search for: no_one_has_a_library_by_this_nam

...dkit_set_dlopen_prefix (libdir) == -1) + return -1; + } + + /* The main goal of this plugin is to show that we can hook dlopen. + * Test this by requesting a library that doesn't exist, where the + * difference in the error message shows if we were successful. + */ + dlopen ("no_one_has_a_library_by_this_name", RTLD_NOW); + msg = dlerror (); + assert (msg); + nbdkit_error ("dlopen failed as expected: %s\n", msg); + + return 0; +} + +/* These must be provided, but we don't really need to use them. */ +static void * +dlopen_open (int readonly) +{ + return NBDKIT_HANDLE_NOT_NEEDED;...

Differences from v4: Patch 1 is simplified: I realized that since we already use -rdynamic for nbdkit (after all, we WANT our dlopen()d plugins to be able to call our nbdkit_* exports), it is only a matter of adding dlopen to the set of symbols that we export. With that done, there is no separate shared library needed; our dlopen shim is now part of nbdkit proper, and we don't have to tweak

I'm a lot happier with this version: no mucking with dlmopen(). It does add a bit more coupling between nbdkit proper and the vddk plugin (namely, nbdkit now exports a new function that the vddk plugin relies on), but patch 2 adds testsuite coverage of the new function so we shouldn't regress. Patch 1 and 2 are new, patch 3 is unchanged from when Rich posted it in v2, and patch 4 is