os/bluestore: fix error handling of posix_fallocate() #10277
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According to Linux man page: posix_fallocate() returns zero on success, or an error number on failure. Note that errno is not set. Signed-off-by: xie xingguo <xie.xingguo@zte.com.cn>
The strlen() will automatically exclude the NUL terminator of a literal constant. Also by calling strlen(), we know that we are definitely operate on a string instead of something odd. Signed-off-by: xie xingguo <xie.xingguo@zte.com.cn>
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According to Linux man page:
posix_fallocate() returns zero on success, or an error number on failure.
Note that errno is not set.
Signed-off-by: xie xingguo xie.xingguo@zte.com.cn