switch_dso.h File Reference

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Typedefs
typedef void *	switch_dso_lib_t
typedef void *	switch_dso_data_t

Functions
void	switch_dso_destroy (switch_dso_lib_t *lib)
switch_dso_lib_t	switch_dso_open (const char *path, int global, char **err)
switch_dso_func_t	switch_dso_func_sym (switch_dso_lib_t lib, const char *sym, char **err)
void *	switch_dso_data_sym (switch_dso_lib_t lib, const char *sym, char **err)

Variables
SWITCH_BEGIN_EXTERN_C typedef int(*	switch_dso_func_t )(void)

Typedef Documentation

typedef void* switch_dso_data_t

Definition at line 33 of file switch_dso.h.

typedef void* switch_dso_lib_t

Definition at line 30 of file switch_dso.h.

Function Documentation

void* switch_dso_data_sym	(	switch_dso_lib_t	lib,
		const char *	sym,
		char **	err
	)

Definition at line 126 of file switch_dso.c.

Referenced by switch_loadable_module_load_file().

{
        void *addr = dlsym(lib, sym);
        if (!addr) {
                char *err_str = NULL;
                dlerror();

                if (!(addr = dlsym(lib, sym))) {
                        err_str = (char *)dlerror();
                }

                if (err_str) {
                        *err = strdup(err_str);
                }
        }
        return addr;
}

void switch_dso_destroy

(

switch_dso_lib_t *

lib

)

Definition at line 87 of file switch_dso.c.

Referenced by do_shutdown(), and switch_loadable_module_load_file().

{
        if (lib && *lib) {
                dlclose(*lib);
                *lib = NULL;
        }
}

switch_dso_func_t switch_dso_func_sym	(	switch_dso_lib_t	lib,
		const char *	sym,
		char **	err
	)

Definition at line 117 of file switch_dso.c.

References switch_dso_func_t.

{
        void *func = dlsym(lib, sym);
        if (!func) {
                *err = strdup(dlerror());
        }
        return (switch_dso_func_t) (intptr_t) func;
}

switch_dso_lib_t switch_dso_open	(	const char *	path,
		int	global,
		char **	err
	)

Definition at line 95 of file switch_dso.c.

Referenced by switch_loadable_module_load_file().

{
        void *lib;

        if (global) {
                lib = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
        } else {
                lib = dlopen(path, RTLD_NOW | RTLD_LOCAL);
        }

        if (lib == NULL) {
                const char *dlerr = dlerror();
                /* Work around broken uclibc returning NULL on both dlopen() and dlerror() */
                if (dlerr) {
                        *err = strdup(dlerr);
                } else {
                        *err = strdup("Unknown error");
                }
        }
        return lib;
}

Variable Documentation

SWITCH_BEGIN_EXTERN_C typedef int(* switch_dso_func_t)(void)

Definition at line 26 of file switch_dso.h.

Referenced by switch_dso_func_sym().