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-rw-r--r--fs/cifs/cifsacl.h66
1 files changed, 32 insertions, 34 deletions
diff --git a/fs/cifs/cifsacl.h b/fs/cifs/cifsacl.h
index 5c902c7ce52..4f388483526 100644
--- a/fs/cifs/cifsacl.h
+++ b/fs/cifs/cifsacl.h
@@ -23,11 +23,8 @@
#define _CIFSACL_H
-#define NUM_AUTHS 6 /* number of authority fields */
-#define NUM_SUBAUTHS 5 /* 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 NUM_AUTHS (6) /* number of authority fields */
+#define SID_MAX_SUB_AUTHORITIES (15) /* max number of sub authority fields */
#define READ_BIT 0x4
#define WRITE_BIT 0x2
@@ -41,12 +38,32 @@
#define SIDOWNER 1
#define SIDGROUP 2
-#define SIDLEN 150 /* S- 1 revision- 6 authorities- max 5 sub authorities */
-#define SID_ID_MAPPED 0
-#define SID_ID_PENDING 1
-#define SID_MAP_EXPIRE (3600 * HZ) /* map entry expires after one hour */
-#define SID_MAP_RETRY (300 * HZ) /* wait 5 minutes for next attempt to map */
+/*
+ * Security Descriptor length containing DACL with 3 ACEs (one each for
+ * owner, group and world).
+ */
+#define DEFAULT_SEC_DESC_LEN (sizeof(struct cifs_ntsd) + \
+ sizeof(struct cifs_acl) + \
+ (sizeof(struct cifs_ace) * 3))
+
+/*
+ * 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 + 15 for authority field + NULL terminator
+ *
+ * For authority field, max is when all 6 values are non-zero and it must be
+ * represented in hex. So "-0x" + 12 hex digits.
+ *
+ * Add 11 bytes for each subauthority field (10 bytes each + 1 for '-')
+ */
+#define SID_STRING_BASE_SIZE (2 + 3 + 15 + 1)
+#define SID_STRING_SUBAUTH_SIZE (11) /* size of a single subauth string */
struct cifs_ntsd {
__le16 revision; /* revision level */
@@ -60,10 +77,13 @@ struct cifs_ntsd {
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;
@@ -78,26 +98,4 @@ struct cifs_ace {
struct cifs_sid sid; /* ie UUID of user or group who gets these perms */
} __attribute__((packed));
-struct cifs_wksid {
- struct cifs_sid cifssid;
- char sidname[SIDNAMELENGTH];
-} __attribute__((packed));
-
-struct cifs_sid_id {
- unsigned int refcount; /* increment with spinlock, decrement without */
- unsigned long id;
- unsigned long time;
- unsigned long state;
- char *sidstr;
- struct rb_node rbnode;
- struct cifs_sid sid;
-};
-
-#ifdef __KERNEL__
-extern struct key_type cifs_idmap_key_type;
-extern const struct cred *root_cred;
-#endif /* KERNEL */
-
-extern int compare_sids(const struct cifs_sid *, const struct cifs_sid *);
-
#endif /* _CIFSACL_H */