win32dlopen.c File Reference

#include "c.h"

Include dependency graph for win32dlopen.c:

Go to the source code of this file.

Functions
static void	set_dl_error (void)
char *	dlerror (void)
int	dlclose (void *handle)
void *	dlsym (void *handle, const char *symbol)
void *	dlopen (const char *file, int mode)

Variables
static char	last_dyn_error [512]

Function Documentation

dlclose()

int dlclose

(

void *

handle

)

Definition at line 49 of file win32dlopen.c.

{
    if (!FreeLibrary((HMODULE) handle))
    {
        set_dl_error();
        return 1;
    }
    last_dyn_error[0] = 0;
    return 0;
}

References last_dyn_error, and set_dl_error().

Referenced by internal_load_library().

dlerror()

char * dlerror

(

void

)

Definition at line 40 of file win32dlopen.c.

{
    if (last_dyn_error[0])
        return last_dyn_error;
    else
        return NULL;
}

References last_dyn_error.

Referenced by internal_load_library().

dlopen()

void * dlopen	(	const char *	file,
		int	mode
	)

Definition at line 76 of file win32dlopen.c.

{
    HMODULE     h;
    int         prevmode;
 
    /* Disable popup error messages when loading DLLs */
    prevmode = SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOOPENFILEERRORBOX);
    h = LoadLibrary(file);
    SetErrorMode(prevmode);
 
    if (!h)
    {
        set_dl_error();
        return NULL;
    }
    last_dyn_error[0] = 0;
    return (void *) h;
}

References last_dyn_error, and set_dl_error().

Referenced by internal_load_library().

dlsym()

void * dlsym	(	void *	handle,
		const char *	symbol
	)

Definition at line 61 of file win32dlopen.c.

{
    void       *ptr;
 
    ptr = GetProcAddress((HMODULE) handle, symbol);
    if (!ptr)
    {
        set_dl_error();
        return NULL;
    }
    last_dyn_error[0] = 0;
    return ptr;
}

References last_dyn_error, and set_dl_error().

Referenced by internal_load_library(), load_external_function(), and lookup_external_function().

set_dl_error()

static void set_dl_error ( void  )

static

Definition at line 21 of file win32dlopen.c.

{
    DWORD       err = GetLastError();
 
    if (FormatMessage(FORMAT_MESSAGE_IGNORE_INSERTS |
                      FORMAT_MESSAGE_FROM_SYSTEM,
                      NULL,
                      err,
                      MAKELANGID(LANG_ENGLISH, SUBLANG_DEFAULT),
                      last_dyn_error,
                      sizeof(last_dyn_error) - 1,
                      NULL) == 0)
    {
        snprintf(last_dyn_error, sizeof(last_dyn_error) - 1,
                 "unknown error %lu", err);
    }
}

References err(), last_dyn_error, and snprintf.

Referenced by dlclose(), dlopen(), and dlsym().

Variable Documentation

last_dyn_error

char last_dyn_error[512]

static

Definition at line 18 of file win32dlopen.c.

Referenced by dlclose(), dlerror(), dlopen(), dlsym(), and set_dl_error().