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authorPrem Karat <prem.karat@linux.vnet.ibm.com>2011-05-06 17:05:32 +0400
committerEric Van Hensbergen <ericvh@gmail.com>2011-07-23 18:32:49 +0400
commit4d63055fa9657aa402da25575045c23f37c3da05 (patch)
tree6d85570570026eed3cbb50a1ab835bbe686e326b
parenta2dd43bb0d7b9ce28f8a39254c25840c0730498e (diff)
downloadlinux-4d63055fa9657aa402da25575045c23f37c3da05.tar.xz
fs/9p: Clean-up get_protocol_version() to use strcmp
Signed-off-by: Prem Karat <prem.karat@linux.vnet.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
-rw-r--r--include/net/9p/client.h6
-rw-r--r--include/net/9p/transport.h2
-rw-r--r--net/9p/client.c47
-rw-r--r--net/9p/mod.c4
4 files changed, 39 insertions, 20 deletions
diff --git a/include/net/9p/client.h b/include/net/9p/client.h
index d26d5e98a173..f7a8d036f803 100644
--- a/include/net/9p/client.h
+++ b/include/net/9p/client.h
@@ -36,9 +36,9 @@
*/
enum p9_proto_versions{
- p9_proto_legacy = 0,
- p9_proto_2000u = 1,
- p9_proto_2000L = 2,
+ p9_proto_legacy,
+ p9_proto_2000u,
+ p9_proto_2000L,
};
diff --git a/include/net/9p/transport.h b/include/net/9p/transport.h
index d8549fb9c742..83531ebeee99 100644
--- a/include/net/9p/transport.h
+++ b/include/net/9p/transport.h
@@ -67,7 +67,7 @@ struct p9_trans_module {
void v9fs_register_trans(struct p9_trans_module *m);
void v9fs_unregister_trans(struct p9_trans_module *m);
-struct p9_trans_module *v9fs_get_trans_by_name(const substring_t *name);
+struct p9_trans_module *v9fs_get_trans_by_name(char *s);
struct p9_trans_module *v9fs_get_default_trans(void);
void v9fs_put_trans(struct p9_trans_module *m);
#endif /* NET_9P_TRANSPORT_H */
diff --git a/net/9p/client.c b/net/9p/client.c
index 7dd4e78878d6..431eaef697c7 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -72,23 +72,22 @@ inline int p9_is_proto_dotu(struct p9_client *clnt)
EXPORT_SYMBOL(p9_is_proto_dotu);
/* Interpret mount option for protocol version */
-static int get_protocol_version(const substring_t *name)
+static int get_protocol_version(char *s)
{
int version = -EINVAL;
- if (!strncmp("9p2000", name->from, name->to-name->from)) {
+ if (!strcmp(s, "9p2000")) {
version = p9_proto_legacy;
P9_DPRINTK(P9_DEBUG_9P, "Protocol version: Legacy\n");
- } else if (!strncmp("9p2000.u", name->from, name->to-name->from)) {
+ } else if (!strcmp(s, "9p2000.u")) {
version = p9_proto_2000u;
P9_DPRINTK(P9_DEBUG_9P, "Protocol version: 9P2000.u\n");
- } else if (!strncmp("9p2000.L", name->from, name->to-name->from)) {
+ } else if (!strcmp(s, "9p2000.L")) {
version = p9_proto_2000L;
P9_DPRINTK(P9_DEBUG_9P, "Protocol version: 9P2000.L\n");
- } else {
- P9_DPRINTK(P9_DEBUG_ERROR, "Unknown protocol version %s. ",
- name->from);
- }
+ } else
+ printk(KERN_INFO "9p: Unknown protocol version %s.\n", s);
+
return version;
}
@@ -106,6 +105,7 @@ static int parse_opts(char *opts, struct p9_client *clnt)
char *p;
substring_t args[MAX_OPT_ARGS];
int option;
+ char *s;
int ret = 0;
clnt->proto_version = p9_proto_2000u;
@@ -141,22 +141,41 @@ static int parse_opts(char *opts, struct p9_client *clnt)
clnt->msize = option;
break;
case Opt_trans:
- clnt->trans_mod = v9fs_get_trans_by_name(&args[0]);
- if(clnt->trans_mod == NULL) {
+ s = match_strdup(&args[0]);
+ if (!s) {
+ ret = -ENOMEM;
P9_DPRINTK(P9_DEBUG_ERROR,
- "Could not find request transport: %s\n",
- (char *) &args[0]);
+ "problem allocating copy of trans arg\n");
+ goto free_and_return;
+ }
+ clnt->trans_mod = v9fs_get_trans_by_name(s);
+ if (clnt->trans_mod == NULL) {
+ printk(KERN_INFO
+ "9p: Could not find "
+ "request transport: %s\n", s);
ret = -EINVAL;
+ kfree(s);
goto free_and_return;
}
+ kfree(s);
break;
case Opt_legacy:
clnt->proto_version = p9_proto_legacy;
break;
case Opt_version:
- ret = get_protocol_version(&args[0]);
- if (ret == -EINVAL)
+ s = match_strdup(&args[0]);
+ if (!s) {
+ ret = -ENOMEM;
+ P9_DPRINTK(P9_DEBUG_ERROR,
+ "problem allocating copy of version arg\n");
+ goto free_and_return;
+ }
+ ret = get_protocol_version(s);
+ if (ret == -EINVAL) {
+ kfree(s);
goto free_and_return;
+ }
+ kfree(s);
clnt->proto_version = ret;
break;
default:
diff --git a/net/9p/mod.c b/net/9p/mod.c
index 72c398275051..2664d1292291 100644
--- a/net/9p/mod.c
+++ b/net/9p/mod.c
@@ -80,14 +80,14 @@ EXPORT_SYMBOL(v9fs_unregister_trans);
* @name: string identifying transport
*
*/
-struct p9_trans_module *v9fs_get_trans_by_name(const substring_t *name)
+struct p9_trans_module *v9fs_get_trans_by_name(char *s)
{
struct p9_trans_module *t, *found = NULL;
spin_lock(&v9fs_trans_lock);
list_for_each_entry(t, &v9fs_trans_list, list)
- if (strncmp(t->name, name->from, name->to-name->from) == 0 &&
+ if (strcmp(t->name, s) == 0 &&
try_module_get(t->owner)) {
found = t;
break;