+/*****************************************************************************\
+ * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
+ * Copyright (C) 2007 The Regents of the University of California.
+ * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
+ * Written by Brian Behlendorf <behlendorf1@llnl.gov>.
+ * UCRL-CODE-235197
+ *
+ * This file is part of the SPL, Solaris Porting Layer.
+ * For details, see <http://zfsonlinux.org/>.
+ *
+ * The SPL is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * The SPL is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with the SPL. If not, see <http://www.gnu.org/licenses/>.
+\*****************************************************************************/
+
#ifndef _SPL_CRED_H
#define _SPL_CRED_H
-#ifdef __cplusplus
-extern "C" {
-#endif
-
#include <linux/module.h>
#include <sys/types.h>
#include <sys/vfs.h>
-/* XXX - Portions commented out because we really just want to have the type
- * defined and the contents aren't nearly so important at the moment. */
-typedef struct cred {
- uint_t cr_ref; /* reference count */
- uid_t cr_uid; /* effective user id */
- gid_t cr_gid; /* effective group id */
- uid_t cr_ruid; /* real user id */
- gid_t cr_rgid; /* real group id */
- uid_t cr_suid; /* "saved" user id (from exec) */
- gid_t cr_sgid; /* "saved" group id (from exec) */
- uint_t cr_ngroups; /* number of groups returned by */
- /* crgroups() */
-#if 0
- cred_priv_t cr_priv; /* privileges */
- projid_t cr_projid; /* project */
- struct zone *cr_zone; /* pointer to per-zone structure */
- struct ts_label_s *cr_label; /* pointer to the effective label */
- credsid_t *cr_ksid; /* pointer to SIDs */
-#endif
- gid_t cr_groups[1]; /* cr_groups size not fixed */
- /* audit info is defined dynamically */
- /* and valid only when audit enabled */
- /* auditinfo_addr_t cr_auinfo; audit info */
-} cred_t;
-
-#define kcred NULL
-#define CRED() NULL
-
-static __inline__ uid_t
-crgetuid(cred_t *cr)
-{
- return 0;
-}
-
-static __inline__ gid_t
-crgetgid(cred_t *cr)
-{
- return 0;
-}
-
-static __inline__ int
-crgetngroups(cred_t *cr)
-{
- return 0;
-}
-
-static __inline__ gid_t *
-crgetgroups(cred_t *cr)
-{
- return NULL;
-}
-
-static __inline__ int
-groupmember(gid_t gid, const cred_t *cr)
-{
- /* Primary group check */
- if ((cr) && (gid == cr->cr_gid))
- return 1;
-
- /* Supplemental group check (unsupported) */
- return 0;
-}
-
-
-#ifdef __cplusplus
-}
-#endif
+#ifdef HAVE_CRED_STRUCT
+
+typedef struct cred cred_t;
+
+#define kcred ((cred_t *)(init_task.cred))
+#define CRED() ((cred_t *)current_cred())
+
+#else
+
+typedef struct task_struct cred_t;
+
+#define kcred ((cred_t *)&init_task)
+#define CRED() ((cred_t *)current)
+
+#endif /* HAVE_CRED_STRUCT */
+
+#ifdef HAVE_KUIDGID_T
+
+ /*
+ * Linux 3.8+ uses typedefs to redefine uid_t and gid_t. We have to rename the
+ * typedefs to recover the original types. We then can use them provided that
+ * we are careful about translating from k{g,u}id_t to the original versions
+ * and vice versa.
+ */
+ #define uid_t xuid_t
+ #define gid_t xgid_t
+ #include <linux/uidgid.h>
+ #undef uid_t
+ #undef gid_t
+
+ #define KUID_TO_SUID(x) (__kuid_val(x))
+ #define KGID_TO_SGID(x) (__kgid_val(x))
+ #define SUID_TO_KUID(x) (KUIDT_INIT(x))
+ #define SGID_TO_KGID(x) (KGIDT_INIT(x))
+ #define KGIDP_TO_SGIDP(x) (&(x)->val)
+
+#else /* HAVE_KUIDGID_T */
+
+ #define KUID_TO_SUID(x) (x)
+ #define KGID_TO_SGID(x) (x)
+ #define SUID_TO_KUID(x) (x)
+ #define SGID_TO_KGID(x) (x)
+ #define KGIDP_TO_SGIDP(x) (x)
+
+#endif /* HAVE_KUIDGID_T */
+
+extern void crhold(cred_t *cr);
+extern void crfree(cred_t *cr);
+extern uid_t crgetuid(const cred_t *cr);
+extern uid_t crgetruid(const cred_t *cr);
+extern uid_t crgetsuid(const cred_t *cr);
+extern uid_t crgetfsuid(const cred_t *cr);
+extern gid_t crgetgid(const cred_t *cr);
+extern gid_t crgetrgid(const cred_t *cr);
+extern gid_t crgetsgid(const cred_t *cr);
+extern gid_t crgetfsgid(const cred_t *cr);
+extern int crgetngroups(const cred_t *cr);
+extern gid_t * crgetgroups(const cred_t *cr);
+extern int groupmember(gid_t gid, const cred_t *cr);
#endif /* _SPL_CRED_H */
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