#include <string.h>
#include <stdio.h>
#include <stdlib.h>
+
+#include "eglstring.h"
#include "eglconfig.h"
#include "eglcontext.h"
#include "egldefines.h"
#include "eglsurface.h"
#include "eglimage.h"
-#if defined(_EGL_PLATFORM_POSIX)
+#if defined(_EGL_OS_UNIX)
#include <dlfcn.h>
#include <sys/types.h>
#include <dirent.h>
/**
* Wrappers for dlopen/dlclose()
*/
-#if defined(_EGL_PLATFORM_WINDOWS)
+#if defined(_EGL_OS_WINDOWS)
/* XXX Need to decide how to do dynamic name lookup on Windows */
-static const char DefaultDriverName[] = "TBD";
+static const char *DefaultDriverNames[] = {
+ "egl_gdi_swrast"
+};
typedef HMODULE lib_handle;
}
-#elif defined(_EGL_PLATFORM_POSIX)
+#elif defined(_EGL_OS_UNIX)
-static const char DefaultDriverName[] = "egl_glx";
+static const char *DefaultDriverNames[] = {
+ "egl_dri2",
+ "egl_glx"
+};
typedef void * lib_handle;
}
-#else /* _EGL_PLATFORM_NO_OS */
-
-
-static const char DefaultDriverName[] = "builtin";
-
-typedef void *lib_handle;
-
-static INLINE void *
-open_library(const char *filename)
-{
- return (void *) filename;
-}
-
-static INLINE void
-close_library(void *lib)
-{
-}
-
-
-static const char *
-library_suffix(void)
-{
- return NULL;
-}
-
-
#endif
_eglLog(_EGL_DEBUG, "dlopen(%s)", driverPath);
lib = open_library(driverPath);
-#if defined(_EGL_PLATFORM_WINDOWS)
+#if defined(_EGL_OS_WINDOWS)
/* XXX untested */
if (lib)
mainFunc = (_EGLMain_t) GetProcAddress(lib, "_eglMain");
-#elif defined(_EGL_PLATFORM_POSIX)
+#elif defined(_EGL_OS_UNIX)
if (lib) {
- mainFunc = (_EGLMain_t) dlsym(lib, "_eglMain");
+ union {
+ _EGLMain_t func;
+ void *ptr;
+ } tmp = { NULL };
+ /* direct cast gives a warning when compiled with -pedantic */
+ tmp.ptr = dlsym(lib, "_eglMain");
+ mainFunc = tmp.func;
if (!mainFunc)
error = dlerror();
}
else {
error = dlerror();
}
-#else /* _EGL_PLATFORM_NO_OS */
- /* must be the default driver name */
- if (strcmp(driverPath, DefaultDriverName) == 0)
- mainFunc = (_EGLMain_t) _eglMain;
- else
- error = "not builtin driver";
#endif
if (!lib) {
_EGLDriver *best_drv = NULL;
EGLint best_score = -1, i;
+ /*
+ * this function is called after preloading and the drivers never change
+ * after preloading.
+ */
for (i = 0; i < _eglGlobal.NumDrivers; i++) {
_EGLDriver *drv = _eglGlobal.Drivers[i];
EGLint score;
/**
- * A preload function for use with _eglPreloadForEach. The preload data is the
+ * A loader function for use with _eglPreloadForEach. The loader data is the
* filename of the driver. This function stops on the first valid driver.
*/
static EGLBoolean
-_eglPreloadFile(const char *dir, size_t len, void *preload_data)
+_eglLoaderFile(const char *dir, size_t len, void *loader_data)
{
_EGLDriver *drv;
char path[1024];
- const char *filename = (const char *) preload_data;
+ const char *filename = (const char *) loader_data;
size_t flen = strlen(filename);
/* make a full path */
len += flen;
path[len] = '\0';
- drv = _eglLoadDriver(path, NULL);
- /* fix the path and load again */
- if (!drv && library_suffix()) {
+ if (library_suffix() == NULL || strstr(path, library_suffix()))
+ drv = _eglLoadDriver(path, NULL);
+ else {
const char *suffix = library_suffix();
size_t slen = strlen(suffix);
const char *p;
if (need_suffix && len + slen + 1 <= sizeof(path)) {
strcpy(path + len, suffix);
drv = _eglLoadDriver(path, NULL);
+ } else {
+ drv = NULL;
}
}
if (!drv)
/**
- * A preload function for use with _eglPreloadForEach. The preload data is the
+ * A loader function for use with _eglPreloadForEach. The loader data is the
* pattern (prefix) of the files to look for.
