/*
* 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);
}
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;
}