pfs_resolve_t pfs_resolve( const char *logical_name, char *physical_name, time_t stoptime )
{
pfs_resolve_t result = PFS_RESOLVE_UNCHANGED;
struct mount_entry *e;
const char *t;
if(!resolve_cache) resolve_cache = hash_table_create(0,0);
t = hash_table_lookup(resolve_cache,logical_name);
if(t) {
strcpy(physical_name,t);
result = PFS_RESOLVE_CHANGED;
} else {
for(e=mount_list;e;e=e->next) {
result = mount_entry_check(logical_name,e->prefix,e->redirect,physical_name);
if(result!=PFS_RESOLVE_UNCHANGED) break;
}
}
switch(result) {
case PFS_RESOLVE_UNCHANGED:
strcpy(physical_name,logical_name);
break;
case PFS_RESOLVE_CHANGED:
clean_up_path(physical_name);
break;
case PFS_RESOLVE_FAILED:
debug(D_RESOLVE,"%s failed",logical_name);
break;
case PFS_RESOLVE_ENOENT:
debug(D_RESOLVE,"%s ENOENT",logical_name);
break;
case PFS_RESOLVE_DENIED:
debug(D_RESOLVE,"%s denied",logical_name);
break;
}
if(result==PFS_RESOLVE_UNCHANGED || result==PFS_RESOLVE_CHANGED) {
debug(D_RESOLVE,"%s = %s",logical_name,physical_name);
if(!hash_table_lookup(resolve_cache,logical_name)) {
hash_table_insert(resolve_cache,logical_name,xxstrdup(physical_name));
}
}
return result;
}
static pfs_resolve_t pfs_resolve_ns( struct pfs_mount_entry *ns, const char *logical_name, char *physical_name, mode_t mode, time_t stoptime )
{
assert(ns);
assert(physical_name);
assert(physical_name);
pfs_resolve_t result = PFS_RESOLVE_UNCHANGED;
const char *t;
char lookup_key[PFS_PATH_MAX + 3 * sizeof(int) + 1];
sprintf(lookup_key, "%o|%p|%s", mode, ns, logical_name);
if(!resolve_cache) resolve_cache = hash_table_create(0,0);
t = (const char *) hash_table_lookup(resolve_cache,lookup_key);
if(t) {
strcpy(physical_name,t);
result = PFS_RESOLVE_CHANGED;
} else {
while (ns) {
assert(!(ns->next && ns->parent));
assert(ns->refcount > 0);
if (ns->parent) {
ns = ns->parent;
continue;
}
if (*ns->prefix == '\x00' || *ns->redirect == '\x00') {
// we hit the end of the mountlist
break;
}
result = mount_entry_check(logical_name,ns->prefix,ns->redirect,physical_name);
if(result!=PFS_RESOLVE_UNCHANGED) {
if ((mode & ns->mode) != mode) {
result = PFS_RESOLVE_DENIED;
debug(D_RESOLVE,"%s denied, requesting mode %o on mount entry with %o",logical_name,mode,ns->mode);
}
break;
}
ns = ns->next;
}
}
switch(result) {
case PFS_RESOLVE_UNCHANGED:
strcpy(physical_name,logical_name);
break;
case PFS_RESOLVE_CHANGED:
clean_up_path(physical_name);
break;
case PFS_RESOLVE_FAILED:
debug(D_RESOLVE,"%s failed",logical_name);
break;
case PFS_RESOLVE_ENOENT:
debug(D_RESOLVE,"%s ENOENT",logical_name);
break;
case PFS_RESOLVE_DENIED:
debug(D_RESOLVE,"%s denied",logical_name);
break;
}
if(result==PFS_RESOLVE_UNCHANGED || result==PFS_RESOLVE_CHANGED) {
debug(D_RESOLVE,"%s = %s,%o",logical_name,physical_name,mode);
if(!hash_table_lookup(resolve_cache,lookup_key)) {
hash_table_insert(resolve_cache,lookup_key,xxstrdup(physical_name));
}
}
return result;
}