*/
static EGLBoolean
-_eglPreloadPattern(const char *dir, size_t len, void *preload_data)
+_eglLoaderPattern(const char *dir, size_t len, void *loader_data)
{
-#if defined(_EGL_PLATFORM_POSIX)
+#if defined(_EGL_OS_UNIX)
const char *prefix, *suffix;
size_t prefix_len, suffix_len;
DIR *dirp;
if (!dirp)
return EGL_TRUE;
- prefix = (const char *) preload_data;
+ prefix = (const char *) loader_data;
prefix_len = strlen(prefix);
suffix = library_suffix();
suffix_len = (suffix) ? strlen(suffix) : 0;
if (strncmp(dirent->d_name, prefix, prefix_len) != 0)
continue;
/* match the suffix */
- p = dirent->d_name + dirent_len - suffix_len;
- if (p < dirent->d_name || strcmp(p, suffix) != 0)
- continue;
+ if (suffix) {
+ p = dirent->d_name + dirent_len - suffix_len;
+ if (p < dirent->d_name || strcmp(p, suffix) != 0)
+ continue;
+ }
/* make a full path and load the driver */
if (len + dirent_len + 1 <= sizeof(path)) {
closedir(dirp);
return EGL_TRUE;
-#else /* _EGL_PLATFORM_POSIX */
+#else /* _EGL_OS_UNIX */
/* stop immediately */
return EGL_FALSE;
#endif
*/
static EGLint
_eglPreloadForEach(const char *search_path,
- EGLBoolean (*preload)(const char *, size_t, void *),
- void *preload_data)
+ EGLBoolean (*loader)(const char *, size_t, void *),
+ void *loader_data)
{
const char *cur, *next;
size_t len;
next = strchr(cur, ':');
len = (next) ? next - cur : strlen(cur);
- if (!preload(cur, len, preload_data))
+ if (!loader(cur, len, loader_data))
break;
cur = (next) ? next + 1 : NULL;
{
static const char *search_path;
-#if defined(_EGL_PLATFORM_POSIX) || defined(_EGL_PLATFORM_WINDOWS)
+#if defined(_EGL_OS_UNIX) || defined(_EGL_OS_WINDOWS)
if (!search_path) {
static char buffer[1024];
const char *p;
int ret;
p = getenv("EGL_DRIVERS_PATH");
+#if defined(_EGL_OS_UNIX)
+ if (p && (geteuid() != getuid() || getegid() != getgid())) {
+ _eglLog(_EGL_DEBUG,
+ "ignore EGL_DRIVERS_PATH for setuid/setgid binaries");
+ p = NULL;
+ }
+#endif /* _EGL_OS_UNIX */
+
if (p) {
- ret = snprintf(buffer, sizeof(buffer),
+ ret = _eglsnprintf(buffer, sizeof(buffer),
"%s:%s", p, _EGL_DRIVER_SEARCH_DIR);
if (ret > 0 && ret < sizeof(buffer))
search_path = buffer;
static EGLBoolean
_eglPreloadUserDriver(void)
{
-#if defined(_EGL_PLATFORM_POSIX) || defined(_EGL_PLATFORM_WINDOWS)
const char *search_path = _eglGetSearchPath();
char *env;
env = getenv("EGL_DRIVER");
-#if defined(_EGL_PLATFORM_POSIX)
- if (env && strchr(env, '/'))
+#if defined(_EGL_OS_UNIX)
+ if (env && strchr(env, '/')) {
search_path = "";
-#endif
+ if ((geteuid() != getuid() || getegid() != getgid())) {
+ _eglLog(_EGL_DEBUG,
+ "ignore EGL_DRIVER for setuid/setgid binaries");
+ env = NULL;
+ }
+ }
+#endif /* _EGL_OS_UNIX */
if (!env)
return EGL_FALSE;
- if (!_eglPreloadForEach(search_path, _eglPreloadFile, (void *) env)) {
+ if (!_eglPreloadForEach(search_path, _eglLoaderFile, (void *) env)) {
_eglLog(_EGL_WARNING, "EGL_DRIVER is set to an invalid driver");
return EGL_FALSE;
}
return EGL_TRUE;
-#else /* _EGL_PLATFORM_POSIX || _EGL_PLATFORM_WINDOWS */
- return EGL_FALSE;
-#endif
}
/**
- * Preload display drivers.
+ * Preload platform drivers.
*
- * Display drivers are a set of drivers that support a certain display system.
- * The display system may be specified by EGL_DISPLAY.
+ * Platform drivers are a set of drivers that support a certain window system.
