gnutls_record_send_file(3) — Linux manual page


gnutls_record_send_file(3)       gnutls       gnutls_record_send_file(3)

NAME         top

       gnutls_record_send_file - API function

SYNOPSIS         top

       #include <gnutls/gnutls.h>

       ssize_t gnutls_record_send_file(gnutls_session_t session, int fd,
       off_t * offset, size_t count);

ARGUMENTS         top

       gnutls_session_t session
                   is a gnutls_session_t type.

       int fd      file descriptor from which to read data.

       off_t * offset
                   Is relative to file offset, denotes the starting
                   location for reading.  after function returns, it
                   point to position following last read byte.

       size_t count
                   is the length of the data in bytes to be read from
                   file and send.

DESCRIPTION         top

       This function sends data from  fd . If KTLS (kernel TLS) is
       enabled, it will use the sendfile() system call to avoid overhead
       of copying data between user space and the kernel. Otherwise,
       this functionality is merely emulated by calling read() and
       gnutls_record_send(). If this implementation is suboptimal, check
       whether KTLS is enabled using gnutls_transport_is_ktls_enabled().

       If  offset is NULL then file offset is incremented by number of
       bytes send, otherwise file offset remains unchanged.

RETURNS         top

       The number of bytes sent, or a negative error code.

REPORTING BUGS         top

       Report bugs to <>.
       Home page:

COPYRIGHT         top

       Copyright © 2001-2023 Free Software Foundation, Inc., and others.
       Copying and distribution of this file, with or without
       modification, are permitted in any medium without royalty
       provided the copyright notice and this notice are preserved.

SEE ALSO         top

       The full documentation for gnutls is maintained as a Texinfo
       manual.  If the /usr/share/doc/gnutls/ directory does not contain
       the HTML form visit

COLOPHON         top

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gnutls                            3.8.2       gnutls_record_send_file(3)