xnu-792.24.17.tar.gz

[apple/xnu.git] / bsd / sys / ucred.h

diff --git a/bsd/sys/ucred.h b/bsd/sys/ucred.h
index 0c503211677fec68a756323e142251ea1cb670f3..7da8c28ebd190be68abf9c702891bc9ea657139b 100644 (file)
--- a/bsd/sys/ucred.h
+++ b/bsd/sys/ucred.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
@@ -59,35 +59,59 @@
 #define        _SYS_UCRED_H_
 
 #include <sys/appleapiopts.h>
+#include <sys/cdefs.h>
 #include <sys/param.h>
+#include <bsm/audit.h>
 
 #ifdef __APPLE_API_UNSTABLE
+
 /*
- * Credentials.
+ * In-kernel credential structure.
+ *
+ * Note that this structure should not be used outside the kernel, nor should
+ * it or copies of it be exported outside.  
  */
 struct ucred {
+       TAILQ_ENTRY(ucred)      cr_link; /* never modify this without KAUTH_CRED_HASH_LOCK */
        u_long  cr_ref;                 /* reference count */
+       
+       /* credential hash depends on everything from this point on (see kauth_cred_get_hashkey) */
        uid_t   cr_uid;                 /* effective user id */
-       short   cr_ngroups;             /* number of groups */
-       gid_t   cr_groups[NGROUPS];     /* groups */
+       uid_t   cr_ruid;                /* real user id */
+       uid_t   cr_svuid;               /* saved user id */
+       short   cr_ngroups;             /* number of groups in advisory list */
+       gid_t   cr_groups[NGROUPS];     /* advisory group list */
+       gid_t   cr_rgid;                /* real group id */
+       gid_t   cr_svgid;               /* saved group id */
+       uid_t   cr_gmuid;               /* user id for group membership purposes */
+       struct auditinfo cr_au;         /* user auditing data */
 };
-#define cr_gid cr_groups[0]
-#define NOCRED ((struct ucred *)0)     /* no credential available */
-#define FSCRED ((struct ucred *)-1)    /* filesystem credential */
+typedef struct ucred *kauth_cred_t;
 
-#ifdef KERNEL
-#define        crhold(cr)                      \
-{                                      \
-       if (++(cr)->cr_ref == 0)        \
-               panic("crhold");        \
-}
+/*
+ * This is the external representation of struct ucred.
+ */
+struct xucred {
+        u_int   cr_version;             /* structure layout version */
+        uid_t   cr_uid;                 /* effective user id */
+        short   cr_ngroups;             /* number of advisory groups */
+        gid_t   cr_groups[NGROUPS];     /* advisory group list */
+};
+#define XUCRED_VERSION  0
 
-struct ucred   *crcopy __P((struct ucred *cr));
-struct ucred   *crdup __P((struct ucred *cr));
-void           crfree __P((struct ucred *cr));
-struct ucred   *crget __P((void));
-int            suser __P((struct ucred *cred, u_short *acflag));
+#define cr_gid cr_groups[0]
+#define NOCRED ((kauth_cred_t )0)      /* no credential available */
+#define FSCRED ((kauth_cred_t )-1)     /* filesystem credential */
 
+#ifdef KERNEL
+#ifdef __APPLE_API_OBSOLETE
+__BEGIN_DECLS
+int            crcmp(kauth_cred_t cr1, kauth_cred_t cr2);
+int            suser(kauth_cred_t cred, u_short *acflag);
+int            set_security_token(struct proc * p);
+void           cru2x(kauth_cred_t cr, struct xucred *xcr);
+__END_DECLS
+#endif /* __APPLE_API_OBSOLETE */
 #endif /* KERNEL */
 #endif /* __APPLE_API_UNSTABLE */