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