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authorChangli Gao <xiaosuo@gmail.com>2009-11-04 09:09:52 +0100
committerJens Axboe <jens.axboe@oracle.com>2009-11-04 09:09:52 +0100
commitcc56f7de7f00d188c7c4da1e9861581853b9e92f (patch)
tree4794c8e5b7c7aec176f695dfc9d723d4a73e3ba9 /block
parentf21121cde6e617b90cd03ce083652ca543004dc2 (diff)
sendfile(): check f_op.splice_write() rather than f_op.sendpage()
sendfile(2) was reworked with the splice infrastructure, but it still checks f_op.sendpage() instead of f_op.splice_write() wrongly. Although if f_op.sendpage() exists, f_op.splice_write() always exists at the same time currently, the assumption will be broken in future silently. This patch also brings a side effect: sendfile(2) can work with any output file. Some security checks related to f_op are added too. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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