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keys: Pass the network namespace into request_key mechanism

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Create a request_key_net() function and use it to pass the network
namespace domain tag into DNS revolver keys and rxrpc/AFS keys so that keys
for different domains can coexist in the same keyring.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: netdev@vger.kernel.org
cc: linux-nfs@vger.kernel.org
cc: linux-cifs@vger.kernel.org
cc: linux-afs@lists.infradead.org
This commit is contained in:
David Howells
2019-06-26 21:02:33 +01:00
parent 9b24261051
commit a58946c158
16 changed files with 145 additions and 49 deletions
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8
fs/afs/dynroot.c
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@@ -28,6 +28,7 @@ const struct file_operations afs_dynroot_file_operations = {
static int afs_probe_cell_name(struct dentry *dentry)
{
struct afs_cell *cell;
struct afs_net *net = afs_d2net(dentry);
const char *name = dentry->d_name.name;
size_t len = dentry->d_name.len;
int ret;
@@ -40,13 +41,14 @@ static int afs_probe_cell_name(struct dentry *dentry)
len--;
}
cell = afs_lookup_cell_rcu(afs_d2net(dentry), name, len);
cell = afs_lookup_cell_rcu(net, name, len);
if (!IS_ERR(cell)) {
afs_put_cell(afs_d2net(dentry), cell);
afs_put_cell(net, cell);
return 0;
}
ret = dns_query("afsdb", name, len, "srv=1", NULL, NULL, false);
ret = dns_query(net->net, "afsdb", name, len, "srv=1",
NULL, NULL, false);
if (ret == -ENODATA)
ret = -EDESTADDRREQ;
return ret;