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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> | |
632fb7b4 | 25 | #include <unistd.h> |
68cc4493 LDM |
26 | |
27 | #include "testsuite.h" | |
28 | ||
29 | TS_EXPORT int uname(struct utsname *u) | |
30 | { | |
31 | static void *nextlib = NULL; | |
32 | static int (*nextlib_uname)(struct utsname *u); | |
632fb7b4 | 33 | const char *release; |
68cc4493 LDM |
34 | int err; |
35 | size_t sz; | |
36 | ||
68cc4493 LDM |
37 | if (nextlib == NULL) { |
38 | #ifdef RTLD_NEXT | |
39 | nextlib = RTLD_NEXT; | |
40 | #else | |
41 | nextlib = dlopen("libc.so.6", RTLD_LAZY); | |
42 | #endif | |
43 | nextlib_uname = dlsym(nextlib, "uname"); | |
44 | } | |
45 | ||
46 | err = nextlib_uname(u); | |
47 | if (err < 0) | |
48 | return err; | |
49 | ||
632fb7b4 MM |
50 | if (!environ) |
51 | /* | |
52 | * probably called from within glibc before main(); unsafe | |
53 | * to call getenv() | |
54 | */ | |
55 | return 0; | |
56 | ||
57 | release = getenv(S_TC_UNAME_R); | |
58 | if (release == NULL) { | |
59 | fprintf(stderr, "TRAP uname(): missing export %s?\n", | |
60 | S_TC_UNAME_R); | |
61 | return 0; | |
62 | } | |
63 | ||
68cc4493 LDM |
64 | sz = strlen(release) + 1; |
65 | if (sz > sizeof(u->release)) { | |
66 | fprintf(stderr, "uname(): sizeof release (%s) " | |
d3f159bb | 67 | "is greater than available space: %zu", |
68cc4493 LDM |
68 | release, sizeof(u->release)); |
69 | errno = -EFAULT; | |
70 | return -1; | |
71 | } | |
72 | ||
73 | memcpy(u->release, release, sz); | |
74 | return 0; | |
75 | } |