search for: vddk_unload

...d the plugin. */ +static void +vddk_load (void) +{ + int err; + + err = pthread_key_create (&error_suppression, NULL); + if (err != 0) { + nbdkit_error ("vddk: pthread_key_create: %s\n", strerror (err)); + exit (EXIT_FAILURE); + } +} + +/* Unload the plugin. */ +static void +vddk_unload (void) +{ + if (init_called) { + DEBUG_CALL ("VixDiskLib_Exit", ""); + VixDiskLib_Exit (); + } + if (dl) + dlclose (dl); + free (config); + free (libdir); + free (password); + pthread_key_delete (error_suppression); +} + static void trim (char *str) { @@ -133,...

I couldn't get this to work in the end. This is the latest non-working version. This email documents what doesn't work for the permanent record. The central problem is that VDDK InitEx() appears to dlopen() various of its own plugins. Although I wasn't able to capture exactly what dlopen() command it is running, the plugins cannot be loaded because they rely on the recompiled

...); \ - } \ - } while (0) -#define OPTIONAL_STUB(fn,ret,args) fn = dlsym (dl, #fn) -#include "vddk-stubs.h" -#undef STUB -#undef OPTIONAL_STUB -} - +/* Unload the plugin. */ static void vddk_unload (void) { @@ -289,6 +242,54 @@ vddk_config (const char *key, const char *value) return 0; } +/* Load the VDDK library. */ +static void +load_library (void) +{ + static const char *sonames[] = { + /* Prefer the newest library in case multiple exist. */ + "libvixDiskLib.so.6",...

We had a query yesterday about the VDDK plugin and making it actually obey the weird "Multithreading Considerations" rules in the VDDK documentation (https://vdc-download.vmware.com/vmwb-repository/dcr-public/8f96698a-0e7b-4d67-bb6c-d18a1d101540/ef536a47-27cd-481a-90ef-76b38e75353c/vsphere-vddk-671-programming-guide.pdf) This patch is my attempt to implement this. The idea is that the

This is my second attempt at this. The first version (also not working) was here: https://www.redhat.com/archives/libguestfs/2019-October/msg00062.html In part 1/2 I introduce a new .ready_to_serve plugin method which is called after forking and just before accepting any client connection. The idea would be that plugins could start background threads here. However this doesn't work well in

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

...was InitEx called */ +static bool init_called = false; /* was InitEx called */ +static char *reexeced = false; /* did libdir require reexec */ static char *config = NULL; /* config */ static const char *cookie = NULL; /* cookie */ @@ -162,6 +164,8 @@ vddk_unload (void) static int vddk_config (const char *key, const char *value) { + int r; + if (strcmp (key, "config") == 0) { /* See FILENAMES AND PATHS in nbdkit-plugin(3). */ free (config); @@ -199,12 +203,15 @@ vddk_config (const char *key, const char *value) if (nbdkit_pars...

In v7: everything should work now! The re-exec code is slightly simplified, with Rich's suggestion to pass the original LD_LIBRARY_PATH rather than just the prefix being added, and I've now finished wiring up the initial dlopen() check into code that correctly computes the right prefix dir to add to LD_LIBRARY_PATH. Eric Blake (1): vddk: Add re-exec with altered environment Richard

...lopen handle */ +static void *shimdl = NULL; /* shim dlopen handle */ +static void *dl = NULL; /* vddk dlopen handle */ static int init_called = 0; /* was InitEx called */ static char *config = NULL; /* config */ @@ -153,6 +156,8 @@ vddk_unload (void) } if (dl) dlclose (dl); + if (shimdl) + dlclose (shimdl); free (config); free (libdir); free (password); @@ -248,17 +253,67 @@ load_library (void) { static const char *sonames[] = { /* Prefer the newest library in case multiple exist. */ + "lib64/libv...