buffer_flush man page on Alpinelinux

buffer_flush man page on Alpinelinux

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buffer_flush(3)						       buffer_flush(3)

NAME
       buffer_flush - feed buffer to write function

SYNTAX
       #include <buffer.h>

       int buffer_flush(buffer* b);

DESCRIPTION
       buffer_flush  feeds  a  string  d[0], d[1], ..., d[dlen-1] to the write
       operation by calling

	 op(fd,d,dlen)

       If op successfully handles one or more bytes at the  beginning  of  the
       string,	it  must return the number of bytes handled; if this number is
       smaller than dlen, buffer_flush will call op again with the rest of the
       string.	If  op	does  not  handle any bytes, and does not encounter an
       error, it must return 0, or return -1  with  errno  set	to  EINTR;  in
       either case, buffer_flush will immediately call op again. If op encoun‐
       ters an error, it must return -1 with errno set to something other than
       EINTR; buffer_flush will pass the error to the caller.

       On  success, buffer_flush returns 0. On error, buffer_flush returns -1,
       setting errno appropriately.

SEE ALSO
       buffer_init(3)

							       buffer_flush(3)

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