NAME

       buffer_getn - read binary data from buffer

SYNTAX

       #include <buffer.h>

       ssize_t buffer_getn(buffer* b,char* x,size_t len);

DESCRIPTION

       buffer_getn  copies data to x[0], x[1], ..., x[len-1] from the buffer, calling buffer_feed
       as needed, and returns len.

       If a read error occurs, buffer_getn returns -1 and sets errno appropriately.  It may  then
       have  put  any  number  between  0 and len in the buffer, you can't tell.  That makes this
       function only useful if you don't care when an error occurs.  Use buffer_get otherwise.

       If the read operation signals end-of-file before len bytes were read, buffer_getn  returns
       the number of bytes read from the buffer before end-of-file.

SEE ALSO

       buffer_init(3), buffer_get(3), buffer(3)

                                                                                   buffer_getn(3)