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authorSteve French <smfrench@gmail.com>2016-09-22 00:39:34 -0500
committerSteve French <smfrench@gmail.com>2016-10-12 12:08:32 -0500
commitfa70b87cc6641978b20e12cc5d517e9ffc0086d4 (patch)
treec5ef0b1540ee5c4ed891ff2ecc0d95aa216039f7 /fs/cifs
parentc2afb8147e69819885493edf3a7c1ce03aaf2d4e (diff)
downloadlinux-fa70b87cc6641978b20e12cc5d517e9ffc0086d4.tar.bz2
SMB3: GUIDs should be constructed as random but valid uuids
GUIDs although random, and 16 bytes, need to be generated as proper uuids. Signed-off-by: Steve French <steve.french@primarydata.com> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Reported-by: David Goebels <davidgoe@microsoft.com> CC: Stable <stable@vger.kernel.org>
Diffstat (limited to 'fs/cifs')
-rw-r--r--fs/cifs/cifsfs.c2
-rw-r--r--fs/cifs/connect.c2
-rw-r--r--fs/cifs/smb2ops.c2
-rw-r--r--fs/cifs/smb2pdu.c2
4 files changed, 4 insertions, 4 deletions
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index cca04e710421..978dbf049a77 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -271,7 +271,7 @@ cifs_alloc_inode(struct super_block *sb)
cifs_inode->createtime = 0;
cifs_inode->epoch = 0;
#ifdef CONFIG_CIFS_SMB2
- get_random_bytes(cifs_inode->lease_key, SMB2_LEASE_KEY_SIZE);
+ generate_random_uuid(cifs_inode->lease_key);
#endif
/*
* Can not set i_flags here - they get immediately overwritten to zero
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 2e4f4bad8b1e..c841244a954d 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -2163,7 +2163,7 @@ cifs_get_tcp_session(struct smb_vol *volume_info)
memcpy(&tcp_ses->dstaddr, &volume_info->dstaddr,
sizeof(tcp_ses->dstaddr));
#ifdef CONFIG_CIFS_SMB2
- get_random_bytes(tcp_ses->client_guid, SMB2_CLIENT_GUID_SIZE);
+ generate_random_uuid(tcp_ses->client_guid);
#endif
/*
* at this point we are the only ones with the pointer
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index d203c0329626..5ed591d7fff3 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -1041,7 +1041,7 @@ smb2_set_lease_key(struct inode *inode, struct cifs_fid *fid)
static void
smb2_new_lease_key(struct cifs_fid *fid)
{
- get_random_bytes(fid->lease_key, SMB2_LEASE_KEY_SIZE);
+ generate_random_uuid(fid->lease_key);
}
#define SMB2_SYMLINK_STRUCT_SIZE \
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index e8638432a233..3eec96ca87d9 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -1183,7 +1183,7 @@ create_durable_v2_buf(struct cifs_fid *pfid)
buf->dcontext.Timeout = 0; /* Should this be configurable by workload */
buf->dcontext.Flags = cpu_to_le32(SMB2_DHANDLE_FLAG_PERSISTENT);
- get_random_bytes(buf->dcontext.CreateGuid, 16);
+ generate_random_uuid(buf->dcontext.CreateGuid);
memcpy(pfid->create_guid, buf->dcontext.CreateGuid, 16);
/* SMB2_CREATE_DURABLE_HANDLE_REQUEST is "DH2Q" */