diff options
Diffstat (limited to 'hw/xfree86/loader/loader.c')
| -rw-r--r-- | hw/xfree86/loader/loader.c | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/hw/xfree86/loader/loader.c b/hw/xfree86/loader/loader.c new file mode 100644 index 0000000..159b611 --- /dev/null +++ b/hw/xfree86/loader/loader.c @@ -0,0 +1,208 @@ +/* + * Copyright 1995-1998 by Metro Link, 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 Metro Link, Inc. not be used in + * advertising or publicity pertaining to distribution of the software without + * specific, written prior permission. Metro Link, Inc. makes no + * representations about the suitability of this software for any purpose. + * It is provided "as is" without express or implied warranty. + * + * METRO LINK, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL METRO LINK, 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. + */ +/* + * Copyright (c) 1997-2003 by The XFree86 Project, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Except as contained in this notice, the name of the copyright holder(s) + * and author(s) shall not be used in advertising or otherwise to promote + * the sale, use or other dealings in this Software without prior written + * authorization from the copyright holder(s) and author(s). + */ + +#ifdef HAVE_XORG_CONFIG_H +#include <xorg-config.h> +#endif + +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <sys/types.h> +#include <unistd.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <string.h> +#include <stdarg.h> + +#include "os.h" +#include "loader.h" +#include "loaderProcs.h" +#include "xf86.h" +#include "xf86Priv.h" +#include "compiler.h" + +#ifdef HAVE_DLFCN_H + +#include <dlfcn.h> +#include <X11/Xos.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 + +#else +#error i have no dynamic linker and i must scream +#endif + +extern void *xorg_symbols[]; + +void +LoaderInit(void) +{ + xf86MsgVerb(X_INFO, 2, "Loader magic: %p\n", (void *)xorg_symbols); + xf86MsgVerb(X_INFO, 2, "Module ABI versions:\n"); + xf86ErrorFVerb(2, "\t%s: %d.%d\n", ABI_CLASS_ANSIC, + GET_ABI_MAJOR(LoaderVersionInfo.ansicVersion), + GET_ABI_MINOR(LoaderVersionInfo.ansicVersion)); + xf86ErrorFVerb(2, "\t%s: %d.%d\n", ABI_CLASS_VIDEODRV, + GET_ABI_MAJOR(LoaderVersionInfo.videodrvVersion), + GET_ABI_MINOR(LoaderVersionInfo.videodrvVersion)); + xf86ErrorFVerb(2, "\t%s : %d.%d\n", ABI_CLASS_XINPUT, + GET_ABI_MAJOR(LoaderVersionInfo.xinputVersion), + GET_ABI_MINOR(LoaderVersionInfo.xinputVersion)); + xf86ErrorFVerb(2, "\t%s : %d.%d\n", ABI_CLASS_EXTENSION, + GET_ABI_MAJOR(LoaderVersionInfo.extensionVersion), + GET_ABI_MINOR(LoaderVersionInfo.extensionVersion)); + +} + +/* Public Interface to the loader. */ + +void * +LoaderOpen(const char *module, int *errmaj, int *errmin) +{ + void *ret; + +#if defined(DEBUG) + ErrorF("LoaderOpen(%s)\n", module); +#endif + + xf86Msg(X_INFO, "Loading %s\n", module); + + if (!(ret = dlopen(module, DLOPEN_LAZY | DLOPEN_GLOBAL))) { + xf86Msg(X_ERROR, "Failed to load %s: %s\n", module, dlerror()); + if (errmaj) + *errmaj = LDR_NOLOAD; + if (errmin) + *errmin = LDR_NOLOAD; + return NULL; + } + + return ret; +} + +void * +LoaderSymbol(const char *name) +{ + static void *global_scope = NULL; + void *p; + + p = dlsym(RTLD_DEFAULT, name); + if (p != NULL) + return p; + + if (!global_scope) + global_scope = dlopen(NULL, DLOPEN_LAZY | DLOPEN_GLOBAL); + + if (global_scope) + return dlsym(global_scope, name); + + return NULL; +} + +void +LoaderUnload(const char *name, void *handle) +{ + xf86Msg(X_INFO, "Unloading %s\n", name); + if (handle) + dlclose(handle); +} + +unsigned long LoaderOptions = 0; + +void +LoaderSetOptions(unsigned long opts) +{ + LoaderOptions |= opts; +} + +Bool +LoaderShouldIgnoreABI(void) +{ + return (LoaderOptions & LDR_OPT_ABI_MISMATCH_NONFATAL) != 0; +} + +int +LoaderGetABIVersion(const char *abiclass) +{ + struct { + const char *name; + int version; + } classes[] = { + { ABI_CLASS_ANSIC, LoaderVersionInfo.ansicVersion }, + { ABI_CLASS_VIDEODRV, LoaderVersionInfo.videodrvVersion }, + { ABI_CLASS_XINPUT, LoaderVersionInfo.xinputVersion }, + { ABI_CLASS_EXTENSION, LoaderVersionInfo.extensionVersion }, + { ABI_CLASS_FONT, LoaderVersionInfo.fontVersion }, + { NULL, 0 } + }; + int i; + + for(i = 0; classes[i].name; i++) { + if(!strcmp(classes[i].name, abiclass)) { + return classes[i].version; + } + } + + return 0; +} |