6d0d8e7ba0
* configure.ac (NEED__FILE_OFFSET_BITS): Change to define gpgme_off_t and gpgme_ssize_t. (API__OFF_T, API__SSIZE_T): New ac_subst. * src/gpgme.h.in: Replace all ssize_t and off_t by ac_subst macros. * src/assuan-support.c, src/ath-pthread.c, src/ath.c, src/ath.h * src/data-compat.c, src/data-fd.c, src/data-mem.c, src/data-stream.c * src/data-user.c, src/data.c, src/data.h, src/engine-gpgsm.c * src/engine-uiserver.c, src/gpgme-tool.c, src/gpgme.c: Replace off_t by gpgme_off_t and sszie_t by gpgme_ssize_t. * src/ath-pthread.c, src/ath.h: Include gpgme.h. -- For a detailed description, see the gpgme.texi diff.
143 lines
3.2 KiB
C
143 lines
3.2 KiB
C
/* data-fd.c - A file descripor based data object.
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Copyright (C) 2002, 2004 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 Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of
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the License, or (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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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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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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#include "debug.h"
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#include "data.h"
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#if defined(HAVE_W32CE_SYSTEM) && !defined(__MINGW32CE__)
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/* We need to provide replacements for read, write and lseek. They
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are taken from the cegcc runtime files, written by Pedro Alves
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<pedro_alves@portugalmail.pt> in Feb 2007 and placed in the public
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domain. (cf. cegcc/src/mingw/mingwex/wince/) */
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#include <windows.h>
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static int
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read (int fildes, void *buf, unsigned int bufsize)
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{
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DWORD NumberOfBytesRead;
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if (bufsize > 0x7fffffff)
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bufsize = 0x7fffffff;
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if (!ReadFile ((HANDLE) fildes, buf, bufsize, &NumberOfBytesRead, NULL))
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return -1;
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return (int) NumberOfBytesRead;
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}
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static int
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write (int fildes, const void *buf, unsigned int bufsize)
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{
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DWORD NumberOfBytesWritten;
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if (bufsize > 0x7fffffff)
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bufsize = 0x7fffffff;
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if (!WriteFile ((HANDLE) fildes, buf, bufsize, &NumberOfBytesWritten, NULL))
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return -1;
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return (int) NumberOfBytesWritten;
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}
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static long
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lseek (int fildes, long offset, int whence)
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{
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DWORD mode;
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switch (whence)
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{
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case SEEK_SET:
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mode = FILE_BEGIN;
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break;
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case SEEK_CUR:
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mode = FILE_CURRENT;
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break;
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case SEEK_END:
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mode = FILE_END;
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break;
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default:
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/* Specify an invalid mode so SetFilePointer catches it. */
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mode = (DWORD)-1;
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}
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return (long) SetFilePointer ((HANDLE) fildes, offset, NULL, mode);
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}
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#endif /*HAVE_W32CE_SYSTEM && !__MINGW32CE__*/
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static gpgme_ssize_t
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fd_read (gpgme_data_t 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 gpgme_ssize_t
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fd_write (gpgme_data_t 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 gpgme_off_t
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fd_seek (gpgme_data_t dh, gpgme_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 int
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fd_get_fd (gpgme_data_t dh)
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{
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return (dh->data.fd);
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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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fd_get_fd
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};
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gpgme_error_t
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gpgme_data_new_from_fd (gpgme_data_t *r_dh, int fd)
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{
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gpgme_error_t err;
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TRACE_BEG1 (DEBUG_DATA, "gpgme_data_new_from_fd", r_dh, "fd=0x%x", fd);
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err = _gpgme_data_new (r_dh, &fd_cbs);
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if (err)
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return TRACE_ERR (err);
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(*r_dh)->data.fd = fd;
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return TRACE_SUC1 ("dh=%p", *r_dh);
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}
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