(0.48) Use fallocate instead of ftruncate #215
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Even if the ftruncate() system call succeeds, this does not guarantee that the underlying filesystem has enough free blocks to support whatever increase in file size that was requested. This can cause SIGBUS errors if writes are attempted in the file. The fallocate() call does guarantee that there is enough space available. Signed-off-by: Christian Despres <[email protected]>
pshipton
approved these changes
Oct 22, 2024
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Even if the ftruncate() system call succeeds, this does not guarantee that the underlying filesystem has enough free blocks to support whatever increase in file size that was requested. This can cause SIGBUS errors if writes are attempted in the file.
The fallocate() call does guarantee that there is enough space available.
Fixes: eclipse-openj9/openj9#20239
Backport of eclipse-omr/omr#7484