Esempio n. 1
0
/*
 * Create a new indirect link
 *
 * An indirect link is a reference to a data node.  The only useable
 * fields in the link are the link number, parentID, name and text
 * encoding.  All other catalog fields are ignored.
 */
static int
createindirectlink(struct hfsmount *hfsmp, u_int32_t linknum,
			u_int32_t linkparid, char *linkName, cnid_t *linkcnid)
{
	struct FndrFileInfo *fip;
	struct cat_desc desc;
	struct cat_attr attr;
	int result;

	/* Setup the descriptor */
	bzero(&desc, sizeof(desc));
	desc.cd_nameptr = linkName;
	desc.cd_namelen = strlen(linkName);
	desc.cd_parentcnid = linkparid;

	/* Setup the default attributes */
	bzero(&attr, sizeof(attr));
	
	/* links are matched to data nodes by link ID and to volumes by create date */
	attr.ca_rdev = linknum;  /* note: cat backend overloads ca_rdev to be the linknum when nlink = 0 */
	attr.ca_itime = HFSTOVCB(hfsmp)->vcbCrDate;
	attr.ca_mode = S_IFREG;

	fip = (struct FndrFileInfo *)&attr.ca_finderinfo;
	fip->fdType    = SWAP_BE32 (kHardLinkFileType);	/* 'hlnk' */
	fip->fdCreator = SWAP_BE32 (kHFSPlusCreator);	/* 'hfs+' */
	fip->fdFlags   = SWAP_BE16 (kHasBeenInited);

	hfs_global_shared_lock_acquire(hfsmp);
	if (hfsmp->jnl) {
	    if (journal_start_transaction(hfsmp->jnl) != 0) {
			hfs_global_shared_lock_release(hfsmp);
			return EINVAL;
	    }
	}

	/* Create the indirect link directly in the catalog */
	result = cat_create(hfsmp, &desc, &attr, NULL);

	if (result == 0 && linkcnid != NULL)
		*linkcnid = attr.ca_fileid;

	if (hfsmp->jnl) {
	    journal_end_transaction(hfsmp->jnl);
	}
	hfs_global_shared_lock_release(hfsmp);

	return (result);
}
Esempio n. 2
0
poldiff_t *poldiff_create(apol_policy_t * orig_policy, apol_policy_t * mod_policy, poldiff_handle_fn_t fn, void *callback_arg)
{
	poldiff_t *diff = NULL;
	int error;

	if (!orig_policy || !mod_policy) {
		ERR(NULL, "%s", strerror(EINVAL));
		errno = EINVAL;
		return NULL;
	}

	if (!(diff = calloc(1, sizeof(poldiff_t)))) {
		ERR(NULL, "%s", strerror(ENOMEM));
		errno = ENOMEM;
		return NULL;
	}
	diff->orig_pol = orig_policy;
	diff->mod_pol = mod_policy;
	diff->orig_qpol = apol_policy_get_qpol(diff->orig_pol);
	diff->mod_qpol = apol_policy_get_qpol(diff->mod_pol);
	diff->fn = fn;
	diff->handle_arg = callback_arg;
	if ((diff->type_map = type_map_create()) == NULL) {
		ERR(diff, "%s", strerror(ENOMEM));
		poldiff_destroy(&diff);
		errno = ENOMEM;
		return NULL;
	}
	if (type_map_infer(diff) < 0) {
		error = errno;
		poldiff_destroy(&diff);
		errno = error;
		return NULL;
	}

	if ((diff->attrib_diffs = attrib_summary_create()) == NULL ||
	    (diff->avrule_diffs[AVRULE_OFFSET_ALLOW] = avrule_create()) == NULL ||
	    (diff->avrule_diffs[AVRULE_OFFSET_AUDITALLOW] = avrule_create()) == NULL ||
	    (diff->avrule_diffs[AVRULE_OFFSET_DONTAUDIT] = avrule_create()) == NULL ||
	    (diff->avrule_diffs[AVRULE_OFFSET_NEVERALLOW] = avrule_create()) == NULL ||
	    (diff->bool_diffs = bool_create()) == NULL ||
	    (diff->cat_diffs = cat_create()) == NULL ||
	    (diff->class_diffs = class_create()) == NULL ||
	    (diff->common_diffs = common_create()) == NULL ||
	    (diff->level_diffs = level_create()) == NULL ||
	    (diff->range_trans_diffs = range_trans_create()) == NULL ||
	    (diff->role_diffs = role_create()) == NULL ||
	    (diff->role_allow_diffs = role_allow_create()) == NULL ||
	    (diff->role_trans_diffs = role_trans_create()) == NULL ||
	    (diff->terule_diffs[TERULE_OFFSET_CHANGE] = terule_create()) == NULL ||
	    (diff->terule_diffs[TERULE_OFFSET_MEMBER] = terule_create()) == NULL ||
	    (diff->terule_diffs[TERULE_OFFSET_TRANS] = terule_create()) == NULL ||
	    (diff->type_diffs = type_summary_create()) == NULL || (diff->user_diffs = user_create()) == NULL) {
		ERR(diff, "%s", strerror(ENOMEM));
		poldiff_destroy(&diff);
		errno = ENOMEM;
		return NULL;
	}

	diff->policy_opts = QPOL_POLICY_OPTION_NO_RULES | QPOL_POLICY_OPTION_NO_NEVERALLOWS;
	return diff;
}