kc3-lang/libevent

2017-12-18T02:02:15

evbuffer_add_file: do not use evbuffer_remove(), instead calc offset for mmap() @ellzey: "when evbuffer_add_file is called and mmap is used, if the offset argument is >0, a mistake happens: add_file removes "offset" byts from the front of the evbuffer. So that means any data that was previously on the buffer is trimmed off by "offset" bytes. Whoops." And even more when offset>0, evbuffer_add_file() still maps whole file, let's calc appropriate offset and length. And here is the wrong fix: https://github.com/libevent/libevent/commit/afca576a052fb8c83e771435169615fce5c56686