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e701e381 | 1 | /* |
e6b0e49b | 2 | * Copyright (C) 2012-2013 ProFUSION embedded systems |
e701e381 | 3 | * |
e1b1ab24 LDM |
4 | * This program 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. | |
e701e381 LDM |
8 | * |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
e1b1ab24 LDM |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. | |
e701e381 | 13 | * |
e1b1ab24 LDM |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library; if not, write to the Free Software | |
16 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
e701e381 LDM |
17 | */ |
18 | ||
68cc4493 LDM |
19 | #include <errno.h> |
20 | #include <dlfcn.h> | |
21 | #include <sys/utsname.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <stdio.h> | |
25 | ||
26 | #include "testsuite.h" | |
27 | ||
28 | TS_EXPORT int uname(struct utsname *u) | |
29 | { | |
30 | static void *nextlib = NULL; | |
31 | static int (*nextlib_uname)(struct utsname *u); | |
32 | const char *release = getenv(S_TC_UNAME_R); | |
33 | int err; | |
34 | size_t sz; | |
35 | ||
36 | if (release == NULL) { | |
37 | fprintf(stderr, "TRAP uname(): missing export %s?\n", | |
38 | S_TC_UNAME_R); | |
39 | errno = EFAULT; | |
40 | return -1; | |
41 | } | |
42 | ||
43 | if (nextlib == NULL) { | |
44 | #ifdef RTLD_NEXT | |
45 | nextlib = RTLD_NEXT; | |
46 | #else | |
47 | nextlib = dlopen("libc.so.6", RTLD_LAZY); | |
48 | #endif | |
49 | nextlib_uname = dlsym(nextlib, "uname"); | |
50 | } | |
51 | ||
52 | err = nextlib_uname(u); | |
53 | if (err < 0) | |
54 | return err; | |
55 | ||
56 | sz = strlen(release) + 1; | |
57 | if (sz > sizeof(u->release)) { | |
58 | fprintf(stderr, "uname(): sizeof release (%s) " | |
d3f159bb | 59 | "is greater than available space: %zu", |
68cc4493 LDM |
60 | release, sizeof(u->release)); |
61 | errno = -EFAULT; | |
62 | return -1; | |
63 | } | |
64 | ||
65 | memcpy(u->release, release, sz); | |
66 | return 0; | |
67 | } |