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authorEric Van Hensbergen <ericvh@ericvh-laptop.(none)>2007-10-17 14:31:07 -0500
committerEric Van Hensbergen <ericvh@ericvh-desktop.austin.ibm.com>2007-10-17 14:31:07 -0500
commitfb0466c3ae7f1c73f70072af8fd27ac166908a2f (patch)
tree24af82c397d1f155bded80f3fcb49849da28bcc9 /net/9p/mod.c
parent50fd8010673b770f6489c9ee96680c204aefa84a (diff)
downloadop-kernel-dev-fb0466c3ae7f1c73f70072af8fd27ac166908a2f.zip
op-kernel-dev-fb0466c3ae7f1c73f70072af8fd27ac166908a2f.tar.gz
9p: fix bad kconfig cross-dependency
This patch moves transport dynamic registration and matching to the net module to prevent a bad Kconfig dependency between the net and fs 9p modules. Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Diffstat (limited to 'net/9p/mod.c')
-rw-r--r--net/9p/mod.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/net/9p/mod.c b/net/9p/mod.c
index 4f9e1d2..b8ac063 100644
--- a/net/9p/mod.c
+++ b/net/9p/mod.c
@@ -27,6 +27,10 @@
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <net/9p/9p.h>
+#include <linux/fs.h>
+#include <linux/parser.h>
+#include <net/9p/transport.h>
+#include <linux/list.h>
#ifdef CONFIG_NET_9P_DEBUG
unsigned int p9_debug_level = 0; /* feature-rific global debug level */
@@ -40,6 +44,64 @@ extern void p9_mux_global_exit(void);
extern int p9_sysctl_register(void);
extern void p9_sysctl_unregister(void);
+/*
+ * Dynamic Transport Registration Routines
+ *
+ */
+
+static LIST_HEAD(v9fs_trans_list);
+static struct p9_trans_module *v9fs_default_transport;
+
+/**
+ * v9fs_register_trans - register a new transport with 9p
+ * @m - structure describing the transport module and entry points
+ *
+ */
+void v9fs_register_trans(struct p9_trans_module *m)
+{
+ list_add_tail(&m->list, &v9fs_trans_list);
+ if (m->def)
+ v9fs_default_transport = m;
+}
+EXPORT_SYMBOL(v9fs_register_trans);
+
+/**
+ * v9fs_match_trans - match transport versus registered transports
+ * @arg: string identifying transport
+ *
+ */
+struct p9_trans_module *v9fs_match_trans(const substring_t *name)
+{
+ struct list_head *p;
+ struct p9_trans_module *t = NULL;
+
+ list_for_each(p, &v9fs_trans_list) {
+ t = list_entry(p, struct p9_trans_module, list);
+ if (strncmp(t->name, name->from, name->to-name->from) == 0)
+ break;
+ }
+ return t;
+}
+EXPORT_SYMBOL(v9fs_match_trans);
+
+/**
+ * v9fs_default_trans - returns pointer to default transport
+ *
+ */
+
+struct p9_trans_module *v9fs_default_trans(void)
+{
+ if (v9fs_default_transport)
+ return v9fs_default_transport;
+ else if (!list_empty(&v9fs_trans_list))
+ return list_first_entry(&v9fs_trans_list,
+ struct p9_trans_module, list);
+ else
+ return NULL;
+}
+EXPORT_SYMBOL(v9fs_default_trans);
+
+
/**
* v9fs_init - Initialize module
*
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