diff options
Diffstat (limited to 'xorg-server/hw/xfree86/loader/dlloader.c')
| -rw-r--r-- | xorg-server/hw/xfree86/loader/dlloader.c | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/xorg-server/hw/xfree86/loader/dlloader.c b/xorg-server/hw/xfree86/loader/dlloader.c deleted file mode 100644 index 18dcb76c6..000000000 --- a/xorg-server/hw/xfree86/loader/dlloader.c +++ /dev/null @@ -1,178 +0,0 @@ -/* - * Copyright (c) 1997 The XFree86 Project, Inc. - * - * Permission to use, copy, modify, distribute, and sell this software - * and its documentation for any purpose is hereby granted without - * fee, provided that the above copyright notice appear in all copies - * and that both that copyright notice and this permission notice - * appear in supporting documentation, and that the name of the - * XFree86 Project, Inc. not be used in advertising or publicity - * pertaining to distribution of the software without specific, - * written prior permission. The Xfree86 Project, Inc. makes no - * representations about the suitability of this software for any - * purpose. It is provided "as is" without express or implied - * warranty. - * - * THE XFREE86 PROJECT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO - * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS, IN NO EVENT SHALL THE XFREE86 PROJECT, INC. BE LIABLE - * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN - * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING - * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS - * SOFTWARE. - */ - -/* - * Once upon a time, X had multiple loader backends, three of which were - * essentially libdl reimplementations. This was nonsense so we chucked - * it, but we still retain the factorization between loader API and - * platform implementation. This file is the libdl implementation, and - * currently the only backend. If you find yourself porting to a platform - * without working libdl - hpux, win32, some forsaken a.out host, etc. - - * make a new backend rather than hacking up this file. - */ - -#ifdef HAVE_XORG_CONFIG_H -#include <xorg-config.h> -#endif - -#include <stdio.h> -#include <stdlib.h> -#include <dlfcn.h> - -#include <X11/Xos.h> -#include "os.h" - -#include "loader.h" -#include "dlloader.h" - -#if defined(DL_LAZY) -#define DLOPEN_LAZY DL_LAZY -#elif defined(RTLD_LAZY) -#define DLOPEN_LAZY RTLD_LAZY -#elif defined(__FreeBSD__) -#define DLOPEN_LAZY 1 -#else -#define DLOPEN_LAZY 0 -#endif - -#if defined(LD_GLOBAL) -#define DLOPEN_GLOBAL LD_GLOBAL -#elif defined(RTLD_GLOBAL) -#define DLOPEN_GLOBAL RTLD_GLOBAL -#else -#define DLOPEN_GLOBAL 0 -#endif - -#if defined(CSRG_BASED) && !defined(__ELF__) -#define DLSYM_PREFIX "_" -#else -#define DLSYM_PREFIX "" -#endif - -/* Hooray, yet another open coded linked list! FIXME */ -typedef struct DLModuleList { - void *module; - struct DLModuleList *next; -} DLModuleList; - -static DLModuleList *dlModuleList = NULL; - -static void * -DLFindSymbolLocal(pointer module, const char *name) -{ - void *p; - char *n; - - static const char symPrefix[] = DLSYM_PREFIX; - - if (sizeof(symPrefix) > 1) { - n = malloc(strlen(symPrefix) + strlen(name) + 1); - sprintf(n, "%s%s", symPrefix, name); - name = n; - } - - p = dlsym(module, name); - - if (sizeof(symPrefix) > 1) - free(n); - - return p; -} - -static void *global_scope = NULL; - -void * -DLFindSymbol(const char *name) -{ - DLModuleList *l; - void *p; - - p = dlsym(RTLD_DEFAULT, name); - if (p != NULL) - return p; - - for (l = dlModuleList; l != NULL; l = l->next) { - p = DLFindSymbolLocal(l->module, name); - if (p) - return p; - } - - if (!global_scope) - global_scope = dlopen(NULL, DLOPEN_LAZY | DLOPEN_GLOBAL); - - if (global_scope) - return DLFindSymbolLocal(global_scope, name); - - return NULL; -} - -void * -DLLoadModule(loaderPtr modrec, int flags) -{ - void * dlfile; - DLModuleList *l; - int dlopen_flags; - - if (flags & LD_FLAG_GLOBAL) - dlopen_flags = DLOPEN_LAZY | DLOPEN_GLOBAL; - else - dlopen_flags = DLOPEN_LAZY; - dlfile = dlopen(modrec->name, dlopen_flags); - if (dlfile == NULL) { - ErrorF("dlopen: %s\n", dlerror()); - return NULL; - } - - l = malloc(sizeof(DLModuleList)); - l->module = dlfile; - l->next = dlModuleList; - dlModuleList = l; - - return (void *)dlfile; -} - -void -DLUnloadModule(void *modptr) -{ - DLModuleList *l, *p; - - /* remove it from dlModuleList. */ - if (dlModuleList->module == modptr) { - l = dlModuleList; - dlModuleList = l->next; - free(l); - } else { - p = dlModuleList; - for (l = dlModuleList->next; l != NULL; l = l->next) { - if (l->module == modptr) { - p->next = l->next; - free(l); - break; - } - p = l; - } - } - dlclose(modptr); -} |