bool is_invade(int h1, int m1, int h2, int m2, int h, int m) //判断改时间点是否被这件事占用
{
if (is_later(h1, m1, h, m) && is_former(h2, m2, h, m))
return true;
else
return false;
}
static int fscd_lookup(struct workspace_object_struct *object, struct userpolicy_struct *userpolicy, struct entry_struct *entry, char *path, struct fuse_entry_param *e)
{
int nreturn=-ENOENT;
struct resource_struct *resource=object->resource;
if (entry->inode) {
struct entry_mountdata_struct *fscd_mountdata=NULL;
logoutput("fscd_lookup: revalidate %s", entry->name);
/* it's a revalidate */
copy_stat(&e->attr, &entry->inode->st);
e->attr_timeout=3600;
e->entry_timeout=3600;
nreturn=0;
/* lookup fscd_mountdata to watch the mount command */
fscd_mountdata=lookup_entry_mountdata(entry);
if (! fscd_mountdata) {
int res;
/* no previous mount pending/mounted/failed */
fscd_mountdata=create_entry_mountdata(entry);
if (fscd_mountdata) {
fscd_mountdata->entry=entry;
fscd_mountdata->workspace_mount=object->workspace_mount;
fscd_mountdata->mountstatus=OBJECT_MOUNTSTATUS_UNMOUNTED;
get_current_time(&fscd_mountdata->mounttime);
} else {
nreturn=-ENOMEM;
}
}
if (fscd_mountdata) {
/* only remount if at least some time ago */
if (fscd_mountdata->mountstatus==OBJECT_MOUNTSTATUS_FAILED) {
struct timespec rightnow;
get_current_time(&rightnow);
if (is_later(&rightnow, &fscd_mountdata->mounttime, cdrom_options.fscd_remount_timeout_onerror, 0)==1) {
/* remount */
fscd_mountdata->mountstatus=OBJECT_MOUNTSTATUS_UNMOUNTED;
fscd_mountdata->mounttime.tv_sec=rightnow.tv_sec;
fscd_mountdata->mounttime.tv_nsec=rightnow.tv_nsec;
}
}
if (fscd_mountdata->mountstatus==OBJECT_MOUNTSTATUS_PENDING) {
wait_for_mount(fscd_mountdata, cdrom_options.fscd_mount_timeout);
}
if (fscd_mountdata->mountstatus==OBJECT_MOUNTSTATUS_UNMOUNTED) {
/* only mount when it's not mounted */
send_internal_message(INTERNALMESSAGE_TYPE_MOUNTOBJECT, (void *) object);
}
}
}
return nreturn;
}
