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author | Andrew Bartlett <abartlet@samba.org> | 2011-09-09 21:24:49 +1000 |
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committer | Andrew Bartlett <abartlet@samba.org> | 2011-10-06 07:18:07 +0200 |
commit | 7d33ec3dfe78723d62f4941684060baeb9c4bda6 (patch) | |
tree | 0ca105c694d41ebda5d6b7e9c50e0b57d4204858 /source3/lib/module.c | |
parent | 040055bb6a578516007ab6f56ebe2ee77b0f8605 (diff) | |
download | samba-7d33ec3dfe78723d62f4941684060baeb9c4bda6.tar.gz samba-7d33ec3dfe78723d62f4941684060baeb9c4bda6.tar.bz2 samba-7d33ec3dfe78723d62f4941684060baeb9c4bda6.zip |
lib/util: consolidate module loading into common code
This creates a samba-modules private libary that handles the details.
Andrew Bartlett
Diffstat (limited to 'source3/lib/module.c')
-rw-r--r-- | source3/lib/module.c | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/source3/lib/module.c b/source3/lib/module.c index 9cd3884c51..a85d7d0528 100644 --- a/source3/lib/module.c +++ b/source3/lib/module.c @@ -20,123 +20,3 @@ */ #include "includes.h" - -/* Load a dynamic module. Only log a level 0 error if we are not checking - for the existence of a module (probling). */ - -static NTSTATUS do_smb_load_module(const char *module_name, bool is_probe) -{ - void *handle; - init_module_function *init; - NTSTATUS status; - const char *error; - - /* Always try to use LAZY symbol resolving; if the plugin has - * backwards compatibility, there might be symbols in the - * plugin referencing to old (removed) functions - */ - handle = dlopen(module_name, RTLD_LAZY); - - /* This call should reset any possible non-fatal errors that - occured since last call to dl* functions */ - error = dlerror(); - - if(!handle) { - int level = is_probe ? 3 : 0; - DEBUG(level, ("Error loading module '%s': %s\n", module_name, error ? error : "")); - return NT_STATUS_UNSUCCESSFUL; - } - - init = (init_module_function *)dlsym(handle, "init_samba_module"); - - /* we must check dlerror() to determine if it worked, because - dlsym() can validly return NULL */ - error = dlerror(); - if (error) { - DEBUG(0, ("Error trying to resolve symbol 'init_samba_module' " - "in %s: %s\n", module_name, error)); - dlclose(handle); - return NT_STATUS_UNSUCCESSFUL; - } - - DEBUG(2, ("Module '%s' loaded\n", module_name)); - - status = init(); - if (!NT_STATUS_IS_OK(status)) { - DEBUG(0, ("Module '%s' initialization failed: %s\n", - module_name, get_friendly_nt_error_msg(status))); - dlclose(handle); - } - - return status; -} - -NTSTATUS smb_load_module(const char *module_name) -{ - return do_smb_load_module(module_name, False); -} - -/* Load all modules in list and return number of - * modules that has been successfully loaded */ -int smb_load_modules(const char **modules) -{ - int i; - int success = 0; - - for(i = 0; modules[i]; i++){ - if(NT_STATUS_IS_OK(smb_load_module(modules[i]))) { - success++; - } - } - - DEBUG(2, ("%d modules successfully loaded\n", success)); - - return success; -} - -NTSTATUS smb_probe_module(const char *subsystem, const char *module) -{ - char *full_path = NULL; - TALLOC_CTX *ctx = talloc_stackframe(); - NTSTATUS status; - - /* Check for absolute path */ - - /* if we make any 'samba multibyte string' - calls here, we break - for loading string modules */ - - DEBUG(5, ("Probing module '%s'\n", module)); - - if (module[0] == '/') { - status = do_smb_load_module(module, True); - TALLOC_FREE(ctx); - return status; - } - - full_path = talloc_asprintf(ctx, - "%s/%s.%s", - modules_path(ctx, subsystem), - module, - shlib_ext()); - if (!full_path) { - TALLOC_FREE(ctx); - return NT_STATUS_NO_MEMORY; - } - - DEBUG(5, ("Probing module '%s': Trying to load from %s\n", - module, full_path)); - - status = do_smb_load_module(full_path, True); - - TALLOC_FREE(ctx); - return status; -} - -void init_modules(void) -{ - /* FIXME: This can cause undefined symbol errors : - * smb_register_vfs() isn't available in nmbd, for example */ - if(lp_preload_modules()) - smb_load_modules(lp_preload_modules()); -} |