glx: fixup symbol name for get_extensions function
glxProbeDriver() concatenates __DRI_DRIVER_GET_EXTENSIONS with driver name to get symbol name for get_extension function. Unfortunately that doesn't work for drivers that have hyphen in their name, e.g. sun4i-drm -- get_extensions() for these uses underscore instead. As result dlsym() doesn't find get_extension() function and AIGLX initialization fails resulting in following message in Xorg.0.log: (EE) AIGLX error: sun4i-drm does not export required DRI extension Replace all non-alpha-numeric characters with underscore to fix the issue. Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
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@ -27,6 +27,7 @@
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#include <dix-config.h>
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#endif
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#include <ctype.h>
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#include <stdint.h>
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#include <errno.h>
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#include <dlfcn.h>
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@ -322,6 +323,15 @@ glxProbeDriver(const char *driverName,
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__DRI_DRIVER_GET_EXTENSIONS, driverName) != -1) {
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const __DRIextension **(*get_extensions)(void);
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for (i = 0; i < strlen(get_extensions_name); i++) {
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/* Replace all non-alphanumeric characters with underscore,
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* since they are not allowed in C symbol names. That fixes up
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* symbol name for drivers with '-drm' suffix
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*/
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if (!isalnum(get_extensions_name[i]))
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get_extensions_name[i] = '_';
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}
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get_extensions = dlsym(driver, get_extensions_name);
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if (get_extensions)
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extensions = get_extensions();
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