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authorIngo Molnar <mingo@elte.hu>2008-06-23 11:53:03 +0200
committerIngo Molnar <mingo@elte.hu>2008-06-23 11:53:03 +0200
commit009b9fc98ddd83f9139fdabb12c0d7a8535d5421 (patch)
treef7d3e182407d2ebe50a9b8db6361ac910027a1cf /net/9p/client.c
parent3711ccb07b7f0a13f4f1aa16a8fdca9c930f21ca (diff)
parent481c5346d0981940ee63037eb53e4e37b0735c10 (diff)
Merge branch 'linus' into x86/threadinfotip-x86-threadinfo-2008-06-23_09.53_Mon
Diffstat (limited to 'net/9p/client.c')
-rw-r--r--net/9p/client.c32
1 files changed, 24 insertions, 8 deletions
diff --git a/net/9p/client.c b/net/9p/client.c
index 84e087e24146..2ffe40cf2f01 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -64,21 +64,30 @@ static match_table_t tokens = {
* @options: options string passed from mount
* @v9ses: existing v9fs session information
*
+ * Return 0 upon success, -ERRNO upon failure
*/
-static void parse_opts(char *options, struct p9_client *clnt)
+static int parse_opts(char *opts, struct p9_client *clnt)
{
+ char *options;
char *p;
substring_t args[MAX_OPT_ARGS];
int option;
- int ret;
+ int ret = 0;
clnt->trans_mod = v9fs_default_trans();
clnt->dotu = 1;
clnt->msize = 8192;
- if (!options)
- return;
+ if (!opts)
+ return 0;
+
+ options = kstrdup(opts, GFP_KERNEL);
+ if (!options) {
+ P9_DPRINTK(P9_DEBUG_ERROR,
+ "failed to allocate copy of option string\n");
+ return -ENOMEM;
+ }
while ((p = strsep(&options, ",")) != NULL) {
int token;
@@ -86,10 +95,11 @@ static void parse_opts(char *options, struct p9_client *clnt)
continue;
token = match_token(p, tokens, args);
if (token < Opt_trans) {
- ret = match_int(&args[0], &option);
- if (ret < 0) {
+ int r = match_int(&args[0], &option);
+ if (r < 0) {
P9_DPRINTK(P9_DEBUG_ERROR,
"integer field, but no integer?\n");
+ ret = r;
continue;
}
}
@@ -107,6 +117,8 @@ static void parse_opts(char *options, struct p9_client *clnt)
continue;
}
}
+ kfree(options);
+ return ret;
}
@@ -138,16 +150,20 @@ struct p9_client *p9_client_create(const char *dev_name, char *options)
if (!clnt)
return ERR_PTR(-ENOMEM);
+ clnt->trans = NULL;
spin_lock_init(&clnt->lock);
INIT_LIST_HEAD(&clnt->fidlist);
clnt->fidpool = p9_idpool_create();
- if (!clnt->fidpool) {
+ if (IS_ERR(clnt->fidpool)) {
err = PTR_ERR(clnt->fidpool);
clnt->fidpool = NULL;
goto error;
}
- parse_opts(options, clnt);
+ err = parse_opts(options, clnt);
+ if (err < 0)
+ goto error;
+
if (clnt->trans_mod == NULL) {
err = -EPROTONOSUPPORT;
P9_DPRINTK(P9_DEBUG_ERROR,