| 1 | #include <dlfcn.h> |
|---|---|
| 2 | #include <stdio.h> |
| 3 | #include <stdlib.h> |
| 4 | |
| 5 | #include <link.h> |
| 6 | |
| 7 | |
| 8 | static int |
| 9 | do_test (void) |
| 10 | { |
| 11 | static const char modname[] = "tst-tlsmod2.so"; |
| 12 | int result = 0; |
| 13 | int *foop; |
| 14 | int *foop2; |
| 15 | int (*fp) (int, int *); |
| 16 | void *h; |
| 17 | int i; |
| 18 | int modid = -1; |
| 19 | |
| 20 | for (i = 0; i < 10; ++i) |
| 21 | { |
| 22 | h = dlopen (file: modname, RTLD_LAZY); |
| 23 | if (h == NULL) |
| 24 | { |
| 25 | printf (format: "cannot open '%s': %s\n", modname, dlerror ()); |
| 26 | exit (status: 1); |
| 27 | } |
| 28 | |
| 29 | /* Dirty test code here: we peek into a private data structure. |
| 30 | We make sure that the module gets assigned the same ID every |
| 31 | time. The value of the first round is used. */ |
| 32 | if (modid == -1) |
| 33 | modid = ((struct link_map *) h)->l_tls_modid; |
| 34 | else if (((struct link_map *) h)->l_tls_modid != modid) |
| 35 | { |
| 36 | printf (format: "round %d: modid now %zd, initially %d\n", |
| 37 | i, ((struct link_map *) h)->l_tls_modid, modid); |
| 38 | result = 1; |
| 39 | } |
| 40 | |
| 41 | foop = dlsym (handle: h, name: "foo"); |
| 42 | if (foop == NULL) |
| 43 | { |
| 44 | printf (format: "cannot get symbol 'foo': %s\n", dlerror ()); |
| 45 | exit (status: 1); |
| 46 | } |
| 47 | |
| 48 | *foop = 42 + i; |
| 49 | |
| 50 | fp = dlsym (handle: h, name: "in_dso"); |
| 51 | if (fp == NULL) |
| 52 | { |
| 53 | printf (format: "cannot get symbol 'in_dso': %s\n", dlerror ()); |
| 54 | exit (status: 1); |
| 55 | } |
| 56 | |
| 57 | result |= fp (42 + i, foop); |
| 58 | |
| 59 | foop2 = dlsym (handle: h, name: "foo"); |
| 60 | if (foop2 == NULL) |
| 61 | { |
| 62 | printf (format: "cannot get symbol 'foo' the second time: %s\n", dlerror ()); |
| 63 | exit (status: 1); |
| 64 | } |
| 65 | |
| 66 | if (foop != foop2) |
| 67 | { |
| 68 | puts (s: "address of 'foo' different the second time"); |
| 69 | result = 1; |
| 70 | } |
| 71 | else if (*foop != 16) |
| 72 | { |
| 73 | puts (s: "foo != 16"); |
| 74 | result = 1; |
| 75 | } |
| 76 | |
| 77 | dlclose (handle: h); |
| 78 | } |
| 79 | |
| 80 | return result; |
| 81 | } |
| 82 | |
| 83 | |
| 84 | #include <support/test-driver.c> |
| 85 |