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authorDan Carpenter <error27@gmail.com>2010-07-10 16:33:36 +0200
committerJoel Becker <joel.becker@oracle.com>2010-07-12 13:57:53 -0700
commite372357ba55ae89307af15cd680467d8f0db4f01 (patch)
treead5220668336431e815d0a933ffc9faed6a4a408 /fs
parent121a39bb00b421211f4f590c440a8f636d3ae807 (diff)
ocfs2: tighten up strlen() checking
This function is only called from one place and it's like this: dlm_register_domain(conn->cc_name, dlm_key, &fs_version); The "conn->cc_name" is 64 characters long. If strlen(conn->cc_name) were equal to O2NM_MAX_NAME_LEN (64) that would be a bug because strlen() doesn't count the NULL character. In fact, if you look how O2NM_MAX_NAME_LEN is used, it mostly describes 64 character buffers. The only exception is nd_name from struct o2nm_node. Anyway I looked into it and in this case the domain string comes from osb->uuid_str in ocfs2_setup_osb_uuid(). That's 32 characters and NULL which easily fits into O2NM_MAX_NAME_LEN. This patch doesn't change how the code works, but I think it makes the code a little cleaner. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/ocfs2/dlm/dlmdomain.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c
index 2ccad86fb590..153abb5abef0 100644
--- a/fs/ocfs2/dlm/dlmdomain.c
+++ b/fs/ocfs2/dlm/dlmdomain.c
@@ -1671,7 +1671,7 @@ struct dlm_ctxt * dlm_register_domain(const char *domain,
struct dlm_ctxt *dlm = NULL;
struct dlm_ctxt *new_ctxt = NULL;
- if (strlen(domain) > O2NM_MAX_NAME_LEN) {
+ if (strlen(domain) >= O2NM_MAX_NAME_LEN) {
ret = -ENAMETOOLONG;
mlog(ML_ERROR, "domain name length too long\n");
goto leave;

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