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Changed the way WriteAt() works, and fixed a small bug in SetSize()

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@1157 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stefano Ceccherini 2002-09-24 15:48:09 +00:00
parent bd3f5af3d4
commit 0c444b4265
1 changed files with 10 additions and 4 deletions
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14
src/kits/support/DataIO.cpp
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@ -340,10 +340,17 @@ BMallocIO::WriteAt(off_t pos, const void *buffer, size_t size)
return B_BAD_VALUE;
size_t newSize = max(pos + size, static_cast<off_t>(fLength));
status_t error = SetSize(newSize);
if (error == B_OK)
if (newSize > fMallocSize)
if (SetSize(newSize) != B_OK)
size = 0;
if (size > 0) {
memcpy(fData + pos, buffer, size);
return (error != B_OK ? error : size);
if (pos + size > fLength)
fLength = pos + size;
}
return size;
}
@ -396,7 +403,6 @@ BMallocIO::SetSize(off_t size)
memset(newData + fMallocSize, 0, newSize - fMallocSize);
fData = newData;
fMallocSize = newSize;
fLength = newSize;
} else // couldn't alloc the memory
error = B_NO_MEMORY;
}