UBUNTU: SAUCE: (noup) Update spl to 0.6.5.9-1, zfs to 0.6.5.9-2

[mirror_ubuntu-bionic-kernel.git] / spl / include / sys / cred.h

diff --git a/spl/include/sys/cred.h b/spl/include/sys/cred.h
new file mode 100644 (file)
index 0000000..480e268
--- /dev/null
+++ b/spl/include/sys/cred.h
@@ -0,0 +1,86 @@
+/*****************************************************************************\
+ *  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
+
+#include <linux/module.h>
+#include <sys/types.h>
+#include <sys/vfs.h>
+
+typedef struct cred cred_t;
+
+#define        kcred           ((cred_t *)(init_task.cred))
+#define        CRED()          ((cred_t *)current_cred())
+
+/* Linux 4.9 API change, GROUP_AT was removed */
+#ifndef GROUP_AT
+#define        GROUP_AT(gi, i) ((gi)->gid[i])
+#endif
+
+#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 */