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authorJ. Bruce Fields <bfields@redhat.com>2012-10-09 18:35:22 -0400
committerJ. Bruce Fields <bfields@redhat.com>2012-10-09 18:35:22 -0400
commitf474af7051212b4efc8267583fad9c4ebf33ccff (patch)
tree1aa46ebc8065a341f247c2a2d9af2f624ad1d4f8 /fs/dlm/user.c
parent0d22f68f02c10d5d10ec5712917e5828b001a822 (diff)
parente3dd9a52cb5552c46c2a4ca7ccdfb4dab5c72457 (diff)
downloadblackbird-op-linux-f474af7051212b4efc8267583fad9c4ebf33ccff.tar.gz
blackbird-op-linux-f474af7051212b4efc8267583fad9c4ebf33ccff.zip
nfs: disintegrate UAPI for nfs
This is to complete part of the Userspace API (UAPI) disintegration for which the preparatory patches were pulled recently. After these patches, userspace headers will be segregated into: include/uapi/linux/.../foo.h for the userspace interface stuff, and: include/linux/.../foo.h for the strictly kernel internal stuff. Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/dlm/user.c')
-rw-r--r--fs/dlm/user.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/dlm/user.c b/fs/dlm/user.c
index eb4ed9ba3098..7ff49852b0cb 100644
--- a/fs/dlm/user.c
+++ b/fs/dlm/user.c
@@ -503,6 +503,13 @@ static ssize_t device_write(struct file *file, const char __user *buf,
#endif
return -EINVAL;
+#ifdef CONFIG_COMPAT
+ if (count > sizeof(struct dlm_write_request32) + DLM_RESNAME_MAXLEN)
+#else
+ if (count > sizeof(struct dlm_write_request) + DLM_RESNAME_MAXLEN)
+#endif
+ return -EINVAL;
+
kbuf = kzalloc(count + 1, GFP_NOFS);
if (!kbuf)
return -ENOMEM;
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