evin/ms-nfs41-client
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ref counting for nfs41_root

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very similar to the issue with nfs41_open_state, an abandoned upcall could outlive its mount. to prevent their nfs41_root from being freed, upcalls need to hold a reference until they're finished. this also keeps all of its clients/sessions/rpc connections alive

Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
This commit is contained in:
Casey Bodley 2010-10-27 13:36:22 -04:00 • committed by unknown
parent 006bdfa47a
commit bcc707d3b8
13 changed files with 57 additions and 4 deletions
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22
daemon/namespace.c
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@ -57,6 +57,7 @@ int nfs41_root_create(
root->wsize = wsize;
root->rsize = rsize;
InitializeCriticalSection(&root->lock);
root->ref_count = 1;
/* generate a unique client_owner */
status = nfs41_client_owner(name, &root->client_owner);
@ -71,7 +72,7 @@ out:
return status;
}
void nfs41_root_free(
static void root_free(
IN nfs41_root *root)
{
struct list_entry *entry, *tmp;
@ -86,6 +87,25 @@ void nfs41_root_free(
dprintf(NSLVL, "<-- nfs41_root_free()\n");
}
void nfs41_root_ref(
IN nfs41_root *root)
{
const LONG count = InterlockedIncrement(&root->ref_count);
dprintf(2, "nfs41_root_ref() count %d\n", count);
}
void nfs41_root_deref(
IN nfs41_root *root)
{
const LONG count = InterlockedDecrement(&root->ref_count);
dprintf(2, "nfs41_root_deref() count %d\n", count);
if (count == 0)
root_free(root);
}
/* root_client_find_addrs() */
struct cl_addr_info {
const multi_addr4 *addrs;