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| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2017-05-12 18:59:32 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-13 20:52:11 +0300 |
| commit | 79d744974fdd3a70b7acc66fff0665fd8c7af9fa (patch) | |
| tree | 1e7810b94bad8c029419f219f89705311c89935a /fs/cifs | |
| parent | c73d2c037774a27a2e2e02fca949083dd627467e (diff) | |
| download | linux-79d744974fdd3a70b7acc66fff0665fd8c7af9fa.tar.xz | |
SMB2: Fix share type handling
[ Upstream commit cd1230070ae1c12fd34cf6a557bfa81bf9311009 ]
In fs/cifs/smb2pdu.h, we have:
#define SMB2_SHARE_TYPE_DISK 0x01
#define SMB2_SHARE_TYPE_PIPE 0x02
#define SMB2_SHARE_TYPE_PRINT 0x03
Knowing that, with the current code, the SMB2_SHARE_TYPE_PRINT case can
never trigger and printer share would be interpreted as disk share.
So, test the ShareType value for equality instead.
Fixes: faaf946a7d5b ("CIFS: Add tree connect/disconnect capability for SMB2")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/cifs')
| -rw-r--r-- | fs/cifs/smb2pdu.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index c147cc58056f..f0488ba39ac6 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -921,15 +921,19 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree, goto tcon_exit; } - if (rsp->ShareType & SMB2_SHARE_TYPE_DISK) + switch (rsp->ShareType) { + case SMB2_SHARE_TYPE_DISK: cifs_dbg(FYI, "connection to disk share\n"); - else if (rsp->ShareType & SMB2_SHARE_TYPE_PIPE) { + break; + case SMB2_SHARE_TYPE_PIPE: tcon->ipc = true; cifs_dbg(FYI, "connection to pipe share\n"); - } else if (rsp->ShareType & SMB2_SHARE_TYPE_PRINT) { - tcon->print = true; + break; + case SMB2_SHARE_TYPE_PRINT: + tcon->ipc = true; cifs_dbg(FYI, "connection to printer\n"); - } else { + break; + default: cifs_dbg(VFS, "unknown share type %d\n", rsp->ShareType); rc = -EOPNOTSUPP; goto tcon_error_exit; |