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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2020, Microsoft Corporation.
*
* Author(s): Steve French <stfrench@microsoft.com>
* David Howells <dhowells@redhat.com>
*/
#include "cifsglob.h"
#include "cifs_debug.h"
#include "fs_context.h"
static const match_table_t cifs_secflavor_tokens = {
{ Opt_sec_krb5, "krb5" },
{ Opt_sec_krb5i, "krb5i" },
{ Opt_sec_krb5p, "krb5p" },
{ Opt_sec_ntlmsspi, "ntlmsspi" },
{ Opt_sec_ntlmssp, "ntlmssp" },
{ Opt_ntlm, "ntlm" },
{ Opt_sec_ntlmi, "ntlmi" },
{ Opt_sec_ntlmv2, "nontlm" },
{ Opt_sec_ntlmv2, "ntlmv2" },
{ Opt_sec_ntlmv2i, "ntlmv2i" },
{ Opt_sec_lanman, "lanman" },
{ Opt_sec_none, "none" },
{ Opt_sec_err, NULL }
};
int cifs_parse_security_flavors(char *value, struct smb_vol *vol)
{
substring_t args[MAX_OPT_ARGS];
/*
* With mount options, the last one should win. Reset any existing
* settings back to default.
*/
vol->sectype = Unspecified;
vol->sign = false;
switch (match_token(value, cifs_secflavor_tokens, args)) {
case Opt_sec_krb5p:
cifs_dbg(VFS, "sec=krb5p is not supported!\n");
return 1;
case Opt_sec_krb5i:
vol->sign = true;
fallthrough;
case Opt_sec_krb5:
vol->sectype = Kerberos;
break;
case Opt_sec_ntlmsspi:
vol->sign = true;
fallthrough;
case Opt_sec_ntlmssp:
vol->sectype = RawNTLMSSP;
break;
case Opt_sec_ntlmi:
vol->sign = true;
fallthrough;
case Opt_ntlm:
vol->sectype = NTLM;
break;
case Opt_sec_ntlmv2i:
vol->sign = true;
fallthrough;
case Opt_sec_ntlmv2:
vol->sectype = NTLMv2;
break;
#ifdef CONFIG_CIFS_WEAK_PW_HASH
case Opt_sec_lanman:
vol->sectype = LANMAN;
break;
#endif
case Opt_sec_none:
vol->nullauth = 1;
break;
default:
cifs_dbg(VFS, "bad security option: %s\n", value);
return 1;
}
return 0;
}
static const match_table_t cifs_cacheflavor_tokens = {
{ Opt_cache_loose, "loose" },
{ Opt_cache_strict, "strict" },
{ Opt_cache_none, "none" },
{ Opt_cache_ro, "ro" },
{ Opt_cache_rw, "singleclient" },
{ Opt_cache_err, NULL }
};
int
cifs_parse_cache_flavor(char *value, struct smb_vol *vol)
{
substring_t args[MAX_OPT_ARGS];
switch (match_token(value, cifs_cacheflavor_tokens, args)) {
case Opt_cache_loose:
vol->direct_io = false;
vol->strict_io = false;
vol->cache_ro = false;
vol->cache_rw = false;
break;
case Opt_cache_strict:
vol->direct_io = false;
vol->strict_io = true;
vol->cache_ro = false;
vol->cache_rw = false;
break;
case Opt_cache_none:
vol->direct_io = true;
vol->strict_io = false;
vol->cache_ro = false;
vol->cache_rw = false;
break;
case Opt_cache_ro:
vol->direct_io = false;
vol->strict_io = false;
vol->cache_ro = true;
vol->cache_rw = false;
break;
case Opt_cache_rw:
vol->direct_io = false;
vol->strict_io = false;
vol->cache_ro = false;
vol->cache_rw = true;
break;
default:
cifs_dbg(VFS, "bad cache= option: %s\n", value);
return 1;
}
return 0;
}
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