| 1 | #include <dlfcn.h> |
|---|---|
| 2 | #include <mcheck.h> |
| 3 | #include <stdio.h> |
| 4 | #include <stdlib.h> |
| 5 | |
| 6 | int |
| 7 | main (void) |
| 8 | { |
| 9 | void *h1; |
| 10 | void *h2; |
| 11 | int (*fp) (void); |
| 12 | |
| 13 | mtrace (); |
| 14 | |
| 15 | /* Open the two objects. */ |
| 16 | h1 = dlopen (file: "reldepmod5.so", RTLD_LAZY); |
| 17 | if (h1 == NULL) |
| 18 | { |
| 19 | printf (format: "cannot open reldepmod5.so: %s\n", dlerror ()); |
| 20 | exit (status: 1); |
| 21 | } |
| 22 | h2 = dlopen (file: "reldepmod6.so", RTLD_LAZY); |
| 23 | if (h2 == NULL) |
| 24 | { |
| 25 | printf (format: "cannot open reldepmod6.so: %s\n", dlerror ()); |
| 26 | exit (status: 1); |
| 27 | } |
| 28 | |
| 29 | /* Get the address of the variable in reldepmod1.so. */ |
| 30 | fp = dlsym (handle: h2, name: "bar"); |
| 31 | if (fp == NULL) |
| 32 | { |
| 33 | printf (format: "cannot get address of \"bar\": %s\n", dlerror ()); |
| 34 | exit (status: 1); |
| 35 | } |
| 36 | |
| 37 | /* Call the function. */ |
| 38 | puts (s: "calling fp for the first time"); |
| 39 | if (fp () != 0) |
| 40 | { |
| 41 | puts (s: "function \"call_me\" returned wrong result"); |
| 42 | exit (status: 1); |
| 43 | } |
| 44 | |
| 45 | /* Now close the first object. It must still be around since we have |
| 46 | an implicit dependency. */ |
| 47 | if (dlclose (handle: h1) != 0) |
| 48 | { |
| 49 | printf (format: "closing h1 failed: %s\n", dlerror ()); |
| 50 | exit (status: 1); |
| 51 | } |
| 52 | |
| 53 | /* Calling the function must still work. */ |
| 54 | puts (s: "calling fp for the second time"); |
| 55 | if (fp () != 0) |
| 56 | { |
| 57 | puts (s: "function \"call_me\" the second time returned wrong result"); |
| 58 | exit (status: 1); |
| 59 | } |
| 60 | puts (s: "second call succeeded as well"); |
| 61 | |
| 62 | /* Close the second object, we are done. */ |
| 63 | if (dlclose (handle: h2) != 0) |
| 64 | { |
| 65 | printf (format: "closing h2 failed: %s\n", dlerror ()); |
| 66 | exit (status: 1); |
| 67 | } |
| 68 | |
| 69 | return 0; |
| 70 | } |
| 71 |