diff options
| author | Otavio Salvador <otavio@ossystems.com.br> | 2019-03-28 10:47:24 -0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-03-28 10:47:24 -0300 |
| commit | 0a8ab17689e628c84a666195bfc6ab85d11cf057 (patch) | |
| tree | 01630dc4a6935df99bf7d11d34ff8d384fed86e2 /net/9p/client.c | |
| parent | 1e71d8c630cbc0d1f5d762fd019690b5cdb880ae (diff) | |
| parent | 32aca03c2ce868d3412da0bb6ce6798c7bea357e (diff) | |
Merge pull request #46 from toradex/4.9-2.3.x-imx
4.9 2.3.x imx
Diffstat (limited to 'net/9p/client.c')
| -rw-r--r-- | net/9p/client.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/net/9p/client.c b/net/9p/client.c index 98d299ea52ee..f1517ca8aba3 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -156,6 +156,12 @@ static int parse_opts(char *opts, struct p9_client *clnt) ret = r; continue; } + if (option < 4096) { + p9_debug(P9_DEBUG_ERROR, + "msize should be at least 4k\n"); + ret = -EINVAL; + continue; + } clnt->msize = option; break; case Opt_trans: @@ -972,10 +978,18 @@ static int p9_client_version(struct p9_client *c) else if (!strncmp(version, "9P2000", 6)) c->proto_version = p9_proto_legacy; else { + p9_debug(P9_DEBUG_ERROR, + "server returned an unknown version: %s\n", version); err = -EREMOTEIO; goto error; } + if (msize < 4096) { + p9_debug(P9_DEBUG_ERROR, + "server returned a msize < 4096: %d\n", msize); + err = -EREMOTEIO; + goto error; + } if (msize < c->msize) c->msize = msize; @@ -1040,6 +1054,13 @@ struct p9_client *p9_client_create(const char *dev_name, char *options) if (clnt->msize > clnt->trans_mod->maxsize) clnt->msize = clnt->trans_mod->maxsize; + if (clnt->msize < 4096) { + p9_debug(P9_DEBUG_ERROR, + "Please specify a msize of at least 4k\n"); + err = -EINVAL; + goto close_trans; + } + err = p9_client_version(clnt); if (err) goto close_trans; |