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/*-
* Copyright (c) 2001 Networks Associates Technologies, Inc.
* All rights reserved.
*
* This software was developed for the FreeBSD Project by NAI Labs, the
* Security Research Division of Network Associates, Inc. under
* DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
* CHATS research program.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: lomac.c,v 1.5 2001/11/26 19:25:52 bfeldman Exp $
* $FreeBSD$
*/
/*
* This file encapsulates ls's use of LOMAC's ioctl interface. ls uses
* this interface to determine the LOMAC attributes of files.
*/
#include <sys/types.h>
#include <sys/lomacio.h>
#include <err.h>
#include <fts.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "lomac.h"
#define LOMAC_DEVICE "/dev/lomac"
int devlomac; /* file descriptor for LOMAC_DEVICE */
struct lomac_fioctl2 ioctl_args;
/* lomac_start()
*
* in: nothing
* out: nothing
* return: nothing
*
* Makes `devlomac' a fd to LOMAC_DEVICE
*/
void
lomac_start(void) {
if ((devlomac = open(LOMAC_DEVICE, O_RDWR)) == -1)
err(1, "cannot open %s", LOMAC_DEVICE);
}
/* lomac_stop()
*
* in: nothing
* out: nothing
* return: nothing
*
* Closes `devlomac', the fd to LOMAC_DEVICE.
*/
void
lomac_stop(void) {
if (close(devlomac) == -1)
err(1, "cannot close %s", LOMAC_DEVICE);
}
/* get_lattr()
*
* in: ent - FTSENT describing file whose LOMAC attributes we wish to know
* out: nothing
* return: a string describing `ent's LOMAC attributes
*
* This function uses LOMAC's ioctl interface to determine the LOMAC
* attributes of the file described by `ent'.
*
* This function dynamically allocates memory for the attribute strings.
* The caller is responsible for eventually deallocating these strings.
*/
char *
get_lattr(FTSENT *ent) {
char *lattr;
#ifdef NOT_NOW
printf("p%d n%d\n", ent->fts_pathlen, ent->fts_namelen);
printf("ftscycle %x\n", ent->fts_cycle);
printf("ftsparent %x\n", ent->fts_parent);
printf("ftslink %x\n", ent->fts_link);
printf("ftsnumber %x\n", ent->fts_number);
printf("ftslevel %x\n", ent->fts_level);
if (ent->fts_pathlen > 0)
printf("%x : %s\n", ent->fts_path, ent->fts_path);
else
printf("length 0 path\n");
if (ent->fts_namelen > 0)
printf("%x : %s\n", ent->fts_name, ent->fts_name);
else
printf("length 0 name\n");
#endif
/*
* We use ent->fts_level to determine whether or not ent->fts_path
* is valid. This is a hack, but the FTS code doesn't seem to
* NULL the first byte of fts_path or zero fts_pathlen when fts_path
* is invalid, so there didn't seem to be a better way of doing it.
*/
if (ent->fts_level > 0) {
strncpy(ioctl_args.path, ent->fts_path, MAXPATHLEN - 1);
strncat(ioctl_args.path, "/",
MAXPATHLEN - strlen(ioctl_args.path) - 1);
strncat(ioctl_args.path, ent->fts_accpath,
MAXPATHLEN - strlen(ioctl_args.path) - 1);
} else
strncpy(ioctl_args.path, ent->fts_accpath, MAXPATHLEN - 1);
if (ioctl(devlomac, LIOGETFLATTR, &ioctl_args) == -1)
err(1, NULL);
/* we use ioctl_args.path as scratch space to build lattr */
if (ioctl_args.flags != 0)
asprintf(&lattr, "%d.%x", ioctl_args.level, ioctl_args.flags);
else
asprintf(&lattr, "%d", ioctl_args.level);
if (lattr == NULL)
err(1, NULL);
return (lattr);
}
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