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Fix file access race condition.

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Bartosz Taudul 2024-02-07 17:14:31 +01:00
parent 312713b83c
commit 5037742ab0
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GPG Key ID: B7FE2008B7575DF3
1 changed files with 18 additions and 21 deletions
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39
public/client/TracyProfiler.cpp
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@ -3908,32 +3908,29 @@ void Profiler::HandleSymbolCodeQuery( uint64_t symbol, uint32_t size )
void Profiler::HandleSourceCodeQuery( char* data, char* image, uint32_t id )
{
bool ok = false;
struct stat st;
if( stat( data, &st ) == 0 && (uint64_t)st.st_mtime < m_exectime )
FILE* f = fopen( data, "rb" );
if( f )
{
if( st.st_size < ( TargetFrameSize - 16 ) )
struct stat st;
if( fstat( fileno( f ), &st ) == 0 && (uint64_t)st.st_mtime < m_exectime && st.st_size < ( TargetFrameSize - 16 ) )
{
FILE* f = fopen( data, "rb" );
if( f )
auto ptr = (char*)tracy_malloc_fast( st.st_size );
auto rd = fread( ptr, 1, st.st_size, f );
if( rd == (size_t)st.st_size )
{
auto ptr = (char*)tracy_malloc_fast( st.st_size );
auto rd = fread( ptr, 1, st.st_size, f );
fclose( f );
if( rd == (size_t)st.st_size )
{
TracyLfqPrepare( QueueType::SourceCodeMetadata );
MemWrite( &item->sourceCodeMetadata.ptr, (uint64_t)ptr );
MemWrite( &item->sourceCodeMetadata.size, (uint32_t)rd );
MemWrite( &item->sourceCodeMetadata.id, id );
TracyLfqCommit;
ok = true;
}
else
{
tracy_free_fast( ptr );
}
TracyLfqPrepare( QueueType::SourceCodeMetadata );
MemWrite( &item->sourceCodeMetadata.ptr, (uint64_t)ptr );
MemWrite( &item->sourceCodeMetadata.size, (uint32_t)rd );
MemWrite( &item->sourceCodeMetadata.id, id );
TracyLfqCommit;
ok = true;
}
else
{
tracy_free_fast( ptr );
}
}
fclose( f );
}
#ifdef TRACY_DEBUGINFOD