gnutls_record_send_file(3) — Linux manual page
gnutls_record_send_file(3) gnutls gnutls_record_send_file(3)
NAME
gnutls_record_send_file - API function
SYNOPSIS
#include <gnutls/gnutls.h>
ssize_t gnutls_record_send_file(gnutls_session_t session, int fd,
off_t * offset, size_t count);
ARGUMENTS
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
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
The number of bytes sent, or a negative error code.
REPORTING BUGS
Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org
COPYRIGHT
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
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
https://www.gnutls.org/manual/
COLOPHON
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