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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1997, 2012 Oracle and/or its affiliates. All rights reserved.
*
* $Id$
*/
#include "db_config.h"
#include "db_int.h"
/*
* __os_qnx_region_open --
* Open a shared memory region file using POSIX shm_open.
*
* PUBLIC: #ifdef HAVE_QNX
* PUBLIC: int __os_qnx_region_open
* PUBLIC: __P((ENV *, const char *, int, int, DB_FH **));
* PUBLIC: #endif
*/
int
__os_qnx_region_open(env, name, oflags, mode, fhpp)
ENV *env;
const char *name;
int oflags, mode;
DB_FH **fhpp;
{
DB_FH *fhp;
int fcntl_flags;
int ret;
/*
* Allocate the file handle and copy the file name. We generally only
* use the name for verbose or error messages, but on systems where we
* can't unlink temporary files immediately, we use the name to unlink
* the temporary file when the file handle is closed.
*
* Lock the ENV handle and insert the new file handle on the list.
*/
if ((ret = __os_calloc(env, 1, sizeof(DB_FH), &fhp)) != 0)
return (ret);
if ((ret = __os_strdup(env, name, &fhp->name)) != 0)
goto err;
if (env != NULL) {
MUTEX_LOCK(env, env->mtx_env);
TAILQ_INSERT_TAIL(&env->fdlist, fhp, q);
MUTEX_UNLOCK(env, env->mtx_env);
F_SET(fhp, DB_FH_ENVLINK);
}
/*
* Once we have created the object, we don't need the name
* anymore. Other callers of this will convert themselves.
*/
if ((fhp->fd = shm_open(name, oflags, mode)) == -1) {
ret = __os_posix_err(__os_get_syserr());
err: (void)__os_closehandle(env, fhp);
return (ret);
}
F_SET(fhp, DB_FH_OPENED);
#ifdef HAVE_FCNTL_F_SETFD
/* Deny file descriptor access to any child process. */
if ((fcntl_flags = fcntl(fhp->fd, F_GETFD)) == -1 ||
fcntl(fhp->fd, F_SETFD, fcntl_flags | FD_CLOEXEC) == -1) {
ret = __os_get_syserr();
__db_syserr(env, ret, DB_STR("0001", "fcntl(F_SETFD)"));
(void)__os_closehandle(env, fhp);
return (__os_posix_err(ret));
}
#else
COMPQUIET(fcntl_flags, 0);
#endif
F_SET(fhp, DB_FH_OPENED);
*fhpp = fhp;
return (0);
}
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