android/android_hardware_qcom_display
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part of fix for [2363506] [Sapphire] Video playback broken

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make sure to reject incompatible buffers in special function
  GRALLOC_MODULE_PERFORM_CREATE_HANDLE_FROM_BUFFER

we use ioctl(PMEM_GET_SIZE) to validate that the given buffer is indeed
a pmem buffer.
This commit is contained in:
Mathias Agopian 2010-01-20 13:13:08 -08:00
parent 15d4830e82
commit fd92f42c39
1 changed files with 10 additions and 0 deletions
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10
libgralloc-qsd8k/mapper.cpp
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@ -24,6 +24,7 @@
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <cutils/log.h>
#include <cutils/atomic.h>
@ -31,6 +32,8 @@
#include <hardware/hardware.h>
#include <hardware/gralloc.h>
#include <linux/android_pmem.h>
#include "gralloc_priv.h"
@ -301,6 +304,13 @@ int gralloc_perform(struct gralloc_module_t const* module,
size_t size = va_arg(args, size_t);
size_t offset = va_arg(args, size_t);
void* base = va_arg(args, void*);
// validate that it's indeed a pmem buffer
pmem_region region;
if (ioctl(fd, PMEM_GET_SIZE, &region) < 0) {
break;
}
native_handle_t** handle = va_arg(args, native_handle_t**);
private_handle_t* hnd = (private_handle_t*)native_handle_create(
private_handle_t::sNumFds, private_handle_t::sNumInts);