c0388656dc
There were a variety of potential 64b problems due to the complete lack of prototype declarations. So, we add a file, isam_prototypes.h, generated mostly by the 'cproto' tool. We also fixed up some errors that having proper prototypes pointed out, mainly in passing ints where pointers were expected and vice versa. The iserase() function was supposed to accept a char *, but was defined as only accepting a char. Fun stuff like that.
120 lines
3.5 KiB
C
120 lines
3.5 KiB
C
/*
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* CDE - Common Desktop Environment
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*
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* Copyright (c) 1993-2012, The Open Group. All rights reserved.
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*
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* These libraries and programs are free software; you can
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* redistribute them and/or modify them under the terms of the GNU
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* Lesser General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* These libraries and programs are distributed in the hope that
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* they will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with these libraries and programs; if not, write
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* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301 USA
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*/
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/*%% (c) Copyright 1993, 1994 Hewlett-Packard Company */
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/*%% (c) Copyright 1993, 1994 International Business Machines Corp. */
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/*%% (c) Copyright 1993, 1994 Sun Microsystems, Inc. */
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/*%% (c) Copyright 1993, 1994 Novell, Inc. */
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/*%% $XConsortium: isopen.c /main/3 1995/10/23 11:42:40 rswiston $ */
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/*
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* Copyright (c) 1988 by Sun Microsystems, Inc.
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*/
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/*
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* isopen.c
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*
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* Description:
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* Open an ISAM file.
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*/
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#include "isam_impl.h"
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#include <netdb.h>
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#include <sys/file.h>
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#include <sys/time.h>
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static int _am_open();
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/*
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* isfd = isopen(isfname, mode)
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*
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* Isopen() determines on which machine the ISAM file resides,
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* checks if the file exists, creates a File access block,
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* and initilizes it. It also checks permissions. Returns an ISAM file
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* descriptor (isfd), or a value of -1 if the open failed.
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*
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* Errors:
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* EBADARG Improper mode parameter
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* EBADFILE ISAM file is corrupted or it is not an NetISAM file
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* EFLOCKED The file is exclusively locked by other process.
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* EFNAME Invalid ISAM file name
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* EFNAME ISAM file does not exist
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* ETOOMANY Too many ISAM file descriptors are in use (128 is the limit)
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*
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* The following error code is "borrowed" from UNIX:
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* EACCES UNIX file system protection denies access to the file:
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* - mode is INOUT or OUTPUT and ISAM file is on
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* a Read-Only mounted file system
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* - UNIX file permissions don't allow access to the file
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*/
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int
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isopen(char *isfname, int mode)
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{
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Fab *fab;
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Isfd isfd;
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enum openmode openmode;
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/*
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* Check if the user is allowed to access the ISAM file.
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* Use UNIX and NFS permissions.
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*/
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/* Get file open mode part of the mode parameter. */
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if ((openmode = _getopenmode(mode)) == OM_BADMODE) {
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_setiserrno2(EBADARG, '9', '0');
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return (NOISFD);
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}
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/* Create a Fab object. */
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fab = _fab_new(isfname,
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openmode,
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(Bool)((mode & ISLENMODE) == ISVARLEN),
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0,
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0);
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if (fab == NULL) {
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return (NOISFD); /* iserrno is set by fab_new */
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}
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/* Get an ISAM file descriptor for this fab */
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if ((isfd = _isfd_insert(fab)) == NOISFD) {
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/* Table of ISAM file descriptors would overflow. */
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_fab_destroy(fab);
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_setiserrno2(ETOOMANY, '9', '0');
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return (NOISFD);
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}
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FAB_ISFDSET(fab, isfd);
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if (_am_open(fab)) {
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_seterr_errcode(&fab->errcode);
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_fab_destroy(fab);
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return (NOISFD);
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}
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isreclen = fab->maxreclen;
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return ((int)isfd); /* Successful isopen() */
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}
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Static int _am_open(Fab *fab)
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{
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return (_amopen(fab->isfname, fab->openmode, &fab->varlength,
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&fab->minreclen, &fab->maxreclen, &fab->isfhandle,
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&fab->curpos, &fab->errcode));
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}
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