6a772bd6bc
2002-12-06 Marcus Brinkmann <marcus@g10code.de> * gpgme.texi (Memory Based Data Buffers): New subsection. (File Based Data Buffers): Likewise. (Callback Based Data Buffers): Likewise. (Manipulating Data Buffers): Update interfaces. Add gpgme_data_seek. * gpgme.texi (Engine Version Check): Remove gpgme_chec_engine. gpgme/ 2002-12-06 Marcus Brinkmann <marcus@g10code.de> * data.h (gpgme_data_release_cb): Change return type to void. (gpgme_data_read_cb): Change return type to ssize_t. * data.c (gpgme_data_read): Likewise. * data-stream.c (stream_read): Likewise. * data-fd.c (fd_read): Likewise. * data-mem.c (mem_read): Likewise. (mem_release): Change return type to void. * data-user.c (user_read): Change return type to ssize_t. (user_release): Change return type to void. * data-compat.c (old_user_read): Change return type to ssize_t. * gpgme.h (GpgmeDataReadCb): Likewise. (gpgme_data_read): Likewise. (GpgmeDataSeekCb): Change return type to off_t.
70 lines
1.5 KiB
C
70 lines
1.5 KiB
C
/* data-fd.c - A file descripor based data object.
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Copyright (C) 2002 g10 Code GmbH
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This file is part of GPGME.
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GPGME is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GPGME is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GPGME; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#if HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <unistd.h>
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#include <sys/types.h>
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#include "data.h"
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static ssize_t
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fd_read (GpgmeData dh, void *buffer, size_t size)
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{
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return read (dh->data.fd, buffer, size);
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}
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static ssize_t
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fd_write (GpgmeData dh, const void *buffer, size_t size)
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{
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return write (dh->data.fd, buffer, size);
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}
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static off_t
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fd_seek (GpgmeData dh, off_t offset, int whence)
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{
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return lseek (dh->data.fd, offset, whence);
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}
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static struct gpgme_data_cbs fd_cbs =
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{
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fd_read,
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fd_write,
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fd_seek,
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NULL
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};
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GpgmeError
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gpgme_data_new_from_fd (GpgmeData *dh, int fd)
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{
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GpgmeError err = _gpgme_data_new (dh, &fd_cbs);
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if (err)
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return err;
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(*dh)->data.fd = fd;
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return 0;
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}
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