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68cc4493 LDM |
1 | #include <errno.h> |
2 | #include <dlfcn.h> | |
3 | #include <sys/utsname.h> | |
4 | #include <stdlib.h> | |
5 | #include <string.h> | |
6 | #include <stdio.h> | |
7 | ||
8 | #include "testsuite.h" | |
9 | ||
10 | TS_EXPORT int uname(struct utsname *u) | |
11 | { | |
12 | static void *nextlib = NULL; | |
13 | static int (*nextlib_uname)(struct utsname *u); | |
14 | const char *release = getenv(S_TC_UNAME_R); | |
15 | int err; | |
16 | size_t sz; | |
17 | ||
18 | if (release == NULL) { | |
19 | fprintf(stderr, "TRAP uname(): missing export %s?\n", | |
20 | S_TC_UNAME_R); | |
21 | errno = EFAULT; | |
22 | return -1; | |
23 | } | |
24 | ||
25 | if (nextlib == NULL) { | |
26 | #ifdef RTLD_NEXT | |
27 | nextlib = RTLD_NEXT; | |
28 | #else | |
29 | nextlib = dlopen("libc.so.6", RTLD_LAZY); | |
30 | #endif | |
31 | nextlib_uname = dlsym(nextlib, "uname"); | |
32 | } | |
33 | ||
34 | err = nextlib_uname(u); | |
35 | if (err < 0) | |
36 | return err; | |
37 | ||
38 | sz = strlen(release) + 1; | |
39 | if (sz > sizeof(u->release)) { | |
40 | fprintf(stderr, "uname(): sizeof release (%s) " | |
41 | "is greater than available space: %lu", | |
42 | release, sizeof(u->release)); | |
43 | errno = -EFAULT; | |
44 | return -1; | |
45 | } | |
46 | ||
47 | memcpy(u->release, release, sz); | |
48 | return 0; | |
49 | } |