+++ /dev/null
-/*
- * GPL HEADER START
- *
- * 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 (c) 2008, 2010, Oracle and/or its affiliates. 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.
- *
- * libcfs/libcfs/linux/linux-curproc.c
- *
- * Lustre curproc API implementation for Linux kernel
- *
- * Author: Nikita Danilov <nikita@clusterfs.com>
- */
-
-#include <linux/sched.h>
-#include <linux/fs_struct.h>
-
-#include <linux/compat.h>
-#include <linux/thread_info.h>
-
-#define DEBUG_SUBSYSTEM S_LNET
-
-#include <libcfs/libcfs.h>
-
-/*
- * Implementation of cfs_curproc API (see portals/include/libcfs/curproc.h)
- * for Linux kernel.
- */
-
-uid_t cfs_curproc_uid(void)
-{
- return current_uid();
-}
-
-gid_t cfs_curproc_gid(void)
-{
- return current_gid();
-}
-
-uid_t cfs_curproc_fsuid(void)
-{
- 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();
-}
-
-pid_t cfs_curproc_pid(void)
-{
- return current->pid;
-}
-
-int cfs_curproc_groups_nr(void)
-{
- int nr;
-
- task_lock(current);
- nr = current_cred()->group_info->ngroups;
- task_unlock(current);
- return nr;
-}
-
-void cfs_curproc_groups_dump(gid_t *array, int size)
-{
- task_lock(current);
- size = min_t(int, size, current_cred()->group_info->ngroups);
- memcpy(array, current_cred()->group_info->blocks[0], size * sizeof(__u32));
- task_unlock(current);
-}
-
-
-int cfs_curproc_is_in_groups(gid_t gid)
-{
- return in_group_p(gid);
-}
-
-mode_t cfs_curproc_umask(void)
-{
- return current->fs->umask;
-}
-
-char *cfs_curproc_comm(void)
-{
- return current->comm;
-}
-
-/* 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)
-{
- struct cred *cred;
- if ((cred = prepare_creds())) {
- cfs_kernel_cap_unpack(&cred->cap_effective, cap);
- commit_creds(cred);
- }
-}
-
-int cfs_capable(cfs_cap_t cap)
-{
- return capable(cfs_cap_unpack(cap));
-}
-
-/* Check if task is running in 32-bit API mode, for the purpose of
- * userspace binary interfaces. On 32-bit Linux this is (unfortunately)
- * always true, even if the application is using LARGEFILE64 and 64-bit
- * APIs, because Linux provides no way for the filesystem to know if it
- * is called via 32-bit or 64-bit APIs. Other clients may vary. On
- * 64-bit systems, this will only be true if the binary is calling a
- * 32-bit system call. */
-int cfs_curproc_is_32bit(void)
-{
-#ifdef HAVE_IS_COMPAT_TASK
- return is_compat_task();
-#else
- return (BITS_PER_LONG == 32);
-#endif
-}
-
-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_comm);
-EXPORT_SYMBOL(cfs_curproc_groups_nr);
-EXPORT_SYMBOL(cfs_curproc_groups_dump);
-EXPORT_SYMBOL(cfs_curproc_is_in_groups);
-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);
-EXPORT_SYMBOL(cfs_curproc_is_32bit);
-
-/*
- * Local variables:
- * c-indentation-style: "K&R"
- * c-basic-offset: 8
- * tab-width: 8
- * fill-column: 80
- * scroll-step: 1
- * End:
- */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff