seap-descriptor.h
/*
* Copyright 2009 Red Hat Inc., Durham, North Carolina.
* All Rights Reserved.
*
* This library 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.
*
* This library 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Authors:
* "Daniel Kopecek" <dkopecek@redhat.com>
*/
#pragma once
#ifndef _SEAP_DESCRIPTOR_H
#define _SEAP_DESCRIPTOR_H
#include <errno.h>
#include <pthread.h>
#include <stdint.h>
#include "generic/bitmap.h"
#include "generic/rbt/rbt.h"
#include "_sexp-types.h"
#include "_seap-packetq.h"
#include "_sexp-parser.h"
#include "_sexp-output.h"
#include "_seap-command.h"
#include "public/seap-scheme.h"
#include "public/seap-message.h"
#include "public/seap-command.h"
#include "public/seap-error.h"
#include "../../../common/util.h"
OSCAP_HIDDEN_START;
/*
* Descriptor table + related stuff
*/
typedef struct {
SEAP_msgid_t next_id;
SEXP_ostate_t *ostate; /* Output state */
SEXP_pstate_t *pstate; /* Parser state */
SEAP_scheme_t scheme; /* Protocol/Scheme used for this descriptor */
void *scheme_data; /* Protocol/Scheme related data */
SEXP_t *msg_queue;
rbt_t *err_queue;
SEXP_t *cmd_queue;
SEAP_packetq_t pck_queue;
pthread_mutex_t w_lock;
pthread_mutex_t r_lock;
SEAP_cmdid_t next_cid;
SEAP_cmdtbl_t *cmd_c_table; /* Local SEAP commands */
SEAP_cmdtbl_t *cmd_w_table; /* Waiting SEAP commands */
} SEAP_desc_t;
#define SEAP_DESC_FDIN 0x00000001
#define SEAP_DESC_FDOUT 0x00000002
#define SEAP_DESC_SELF -1
typedef struct {
rbt_t *tree;
bitmap_t *bmap;
} SEAP_desctable_t;
#define SEAP_DESCTBL_INITIALIZER { NULL, NULL }
#define SEAP_BUFFER_SIZE 2*4096
#define SEAP_MAX_OPENDESC 128
#define SDTABLE_REALLOC_ADD 4
int SEAP_desc_add (SEAP_desctable_t *sd_table, SEXP_pstate_t *pstate, SEAP_scheme_t scheme, void *scheme_data);
int SEAP_desc_del (SEAP_desctable_t *sd_table, int sd);
SEAP_desc_t *SEAP_desc_get (SEAP_desctable_t *sd_table, int sd);
SEAP_desctable_t *SEAP_desctable_new (void);
void SEAP_desctable_free(SEAP_desctable_t *sd_table);
void SEAP_desc_free(SEAP_desc_t *dsc);
static inline int SEAP_desc_trylock (pthread_mutex_t *m)
{
switch (pthread_mutex_trylock (m)) {
case 0:
return (1);
case EBUSY:
return (0);
case EINVAL:
errno = EINVAL;
/* FALLTHROUGH */
default:
return (-1);
}
}
static inline int SEAP_desc_lock (pthread_mutex_t *m)
{
switch (pthread_mutex_lock (m)) {
case 0:
return (1);
default:
return (-1);
}
}
static inline int SEAP_desc_unlock (pthread_mutex_t *m)
{
switch (pthread_mutex_unlock (m)) {
case 0:
return (1);
default:
return (-1);
}
}
#define DESC_TRYRLOCK(d) SEAP_desc_trylock (&((d)->r_lock))
#define DESC_RLOCK(d) SEAP_desc_lock (&((d)->r_lock))
#define DESC_RUNLOCK(d) SEAP_desc_unlock (&((d)->r_lock))
#define DESC_TRYWLOCK(d) SEAP_desc_trylock (&((d)->w_lock))
#define DESC_WLOCK(d) SEAP_desc_lock (&((d)->w_lock))
#define DESC_WUNLOCK(d) SEAP_desc_unlock (&((d)->w_lock))
SEAP_msgid_t SEAP_desc_genmsgid (SEAP_desctable_t *sd_table, int sd);
SEAP_cmdid_t SEAP_desc_gencmdid (SEAP_desctable_t *sd_table, int sd);
OSCAP_HIDDEN_END;
#endif /* _SEAP_DESCRIPTOR_H */