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Diffstat (limited to 'fs/9p/v9fs.c')
-rw-r--r--fs/9p/v9fs.c19
1 files changed, 14 insertions, 5 deletions
diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index 519b21d8b15b..5250c428fc1f 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -269,6 +269,7 @@ v9fs_session_init(struct v9fs_session_info *v9ses,
int n = 0;
int newfid = -1;
int retval = -EINVAL;
+ struct v9fs_str *version;
v9ses->name = __getname();
if (!v9ses->name)
@@ -351,13 +352,16 @@ v9fs_session_init(struct v9fs_session_info *v9ses,
goto FreeFcall;
}
- /* Really should check for 9P1 and report error */
- if (!v9fs_str_compare("9P2000.u", &fcall->params.rversion.version)) {
+ version = &fcall->params.rversion.version;
+ if (version->len==8 && !memcmp(version->str, "9P2000.u", 8)) {
dprintk(DEBUG_9P, "9P2000 UNIX extensions enabled\n");
v9ses->extended = 1;
- } else {
+ } else if (version->len==6 && !memcmp(version->str, "9P2000", 6)) {
dprintk(DEBUG_9P, "9P2000 legacy mode enabled\n");
v9ses->extended = 0;
+ } else {
+ retval = -EREMOTEIO;
+ goto FreeFcall;
}
n = fcall->params.rversion.msize;
@@ -449,12 +453,17 @@ extern int v9fs_error_init(void);
static int __init init_v9fs(void)
{
+ int ret;
+
v9fs_error_init();
printk(KERN_INFO "Installing v9fs 9P2000 file system support\n");
- v9fs_mux_global_init();
- return register_filesystem(&v9fs_fs_type);
+ ret = v9fs_mux_global_init();
+ if (!ret)
+ ret = register_filesystem(&v9fs_fs_type);
+
+ return ret;
}
/**
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