+ * The window system may be specified by EGL_PLATFORM.
*
* FIXME This makes libEGL a memory hog if an user driver is not specified and
- * there are many display drivers.
+ * there are many platform drivers.
*/
static EGLBoolean
-_eglPreloadDisplayDrivers(void)
+_eglPreloadPlatformDrivers(void)
{
-#if defined(_EGL_PLATFORM_POSIX)
const char *dpy;
char prefix[32];
int ret;
- dpy = getenv("EGL_DISPLAY");
+ dpy = getenv("EGL_PLATFORM");
+ /* try deprecated env variable */
if (!dpy || !dpy[0])
- dpy = _EGL_DEFAULT_DISPLAY;
+ dpy = getenv("EGL_DISPLAY");
+ if (!dpy || !dpy[0])
+ dpy = _EGL_DEFAULT_PLATFORM;
if (!dpy || !dpy[0])
return EGL_FALSE;
- ret = snprintf(prefix, sizeof(prefix), "egl_%s_", dpy);
+ ret = _eglsnprintf(prefix, sizeof(prefix), "egl_%s_", dpy);
if (ret < 0 || ret >= sizeof(prefix))
return EGL_FALSE;
return (_eglPreloadForEach(_eglGetSearchPath(),
- _eglPreloadPattern, (void *) prefix) > 0);
-#else /* _EGL_PLATFORM_POSIX */
- return EGL_FALSE;
-#endif
-}
-
-
-/**
- * Preload the default driver.
- */
-static EGLBoolean
-_eglPreloadDefaultDriver(void)
-{
- return (_eglPreloadForEach(_eglGetSearchPath(),
- _eglPreloadFile, (void *) DefaultDriverName) > 0);
+ _eglLoaderPattern, (void *) prefix) > 0);
}
{
EGLBoolean loaded;
+ /* protect the preloading process */
+ _eglLockMutex(_eglGlobal.Mutex);
+
/* already preloaded */
- if (_eglGlobal.NumDrivers)
+ if (_eglGlobal.NumDrivers) {
+ _eglUnlockMutex(_eglGlobal.Mutex);
return EGL_TRUE;
+ }
loaded = (_eglPreloadUserDriver() ||
- _eglPreloadDisplayDrivers() ||
- _eglPreloadDefaultDriver());
+ _eglPreloadPlatformDrivers());
+
+ _eglUnlockMutex(_eglGlobal.Mutex);
return loaded;
}
-
/**
* Unload preloaded drivers.
*/
_eglUnloadDrivers(void)
{
EGLint i;
+
+ /* this is called at atexit time */
for (i = 0; i < _eglGlobal.NumDrivers; i++) {
_EGLDriver *drv = _eglGlobal.Drivers[i];
lib_handle handle = drv->LibHandle;
_eglGlobal.NumDrivers = 0;
}
+_EGLDriver *
+_eglLoadDefaultDriver(EGLDisplay dpy, EGLint *major, EGLint *minor)
+{
+ _EGLDriver *drv = NULL;
+ int i;
+
+ _eglLockMutex(_eglGlobal.Mutex);
+
+ for (i = 0; i < ARRAY_SIZE(DefaultDriverNames); i++) {
+ _eglPreloadForEach(_eglGetSearchPath(),
+ _eglLoaderFile, (void *) DefaultDriverNames[i]);
+ if (_eglGlobal.NumDrivers == 0)
+ continue;
+ drv = _eglGlobal.Drivers[0];
+ if (drv->API.Initialize(drv, dpy, major, minor))
+ break;
+ _eglUnloadDrivers();
+ }
+
+ _eglUnlockMutex(_eglGlobal.Mutex);
+
+ return _eglGlobal.NumDrivers > 0 ? drv : NULL;
+}
+
+
+/**
+ * Return the native platform. It is the platform of the EGL native types.
+ */
+_EGLPlatformType
+_eglGetNativePlatform(void)
+{
+ return _EGL_NATIVE_PLATFORM;
+}
+
/**
* Plug all the available fallback routines into the given driver's
}
+/**
+ * Invoke a callback function on each EGL search path.
+ *
+ * The first argument of the callback function is the name of the search path.
+ * The second argument is the length of the name.
+ */
+void
+_eglSearchPathForEach(EGLBoolean (*callback)(const char *, size_t, void *),
+ void *callback_data)
+{
+ const char *search_path = _eglGetSearchPath();
+ _eglPreloadForEach(search_path, callback, callback_data);
+}
+
+
/**
* Set the probe cache at the given key.
*
projects / mesa.git / blobdiff