#define NUM_AUTHS 6 /* number of authority fields */
-#define NUM_SUBAUTHS 5 /* number of sub authority fields */
+#define SID_MAX_SUB_AUTHORITIES (15) /* max number of sub authority fields */
#define NUM_WK_SIDS 7 /* number of well known sids */
#define SIDNAMELENGTH 20 /* long enough for the ones we care about */
#define DEFSECDESCLEN 192 /* sec desc len contaiting a dacl with three aces */
#define SIDOWNER 1
#define SIDGROUP 2
-#define SIDLEN 150 /* S- 1 revision- 6 authorities- max 5 sub authorities */
+
+/*
+ * Maximum size of a string representation of a SID:
+ *
+ * The fields are unsigned values in decimal. So:
+ *
+ * u8: max 3 bytes in decimal
+ * u32: max 10 bytes in decimal
+ *
+ * "S-" + 3 bytes for version field + 4 bytes for each authority field (3 bytes
+ * per number + 1 for '-') + 11 bytes for each subauthority field (10 bytes
+ * per number + 1 for '-') + NULL terminator.
+ */
+#define SID_STRING_MAX (195)
#define SID_ID_MAPPED 0
#define SID_ID_PENDING 1
struct cifs_sid {
__u8 revision; /* revision level */
__u8 num_subauth;
- __u8 authority[6];
- __le32 sub_auth[5]; /* sub_auth[num_subauth] */
+ __u8 authority[NUM_AUTHS];
+ __le32 sub_auth[SID_MAX_SUB_AUTHORITIES]; /* sub_auth[num_subauth] */
} __attribute__((packed));
+/* size of a struct cifs_sid, sans sub_auth array */
+#define CIFS_SID_BASE_SIZE (1 + 1 + NUM_AUTHS)
+
struct cifs_acl {
__le16 revision; /* revision level */
__le16 size;
extern const struct cred *root_cred;
#endif /* KERNEL */
-extern int compare_sids(const struct cifs_sid *, const struct cifs_sid *);
-
#endif /* _CIFSACL_H */