failed" ); |
100 | return 1; |
101 | } |
102 | |
103 | T(u_short, 36) |
104 | |
105 | #undef T |
106 | |
107 | xdr_destroy (&xdrs); |
108 | |
109 | return 0; |
110 | } |
111 | |
112 | #define TEST_FUNCTION do_test () |
113 | #include "../test-skeleton.c" |
114 | |