diff options
Diffstat (limited to 'fs/cifs/cifs_spnego.c')
| -rw-r--r-- | fs/cifs/cifs_spnego.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c index 7013aaff6aed..117ef4bba68e 100644 --- a/fs/cifs/cifs_spnego.c +++ b/fs/cifs/cifs_spnego.c @@ -66,8 +66,8 @@ struct key_type cifs_spnego_key_type = { .describe = user_describe, }; -#define MAX_VER_STR_LEN 9 /* length of longest version string e.g. - strlen(";ver=0xFF") */ +#define MAX_VER_STR_LEN 8 /* length of longest version string e.g. + strlen("ver=0xFF") */ #define MAX_MECH_STR_LEN 13 /* length of longest security mechanism name, eg in future could have strlen(";sec=ntlmsspi") */ #define MAX_IPV6_ADDR_LEN 42 /* eg FEDC:BA98:7654:3210:FEDC:BA98:7654:3210/60 */ @@ -81,11 +81,15 @@ cifs_get_spnego_key(struct cifsSesInfo *sesInfo) struct key *spnego_key; const char *hostname = server->hostname; - /* BB: come up with better scheme for determining length */ - /* length of fields (with semicolons): ver=0xyz ipv4= ipaddress host= - hostname sec=mechanism uid=0x uid */ - desc_len = MAX_VER_STR_LEN + 5 + MAX_IPV6_ADDR_LEN + 1 + 6 + - strlen(hostname) + MAX_MECH_STR_LEN + 8 + (sizeof(uid_t) * 2); + /* length of fields (with semicolons): ver=0xyz ip4=ipaddress + host=hostname sec=mechanism uid=0xFF user=username */ + desc_len = MAX_VER_STR_LEN + + 6 /* len of "host=" */ + strlen(hostname) + + 5 /* len of ";ipv4=" */ + MAX_IPV6_ADDR_LEN + + MAX_MECH_STR_LEN + + 7 /* len of ";uid=0x" */ + (sizeof(uid_t) * 2) + + 6 /* len of ";user=" */ + strlen(sesInfo->userName) + 1; + spnego_key = ERR_PTR(-ENOMEM); description = kzalloc(desc_len, GFP_KERNEL); if (description == NULL) @@ -110,9 +114,11 @@ cifs_get_spnego_key(struct cifsSesInfo *sesInfo) dp = description + strlen(description); - /* for now, only sec=krb5 is valid */ + /* for now, only sec=krb5 and sec=mskrb5 are valid */ if (server->secType == Kerberos) sprintf(dp, ";sec=krb5"); + else if (server->secType == MSKerberos) + sprintf(dp, ";sec=mskrb5"); else goto out; |
