/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Lustre curproc API implementation for Linux kernel
+ * GPL HEADER START
*
- * Copyright (C) 2004 Cluster File Systems, Inc.
- * Author: Nikita Danilov <nikita@clusterfs.com>
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program 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 version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*
- * This file is part of Lustre, http://www.lustre.org.
+ * libcfs/libcfs/linux/linux-curproc.c
*
- * Lustre is free software; you can redistribute it and/or modify it under the
- * terms of version 2 of the GNU General Public License as published by the
- * Free Software Foundation. Lustre 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 Lustre; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Lustre curproc API implementation for Linux kernel
+ *
+ * Author: Nikita Danilov <nikita@clusterfs.com>
*/
#include <linux/sched.h>
+#include <linux/fs_struct.h>
#define DEBUG_SUBSYSTEM S_LNET
#include <libcfs/libcfs.h>
-#include <libcfs/kp30.h>
/*
* Implementation of cfs_curproc API (see portals/include/libcfs/curproc.h)
uid_t cfs_curproc_uid(void)
{
- return current->uid;
+ return current_uid();
}
gid_t cfs_curproc_gid(void)
{
- return current->gid;
+ return current_gid();
}
uid_t cfs_curproc_fsuid(void)
{
- return current->fsuid;
+ return current_fsuid();
+}
+
+uid_t cfs_curproc_euid(void)
+{
+ return current_euid();
+}
+
+uid_t cfs_curproc_egid(void)
+{
+ return current_egid();
}
gid_t cfs_curproc_fsgid(void)
{
- return current->fsgid;
+ return current_fsgid();
}
pid_t cfs_curproc_pid(void)
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,4)
task_lock(current);
- nr = current->group_info->ngroups;
+ nr = current_cred()->group_info->ngroups;
task_unlock(current);
#else
nr = current->ngroups;
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,4)
task_lock(current);
- size = min_t(int, size, current->group_info->ngroups);
- memcpy(array, current->group_info->blocks[0], size * sizeof(__u32));
+ size = min_t(int, size, current_cred()->group_info->ngroups);
+ memcpy(array, current_cred()->group_info->blocks[0], size * sizeof(__u32));
task_unlock(current);
#else
LASSERT(size <= NGROUPS);
return current->comm;
}
-cfs_kernel_cap_t cfs_curproc_cap_get(void)
+/* Currently all the CFS_CAP_* defines match CAP_* ones. */
+#define cfs_cap_pack(cap) (cap)
+#define cfs_cap_unpack(cap) (cap)
+
+void cfs_cap_raise(cfs_cap_t cap)
+{
+ struct cred *cred;
+ if ((cred = prepare_creds())) {
+ cap_raise(cred->cap_effective, cfs_cap_unpack(cap));
+ commit_creds(cred);
+ }
+}
+
+void cfs_cap_lower(cfs_cap_t cap)
+{
+ struct cred *cred;
+ if ((cred = prepare_creds())) {
+ cap_lower(cred->cap_effective, cfs_cap_unpack(cap));
+ commit_creds(cred);
+ }
+}
+
+int cfs_cap_raised(cfs_cap_t cap)
+{
+ return cap_raised(current_cap(), cfs_cap_unpack(cap));
+}
+
+void cfs_kernel_cap_pack(cfs_kernel_cap_t kcap, cfs_cap_t *cap)
+{
+#if defined (_LINUX_CAPABILITY_VERSION) && _LINUX_CAPABILITY_VERSION == 0x19980330
+ *cap = cfs_cap_pack(kcap);
+#elif defined (_LINUX_CAPABILITY_VERSION) && _LINUX_CAPABILITY_VERSION == 0x20071026
+ *cap = cfs_cap_pack(kcap[0]);
+#elif defined(_KERNEL_CAPABILITY_VERSION) && _KERNEL_CAPABILITY_VERSION == 0x20080522
+ /* XXX lost high byte */
+ *cap = cfs_cap_pack(kcap.cap[0]);
+#else
+ #error "need correct _KERNEL_CAPABILITY_VERSION "
+#endif
+}
+
+void cfs_kernel_cap_unpack(cfs_kernel_cap_t *kcap, cfs_cap_t cap)
+{
+#if defined (_LINUX_CAPABILITY_VERSION) && _LINUX_CAPABILITY_VERSION == 0x19980330
+ *kcap = cfs_cap_unpack(cap);
+#elif defined (_LINUX_CAPABILITY_VERSION) && _LINUX_CAPABILITY_VERSION == 0x20071026
+ (*kcap)[0] = cfs_cap_unpack(cap);
+#elif defined(_KERNEL_CAPABILITY_VERSION) && _KERNEL_CAPABILITY_VERSION == 0x20080522
+ kcap->cap[0] = cfs_cap_unpack(cap);
+#else
+ #error "need correct _KERNEL_CAPABILITY_VERSION "
+#endif
+}
+
+cfs_cap_t cfs_curproc_cap_pack(void)
+{
+ cfs_cap_t cap;
+ cfs_kernel_cap_pack(current_cap(), &cap);
+ return cap;
+}
+
+void cfs_curproc_cap_unpack(cfs_cap_t cap)
{
- return current->cap_effective;
+ struct cred *cred;
+ if ((cred = prepare_creds())) {
+ cfs_kernel_cap_unpack(&cred->cap_effective, cap);
+ commit_creds(cred);
+ }
}
-void cfs_curproc_cap_set(cfs_kernel_cap_t cap)
+int cfs_capable(cfs_cap_t cap)
{
- current->cap_effective = cap;
+ return capable(cfs_cap_unpack(cap));
}
EXPORT_SYMBOL(cfs_curproc_uid);
EXPORT_SYMBOL(cfs_curproc_pid);
+EXPORT_SYMBOL(cfs_curproc_euid);
EXPORT_SYMBOL(cfs_curproc_gid);
+EXPORT_SYMBOL(cfs_curproc_egid);
EXPORT_SYMBOL(cfs_curproc_fsuid);
EXPORT_SYMBOL(cfs_curproc_fsgid);
EXPORT_SYMBOL(cfs_curproc_umask);
EXPORT_SYMBOL(cfs_curproc_groups_nr);
EXPORT_SYMBOL(cfs_curproc_groups_dump);
EXPORT_SYMBOL(cfs_curproc_is_in_groups);
-EXPORT_SYMBOL(cfs_curproc_cap_get);
-EXPORT_SYMBOL(cfs_curproc_cap_set);
+EXPORT_SYMBOL(cfs_cap_raise);
+EXPORT_SYMBOL(cfs_cap_lower);
+EXPORT_SYMBOL(cfs_cap_raised);
+EXPORT_SYMBOL(cfs_curproc_cap_pack);
+EXPORT_SYMBOL(cfs_curproc_cap_unpack);
+EXPORT_SYMBOL(cfs_capable);
/*
* Local variables:
git://git.whamcloud.com / fs / lustre-release.git / blobdiff