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/* data-fd.c - A file descripor based data object.
Copyright (C) 2002, 2004 g10 Code GmbH
This file is part of GPGME.
GPGME is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of
the License, or (at your option) any later version.
GPGME is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA. */
#if HAVE_CONFIG_H
#include <config.h>
#endif
#include <unistd.h>
#include <sys/types.h>
#include "data.h"
static ssize_t
fd_read (gpgme_data_t dh, void *buffer, size_t size)
{
return read (dh->data.fd, buffer, size);
}
static ssize_t
fd_write (gpgme_data_t dh, const void *buffer, size_t size)
{
return write (dh->data.fd, buffer, size);
}
static off_t
fd_seek (gpgme_data_t dh, off_t offset, int whence)
{
return lseek (dh->data.fd, offset, whence);
}
static int
fd_get_fd (gpgme_data_t dh)
{
return (dh->data.fd);
}
static struct _gpgme_data_cbs fd_cbs =
{
fd_read,
fd_write,
fd_seek,
NULL,
fd_get_fd
};
gpgme_error_t
gpgme_data_new_from_fd (gpgme_data_t *dh, int fd)
{
gpgme_error_t err = _gpgme_data_new (dh, &fd_cbs);
if (err)
return err;
(*dh)->data.fd = fd;
return 0;
}
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